Fluorine rubber, as a kind of special synthetic rubber with high performance, is widely used in various fields because of its excellent high temperature resistance, oil resistance, corrosion resistance and oxidation resistance. In this paper, the properties, applications and preparation of fluorine rubber will be introduced.
First, the performance of fluorine rubber
1. High temperature resistance: fluororubbers have excellent high temperature resistance and can work stably in the temperature range of -55 ° C to 250 ° C for a long time, and some fluororubbers can even work at temperatures up to 300 ° C.
2. Oil resistance: fluorine rubber has excellent permeability resistance to various oils, fuels and solvents, which can effectively prevent the erosion and penetration of oil products.
3. Corrosion resistance: fluorine rubber has very high corrosion resistance to strong acids, strong alkalis and various organic solvents, making it an ideal material in a highly corrosive environment.
4. Oxidation resistance: fluorine rubber has excellent oxidation resistance, is not easy to be destroyed by oxidants such as ozone, long service life.
5. Electrical insulation performance: fluorine rubber has high electrical insulation performance, suitable for high voltage insulation field. Its dielectric constant and dielectric loss are low, and it can maintain stable electrical properties.
6. Mechanical properties: fluorine rubber has excellent mechanical properties, such as high elasticity, low compression permanent deformation, so that it can still maintain good sealing performance under various dynamic conditions.
Second, the application of fluorine rubber
Due to the above excellent properties, fluororubbers have been widely used in many fields:
1. Aerospace: In the aerospace sector, fluororubbers are used to manufacture components such as seals, gaskets and connectors for aircraft and satellites to cope with extreme temperatures and environmental conditions.
2. Petrochemical: In the petrochemical industry, fluorine rubber is mainly used in the manufacture of pipeline seals, valve seals, pump seals, etc., to resist the erosion and penetration of various chemical substances.
3. Automobile manufacturing: In automobile manufacturing, fluorine rubber is mainly used in engine seals, fuel tank sealing materials and gas cylinder pressure seals, etc., to improve the durability and safety of automobiles.
4. High voltage insulation: In the field of high voltage insulation, such as cable insulation layer and transformer coil insulation materials, fluorine rubber is widely used because of its high electrical insulation properties.
5. Biomedicine: Due to physiological inertia and good biocompatibility, fluororubbers are also widely used in the medical field, such as the manufacture of medical devices such as catheters and cardiac pacemakers.
Third, the preparation of fluorine rubber
The preparation of fluororubbers is mainly by polymer synthesis. Commonly used polymer monomers include tetrafluoroethylene, vinylidene fluoride, trifluorochloroethylene and other fluorinated monomers. These monomers can be polymerized into linear or cross-linked polymers by emulsion polymerization, suspension polymerization or solution polymerization. Finally, fluororubber products of various shapes and specifications are prepared through processing and molding. In the preparation process, it is also necessary to add an appropriate amount of fluosilane coupling agent, filler, plasticizer and other additives to adjust its physical and mechanical properties and processing properties.
Fourth. Summary
As a kind of high-performance special synthetic rubber, fluorine rubber is widely used in aerospace, petrochemical, automobile manufacturing and other fields because of its excellent high temperature resistance, oil resistance, corrosion resistance and oxidation resistance. Understanding its properties, applications and preparation helps to better leverage its advantages and promote the development of related industries. With the continuous progress of science and technology and the expansion of application fields, fluorine rubber will still play an important role in the future.
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