The PTFE material has a small surface tension of * in a solid material, does not adhere to any substance, and has excellent properties of high and low temperature resistance, so that it is widely used in the anti-sticking such as the manufacture of a non-stick pan. The anti-sticking process mainly includes two types: mounting a PTFE member or a sheet on a substrate, and thermally shrinking the PTFE coating or the glass-bonded varnish onto the substrate.
With the continuous development of material application technology, the three major shortcomings of PTFE materials: cold flow, difficult weldability, and difficult melt processing are gradually being overcome, thus making it impervious to optical, electronic, medical, petrochemical oil transportation, etc. The application prospects in various fields are broader.
PTFE has outstanding excellent comprehensive properties, high temperature resistance, corrosion resistance, non-stick, self-lubricating, excellent dielectric properties and low friction coefficient. Used as engineering plastics, it can be made into PTFE tubes, rods, strips, plates, films, etc. Generally used in corrosion-resistant pipes, containers, pumps, valves, and radar, high-frequency communication equipment, radio equipment, etc. with high performance requirements. Adding any filler that can withstand the sintering temperature of PTFE in PTFE can greatly improve its mechanical properties. At the same time, maintain other excellent properties of PTFE. Filled varieties include glass fiber, metal, metal oxide, graphite, molybdenum disulfide, carbon fiber, polyimide, EKONOL, etc. The wear resistance and ultimate PV value can be increased by 1000 times.
The PTFE pipe is made by using a suspension polymerization polytetrafluoroethylene resin through a plunger extrusion process. In the known plastics, polytetrafluoroethylene has * chemical resistance and dielectric properties. Teflon braided packing is a good dynamic sealing material. It is woven from expanded polytetrafluoroethylene strips. Teflon braided packing is a good dynamic sealing material.