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Low temperature-resistant fluororubber and preparation method thereof

A fluororubber and low temperature resistant technology, applied in the field of low temperature resistant fluororubber and its preparation, can solve the problems of poor dispersibility and adhesion performance, achieve remarkable low temperature resistance, improve fluidity and adhesion performance, and improve vulcanization performance and strength effects

Inactive Publication Date: 2018-09-28
镇江科特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The special performance of fluororubber is determined by the structural characteristics of fluorine atoms in its molecules, but it is precisely because of this structural characteristic that its dispersion and bonding performance are poor, which gives fluororubber some shortcomings in performance. Various researches have been done on the improvement of fluorine rubber

Method used

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  • Low temperature-resistant fluororubber and preparation method thereof
  • Low temperature-resistant fluororubber and preparation method thereof
  • Low temperature-resistant fluororubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix 4 parts of pigment, 5 parts of magnesium oxide, 15 parts of silica filler and 6 parts of triallyl isocyanurate accelerator to obtain mixture A; mix 10 parts of alcohol release agent (WS280) and double Mix 7 parts of phenolic AF vulcanizing agent uniformly to obtain mixture B; finally, add 70 parts of obtained mixture A, mixture B and modified fluororubber raw rubber to water (the amount of water added is 0.5 times the total mass of the material) and stir at 240 ° C, and then Take it out and let it cool naturally.

Embodiment 2

[0024] Mix 2 parts of pigment, 3 parts of magnesium oxide, 10 parts of silica filler and 5 parts of triallyl isocyanurate accelerator to obtain mixture A; mix 15 parts of alcohol release agent (WS280) and double Mix 10 parts of phenolic AF vulcanizing agent uniformly to obtain mixture B; finally, add 80 parts of obtained mixture A, mixture B and modified fluororubber raw rubber to water (the amount of water added is 0.6 times of the total mass of the material) and stir at 250 ° C, and then Take it out and let it cool naturally.

Embodiment 3

[0026] Mix 5 parts of pigment, 6 parts of magnesium oxide, 20 parts of silica filler and 10 parts of triallyl isocyanurate accelerator to obtain mixture A; mix 10 parts of alcohol release agent (WS280) and double Mix 5 parts of phenolic AF vulcanizing agent uniformly to obtain mixture B; finally, add 65 parts of obtained mixture A, mixture B and modified fluororubber raw rubber to water (the amount of water added is 0.3 times of the total mass of the material) and stir evenly at 200 °C, and then Take it out and let it cool naturally.

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Abstract

The invention discloses low temperature-resistant fluororubber and a preparation method thereof. The fluororubber comprises 65-80 parts of modified fluororubber raw rubber, 10-20 parts of a silica filler, 10-15 parts of an alcohol mould release agent, 5-10 parts of a bisphenol AF vulcanizing agent, 5-10 parts of a triallyl isocyanurate promoter, 3-6 parts of magnesium oxide and 2-5 parts of pigment, and the preparation method comprises the steps of: mixing the pigment, magnesium oxide, silica filler and triallyl isocyanurate promoter uniformly to obtain a mixture A, then mixing the alcohol mould release agent with the bisphenol AF vulcanizing agent uniformly to obtain a mixture B, finally mixing water with the mixture A, mixture B and modified fluororubber raw rubber, stirring the obtainedmixture well at 200-250 DEG C, then taking out the stirred mixture, and performing natural cooling to obtain the low temperature-resistant fluororubber. By adopting the bisphenol AF as a vulcanizingagent, silica as a filler and the novel mould release agent WS280, the fluidity and adhesion property of the fluororubber can be improved effectively at the same time, the vulcanization property and strength of the fluororubber are improved, and the prepared fluororubber has remarkable low temperature resistance.

Description

technical field [0001] The invention relates to a low-temperature-resistant fluororubber and a preparation method thereof, belonging to the field of fluororubber preparation. Background technique [0002] In the rubber industry, fluorine rubber has excellent properties unmatched by other rubbers, such as high temperature resistance, oil resistance, corrosion resistance to various strong acids and alkalis and chemicals, resistance to ozone and various oxidants, and radiation resistance. Fluorine rubber has been widely used in military aerospace, petrochemical, machinery manufacturing, construction engineering, instrumentation and automobile manufacturing and other fields. The special performance of fluororubber is determined by the structural characteristics of fluorine atoms in its molecules, but it is precisely because of this structural characteristic that its dispersion and bonding performance are poor, which gives fluororubber some shortcomings in performance. Various s...

Claims

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Application Information

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IPC IPC(8): C08L27/12C08K13/02C08K3/36C08K5/3492C08K5/136C08K3/22
CPCC08K13/02C08K3/22C08K3/36C08K5/136C08K5/34924C08K2003/222C08L27/12
Inventor 吴雯钰吴锁芳章雷
Owner 镇江科特新材料有限公司
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