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A kind of preparation method of fast-curing dealcoholized transparent room temperature vulcanizing silicone rubber

A fast curing, room temperature vulcanization technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem of the curing speed of silicone adhesive does not have fast curing and other problems, achieve strong adhesion, low odor , the effect of improving the curing speed

Active Publication Date: 2015-11-18
湖北环宇化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the application number 201310374663.5 mentions the storage and anti-yellowing performance of the product, and the curing speed of silicone glue prepared by this method does not have the performance of rapid curing

Method used

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  • A kind of preparation method of fast-curing dealcoholized transparent room temperature vulcanizing silicone rubber
  • A kind of preparation method of fast-curing dealcoholized transparent room temperature vulcanizing silicone rubber
  • A kind of preparation method of fast-curing dealcoholized transparent room temperature vulcanizing silicone rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 100 parts of 20000cps alkoxy-terminated polydimethylsiloxane at 25°C, add 3 parts of methyltrimethoxysilane, and after mixing evenly, add 18 parts of 150 m2 / g fumed silica, and mix evenly. Add 0.25 part of dibutyltin dilaurate chelate of acetylacetone, 1 part of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1.5 part of hexamethyldisilazane, 0.5 part of acetic acid Methyl ester, 0.3 part of polyethylene glycol with a viscosity of 300cps, after mixing uniformly, remove low boilers at -0.097Mp, package.

Embodiment 2

[0030] 100 parts of alkoxy-terminated polydimethylsiloxane with a viscosity of 50000cps at 25°C, add 3 parts of methyltrimethoxysilane, 15 parts of dimethylsiloxane with a viscosity of 1000cps at 25°C, after mixing evenly, add 200 square meters / g 18 parts of fumed silica, mixed evenly. Add 0.27 parts of acetylacetone chelate of dibutyltin dilaurate, 1 part of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1.5 parts of hexamethyldisilazane, 0.5% acetone , Hydrophilic polyether silicone oil 0.5%, after mixing evenly, remove low boilers at -0.097Mp, and package.

Embodiment 3

[0034] 100 parts of alkoxy-terminated polydimethylsiloxane with a viscosity of 80000cps at 25℃, add 3 parts of methyltrimethoxysilane, 50 parts of dimethicone with a viscosity of 1000cps at 25℃, after mixing evenly, add 200 square meters / g 22 parts of fumed silica, mixed evenly. Add 0.30 part acetylacetone chelate of dibutyltin dilaurate, 1 part N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 0.5 part γ-aminopropyltrimethoxysilane, 1.5 part 0.5 part of hexamethyldisilazane, 0.5 part of butanone, 0.5 part of methyl acetate, 0.3 part of polyethylene glycol with a viscosity of 500cps at 25°C, low boilers removed at -0.097Mp, packaged.

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Abstract

The invention relates to a preparation method of a fast curing dealcoholization type transparent room-temperature silicon sulfide rubber. According to the preparation method disclosed by the invention, a water-absorbing material and an air permeable material are respectively added into a dealcoholization type transparent room-temperature silicon sulfide sealant, and the whole curing performance is improved. With the adoption of the preparation method, by adsorbing moisture in air by virtue of the water-absorbing material, absorption of a system to the moisture of a reactant is improved; by adding the air permeable material, capillary apertures and channels are formed in a dense structure of a crosslinking product, the moisture of the reactant is facilitated to enter, methyl alcohol as a product is facilitated to be released, the crosslinking speed is accelerated, the curing speed of an alcohol type transparent adhesive reaches the curing speed of an acetic acid type silicone sealant, and the curing speed of the existing silicone rubber is increased by 30-60 percent.

Description

technical field [0001] The invention belongs to the technical field of single-component room temperature vulcanized silicone rubber, in particular to a preparation method of a fast curing transparent dealcoholized single-component room temperature vulcanized silicone rubber. Background technique [0002] In the field of organic silicone sealants, dealcoholized adhesives are widely used in construction, electrical and electronic, aerospace, automobile industry, medicine and health due to their environmental protection, non-corrosiveness and economy. [0003] Dow Corning Company of the United States used carboxysilicate as a storage stabilizer, which had insufficient construction thixotropy and adhesion; Wacker Company of Germany used cyanosilane, and the rubber compound had a slight yellowing phenomenon after vulcanization. The main auxiliaries of these production methods all have defects such as difficulty in production or storage and high price. [0004] Alcohol type based...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08L83/07C08K13/02C08K3/36C09J183/04C09J183/07C09J11/04C09J11/06C09J11/08
Inventor 肖坤林汪新武黄小兰杨红波
Owner 湖北环宇化工有限公司