How is high-performance PTFE processed?

PTFE and carbon fiber are not the same material. PTFE is a fluorine-containing plastic, abbreviated in English as PTFE, also called Teflon, Teflon, etc. Because of its excellent performance in all aspects, it is also used. Called the King of Plastics. PTFE has excellent properties such as corrosion resistance, high and low temperature resistance, non-toxicity, excellent insulation, anti-aging, high lubrication, etc., but it also has many properties that need to be improved, such as creep, non-stick, wear resistance, wire Peng expansion compression, hardness and so on. In order to further improve these properties of polytetrafluoroethylene, corresponding other substances can be added to the raw material of polytetrafluoroethylene in proportion, such as molybdenum disulfide, glass fiber, graphite, polystyrene grease, glass fiber, metal powder, etc. Among them, adding carbon fiber is a common method for modifying PTFE products. The role of carbon fiber filling PTFE is to increase the creep resistance, load resistance, wear resistance, dimensional stability, and resistance of PTFE. tensile strength and other properties.

       Carbon fiber (English carbon fiber, CF for short) is a new type of fiber material with high strength and high modulus with a carbon content of more than 95%. It is a microcrystalline graphite material obtained by carbonization and graphitization by stacking organic fibers such as flake graphite microcrystals along the fiber axial direction. Carbon fiber is "soft on the outside and rigid on the inside", which is lighter than metal aluminum, but stronger than steel, and has the characteristics of corrosion resistance and high modulus. It is an important material in national defense, military industry and civilian use. It not only has the inherent intrinsic properties of carbon materials, but also has the soft processability of textile fibers. It is a new generation of reinforcing fibers. Carbon fiber has many excellent properties. Carbon fiber has high axial strength and modulus, no creep, good fatigue resistance, specific heat and electrical conductivity between non-metal and metal, and good electromagnetic shielding.

Small thermal expansion coefficient, good corrosion resistance, low fiber density, good X-ray transmittance, light weight, ultra-high temperature resistance in non-oxidizing environment, etc. Compared with traditional glass fiber, the Young's modulus of carbon fiber is more than 3 times; compared with Kevlar fiber, the Young's modulus is about 2 times. Excellent corrosion resistance. The addition of carbon fiber greatly improves the bearing capacity of the composite material. When PTFE is added to the carbon fiber as a filler material, a small amount of graphite is also added. The addition of graphite reduces the friction coefficient between the surface of the carbon fiber and the pair, thereby reducing the carbon fiber. The tendency of falling off, Improve the wear resistance of composite materials.