Commonly used fluoroplastics are ETFE, FEP and PFA, and ETFE is the strongest fluoroplastic, commonly known as polyvinyl fluoride, referred to as F40. Fluoroplastic ETFE was first invented and produced by DuPont in the United States, mainly used in wire and cable, nuclear reactor cable Wires and parts for vehicles, industrial coatings, etc.
The English name of fluoroplastic ETFE is ethylene-tetra-fluoro-ethylene, and the Chinese name is ethylene-tetrafluoroethylene copolymer. Specific gravity: 1.7 g / cm3, molding shrinkage: 3.1-7.7%, molding temperature: 300-330 ° C.
Performance of fluoroplastic ETFE:
1. Long-term use temperature -80-180 degrees, excellent chemical resistance, corrosion resistance to all chemicals, the lowest friction coefficient among plastics, and good electrical properties, its electrical insulation is not affected by temperature Impact, known as "the king of plastic".
2, ETFE chemical resistance is similar to polytetrafluoroethylene, better than vinylidene fluoride.
3. The creep resistance and compressive strength of ETFE are better than PTFE, the tensile strength is high, and the elongation can reach 100-300%. Good dielectric properties and excellent radiation resistance.
Although the fluoroplastic ETFE has good processing and formability, balanced physical properties, good mechanical toughness, and excellent radiation resistance, but because its main temperature resistance is similar to that of FEP, Swell's fluoroplastic high-temperature wire with a temperature of 200 ℃ is mainly used FEP Material, chemical properties of FEP material are more due to ETFE.