Various polymer products are widely used in modern medical treatment. These products are not only used in the human body and in contact with tissues in the human body, but also used in various equipment in the medical field.

Fluorinated ethylene propylene copolymer (perfluoroethylene propylene copolymer), English name is fluorinated ethylene propylene, referred to as FEP, commonly known as F46. FEP is a copolymer of tetrafluoroethylene (TPFE) and hexafluoropropylene. The melting point of FEP crystallization is 304 ℃, an