Green low-temperature-resistant fluororubber as well as preparation method and application thereof

By using fluorine-free surfactant to replace PFOA, combined with fluorine-substituted olefin gas monomers and other raw materials, green low-temperature resistant fluoro-rubber raw rubber was prepared, which solved the brittleness of existing fluoro-rubber at low temperatures, avoided environmental pollution, and achieved green and environmentally friendly industrial production.

CN119708460AActive Publication Date: 2025-03-28四川道弘新材料股份有限公司
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Patent Information

Application Number
CN202510037147.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-09
Publication Date
2025-03-28
Estimated Expiration
2045-01-09

AI Technical Summary

Technical Problem

The existing fluoroelastomer has insufficient brittle temperature at low temperatures and cannot meet the needs of certain low-temperature working environments. The perfluorooctanoic acid and its derivatives used are difficult to degrade, which has environmental accumulation and negative impacts on organisms.

Method used

Fluorine-free surfactant is used to prepare green low-temperature fluoro-rubber raw rubber by acid anhydride compounds, fatty alcohol polyoxyethylene ethers, bisulfite and alkaline catalysts as raw materials. Instead of PFOA, combined with fluorine-substituted olefin gas monomers, initiators and chain transfer agents, green low-temperature resistant fluoro-rubber raw rubber is prepared.

Benefits of technology

It significantly enhances the low temperature resistance of fluoroelastomer, while avoiding the environmental hazards of using PFOA, and achieves green and environmentally friendly industrial production.

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Abstract

The invention belongs to the technical field of chemical production, and particularly relates to green low-temperature-resistant fluororubber as well as a preparation method and application thereof. The fluororubber is prepared by replacing perfluorooctanoic acid (PFOA) with the novel fluorine-free surfactant, the mechanical property of the fluororubber is equivalent to that of 246 type fluororubber produced by using PFOA, and meanwhile, the low-temperature resistance of the fluororubber is obviously enhanced. The use of PFOA is avoided, industrial production of the green low-temperature-resistant fluororubber is facilitated, and the fluororubber has a good application prospect.
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