With the progress of high and new technology and the continuous development of material science, in the modern electronic system, the required signal propagation speed is faster and faster, the electronic component volume is smaller and lighter, the material and process put forward higher requirements, the service life of electronic equipment depends on its insulation system, in the process of use, Insulation materials may be under mechanical load, thermal load and harsh environment. This requires that these materials not only have long-term heat resistance, but also good electrical insulation properties. The new high-performance special plastics have light weight, high specific strength, stable chemical properties, good electrical insulation and heat resistance, and have the characteristics of shock absorption, wear resistance, corrosion resistance and easy processing and forming. It can be said that the electronic and electrical field has been inseparable from plastics. For example, fluorinated plastics (FEP, PFA) can be used in some electronic components or power systems with high output power because of their high and low temperature resistance and corrosion resistance.