The difference between PTFE and PVDF

PTFE and PVDF are two different polymer materials, and they have certain differences in chemical structure, physical properties and application fields.

Chemical structure: The chemical name of PTFE is polytetrafluoroethylene. It is a linear polymer material without polar functional groups. It has excellent corrosion resistance, high temperature resistance and low friction coefficient. The chemical name of PVDF is polyvinylidene fluoride, which is a linear polymer material with polar functional groups. It has excellent corrosion resistance, high temperature resistance, radiation resistance and insulation.

Physical properties: PTFE is white powder at room temperature, not easy to melt, has low friction coefficient and excellent wear resistance. PVDF is a colorless and transparent crystal with high hardness and strength, as well as high dielectric constant and low-temperature bending performance.

Application fields: Because PTFE has excellent corrosion resistance and high temperature resistance, it is widely used in chemical industry, electronics, aerospace, medical and other fields, such as PTFE braided hose, sealing gasket, high temperature pipeline and other products. PVDF is mainly used in electrical, electronic, medical and biotechnology fields, such as wire and cable, semiconductor devices, medical pipelines and other products.

Generally speaking, PTFE and PVDF are both high-performance polymer materials. They have certain differences in application fields and characteristics, and it is necessary to choose the appropriate material according to the specific use environment and requirements.