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Tear-resistant additive for silicone rubber and preparation method of tear-resistant additive

An anti-tear, silicone rubber technology, applied in the field of rubber materials, can solve the problems of few anti-tear additives and complicated preparation methods, and achieve the effect of simple preparation method, simple preparation process and improved tear performance.

Active Publication Date: 2019-04-02
SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN104559202A discloses a preparation method of high tear-resistant silicon compound rubber, which is mainly obtained by mixing methyl vinyl silica gel with white carbon black, zinc stearate and vinyl silicone oil, but the preparation method is complicated
Although there are relevant patents published for tear-resistant silicone rubber, there are few relevant publications on tear-resistant additives for silicone rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) 120 g of triallyl isocyanurate and 60 g of tetramethyltetravinylcyclotetrasiloxane were placed in a conical flask, stirred for 3 minutes, and the mixture was uniformly mixed to obtain a mixture 1;

[0032] (2) Add 12 g of hydrogen-containing silicone oil with a hydrogen content of 0.18% (Guangzhou Jucheng Zhaoye Organic Silicon Raw Material Co., Ltd.) into the mixed solution in step 1, and stir for 5 minutes to obtain mixed solution 2;

[0033] (3) Add 0.72g of platinum-vinylsiloxane complex (Guangzhou Jucheng Zhaoye Organic Silicon Raw Material Co., Ltd.) dropwise into the mixed liquid 2, stirring at a speed of 300r / min, and controlling the reaction temperature to 50°C. After 30 minutes, the anti-tear additive for silicone rubber was prepared.

Embodiment 2

[0035] (1) 60 g of triallyl isocyanurate and 60 g of tetramethyltetravinylcyclotetrasiloxane were placed in a conical flask, stirred for 5 minutes to make the mixed solution uniform, and obtained mixed solution 1;

[0036] (2) Add 6g of hydrogen-containing silicone oil (Guangzhou Jucheng Zhaoye Organic Silicon Raw Material Co., Ltd.) into the mixed solution in step 1, and stir for 8 minutes to obtain mixed solution 2;

[0037] (3) Add 0.3g of platinum-ethynyl complex (Guangzhou Jucheng Zhaoye Organic Silicon Raw Materials Co., Ltd.) catalyst dropwise to the mixed solution in step 2, stirring at a speed of 500r / min, and controlling the reaction temperature to 80°C. After 60 minutes, the product obtained is the tear-resistant silicone rubber additive.

Embodiment 3

[0039] (1) Put 15g of triallyl isocyanurate and 60g of tetramethyltetravinylcyclotetrasiloxane in a conical flask, stir for 10min, make the mixed solution uniform, and obtain mixed solution 1;

[0040] (2) Add 3g of hydrogen-containing silicone oil into the mixed solution in step 1, and stir for 10 minutes to obtain mixed solution 2;

[0041] (3) Slowly add 0.09g of platinum-ethynyl complex (Guangzhou Jucheng Zhaoye Organic Silicon Raw Materials Co., Ltd.) catalyst dropwise into the mixed liquid in step 2, stirring at a speed of 1000r / min, and controlling the reaction temperature at 125°C. After 180 minutes, the product obtained is the tear-resistant silicone rubber additive.

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Abstract

The invention provides a tear-resistant additive for silicone rubber and a preparation method of the tear-resistant additive. The tear-resistant additive is characterized by being prepared by carryingout a reaction on a multi-vinyl compound with vinyl cyclosiloxane, a cross-linking agent and a catalyst at a temperature of 50-125 DEG C. The tear-resistant additive for the silicone rubber providedby the invention is simple in preparation process, and when the tear-resistant additive is added into a solid silicone rubber material, the tearing performance of the material can be effectively improved.

Description

technical field [0001] The invention belongs to the field of rubber materials, in particular to an anti-tear additive for silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber has good aging resistance, electrical insulation performance, and high and low temperature resistance. The application of silicone rubber composite materials in the automotive, medical, and aerospace fields has developed rapidly. However, affected by its chemical structure, the mechanical strength of silicone rubber is lower than that of natural rubber. Rubber and styrene-butadiene rubber are lower. It is more and more important to further improve the mechanical and mechanical strength of silicone rubber, especially the tear strength. Chinese patent CN107964248A discloses a low-modulus high-tear strength silicone rubber and a preparation method thereof, which is mainly obtained by mixing different vinyl rubbers with white carbon black and a silane coupling age...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/44C08G77/26C08G77/20C08G77/08C08L83/04C08L83/08
CPCC08G77/08C08G77/20C08G77/26C08G77/44C08L83/04C08L2205/02C08L83/08
Inventor 朱立新李要山吴良辉
Owner SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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