PFA (tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer, also known as perfluoroalkylates, soluble polytetrafluoroethylene), this one you may be thinking of when mentioning pfa insulated wires. His origin is through continuous updating and innovation, and improvement to get. At the beginning is fluorine plastic was discovered, and then after scientists test and appear polytetrafluoroethylene (PTFE), after countless tests, and ultimately determined that PTFE has excellent flame retardant properties, stability, electrical insulation properties, mechanical properties, heat resistance, oil resistance, solvent resistance and abrasion resistance, etc., known as the 'king of plastics'.
However, PTFE has a high melt viscosity and is not easy to mould and process. To meet the market demand for processable fluoroplastics, scientists continued their research. In the 1970s, PFA was invented, which is a modified material of PTFE, by introducing perfluoroalkoxy in the molecular structure of PTFE, improving its cold flow and melt viscosity, so that it can be processed by conventional thermoplastic moulding methods.The invention of PFA has greatly expanded the scope of application of fluoroplastics. It not only maintains the excellent properties of PTFE, such as chemical resistance, high temperature resistance and electrical insulation, but also has good processing performance. These characteristics make PFA in the 260 ℃ high temperature use, is a kind of high temperature heat resistant wire, very suitable for the manufacture of heating wire and special wire. Its high temperature and stress-crack resistant properties make PFA wire perform well in heating systems, providing better insulation, convenient control and economy. In particular, PFA heating wire is more widely used in shorter pipe heating applications. In addition, PFA wires also play an important role in areas such as geothermal power generation due to their chemical resistance and low friction. Nowadays, pfa insulated wires are manufactured in a variety of types, there are silver copper cable, silicone insulated cable and also nickel plated wires, a variety of options.
