CN118165252A - Silane-terminated polyether and preparation method thereof, and single-component polyurethane anticorrosive paint containing silane-terminated polyether and preparation method thereof - Google Patents
Silane-terminated polyether and preparation method thereof, and single-component polyurethane anticorrosive paint containing silane-terminated polyether and preparation method thereof Download PDFInfo
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- CN118165252A CN118165252A CN202410161227.8A CN202410161227A CN118165252A CN 118165252 A CN118165252 A CN 118165252A CN 202410161227 A CN202410161227 A CN 202410161227A CN 118165252 A CN118165252 A CN 118165252A
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- 229920000570 polyether Polymers 0.000 title claims abstract description 133
- 239000004721 Polyphenylene oxide Substances 0.000 title claims abstract description 132
- 239000003973 paint Substances 0.000 title claims abstract description 52
- 239000004814 polyurethane Substances 0.000 title claims abstract description 33
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920005862 polyol Polymers 0.000 claims abstract description 55
- 150000003077 polyols Chemical class 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000012948 isocyanate Substances 0.000 claims abstract description 34
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 34
- 238000000576 coating method Methods 0.000 claims abstract description 32
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910000077 silane Inorganic materials 0.000 claims abstract description 27
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 25
- 229920000909 polytetrahydrofuran Polymers 0.000 claims abstract description 20
- 229920001451 polypropylene glycol Polymers 0.000 claims abstract description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 63
- 239000003054 catalyst Substances 0.000 claims description 50
- 239000002608 ionic liquid Substances 0.000 claims description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 40
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 40
- 229910052783 alkali metal Inorganic materials 0.000 claims description 39
- 150000001340 alkali metals Chemical class 0.000 claims description 39
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- 239000000126 substance Substances 0.000 claims description 31
- 239000002250 absorbent Substances 0.000 claims description 30
- 230000002745 absorbent Effects 0.000 claims description 30
- 239000003513 alkali Substances 0.000 claims description 30
- 239000002131 composite material Substances 0.000 claims description 28
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 26
- 239000002270 dispersing agent Substances 0.000 claims description 26
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 claims description 25
- 239000002516 radical scavenger Substances 0.000 claims description 25
- 229910052757 nitrogen Inorganic materials 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 150000002009 diols Chemical class 0.000 claims description 16
- 229910021389 graphene Inorganic materials 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 claims description 16
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 16
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 claims description 14
- 239000013530 defoamer Substances 0.000 claims description 14
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 claims description 14
- 239000004952 Polyamide Substances 0.000 claims description 13
- 229920006021 bio-based polyamide Polymers 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 229920002647 polyamide Polymers 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 13
- 239000004408 titanium dioxide Substances 0.000 claims description 13
- 239000002518 antifoaming agent Substances 0.000 claims description 12
- LZWQNOHZMQIFBX-UHFFFAOYSA-N lithium;2-methylpropan-2-olate Chemical compound [Li+].CC(C)(C)[O-] LZWQNOHZMQIFBX-UHFFFAOYSA-N 0.000 claims description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 11
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000908 ammonium hydroxide Substances 0.000 claims description 11
- 239000006185 dispersion Substances 0.000 claims description 10
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 8
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 8
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 8
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000002585 base Substances 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 6
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 claims description 6
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 claims description 6
- 238000009736 wetting Methods 0.000 claims description 6
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 150000008360 acrylonitriles Chemical class 0.000 claims description 5
- 125000000129 anionic group Chemical group 0.000 claims description 5
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 5
- 239000012965 benzophenone Substances 0.000 claims description 5
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 5
- 239000012964 benzotriazole Substances 0.000 claims description 5
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 235000011056 potassium acetate Nutrition 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 5
- 229960001860 salicylate Drugs 0.000 claims description 5
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000012974 tin catalyst Substances 0.000 claims description 5
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical group [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 claims description 5
- 239000008096 xylene Substances 0.000 claims description 5
- 239000013522 chelant Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 32
- 150000003839 salts Chemical class 0.000 abstract description 20
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract description 19
- 238000005260 corrosion Methods 0.000 abstract description 17
- 229910000831 Steel Inorganic materials 0.000 abstract description 15
- 239000010959 steel Substances 0.000 abstract description 15
- 239000000758 substrate Substances 0.000 abstract description 15
- 230000032683 aging Effects 0.000 abstract description 11
- 239000002253 acid Substances 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 10
- 150000002148 esters Chemical class 0.000 abstract description 7
- 239000007921 spray Substances 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 21
- 239000000203 mixture Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 13
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- 239000007864 aqueous solution Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000010998 test method Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- 239000002966 varnish Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 229920001228 polyisocyanate Polymers 0.000 description 4
- 239000005056 polyisocyanate Substances 0.000 description 4
- 150000002334 glycols Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- -1 polypentamethylene Polymers 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 231100000171 higher toxicity Toxicity 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 239000001038 titanium pigment Substances 0.000 description 1
- 231100000925 very toxic Toxicity 0.000 description 1
Classifications
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/336—Polymers modified by chemical after-treatment with organic compounds containing silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides silane-terminated polyether and a preparation method thereof, and a single-component polychloroethyl corrosion-resistant coating containing the silane-terminated polyether and a preparation method thereof. The silane-terminated polyether has a structure represented by the general formula (1), wherein R 1 is a divalent residue obtained after removal of two hydroxyl groups from a polyether polyol selected from one or more of a polypropylene oxide polyol having a hydroxyl functionality of 2 or 3 and a number average molecular weight of 100 to 3000 and a polytetrahydrofuran polyol. The silane end capped polyether containing the urethane groups has low preparation cost and high reaction rate, and can be used as a raw material for preparing non-isocyanate polychlorinated ester anticorrosive paint. When the non-isocyanate polyurethane anticorrosive coating is applied to a construction steel structure, a coating film formed from the non-isocyanate polyurethane anticorrosive coating has excellent anticorrosive properties (for example, acid resistance, salt water resistance, salt spray resistance, artificial aging resistance, and the like) and substrate adhesion.
Description
Technical Field
The invention relates to the technical field of anticorrosive paint, in particular to silane end capped polyether and a preparation method thereof, and a single-component polyurethane anticorrosive paint containing the silane end capped polyether and a preparation method thereof.
Background
Conventional polyurethane materials are obtained by reacting polyisocyanate monomers with polyols. However, the polyisocyanate has high toxicity and high volatility, is very toxic and harmful to human body and environment, and has higher toxicity and harm to phosgene as a synthetic raw material of the polyisocyanate. With the environmental protection requirement and the technical development, the non-isocyanate polychloroethyl (NIPU) becomes a novel environmental-friendly polychloroethyl material, which has wide application prospect.
Typically, the non-isocyanate polyurethane is prepared by reacting a polycyclocarbonate oligomer with a polyamine. However, the production process of the polycyclic carbonic ester oligomer serving as a key raw material is complex, the conversion rate is low, the price is high, the cost of the prepared non-isocyanate polyurethane is high, the performance is unsatisfactory, the terminal application market of the non-isocyanate polyurethane is narrow, and the development progress of the non-isocyanate polyurethane is greatly restricted.
The anticorrosive paint is widely applied to the fields of buildings, railways, bridges, petroleum, chemical industry, metallurgy and the like, about 30% of steel is scrapped due to corrosion each year, and the development of high-quality anticorrosive paint is an urgent task for the research and development of new material technology. At present, the anticorrosive paint is limited by the chemical properties of the traditional resin, and the application problems of lower corrosion resistance, shorter service life, poorer adhesion of a base material and the like are faced, so that the application and development of the anticorrosive paint are greatly restricted, and therefore, the development of the anticorrosive paint with excellent corrosion resistance, long service life and high adhesion of the base material is an urgent problem to be solved in the field of the anticorrosive paint.
Therefore, there is an urgent need in the art of non-isocyanate polyurethane and anticorrosive coatings to develop a new synthetic method of non-isocyanate and a preparation method of anticorrosive coating.
Disclosure of Invention
Starting from the problems set forth above, the present invention aims to provide a silane-terminated polyether containing urethane groups, a preparation method thereof, a one-component non-isocyanate polychlorinated anticorrosive paint containing the silane-terminated polyether containing urethane groups, and a preparation method thereof, so as to solve the defects in the prior art. In order to solve the problems, the invention firstly provides the silane end-capped polyether containing the carbamate groups, which has low production cost and high end capping rate, and solves the problems of complex production process, lower conversion rate and high price of the multi-ring carbonate oligomer, and the prepared non-isocyanate polychloride has higher cost and unsatisfactory performance. In addition, the single-component non-isocyanate polyurethane anticorrosive paint prepared by taking the synthesized silane end-capped polyether containing the urethane groups as a key raw material has good anticorrosive performance (such as acid resistance, salt water resistance, salt fog resistance, artificial aging resistance and the like) and substrate adhesive force, and solves the application problems of low corrosion resistance, short service life, poor substrate adhesive force and the like of the conventional anticorrosive paint.
The present inventors have conducted intensive studies to complete the present invention.
According to an aspect of the present invention, there is provided a silane-terminated polyether having a structure represented by the following general formula (1):
Wherein R 1 is a divalent residue obtained after removal of two hydroxyl groups from a polyether polyol selected from one or more of a polypropylene oxide polyol having a hydroxyl functionality of 2 or 3 and a number average molecular weight of 100 to 3000 and a polytetrahydrofuran polyol.
According to certain preferred embodiments of the present invention, the polyether polyol has a hydroxyl functionality of 2.
According to certain preferred embodiments of the present invention, the polyether polyol has a number average molecular weight in the range of 200 to 2000.
According to certain preferred embodiments of the present invention, the polyether polyol is selected from one or more of polypropylene oxide diol and polytetrahydrofuran diol having a number average molecular weight in the range of 200 to 2000.
According to another aspect of the present invention, there is provided a process for preparing a silane-terminated polyether, the process comprising the steps of:
(1) Mixing alkali containing alkali metal and organic ammonium hydroxide ionic liquid under the protection of nitrogen, stirring and heating to react to obtain an alkali metal/ionic liquid composite catalyst;
(2) Mixing and heating phenyl carbonate terminated polyether, 3-aminopropyl triethoxysilane and the alkali metal/ionic liquid composite catalyst obtained in the step (1) to react, and distilling under reduced pressure to remove phenol to obtain the silane terminated polyether, wherein:
the phenyl carbonate terminated polyether has a structure represented by the following general formula (2):
Wherein R 1 is a divalent residue obtained after removal of two hydroxyl groups from a polyether polyol selected from one or more of a polypropylene oxide polyol having a hydroxyl functionality of 2 or 3 and a number average molecular weight of 100 to 3000 and a polytetrahydrofuran polyol.
According to certain preferred embodiments of the present invention, the polyether polyol has a hydroxyl functionality of 2.
According to certain preferred embodiments of the present invention, the polyether polyol has a number average molecular weight in the range of 200 to 2000.
According to certain preferred embodiments of the present invention, the polyether polyol is selected from one or more of polypropylene oxide diol and polytetrahydrofuran diol having a number average molecular weight in the range of 200 to 2000.
According to certain preferred embodiments of the present invention, the alkali metal containing base is selected from one or more of potassium carbonate, potassium acetate, potassium hydroxide, sodium methoxide, sodium tert-butoxide, lithium tert-butoxide and sodium ethoxide.
According to certain preferred embodiments of the present invention, the organic ammonium hydroxide ionic liquid is selected from one or more of an aqueous tetramethyl ammonium hydroxide solution, an aqueous tetraethyl ammonium hydroxide solution, and an aqueous tetrabutyl ammonium hydroxide solution.
According to certain preferred embodiments of the present invention, in step (1), the weight ratio of alkali metal-containing base to organic ammonium hydroxide ionic liquid is in the range of 1:1 to 1:2.
According to certain preferred embodiments of the present invention, in step (2), the molar ratio of the 3-aminopropyl triethoxysilane to the phenyl carbonate terminated polyether is 2:1.
According to certain preferred embodiments of the present invention, in step (2), the ratio of the weight of the alkali metal/ionic liquid composite catalyst to the sum of the weights of the phenyl-terminated carbonate polyether and 3-aminopropyl triethoxysilane is in the range of 1X 10 -5:1 to 1X 10 -3:1.
According to yet another aspect of the present invention, there is provided a one-component polyurethane anticorrosive paint comprising: 50-80 parts of the silane-terminated polyether, 10-30 parts of rutile titanium dioxide, 5-15 parts of graphene, 2-10 parts of polyamide, 0.5-1.5 parts of dispersing agent, 0.005-0.01 part of curing catalyst, 0.5-0.8 part of defoamer, 0.1-0.3 part of flatting agent, 1-4 parts of chemical water scavenger, 0.3-0.6 part of ultraviolet absorber and 2-20 parts of solvent.
According to certain preferred embodiments of the present invention, in the one-component polyurethane anticorrosive coating described above:
The polyamide is a bio-based polyamide; and/or
The dispersing agent is an anionic wetting dispersing agent; and/or
The curing catalyst is a chelate tin catalyst; and/or
The defoaming agent is polyolefin solution type defoaming agent; and/or
The leveling agent is one or more of an organosilicon leveling agent and a modified acrylic leveling agent; and/or
The chemical water scavenger is vinyl silane chemical water scavenger; and/or
The ultraviolet absorbent is one or more of benzophenone ultraviolet absorbent, salicylate ultraviolet absorbent, benzotriazole ultraviolet absorbent, substituted acrylonitrile ultraviolet absorbent and triazine ultraviolet absorbent; and/or
The solvent is selected from one or more of butyl acetate, diethyl carbonate, propylene glycol methyl ether acetate and xylene.
According to still another aspect of the present invention, there is provided a method for preparing a one-component polyurethane anticorrosive paint, the method comprising the steps of:
(1) Drying rutile type titanium dioxide;
(2) Adding 10-30 parts by weight of the rutile titanium dioxide dried in the step (1), 5-15 parts by weight of graphene, 2-10 parts by weight of polyamide, 0.5-1.5 parts by weight of dispersing agent and 2-20 parts by weight of solvent into the silane-terminated polyether, and then dispersing at a high speed; and then 0.5 to 0.8 weight part of defoamer, 0.1 to 0.3 weight part of flatting agent, 0.3 to 0.6 weight part of ultraviolet absorber, 1 to 4 weight parts of chemical water scavenger and 0.005 to 0.01 weight part of curing catalyst are sequentially added, and the single-component non-isocyanate polyurethane anticorrosive paint is obtained after uniform dispersion.
According to certain preferred embodiments of the present invention, in the above-described method of preparing a one-component polyurethane anticorrosive coating:
The polyamide is a bio-based polyamide; and/or
The dispersing agent is an anionic wetting dispersing agent; and/or
The curing catalyst is a chelate tin catalyst; and/or
The defoaming agent is polyolefin solution type defoaming agent; and/or
The leveling agent is one or more of an organosilicon leveling agent and a modified acrylic leveling agent; and/or
The chemical water scavenger is vinyl silane chemical water scavenger; and/or
The ultraviolet absorbent is one or more of benzophenone ultraviolet absorbent, salicylate ultraviolet absorbent, benzotriazole ultraviolet absorbent, substituted acrylonitrile ultraviolet absorbent and triazine ultraviolet absorbent; and/or
The solvent is selected from one or more of butyl acetate, diethyl carbonate, propylene glycol methyl ether acetate and xylene.
Compared with the prior art in the field, the invention has the advantages that:
1) The reaction rate of synthesizing the silane-terminated polyether containing the carbamate group is high;
2) The synthesis of the silane-terminated polyether containing urethane groups according to the invention requires a short time;
3) The single-component anticorrosive paint does not need polyisocyanate to participate in curing, and has better use safety and environmental friendliness;
4) The coating film formed by the single-component anticorrosive paint has excellent anticorrosive performance, artificial aging resistance and substrate adhesion.
Detailed Description
The present invention will be described in further detail with reference to the following specific embodiments. It will be appreciated that other embodiments are contemplated and may be made without departing from the scope or spirit of the invention. The following detailed description is, therefore, not to be taken in a limiting sense.
All numbers expressing feature sizes, amounts, and physical and chemical characteristics used in the specification and claims are to be understood as being modified in all instances by the term "about" unless otherwise indicated. Accordingly, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can be varied appropriately by those skilled in the art utilizing the desired properties sought to be obtained by the teachings disclosed herein. The use of numerical ranges by endpoints includes all numbers subsumed within that range and any range within that range, e.g., 1 to 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4, 5, and the like.
As mentioned above, there is a strong need in the art to develop a new urethane-group-containing silane-terminated polyether one-component non-isocyanate polyurethane anticorrosive paint and a method for preparing the same.
According to an aspect of the present invention, there is provided a silane-terminated polyether having a structure represented by the following general formula (1):
Wherein R 1 is a divalent residue obtained after removal of two hydroxyl groups from a polyether polyol selected from one or more of a polypropylene oxide polyol having a hydroxyl functionality of 2 or 3 and a number average molecular weight of 100 to 3000 and a polytetrahydrofuran polyol.
Preferably, the polyether polyol has a hydroxyl functionality of 2. That is, the polyether polyol is a linear polyether diol each of which is terminated at both ends with hydroxyl groups. The inventors of the present invention have found in the study that the use of a linear polyether diol each of which is terminated at both ends with hydroxyl groups can significantly improve the corrosion resistance (e.g., acid resistance, salt water resistance, salt fog resistance, artificial aging resistance, etc.) and substrate adhesion of a coating film formed from the non-isocyanate polychloroethyl anticorrosive paint, relative to the use of a branched structure type polyether polyol.
Preferably, the polyether polyol has a number average molecular weight in the range of 200 to 2000.
The inventors of the present invention have found that the specific choice of R 1 in the silane-terminated polyether has an important influence on the substrate adhesion and the corrosion protection properties of the corrosion protection coatings obtained using said silane-terminated polyether as film forming material. By controlling the number average molecular weight of the polyether polyol within the range of 200 to 2000 and optimizing the types of other components in the anticorrosive paint and the content thereof, the resulting anticorrosive paint can achieve excellent properties in terms of both substrate adhesion and anticorrosive properties (e.g., acid resistance, salt water resistance, salt mist resistance, artificial aging resistance, etc.). In particular, when the number average molecular weight of the polyether polyol is further controlled in the range of 900 to 2000, the overall properties of the resulting anticorrosive coating, which relate to the adhesion to the substrate and the anticorrosive properties, are greatly improved, even far superior to the performance standards judged as "excellent" in the industry.
Preferably, the polyether polyol is selected from one or more of polypropylene oxide diol and polytetrahydrofuran diol having a number average molecular weight in the range of 200 to 2000. By using polypropylene oxide glycols and polytetrahydrofuran glycols having a number average molecular weight in the range of 200 to 2000, the combination of properties of the anticorrosive coating with respect to substrate adhesion and anticorrosive properties can be greatly optimized compared to polyethylene oxide glycols and polypentamethylene ether glycols having similar number average molecular weights.
Furthermore, both ends of the molecules of the silane-terminated polyether according to the present invention are terminated with 3-aminopropyl triethoxysilane to optimize the combination of properties of the anticorrosive coating, related to substrate adhesion and anticorrosive properties. The inventors of the present invention found that the combination of properties of the anticorrosive coating, concerning substrate adhesion and anticorrosive properties, is significantly reduced when only a single end is taken to be terminated with 3-aminopropyl triethoxysilane.
According to another aspect of the present invention, there is provided a process for preparing a silane-terminated polyether, the process comprising the steps of:
(1) Mixing alkali containing alkali metal and organic ammonium hydroxide ionic liquid under the protection of nitrogen, stirring and heating to react to obtain an alkali metal/ionic liquid composite catalyst;
(2) Mixing and heating phenyl carbonate terminated polyether, 3-aminopropyl triethoxysilane and the alkali metal/ionic liquid composite catalyst obtained in the step (1) to react, and distilling under reduced pressure to remove phenol to obtain the silane terminated polyether, wherein:
the phenyl carbonate terminated polyether has a structure represented by the following general formula (2):
Wherein R1 is a divalent residue obtained after removal of two hydroxyl groups from a polyether polyol selected from one or more of a polypropylene oxide polyol having a hydroxyl functionality of 2 or 3 and a number average molecular weight of 100 to 3000 and a polytetrahydrofuran polyol.
According to the technical scheme, the reaction of the phenyl carbonate terminated polyether and the 3-aminopropyl triethoxysilane is catalyzed by a specific alkali metal/ionic liquid composite catalyst for the first time. When the ionic liquid is used as a cocatalyst of strong alkali organic alkali metal, the ionic liquid can help the main catalyst to increase the activation center, improve the catalytic activity and selectivity and improve the reaction rate. On the other hand, the organic ammonium hydroxide ionic liquid has good compatibility with alkali metal-containing alkali and reactants, so that the reaction is carried out in a homogeneous system.
Preferably, the polyether polyol has a hydroxyl functionality of 2. That is, the polyether polyol is a linear polyether diol each of which is terminated at both ends with hydroxyl groups. The inventors of the present invention have found in the study that the use of a linear polyether diol each of which is terminated at both ends with hydroxyl groups can significantly improve the corrosion resistance (e.g., acid resistance, salt water resistance, salt fog resistance, artificial aging resistance, etc.) and substrate adhesion of a coating film formed from the non-isocyanate polychloroethyl anticorrosive paint, relative to the use of a branched structure type polyether polyol.
Preferably, the polyether polyol has a number average molecular weight in the range of 200 to 2000. Preferably, the polyether polyol is selected from one or more of polypropylene oxide diol and polytetrahydrofuran diol having a number average molecular weight in the range of 200 to 2000.
The phenyl carbonate terminated polyethers which may be employed in the present invention are commercially available or synthetically derived. Commercially available products of the phenyl carbonate terminated polyether include the berliner series products sold by Shanxi province construction science groups, inc., for example, the phenyl carbonate-based polytetrahydrofuran ether berliner DP series products and the phenyl carbonate-based polypropylene oxide ether berliner DB series products having a functionality of 2 and a number average molecular weight of 490, 890, 1240 or 2240.
Preferably, the alkali metal containing base is selected from one or more of potassium carbonate, potassium acetate, potassium hydroxide, sodium methoxide, sodium tert-butoxide, lithium tert-butoxide and sodium ethoxide.
Preferably, the organic ammonium hydroxide ionic liquid is selected from one or more of an aqueous tetramethyl ammonium hydroxide solution, an aqueous tetraethyl ammonium hydroxide solution, and an aqueous tetrabutyl ammonium hydroxide solution.
According to the technical scheme of the invention, in the step (1) in the preparation method of the silane end-capped polyether containing the carbamate group, the weight ratio of the alkali containing alkali metal to the organic ammonium hydroxide ionic liquid is in the range of 1:1 to 1:2.
According to the technical scheme of the invention, in the step (2) in the preparation method of the silane end-capped polyether containing the carbamate groups, the molar ratio of the 3-aminopropyl triethoxysilane to the phenyl end-carbonate polyether is 2:1. If the molar ratio of 3-aminopropyl triethoxysilane to the benzoate-terminated polyether is less than 2:1, it will not be guaranteed that both ends of the benzoate-terminated polyether are completely capped with silane; if the molar ratio of 3-aminopropyl triethoxysilane to the end benzoate polyether is greater than 2:1, the reaction efficiency of step (2) is greatly reduced due to the presence of excessive 3-aminopropyl triethoxysilane in the reaction system, and the product performance is affected by excessive 3-aminopropyl triethoxysilane.
According to the solution of the present invention, preferably, the ratio of the weight of the alkali metal/ionic liquid composite catalyst to the sum of the weights of the phenyl carbonate terminated polyether and 3-aminopropyl triethoxysilane is in the range of 1X 10 -5:1 to 1X 10 -3:1, preferably in the range of 1X 10 -4:1 to 1X 10 -3:1, more preferably in the range of 1X 10 -4:1 to 5X 10 -3:1.
Preferably, in step (2), after the phenyl carbonate terminated polyether is mixed with 3-aminopropyl triethoxysilane and heated to perform a reaction, distillation under reduced pressure is performed to remove byproducts.
According to yet another aspect of the present invention, there is provided a one-part polychloroethyl ester anti-corrosive paint comprising: 50-80 parts by weight of the silane-terminated polyether according to any one of claims 1-4, 10-30 parts by weight of rutile titanium dioxide, 5-15 parts by weight of graphene, 2-10 parts by weight of polyamide, 0.5-1.5 parts by weight of dispersant, 0.005-0.01 part by weight of curing catalyst, 0.5-0.8 part by weight of defoamer, 0.1-0.3 part by weight of leveling agent, 1-4 parts by weight of chemical water scavenger, 0.3-0.6 part by weight of ultraviolet absorber and 2-20 parts by weight of solvent.
According to still another aspect of the present invention, there is provided a method for preparing a one-component polyurethane anticorrosive paint, the method comprising the steps of:
(1) Drying rutile type titanium dioxide;
(2) Adding 10-30 parts by weight of the rutile titanium dioxide dried in the step (1), 5-15 parts by weight of graphene, 2-10 parts by weight of polyamide, 0.5-1.5 parts by weight of dispersant and 2-20 parts by weight of solvent to the silane-terminated polyether according to any one of claims 1-4, and then dispersing at a high speed; and then 0.5 to 0.8 weight part of defoamer, 0.1 to 0.3 weight part of flatting agent, 0.3 to 0.6 weight part of ultraviolet absorber, 1 to 4 weight parts of chemical water scavenger and 0.005 to 0.01 weight part of curing catalyst are sequentially added, and the single-component non-isocyanate polyurethane anticorrosive paint is obtained after uniform dispersion.
Specifically, the preparation method of the urethane-group-containing silane-terminated polyether according to the present invention comprises the following steps:
(1) Mixing and stirring alkali containing alkali metal and organic ammonium hydroxide ionic liquid, and slowly heating to 50-60 ℃ under the protection of nitrogen to react for 1h to obtain a strong alkali metal/ionic liquid composite catalyst;
(2) Mixing and heating phenyl carbonate polyether, 3-aminopropyl triethoxysilane and the alkali metal/ionic liquid composite catalyst obtained in the step (1) to 60-120 ℃ for 2-5h; after the reaction is finished, the reaction byproducts are distilled off under reduced pressure at the temperature of 150-160 ℃ and the pressure of-0.085-0.095 MPa, so as to obtain the silane-terminated polyether containing the urethane groups.
According to still another aspect of the present invention, there is provided a method for preparing a one-component non-isocyanate polychloroethyl anticorrosive paint, the method comprising:
(1) Drying rutile titanium dioxide in an oven;
(2) Adding the dried rutile type titanium dioxide, graphene, polyamide, a dispersing agent and a solvent into silane end capped polyether containing carbamate groups, and dispersing at a high speed; and then sequentially adding a defoaming agent, a leveling agent, an ultraviolet absorber, a chemical water removing agent and a catalyst, and uniformly dispersing to obtain the single-component non-isocyanate polychlorinated ester anticorrosive paint.
According to certain embodiments of the present invention, the one-part non-isocyanate polychloroethyl anticorrosive coating comprises 50 to 80 parts by weight of the urethane-group-containing silane-terminated polyether, 10 to 30 parts by weight of the rutile titanium pigment, 5 to 15 parts by weight of the graphene, 2 to 10 parts by weight of the polyamide, 0.5 to 1.5 parts by weight of the dispersant, 0.005 to 0.01 part by weight of the catalyst, 0.5 to 0.8 part by weight of the antifoaming agent, 0.1 to 0.3 part by weight of the leveling agent, 1 to 4 parts by weight of the chemical water scavenger, 0.3 to 0.6 part by weight of the ultraviolet absorber, and 2 to 20 parts by weight of the solvent.
The silane-terminated polyether prepared by the method is used for preparing a one-component non-isocyanate polyurethane anticorrosive paint. Preferably, in order to obtain a one-component anticorrosive coating having good substrate adhesion properties as well as anticorrosive properties, R 1 is a divalent residue obtained after removal of two hydroxyl groups from a polyether polyol selected from the group consisting of a functionality of 2 and having a number average molecular weight in the range of 900 to 2000.
According to certain embodiments of the present invention, the titanium dioxide is a rutile titanium dioxide, such as one or more of the rutile titanium dioxide R902 and R105 available from DuPont, U.S. Inc. The catalyst is a chelated tin catalyst, such as WCAT-NS01 of Guangzhou excellent wetting chemical industry. The polyamide is bio-based polyamide with a particle size of 200-800 meshes, such as E-1273 and E-2260 produced by Shanghai Kaiser organism. The leveling agent is one or more of organosilicon leveling agent and modified acrylic leveling agent, such as RHEOBYK and RHEOBYK 411 available from Pick Germany. The defoaming agent is a polyolefin solution type defoaming agent, and for example, one or more of BYK-1790 and BYK-1799 provided by Pick Germany can be used. The dispersant is an anionic wetting dispersant, for example, one or more of RHEOBYK and RHEOBYK supplied by Pick, germany. The ultraviolet absorbent is one or more of benzophenone ultraviolet absorbent, salicylate ultraviolet absorbent, benzotriazole ultraviolet absorbent, substituted acrylonitrile ultraviolet absorbent and triazine ultraviolet absorbent, such as RIASORB UV-326, RIASORB UV-928 and RIASORB UV-360 manufactured by Tianjin An Long company. The chemical water scavenger is a vinyl silane chemical water scavenger, such as A171 of Nanjing Orthodaceae chemical industry production. The solvent is selected from one or more of butyl acetate, diethyl carbonate, propylene glycol methyl ether acetate and xylene.
The present invention will be described in more detail with reference to examples. It should be noted that the description and examples are intended to facilitate an understanding of the invention and are not intended to limit the invention. The scope of the invention is defined by the appended claims.
Examples
In the present invention, unless otherwise indicated, the reagents employed were all commercially available products and were used directly without further purification treatment. Further, "%" is referred to as "% by weight", and "parts" is referred to as "parts by weight".
Test method
In the following examples, the physical properties and corrosion resistance of each of the anticorrosive coatings obtained in each example were measured and the measurement results are shown in table 1. The specific measurement method is as follows:
Substrate adhesion test
The test was carried out according to the relevant test method in GB/T5210-2006 adhesion test of paint and varnish pull-off method. If the adhesive force is greater than or equal to 4MPa, the general industrial application requirements of the steel structure anti-corrosion coating material for the building are met; if the adhesive force is greater than or equal to 7MPa, the adhesive force performance of the steel structure anti-corrosion coating material for the building is considered to be excellent.
Acid resistance
The test was carried out according to the test method described in GB/T9274-1988 determination of liquid Medium resistance of paints and varnishes. If the acid resistance is greater than or equal to 96 hours, the general industrial application requirements of the steel structure anti-corrosion coating material for the building are met; if the acid resistance is greater than or equal to 168 hours, the steel structure anticorrosive paint for the building is considered to be excellent in acid resistance.
Alkali resistance
The test was carried out according to the test method described in GB/T9274-1988 determination of liquid Medium resistance of paints and varnishes. If the alkali resistance is greater than or equal to 96 hours, the general industrial application requirements of the steel structure anti-corrosion coating material for the building are met; if the alkali resistance is greater than or equal to 168 hours, the steel structure anticorrosive paint for the building is considered to have excellent alkali resistance.
Salt water resistance
The test was carried out according to the test method described in GB/T9274-1988 determination of liquid Medium resistance of paints and varnishes. If the salt-tolerant water is more than or equal to 120 hours, the general industrial application requirements of the steel structure anti-corrosion coating material for the building are met; if the salt water resistance is greater than or equal to 240h, the steel structure anticorrosive paint for the building is considered to be excellent in salt water resistance.
Salt spray resistance
The test was carried out according to the relevant test method in GB/T1771-2007 determination of neutral salt spray resistance of paints and varnishes. If the salt spray resistance is greater than or equal to 500h, the general industrial application requirements of the steel structure anti-corrosion coating material for the building are met; if the salt spray resistance is greater than or equal to 1000 hours, the steel structure anticorrosive paint for the building is considered to be excellent in salt spray resistance.
Resistance to artificial aging
The test was carried out according to the relevant test method in GB/T1865-2009 "Artificial weathering and Artificial radiation Exposure of paints and varnishes". If the artificial aging resistance is more than or equal to 500 hours, the general industrial application requirements of the steel structure anti-corrosion coating material for the building are met; if the artificial aging resistance is greater than or equal to 1000 hours, the steel structure anticorrosive paint for the building is considered to have excellent artificial aging resistance.
Example 1
Into a four-neck flask equipped with a stirring rod, a thermometer, a nitrogen inlet and a gas escape pipe, 5g of sodium methoxide (Shanghai Aba Ding Gongsi) and 5g of tetrabutylammonium hydroxide aqueous solution (Shanghai Aba Ding Gongsi) are added, nitrogen is introduced, and the mixture is heated to 50 ℃ for reaction for 1h, so as to obtain the sodium methoxide/tetrabutylammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst.
Into a three-neck flask equipped with a stirring rod, a thermometer and a collecting device, 100 g of phenyl carbonate-based polytetrahydrofuran ether ploidy DP-1000 (with a number average molecular weight of 1240 and a functionality of 2, manufactured by Shanxi province building science group Co., ltd., wherein the number average molecular weight of the polyether polyol corresponding to R 1 is 996), 35.7 g of 3-aminopropyl triethoxysilane (manufactured by Shanghai Ala butyl Co.), and 0.035 g of sodium methoxide/tetrabutylammonium hydroxide alkali type organic alkali metal/ionic liquid composite catalyst were added, and the mixture was uniformly mixed and reacted at 75 ℃ for 2 hours under normal pressure; after the reaction is finished, slowly heating to 150 ℃ under the pressure of-0.095 MPa, and distilling under reduced pressure to remove phenol generated by the reaction, thus obtaining the silane end capped polyether containing urethane groups.
48G of rutile titanium dioxide (rutile titanium dioxide R902 from DuPont, U.S.) was dried in an oven at 105℃for 24 hours. Adding the dried rutile type titanium dioxide, 17 g of graphene, 9.5 g of bio-based polyamide (E-1273), 1.2 g of dispersing agent (RHEOBYK-110) and 10 g of butyl acetate into silane end-capped polyether containing carbamate groups, and dispersing at a high speed of 2000r/min for 1h; then 0.1 g of defoamer (BYK-1790), 0.1 g of flatting agent (RHEOBYK-410), 0.2 g of ultraviolet absorber (RIASORB UV-360), 1.5 g of chemical water scavenger (A171) and 0.05 g of catalyst (WCAT-NS 01) are sequentially added, and the single-component non-isocyanate polychlorinated ester anticorrosive paint is obtained after uniform dispersion.
Example 2
Into a four-neck flask equipped with a stirring rod, a thermometer, a nitrogen inlet and a gas escape pipe, 3g of lithium tert-butoxide (Shanghai Aba Ding Gongsi) and 6g of tetramethyl ammonium hydroxide aqueous solution (Shanghai Aba Ding Gongsi) are added, nitrogen is introduced, and the mixture is heated to 55 ℃ for reaction for 1h, so as to obtain the lithium tert-butoxide/tetramethyl ammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst.
Adding 280 g of phenyl carbonate-based polypropylene oxide ether ploidy DB-2000 (with a number average molecular weight of 2240 and a functionality of 2, manufactured by Shanxi province building science group Co., ltd., wherein the number average molecular weight of polyether polyol corresponding to R 1 is 1966), 55.34 g of 3-aminopropyl triethoxysilane (manufactured by Shanghai Allatin Co.) and 0.015 g of lithium tert-butoxide/tetramethyl ammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst into a three-neck flask provided with a stirring rod, a thermometer and a collecting device, uniformly mixing and reacting for 2 hours at 65 ℃ under normal pressure; after the reaction is finished, slowly heating to 160 ℃ under the pressure of-0.095 MPa, and distilling under reduced pressure to remove phenol generated by the reaction, thus obtaining the silane end capped polyether containing urethane groups.
37 G of rutile titanium dioxide (R105, produced by DuPont) was dried in an oven at 108℃for 48 hours. Adding the dried rutile type titanium dioxide, 35 g of graphene, 7.2 g of bio-based polyamide (E-2260), 1.4 g of dispersing agent (RHEOBYK-111) and 55 g of diethyl carbonate into silane end-capped polyether containing carbamate groups, and dispersing at a high speed of 1800r/min for 1.5h; then 0.1 g of defoamer (BYK-1799), 0.15 g of flatting agent (RHEOBYK-411), 2 g of ultraviolet absorber (RIASORB UV-928), 6.6 g of chemical water scavenger (A171) and 1.8 g of catalyst (WCAT-NS 01) are added in sequence, and the single-component non-isocyanate polyurethane anticorrosive paint is obtained after uniform dispersion.
Example 3
Into a four-neck flask equipped with a stirring rod, a thermometer, a nitrogen inlet and a gas escape pipe, 3g of lithium tert-butoxide (Shanghai Aba Ding Gongsi) and 4.5g of tetramethyl ammonium hydroxide aqueous solution (Shanghai Aba Ding Gongsi) are added, nitrogen is introduced, and the mixture is heated to 60 ℃ to react for 1h, so as to obtain the lithium tert-butoxide/tetramethyl ammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst.
Into a three-neck flask equipped with a stirring rod, a thermometer and a collecting device, 562 g of phenyl carbonate-based polytetrahydrofuran ether ploidy DP-650 (number average molecular weight: 890, functionality: 2, produced by Shanxi province building science institute group Co., ltd., wherein the number average molecular weight of the polyether polyol corresponding to R 1: 616), 279.57 g of 3-aminopropyl triethoxysilane (produced by Shanghai Alding Co.), and 0.08 g of a lithium t-butoxide/tetramethyl ammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst were added, and the mixture was uniformly mixed and reacted at 90℃for 1.5 hours under normal pressure; after the reaction is finished, slowly heating to 160 ℃ under the pressure of-0.095 MPa, and distilling under reduced pressure to remove phenol generated by the reaction, thus obtaining the silane end capped polyether containing urethane groups.
37 G of rutile titanium dioxide (rutile titanium dioxide R105 produced by DuPont, U.S.) was dried in an oven at 105℃for 36 hours. Adding dried rutile type titanium dioxide, 35 g of graphene, 7.2 g of bio-based polyamide (E-1273), 1.4 g of dispersing agent (RHEOBYK-110) and 55 g of diethyl carbonate into silane end-capped polyether containing carbamate groups, and dispersing at a high speed of 1800r/min for 1.5h; then 0.1 g of defoamer (BYK-1790), 0.15 g of flatting agent (RHEOBYK-411), 2g of ultraviolet absorber (RIASORB UV-360), 6.6 g of chemical water scavenger (A171) and 1.8 g of catalyst (WCAT-NS 01) are sequentially added, and the single-component non-isocyanate polychlorinated ester anticorrosive paint is obtained after uniform dispersion.
Example 4
Into a four-neck flask equipped with a stirring rod, a thermometer, a nitrogen inlet and a gas escape pipe, 8 g of sodium ethoxide (Shanghai Aba Ding Gongsi) and 8 g of tetramethyl ammonium hydroxide aqueous solution (Shanghai Aba Ding Gongsi) are added, nitrogen is introduced, and the mixture is heated to 50 ℃ for reaction for 1h, so as to obtain the sodium ethoxide/tetramethyl ammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst.
Into a three-neck flask equipped with a stirring rod, a thermometer and a collecting device, 149 g of phenyl carbonate-based polytetrahydrofuran ether ploidy DP-250 (number average molecular weight 490, functionality 2, produced by Shanxi province building science group Co., ltd., wherein the number average molecular weight of the polyether polyol corresponding to R 1 is 216), 134.64 g of 3-aminopropyl triethoxysilane (produced by Shanghai Alding Co.) and 0.0007 g of sodium tert-ethoxide/tetramethyl ammonium hydroxide alkali type organic alkali metal/ionic liquid composite catalyst were added, and the mixture was uniformly mixed and reacted at 80 ℃ for 2 hours under normal pressure; after the reaction is finished, slowly heating to 155 ℃ under the pressure of-0.095 MPa, and distilling under reduced pressure to remove phenol generated by the reaction, thus obtaining the silane end capped polyether containing the carbamate group.
94G of rutile titanium dioxide (rutile titanium dioxide R902 from DuPont, U.S.) was dried in an oven at 105℃for 24 hours. Adding the dried rutile type titanium dioxide, 28 g of graphene, 18.2 g of bio-based polyamide (E-2260), 2 g of dispersing agent (RHEOBYK-110) and 50 g of dimethylbenzene into silane-terminated polyether containing urethane groups, and dispersing at a high speed of 2000r/min for 2 hours; then 0.05 g of defoamer (BYK-1799), 0.15 g of flatting agent (RHEOBYK-410), 2 g of ultraviolet absorber (RIASORB UV-326), 6.6 g of chemical water scavenger (A171) and 1.8 g of catalyst (WCAT-NS 01) are added in sequence, and the single-component non-isocyanate polyurethane anticorrosive paint is obtained after uniform dispersion.
Example 5
Into a four-necked flask equipped with a stirring rod, a thermometer, a nitrogen inlet and a gas escape pipe, 3.6 g of potassium acetate (Shanghai Ala Ding Gongsi) and 5g of tetraethylammonium hydroxide aqueous solution (Shanghai Ala Ding Gongsi) are added, nitrogen is introduced, and the mixture is heated to 55 ℃ to react for 1h, so as to obtain the potassium acetate/tetraethylammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst.
Into a three-neck flask equipped with a stirring rod, a thermometer and a collecting device, 890 g of phenyl carbonate-based polypropylene oxide ether ploidy DB-650 (having a number average molecular weight of 890 and a functionality of 2, manufactured by Shanxi province building science institute group Co., ltd., wherein the number average molecular weight of the polyether polyol corresponding to R 1 is 616), 442.74 g of 3-aminopropyl triethoxysilane (manufactured by Shanghai Ala diner) and 0.135 g of a potassium tert-acetate/tetraethylammonium hydroxide alkali type organic alkali metal/ionic liquid composite catalyst were added, and the mixture was uniformly mixed and reacted at 85 ℃ for 2 hours under normal pressure; after the reaction is finished, slowly heating to 160 ℃ under the pressure of-0.095 MPa, and distilling under reduced pressure to remove phenol generated by the reaction, thus obtaining the silane end capped polyether containing urethane groups.
267 G of rutile titanium dioxide (rutile titanium dioxide R902 produced by DuPont, U.S.) was dried in an oven at 108℃for 48 hours. Adding the dried rutile type titanium dioxide, 85 g of graphene, 55 g of bio-based polyamide (E-1273), 8g of dispersing agent (RHEOBYK-110) and 150 g of propylene glycol methyl ether acetate into silane end-capped polyether containing carbamate groups, and dispersing at a high speed of 2000r/min for 2 hours; then adding 1.8 g of defoamer (BYK-1790), 3.4 g of flatting agent (RHEOBYK-411), 8g of ultraviolet absorber (RIASORB UV-928), 20 g of chemical water scavenger (A171) and 4 g of catalyst (WCAT-NS 01) in turn, and dispersing uniformly to obtain the single-component non-isocyanate polyurethane anticorrosive paint.
Example 6
Into a four-neck flask equipped with a stirring rod, a thermometer, a nitrogen inlet and a gas escape pipe, 3g of sodium tert-butoxide (Shanghai Aba Ding Gongsi) and 4g of tetramethyl ammonium hydroxide aqueous solution (Shanghai Aba Ding Gongsi) are added, nitrogen is introduced, and the mixture is heated to 50 ℃ for reaction for 1h, so as to obtain the sodium tert-butoxide/tetramethyl ammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst.
90 G of phenyl carbonate-based polytetrahydrofuran ether ploidy DP-2000 (with a number average molecular weight of 2240 and a functionality of 2, manufactured by Shanxi institute of construction and sciences group Co., ltd., wherein the number average molecular weight of the polyether polyol corresponding to R 1 is 1966), 17.82 g of 3-aminopropyl triethoxysilane (manufactured by Shanghai Allatin Co.) and 0.006 g of sodium t-butoxide/tetramethyl ammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst are added into a three-neck flask provided with a stirring rod, a thermometer and a collecting device, and the mixture is uniformly mixed and reacted for 1 hour at 70 ℃ under normal pressure; after the reaction is finished, slowly heating to 160 ℃ under the pressure of-0.095 MPa, and distilling under reduced pressure to remove phenol generated by the reaction, thus obtaining the silane end capped polyether containing urethane groups.
20 G of rutile titanium dioxide (rutile titanium dioxide R105 produced by DuPont, U.S.) was dried in an oven at 105℃for 24 hours. Adding the dried rutile type titanium dioxide, 5g of graphene, 4 g of bio-based polyamide (E-2260), 0.5 g of dispersing agent (RHEOBYK-111) and 10 g of butyl acetate into silane end-capped polyether containing urethane groups, and dispersing at a high speed of 2000r/min for 1h; then 0.08 g of defoamer (BYK-1799), 0.15 g of flatting agent (RHEOBYK-411), 0.2 g of ultraviolet absorber (RIASORB UV-928), 2g of chemical water scavenger (A171) and 0.007 g of catalyst (WCAT-NS 01) are added in sequence, and the single-component non-isocyanate polyurethane anticorrosive paint is obtained after uniform dispersion.
Example 7
Into a four-necked flask equipped with a stirring rod, a thermometer, a nitrogen inlet and a gas escape pipe, 2.4 g of sodium tert-butoxide (Shanghai Aba Ding Gongsi) and 3.6 g of tetramethyl ammonium hydroxide aqueous solution (Shanghai Aba Ding Gongsi) are added, nitrogen is introduced, and the mixture is heated to 60 ℃ to react for 1h, so as to obtain the sodium methoxide/tetrabutyl ammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst.
Into a three-neck flask equipped with a stirring rod, a thermometer and a collecting device, 179 g of phenyl carbonate-based polypropylene oxide ether ploidy DB-1000 (with a number average molecular weight of 1240 and a functionality of 2, manufactured by Shanxi province building science institute group Co., ltd., wherein the number average molecular weight of the polyether polyol corresponding to R 1 is 966), 64 g of 3-aminopropyl triethoxysilane (manufactured by Shanghai Alding corporation) and 0.12 g of sodium t-butoxide/tetramethyl ammonium hydroxide alkali type organic alkali metal/ionic liquid composite catalyst are added, and the mixture is uniformly mixed and reacted at 100 ℃ for 1.5 hours under normal pressure; after the reaction is finished, slowly heating to 160 ℃ under the pressure of-0.095 MPa, and distilling under reduced pressure to remove phenol generated by the reaction, thus obtaining the silane end capped polyether containing urethane groups.
45 G of rutile titanium dioxide (rutile titanium dioxide R105 produced by DuPont company of U.S.) is put into a baking oven at 105 ℃ and dried for 24 hours; adding the dried rutile type titanium dioxide, 8 g of graphene, 8.7 g of bio-based polyamide (E-1273), 0.92 g of dispersing agent (RHEOBYK-111) and 14 g of diethyl carbonate into silane end-capped polyether containing carbamate groups, and dispersing for 2 hours at a high speed of 1500r/1 min; then 0.18 g of defoamer (BYK-1799), 0.22 g of flatting agent (RHEOBYK-411), 0.53 g of ultraviolet absorber (RIASORB UV-928), 4.2 g of chemical water scavenger (A171) and 0.017 g of catalyst (WCAT-NS 01) are sequentially added, and the single-component non-isocyanate polyurethane anticorrosive paint is obtained after uniform dispersion.
Example 8
Into a four-necked flask equipped with a stirring rod, a thermometer, a nitrogen inlet and a gas escape pipe, 3.2 g of lithium tert-butoxide (Shanghai Aba Ding Gongsi) and 3.2 g of tetramethyl ammonium hydroxide aqueous solution (Shanghai Aba Ding Gongsi) are added, nitrogen is introduced, and the mixture is heated to 50 ℃ to react for 1 hour, so as to obtain the lithium tert-butoxide/tetramethyl ammonium hydroxide strong alkali type organic alkali metal/ionic liquid composite catalyst.
Into a three-neck flask equipped with a stirring rod, a thermometer and a collecting device, 500 g of phenyl carbonate-based polytetrahydrofuran ether ploidy DP-1000 (with a number average molecular weight of 1240 and a functionality of 2, manufactured by Shanxi province building science group Co., ltd., wherein the number average molecular weight of the polyether polyol corresponding to R 1 is 966), 178.81 g of 3-aminopropyl triethoxysilane (manufactured by Shanghai Alding corporation) and 0.006 g of lithium t-butoxide/tetramethyl ammonium hydroxide alkali type organic alkali metal/ionic liquid composite catalyst are added, and the mixture is uniformly mixed and reacted for 2 hours at 90 ℃ under normal pressure; after the reaction is finished, slowly heating to 160 ℃ under the pressure of-0.095 MPa, and distilling under reduced pressure to remove phenol generated by the reaction, thus obtaining the silane end capped polyether containing urethane groups.
98 G of rutile titanium dioxide (rutile titanium dioxide R105 produced by DuPont company of U.S.) is put into a baking oven at 105 ℃ and dried for 48 hours; adding the dried rutile type titanium dioxide, 14 g of graphene, 19.5 g of bio-based polyamide (E-2260), 2g of dispersing agent (RHEOBYK-111) and 50 g of butyl acetate into silane end-capped polyether containing urethane groups, and dispersing at a high speed of 2000r/min for 2 hours; then 0.62 g of defoamer (BYK-1799), 0.55 g of flatting agent (RHEOBYK-410), 1.3 g of ultraviolet absorber (RIASORB UV-360), 11.8 g of chemical water scavenger (A171) and 0.09 g of catalyst (WCAT-NS 01) are sequentially added, and the single-component non-isocyanate polychlorinated ester anticorrosive paint is obtained after uniform dispersion.
Examples 1-8 above demonstrate that when the non-isocyanate polyurethane anticorrosive coating is applied to a building steel structure, the coating film formed from the non-isocyanate polychloroethyl anticorrosive coating has excellent anticorrosive properties (e.g., acid resistance, alkali resistance, salt water resistance, salt spray resistance, artificial aging resistance, etc.) and substrate adhesion.
The embodiments of the present invention are merely described in terms of preferred embodiments of the present invention, and are not intended to limit the spirit and scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope of the present invention without departing from the design concept of the present invention, and the technical content of the present invention is fully described in the claims.
Claims (17)
1. A silane-terminated polyether having a structure represented by the following general formula (1):
Wherein R 1 is a divalent residue obtained after removal of two hydroxyl groups from a polyether polyol selected from one or more of a polypropylene oxide polyol having a hydroxyl functionality of 2 or 3 and a number average molecular weight of 100 to 3000 and a polytetrahydrofuran polyol.
2. The silane-terminated polyether of claim 1 wherein the polyether polyol has a hydroxyl functionality of 2.
3. The silane-terminated polyether of claim 1 wherein the polyether polyol has a number average molecular weight in the range of 200 to 2000.
4. The silane-terminated polyether of claim 1 wherein the polyether polyol is selected from one or more of polypropylene oxide diol and polytetrahydrofuran diol having a number average molecular weight in the range of 200 to 2000.
5. A process for preparing a silane-terminated polyether, the process comprising the steps of:
(1) Mixing alkali containing alkali metal and organic ammonium hydroxide ionic liquid under the protection of nitrogen, stirring and heating to react to obtain an alkali metal/ionic liquid composite catalyst;
(2) Mixing and heating phenyl carbonate terminated polyether, 3-aminopropyl triethoxysilane and the alkali metal/ionic liquid composite catalyst obtained in the step (1) to react, and distilling under reduced pressure to remove phenol to obtain the silane terminated polyether, wherein:
the phenyl carbonate terminated polyether has a structure represented by the following general formula (2):
Wherein R 1 is a divalent residue obtained after removal of two hydroxyl groups from a polyether polyol selected from one or more of a polypropylene oxide polyol having a hydroxyl functionality of 2 or 3 and a number average molecular weight of 100 to 3000 and a polytetrahydrofuran polyol.
6. The method of making a silane-terminated polyether of claim 5 wherein the polyether polyol has a hydroxyl functionality of 2.
7. The process for preparing a silane-terminated polyether of claim 5 wherein the polyether polyol has a number average molecular weight in the range of 200 to 2000.
8. The process for producing a silane-terminated polyether according to claim 5, wherein the polyether polyol is selected from one or more of polypropylene oxide diol and polytetrahydrofuran diol having a number average molecular weight in the range of 200 to 2000.
9. The process for preparing a silane-terminated polyether of claim 5 wherein the alkali containing alkali is selected from one or more of potassium carbonate, potassium acetate, potassium hydroxide, sodium methoxide, sodium t-butoxide, lithium t-butoxide and sodium ethoxide.
10. The method of making a silane-terminated polyether of claim 5 wherein the organic ammonium hydroxide ionic liquid is selected from one or more of an aqueous tetramethyl ammonium hydroxide solution, an aqueous tetraethyl ammonium hydroxide solution, and an aqueous tetrabutyl ammonium hydroxide solution.
11. The process for preparing a silane-terminated polyether of claim 5 wherein in step (1) the weight ratio of alkali metal-containing base to organic ammonium hydroxide ionic liquid is in the range of 1:1 to 1:2.
12. The process for preparing a silane-terminated polyether of claim 5 wherein in step (2) the molar ratio of the 3-aminopropyl triethoxysilane to the phenyl carbonate terminated polyether is 2:1.
13. The process for producing a silane-terminated polyether according to claim 5, wherein in step (2), the ratio of the weight of the alkali metal/ionic liquid composite catalyst to the sum of the weights of the phenyl carbonate terminated polyether and 3-aminopropyl triethoxysilane is in the range of 1 x 10 -5:1 to 1 x 10 -3:1.
14. A one-component polyurethane anticorrosive coating, the one-component non-isocyanate polyurethane anticorrosive coating comprising: 50-80 parts by weight of the silane-terminated polyether according to any one of claims 1-4, 10-30 parts by weight of rutile titanium dioxide, 5-15 parts by weight of graphene, 2-10 parts by weight of polyamide, 0.5-1.5 parts by weight of dispersant, 0.005-0.01 part by weight of curing catalyst, 0.5-0.8 part by weight of defoamer, 0.1-0.3 part by weight of leveling agent, 1-4 parts by weight of chemical water scavenger, 0.3-0.6 part by weight of ultraviolet absorber and 2-20 parts by weight of solvent.
15. The one-part polyurethane anticorrosive coating of claim 14, wherein:
The polyamide is a bio-based polyamide; and/or
The dispersing agent is an anionic wetting dispersing agent; and/or
The curing catalyst is a chelate tin catalyst; and/or
The defoaming agent is polyolefin solution type defoaming agent; and/or
The leveling agent is one or more of an organosilicon leveling agent and a modified acrylic leveling agent; and/or
The chemical water scavenger is vinyl silane chemical water scavenger; and/or
The ultraviolet absorbent is one or more of benzophenone ultraviolet absorbent, salicylate ultraviolet absorbent, benzotriazole ultraviolet absorbent, substituted acrylonitrile ultraviolet absorbent and triazine ultraviolet absorbent; and/or
The solvent is selected from one or more of butyl acetate, diethyl carbonate, propylene glycol methyl ether acetate and xylene.
16. A preparation method of a one-component polyurethane anticorrosive paint comprises the following steps:
(1) Drying rutile type titanium dioxide;
(2) Adding 10-30 parts by weight of the rutile titanium dioxide dried in the step (1), 5-15 parts by weight of graphene, 2-10 parts by weight of polyamide, 0.5-1.5 parts by weight of dispersant and 2-20 parts by weight of solvent to the silane-terminated polyether according to any one of claims 1-4, and then dispersing at a high speed; and then 0.5 to 0.8 weight part of defoamer, 0.1 to 0.3 weight part of flatting agent, 0.3 to 0.6 weight part of ultraviolet absorber, 1 to 4 weight parts of chemical water scavenger and 0.005 to 0.01 weight part of curing catalyst are sequentially added, and the single-component non-isocyanate polyurethane anticorrosive paint is obtained after uniform dispersion.
17. The method for preparing a one-component polyurethane anticorrosive paint according to claim 16, wherein:
The polyamide is a bio-based polyamide; and/or
The dispersing agent is an anionic wetting dispersing agent; and/or
The curing catalyst is a chelate tin catalyst; and/or
The defoaming agent is polyolefin solution type defoaming agent; and/or
The leveling agent is one or more of an organosilicon leveling agent and a modified acrylic leveling agent; and/or
The chemical water scavenger is vinyl silane chemical water scavenger; and/or
The ultraviolet absorbent is one or more of benzophenone ultraviolet absorbent, salicylate ultraviolet absorbent, benzotriazole ultraviolet absorbent, substituted acrylonitrile ultraviolet absorbent and triazine ultraviolet absorbent; and/or
The solvent is selected from one or more of butyl acetate, diethyl carbonate, propylene glycol methyl ether acetate and xylene.
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| CN117209746A (en) * | 2023-10-15 | 2023-12-12 | 江西蓝星星火有机硅有限公司 | Silane end capped polyether resin and preparation method and application thereof |
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| CN117209746A (en) * | 2023-10-15 | 2023-12-12 | 江西蓝星星火有机硅有限公司 | Silane end capped polyether resin and preparation method and application thereof |
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