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A modified flame retardant, high temperature resistant flame retardant silicone rubber using the flame retardant and application thereof

A silicone rubber and flame retardant technology, which is applied in the field of rubber products and modified flame retardants, can solve the problems of lifesaving and firefighting personnel, corrosion of instruments and equipment, limited application range, etc., to improve market competitiveness, The effect of low cost and easy availability of raw materials

Active Publication Date: 2022-02-18
QISHENG RUBBER & PLASTIC PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polymer materials containing halogen-based flame retardants will produce a large amount of smoke and toxic and corrosive gases when burned. A fire will have a greater impact on lifesaving and firefighters, and may corrode instruments and equipment.
For phosphorus-based flame retardants, due to the limitation of the flame-retardant mechanism, it is required that the structure of the flame-retardant material must contain a large amount of hydrogen and oxygen elements to form a carbonized layer during combustion, so its application range is limited.

Method used

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  • A modified flame retardant, high temperature resistant flame retardant silicone rubber using the flame retardant and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Add 10 kg of polyolefin elastomer, 10 kg of vinyltrimethoxysilane, and 2 kg of dicumyl peroxide into the reactor and mix evenly, heat to 170 ° C for 10 minutes to melt and graft, then add 0.33 kg of white carbon black, 0.33 kilograms of ferric oxide, 0.33 kilograms of barium sulfate melt blending discharging. Then hot-press at 170°C for 3 minutes in a flat vulcanizer, cool to room temperature and cold-press into sheets.

Embodiment 2

[0056]Add 10 kg of polyolefin elastomer, 10 kg of vinyltrimethoxysilane, and 3 kg of dicumyl peroxide into the reactor and mix evenly, heat to 160 ° C for 1 minute for melting and grafting, then add 0.66 kg of white carbon black, 0.66 kilogram of ferric oxide, 0.66 kilogram of barium sulfate melt blending discharging. Then hot-press at 160°C for 10 minutes in a flat vulcanizer, cool to room temperature and cold-press into sheets.

Embodiment 3

[0058] Add 10 kg of polyolefin elastomer, 10 kg of vinyltrimethoxysilane, and 2.5 kg of dicumyl peroxide into the reactor and mix evenly, heat to 170 ° C for 1 minute to melt and graft, then add 0.46 kg of white carbon black, 0.46 kilogram of ferric oxide, 0.46 kilogram of barium sulfate melt blending discharging. Then hot-press at 170°C for 5 minutes in a flat vulcanizer, cool to room temperature and cold-press into sheets.

[0059] 2. Preparation of modified flame retardant

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Abstract

The invention discloses a modified flame retardant, high temperature resistant flame retardant silicone rubber and its application. The modified flame retardant consists of p-tert-butylphenol and hydroquinone with a molar ratio of 1:1, and the weight is p- It is prepared by using 10-15% aluminum hydroxide based on the total weight of tert-butylphenol and hydroquinone, and phosphorus oxychloride in a molar ratio of 0.6-1:1 to p-tert-butylphenol or hydroquinone. High temperature resistant and flame retardant silicone rubber, made from the following components calculated in parts by weight, modified methyl vinyl silicone rubber: 60-70 parts; modified polyolefin elastomer: 25-30 parts; modified flame retardant : 10-30 parts; Magnesium stearate: 1-3 parts; Stearic acid: 1-3 parts; Calcium carbonate: 1-3 parts. The characteristics of high temperature resistance, flame retardancy, weather resistance and aging resistance are improved; the raw materials of the prepared product are easy to obtain, the cost is low, and it is beneficial to large-scale production and improves market competitiveness.

Description

technical field [0001] The invention relates to a modified flame retardant, a high-temperature-resistant flame-retardant silicone rubber using the flame retardant, and the application of the silicone rubber to silicone tubes for automobiles, belonging to the field of rubber products industry. Background technique [0002] The automobile industry is a pillar industry of the national economy. The rapid development of the automobile industry in recent years has brought unprecedented opportunities to the rubber industry. While continuously improving product quality and optimizing production technology, the rubber industry pays more attention to the modification of existing synthetic rubber, so that it will continue to develop in the direction of specialization and high performance. At present, the demand for high-temperature-resistant and high-flame-retardant rubber hoses in the domestic market is growing rapidly, especially when adding flame retardants, the chlorine index, comb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L51/06C08K13/02C08K5/523C08K3/22C08K3/32C08K5/098C08K5/09C08K3/26
CPCC08L83/04C08L2201/02C08L2203/18C08L2201/08C08K2003/2227C08K2003/323C08K2003/222C08K2003/265
Inventor 应仁标裴文
Owner QISHENG RUBBER & PLASTIC PROD CO LTD