Fluororubber compound with low-temperature flexibility and high wear resistance, and preparation method thereof

Abstract

The invention relates to a fluororubber compound with low-temperature flexibility and high wear resistance, and a preparation method thereof, wherein the preparation raw materials of the compound comprise a main material and an auxiliary material, wherein the main material comprises a fluororubber modified low-temperature raw rubber, a fluororubber raw rubber and graphene master batch, the auxiliary agent is modified polyphenyl ester tetrafluoro powder, the fluororubber modified low-temperature raw rubber is a low-temperature raw rubber with a vulcanization point monomer, the modified polyphenyl ester tetrafluoro powder is obtained by modifying polyphenyl ester and tetrafluoro micro-powder in the presence of a silane coupling agent, and the graphene master batch is a graphene master batchtaking a ternary raw rubber as a basic raw rubber. According to the invention, the fluororubber compound rubber prepared by mixing and adding the modified raw rubber and the novel auxiliary agent according to a certain ratio through the special mixing method and the vulcanization process, so the low-temperature performance of the rubber material is improved, the wear resistance and the mechanicalproperty of the rubber material at a low temperature are improved, and the fluororubber compound rubber can be used as a low-temperature sealing material and can replace foreign products.

Description

Technical field [0001] The invention relates to the field of fluorine rubber preparation, in particular to a fluorine rubber compound rubber with low temperature flexibility and high wear resistance and a preparation method. Background technique [0002] In the rubber industry, fluorine rubber has unparalleled excellent properties than other rubbers. It is a new type of polymer material with excellent heat resistance, medium resistance and oil resistance, as well as good physical and mechanical properties, electrical insulation and radiation resistance. Sex, etc., known as the "king of rubber". It is widely used in automobile manufacturing, petrochemical industry, machinery manufacturing, aerospace, construction engineering and other fields. [0003] Vinylidene fluoride-hexafluoropropylene (VDF-HFP), vinylidene fluoride-chlorotrifluoroethylene (VDF-CTFE), vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene (VDF-HFP-TFE), four Vinyl fluoride (TFE)-perfluoro(alkyl vinyl eth...

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Problems solved by technology

[0006] Chinese patent CN103087450A is a rare earth complex modified cold-resistant fluororubber compound and its preparation method, which is composed of fluororubber raw rubber, rare earth complexes, acid absorbing agents, reinforcing fillers, vulcanizing agents, accelerators, etc. Cold-resistant fluororubber, which is characterized by good cold resistance, but does not mention the wear resistance under cold resistance

[0008] Chinese patent CN1919921, high hardness fluororubber compound with low temperature flexibility, proposed by polyfluoroolefin terpolymer, active magnesium oxide, ultrafine calcium oxide, benzyl triphenylphosphine chloride, fluorine wax, reinforcing agent , active agent, bisphenol AF, plasticizer, peroxide, cross-linking aid, etc., is a kind of low-temperature flexible high-hardness fluororubber compound, which can be used in the range of -45~250℃, but no special proposal is made Wear resistance

[0009] So far, no combination of excellent low temperature performance under wear conditions has been developed in the prior art

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