Fluorine silicone rubber, as a kind of special synthetic rubber with high performance, is widely used in many fields because of its excellent high temperature resistance, oil resistance, corrosion resistance and electrical insulation properties. In this paper, the characteristics, application and preparation of fluorosilicone rubber will be introduced.
First, the characteristics of fluorosilicone rubber
1. High temperature resistance: fluorosilicone rubber has excellent high temperature resistance and can work stably in the temperature range of -55 ° C to 200 ° C for a long time. Its limit operating temperature can even reach 250℃.
2. Oil resistance: fluorosilicone rubber has excellent permeability resistance to various oils, fuels and solvents, and can effectively prevent the erosion and penetration of oil products.
3. Corrosion resistance: fluorosilicone 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. Electrical insulation performance: fluorine silicone 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.
5. Physiological inertia: fluorosilicone rubber is friendly to biological tissues, non-toxic and tasteless, and can be used in sensitive areas such as medical equipment and human implants.
Second, the application of fluorosilicone rubber
Due to the above characteristics, fluorosilicone rubber has been widely used in many fields:
1. Aerospace: In the aerospace sector, fluorosilicone rubber is 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, fluorosilicone rubber is used to manufacture pipe seals, valve seals, pump seals, etc., to resist the erosion and penetration of various chemical substances.
3. Automobile manufacturing: In automobile manufacturing, fluorine silicone 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 silicone rubber is widely used because of its high electrical insulation properties.
5. Medical health: due to physiological inertia and good biocompatibility, fluorosilicone rubber is also widely used in the medical field, such as the manufacture of medical equipment such as catheters and cardiac pacemakers.
Third, the preparation of fluorosilicone rubber
The preparation of fluorosilicone rubber 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, after processing and molding, various shapes and specifications of fluorosilicone rubber products are prepared. In the preparation process, it is also necessary to add an appropriate amount of siloxane 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 silicone rubber is widely used in aerospace, petrochemical, automobile manufacturing and other fields because of its excellent high temperature resistance, oil resistance, corrosion resistance and electrical insulation properties. Understanding its characteristics, 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, fluorosilicone rubber will still play an important role in the future.
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