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A kind of silicone rubber containing phenyl trisilyl cage silsesquioxane

A technology of phenyltrisilyl cage and silsesquioxane, which is applied in the field of silicone rubber, can solve problems such as low compatibility and development obstacles, and achieve high heat resistance and mechanical properties

Active Publication Date: 2019-07-05
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the cross-linking agent of traditional phenyl silicone rubber products, the phenyl trisilyl cage silsesquioxane silicone cross-linking agent can make the cross-linked silicone rubber products have higher The heat resistance and mechanical properties of POSS-cage silsesquioxane, which is more popular at present, are used as the cross-linking agent of phenyl-containing high-performance silica gel, which makes it difficult to use due to its low compatibility. Development is hindered

Method used

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  • A kind of silicone rubber containing phenyl trisilyl cage silsesquioxane
  • A kind of silicone rubber containing phenyl trisilyl cage silsesquioxane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 100 parts of methyl phenyl vinyl silicone oil (viscosity is 30200mPa s, the mass fraction of phenyl is 55%, the mass fraction of vinyl is 3.6%), 4 parts of nano-tin oxide, 0.5 part of Karstedt platinum catalyst (5000ppm), mechanical stirring Mix well, then stir with a planetary mixer for 2 hours, and finally remove water under vacuum at 100 °C for 5 hours. Then add 37.8 parts of phenyltrisilyl cage silsesquioxane organosilicon cross-linking agent (dissolved in toluene solution of the same quality), mix well and remove toluene in the system under low pressure; heat treatment at 100 ° C for 4 hours after can be fully cured. The properties of the cured colloid were tested according to GB / T 13477.6-2002: the elongation at break was 231%, and the tensile strength was 3.9Mpa. The initial decomposition temperature was 451.2 °C.

Embodiment 2

[0037] 100 parts of methyl phenyl vinyl silicone oil (viscosity 30200mPa·s, phenyl mass fraction of 55%, vinyl mass fraction of 3.6%), 4 parts of nano-tin oxide, 5 parts of nano-cerium oxide, 0.5 parts of Karstedt platinum catalyst (5000ppm), mechanically stirred and mixed evenly, then stirred with a planetary mixer for 3 hours, and finally dewatered at 100 °C for 5 hours. Then add 37.8 parts of phenyltrisilyl cage silsesquioxane organosilicon cross-linking agent (dissolved in toluene solution of the same quality), mix well and remove toluene in the system under low pressure; heat treatment at 100 ° C for 4 hours after can be fully cured. The properties of the cured colloid were tested according to GB / T 13477.6-2002: the elongation at break was 214%, and the tensile strength was 3.5Mpa. The initial decomposition temperature was 477.4°C.

Embodiment 3

[0039] 100 parts of methylphenyl vinyl silicone oil (viscosity 15000mPa s, phenyl mass fraction of 25%, vinyl mass fraction of 1.8%), 4 parts of nano-tin oxide, 0.5 part of Karstedt platinum catalyst (5000ppm), mechanical stirring Mix well, then stir with a planetary mixer for 2 hours, and finally remove water under vacuum at 100 °C for 5 hours. Then add 18.5 parts of phenyltrisilyl cage silsesquioxane organosilicon cross-linking agent (dissolved in toluene solution of the same quality), mix well, remove toluene in the system under low pressure; heat treatment at 80 ° C for 2 hours can be fully cured. The properties of the cured colloid were tested according to GB / T 13477.6-2002: the elongation at break was 234%, and the tensile strength was 2.8Mpa. The initial decomposition temperature was 415.9°C.

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Abstract

A silicone rubber containing phenyl trisilyl cage silsesquioxane, relates to a silicone rubber, the silicone rubber is composed of the following components in parts by weight: 100 parts of methylphenyl vinyl silicone oil; 10-80 parts of phenyl hydrogen-containing crosslinking agent; 1-20 parts of metal oxide; 0.1-5 parts of catalyst. Methylphenyl vinyl silicone oil, the viscosity is 15000 mPa·s~50000 mPa·s, the mass fraction of phenyl is 5%~55%, and the mass fraction of vinyl is 0.1%~5%. The present invention introduces molecules containing benzene rings and silicon-hydrogen bonds into the POSS structure, making it a cross-linking agent for methyl phenyl vinyl silicone rubber. Compared with traditional phenyl silicone rubber products, silicone rubber containing phenyl trisilyl cage silsesquioxane has higher heat resistance and mechanical properties. After adding heat-resistant additives, the thermal decomposition temperature is 400 ℃ or more.

Description

technical field [0001] The present invention relates to a kind of silicone rubber, in particular to a kind of silicone rubber containing phenyltrisilyl cage type silsesquioxane. Background technique [0002] Methylphenylvinyl silicone rubber refers to a part of the main chain of silicon atoms connected with a dimethyl group and another part with a methyl group and a phenyl group. Its special chemical structure gives it a series of excellent properties and has been widely used. It is used in various fields such as LED packaging materials, high temperature resistant coatings, thermally conductive adhesives, electronic appliances, light industrial textiles, building materials and so on. With the continuous expansion of its application field, the traditional phenyl silicone oil has been unable to meet the increasingly demanding requirements. Therefore, it is urgent to develop a silicone rubber with high temperature resistance and high shear strength. [0003] In the present in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08K3/22
CPCC08K2201/003C08K2201/011C08L83/04C08L2201/08C08L2205/025C08L2205/03C08K2003/2265C08K2003/2231C08K2003/2241C08K2003/2296C08K2003/2213
Inventor 葛铁军肖尚雄王佳张瑾张煜新赵越
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY