Fluororubber compound and preparation method thereof

Abstract

The invention relates to the field of rubber, in particular to a fluororubber compound. The fluororubber compound is prepared from the following raw material components in parts by weight: 100 parts of raw fluororubber, 15 to 30 parts of carbon black filler, 10 to 20 parts of modified silica filler and 2.3 to 4 parts of vulcanizing agent, wherein the fluororubber is a mixture of ternary raw rubberand binary raw rubber; the ternary raw rubber is vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene or vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene-csm; the binary raw rubberis vinylidene fluoride-hexafluoropropylene or vinylidene fluoride-hexafluoropropylene-csm. The compound has wider temperature tolerant range and good tolerance to novel fuel or additive, and can be widely applied to sealing products for automobiles, spaceflight, chemical machines and the like.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a fluorine rubber compound and a preparation method. Background technique [0002] In the modern industrial field, sealing technology plays a pivotal role, and it is the key to guarantee the performance of hydraulic and pneumatic systems. Once the sealing material fails, it will not only increase the subsequent maintenance cost, but also may lead to a fatal disaster. Material performance is the decisive factor for the performance of sealing products. In recent years, the use conditions of rubber seals have become increasingly severe, and the working conditions have become more and more severe. On the one hand, with the increasing requirements for sealing materials required for aerospace equipment, the Both high and low temperature have broken through the limit of the original working conditions, and the temperature range of the seal is wider; on the other hand, the media and addi...

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Problems solved by technology

[0004] Chinese patent CN104356562A is a kind of fluorine rubber compound rubber and its preparation method. A kind of compound rubber composed of a vulcanizing agent, a vulcanization aid and a low-temperature modifier and its preparation method. The patent only mentions the consideration of low-temperature performance and fuel resistance performance, and does not point out that it has both high-temperature performance and new-type fuel performance.

[0005] So far, in the prior art, there has not been developed a sealing product that can replace the imported fluororubber compound as a higher requirement

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