CN106867443A - A kind of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant and preparation method thereof - Google Patents
A kind of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant and preparation method thereof, the constituent of sealant is calculated as follows by quality proportioning：Component A：Component B=100:（10~8）, component A include base polymer, plasticizer and filler, component B include dimethicone, crosslinking agent, coupling agent and catalyst；Sealant of the present invention improves the heat-proof water adhesive property to aluminium and glass, not by seasonal effect, constructing operation good stability.
Description
Technical field
The present invention relates to a kind of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant and preparation method thereof, belong to silastic material technical field.
Background technology
The species of organic silicon sealant is a lot, different types of organic silicon sealant in heat resistance, water resistance, insulating properties, optical property, to aspects such as the bonding adhesion properties and soft durometer of unlike material have very big difference.
The main flow kind of sealant of the prior art is the structure sealant with sealing and high, the middle modulus of binding function, for the structural bond sealing of glass, stone material, aluminum facade and design of glass lighting roof and structural metallic engineering, middle control the road adhering and sealing of glass two and otherwise adhering and sealing.But traditional single-component silicon rubber building sealant, the heat-proof water adhesive property to aluminium and glass is bad, constructing operation less stable larger by seasonal effect.
The content of the invention
The purpose of the present invention is directed to the defect of prior art, there is provided a kind of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant and preparation method thereof, improves to aluminium and the heat-proof water adhesive property of glass, not by seasonal effect, constructing operation good stability.
The present invention is achieved by following technology：
A kind of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant, the constituent of the sealant is calculated as follows by quality proportioning：Component A：Component B=100:（10~8）；
The constituent of the component A is as follows according to the mass fraction：
50 ~ 100 parts of base polymer
5 ~ 50 parts of plasticizer
50 ~ 100 parts of filler；
The constituent of the component B is as follows according to the mass fraction：
50 ~ 100 parts of dimethicone
50 ~ 100 parts of crosslinking agent
5 ~ 30 parts of coupling agent
0.001 ~ 5 part of catalyst；
Wherein, the base polymer is α, alpha, omega-dihydroxy polydimethyl siloxane, at least one of α, ω-dimethoxy dimethyl silicone polymer；
The plasticizer is at least one of dimethicone, methyl phenyl silicone oil；
Described filler is at least one of diatomite, calcium carbonate, silica flour；
The crosslinking agent is at least one of tetraethyl orthosilicate, positive silicic acid propyl ester, ethyl polysilicate；
The coupling agent is at least one of γ-(2,3- glycidoxies) propyl trimethoxy siloxanes, gamma-aminopropyl-triethoxy-silane, N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane；
The catalyst is at least one of dibutyl tin dilaurate, dibutyl tin acetate, dibutyl tin dioctoate or tin octoate, isopropyl titanate, tetrabutyl titanate.
A kind of preparation method of above-mentioned dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant, its preparation method is as follows：
(1) under 0 ~ -0.1MPa of vacuum, 2 ~ 2.5h is stirred by 50 ~ 100 parts of base polymers, 5 ~ 50 parts of plasticizer and 50 ~ 100 parts of fillers addition high speed planetary mixers according to the mass fraction, component A is obtained；
（2）According to the mass fraction by 50 ~ 100 parts of dimethicones, 50 ~ 100 parts of crosslinking agents, 5 ~ 30 parts of coupling agents and 0.001 ~ 5 part of catalyst addition high speed planetary mixer, under 0 ~ -0.1MPa of vacuum, 2h is stirred, component B is obtained；
（3）By component A and component B with mass ratio 100:（10~8）It is well mixed.
Beneficial effects of the present invention are：
The present invention adjusts curing rate by adjusting the mass ratio of component A and component B, make sealant cures speed obtained in the present invention fast, while the adhesive property of resistance to water retting is good, improve the heat-proof water adhesive property to aluminium and glass, do not receive seasonal effect, constructing operation good stability.
Specific embodiment
Specific embodiment of the invention is described further below by embodiment.
Embodiment 1
A kind of preparation method of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant, its preparation method is as follows：
(1) according to the mass fraction by 80000 mPa.s
α, 40 parts of alpha, omega-dihydroxy polydimethyl siloxane, 20000 mPa.s α, 60 parts of alpha, omega-dihydroxy polydimethyl siloxane, in 100 25 parts of mPa.s dimethicones, and 80 parts of addition high speed planetary mixers of calcium carbonate, under vacuum -0.05MPa, stirring 2.5h, is obtained component A；
（2）According to the mass fraction by 100 parts of 100 mPa.s dimethicones, 50 parts of tetraethyl orthosilicate, 25 parts of positive silicic acid propyl ester, γ -15 parts of (2,3- glycidoxy) propyl trimethoxy siloxanes, 18 parts of gamma-aminopropyl-triethoxy-silane, 1.5 parts of dibutyl tin dilaurylate is added in high speed planetary mixer, under vacuum -0.05MPa, 2h is stirred, component B is obtained；
（3）By component A and component B with mass ratio 10:1 is well mixed.
Embodiment 2
A kind of preparation method of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant, its preparation method is as follows：
(1) according to the mass fraction by 80000 mPa.s
60 parts of 80 parts of α, alpha, omega-dihydroxy polydimethyl siloxane, 30 parts of methyl phenyl silicone oil and silica flour are added in high speed planetary mixer, under vacuum -0.1MPa, stir 2.5h, and component A is obtained；
（2）According to the mass fraction by 80 parts of dimethicone, 50 parts of positive silicic acid propyl ester, 10 parts of ethyl polysilicate, 0.5 part of addition high speed planetary mixer of 15 parts of gamma-aminopropyl-triethoxy-silane and isopropyl titanate, under vacuum -0.05MPa, stirring 2h, is obtained component B；
（3）By component A and component B with mass ratio 25:2 are well mixed.
Embodiment 3
A kind of preparation method of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant, its preparation method is as follows：
(1) according to the mass fraction by 80000 mPa.s
60 parts of α, alpha, omega-dihydroxy polydimethyl siloxane, 80 parts of 10 parts of dimethicone, 20 parts of methyl phenyl silicone oil and diatomite are added in high speed planetary mixer, under vacuum -0.05MPa, stir 2h, and component A is obtained；
（2）According to the mass fraction by 70 parts of dimethicone, 50 parts of tetraethyl orthosilicate, 25 parts of positive silicic acid propyl ester, 20 parts of N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane, 0.1 part of dibutyl tin acetate are added in high speed planetary mixer, under vacuum -0.06MPa, stirring 2.5h, is obtained component B；
（3）By component A and component B with mass ratio 100:9 are well mixed.
Obtained sealant in above-described embodiment 1-3 is made into H-shaped bonding test specimen, is vulcanized 7 days in 25 DEG C, 50%RH environment, test tensile bond intensity, 7 days are impregnated in 80 DEG C of warm water, tensile strength, test result following table is tested respectively after 14 days：
As seen from the above table, make sealant cures speed obtained in the present invention fast, while the adhesive property of resistance to water retting is good, improve the heat-proof water adhesive property to aluminium and glass, not by seasonal effect, constructing operation good stability.
Here description of the invention and application are illustrative, in being not wishing to limit the scope of the invention to above-described embodiment, therefore, the present invention is not limited by the present embodiment, and the technical scheme of any use equivalence replacement acquirement is in the scope of protection of the invention.
Claims (2)
1. a kind of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant, it is characterized by, the constituent of the sealant is calculated as follows by quality proportioning：Component A：Component B=100:（10~8）；
The constituent of the component A is as follows according to the mass fraction：
50 ~ 100 parts of base polymer
5 ~ 50 parts of plasticizer
50 ~ 100 parts of filler；
The constituent of the component B is as follows according to the mass fraction：
50 ~ 100 parts of dimethicone
50 ~ 100 parts of crosslinking agent
5 ~ 30 parts of coupling agent
0.001 ~ 5 part of catalyst；
Wherein, the base polymer is α, alpha, omega-dihydroxy polydimethyl siloxane, at least one of α, ω-dimethoxy dimethyl silicone polymer；
The plasticizer is at least one of dimethicone, methyl phenyl silicone oil；
Described filler is at least one of diatomite, calcium carbonate, silica flour；
The crosslinking agent is at least one of tetraethyl orthosilicate, positive silicic acid propyl ester, ethyl polysilicate；
The coupling agent is at least one of γ-(2,3- glycidoxies) propyl trimethoxy siloxanes, gamma-aminopropyl-triethoxy-silane, N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane；
The catalyst is at least one of dibutyl tin dilaurate, dibutyl tin acetate, dibutyl tin dioctoate or tin octoate, isopropyl titanate, tetrabutyl titanate.
2. a kind of preparation method of dealcoholysis condensed type double-component room temperature vulcanized silicone rubber building sealant as claimed in claim 1, it is characterized by, its preparation method is as follows：
(1) under 0 ~ -0.1MPa of vacuum, 2 ~ 2.5h is stirred by 50 ~ 100 parts of base polymers, 5 ~ 50 parts of plasticizer and 50 ~ 100 parts of fillers addition high speed planetary mixers according to the mass fraction, component A is obtained；
（2）According to the mass fraction by 50 ~ 100 parts of dimethicones, 50 ~ 100 parts of crosslinking agents, 5 ~ 30 parts of coupling agents and 0.001 ~ 5 part of catalyst addition high speed planetary mixer, under 0 ~ -0.1MPa of vacuum, 2h is stirred, component B is obtained；
（3）By component A and component B with mass ratio 100:（10~8）It is well mixed.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111454687A (en) * | 2020-04-15 | 2020-07-28 | 西安隆基绿能建筑科技有限公司 | Two-component silicone adhesive and production method and application thereof |
| CN114321122A (en) * | 2021-12-03 | 2022-04-12 | 武汉航空仪表有限责任公司 | Forming method of bi-component fireproof flame-retardant organic silicon sealant |
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| CN102408722A (en) * | 2011-10-10 | 2012-04-11 | 北京天山新材料技术股份有限公司 | Novel bi-component dealcoholization type silicon rubber sealant and preparation method thereof |
| CN103642451A (en) * | 2013-12-12 | 2014-03-19 | 苏州天山新材料技术有限公司 | Room-temperature vulcanized one-component dealcoholized silicone rubber sealant and preparation method thereof |
| CN104530715A (en) * | 2014-12-26 | 2015-04-22 | 江苏天辰新材料有限公司 | High temperature-resisting room temperature vulcanized silicone rubber and preparation method thereof |
| CN104531050A (en) * | 2014-12-26 | 2015-04-22 | 江苏天辰新材料有限公司 | Low-modulus high-elongation-percentage room-temperature-vulcanization silicon rubber and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102408722A (en) * | 2011-10-10 | 2012-04-11 | 北京天山新材料技术股份有限公司 | Novel bi-component dealcoholization type silicon rubber sealant and preparation method thereof |
| CN103642451A (en) * | 2013-12-12 | 2014-03-19 | 苏州天山新材料技术有限公司 | Room-temperature vulcanized one-component dealcoholized silicone rubber sealant and preparation method thereof |
| CN104530715A (en) * | 2014-12-26 | 2015-04-22 | 江苏天辰新材料有限公司 | High temperature-resisting room temperature vulcanized silicone rubber and preparation method thereof |
| CN104531050A (en) * | 2014-12-26 | 2015-04-22 | 江苏天辰新材料有限公司 | Low-modulus high-elongation-percentage room-temperature-vulcanization silicon rubber and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111454687A (en) * | 2020-04-15 | 2020-07-28 | 西安隆基绿能建筑科技有限公司 | Two-component silicone adhesive and production method and application thereof |
| CN111454687B (en) * | 2020-04-15 | 2022-06-07 | 隆基乐叶光伏科技有限公司 | Two-component silicone adhesive and production method and application thereof |
| CN114321122A (en) * | 2021-12-03 | 2022-04-12 | 武汉航空仪表有限责任公司 | Forming method of bi-component fireproof flame-retardant organic silicon sealant |
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Application publication date: 20170620 |