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Addition type fluorosilicone rubber and preparation method thereof

A fluorosilicone rubber and addition molding technology, which is applied in the field of addition fluorosilicone rubber and its preparation, can solve the problems of influence on mechanical properties, low yield, etc., and achieves good descriptiveness, excellent comprehensive performance, and better stability of rubber performance. Effect

Inactive Publication Date: 2020-02-11
宁波泰意德过滤技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vinyl group of the addition-type liquid fluorosilicone rubber is located in the molecular chain segment, which is different from the crosslinking effect of the terminal vinyl group, which has a certain impact on the mechanical properties of the product.
In addition, due to the different ring-opening activities of the raw materials, the tetramethylammonium hydroxide alkali gel catalyst plays a balancing role in the reaction during the polymerization process, resulting in a very low yield of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of addition type fluorosilicone rubber, comprising the steps of:

[0029] Step S1, reinforcement of hydrogen-terminated polyphenyl-(dimethylsiloxy)siloxane: 8 kg of hydrogen-terminated polyphenyl-(dimethylsiloxy)siloxane and hydrogen Mix 1 kg of silsesquioxane and knead under vacuum at 130°C for 4 hours to form a uniformly mixed mixture; then the obtained mixture is kneaded for 3 minutes at a roller temperature of 120°C through an open mill to obtain reinforcement Hydrogen-terminated polyphenyl-(dimethylsiloxy)siloxane;

[0030] Step S2, refining of polydimethylvinylsiloxane: put 10kg of polydimethylvinylsiloxane into the internal mixer, stir for 10 minutes, and then put 1,1,1- Tris(4-trifluorovinyloxyphenyl)ethane 2kg, silane coupling agent KH5500.1kg, blast furnace slag powder 1kg, heat up and mix rubber for 1 hour, then put the obtained rubber into the open mill and knead evenly , to obtain open-mixing rubber; the temperature of the heating-up ...

Embodiment 2

[0035] A preparation method of addition type fluorosilicone rubber, comprising the steps of:

[0036] Step S1, reinforcement of hydrogen-terminated polyphenyl-(dimethylsiloxy)siloxane: 9 kg of hydrogen-terminated polyphenyl-(dimethylsiloxy)siloxane and hydrogen Mix 1 kg of silsesquioxane, knead under vacuum at 135°C for 5 hours to form a uniformly mixed mixture; then, the obtained mixture is kneaded for 3.5 minutes at a roller temperature of 130°C through an open mill to obtain reinforcement Hydrogen-terminated polyphenyl-(dimethylsiloxy)siloxane;

[0037] Step S2, refining of polydimethylvinylsiloxane: put 10kg of polydimethylvinylsiloxane into the internal mixer, stir for 11 minutes, and then put in 1,1,1- Three (4-trifluorovinyloxyphenyl) ethane 2kg, silane coupling agent KH5600.15kg, steel slag powder 1kg, heat up and mix rubber for 1.2 hours, and then put the rubber material obtained into an open mill and knead evenly. Obtain open-mix rubber; the temperature of the heatin...

Embodiment 3

[0042] A preparation method of addition type fluorosilicone rubber, comprising the steps of:

[0043] Step S1, reinforcement of hydrogen-terminated polyphenyl-(dimethylsiloxy)siloxane: 10 kg of hydrogen-terminated polyphenyl-(dimethylsiloxy)siloxane and hydrogen Mix 1 kg of silsesquioxane, knead in vacuum at 140°C for 5.5 hours to form a uniformly mixed material; then run the obtained mixed material through an open mill at a roller temperature of 135°C for 4 minutes to obtain reinforcement Hydrogen-terminated polyphenyl-(dimethylsiloxy)siloxane;

[0044] Step S2, refining of polydimethylvinylsiloxane: Put 10kg of polydimethylvinylsiloxane into the internal mixer, stir for 13 minutes, and then put 1,1,1- Tris(4-trifluorovinyloxyphenyl)ethane 2kg, silane coupling agent KH5700.2kg, fly ash powder 1kg, heat up and mix rubber for 1.5 hours, then put the obtained rubber material into the open mill for kneading Uniformly, to obtain the open rubber; the temperature of the heating ru...

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Abstract

The invention provides an addition type fluorosilicone rubber. The preparation steps comprise: S1, reinforcing of hydrogen-terminated polyphenyl-(dimethylsiloxy) siloxane; S2, open milling of polydimethylvinylsiloxane; S3, cross-linking mixing, and S4, curing. The invention further provides a preparation method of the addition type fluorosilicone rubber. According to the invention, the preparationmethod is simple and easy to implement, free of flash, high in precision, short in production period and suitable for large-scale production; and the prepared addition type fluorosilicone rubber is completely vulcanized and has excellent basic properties and excellent mechanical properties.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to an addition-type fluorosilicone rubber and a preparation method thereof. Background technique [0002] In today's world, the field of rubber materials is booming. As one of the stars in the field of rubber materials, fluorosilicone rubber is promoting the development of the field of rubber materials with its unique charm. This rubber material not only has the superior high and low temperature resistance of traditional silicone materials (-60℃~310℃), superior physical and mechanical properties, aging resistance and self-extinguishing at high temperature, also has excellent thermal stability of traditional fluorocarbon materials, extremely superior oil resistance and solvent resistance. Addition-type fluorosilicone rubber is a typical representative of fluorosilicone rubber. It has excellent electrical insulation properties, aging resistance, good elasticity, rapid and con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/05C08L83/08C08L83/10C08K11/00C08J3/24C08G77/44
CPCC08G77/44C08J3/246C08J2383/05C08J2483/08C08L83/04C08L2205/025C08L2205/035C08L2312/00C08L83/08C08L83/10C08K11/005
Inventor 赵金燕
Owner 宁波泰意德过滤技术有限公司
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