Radiation-resistant assistant for silicone rubber and preparation method thereof

A radiation-resistant, silicone rubber technology

Inactive Publication Date: 2017-05-31
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the radiation resistance is better, the heat resistance is not enough to meet the actual needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Add 1g of OVS and 10ml of anhydrous dichloromethane into a 50ml eggplant-shaped flask, and stir at room temperature to make the mixture even. 1.58 mmol trifluoromethanesulfonic acid was added dropwise in a constant temperature water bath at 0 °C, stirred for 4 h under a nitrogen atmosphere, and gradually returned to room temperature. The obtained solution was washed more than 3 times with saturated sodium carbonate solution, the solution changed from yellow to colorless, the liquid was separated, and a white powder was obtained by rotary evaporation.

[0021] (2) Add the powder obtained in (1) directly into 20ml of wet acetone (V 丙酮 : V 水 =4:1), stirred at room temperature for 24 hours to obtain a white solution, dried with anhydrous magnesium sulfate, and was vacuum-dried at room temperature by rotary evaporation to obtain the product.

[0022] (3) Weigh 3.9g of the black powder of tetraphenylcyclopentadienone, put it into the reaction bottle together with 1g o...

Embodiment 2

[0024] (1) Add 1g of OVS and 10ml of anhydrous dichloromethane into a 50ml eggplant-shaped flask, and stir at room temperature to make the mixture even. 1.58 mmol trifluoromethanesulfonic acid was added dropwise in a constant temperature water bath at 0 °C, stirred for 4 h under a nitrogen atmosphere, and gradually returned to room temperature. The obtained solution was washed more than 3 times with saturated sodium carbonate solution, the solution changed from yellow to colorless, the liquid was separated, and a white powder was obtained by rotary evaporation.

[0025] (2) Add the powder obtained in (1) directly into 20ml of wet acetone (V 丙酮 : V 水 =4:1), stirred at room temperature for 24 hours to obtain a white solution, dried with anhydrous magnesium sulfate, and was vacuum-dried at room temperature by rotary evaporation to obtain the product.

[0026] (3) Weigh 7.8g of the black powder of tetraphenylcyclopentadienone, put it into the reaction bottle together with 1g o...

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PUM

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Abstract

The invention discloses a radiation-resistant assistant for silicone rubber and a preparation method thereof and relates to an assistant and a preparation method thereof. According to the assistant, tetraphenyl phenyl and hydroxyl-modified OVS (octavinyl poss) is adopted as the radiation-resistant assistant, and the structure is as shown in the description. The radiation resistance of the phenyl-containing silicone rubber is obviously better than that of methyl silicone rubber, and the changes of the cross-linking density and the dynamic mechanical property after radiation are small. The cross-linking efficiency can be significantly reduced by phenyl, and the radiation protection effect is exponentially increased along with increase of phenyl concentration. The tetraphenyl phenyl and hydroxyl-modified OVS (octavinyl POSS) is introduced as the radiation-resistant assistant, so that the silicone rubber has relatively good radiation resistance, meanwhile, the radiation-resistant assistant has very high molecular activity and the comprehensive mechanical property is improved.

Description

technical field [0001] The invention relates to an auxiliary agent and a preparation method thereof, in particular to a radiation resistance auxiliary agent for silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber has outstanding high and low temperature resistance, maintains good elasticity in the temperature range of -70°C to +260°C, is resistant to ozone and weathering, and has excellent properties such as waterproof, flame retardant, high temperature resistance, electrical conductivity, and oil resistance. performance. However, the existing silicone rubber products have the disadvantages of poor radiation resistance, and the sealing performance is prone to failure in a high-radiation environment for a long time. With the rapid development of science and technology and industry, nuclear power plants, ultraviolet light, thermal radiation, etc. have higher requirements on the radiation resistance of silicone rubber. Improving its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L83/07C08G77/38C08G77/04
CPCC08L83/04C08G77/045C08G77/38C08L2201/08C08L2205/02C08L83/06
Inventor 葛铁军赵越肖尚雄张瑾张煜欣
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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