WO2016038836A1 - 硬化性シリコーン組成物、その硬化物、および光半導体装置 - Google Patents
硬化性シリコーン組成物、その硬化物、および光半導体装置 Download PDFInfo
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- WO2016038836A1 WO2016038836A1 PCT/JP2015/004355 JP2015004355W WO2016038836A1 WO 2016038836 A1 WO2016038836 A1 WO 2016038836A1 JP 2015004355 W JP2015004355 W JP 2015004355W WO 2016038836 A1 WO2016038836 A1 WO 2016038836A1
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- curable silicone
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- 229920001296 polysiloxane Polymers 0.000 title claims abstract description 223
- 239000000203 mixture Substances 0.000 title claims abstract description 208
- 230000003287 optical effect Effects 0.000 title claims description 40
- 239000004065 semiconductor Substances 0.000 title claims description 40
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 54
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000000843 powder Substances 0.000 claims abstract description 49
- 239000002245 particle Substances 0.000 claims abstract description 30
- 125000005375 organosiloxane group Chemical group 0.000 claims abstract description 12
- -1 polysiloxane Polymers 0.000 claims description 236
- 125000003342 alkenyl group Chemical group 0.000 claims description 42
- 125000000217 alkyl group Chemical group 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 40
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 36
- 125000004432 carbon atom Chemical group C* 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 25
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 16
- 125000002252 acyl group Chemical group 0.000 claims description 14
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 11
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- 125000001931 aliphatic group Chemical group 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 8
- 239000000758 substrate Substances 0.000 abstract description 40
- 150000001282 organosilanes Chemical class 0.000 abstract description 10
- 230000009974 thixotropic effect Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 86
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 71
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 55
- 239000004205 dimethyl polysiloxane Substances 0.000 description 50
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 50
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 50
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 28
- 229910052697 platinum Inorganic materials 0.000 description 26
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 23
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- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 20
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 19
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 19
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- 229910052710 silicon Inorganic materials 0.000 description 16
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 15
- BITPLIXHRASDQB-UHFFFAOYSA-N ethenyl-[ethenyl(dimethyl)silyl]oxy-dimethylsilane Chemical compound C=C[Si](C)(C)O[Si](C)(C)C=C BITPLIXHRASDQB-UHFFFAOYSA-N 0.000 description 13
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- 239000000126 substance Substances 0.000 description 12
- KWEKXPWNFQBJAY-UHFFFAOYSA-N (dimethyl-$l^{3}-silanyl)oxy-dimethylsilicon Chemical compound C[Si](C)O[Si](C)C KWEKXPWNFQBJAY-UHFFFAOYSA-N 0.000 description 11
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
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- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 8
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- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 description 6
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- 125000003118 aryl group Chemical group 0.000 description 5
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 4
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- 238000009835 boiling Methods 0.000 description 3
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 3
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- 229910052801 chlorine Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- KQAHMVLQCSALSX-UHFFFAOYSA-N decyl(trimethoxy)silane Chemical compound CCCCCCCCCC[Si](OC)(OC)OC KQAHMVLQCSALSX-UHFFFAOYSA-N 0.000 description 3
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- 125000005843 halogen group Chemical group 0.000 description 3
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
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- URDOJQUSEUXVRP-UHFFFAOYSA-N 3-triethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CCO[Si](OCC)(OCC)CCCOC(=O)C(C)=C URDOJQUSEUXVRP-UHFFFAOYSA-N 0.000 description 2
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- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 2
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- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000002683 reaction inhibitor Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- UMFJXASDGBJDEB-UHFFFAOYSA-N triethoxy(prop-2-enyl)silane Chemical compound CCO[Si](CC=C)(OCC)OCC UMFJXASDGBJDEB-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- LFRDHGNFBLIJIY-UHFFFAOYSA-N trimethoxy(prop-2-enyl)silane Chemical compound CO[Si](OC)(OC)CC=C LFRDHGNFBLIJIY-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
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- H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
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- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/48237—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a die pad of the item
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- H01L2924/181—Encapsulation
Definitions
- the present invention relates to a curable silicone composition, a cured product thereof, and an optical semiconductor device.
- the optical semiconductor device is provided with a light reflecting material in order to efficiently reflect light emitted from the optical semiconductor element.
- a light reflecting material examples include a hydrosilylation reactive silicone having a structure in which one of a vinyl group and an allyl group and a hydrogen atom are directly bonded to a silicon atom.
- a curable silicone composition comprising a resin, a platinum-based catalyst, and a white pigment (see Patent Document 1), a vinyl group-containing organopolysiloxane having a weight average molecular weight (Mw) of 30,000 or more, and a silicon atom bond in one molecule
- Curable silicone composition comprising organohydrogenpolysiloxane having at least two hydrogen atoms, white pigment, inorganic filler other than white pigment, platinum metal catalyst, and reaction control agent (see Patent Document 2), silicon atom bond Branched chain in which 30 to 80 mol% of all organic groups are phenyl groups and 5 to 20 mol% are alkenyl groups
- Organopolysiloxane in the form of a molecule, organopolysiloxane having 10 or less silicon atoms, in which 30 to 60 mol% of all silicon-bonded organic groups are alkenyl groups, and having at least two silicon-bonded hydrogen atoms in one molecule
- a curable silicone composition comprising an
- the present invention has thixotropy, good handling workability, cured, low thermal expansion coefficient, high concealment ratio, high mechanical strength, and good adhesion to various substrates. It is an object of the present invention to provide a curable silicone composition that forms a cured product, a cured product that has a low coefficient of thermal expansion, a high concealment rate, a high mechanical strength, and an optical semiconductor device that is excellent in reliability.
- the curable silicone composition of the present invention contains a titanium oxide powder having an average particle size of 0.05 to 10 ⁇ m and an inorganic powder other than titanium oxide having an average particle size of 0.1 to 20 ⁇ m, and the content of the titanium oxide powder is A thermosetting silicone composition having a content of 50 to 90% by mass in the present composition and a content of the inorganic powder of 5 to 40% by mass in the present composition, wherein the titanium oxide powder and the inorganic powder But the general formula: R 1 (4-a) Si (OR 2 ) a Wherein R 1 is an unsubstituted or halogen-substituted monovalent hydrocarbon group having 6 to 20 carbon atoms, R 2 is an alkyl group, an alkoxyalkyl group, an alkenyl group, or an acyl group, and a is an integer of 1 to 3.
- R 3 is an unsubstituted or halogen-substituted monovalent hydrocarbon group
- R 4 is a monovalent hydrocarbon group having no same or different aliphatic unsaturated bond
- R 5 is an oxygen atom or a divalent hydrocarbon group.
- a hydrogen group R 6 is an alkyl group, an alkoxyalkyl group, an alkenyl group, or an acyl group
- b is an integer of 1 to 3
- p is an integer of 1 or more.
- the cured product of the present invention is characterized by curing the above curable silicone composition.
- the optical semiconductor device of the present invention is characterized by having a light reflecting material made of a cured product of the curable silicone composition.
- the curable silicone composition of the present invention has thixotropy, good handling workability, is cured, has a low coefficient of thermal expansion, a high concealment rate, a high mechanical strength, and various substrates. It has the characteristic of forming a cured product with good adhesion to the substrate. Further, the cured product of the present invention is characterized by a low coefficient of thermal expansion, a high concealment rate, and a high mechanical strength. Furthermore, the optical semiconductor device of the present invention is characterized by excellent reliability.
- the curable silicone composition of the present invention contains a titanium oxide powder having an average particle size of 0.05 to 10 ⁇ m and an inorganic powder other than titanium oxide having an average particle size of 0.1 to 20 ⁇ m, and the content of the titanium oxide powder is It is 50 to 90% by mass in the present composition, and the content of the inorganic powder is 5 to 40% by mass in the present composition.
- This titanium oxide powder is a white pigment for imparting light reflection performance to the cured product of the present composition.
- examples of such titanium oxide powder include anatase-type titanium oxide powder and rutile-type titanium oxide powder, and rutile-type titanium oxide powder is preferable because the light reflection performance and hiding power of the cured product are high.
- the average particle diameter of the titanium oxide is in the range of 0.05 to 10 ⁇ m, preferably in the range of 0.01 to 5 ⁇ m, or in the range of 0.01 to 3 ⁇ m.
- This titanium oxide may have a surface that has been surface-treated with a silane coupling agent, silica, alumina, zirconia or the like in advance.
- the content of the titanium oxide powder is in the range of 50 to 90% by mass in the present composition, preferably in the range of 50 to 85% by mass, in the range of 50 to 80% by mass, and 55 to 90% by mass. %, 55-85% by weight, or 55-80% by weight.
- the content of the titanium oxide powder is not less than the lower limit of the above range, the resulting curable silicone composition has good thixotropy, and the concealability and strength of the obtained cured product.
- operativity of the curable silicone composition obtained as it is below the upper limit of the said range is favorable.
- the content of titanium oxide powder is 10 to 30% by mass with respect to the curable silicone composition.
- the content of 50% by mass or more not only improves the concealability of the resulting cured product. Also, the mechanical strength can be improved. Moreover, in this composition, even if it does not mix
- the inorganic powder other than titanium oxide is a component for reducing the linear expansion coefficient of the cured product and improving the dimensional stability when used in combination with the above titanium oxide powder.
- examples of such inorganic powders include spherical silica, non-spherical silica, and glass fiber, and spherical silica is preferred because the viscosity increase of the resulting curable silicone composition is small.
- examples of the spherical silica include dry silica, wet silica, fused silica, and deflagration silica, but fused silica is preferred because the filling property of the present composition is good.
- the average particle size of the inorganic powder is in the range of 0.1 to 20 ⁇ m, and preferably 0.1 to 15 ⁇ m because of the ease of passing through the mesh and the ease of forming a thin film when using a coating process by screen printing.
- 0.1 to 10 ⁇ m within a range of 0.1 to 10 ⁇ m, within a range of 0.2 to 20 ⁇ m, within a range of 0.2 to 15 ⁇ m, or within a range of 0.2 to 10 ⁇ m.
- the content of the inorganic powder is in the range of 5 to 40% by mass in the present composition, preferably in the range of 5 to 35% by mass, or in the range of 5 to 30% by mass. This is because when the content of the inorganic powder is not less than the lower limit of the above range, the resulting cured product has a low coefficient of linear expansion and good dimensional stability, while it is not more than the upper limit of the above range. This is because the viscosity of the resulting curable silicone composition does not become too high and the handling workability is good.
- the titanium oxide powder and the inorganic powder have the general formula: R 1 (4-a) Si (OR 2 ) a
- R 1 is an unsubstituted or halogen-substituted monovalent hydrocarbon group having 6 to 20 carbon atoms
- R 2 is an alkyl group, an alkoxyalkyl group, an alkenyl group, or an acyl group
- a is an integer of 1 to 3.
- R 3 is an unsubstituted or halogen-substituted monovalent hydrocarbon group
- R 4 is a monovalent hydrocarbon group having no same or different aliphatic unsaturated bond
- R 5 is an oxygen atom or a divalent hydrocarbon group.
- a hydrogen group R 6 is an alkyl group, an alkoxyalkyl group, an alkenyl group, or an acyl group
- b is an integer of 1 to 3
- p is an integer of 1 or more.
- R 1 is an unsubstituted or halogen-substituted monovalent hydrocarbon group having 6 to 20 carbon atoms. This is because when R 1 has less than 6 carbon atoms, the effect of lowering the viscosity of the resulting curable silicone composition is poor. On the other hand, when the number of carbon atoms exceeds 20, the compatibility with the organopolysiloxane component decreases. Because it does.
- R 1 monovalent hydrocarbon group includes hexyl group, octyl group, dodecyl group, tetradecyl group, hexadecyl group, octadecyl group and other alkyl groups; benzyl group, phenylethyl group and other aralkyl groups; these alkyl groups and aralkyl groups. Examples thereof include groups in which part or all of the hydrogen atoms in the group are substituted with halogen atoms such as fluorine and chlorine, and alkyl groups having 6 to 20 carbon atoms are preferred.
- R 2 is an alkyl group, an alkoxyalkyl group, an alkenyl group, or an acyl group.
- an alkyl group having 1 to 6 carbon atoms such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group; an alkoxyalkyl group such as a methoxymethyl group, an ethoxymethyl group, and a methoxyethyl group;
- Illustrative examples include alkenyl groups such as isopropylene group and isobutenyl group; acyl groups such as acetoxy group, preferably an alkyl group, and particularly a methyl group and an ethyl group.
- a is an integer of 1 to 3, preferably 3.
- organosilanes include the following compounds. C 6 H 13 Si (OCH 3 ) 3 C 8 H 17 Si (OC 2 H 5 ) 3 C 10 H 21 Si (OCH 3 ) 3 C 12 H 25 Si (OCH 3 ) 3 C 14 H 29 Si (OC 2 H 5 ) 3 C 6 H 5 —CH 2 CH 2 Si (OCH 3 ) 3
- the amount of the organosilane blended is in the range of 0.1 to 10 parts by weight, preferably in the range of 0.1 to 5 parts by weight, and 0.5 to 5 parts by weight with respect to 100 parts by weight of the present composition. In the range of 0.5 part by weight or in the range of 0.5 to 10 parts by weight. This is because the surface of titanium oxide and inorganic powder can be sufficiently treated when the compounding amount of organosilane is at least the lower limit of the above range, and on the other hand, when the amount is less than the upper limit of the above range, This is because the mechanical strength and adhesive strength can be improved.
- R 3 is an unsubstituted or halogen-substituted monovalent hydrocarbon group, for example, a linear alkyl group, a branched alkyl group, a cyclic alkyl group, an alkenyl group, an aryl Group, aralkyl group and halogenated alkyl group.
- the linear alkyl group include a methyl group, an ethyl group, a propyl group, a hexyl group, and an octyl group.
- Examples of the branched alkyl group include isopropyl group, isobutyl group, tert-butyl group, and 2-ethylhexyl group.
- Examples of the cyclic alkyl group include a cyclopentyl group and a cyclohexyl group.
- Examples of the alkenyl group include a vinyl group and an allyl group.
- Examples of the aryl group include a phenyl group and a tolyl group.
- Examples of the aralkyl group include 2-phenylethyl group and 2-methyl-2-phenylethyl group.
- halogenated alkyl group examples include a 3,3,3-trifluoropropyl group, a 2- (nonafluorobutyl) ethyl group, and a 2- (heptadecafluorooctyl) ethyl group.
- R 3 is preferably a methyl group or a vinyl group.
- R 4 is a monovalent hydrocarbon group having no same or different aliphatic unsaturated bond, for example, a linear alkyl group, a branched alkyl group, a cyclic alkyl group, an aryl group, Examples include aralkyl groups and halogenated alkyl groups.
- Examples of the linear alkyl group include a methyl group, an ethyl group, a propyl group, a hexyl group, and an octyl group.
- Examples of the branched alkyl group include isopropyl group, isobutyl group, tert-butyl group, and 2-ethylhexyl group.
- Examples of the cyclic alkyl group include a cyclopentyl group and a cyclohexyl group.
- Examples of the aryl group include a phenyl group and a tolyl group.
- Examples of the aralkyl group include 2-phenylethyl group and 2-methyl-2-phenylethyl group.
- Examples of the halogenated alkyl group include a 3,3,3-trifluoropropyl group, a 2- (nonafluorobutyl) ethyl group, and a 2- (heptadecafluorooctyl) ethyl group.
- R 4 is preferably a methyl group or a phenyl group.
- R 5 is an oxygen atom or a divalent hydrocarbon group.
- the divalent hydrocarbon group for R 5 include alkylene groups such as ethylene group, propylene group, and butylene group; and alkylenearylene alkylene groups such as ethylenephenyleneethylene group and ethylenephenylenepropylene group.
- R 6 represents an alkyl group, an alkoxyalkyl group, an alkenyl group, or an acyl group.
- an alkyl group having 1 to 6 carbon atoms such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group; an alkoxyalkyl group such as a methoxymethyl group, an ethoxymethyl group, and a methoxyethyl group;
- Illustrative examples include alkenyl groups such as isopropylene group and isobutenyl group; acyl groups such as acetoxy group, preferably an alkyl group, and particularly a methyl group and an ethyl group.
- b is an integer of 1 to 3, preferably 3.
- p is an integer of 1 or more, preferably an integer in the range of 1 to 200, an integer in the range of 5 to 200, or
- Examples of such an organosiloxane include the following compounds.
- Me, Ph, and Vi represent a methyl group, a phenyl group, and a vinyl group, respectively.
- the amount of the organosiloxane blended is in the range of 0.1 to 10 parts by weight, preferably in the range of 0.1 to 5 parts by weight, and 0.5 to 5 parts by weight with respect to 100 parts by weight of the composition. In the range of 0.5 part by weight or in the range of 0.5 to 10 parts by weight. This is because the surface of titanium oxide and inorganic powder can be sufficiently treated when the amount of the organosiloxane is not less than the lower limit of the above range, and on the other hand, if the amount is less than the upper limit of the above range, This is because a decrease in hardness can be suppressed, an increase in linear expansion coefficient can be suppressed, and mechanical strength and adhesive strength can be improved.
- the above organosilane or the above organosiloxane may be used alone or in combination. By using these together, it is possible to efficiently perform the surface treatment of the titanium oxide powder and the inorganic powder, and simultaneously impart high mechanical strength, low linear expansion coefficient, and high adhesive ability to the resulting cured product. it can.
- the mass ratio of the organosilane to the organosiloxane is preferably in the range of 3: 7 to 7: 3, particularly 1: 1.
- This composition is thermosetting, and its curing mechanism is not particularly limited. Examples thereof include hydrosilylation reactions, radical reactions with organic peroxides, and condensation reactions, and hydrosilylation reactions are preferred.
- Examples of the hydrosilylation reaction-curable silicone composition include: (A) an organopolysiloxane having at least two alkenyl groups in one molecule; (B) Organopolysiloxane having at least two silicon-bonded hydrogen atoms in one molecule ⁇ the amount of silicon-bonded hydrogen atoms in this component is 0.1 to 0.1 mol per 1 mole of alkenyl groups in component (A) Amount to be 10 moles ⁇ , (C) Titanium oxide powder having an average particle size of 0.05 to 10 ⁇ m (in the present composition, an amount of 50 to 90% by mass), (D) Inorganic powder other than titanium oxide having an average particle size of 0.1 to 20 ⁇ m (amount of 5 to 40% by mass in the present composition), (E) (E-1) General formula: R 1 (4-a)
- a hydrogen group R 6 is an alkyl group, an alkoxyalkyl group, an alkenyl group, or an acyl group, b is an integer of 1 to 3, and p is an integer of 1 or more.
- Hydrosilylation catalyst (amount for promoting the hydrosilylation reaction of the composition) represented by the formula (0.1 to 10 parts by mass with respect to 100 parts by mass of the composition)
- a curable silicone composition comprising at least
- the organopolysiloxane of the component has at least two alkenyl groups in one molecule.
- alkenyl group include alkenyl groups having 2 to 10 carbon atoms such as vinyl group, allyl group, butenyl group, pentenyl group, and hexenyl group.
- the group bonded to the silicon atom other than the alkenyl group in the component (A) has 1 to 6 carbon atoms such as methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, cyclopentyl group, cyclohexyl group and the like.
- alkyl group having 6 to 12 carbon atoms such as a phenyl group, a tolyl group or a xylyl group; an aralkyl group having 7 to 12 carbon atoms such as a benzyl group or a phenethyl group; a part of hydrogen atoms of these groups Or the group which substituted all with halogen atoms, such as a fluorine atom and a chlorine atom, is illustrated.
- Component organopolysiloxane has at least two silicon-bonded hydrogen atoms in one molecule.
- the group bonded to the silicon atom other than the hydrogen atom in the component (B) has 1 to 6 carbon atoms such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a cyclopentyl group, and a cyclohexyl group.
- alkyl group having 6 to 12 carbon atoms such as a phenyl group, a tolyl group or a xylyl group; an aralkyl group having 7 to 12 carbon atoms such as a benzyl group or a phenethyl group; a part of hydrogen atoms of these groups Or the group which substituted all with halogen atoms, such as a fluorine atom and a chlorine atom, is illustrated.
- the component (A) is represented by the formula (A-1): -(R 7 R 8 SiO 2/2 ) m-
- R 7 is an alkyl group having 1 to 6 carbon atoms or a phenyl group.
- alkyl group for R 7 include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a cyclopentyl group, and a cyclohexyl group.
- R 8 is an alkenyl group having 2 to 10 carbon atoms, and examples thereof include a vinyl group, an allyl group, a butenyl group, a pentenyl group, and a hexenyl group.
- m is an integer in the range of 5 to 50, preferably an integer in the range of 5 to 30. This is because when m is not less than the lower limit of the above range, the thermal expansion coefficient of the obtained cured product is remarkably reduced, and when it is not more than the upper limit of the above range, the mechanical strength of the obtained cured product is improved. It is.
- the component (A-1) is a linear organopolysiloxane composed of only the above-mentioned linear siloxane block and having both molecular chain ends blocked.
- Examples of the group at the end of the molecular chain include hydroxyl groups; alkoxy groups such as methoxy group, ethoxy group, and propoxy group; and organosiloxy groups such as trimethylsiloxy group, dimethylvinylsiloxy group, dimethylphenylsiloxy group, and methylphenylvinylsiloxy group. Is done.
- the component (A-1) may be a block copolymer in which the linear siloxane block (X) and another siloxane block (Y) are linked.
- a block copolymer As such a block copolymer, an XY copolymer in which X and Y are connected one by one, an XYX copolymer in which X is connected to both ends of Y, and X and Y are alternately connected z times repeatedly ( XY) z copolymers are exemplified.
- the siloxane block (Y) has a general formula: -(R 7 c SiO (4-c) / 2 )- (Wherein R 7 is the same as above, and c is a number from 0.5 to 2). Or a polysiloxane composed of a repetition thereof.
- the group at the end of the molecular chain of this block copolymer is exemplified by a hydroxyl group, an alkoxy group similar to the above, or an organosiloxy group similar to the above.
- the organopolysiloxane is generally prepared by polymerizing a cyclic diorganosiloxane by a re-equilibration reaction in the presence of a base catalyst or an acid catalyst. In such a method, the linear siloxane block is retained. It is difficult to prepare a block copolymer. Therefore, as a method for preparing the block copolymer as described above, the polysiloxane having the linear siloxane block (X) and the siloxane or polysiloxane having another siloxane block (Y) are subjected to a condensation reaction. A method is illustrated.
- the content of the component (A-1) is such that the content of the linear siloxane block is 20 to 60% by mass of the total of the organopolysiloxanes in the present composition, preferably 30 to 50% by mass. This is because when the content of the linear siloxane block is equal to or higher than the lower limit of the above range, the thermal expansion coefficient of the resulting cured product is remarkably lowered, whereas when the content is equal to or lower than the upper limit of the above range, the obtained curing is obtained. This is because the flexibility and mechanical strength of the object are improved.
- (A) in addition to the component (A-1), (A-2) a linear or branched organopolysiloxane having at least two alkenyl groups in one molecule May be used in combination.
- alkenyl group in the component (A-2) include alkenyl groups having 2 to 6 carbon atoms such as vinyl group, allyl group, isopropenyl group, butenyl group, hexenyl group, and cyclohexenyl group.
- the group bonded to the silicon atom other than the alkenyl group in the component (A-2) includes an alkyl group having 1 to 6 carbon atoms such as a methyl group, an ethyl group, and a propyl group; a phenyl group, a tolyl group, and a xylyl group.
- Aryl groups having 6 to 12 carbon atoms such as benzyl groups, phenethyl groups and other aralkyl groups having 7 to 12 carbon atoms; halogenated alkyl groups such as 3-chloropropyl groups and 3,3,3-trifluoropropyl groups; Illustrated.
- molecular chain both ends dimethylvinylsiloxy group-capped dimethylpolysiloxane
- Examples include dimethylsiloxane / methylphenylsiloxane copolymers blocked with dimethylvinylsiloxy groups blocked at both molecular chains, and dimethylsiloxane / methylvinylsiloxane random copolymers blocked with trimethylsiloxy groups blocked at both molecular chains.
- the branched chain organopolysiloxane (A-2) includes a siloxane unit represented by the formula: SiO 4/2 and a siloxane unit represented by the general formula: R 7 2 R 8 SiO 1/2. And those composed of siloxane units represented by the general formula: R 7 3 SiO 1/2 .
- R 7 is an alkyl group having 1 to 6 carbon atoms or a phenyl group, and examples thereof are the same groups as described above.
- R 8 is an alkenyl group having 2 to 10 carbon atoms, and examples thereof are the same groups as described above.
- the total of the siloxane units represented by 2 is preferably in the range of 0.5 to 1.5.
- the organopolysiloxane may have a very small amount of hydroxyl groups, alkoxy groups, etc. bonded to silicon atoms in the molecule.
- the content of the component (A-2) is not particularly limited, but the alkenyl group in this component is at most 10 mol% with respect to the total of the alkenyl group in component (A-1) and the alkenyl group in this component. It is preferable that the amount is as follows. This is because the thermal expansion coefficient of the resulting cured product is significantly reduced when the content of this component is not more than the upper limit of the above range.
- R 9 is an alkyl group having 1 to 6 carbon atoms or a phenyl group, and examples thereof include the same groups as R 7 .
- n is an integer in the range of 10 to 100, preferably an integer in the range of 20 to 80. This is because when n is not less than the lower limit of the above range, the coefficient of thermal expansion of the obtained cured product is remarkably reduced, while when it is not more than the upper limit of the above range, the mechanical strength of the obtained cured product is improved. It is.
- an organopolysiloxane composed only of the above-mentioned linear siloxane block and blocked at both ends of the molecular chain is exemplified.
- the group at the end of this molecular chain is a hydroxyl group; an alkoxy group such as a methoxy group, an ethoxy group, or a propoxy group; an organosiloxy group such as a trimethylsiloxy group, a dimethylhydrogensiloxy group, a dimethylphenylsiloxy group, or a methylphenylhydrogensiloxy group Is exemplified.
- the component (B) may be a block copolymer in which the linear siloxane block (X ′) and another siloxane block (Y ′) are linked.
- a block copolymer an X′Y copolymer in which X ′ and Y are linked one by one, an X′YX ′ copolymer in which X ′ is linked to both ends of Y, and X ′ and Y are alternated And (X′Y) z copolymer linked repeatedly z times.
- Examples of the siloxane block (Y) are the same as those described above.
- the group at the end of the molecular chain of this block copolymer is exemplified by a hydroxyl group, an alkoxy group similar to the above, or an organosiloxy group similar to the above.
- the content of component (B) is such that the silicon-bonded hydrogen atoms in this component are within the range of 0.1 to 10 mol per mol of alkenyl groups in component (A), preferably , An amount in the range of 0.5 to 10 mol, an amount in the range of 0.5 to 5 mol, or an amount in the range of 0.7 to 2 mol.
- the content of the component (B) is not less than the lower limit of the above range, the thermal expansion coefficient of the resulting cured product is remarkably reduced, whereas when it is not more than the upper limit of the above range, the resulting cured product is a machine. This is because the mechanical strength is improved.
- Tianium oxide powder of component (C) and inorganic powder of component (D) are as described above. Further, the organosilane and organosiloxane of the component (E) are as described above.
- the component (C) and the component (D) are mixed with part or all of the component (A), Next, a method of mixing the component (E) with this and heating as necessary, mixing the component (C) with a part of the component (A), and then mixing a part of the component (E) with this Then, the component (D) was mixed with part of the component (A) that was heated as necessary, and then part of the component (E) was mixed with this and heated as necessary.
- the method of mixing things is illustrated. Moreover, you may mix
- the component (F) is a hydrosilylation reaction catalyst for promoting the curing reaction of the composition.
- the component (F) include platinum-based catalysts, rhodium-based catalysts, and palladium-based catalysts.
- the component (F) is preferably a platinum-based catalyst because curing of the composition can be remarkably accelerated.
- the platinum catalyst include platinum fine powder, chloroplatinic acid, an alcohol solution of chloroplatinic acid, a platinum-alkenylsiloxane complex, a platinum-olefin complex, and a platinum-carbonyl complex.
- alkenylsiloxane examples include 1,3-divinyl-1,1,3,3-tetramethyldisiloxane, 1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane, Examples thereof include alkenyl siloxanes in which part of the methyl groups of these alkenyl siloxanes are substituted with ethyl groups, phenyl groups, and the like, and alkenyl siloxanes in which the vinyl groups of these alkenyl siloxanes are substituted with allyl groups, hexenyl groups, and the like.
- the content of the component (F) is not particularly limited as long as it is an amount sufficient to promote the hydrosilylation reaction of the present composition.
- the metal atom in the present component is in mass units relative to the present composition. In an amount in the range of 0.01 to 500 ppm, an amount in the range of 0.01 to 100 ppm, or an amount in the range of 0.01 to 50 ppm.
- the content of the component (F) is not less than the lower limit of the above range, the resulting composition is cured well.
- the content is not more than the upper limit of the above range, the resulting cured product is colored. It is difficult.
- the composition may contain (G) a reaction inhibitor in order to appropriately control the curing rate of the composition.
- a reaction inhibitor in order to appropriately control the curing rate of the composition.
- Examples of such component (G) include 1-ethynylcyclohexanol, 2-methyl-3-butyn-2-ol, 3,5-dimethyl-1-hexyn-3-ol, 2-phenyl-3-butyne- Alkyne alcohols such as 2-ol; Enyne compounds such as 3-methyl-3-penten-1-yne, 3,5-dimethyl-3-hexen-1-yne; 1,3,5,7-tetramethyl-1 1,3,5,7-tetravinylcyclotetrasiloxane, 1,3,5,7-tetramethyl-1,3,5,7-tetrahexenylcyclotetrasiloxane and benzotriazole.
- the content of the component (G) is not limited, but is preferably in the range of 1 to 5,000 ppm by
- the composition may contain (H) an adhesion promoter in order to further improve the adhesion to the substrate that is in contact with the curing process.
- a trialkoxysiloxy group for example, trimethoxysiloxy group, triethoxysiloxy group
- a trialkoxysilylalkyl group for example, trimethoxysilylethyl group, triethoxysilylethyl group
- a hydrosilyl group or Organosilane having an alkenyl group for example, vinyl group, allyl group
- Organosilane having a roxyalkyl group for example, 3-methacryloxypropyl group
- the viscosity at 25 ° C. at a shear rate of 1 s ⁇ 1 is preferably 1000 Pa ⁇ s or less, and the viscosity at 25 ° C. at a shear rate of 10 s ⁇ 1 is preferably 100 Pa ⁇ s or less. This is because when the viscosity is as described above, it is easy to cope with various production processes when a cured product is formed. Further, since the liquid does not easily drip at the time of use, the value of the thixo index determined by the following formula is preferably 5.0 or more.
- the present composition may be mixed with a diluent such as an organic solvent or silicone oil to adjust the viscosity.
- a diluent such as an organic solvent or silicone oil to adjust the viscosity.
- This diluent preferably has a boiling point within the range of 150 to 250 ° C. because it is easily volatilized in the curing or post-cure process of the present composition and hardly remains in the cured product.
- examples of such diluents include isoparaffinic organic solvents such as IP solvent manufactured by Idemitsu Kosan Co., Ltd., glycol ether organic solvents such as diethylene glycol monomethyl ether, or OS-20 manufactured by Toray Dow Corning Co., Ltd. Silicone solvents are exemplified.
- the content of this diluent is not particularly limited, but it is easily volatilized in the curing or post-curing process of the present composition and hardly remains in the cured product. Therefore, 0.1 to 10 parts per 100 parts by mass of the present composition. It is preferably within the range of parts by mass.
- the cured product of the present invention is obtained by curing the above curable silicone composition.
- the linear expansion coefficient of the cured product of the present invention is not particularly limited, but the average linear expansion coefficient at 25 to 200 ° C. is preferably 100 ppm / ° C. or less, and more preferably 50 ppm / ° C. or less.
- JIS K 7375: 2008 “Plastic total light transmittance and total light reflectance calculation method” when it is a 100 ⁇ m film cured product
- the total light reflectance in is preferably 90% or more.
- the shape of the cured product of the present invention is not particularly limited, but may be a plate or film formed on the support. Since the thermal expansion coefficient of the cured product of the present invention is extremely low, it is suitable as a coating film or film for coating the support.
- a method for forming such a cured product of the present invention a method of forming a film-like or plate-like cured product on a support by a molding process of the above curable silicone composition, or the above curable silicone composition The method of forming a film-like or plate-like cured product on a support by an application step is mentioned.
- imide resin bismaleimide / triazine resin
- glass fiber-containing epoxy resin paper phenol resin, bakelite, polyethylene terephthalate resin, polybutylene terephthalate resin, polyacrylonitrile resin, polycarbonate resin, fluororesin, polyimide resin, polyphenylene Sulfide resin, aramid resin, polyether ether resin, polyether imide resin, liquid crystal polymer, polyether sulfone resin, cycloolefin resin, silicone rubber, silicone resin and other resin supports; aluminum foil, copper foil, nickel foil, Or metal supports, such as aluminum nitride foil, are illustrated.
- Examples of methods for forming a cured product on the support include a molding process and a coating process.
- Examples of the molding process include press molding and compression molding using a mold.
- Examples of the coating process include screen printing and bar coater. , Roll coater, reverse coater, gravure coater, air knife coater, spray coater, curtain coater are exemplified, and in particular, when coating on a thin film, a known coating method such as a high-precision offset coater or a multi-stage roll coater is used. be able to.
- the cured product of the present invention is preferably formed on the support in the form of a plate or film by the method as described above. Since the hardened
- COB chip-on-board type
- the optical semiconductor device of the present invention has a light reflecting material made of a cured product of the above composition. Such an optical semiconductor device of the present invention will be described in detail with reference to FIGS.
- FIG. 1 shows a cross-sectional view of a chip-on-board (COB) type optical semiconductor device which is an example of the optical semiconductor device of the present invention.
- COB chip-on-board
- an optical semiconductor element 1 is mounted on a COB substrate 2 by die bonding, and the optical semiconductor element 1 and circuits 3 and 4 are electrically connected by a bonding wire 5.
- a light reflecting material 6 is formed around the optical semiconductor element 1 on the substrate 2 so as to efficiently reflect light emitted from the optical semiconductor element 1.
- FIG. 2 shows a sectional view of another chip-on-board (COB) type optical semiconductor device which is an example of the optical semiconductor device of the present invention.
- COB chip-on-board
- the optical semiconductor element 1 is electrically connected to the circuits 3 and 4 on the COB substrate 2 by bonding pads.
- a light reflecting material 6 is formed around the optical semiconductor element 1 on the substrate 2 so as to efficiently reflect light emitted from the optical semiconductor element 1.
- the substrate 2 may be a metal substrate such as aluminum or copper, and the circuits 3 and 4 are formed on the surface of the metal substrate via an insulating layer (not shown). Is formed.
- a non-metallic substrate is used as the substrate 2, it is not necessary to form an insulating layer.
- Such non-metallic substrates include glass epoxy substrates, polybutylene terephthalate (PBT) substrates, polyimide substrates, polyester substrates, aluminum nitride substrates, boron nitride substrates, silicon nitride substrates, alumina ceramic substrates, glass substrates, flexible glass substrates. Is illustrated.
- a hybrid substrate made of an aluminum substrate or a copper substrate having an insulating resin layer, a printed wiring silicon substrate, a silicon carbide substrate, or a sapphire substrate can be used as the substrate 2.
- the circuits 3 and 4 are made of at least one metal selected from the group consisting of silver, copper, and aluminum having high electrical conductivity, or an alloy containing at least one selected from the group consisting of silver, copper, and aluminum. Used. Further, it is preferable that a light reflecting material 6 is formed on the substrate 2 so as to expose a portion on which the optical semiconductor element 1 is mounted.
- the optical semiconductor element 1 and the light reflecting material 6 are sealed with the sealing material 7, but only the optical semiconductor element 1 may be sealed with the sealing material 7 in a dome shape.
- FIG. 1 and FIG. 2 only one optical semiconductor element 1 is shown on the substrate 2, but a plurality of optical semiconductor elements 1 may be mounted on the substrate 2.
- a viscosity is a value in each share rate in 25 degreeC.
- Me, Ph, and Vi represent a methyl group, a phenyl group, and a vinyl group, respectively.
- the hardness, bending strength, linear expansion coefficient, adhesion to metal, and total light reflectance of the cured product were measured as follows.
- the curable silicone composition was heated at 150 ° C. for 2 hours to prepare a cured product.
- the hardness of the cured product was measured with a type D durometer specified in JIS K 7215-1986 “Method for testing the durometer hardness of plastics”.
- Total light reflectance of cured product The curable silicone composition was heated at 150 ° C. for 2 hours to prepare a cured product having a thickness of 100 ⁇ m. The total light reflectance of this cured product was measured by the method defined in JIS K 7375: 2008 “Plastic Total Light Transmittance and Total Light Reflectance Determination Method”.
- Example 1 formula: - (MeViSiO 2/2) 20 - 4.4 parts by mass of methyl vinyl polysiloxane having a linear methyl vinyl siloxane block represented by the formula and having both ends of the molecular chain blocked with hydroxyl groups, the formula: Me 2 ViSiO (Me 2 SiO) 160 SiMe 2 Vi Dimethylpolysiloxane blocked with dimethylvinylsiloxy group at both ends of the molecular chain represented by: 4.1 parts by mass, titanium oxide having an average primary particle size of 0.2 ⁇ m (SX-3103 manufactured by Sakai Chemical Industry), and an average particle size of 15 ⁇ m 21.8 parts by weight of spherical silica (HS-202 manufactured by Nippon Steel Materials Micron Co., Ltd.) and 4 parts by weight of n-octyltriethoxysilane were put into a loss mixer, mixed at room temperature, and then heated to 150 ° C. under reduced pressure.
- a silicone base was prepared by
- a curable silicone composition (I) is prepared by mixing a 3-divinyl-1,1,3,3-tetramethyldisiloxane solution (the amount of platinum atoms with respect to the present composition is 3.5 ppm by mass). ) was prepared. In addition, content of said linear methylvinylsiloxane block is 32.4 mass% of the sum total of the organopolysiloxane in this composition.
- the curable silicone composition and the properties of the cured product are shown in Table 1.
- Me 3 SiO (Me 2 SiO) 110 Si (OMe) 3 After putting 3 parts by mass of dimethylpolysiloxane blocked with a trimethylsiloxy group at one end of the molecular chain represented by the following formula, and mixing at room temperature with 3 parts by mass of dimethylpolysiloxane blocked with a trimethoxysiloxy group at the other end, A silicone base was prepared by kneading while heating to 150 ° C. under reduced pressure.
- a silicone base was prepared by kneading while heating to 150 ° C. under reduced pressure.
- Silicone composition (VII) was prepared.
- content of said linear methylvinylsiloxane block is 32.4 mass% of the sum total of the organopolysiloxane in this composition.
- the curable silicone composition and the properties of the cured product are shown in Table 1.
- Example 8 formula: - (MeViSiO 2/2) 20 - 5.8 parts by mass of a methylvinylpolysiloxane having a linear methylvinylsiloxane block represented by the formula and having both ends of the molecular chain blocked with hydroxyl groups, the formula: Me 2 ViSiO (Me 2 SiO) 160 SiMe 2 Vi 5.9 parts by mass of dimethylpolysiloxane blocked with dimethylvinylsiloxy group at both ends of the molecular chain represented by the formula: 72 parts by mass of titanium oxide having an average primary particle size of 0.24 ⁇ m (Taipaque R-630 manufactured by Ishihara Sangyo), an average particle size of 15 ⁇ m Of spherical silica (HS-202 manufactured by Nippon Steel Materials Micron), 6 parts by mass, 1 part by mass of n-decyltrimethoxysilane, and a viscosity of 125 mPa ⁇
- Me 3 SiO (Me 2 SiO) 110 Si (OMe) 3 After putting 3 parts by mass of dimethylpolysiloxane blocked with a trimethylsiloxy group at one end of the molecular chain represented by the following formula, and mixing at room temperature with 3 parts by mass of dimethylpolysiloxane blocked with a trimethoxysiloxy group at the other end, A silicone base was prepared by kneading while heating to 150 ° C. under reduced pressure.
- a curable silicone composition (XI) was prepared by mixing a 3-divinyl-1,1,3,3-tetramethyldisiloxane solution (with respect to the present composition, an amount in which platinum atoms are 3.5 ppm by mass). ) was prepared. In addition, content of said linear methylvinylsiloxane block is 32.4 mass% of the sum total of the organopolysiloxane in this composition. Table 2 shows the properties of the curable silicone composition and the cured product.
- a curable silicone composition (XV) is prepared by mixing a 3-divinyl-1,1,3,3-tetramethyldisiloxane solution (amount in which platinum atoms are 3 ppm by mass with respect to the present composition). Prepared. In addition, content of said linear methylvinylsiloxane block is 34.7 mass% of the sum total of the organopolysiloxane in this composition. Table 2 shows the properties of the curable silicone composition and the cured product.
- Example 10 to 12 Inside the support of either PET film, aluminum plate, or copper plate, a spacer with a thickness of 100 ⁇ m is installed so that a space of 5 cm ⁇ 5 cm can be taken, and the curability prepared above within the range surrounded by the spacer 0.8 g of the silicone composition was injected. Next, a release film is placed on the curable silicone composition and heated at 150 ° C. and a press pressure of 5 kg for 15 minutes to produce an integrally molded product of the light reflecting material comprising the cured product and the support. did. The appearance of the cured product was visually observed, and the results are shown in Table 3.
- Examples 13 to 15, Comparative Examples 13 to 15 Using a film coater (PI-1210) manufactured by Tester Sangyo Co., Ltd., the curable silicone composition prepared above was applied to any one of an aluminum plate, a copper plate, a PET film, and a glass plate with a gap size of 100 ⁇ m. And applied. The state of application was visually observed. Then, it heated in 150 degreeC oven for 1 hour, and produced the integral molded product of the light reflection material which consists of hardened
- PI-1210 manufactured by Tester Sangyo Co., Ltd.
- the adhesiveness to the support is good and the cured product does not have cracks or the like. I understood.
- the curable silicone composition of the present invention has thixotropy, dripping hardly occurs between the coating process and heat curing, and no change in shape was observed.
- the curable silicone composition of the present invention has a low coefficient of thermal expansion of a cured product obtained by curing, and has high light reflectivity in a thin film. Therefore, the curable silicone composition is suitable as a composite light reflecting material to be used integrally with other members. is there.
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Abstract
Description
R1 (4-a)Si(OR2)a
(式中、R1は炭素数6~20の非置換またはハロゲン置換の一価炭化水素基、R2はアルキル基、アルコキシアルキル基、アルケニル基、またはアシル基、aは1~3の整数である。)
で表されるオルガノシランおよび/または一般式:
で表されるオルガノシロキサンにより表面処理されていることを特徴とする。
R1 (4-a)Si(OR2)a
(式中、R1は炭素数6~20の非置換またはハロゲン置換の一価炭化水素基、R2はアルキル基、アルコキシアルキル基、アルケニル基、またはアシル基、aは1~3の整数である。)
で表されるオルガノシランおよび/または一般式:
で表されるオルガノシロキサンにより表面処理されていることを特徴とする。
C6H13Si(OCH3)3
C8H17Si(OC2H5)3
C10H21Si(OCH3)3
C12H25Si(OCH3)3
C14H29Si(OC2H5)3
C6H5-CH2CH2Si(OCH3)3
Me3SiO(Me2SiO)15Si(OMe)3
Me3SiO(Me2SiO)23Si(OMe)3
Me3SiO(Me2SiO)110Si(OMe)3
ViMe2SiO(Me2SiO)29Si(OMe)3
ViMe2SiO(Me2SiO)10Si(OMe)3
ViMe2SiO(Me2SiO)5Si(OMe)3
Me3SiO(MePhSiO)10Si(OMe)3
(A)一分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサン、
(B)一分子中に少なくとも2個のケイ素原子結合水素原子を有するオルガノポリシロキサン{(A)成分中のアルケニル基1モルに対して、本成分中のケイ素原子結合水素原子が0.1~10モルとなる量}、
(C)平均粒子径0.05~10μmの酸化チタン粉末(本組成物中、50~90質量%となる量)、
(D)平均粒子径0.1~20μmの酸化チタン以外の無機粉末(本組成物中、5~40質量%となる量)、
(E)(E-1)一般式:
R1 (4-a)Si(OR2)a
(式中、R1は炭素数6~20の非置換またはハロゲン置換の一価炭化水素基、R2はアルキル基、アルコキシアルキル基、アルケニル基、またはアシル基、aは1~3の整数である。)
で表されるオルガノシラン(本組成物100質量部に対して0.1~10質量部)および/または(E-2)一般式:
で表されるオルガノシロキサン(本組成物100質量部に対して0.1~10質量部)、および
(F)ヒドロシリル化反応用触媒(本組成物のヒドロシリル化反応を促進する量)
から少なくともなる硬化性シリコーン組成物が好ましい。
-(R7R8SiO2/2)m-
で表される直鎖状シロキサンブロックを少なくとも有するオルガノポリシロキサンであり、(B)成分は、(B-1)一般式:
-(R9HSiO2/2)n-
で表される直鎖状シロキサンブロックを少なくとも有するオルガノポリシロキサンであることが好ましい。
-(R7 cSiO(4-c)/2)-
(式中、R7は前記と同じであり、cは0.5~2の数である。)
で表されるシロキサンもしくはその繰り返しからなるポリシロキサンが例示される。なお、このブロック共重合体の分子鎖末端の基としては、水酸基、上記と同様のアルコキシ基、または上記と同様のオルガノシロキシ基が例示される。
硬化性シリコーン組成物を150℃で2時間加熱して硬化物を作製した。この硬化物の硬さを、JIS K 7215-1986「プラスチックのデュロメータ硬さ試験方法」に規定のタイプDデュロメータにより測定した。
硬化性シリコーン組成物を150℃で2時間加熱して硬化物を作製した。この硬化物の曲げ強度を、JIS K 6911-1995「熱硬化性プラスチック一般試験方法」に規定の方法により測定した。
硬化性シリコーン組成物を150℃で2時間加熱して硬化物を作製した。この硬化物の線膨張率を、JIS K 7197-1991「プラスチックの熱機械分析による線膨張率の試験方法」に規定の方法により測定した。
硬化性シリコーン組成物を150℃で2時間加熱して、厚さ100μmの硬化物を作製した。この硬化物の全光線反射率を、JIS K 7375:2008「プラスチック 全光線透過率及び全光線反射率の求め方」に規定の方法により測定した。
25mm×75mmのアルミニウム板上に、硬化性シリコーン組成物をディスペンサーにより約100mgづつを5ヶ所に塗布した。次に、この組成物に厚さ1mmの6mm角のアルミニウム製チップを被せ、1kgの板により圧着した状態で、150℃で2時間加熱して硬化させた。その後、室温に冷却し、シェア強度測定装置(西進商事株式会社製のボンドテスターSS-100KP)によりダイシェア強度を測定した。また、上記と同様にして、銅板に対する銅板製チップのダイシェア強度についても測定した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 4.4質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 4.1質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 60質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 21.8質量部、およびn-オクチルトリエトキシシラン 4質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 4.7質量部(シリコーンベース中のメチルビニルポリシロキサンとジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.5モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(I)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の32.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表1に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 4.4質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 4.1質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 51.8質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 30質量部、および粘度24mPa・sである、式:
Me2ViSiO(Me2SiO)29Si(OMe)3
で表される分子鎖片末端がジメチルビニルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 4質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 4.7質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.5モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(II)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の32.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表1に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 5.8質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 5.9質量部、平均一次粒子径0.24μmの酸化チタン(石原産業製のタイペークR-630) 72質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 6質量部、n-デシルトリメトキシシラン 1質量部、および粘度125mPa・sである、式:
Me3SiO(Me2SiO)110Si(OMe)3
で表される分子鎖片末端がトリメチルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 3質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 5.9質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.4モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(III)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の34.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表1に示した。
式:
-(MeViSiO2/2)6-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 4.2質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 4.0質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 72質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 10質量部、n-オクチルトリエトキシシラン 3質量部、および粘度22mPa・sである、式:
Me3SiO(Me2SiO)23Si(OMe)3
で表される分子鎖片末端がトリメチルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 1質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)20-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロキシ基で封鎖されたメチルハイドロジェンポリシロキサン 4.5質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.3モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1.5質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で300ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で5ppmとなる量)を混合して、硬化性シリコーン組成物(IV)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の34.5質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表1に示した。
式:
-(MeViSiO2/2)6-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 4.4質量部、式:
Me2ViSiO(Me2SiO)46SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 4.1質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 65質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 17質量部、n-オクチルトリエトキシシラン 2質量部、および粘度125mPa・sである、式:
Me3SiO(Me2SiO)110Si(OMe)3
で表される分子鎖片末端がトリメチルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 2質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 4.7質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.5モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3ppmとなる量)を混合して、硬化性シリコーン組成物(V)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の34.7質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表1に示した。
式:
-(MeViSiO2/2)6-
で表される直鎖状メチルビニルシロキサンブロック5個と式:
-(MePhSiO)6-
で表される直鎖状メチルフェニルシロキサンブロック5個が交互に連結し、分子鎖両末端がトリメチルシロキシ基で封鎖されたメチルビニルシロキサン・メチルフェニルシロキサンブロック共重合体 5.8質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 5.9質量部、平均一次粒子径0.24μmの酸化チタン(石原産業製のタイペークR-630) 70質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 8質量部、n-デシルトリメトキシシラン 2質量部、および粘度22mPa・sである、式:
Me3SiO(Me2SiO)23Si(OMe)3
で表される分子鎖片末端がトリメチルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 2質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)20-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロキシ基で封鎖されたメチルハイドロジェンポリシロキサン 5.9質量部(シリコーンベース中のメチルビニルシロキサン・メチルフェニルシロキサンブロック共重合体と分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.5モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3ppmとなる量)を混合して、硬化性シリコーン組成物(VI)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の34.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表1に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 4.4質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 4.1質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 60質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 21.8質量部、およびn-オクチルトリエトキシシラン 4質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 4.7質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.5モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合し、最後に、イソパラフィン系溶剤(出光興産社製のIPソルベント1620、沸点=162~202℃)を本組成物の固形分量が95質量%となるように混合して、硬化性シリコーン組成物(VII)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の32.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表1に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 5.8質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 5.9質量部、平均一次粒子径0.24μmの酸化チタン(石原産業製のタイペークR-630) 72質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 6質量部、n-デシルトリメトキシシラン 1質量部、および粘度125mPa・sである、式:
Me3SiO(Me2SiO)110Si(OMe)3
で表される分子鎖片末端がトリメチルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 3質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 5.9質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.4モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合し、最後に、シリコーン系溶剤(東レ・ダウコーング社製のOS-20、沸点=152℃)を本組成物の固形分量が95質量%となるように混合して、硬化性シリコーン組成物(VIII)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の34.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表1に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 7.2質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 16.6質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 55.0質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 7質量部、および粘度24mPa・sである、式:
Me2ViSiO(Me2SiO)29Si(OMe)3
で表される分子鎖片末端がジメチルビニルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 4質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 8.2質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.5モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 2質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(IX)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の23.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表1に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 4.4質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 4.1質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 25質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 56.3質量部、およびn-オクチルトリエトキシシラン 4質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 4.7質量部(シリコーンベース中のメチルビニルポリシロキサンとジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.5モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(X)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の32.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表2に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 4.4質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 4.1質量部、平均一次粒子径0.44μmのアルミナ(住友化学製のAES-12) 60質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 21.8質量部、およびn-オクチルトリエトキシシラン 4質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 4.7質量部(シリコーンベース中のメチルビニルポリシロキサンとジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.5モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(XI)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の32.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表2に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 5.8質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 5.9質量部、平均一次粒子径0.24μmの酸化チタン(石原産業製のタイペークR-630) 78質量部、および粘度24mPa・sである、式:
Me2ViSiO(Me2SiO)29Si(OMe)3
で表される分子鎖片末端がジメチルビニルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 4質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 5.9質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.4モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(XII)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の34.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表2に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 7.6質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 7.7質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 56質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 4質量部、および粘度24mPa・sである、式:
Me3SiO(Me2SiO)110Si(OMe)3
で表される分子鎖片末端がトリメチルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 5.2質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 7.7質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.4モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1.3質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(XIII)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の34.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表2に示した。
式:
-(MeViSiO2/2)6-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 4.2質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 4質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 72質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 10質量部、およびメチルトリメトキシシラン 4質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)20-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロキシ基で封鎖されたメチルハイドロジェンポリシロキサン 4.5質量部(シリコーンベース中のメチルビニルポリシロキサンとジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.3モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1.5質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で300ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で5ppmとなる量)を混合して、硬化性シリコーン組成物(XIV)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の34.5質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表2に示した。
式:
-(MeViSiO2/2)6-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 4.4質量部、式:
Me2ViSiO(Me2SiO)46SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 4.1質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 65質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 17質量部、メチルトリメトキシシラン 2質量部、およびフェニルトリメトキシシラン 2質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 4.7質量部(シリコーンベース中のメチルビニルポリシロキサンとジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.2モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3ppmとなる量)を混合して、硬化性シリコーン組成物(XV)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の34.7質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表2に示した。
式:
-(MeViSiO2/2)-
で表されるメチルビニルシロキサン3個と式:
-(Me2SiO2/2)-
で表されるジメチルシロキサン6個がランダムに連結し、分子鎖両末端が水酸基で封鎖されたジメチルシロキサン・メチルビニルシロキサンランダム共重合体 8.5質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 5.9質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 65質量部、および平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 16.3質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 5.7質量部(シリコーンベース中のジメチルシロキサン・メチルビニルシロキサンランダム共重合体とジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が2.6モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1.1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(XVI)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の15.1質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表2に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 3.7質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 5.9質量部、平均一次粒子径0.2μmの酸化チタン(堺化学工業製のSX-3103) 65質量部、および平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 16.3質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(Me2SiO2/2)-
で表されるジメチルシロキサン3個と式:
-(MeHSiO2/2)-
で表されるメチルハイドロジェンシロキサン7個とがランダムに連結し、分子鎖両末端がトリメチルシロキシ基で封鎖されたメチルハイドロジェンシロキサン・ジメチルシロキサンランダム共重合体 8.1質量部(シリコーンベース中のメチルビニルポリシロキサンとジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.7モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 1.1質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(XVII)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の20.6質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表2に示した。
式:
-(MeViSiO2/2)20-
で表される直鎖状メチルビニルシロキサンブロックを有し、分子鎖両末端が水酸基で封鎖されたメチルビニルポリシロキサン 7.2質量部、式:
Me2ViSiO(Me2SiO)160SiMe2Vi
で表される分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン 16.6質量部、平均一次粒子径0.44μmのアルミナ(住友化学製のAES-12) 55.0質量部、平均粒子径15μmの球状シリカ(新日鉄マテリアルズ マイクロン社製のHS-202) 7質量部、および粘度24mPa・sである、式:
Me2ViSiO(Me2SiO)29Si(OMe)3
で表される分子鎖片末端がジメチルビニルシロキシ基で封鎖され、他の分子鎖片末端がトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン 4質量部をロスミキサーに投入し、室温で混合した後、減圧下、150℃に加熱しながら混練して、シリコーンベースを調製した。
-(MeHSiO2/2)50-
で表される直鎖状メチルハイドロジェンシロキサンブロックを有し、分子鎖両末端がトリメチルシロシキ基で封鎖されたメチルハイドロジェンポリシロキサン 8.2質量部(シリコーンベース中のメチルビニルポリシロキサンと分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン中のビニル基の合計1モルに対して、本成分中のケイ素原子結合水素原子が1.5モルとなる量)、粘度20mPa・sの分子鎖両末端水酸基封鎖ジメチルシロキサン・メチルビニルシロキサン共重合オリゴマーと3-グリシドキシプロピルトリメトキシシランとの質量比1:2の縮合反応物 2質量部、および1-エチニル-1-シクロヘキサノール(本組成物に対して、質量単位で200ppmとなる量)を混合した後、白金の1,3-ジビニル-1,1,3,3-テトラメチルジシロキサンの1,3-ジビニル-1,1,3,3-テトラメチルジシロキサン溶液(本組成物に対して、白金原子が質量単位で3.5ppmとなる量)を混合して、硬化性シリコーン組成物(XVIII)を調製した。なお、上記の直鎖状メチルビニルシロキサンブロックの含有量は本組成物中のオルガノポリシロキサンの合計の23.4質量%である。この硬化性シリコーン組成物、およびその硬化物の特性を表2に示した。
PETフィルム、アルミニウム板、または銅板のいずれかの支持体の内側に、厚みが100μmのスペーサーを5cm×5cmの空間が取れるように設置し、スペーサーで囲まれた範囲内に上記で調製した硬化性シリコーン組成物0.8gを注入した。次に、硬化性シリコーン組成物の上に離型フィルムを被せ、150℃、プレス圧5Kgにて、15分間加熱して、硬化物からなる光反射材と前記支持体との一体成形物を作製した。硬化物の外観を目視により観察し、その結果を表3に示した。
テスター産業社製のフィルムコーター(PI-1210)を用いて、アルミニウム板、銅板、PETフィルム、またはガラス板のいずれかの支持体上に、上記で調製した硬化性シリコーン組成物をギャップサイズ100μmにて塗布した。塗布の状態を目視により観察した。その後、150℃のオーブンで1時間加熱して、硬化物からなる光反射材と前記支持体との一体成形物を作製した。硬化物の外観を目視により観察し、その結果を表4に示した。
ニューロング精密工業社製の自動スクリーン印刷機(DP-320)を用いて、PETフィルムを支持体として、上記で調製した硬化性シリコーン組成物をスクリーン印刷した。スクリーン板としてSUS製のメッシュサイズ#100、線径が40μmのものを用いた。スクリーン印刷の状態を目視により観察した。その後、150℃のオーブンで1時間加熱して、硬化物からなる光反射材と前記支持体との一体成形物を作製した。硬化物の外観を目視により観察し、その結果を表5に示した。
2 基板
3 回路
4 回路
5 ボンディングワイヤ
6 光反射材
7 封止材
Claims (11)
- 平均粒子径0.05~10μmの酸化チタン粉末および平均粒子径0.1~20μmの酸化チタン以外の無機粉末を含有し、前記酸化チタン粉末の含有量が本組成物中の50~90質量%であり、前記無機粉末の含有量が本組成物中の5~40質量%である熱硬化性シリコーン組成物であって、前記酸化チタン粉末および前記無機粉末が、一般式:
R1 aSi(OR2)(4-a)
(式中、R1は炭素数6~20の非置換またはハロゲン置換の一価炭化水素基、R2はアルキル基、アルコキシアルキル基、アルケニル基、またはアシル基、aは1~3の整数である。)
で表されるオルガノシランおよび/または一般式:
で表されるオルガノシロキサンにより表面処理されていることを特徴とする硬化性シリコーン組成物。 - 硬化性シリコーン組成物が、
(A)一分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサン、
(B)一分子中に少なくとも2個のケイ素原子結合水素原子を有するオルガノポリシロキサン{(A)成分中のアルケニル基1モルに対して、本成分中のケイ素原子結合水素原子が0.1~10モルとなる量}、
(C)平均粒子径0.05~10μmの酸化チタン粉末(本組成物中、50~90質量%となる量)、
(D)平均粒子径0.1~20μmの酸化チタン以外の無機粉末(本組成物中、5~40質量%となる量)、
(E)(E-1)一般式:
R1 (4-a)Si(OR2)a
(式中、R1は炭素数6~20の非置換またはハロゲン置換の一価炭化水素基、R2はアルキル基、アルコキシアルキル基、アルケニル基、またはアシル基、aは1~3の整数である。)
で表されるオルガノシラン(本組成物100質量部に対して0.1~10質量部)および/または(E-2)一般式:
で表されるオルガノシロキサン(本組成物100質量部に対して0.1~10質量部)、および
(F)ヒドロシリル化反応用触媒(本組成物のヒドロシリル化反応を促進する量)
から少なくともなるヒドロリル化反応硬化性シリコーン組成物である、請求項1に記載の硬化性シリコーン組成物。 - (A)成分が、(A-1)一般式:
-(R7R8SiO2/2)m-
(式中、R7は炭素原子数1~6のアルキル基またはフェニル基、R8は炭素原子数2~10のアルケニル基、mは5~50の整数である。)
で表される直鎖状ポリシロキサンブロックを少なくとも有するオルガノポリシロキサン{ただし、上記直鎖状ポリシロキサンブロックの含有量が本組成物中のオルガノポリシロキサンの合計の20~60質量%}であり、(B)成分が、(B-1)一般式:
-(R9HSiO2/2)n-
(式中、R9は炭素原子数1~6のアルキル基またはフェニル基、nは10~100の整数である。)
で表される直鎖状ポリシロキサンブロックを少なくとも有するオルガノポリシロキサンである、請求項2に記載の硬化性シリコーン組成物。 - さらに、(A)成分として(A-2)一分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサン{ただし、(A-1)成分を除く}を、(A-1)成分中のアルケニル基と本成分中のアルケニル基の合計に対して、本成分中のアルケニル基が多くとも10モル%となる量を含有する、請求項3に記載の硬化性シリコーン組成物。
- 請求項1乃至5のいずれか1項に記載の硬化性シリコーン組成物を硬化してなる硬化物。
- 25~200℃における平均線膨張率が100ppm/℃以下である、請求項6に記載の硬化物。
- 100μmのフィルム状硬化物における全光線反射率が90%以上である、請求項6に記載の硬化物。
- 請求項1乃至5のいずれか1項に記載の硬化性シリコーン組成物を成型工程により、支持体上に膜状又は板状の硬化物を形成する方法。
- 請求項1乃至5のいずれか1項に記載の硬化性シリコーン組成物を塗布工程により、支持体上に膜状又は板状の硬化物を形成する方法。
- 請求項6乃至8のいずれか1項に記載の硬化物からなる光反射材を有する光半導体装置。
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JP2023062628A (ja) | 2021-10-21 | 2023-05-08 | デュポン・東レ・スペシャルティ・マテリアル株式会社 | 熱伝導性シリコーン組成物 |
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CN106661329B (zh) | 2020-06-23 |
CN106661329A (zh) | 2017-05-10 |
TW201615714A (zh) | 2016-05-01 |
KR20170052649A (ko) | 2017-05-12 |
JP6590445B2 (ja) | 2019-10-16 |
JPWO2016038836A1 (ja) | 2017-06-22 |
TWI690553B (zh) | 2020-04-11 |
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