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Heat-resistant high-temperature vulcanized silicone rubber and preparation method thereof

A high-temperature vulcanization and high-temperature-resistant technology, which is applied in the field of silicone rubber compounds, can solve the problems of low comprehensive performance of rubber compounds, and achieve the effects of easy universal production and promotion, easy availability of raw materials, and low aging attenuation

Inactive Publication Date: 2017-09-08
浙江恒业成有机硅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the presence of heavy powder with a large proportion in the rubber compound system, the overall performance of the rubber compound will drop significantly.

Method used

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  • Heat-resistant high-temperature vulcanized silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 100 parts of raw rubber, 4 parts of hydroxy silicone oil, 0.4 parts of stearic acid, 2 parts of vinylmethyldimethoxysilane, 20 parts of specific surface area of ​​150m 2 / g of white carbon black, after mixing evenly, heat treatment at 150°C for 30 minutes, add 5 parts of nano-sized iron oxide, 15 parts of micron-sized iron hydroxide, 2 parts of methylphenyl silicone resin, 1 part of diphenyl silicon Diol, after mixing evenly, heat treatment at 200°C for 40 minutes, vacuum for 1 hour, remove low molecular weight, and cool to discharge.

Embodiment 2

[0028] The previous steps are the same as in Example 1. After heat treatment, add 5 parts of nanoscale iron oxide, 10 parts of micron iron hydroxide, 2 parts of phenyl MQ silicone resin, and 1 part of phenyltriethoxysilane. After banburying evenly, heat treatment at 150°C 40min, vacuum 1h, remove low molecular weight, cool and discharge.

Embodiment 3

[0030] The previous steps are the same as in Example 1. After heat treatment, add 5 parts of nano-sized cerium oxide, 15 parts of micron-sized silicon powder, 2 parts of phenyl MQ silicone resin, and 1 part of phenyltriethoxysilane. After banburying evenly, heat treatment at 150°C 40min, vacuum 1h, remove low molecular weight, cool and discharge.

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Abstract

The invention relates to heat-resistant high-temperature vulcanized silicone rubber. The heat-resistant high-temperature vulcanized silicone rubber is prepared from, by weight, 100 parts of crude rubber, 10-100 parts of a reinforcing filler, 1-100 parts of a nano-scale heat-resistant filler, 1-100 parts of a micron-scale heat-resistant filler, 0.5-20 parts of a small-molecular heat-resistant agent, 3-15 parts of a structurized control agent, 1-10 parts of a surface-treated agent, 0.1-10 parts of a heat-resistant surface-treated agent and 0.1-10 parts of an internal deformable auxiliary. The heat-resistant high-temperature vulcanized silicone rubber is suitable for multiple product molding processes of mold pressing, extruding, injecting and the like, and high-temperature working devices of various shapes can be molded; the product is good in heat-resistant effect after vulcanization, hardness can be adjusted by synchronous adjustment of formulas and processes, use of different environments is met, good mechanical performance in long-time high-temperature environment can be sustained, working environment is protected, and stable operation of equipment is maintained.

Description

technical field [0001] The invention belongs to the technical field of organosilicon compound rubber, and in particular relates to a high-temperature-resistant high-temperature vulcanized silicone rubber and a preparation method thereof. Background technique [0002] High-temperature vulcanized silicone rubber is based on linear high-molar mass silicone rubber, mixed with reinforcing agents, fillers, structure control agents, etc., and vulcanized into elastomers under heating and pressure conditions. Silicone rubber is an elastomer with excellent comprehensive properties. It has many unique properties, including excellent weather resistance, ozone resistance, arc resistance, electrical insulation, chemical resistance, high air permeability and biological inertness. Some fillers with special properties Mixing and molding with silicone rubber can highlight the excellent properties of silicone rubber. Normally, vulcanized silicone rubber can be used continuously and permanentl...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08L83/06C08K13/02C08K3/36C08K3/22C08K5/09
CPCC08K2003/2227C08K2003/2265C08K2201/006C08K2201/011C08L83/04C08L2201/08C08L2205/02C08L2205/025C08L2205/035C08L83/06C08K13/02C08K3/36C08K3/22C08K5/09C08K2003/2213
Inventor 孟繁茹赵海洋吴忆南
Owner 浙江恒业成有机硅有限公司
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