In fluorine plastics, teflon (ptfe) consumption is the largest, most versatile, it is a very important part in fluorine plastic varieties. The chemical structure of ptfe is all hydrogen atoms are replaced by fluorine atoms in the polyethylene.

Product name: ptfe

English name: Polytetrafluoroethylene

Don't name: PTFE; Teflon. Teflon. Teflon. Teflon. F4. The king of the plastic; テ フ ロ ン (Japanese) 【 abbreviations for PTFE, brand name Teflon®, around different Chinese translation: mainland translation for teflon & reg; and Hong Kong as teflon & reg;, Taiwan of teflon & reg;]

Molecular formula: [CF2CF2] n

Production methods: ptfe generated by tetrafluoroethylene via radical polymerization. Industrial polymerization was conducted in the presence of large amounts of water mixing, to disperse the heat, and easy to control temperature. Polymerization in 40 ~ 80 ℃, 3 ~ 26 kg/cm2 pressure, under available inorganic sulfate, organic peroxide as the initiator, also can use the REDOX initiator system. Per mole tetrafluoroethylene aggregation exothermic 171.38 kJ. Dispersion polymerization must add perfluorinated surfactant, such as acid or its salts.

Use: can be made into rods, plates, tubes, thin film and all kinds of different products, used in aerospace, chemical, electronics, machinery, medicine and other fields.

Case note:

Teflon (PTFE, F4] is one of the best material corrosion resistance in the world today, "plastics king" laudatory name. It can be in any kind of chemical media use for a long time, it have solved our country a lot of problems in the field of chemical, petroleum, pharmaceutical, etc. Ptfe seals, gaskets, gasket, ptfe seals, gaskets, sealing washer is made from suspension polymerization ptfe resin molding processing. Ptfe compared with other plastic has the characteristics of excellent resistance to chemical corrosion and heat resistance, it has been widely used as sealing material and filler material.

High chemical stability and excellent resistance to chemical corrosion, such as resistant to strong acid, strong alkali, strong oxidizing agents, has the outstanding heat resistance, cold-resistant and frictional resistance, use for a long time - 200 - + 250 ℃ temperature range, and excellent electrical insulation, and is not influenced by temperature and frequency. In addition, have not touch, not bibulous, not burning, etc. Suspension resin commonly used moulded, sintering method processing, made by the rods, plates or other profile can also be further transport plane, drilling, milling and other machining method of processing. The bar then through turning draft can be made into film.

Polytetrafluoroethylene (PTFE) features:

1. The intensity (high strength to weight ratio)

2. The chemical inertness

3. The biological adaptability

4. The high heat resistance

5. Gao Huaxue impedance in harsh environments

6. Low flammability

7. Low coefficient of friction

8. Low dielectric constant

9. Low water imbibition

10. Excellent weathering properties