CN115926742A - Organic silicon gel for waterproofing instruments and meters and preparation method thereof - Google Patents
Organic silicon gel for waterproofing instruments and meters and preparation method thereof Download PDFInfo
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- CN115926742A CN115926742A CN202211538472.3A CN202211538472A CN115926742A CN 115926742 A CN115926742 A CN 115926742A CN 202211538472 A CN202211538472 A CN 202211538472A CN 115926742 A CN115926742 A CN 115926742A
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 21
- 239000010703 silicon Substances 0.000 title claims abstract description 21
- 238000004078 waterproofing Methods 0.000 title claims description 15
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 30
- -1 polysiloxane Polymers 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000001257 hydrogen Substances 0.000 claims abstract description 19
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 19
- 229920002545 silicone oil Polymers 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims abstract description 11
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims abstract description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 10
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000011575 calcium Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229920001661 Chitosan Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 125000004103 aminoalkyl group Chemical group 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000008213 purified water Substances 0.000 claims description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 229910014497 Ca10(PO4)6(OH)2 Inorganic materials 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 150000000703 Cerium Chemical class 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229920005601 base polymer Polymers 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 28
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- JUWSSMXCCAMYGX-UHFFFAOYSA-N gold platinum Chemical compound [Pt].[Au] JUWSSMXCCAMYGX-UHFFFAOYSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
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Abstract
The invention relates to the technical field of gel, in particular to waterproof organic silicon gel for instruments and meters and a preparation method thereof, wherein the organic silicon gel comprises a component A and a component B, and the mass ratio of the component A to the component B is 1:4 to 12, wherein: the component A comprises a platinum catalyst, a metal salt and a cross-linking agent hydrogen-containing silicone oil; the component B is a base polymer and comprises polysiloxane, nano silicon dioxide fluid and hydroxyapatite. According to the invention, the polysiloxane is adopted to improve the hydrophobicity of the gel, the nano-silica and the hydroxyapatite with high porosity are utilized to improve the adhesion of the organic silicon gel, the solidified gel can be stably attached to the surface or the internal structure of an instrument, the use stability of the gel can be effectively improved, and meanwhile, the waterproof performance is improved.
Description
Technical Field
The invention relates to the technical field of gel, in particular to waterproof organic silicon gel for instruments and meters and a preparation method thereof.
Background
The organic silicon gel is a special organic silicon rubber, and is generally divided into a component A and a component B, wherein the component A and the component B are divided into 1:1, the adhesive is vulcanized to form soft and transparent organic silicon gel, can keep elasticity for a long time within the temperature range of-65-200 ℃, has excellent electrical performance and chemical stability, has physiological inertia, can be used as a coating and encapsulating material for moisture prevention and insulation of electronic components, an inner coating material of transistors and integrated circuits, an elastic adhesive of optical instruments and the like, and has wide application prospect.
The existing organic silicon gel has poor adhesiveness after being cured, is difficult to stably adhere to the surface of a base material, has unstable hydrophobic property, is easy to fall off or damage, and cannot meet the waterproof working requirement of instruments and meters.
Disclosure of Invention
The invention aims to provide a waterproof organic silicon gel for instruments and meters and a preparation method thereof, so as to solve the problems in the background technology.
The invention is realized by the following technical scheme:
the organic silicon gel for waterproofing instruments and meters comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1:4 to 12, wherein:
the component A comprises the following components in a mass ratio of 2-4: 1 to 2: 4-6 of platinum catalyst, metal salt and cross-linking agent hydrogen-containing silicone oil;
the component B is a basic polymer and comprises the following components in a mass ratio of 4-7: 1 to 4: 2-4 of polysiloxane, nano silicon dioxide and hydroxyapatite.
Preferably, the metal salt is any one of zinc, calcium, aluminum and cerium salt.
Preferably, the hydrogen-containing silicone oil is methyl hydrogen-containing silicone oil or ethyl hydrogen-containing silicone oil, and the hydrogen content is 0.6-0.9%.
Preferably, the polysiloxane comprises at least one of polymethylsiloxane, polydimethylsiloxane and polyphenylsiloxane.
Preferably, the polysiloxane terminates with an aminoalkyl group or a hydroxyalkyl group.
Preferably, the hydroxyapatite is nano-sized or micro-sized powder with a chemical formula of Ca 2 PO 4 (OH) or Ca 10 (PO 4 ) 6 (OH) 2 。
As a further scheme of the invention, the component B also comprises a nano titanium dioxide fluid.
Preferably, the nano silicon dioxide fluid is prepared by dispersing anatase or rutile crystal form nano titanium dioxide in medium purified water, the pH value of the nano silicon dioxide fluid is 6-7, the average particle size is 15-25 nm, the content of the used nano titanium dioxide is 25-40%, and the particle size is 5-30 nm.
As a further scheme of the invention, the organic silicon gel also comprises chitosan, and the chitosan is used for bacteriostasis.
The invention also provides a method for preparing the organic silicon gel, which comprises the following steps: stirring the raw materials of the component A and the component B according to the components and the proportion, uniformly mixing, and standing to obtain a mixture of the component A and a mixture of the component B for later use; and then mixing the mixture of the component A and the mixture of the component B according to a proportion at room temperature, adding 0-0.2 wt.% of water, and uniformly stirring to obtain the organic silicon gel.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, polysiloxane is adopted to improve the hydrophobicity of the gel, and the nano-silica fluid and hydroxyapatite with high porosity are utilized to improve the adhesion of the organic silicon gel, so that the cured gel can be stably attached to the surface or the internal structure of an instrument, the stability of the gel in use can be effectively improved, and the waterproof performance is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the performance test results of the examples and comparative examples of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the embodiment provides a waterproof organic silicon gel for instruments and meters, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1:12, wherein:
the component A comprises 2 parts of platinum (gold) catalyst, 2 parts of calcium chloride and 6 parts of cross-linking agent methyl hydrogen-containing silicone oil, wherein the hydrogen content in the hydrogen-containing silicone oil is 0.8%;
the component B is a basic polymer and comprises 4 parts of polysiloxane with amino alkyl at the tail end, 4 parts of nano silicon dioxide fluid and 2 parts of nano hydroxyapatite Ca in parts by mass 10 (PO 4 ) 6 (OH) 2 (ii) a Wherein, the nano silicon dioxide fluid is prepared by dispersing anatase or rutile crystal form nano titanium dioxide in medium purified water, the pH value is 6-7, the average grain diameter is 15-25 nm, the content of the used nano titanium dioxide is 25%, and the grain diameter is 5-30 nm.
This example also provides a method of making the above silicone gel, comprising the steps of: preparing the component A and the component B according to the raw material components and the mixture ratio, stirring for 5-15 min at 200r/min respectively, uniformly mixing, and standing to obtain a component A mixture and a component B mixture for later use; and mixing the mixture of the component A and the mixture of the component B in proportion, uniformly stirring, coating the gel on the surface of an instrument or filling and sealing components inside the instrument, and curing at room temperature for 12-48 h to obtain the organic silicon gel.
Example 2:
the embodiment provides a silicone gel for waterproofing instruments and meters, and is different from the embodiment 1 in that the mass ratio of the component A to the component B is 1:8, the component A comprises 3 parts of platinum catalyst, 1 part of ammonium ceric nitrate and 6 parts of cross-linking agent methyl hydrogen-containing silicone oil by mass, wherein the hydrogen content in the hydrogen-containing silicone oil is 0.7%;
the component B is a basic polymer and comprises 6 parts of polydimethylsiloxane with amino alkyl at the tail end, 2 parts of nano silicon dioxide fluid and 2 parts of nano hydroxyapatite Ca in parts by mass 2 PO 4 (OH), polysiloxane is; wherein, the nano silicon dioxide fluid is prepared by dispersing anatase or rutile crystal form nano titanium dioxide in medium purified water, the pH value is 6-7, the average grain diameter is 15-25 nm, the content of the used nano titanium dioxide is 35%, and the grain diameter is 5-30 nm.
The method of preparation of the silicone gel provided in this example was consistent with example 1.
Example 3:
the embodiment provides a silicone gel for waterproofing instruments and meters, and is different from the embodiment 1 in that the mass ratio of the component A to the component B is 1:4, wherein:
the component A comprises 4 parts of platinum catalyst, 2 parts of calcium chloride and 4 parts of cross-linking agent ethyl hydrogen-containing silicone oil in parts by mass, wherein the hydrogen content in the hydrogen-containing silicone oil is 0.9%;
the component B is a basic polymer and comprises 4 parts of polysiloxane, 1 part of nano fluid silicon dioxide, 1 part of nano titanium dioxide fluid and 2 parts of nano hydroxyapatite Ca in parts by mass 10 (PO 4 ) 6 (OH) 2 The polysiloxane is a polymethylsiloxane terminated with a hydroxyalkyl group.
The method of preparation of the silicone gel provided in this example was consistent with example 1.
Example 4:
the embodiment provides a waterproof organic silicon gel for instruments and meters and a preparation method thereof, and the difference from the embodiment 3 is that the organic silicon gel comprises a component A, a component B and chitosan for bacteriostasis, and the mass ratio of the component A to the component B to the chitosan is 1:4:0.2, the remainder being in accordance with example 3.
Taking PP base materials of the same type as elements to be coated, taking GN502 as a comparison example (purchased from BAIHERE, the product number is E1007-30 g), wiping the surface of the PP base material with ethanol, removing oil stains and impurities on the surface, fully mixing the components A and B of the examples 1-4 and the comparison example GN502, and measuring the viscosity of the components at room temperature by using a viscometer respectively; and respectively coating the surface of a PP substrate with the coating, respectively measuring the complete curing time, the hardness and the waterproof rate according to national standards, and testing the antibacterial rate according to the standard GB/T31402-2015, wherein the test results are shown in figure 1 and the following table.
As can be seen from the above table and fig. 1, the silicone gels provided in examples 1 to 4 of the present invention have better hydrophobicity than GN502, and examples 1 to 2 having a higher ratio of nanosilica to highly porous hydroxyapatite have better adhesion and water resistance, and can resist the water pressure of a larger height of water column, and the silicone gels provided in the present invention can be stably attached to the surface of a substrate after curing, and it is known from comparison of the detection data of examples 3 and 4 that a small amount of chitosan added to the silicone gels can play a significant antibacterial role.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The organic silicon gel for waterproofing instruments and meters comprises a component A and a component B, and is characterized in that the mass ratio of the component A to the component B is 1:4 to 12, wherein:
the component A comprises a platinum catalyst, metal salt and cross-linking agent hydrogen-containing silicone oil, and the mass ratio of the platinum catalyst to the metal salt is 2-4: 1 to 2:4 to 6;
the component B is a basic polymer and comprises polysiloxane, nano silicon dioxide and hydroxyapatite, and the mass ratio of the components is 4-7: 1 to 4:2 to 4.
2. The silicone gel for waterproofing instruments and meters according to claim 1, wherein the metal salt is any one of zinc, calcium, aluminum, cerium salt.
3. The silicone gel for waterproofing instruments and meters according to claim 1, wherein the hydrogen-containing silicone oil is methyl hydrogen-containing silicone oil or ethyl hydrogen-containing silicone oil.
4. The silicone gel for waterproofing instruments and meters according to claim 1, wherein said polysiloxane comprises at least one of polymethylsiloxane, polydimethylsiloxane, and polyphenylsiloxane.
5. The silicone gel for instrument waterproofing according to claim 4, wherein the polysiloxane is terminated with aminoalkyl group or hydroxyalkyl group.
6. The silicone gel for waterproofing instruments and meters according to claim 1, wherein said hydroxyapatite is in the form of nano or micro powder of chemical formula Ca 2 PO 4 (OH) or Ca 10 (PO 4 ) 6 (OH) 2 。
7. The silicone gel for waterproofing instruments and meters according to any of claims 1 to 6, wherein said component B further comprises a nano titanium dioxide fluid.
8. The silicone gel for waterproofing instruments and meters according to claim 7, wherein the nano silica fluid is prepared by dispersing anatase or rutile crystalline nano titania in medium purified water, and has a pH of 6 to 7, an average particle size of 15 to 25nm, a content of the nano titania used of 25 to 40%, and a particle size of 5 to 30nm.
9. The silicone gel for waterproofing instruments and meters according to any one of claims 1 to 6, further comprising chitosan for bacteriostasis.
10. A method for preparing the silicone gel for waterproofing instruments and meters according to claim 1, characterized by the following steps: stirring the raw materials of the component A and the component B according to the components and the proportion, uniformly mixing, and standing to obtain a mixture of the component A and a mixture of the component B for later use; and mixing the mixture of the component A and the mixture of the component B in proportion at room temperature, and uniformly stirring to obtain the organic silicon gel.
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| CN202211538472.3A CN115926742A (en) | 2022-12-02 | 2022-12-02 | Organic silicon gel for waterproofing instruments and meters and preparation method thereof |
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