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PTFE Sheet Introduce:
PTFE sheet is great material for high-temperature and low-friction applications. It has a number of advantages that make it a good choice:
(1) Its coefficient of friction is the third-lowest of any known solid material;
(2) It has excellent dielectric properties and is suitable for use as a material for printed circuit boards used at microwave frequencies;
(3) PTFE sheet is one of the most thermally stable plastic materials displaying no appreciable decompositions at 260°C and retaining most of its properties;
(4) Its high melting temperature makes it a good choice as a high-performance substitute for the weaker and lower melting point polyethylene that is commonly used in low-cost applications.
 
PTFE Sheet Purpose:
Owing to its low friction, PTFE sheet is used for applications where sliding action of parts is needed such as plain bearings, slide plates, etc. In these applications, it performs significantly better than nylon and acetal and it is comparable to UHMWPE, although not as resistant to wear. It’s extremely high bulk resistivity makes it an ideal material for fabricating long-life electrets, which are useful devices being the electrostatic analogues of magnets. In optical radiometry, sheets made from PTFE are used for measuring heads in spectroradiometers and broadband radiometers (e.g., luminance meters and UV radiometers) due to its capability to diffuse a transmitting light nearly perfectly.PTFE sheets have high corrosion resistance and used in laboratory environments as containers for materials such as fluoroantimonic acid.