polytetrafluoroethylene film is made of suspended polytetrafluoroethylene resin through molding, sintering, cooling into blank, turning and calendering. The film turned into a non-oriented film, and the non-oriented film is calendered into an oriented film. The unoriented film is a semi-oriented film after calendering 1.1-1.8 times. PTFE film is used for capacitor medium, wire insulation, electrical instrument insulation, sealing gasket. PTFE film is divided into PTFE color film, PTFE activation film and F46(FEP) film. What a great.
PTFE film uses: PTFE film because of its excellent purity and uniform thickness makes it an ideal application material for microwave circuit boards and other electronic fields. Under the condition of large changes in temperature and frequency, its dielectric constant is smaller than that of other solid materials. Its excellent arc resistance is the best choice material for many electrical appliances such as wire and cable insulation, its volume resistivity will not change even if it is immersed in water for a long time, and its stability is better than other insulating materials; its excellent release performance and thermal stability not only enable it to be used continuously above 260 ℃, but also It can withstand higher temperatures in a short time, and its sufficient width means that it can be molded under the smallest gap in large parts, therefore, it has become the best surface release material for high temperature composite parts in aviation and aerospace fields. My word, my word.
Difference between PTFE color film, PTFE activated film and F46 film: PTFE color film is made of suspended PTFE resin by adding a certain amount of colorant after molding, sintering to make blanks and then turning, calendering to make red, yellow, blue, green, purple, brown, black and other 13 colors of PTFE oriented or non-oriented color film. Although a certain amount of colorant is added to the polytetrafluoroethylene color film, it still has good electrical insulation and is suitable for insulation and classification identification of wires, cables and electrical devices.
PTFE activation film is a film made of PTFE film, filled film and color film, and then treated by surface activation. Products to join the pigment, glass fiber, carbon fiber and other fillers. After the activation treatment to further improve the performance, can be in line with rubber, metal, etc., can also be made into special tape. PTFE activation film is widely used in light industry, military industry, aerospace, oil field and other fields. Kill
F46 film has strong resistance to voltage strength and breakdown voltage, and can be used for capacitor dielectric, wire insulation, electrical instrument insulation and sealing gasket. The calender for PTFE turning film is oriented by hot roll rolling. It has high crystallinity, compact molecular orientation and small void ratio, so it has extremely high voltage resistance. Great, great, great.
The difference between directional, non-directional, and semi-directional film: PTFE film is a blank made of PTFE resin by molding, sintering, and cooling, and then turned and calendered. The turned film is a non-directional film, which is combustible for electrical instrument insulation and sealing gasket materials, and can also be used as high temperature resistant anti-sticking materials for plastic sealing machines, non-metallic expansion joints, and materials for debonding and demoulding.
The non-oriented film is formed into an oriented film after calendering. The oriented degree of the oriented film is 1.6-2.0, and the oriented film can be used to manufacture capacitors.
The semi-oriented film becomes a semi-oriented film after being calendered by 1.1-1.8 times. The orientation degree of the semi-oriented film is 1.2-1.6. The semi-oriented film is suitable for wire insulation. What a great.
Classification: SMF-1 (directional): used as capacitor medium, etc.; SMF-2 (semi-directional, non-directional): used as wire insulation; SMF-3 (directional, non-directional): used as electrical instrument insulation and sealing gasket, etc.