What is the difference between polytetrafluoroethylene and polyethylene？

Currently known as the “king of plastics”, polytetrafluoroethylene is one of the most corrosion-resistant materials in the world. Polytetrafluoroethylene is made by polymerization of tetrafluoroethylene, abbreviated as PTFE. Polytetrafluoroethylene because of its corrosion resistance, the main application field is the need to resist acid and alkali and organic solvent corrosion, and there is no toxic harm to the human body, but the ammonium perfluorooctanoate (PFOA) in its raw material is considered to be carcinogenic. Polytetrafluoroethylene is used as an engineering plastic, with the ability to work normally and for a long time at temperatures from +250 ° C to -180 ° C, and can tolerate all chemicals, except metallic sodium and liquid nitrogen.

Polyethylene（ PE ）is a kind of high temperature resistance, strong chemical stability, corrosion resistance, low water absorption, good electrical insulator, but the stress sensitive aging performance is poor.