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High-temperature-resistant flame-retardant silicone rubber and preparation method thereof

A technology of silicone rubber and high temperature resistance, applied in the field of high temperature resistant flame retardant silicone rubber and its preparation, can solve the problem that silicone rubber cannot have excellent flame retardancy and high temperature resistance at the same time, and achieve excellent mechanical properties and excellent high temperature resistance. and flame retardant performance, the effect of strong operability

Inactive Publication Date: 2019-06-11
DONGGUAN NANJU POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the silicone rubber in the background technology cannot have excellent flame retardancy and high temperature resistance at the same time, the present invention proposes a high temperature resistant flame retardant silicone rubber and its preparation method. The silicone rubber prepared by the present invention has excellent Excellent high temperature resistance and flame retardancy, and has excellent mechanical properties and excellent aging resistance; the process for producing the silicone rubber provided by the invention is convenient, strong in operability, and stable in product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of high-temperature-resistant and flame-retardant silicone rubber proposed by the present invention comprises the following components in parts by weight: 100 parts of vinyl-terminated silicone rubber raw rubber, 40 parts of white carbon black, 30 parts of filler, and 10 parts of flame retardant , 3 parts of structural control agent, 2 parts of heat-resistant agent, 0.5 part of coupling agent and 0.1 part of release agent;

[0036] Among them, the molecular weight of the vinyl-terminated silicone rubber raw rubber is 500,000 to 900,000, and the vinyl content is 0.03% to 3.0%. Further, the molecular weight and vinyl content of the vinyl-terminated silicone rubber raw rubber can be selected from one of them. or multiple combinations;

[0037] For example: 600,000 vinyl content 0.04% raw rubber 75phr is used in conjunction with 600,000 vinyl content 0.23% raw rubber 25phr;

[0038] For example: 85 phr of 800,000 molecular weight raw rubber with 0.04% vinyl content,...

Embodiment 2

[0067] A kind of high-temperature-resistant and flame-retardant silicone rubber proposed by the present invention comprises the following components in parts by weight: 100 parts of vinyl-terminated silicone rubber raw rubber, 50 parts of white carbon black, 50 parts of filler, and 20 parts of flame retardant , 5 parts of structural control agent, 4 parts of heat-resistant agent, 1 part of coupling agent and 0.6 part of release agent;

[0068] Among them, the molecular weight of the vinyl-terminated silicone rubber raw rubber is 500,000 to 900,000, and the vinyl content is 0.03% to 3.0%. Further, the molecular weight and vinyl content of the vinyl-terminated silicone rubber raw rubber can be selected from one of them. or multiple combinations;

[0069] For example: 600,000 vinyl content 0.04% raw rubber 75phr is used in conjunction with 600,000 vinyl content 0.23% raw rubber 25phr;

[0070] For example: 85 phr of 800,000 molecular weight raw rubber with 0.04% vinyl content, 1...

Embodiment 3

[0099] A kind of high-temperature-resistant and flame-retardant silicone rubber proposed by the present invention comprises the following components in parts by weight: 100 parts of vinyl-terminated silicone rubber raw rubber, 60 parts of white carbon black, 70 parts of filler, and 30 parts of flame retardant , 7 parts of structural control agent, 5 parts of heat-resistant agent, 2 parts of coupling agent and 1 part of release agent;

[0100] Among them, the molecular weight of the vinyl-terminated silicone rubber raw rubber is 500,000 to 900,000, and the vinyl content is 0.03% to 3.0%. Further, the molecular weight and vinyl content of the vinyl-terminated silicone rubber raw rubber can be selected from one of them. or multiple combinations;

[0101] For example: 600,000 vinyl content 0.04% raw rubber 75phr is used in conjunction with 600,000 vinyl content 0.23% raw rubber 25phr;

[0102] For example: 85 phr of 800,000 molecular weight raw rubber with 0.04% vinyl content, 10...

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Abstract

The invention discloses high-temperature-resistant flame-retardant silicone rubber and a preparation method thereof, and relates to the technical field of flame retardancy and high-temperature-resistant modification of silicone rubber. The high-temperature-resistant flame-retardant silicone rubber comprises the following components, in parts by weight: 100 parts of vinyl-terminated silicone rubberraw rubber, 40-60 parts of white carbon black, 30-70 parts of a filler, 10-30 parts of a flame retardant, 3-7 parts of a structuring controlling agent, 2-5 parts of a heat-resistant agent, 0.5-2 parts of a coupling agent and 0.1-1 part of a demoulding agent, wherein the vinyl-terminated silicone rubber raw rubber has a molecular weight of 500,000-900,000 and a vinyl content of 0.03%-3.0%. The invention also discloses a preparation method of the high-temperature-resistant flame-retardant silicone rubber. According to the preparation method provided by the invention, the silicone rubber prepared by the method has excellent high-temperature resistance and flame retardancy, and has excellent mechanical properties and aging resistance.

Description

technical field [0001] The invention relates to the technical field of flame retardant and high temperature resistant modification of silicone rubber, in particular to a high temperature resistant flame retardant silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber refers to the rubber whose main chain is composed of silicon and oxygen atoms alternately. There are usually two organic groups attached to the silicon atom. Silicone rubber has good low temperature resistance and can generally work at -55°C. After introducing phenyl, it can reach -73°C. The heat resistance of silicone rubber is also outstanding. It can work for a long time at 180 °C, and it can withstand a few weeks or longer at a temperature slightly higher than 200 °C. It can still withstand high temperatures above 300 °C instantly. [0003] In recent years, with the rapid development of the automobile manufacturing industry and the electronics industry, the requireme...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08K13/06C08K9/06C08K3/36C08K7/26C08K3/34C08K3/22C08K7/10C08K5/098H01B3/28
Inventor 吴奇明
Owner DONGGUAN NANJU POLYMER MATERIAL CO LTD
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