CN116948502B - Silane modified polyether waterproof coating and preparation method thereof - Google Patents
Silane modified polyether waterproof coating and preparation method thereof Download PDFInfo
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- CN116948502B CN116948502B CN202311026562.9A CN202311026562A CN116948502B CN 116948502 B CN116948502 B CN 116948502B CN 202311026562 A CN202311026562 A CN 202311026562A CN 116948502 B CN116948502 B CN 116948502B
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- waterproof coating
- antioxidant
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- 239000004526 silane-modified polyether Substances 0.000 title claims abstract description 67
- 238000000576 coating method Methods 0.000 title claims abstract description 47
- 239000011248 coating agent Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- LUEWUZLMQUOBSB-UHFFFAOYSA-N UNPD55895 Natural products OC1C(O)C(O)C(CO)OC1OC1C(CO)OC(OC2C(OC(OC3C(OC(O)C(O)C3O)CO)C(O)C2O)CO)C(O)C1O LUEWUZLMQUOBSB-UHFFFAOYSA-N 0.000 claims abstract description 17
- UYQJCPNSAVWAFU-UHFFFAOYSA-N malto-tetraose Natural products OC1C(O)C(OC(C(O)CO)C(O)C(O)C=O)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(O)C(CO)O2)O)C(CO)O1 UYQJCPNSAVWAFU-UHFFFAOYSA-N 0.000 claims abstract description 17
- LUEWUZLMQUOBSB-OUBHKODOSA-N maltotetraose Chemical compound O[C@H]1[C@H](O)[C@@H](O)[C@H](CO)O[C@H]1O[C@@H]1[C@H](CO)O[C@@H](O[C@@H]2[C@@H](O[C@@H](O[C@@H]3[C@@H](O[C@@H](O)[C@H](O)[C@H]3O)CO)[C@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-OUBHKODOSA-N 0.000 claims abstract description 17
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 17
- MBGQQKKTDDNCSG-UHFFFAOYSA-N ethenyl-diethoxy-methylsilane Chemical compound CCO[Si](C)(C=C)OCC MBGQQKKTDDNCSG-UHFFFAOYSA-N 0.000 claims abstract description 16
- SVYKKECYCPFKGB-UHFFFAOYSA-N N,N-dimethylcyclohexylamine Chemical compound CN(C)C1CCCCC1 SVYKKECYCPFKGB-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 15
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- 239000007822 coupling agent Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 7
- HKZLNGQCWGVZIW-UHFFFAOYSA-N cyclohex-2-en-1-imine Chemical compound N=C1CCCC=C1 HKZLNGQCWGVZIW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 6
- 229910000077 silane Inorganic materials 0.000 claims description 6
- NLSFWPFWEPGCJJ-UHFFFAOYSA-N 2-methylprop-2-enoyloxysilicon Chemical compound CC(=C)C(=O)O[Si] NLSFWPFWEPGCJJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical compound CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000004721 Polyphenylene oxide Substances 0.000 abstract description 7
- 229920000570 polyether Polymers 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 21
- HGCIXCUEYOPUTN-UHFFFAOYSA-N cis-cyclohexene Natural products C1CCC=CC1 HGCIXCUEYOPUTN-UHFFFAOYSA-N 0.000 description 11
- -1 cyclohexene imine Chemical class 0.000 description 11
- 239000003973 paint Substances 0.000 description 10
- 238000001035 drying Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 6
- 238000011161 development Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- RBACIKXCRWGCBB-UHFFFAOYSA-N 1,2-Epoxybutane Chemical compound CCC1CO1 RBACIKXCRWGCBB-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000011414 polymer cement Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
- C09D171/02—Polyalkylene oxides
-
- 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
- C08G65/26—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 from cyclic ethers and other compounds
- C08G65/2603—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 from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2606—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 from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
-
- 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
- C08G65/26—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 from cyclic ethers and other compounds
- C08G65/2603—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 from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2606—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 from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
- C08G65/2609—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 from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups
-
- 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
- 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
- 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
- C09D7/63—Additives non-macromolecular organic
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Paints Or Removers (AREA)
Abstract
本发明涉及防水涂料技术领域，提出了一种硅烷改性聚醚防水涂料及其制备方法，包括以下重量份的组分：硅烷改性聚醚100份、填料10~30份、偶联剂1~3份、二甲基环己胺0.5~1份、环己烯亚胺0.5~1份、抗氧剂1~2份；所述硅烷改性聚醚包括以下重量份的组分：环氧丁烷100份、季戊四醇15~25份、麦芽四糖10~20份、乙烯基甲基二乙氧基硅烷5~15份、催化剂1~3份。通过上述技术方案，解决了现有技术中的聚醚涂料防水性差以及强度低的问题。The present invention relates to the technical field of waterproof coatings, and proposes a silane-modified polyether waterproof coating and a preparation method thereof, comprising the following components in parts by weight: 100 parts of silane-modified polyether, 10-30 parts of filler, 1-3 parts of coupling agent, 0.5-1 part of dimethylcyclohexylamine, 0.5-1 part of cyclohexeneimine, and 1-2 parts of antioxidant; the silane-modified polyether comprises the following components in parts by weight: 100 parts of butylene oxide, 15-25 parts of pentaerythritol, 10-20 parts of maltotetraose, 5-15 parts of vinylmethyldiethoxysilane, and 1-3 parts of catalyst. Through the above technical scheme, the problems of poor waterproofness and low strength of polyether coatings in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of waterproof coatings, in particular to a silane modified polyether waterproof coating and a preparation method thereof.
Background
The waterproof coating is a coating which can form a waterproof film with certain extensibility, elastoplasticity, crack resistance, impermeability and weather resistance after being cured and has the functions of waterproof, seepage prevention and protection. The waterproof paint is used in building roof, basement, kitchen, etc to prevent rain water, underground water, industrial and civil water supply and drainage, and the invasion of moisture, steam, etc. in air into building. In the building waterproof paint which is used in more markets at present, polyurethane waterproof paint, polymer cement waterproof paint, acrylic acid waterproof paint and modified asphalt waterproof paint are mainly used, but most waterproof paint, especially polyurethane and asphalt waterproof paint, contains more harmful components and does not accord with the development trend of building material environmental protection.
The polyether coating has the advantages of low viscosity, low toxicity, safe and reliable use and good processability, accords with the development trend of environmental protection of coating building materials, has wide application prospect, but has the defects of low strength, easy moisture absorption, easy absorption of moisture in air, influence on the performance and service life of the coating, and limits the development of the coating to a certain extent.
Disclosure of Invention
The invention provides a silane modified polyether waterproof coating and a preparation method thereof, which solve the problems of poor waterproof property and low strength of the polyether coating in the related art.
The technical scheme of the invention is as follows:
the invention provides a silane modified polyether waterproof coating which comprises the following components in parts by weight: 100 parts of silane modified polyether, 10-30 parts of filler, 1-3 parts of coupling agent, 0.5-1 part of dimethyl cyclohexylamine, 0.5-1 part of cyclohexene imine and 1-2 parts of antioxidant;
the silane modified polyether comprises the following components in parts by weight: 100 parts of butylene oxide, 15-25 parts of pentaerythritol, 10-20 parts of maltotetraose, 5-15 parts of vinyl methyl diethoxy silane and 1-3 parts of catalyst.
As a further technical scheme, the filler is one or more of talcum powder, quartz powder and kaolin.
As a further technical scheme, the coupling agent is one or more of epoxy silane, methacryloxy silane and methoxy silane.
As a further technical scheme, the antioxidant is one or more of an antioxidant 246, an antioxidant 1010, an antioxidant 168 and an antioxidant 164.
As a further technical scheme, the catalyst is an organic amine catalyst.
As a further technical scheme, the preparation method of the silane modified polyether comprises the following steps:
S1, stirring and premixing butylene oxide, pentaerythritol and maltotetraose in a nitrogen atmosphere, and dehydrating and drying at 120-130 ℃ for 100-120 min to obtain a premix;
S2, cooling the premix to 90-100 ℃, adding a catalyst and vinyl methyl diethoxy silane, stirring and reacting for 60-150 min, cooling to 80-90 ℃ and continuing to react for 60-120 min to obtain silane modified polyether.
The invention also provides a preparation method of the silane modified polyether waterproof paint, which comprises the following steps:
A1, uniformly mixing a filler and an antioxidant, and dehydrating and drying at 120 ℃ under vacuum conditions to obtain a mixture A;
and A2, cooling to 70-80 ℃ under vacuum condition, mixing the silane modified polyether with the mixture A, and then adding the dimethylcyclohexylamine, cyclohexene imine and the coupling agent to stir uniformly to obtain the silane modified polyether waterproof coating.
As a further technical scheme, the mixing time in the A1 is 30-60 min.
As a further technical scheme, the vacuum degree of the A1 and the A2 under the vacuum condition is less than-0.08 Mpa.
As a further technical scheme, the mixing time in the A2 is 40-80 min, and the stirring time is 30-40 min.
The working principle and the beneficial effects of the invention are as follows:
according to the invention, the silane modified polyether is obtained by modifying the vinyl methyl diethoxy silane, and then the synergistic effect of the dimethyl cyclohexylamine and the cyclohexene imine is matched, so that the preparation efficiency is improved, and meanwhile, the silane modified polyether waterproof coating with Si-O-Si bonds as network crosslinking points is finally obtained, and the silane modified polyether waterproof coating has the advantages of excellent waterproof performance and high strength; and pentaerythritol and maltotetraose are compounded when the silane modified polyether is adopted to cooperatively serve as an initiator of epoxy butane, and after the silane modified polyether is subjected to siloxy end capping by matching with vinyl methyl diethoxy silane, the waterproof performance of the silane modified polyether waterproof coating is obviously improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The silane modified polyether waterproof coating comprises the following components in parts by weight: 100 parts of silane modified polyether, 10 parts of kaolin, 1 part of epoxy silane, 0.5 part of dimethyl cyclohexylamine, 0.5 part of cyclohexene imine and 246 1 parts of antioxidant;
the silane modified polyether comprises the following components in parts by weight: 100 parts of butylene oxide, 15 parts of pentaerythritol, 10 parts of maltotetraose, 5 parts of vinyl methyl diethoxy silane and 1 part of tert-butylamine.
The preparation method of the silane modified polyether comprises the following steps:
s1, stirring and premixing butylene oxide, pentaerythritol and maltotetraose in a nitrogen atmosphere, and dehydrating and drying at 120 ℃ for 120min to obtain a premix;
S2, cooling the premix to 90 ℃, adding tert-butylamine and vinyl methyl diethoxy silane, stirring and reacting for 150min, cooling to 80 ℃ and continuing to react for 120min to obtain silane modified polyether.
A preparation method of a silane modified polyether waterproof coating comprises the following steps:
A1, uniformly mixing kaolin and an antioxidant 246 for 30min, and dehydrating and drying under the vacuum condition that the temperature is 120 ℃ and the vacuum degree is-0.09 Mpa to obtain a mixture A;
a2, cooling to 70 ℃ under the vacuum condition that the vacuum degree is-0.09 Mpa, mixing the silane modified polyether resin with the mixture A for 80min, and then adding dimethyl cyclohexylamine, cyclohexene imine and epoxy silane to stir for 40min to obtain the silane modified polyether waterproof coating.
Example 2
The silane modified polyether waterproof coating comprises the following components in parts by weight: 100 parts of silane modified polyether, 20 parts of quartz powder, 2 parts of methoxysilane, 0.75 part of dimethyl cyclohexylamine, 0.75 part of cyclohexene imine and 1.5 parts of antioxidant;
the silane modified polyether comprises the following components in parts by weight: 100 parts of butylene oxide, 20 parts of pentaerythritol, 15 parts of maltotetraose, 10 parts of vinyl methyl diethoxy silane and 2 parts of diethylamine.
The preparation method of the silane modified polyether comprises the following steps:
S1, stirring and premixing butylene oxide, pentaerythritol and maltotetraose in a nitrogen atmosphere, and dehydrating and drying at 125 ℃ for 110min to obtain a premix;
S2, cooling the premix to 95 ℃, adding diethylamine and vinylmethyldiethoxysilane, stirring and reacting for 100min, cooling to 85 ℃ and continuing to react for 90min to obtain silane modified polyether.
A preparation method of a silane modified polyether waterproof coating comprises the following steps:
A1, uniformly mixing quartz powder and an antioxidant 1010 for 45min, and dehydrating and drying under the vacuum condition of 120 ℃ and vacuum degree of-0.10 Mpa to obtain a mixture A;
a2, cooling to 75 ℃ under the vacuum condition that the vacuum degree is-0.10 Mpa, mixing the silane modified polyether resin with the mixture A for 60min, and then adding dimethyl cyclohexylamine, cyclohexene imine and methoxysilane to stir for 35min to obtain the silane modified polyether waterproof coating.
Example 3
The silane modified polyether waterproof coating comprises the following components in parts by weight: 100 parts of silane modified polyether, 30 parts of talcum powder, 3 parts of methacryloxy silane, 1 part of dimethyl cyclohexylamine, 1 part of cyclohexene imine and 168 2 parts of antioxidant;
The silane modified polyether comprises the following components in parts by weight: 100 parts of butylene oxide, 25 parts of pentaerythritol, 20 parts of maltotetraose, 15 parts of vinyl methyl diethoxy silane and 3 parts of hexamethylenediamine.
The preparation method of the silane modified polyether comprises the following steps:
s1, stirring and premixing butylene oxide, pentaerythritol and maltotetraose in a nitrogen atmosphere, and dehydrating and drying at 130 ℃ for 100min to obtain a premix;
S2, cooling the premix to 100 ℃, adding hexamethylenediamine and vinylmethyldiethoxysilane, stirring and reacting for 60min, cooling to 90 ℃ and continuing to react for 60min to obtain silane modified polyether.
A preparation method of a silane modified polyether waterproof coating comprises the following steps:
a1, uniformly mixing talcum powder and antioxidant 168 for 60min, and dehydrating and drying under the vacuum condition of 120 ℃ and vacuum degree of-0.09 Mpa to obtain a mixture A;
A2, cooling to 80 ℃ under the vacuum condition that the vacuum degree is-0.09 Mpa, mixing the silane modified polyether resin with the mixture A for 40min, and then adding dimethyl cyclohexylamine, cyclohexene imine and methacryloxy silane to stir for 30min to obtain the silane modified polyether waterproof coating.
Comparative example 1
This comparative example differs from example 3 only in that only 2 parts of dimethylcyclohexylamine were added and no cyclohexenimine was added.
Comparative example 2
This comparative example differs from example 3 only in that only 2 parts of cyclohexene imine are added, and no dimethylcyclohexylamine is added.
Comparative example 3
This comparative example differs from example 3 only in that 45 parts of pentaerythritol were added and no maltotetraose was added.
Comparative example 4
This comparative example differs from example 3 only in that only 45 parts of maltotetraose were added, and pentaerythritol was not added.
Comparative example 5
This comparative example differs from example 3 only in that the polyether is not silane modified, i.e. the polyether is prepared by the following method:
S1, stirring and premixing 100 parts of epoxybutane, 25 parts of pentaerythritol and 20 parts of maltotetraose in a nitrogen atmosphere, and dehydrating and drying at 130 ℃ for 100min to obtain a premix;
S2, cooling the premix to 100 ℃, adding 3 parts of hexamethylenediamine, stirring and reacting for 60min, cooling to 90 ℃ and continuing to react for 60min to obtain polyether.
Comparative example 6
This comparative example differs from example 3 only in that vinylmethyldiethoxysilane is changed to r-aminopropyl triethoxysilane.
According to the coating film preparation and performance test method in the standard GB/T16777-2008 building waterproof coating test method, the silane modified polyether waterproof coatings of examples 1-3 and comparative examples 1-6 are respectively placed in a sealing mode for 24 hours, then coated in a die to prepare a coating film with the thickness of about 1.5mm, and after standing for 7d under the standard test condition, the tensile property, the tearing strength and the water impermeability of the coating film are tested, and the test results are shown in Table 1.
Table 1 results of performance test of silane-modified polyether waterproof coating
From the data of comparative example 3, comparative example 5 and comparative example 6, it was found that modification with vinylmethyldiethoxysilane gave silane-modified polyethers having higher water repellency and strength; the data of comparative examples 3 and comparative examples 1-2 show that the tensile strength, the tearing strength and the water resistance of the example 3 are all superior to those of the comparative examples 1-2, so that the dimethylcyclohexylamine and the cyclohexene imine have synergistic effect, the preparation efficiency is improved, and the silane modified polyether waterproof paint has the advantages of excellent waterproof performance and high strength; the data of comparative examples 3 and 3-4 show that pentaerythritol and maltotetraose are compounded when silane modified polyether is adopted, the strength and the water resistance of example 3 are better than those of comparative examples 3-4, the fact that pentaerythritol and maltotetraose are matched to obtain polyether with multiple functionalities, and after silane is matched with vinylmethyldiethoxysilane to carry out siloxy end capping, the water resistance and the strength of the silane modified polyether waterproof coating are obviously improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
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