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Environment-friendly ablation-resistant ceramic silicone rubber composite material and preparation method thereof

A technology for ceramicizing silicone rubber and composite materials, which is applied in the field of silicone rubber composite materials, can solve the problems of high production cost of coating materials, poor resistance to ablation and ablation of insulating layers, etc., and achieves easy industrial production, good processing performance, good mechanical properties

Active Publication Date: 2014-07-16
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of conventional wire and cable insulation layers such as poor ablation resistance, ablation resistance, and high production cost of coating materials, and to provide a practical ceramic with better performance in a wide temperature range (500°C-1500°C). Silicone rubber composite material, by adding sintering aids to improve the ceramic sintering performance of the material, adding silicone oil to improve the mechanical properties of the composite material, while ensuring good mechanical properties, the ceramic performance of the material is significantly improved, and the processing is easier , the production cost is lower, so that it can be used in production practice

Method used

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  • Environment-friendly ablation-resistant ceramic silicone rubber composite material and preparation method thereof
  • Environment-friendly ablation-resistant ceramic silicone rubber composite material and preparation method thereof
  • Environment-friendly ablation-resistant ceramic silicone rubber composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036]Mix 100g of silicone rubber methyl vinyl silicone rubber, 60g of fumed silica, and 11g of hexamethyldisilazane in an internal mixer at a temperature not higher than 80°C; then mix 10g of magnesium oxide, zirconia Add 10g, 1g of high vinyl silicone oil, 8g of hydroxy silicone oil, and 0.6g of hydrogen-containing silicone oil into the internal mixer, and knead the vitrified powder, silicone oil and the kneaded mixture evenly to form ceramic silicone rubber; Take out the good vitrified silicone rubber, and place it to cool down to 25°C-30°C; knead the ceramicized silicone rubber that has been placed and cooled to 25°C-30°C on an open mill, add 2 parts of vulcanizing agent, and the temperature is not higher than 50 ℃, so that the vulcanizing agent and the kneaded vitrified silicone rubber are evenly mixed into a sheet; after the sheet is released, it is formed by hot pressing at 165°C and 15MPa for 15 minutes with a 25-ton flat-panel vulcanizer; after molding, the material is...

Embodiment 2

[0038] Mix 100g of silicone rubber methyl vinyl silicone rubber, 60g of fumed silica, and 11g of hexamethyldisilazane in an internal mixer at a temperature not higher than 80°C; then mix 10g of magnesium oxide, aluminum oxide 10g, 10g of borax, 2g of high vinyl silicone oil, 8g of hydroxyl silicone oil, and 0.6g of hydrogen-containing silicone oil are added to the internal mixer, and the vitrified powder, silicone oil and the kneaded mixture are mixed evenly to form ceramic silicone rubber; Take out the kneaded vitrified silicone rubber, and place it to cool down to 25°C-30°C; knead the vitrified silicone rubber that has been placed and cooled to 25°C-30°C on an open mill, add 2 parts of vulcanizing agent, and keep the temperature constant. When the temperature is higher than 50°C, the vulcanizing agent and the kneaded vitrified silicone rubber are evenly mixed into a sheet; after the sheet is released, it is formed by hot pressing at 165°C and 15MPa for 15 minutes with a 25-to...

Embodiment 3

[0040] Mix 100g of silicone rubber methyl vinyl silicone rubber, 60g of fumed silica, and 11g of hexamethyldisilazane in an internal mixer at a temperature not higher than 80°C; then mix 10g of magnesium oxide, aluminum oxide Add 10g, lithium porcelain stone powder 5g, borax 10g, high vinyl silicone oil 2g, hydroxyl silicone oil 8g, and hydrogen-containing silicone oil 0.6g into the internal mixer, and make the porcelain powder, silicone oil and the mixed mixture evenly mixed to form Ceramic silicone rubber; take out the kneaded ceramic silicone rubber, and place it to cool down to 25°C-30°C; knead the ceramic silicone rubber cooled to 25°C-30°C on the open mill, add 2 parts Vulcanizing agent, the temperature is not higher than 50°C, so that the vulcanizing agent and the kneaded vitrified silicone rubber are evenly mixed into a sheet; after the sheet is released, use a 25-ton flat vulcanizer to press at 165°C and 15MPa for 15 minutes to form; forming Finally, the material is s...

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Abstract

The invention relates to an environment-friendly ablation-resistant ceramic silicone rubber composite material and a preparation method thereof. The composite material consists of silicone rubber, white carbon black, vitrified powder, a fusion aid, silicone oil and a coupling agent. The composite material is prepared by the following steps: first, mixing 50-150 parts of silicone rubber, 5-80 parts of white carbon black, 5-20 parts of coupling agent, 2-80 parts of vitrified powder, 2-30 parts of fusion aid and 0.1-20 parts of silicone oil; then, adding 2-10 parts of vulcanizing agent, uniformly mixing to obtain a sheet; and finally, carrying out hot press molding on the obtained sizing material under the pressure of 10-15MPa and at 100-200 DEG C, and carrying out two-sectional vulcanization by virtue of hot air with temperature of 150-220 DEG C to obtain the ceramic silicone rubber composite material. According to the composite provided by the invention, the ceramic performance of the material is greatly improved while the mechanical property of the composite material is ensured, and therefore the composite material has a wide application range.

Description

technical field [0001] The invention relates to the field of silicone rubber composite materials. Specifically, it relates to an environment-friendly ablation-resistant ceramic silicone rubber composite material and a preparation method thereof. Background technique [0002] In recent years, fires in several large public entertainment venues and commercial buildings in China have caused heavy losses of people's lives and property. With the rapid growth of urban population, high-rise buildings, large supermarkets, continuous increase, subway, tunnel traffic construction, etc., the importance of fire protection and fire safety is highlighted. How to ensure the smooth flow of power and communication within a certain period of time in the event of a fire, to maximize the precious time and reduce casualties and loss of life and property, this is a subject that people have been constantly exploring. [0003] At present, most fire-resistant and flame-retardant wires and cables us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08L83/05C08K13/02C08K3/36C08K3/22C08K3/38C08K5/14B29C35/02B29B7/74
Inventor 郭卫红曹二平任佳伟于云安傅晓伟王楷戴宝杰崔晓倩崔中纹汪济奎
Owner EAST CHINA UNIV OF SCI & TECH
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