Organic silicone adhesive for fire-resistant mica tapes and preparation method

A technology of silicone adhesive and refractory mica, which is applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of easy residual glue, cohesive strength and peel strength that cannot fully meet the requirements, and achieve stickiness Good strength, good insulation, and balanced sticking force

Active Publication Date: 2014-12-24
湖北隆胜四海新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as a kind of "special silicone adhesive for fire-resistant mica tape and production method" provided by Chinese invention patent application publication CN101157844A, a kind of "a kind of less glue mica tape organic silicon adhesive and its Preparation method", however, silicone adhesives based on silicone rubber and MQ resin are prone to residual glue at temperatures above 260°C, and cannot fully meet the requirements in terms of cohesive strength and peel strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] ① Hydrolysis. Add 300g of deionized water and 150g of toluene into a 2000ml four-necked flask equipped with a thermometer, stirring, reflux condenser and dropping funnel, and add 115g of trimethylchlorosilane, 14g of tetramethyldivinyldisiloxane, methyl Mix 15g of phenyldichlorosilane and 300g of toluene evenly, pour into a 1000ml dropping funnel, start stirring, raise the temperature and add the chlorosilane mixed solution dropwise at 30°C. After 4 hours of dripping, pour 312g of tetraethoxysilane into the dropping funnel, raise the temperature to 60°C, add tetraalkoxysilane dropwise, drop it for 2 hours, continue to heat up to 80°C and keep it warm for 3 hours Hour.

[0039] ② Wash with water. After hydrolysis, the temperature is lowered to below 40°C, and the layers are allowed to stand for stratification. The acid-containing mixed alcohol aqueous solution in the lower layer is separated, and the upper layer is washed with deionized water until neutral.

[0040] ③...

Embodiment 2

[0042] ① Hydrolysis. Add 450g of deionized water and 200g of toluene into a 2000ml four-neck flask equipped with a thermometer, stirring, reflux condenser and dropping funnel, and add 163g of trimethylchlorosilane, 18g of dimethylvinylchlorosilane, methylphenyl Mix 29g of dichlorosilane and 400g of toluene evenly, pour into a 1000ml dropping funnel, start stirring, raise the temperature and add the chlorosilane mixed solution dropwise at 40°C. After 5 hours of dropping, pour 480g of tetrabutoxysilane into the dropping funnel, raise the temperature to 70°C, add tetraalkoxysilane dropwise, finish dropping in 3 hours, continue to heat up to 80°C and keep warm for 2 hours Hour.

[0043] ② Wash with water. After hydrolysis, the temperature is lowered to below 40°C, and the layers are allowed to stand for stratification. The acid-containing mixed alcohol aqueous solution in the lower layer is separated, and the upper layer is washed with deionized water until neutral.

[0044] ③ ...

Embodiment 3

[0046]① Hydrolysis. Add 400g of deionized water and 150g of toluene into a 2000ml four-necked flask equipped with a thermometer, stirring, reflux condenser and dropping funnel, and add 130g of trimethylchlorosilane, 10g of methylvinyldichlorosilane, diphenyl dichlorosilane Mix 15g of chlorosilane and 300g of xylene evenly, pour it into a 1000ml dropping funnel, start stirring, raise the temperature and add the mixed solution of chlorosilane dropwise at 50°C. After 4 hours of dripping, pour 305g of tetramethoxysilane into the dropping funnel, raise the temperature to 60°C, add tetraalkoxysilane dropwise, drop it for 3 hours, continue to heat up to 80°C and keep it warm for 4 hours Hour.

[0047] ② Wash with water. After hydrolysis, the temperature is lowered to below 40°C, and the layers are allowed to stand for stratification. The acid-containing mixed alcohol aqueous solution in the lower layer is separated, and the upper layer is washed with deionized water until neutral. ...

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PUM

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Abstract

The invention discloses an organic silicone adhesive for fire-resistant mica tapes and a preparation method. The organic silicone adhesive is prepared after reaction of the following ingredients, by weight, 1 part of hydroxy silicone rubber, 1.0-3 parts of organic silicone resin, 1.5-3 parts of organic solvents and 0.00005-0.001 part of condensation catalysts. The main chain link of the organic silicone resin is R3SiO1 / 2.R2ViSiO1 / 2.Ph2Si2 / 2.SiO4 / 2, One-functional, bifunctional and tetra-functional silane monomers are employed as raw materials, and the organic silicone adhesive is prepared after processing steps of hydrolysis, water washing, distillation, condensation and the like. The method is advantageous in that, the raw materials are cheap and easily available, the operation is easy and the method is easy for industrial production. The organic silicone adhesive is used for preparing fire-resistant mica tapes, has good insulating properties and high temperature resistance, has no adhesive residues at the temperature of 260 DEG C, and has good balance of initial adhesion, adhesive strength and permanent adhesion.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to an organic silica gel adhesive for fire-resistant mica tape and a preparation method thereof. Background technique [0002] Fire-resistant mica tape is a kind of fire-resistant insulating material, which is wrapped on the surface of the cable to ensure the normal operation of the equipment system in an emergency and enable people to escape from the accident scene as quickly as possible. The materials that make up the refractory mica tape are mica paper, adhesive and reinforcing material glass cloth. Among them, the mica paper is a material that really plays the role of electrical insulation and fire resistance; the non-alkali glass cloth is a reinforcing material, so that the fire-resistant belt has sufficient strength; and the adhesive combines the mica paper and glass cloth into one, bonding The selection of the agent must meet the high bonding strength between t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/08C09J183/06C09J11/06C08G77/24C08G77/20C08G77/18
Inventor 龚家全陈华玲杨开柱
Owner 湖北隆胜四海新材料有限公司
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