-Material ：PTFE Polytetrafluoroethylene。

-Polytetrafluoroethylene (PTFE), commonly known as "plastic king", is a polymer compound polymerized from tetrafluoroethylene, which has excellent chemical stability, corrosion resistance, sealing performance, high lubrication, non adhesion, electrical insulation and good anti-aging resistance. Used as engineering plastic, it can be made into polytetrafluoroethylene pipes, rods, belts, plates, films, etc. Generally used in corrosion-resistant pipelines, containers, pumps, valves with high performance requirements, as well as radar, high-frequency communication equipment, wireless electrical materials, etc。
- The film is made of suspended PTFE resin by molding, sintering, cooling into a blank, and then turned and calendered. The turned film is non-directional, and the non-directional film is stretched and oriented at high temperature to change its internal structure, which makes the film have better physical properties and processing performance, and after calendering, it becomes directional film 。         
-Turning film(Non-Orientation Film) is characterized by smooth surface, can be aluminized, electroplated, printed and other subsequent processing treatment, suitable for making all kinds of packaging materials and stationery products. Orientation film is characterized by good strength, stiffness and thermal stability, and is suitable for the production of high-demand products, such as plastic shells for electronic products, automobile interior materials, and so on。
-Polytetrafluoroethylene film performance characteristics：
1. High temperature resistance: the use of working temperature up to 260 ℃.
2. Low temperature resistance: it has good mechanical toughness; even if the temperature drops to -196℃, the elongation of 5% can be maintained.
3. Corrosion resistance: to most chemicals and solvents, showing inertia, resistance to strong acids and alkalis, water and various organic solvents.
4. Climate resistance: it has the best aging life among plastics.
5. High lubrication: the lowest coefficient of friction among solid materials.
6. Non-adhesion: It has the smallest surface tension among solid materials and does not adhere to any substance.
7. Non-toxic: physiologically inert, no adverse reaction as artificial blood vessels and organs implanted in the body for a long time.
8. Electrical insulation: can resist 1500 volts high voltage electricity.
Polytetrafluoroethylene film (PTFE) unique properties make it in the chemical industry, petroleum, textile, food, paper, medicine, electronics and machinery and other industries and marine operations have a wide range of applications. Example:

1, in electrical and electronic applications
Polytetrafluoroethylene film (PTFE) material inherent low loss and small dielectric constant so that it can be made into enameled wire for micro-motors, thermocouples, control devices, capacitors, radio insulating liner, insulated cables, motors and transformers, etc.; the use of fluorine plastics at high temperatures and high pressures under the occurrence of the phenomenon of polar deviation of the electric charge characteristics of the manufacture of microphones, loudspeakers, robotic parts, etc.; the use of low refractive index characteristics, the manufacture of optical fiber. The use of its low refractive index characteristics, the manufacture of optical fiber。

2, the application of corrosion resistance
Polytetrafluoroethylene film (PTFE) materials with its excellent corrosion resistance, has become the main corrosion-resistant materials for petroleum, chemical, textile and other industries. Specific applications include: transportation of corrosive gases, piping, exhaust pipe, steam pipe, high pressure oil pipe of steel mill, hydraulic system and cold pressure system of high and low pressure piping, distillation tower, heat exchanger, kettle, tower, tank lining, valves and other chemical equipment。

3, low friction properties in the application of loads
Because the coefficient of friction of polytetrafluoroethylene film is the lowest among the known solid materials. Its specific uses include bearings for chemical equipment, paper machinery, agricultural machinery, used as piston rings, machine tool guides, guide rings; in civil engineering widely used as bridges, tunnels, steel roof racks, large chemical pipelines, storage tanks support slider, as well as used as bridge bearings and bridges, such as the turnbuckle。

4, the application of anti-adhesive properties
Polytetrafluoroethylene film (PTFE) material has the smallest surface tension in the solid material, does not adhere to any substance, but also has excellent resistance to high and low temperatures, which makes it in such as the manufacture of non-stick pots and pans in the anti-adhesion aspects of the application is very broad. The anti-stick process consists of two main types: mounting PTFE parts or sheets on a substrate, and applying a PTFE coating or glass-composite enameled fabric to the substrate through heat shrinkage。

With the continuous development of material application technology, the three major shortcomings of polytetrafluoroethylene film (PTFE) materials: cold flow, difficult to weld, difficult to melt processing is gradually being overcome, so that it is in the optics, electronics, medicine, petrochemical transmission of oil seepage and other areas of the application of the broader prospects。

-Good insulation against high voltages up to 1500 volts