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Efficient flame-retardant silicone rubber as well as preparation method and application thereof

A silicone rubber and rubber technology, applied in the field of high-efficiency flame-retardant silicone rubber, can solve the problems of loss of other properties of silicone rubber products, and achieve the effect of improving resilience, improving flame retardant effect, good tensile strength and elongation at break

Active Publication Date: 2021-03-16
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of a large amount of flame retardants has lost other properties of silicone rubber products to a certain extent

Method used

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  • Efficient flame-retardant silicone rubber as well as preparation method and application thereof
  • Efficient flame-retardant silicone rubber as well as preparation method and application thereof
  • Efficient flame-retardant silicone rubber as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 75 parts by mass of methyl vinyl silicone rubber A with a vinyl mole fraction of 0.03%, 22 parts by mass of a vinyl mole fraction of 0.22% methyl vinyl silicone rubber B and 3 parts by mass of a vinyl mole fraction of 1% Methyl vinyl silicone rubber C is put into a kneader; 30 mass parts of fumed silica and 3.84 mass parts of hydroxyl silicone oil are added to the kneader and mixed and kneaded with the above-mentioned methyl vinyl silicone rubber;

[0044] After being mixed evenly, put 70 parts by mass of aluminum hydroxide and 3.4 parts by mass of chloroplatinic acid into a kneader and knead until completely dispersed, then take out the mixed glue;

[0045] Gradually raise the temperature of the kneader to 160°C, put in the mixed glue that has been taken out, close the cover and start vacuuming, the vacuum degree is -0.09Mpa, knead again for 1.5 hours, and perform the heat treatment step;

[0046] After the heat treatment is completed, take the mixture out, put it on t...

Embodiment 2

[0048] Except that chloroplatinic acid was replaced by chloroplatinic acid tetramethyldivinyldisiloxane complex (purchased from Shanghai Yueteng Biotechnology Co., Ltd.), the remaining components and their contents, as well as the experimental operation steps and implementation Example 1 is the same.

Embodiment 3

[0050] In addition to replacing chloroplatinic acid with 1,2,2,6,6-pentamethylpiperidinol (purchased from Wuhan Comic Biomedical Technology Co., Ltd.), the rest of the components and their contents, and the experimental procedures Same as Example 1.

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Abstract

The invention discloses flame-retardant silicone rubber, which is prepared from the following raw materials in parts by mass: 30-80 parts of methyl vinyl silicone rubber A, 10-35 parts of methyl vinylsilicone rubber B, 0-10 parts of hydroxyl silicone oil, 0-50 parts of white carbon black and 23.2-110 parts of a compound flame retardant, wherein the molar content of vinyl of the methyl vinyl silicone rubber A is 0.01-0.15%, and the molar content of vinyl of the methyl vinyl silicone rubber B is 0.2-0.5%. The preparation method of the flame-retardant silicone rubber comprises the following steps of: burdening, kneading, heat treatment, cooling, testing and packaging. The invention also discloses application of the silicone rubber in preparation of flame-retardant rubber products for transportation, electronic industry, instrument industry and aerospace industry. The flame retardance of the flame-retardant silicone rubber reaches the UL94 V0 level at the thickness of 1 mm, and the flame-retardant silicone rubber has the advantages of good mechanical property, long storage life and high stability.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a high-efficiency flame-retardant silicone rubber, its preparation and application. Background technique [0002] With the development of various aspects of human social life, the role and status of polymer materials in people's lives is becoming more and more important. Among them, silicone rubber is widely used as a polymer elastomer because of its high temperature and low temperature resistance, high elasticity, antistatic and good weather resistance. However, silicone rubber is mainly a type of polymer formed by Si-O bonds. The oxygen-containing characteristics in its molecular chain determine its poor flame retardancy. In the case of direct contact with flames, silicone rubber is easily ignited and occurs combustion. Therefore, appropriate modification of silicone rubber is required to increase its flame retardant properties. [0003] At present, the modificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K7/26C08K3/22C08K3/16C08K5/5425C08K5/3435
CPCC08L83/04C08L2201/02C08L2205/025C08L2205/035C08K2003/2227C08K7/26C08K3/22C08K3/16C08K5/5425C08K5/3435
Inventor 赵鸿宇高红凯袁琨李志斌韩田琛杜慧敏牛力强
Owner JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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