CN104559914B - A kind of Sealant room temperature vulcanization dealcoholysis silicone rubber and preparation method thereof - Google Patents
A kind of Sealant room temperature vulcanization dealcoholysis silicone rubber and preparation method thereof Download PDFInfo
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- CN104559914B CN104559914B CN201510041817.8A CN201510041817A CN104559914B CN 104559914 B CN104559914 B CN 104559914B CN 201510041817 A CN201510041817 A CN 201510041817A CN 104559914 B CN104559914 B CN 104559914B
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Abstract
The invention discloses a kind of Sealant room temperature vulcanization dealcoholysis silicone rubber and preparation method thereof, the silicone rubber of the present invention consists of by weight: α, alpha, omega-dihydroxy polydimethyl siloxane 40-80 part；MS polymer 1-50 part；Calcium carbonate 5-120 part；Cross-linking agent 2-20 part；White carbon 1-20 part；Coupling agent 0.1-5 part；Catalyst 0.01-1 part；The present invention improves Sealant by MS polymer, and by α, alpha, omega-dihydroxy polydimethyl siloxane, MS polymer and calcium carbonate stir in kneader；Add cross-linking agent to be sufficiently stirred for；Add white carbon to be sufficiently stirred for；After addition coupling agent and catalyst are sufficiently stirred for, plastic emitting obtains product.The present invention improves the Sealant performance of silicone rubber.
Description
Technical field
The invention belongs to the silicone rubber art of room-temperature-curable, after being specifically related to cold curing, can be used for the dealcoholysis silicone rubber of Sealant and preparation method.
Background technology
Silicone rubber has the high and low temperature resistance of excellence, weatherability, electrical insulation capability, is widely used in the every field of national economy.Particularly at automotive field, replace sealing gasket at flat seal places such as engine sump tank, change speed gear box, vehicle bridge and play an important role.In transport or assembling process, obturator surface there may be greasy dirt, thus affecting the cementability of silicone rubber.Before gluing, need to clean the greasy dirt of piece surface, add matting, improve cost, and use abluent to pollute the environment.Therefore, develop a kind of silicone rubber that can be used for Sealant to have great significance.
Summary of the invention
It is an object of the invention to by selecting MS polymer to improve Sealant, it is provided that dealcoholysis silicone rubber that can be used for Sealant of a kind of room-temperature-curable and preparation method thereof.
In order to realize object of the invention it is proposed techniques below scheme:
A kind of Sealant room temperature vulcanization dealcoholysis silicone rubber, described silicone rubber is composed as follows by weight:
α, alpha, omega-dihydroxy polydimethyl siloxane 40-80 part
MS polymer 1-50 part；
Calcium carbonate 5-120 part；
Cross-linking agent 2-20 part；
White carbon 1-20 part；
Coupling agent 0.1-5 part；
Catalyst 0.01-1 part；
Described α, the kinematic viscosity of alpha, omega-dihydroxy polydimethyl siloxane is 1000-80000mm2/s；
Described MS polymer is silane-terminated polyether；
Described calcium carbonate is the precipitated calcium carbonate or ground calcium carbonate that processed through fatty acid surface；
Described cross-linking agent is a kind of in MTMS, MTES, vinyltrimethoxy silane, tetramethoxy-silicane, tetraethoxysilane or wherein several mixture；
Described white carbon is fume colloidal silica or precipitated silica；
Described coupling agent is a kind of or wherein several mixture in aminopropyl trimethoxysilane, aminopropyl triethoxysilane, aminoethylaminopropyl trimethoxy silane, aminoethylaminopropyl triethoxysilane, γ-methacryloxypropyl trimethoxy silane, γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-mercaptopropyl trimethoxysilane, NCO propyl trimethoxy silicane；
Described catalyst is a kind of or wherein several mixture in dibutyltin diacetate, dioctyl tin diacetate, dibutyl tin laurate, tin dilaurate dioctyl tin, diisooctyl dibutyitin maleate, two sad dibutyl tin two neodecanoic acid stannous methides.
The preparation method that the present invention also proposes Sealant room temperature vulcanization dealcoholysis silicone rubber, described preparation method includes step:
(1) by the α of described parts by weight, alpha, omega-dihydroxy polydimethyl siloxane, MS polymer and calcium carbonate stir in kneader；
(2) cross-linking agent adding described parts by weight carries out being stirred well to uniformly；
(3) white carbon adding described parts by weight carries out being stirred well to uniformly；
(4) coupling agent and the catalyst that add described parts by weight are stirred well to after uniformly, and plastic emitting obtains product.
The Sealant room temperature vulcanization dealcoholysis silicone rubber of the present invention improves the Sealant performance of silicone rubber, it is possible to there is occasion at a small amount of greasy dirt and uses, especially at automotive field.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, the present invention is described in more detail.
Embodiment 1
It is 1000mm by kinematic viscosity2The α of/s, alpha, omega-dihydroxy polydimethyl siloxane, MS polymer and precipitated calcium carbonate stir in kneader；Add MTMS to be sufficiently stirred for；Add fume colloidal silica to be sufficiently stirred for；After addition aminopropyl trimethoxysilane and dibutyl tin laurate are sufficiently stirred for, plastic emitting obtains product.
Consumption is with parts by weight:
Test result
Embodiment 2
It is 80000mm by kinematic viscosity2The α of/s, alpha, omega-dihydroxy polydimethyl siloxane, MS polymer and ground calcium carbonate stir in kneader；Add vinyltrimethoxy silane and tetraethoxysilane is sufficiently stirred for；Add precipitated silica to be sufficiently stirred for；After addition aminoethylaminopropyl trimethoxy silane and dioctyl tin diacetate are sufficiently stirred for, plastic emitting obtains product.
Consumption is with parts by weight:
Test result
Particular embodiments described above; the purpose of the present invention, technical scheme and beneficial effect have been carried out further detailed description; it is it should be understood that; the foregoing is only specific embodiments of the invention; it is not limited to the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (2)
1. one kind is used for Sealant room temperature vulcanization dealcoholysis silicone rubber, it is characterised in that described silicone rubber is composed as follows by weight:
α, alpha, omega-dihydroxy polydimethyl siloxane 40-80 part
MS polymer 1-50 part；
Calcium carbonate 5-120 part；
Cross-linking agent 2-20 part；
White carbon 1-20 part；
Coupling agent 0.1-5 part；
Catalyst 0.01-1 part；
Described α, the kinematic viscosity of alpha, omega-dihydroxy polydimethyl siloxane is 1000-80000mm2/s；
Described MS polymer is silane-terminated polyether；
Described calcium carbonate is the precipitated calcium carbonate or ground calcium carbonate that processed through fatty acid surface；
Described cross-linking agent is a kind of in MTMS, MTES, vinyltrimethoxy silane, tetramethoxy-silicane, tetraethoxysilane or wherein several mixture；
Described white carbon is fume colloidal silica or precipitated silica；
Described coupling agent is a kind of or wherein several mixture in aminopropyl trimethoxysilane, aminopropyl triethoxysilane, aminoethylaminopropyl trimethoxy silane, aminoethylaminopropyl triethoxysilane, γ-methacryloxypropyl trimethoxy silane, γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-mercaptopropyl trimethoxysilane, NCO propyl trimethoxy silicane；
Described catalyst is a kind of or wherein several mixture in dibutyltin diacetate, dioctyl tin diacetate, dibutyl tin laurate, tin dilaurate dioctyl tin, diisooctyl dibutyitin maleate, two sad dibutyl tin two neodecanoic acid stannous methides.
2. the preparation method of Sealant room temperature vulcanization dealcoholysis silicone rubber as claimed in claim 1, it is characterised in that described preparation method includes step:
(1) by the α of described parts by weight, alpha, omega-dihydroxy polydimethyl siloxane, MS polymer and calcium carbonate stir in kneader；
(2) cross-linking agent adding described parts by weight carries out being stirred well to uniformly；
(3) white carbon adding described parts by weight carries out being stirred well to uniformly；
(4) coupling agent and the catalyst that add described parts by weight are stirred well to after uniformly, and plastic emitting obtains product.
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| CN201510041817.8A CN104559914B (en) | 2015-01-28 | 2015-01-28 | A kind of Sealant room temperature vulcanization dealcoholysis silicone rubber and preparation method thereof |
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| CN201510041817.8A CN104559914B (en) | 2015-01-28 | 2015-01-28 | A kind of Sealant room temperature vulcanization dealcoholysis silicone rubber and preparation method thereof |
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| CN104559914B true CN104559914B (en) | 2016-07-06 |
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| CN105419336B (en) * | 2016-01-05 | 2018-07-06 | 北京天山新材料技术有限公司 | A kind of high-elongation dealcoholized type room temperature vulcanized silicone rubber and preparation method thereof |
| CN107746700A (en) * | 2017-11-06 | 2018-03-02 | 山东飞度胶业科技股份有限公司 | It is a kind of can the adiabatic cold curing silicone sealant of porcelainization and preparation method thereof |
| CN108624279A (en) * | 2018-04-23 | 2018-10-09 | 苏州达同新材料有限公司 | The special dealcoholized type fluid sealant of electronic apparatus |
| CN110003843B (en) * | 2019-04-04 | 2021-10-15 | 北京国电富通科技发展有限责任公司 | Electric composite insulator repairing adhesive and preparation method thereof |
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| CN101906246A (en) * | 2010-07-30 | 2010-12-08 | 江苏中矿大正表面工程技术有限公司 | Single-component heat resistant type silane modified polyether sealant |
| CN102146208A (en) * | 2011-01-26 | 2011-08-10 | 广州市高士实业有限公司 | Method for preparing transparent dealcoholized single-component room temperature vulcanized silicone rubber |
| CN102827568A (en) * | 2012-08-28 | 2012-12-19 | 青岛永威建材有限公司 | Continuous automatic production process of single component silane modified polyether sealant |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906246A (en) * | 2010-07-30 | 2010-12-08 | 江苏中矿大正表面工程技术有限公司 | Single-component heat resistant type silane modified polyether sealant |
| CN102146208A (en) * | 2011-01-26 | 2011-08-10 | 广州市高士实业有限公司 | Method for preparing transparent dealcoholized single-component room temperature vulcanized silicone rubber |
| CN102827568A (en) * | 2012-08-28 | 2012-12-19 | 青岛永威建材有限公司 | Continuous automatic production process of single component silane modified polyether sealant |
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