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A kind of phenyl dimethylsiloxy cage silsesquioxane silicone rubber crosslinking agent and preparation method thereof

A technology of phenyldimethylsiloxane and silsesquioxane is applied in the field of rubber crosslinking agent and its preparation, and can solve the problems that mechanical properties cannot meet operation requirements and the like

Active Publication Date: 2019-06-21
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Starting from the cross-linking agent, the current synthetic silicone rubber generally uses hydrogen-containing silicone oil as the cross-linking agent. Due to its linear structure, the heat-resistant temperature of the cured silicone rubber often cannot meet the operating requirements.

Method used

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  • A kind of phenyl dimethylsiloxy cage silsesquioxane silicone rubber crosslinking agent and preparation method thereof
  • A kind of phenyl dimethylsiloxy cage silsesquioxane silicone rubber crosslinking agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 100 parts of vinyl silicone rubber (viscosity 20000mPa s), then add 30 parts of phenyldimethylsiloxy cage silsesquioxane dissolved in cyclohexane, stir with a glass rod to make it Mix well. Put it into a vacuum drying oven to vacuumize and defoam. Then, 0.2 parts of PC610 inhibitor, 5 parts of nano-tin oxide, 5 parts of nano-cerium oxide, and 10 parts of white carbon black treated with silane coupling agent were added. Stir the glass rod and add 0.5 parts of platinum catalyst. After stirring, put it in a vacuum drying oven to remove foam, and then put it at room temperature for a period of time until the silicone rubber becomes an elastomer with a certain hardness. According to GB / T13477.6-2002 test the properties of the cured colloid: the elongation at break is 190%, and the tensile strength is 2.2MPa. The initial decomposition temperature is 423.1°C.

Embodiment 2

[0024] Weigh 100 parts of vinyl silicone rubber (viscosity 20000mPa·s), then add 40 parts of phenyldimethylsiloxy cage silsesquioxane dissolved in cyclohexane, stir with a glass rod to make it Mix well. Put it into a vacuum drying oven to vacuumize and defoam. Then, 0.2 parts of PC610 inhibitor, 5 parts of nano-tin oxide, 5 parts of nano-cerium oxide, and 10 parts of white carbon black treated with silane coupling agent were added. Stir the glass rod and add 0.5 parts of platinum catalyst. After stirring, put it in a vacuum drying oven to remove foam, and then put it at room temperature for a period of time until the silicone rubber becomes an elastomer with a certain hardness. According to GB / T13477.6-2002 test the properties of the cured colloid: the elongation at break is 210%, and the tensile strength is 2.9MPa. The initial decomposition temperature is 437.3°C.

[0025] From the above data, it can be seen that the present invention provides phenyldimethylsiloxy cage sil...

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Abstract

A phenyldimethylsiloxy cage-type silsesquioxane silicone rubber crosslinking agent and a preparation method thereof, relating to a rubber crosslinking agent and a preparation method thereof, the invention synthesizes a phenyldimethyl Silicone cage silsesquioxane silicone rubber crosslinker. First, it reacts phenyl tris (dimethylsiloxane) silane with vinyl trimethoxysilane to obtain phenyl tris (dimethylsiloxane) trimethoxysilane, and then prepares benzene by hydrolysis and condensation reaction. Dimethylsiloxy cage silsesquioxane, it can be used as a cross-linking agent for vinyl silicone rubber and silicone resin. Compared with ordinary cross-linking agents, this cross-linking Silicone rubber has high heat resistance temperature and good mechanical properties.

Description

technical field [0001] The invention relates to a rubber crosslinking agent and a preparation method thereof, in particular to a phenyldimethylsiloxy cage silsesquioxane silicone rubber crosslinking agent and a preparation method thereof. Background technique [0002] Silicone rubber is an elastomer made of linear polysiloxane as the main raw material, adding reinforcing materials, crosslinking agents and other compounding agents, and curing. The molecular chain of polysiloxane is composed of silicon atoms and oxygen atoms alternately. Silicon-oxygen bonds The bond energy is 443KJ / mol, while the C-C bond bond energy is 335KJ / mol, so silicone products have high thermal stability. For example, the strength of ordinary rubber decreases rapidly with the increase of temperature, while silicone rubber can almost be used permanently at 150°C. . , Compared with ordinary rubber, temperature resistance is one of the most prominent excellent properties of silicone rubber, so it is mos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/04C08G77/06
CPCC08G77/04C08G77/06
Inventor 葛铁军张瑾肖尚雄张煜新赵越
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY