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Preparation method of fast curing dealcoholization type transparent room-temperature silicon sulfide rubber

A rapid curing, room temperature vulcanization technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem that the curing speed of silicone adhesive does not have fast curing, etc., to achieve strong adhesion and shockproof performance Good, excellent sealing performance

Active Publication Date: 2014-04-16
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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  • Preparation method of fast curing dealcoholization type transparent room-temperature silicon sulfide rubber
  • Preparation method of fast curing dealcoholization type transparent room-temperature silicon sulfide rubber
  • Preparation method of fast curing dealcoholization type transparent room-temperature silicon sulfide 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, mix well, add 18 parts of 150㎡ / g fumed silica, and mix well. Add 0.25 parts of acetylacetonate chelate of dibutyltin dilaurate, 1 part of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1.5 parts of hexamethyldisilazane, 0.5 parts of acetic acid Methyl ester, 0.3 parts of polyethylene glycol with a viscosity of 300cps, after mixing evenly, remove low boilers at -0.097Mp, and pack.

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 dimethyl silicone oil with a viscosity of 1000cps at 25°C, mix well, add 200㎡ 18 parts / g fumed silica, mix well. Add 0.27 parts of acetylacetone chelate of dibutyltin dilaurate, 1 part of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1.5 parts of hexamethyldisilazane, acetone 0.5% , Hydrophilic polyether silicone oil 0.5%, after mixing evenly, remove low boilers at -0.097Mp, pack.

Embodiment 3

[0034] 100 parts of alkoxy-terminated polydimethylsiloxane with a viscosity of 80000cps at 25°C, add 3 parts of methyltrimethoxysilane, 50 parts of dimethyl silicone oil with a viscosity of 1000cps at 25°C, mix well, add 200㎡ 22 parts / g fumed silica, mix well. Add 0.30 parts of acetylacetone chelate of dibutyltin dilaurate, 1 part of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 0.5 parts of γ-aminopropyltrimethoxysilane, 1.5 1 part of hexamethyldisilazane, 0.5 part of methyl ethyl ketone, 0.5 part of methyl acetate, 0.3 part of polyethylene glycol with a viscosity of 500 cps at 25°C, remove low boilers at -0.097Mp, and pack.

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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 one-component room-temperature vulcanized silicone rubber, and in particular relates to a preparation method of fast-curing transparent dealcoholized one-component room-temperature vulcanized silicone rubber. Background technique [0002] In the field of organic silicone sealants, dealcoholized adhesives are widely used in construction, electronics, aerospace, automobile industry, medicine and health because of their environmental protection, non-corrosiveness and economy. [0003] Dow Corning in the United States uses carboxysilicate as a storage stabilizer, which has construction thixotropy and lack of adhesion; Wacker in Germany uses cyanosilane, and the rubber has a slight yellowing phenomenon after vulcanization. The main auxiliary agents of these production methods all have defects such as production or storage difficulties and high prices. [0004] Alcohol type with alkoxy-terminated polydimethyls...

Claims

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Application Information

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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
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