Teflon parts are divided into: molded parts with simple shape and low dimensional accuracy made by PTFE resin and PTFE filled modified resin molding method, and molded parts with PTFE substrate and PTFE filled modified substrate, using secondary mechanical processing means to make complex PTFE parts with high dimensional accuracy, which are difficult to complete by molding method.
PTFE film is divided into three categories: non-oriented film, semi-oriented film and oriented film. PTFE film is a product made of PTFE suspension resin by molding and sintering to make blanks, and then turning or turning after calendering and directional stretching process.
PTFE filled modified products are made of PTFE suspension resin and a certain amount of modified filler after high-speed mixing and molding by high-temperature sintering. After modification of PTFE, other excellent properties remain unchanged, greatly improving its poor mechanical properties (such as: compressive strength, hardness) and not wear-resistant, easy cold flow performance. Commonly used modified fillers include carbon fiber, graphite, molybdenum disulfide, glass fiber, bronze powder, high molecular polymer, etc.
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