Polytetrafluoroethylene is a polymer of tetrafluoroethylene. The English abbreviation is PTFE. The basic structure of PTFE is. - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 - CF2 -. PTFE is widely used in various fields requiring acid and alkali resistance and organic solvents. It is not toxic to human beings. However, ammonium perfluorooctanate (PFOA), one of the raw materials used in the production process, is thought to be carcinogenic. Chemicals.
Usage: It can be made into rods, plates, pipes, thin films and various special-shaped products. It can be used in aerospace, chemical industry, electronics, machinery, medicine and other fields.
It does not melt at 250 C and does not harden at - 260 C. Polytetrafluoroethylene (PTFE) lubricates differently, even ice is better than it; its insulation performance is particularly good, and a thick film is enough to stand 1500V high voltage.
It has high chemical stability and excellent chemical corrosion resistance, such as strong acid, strong alkali, strong oxidant, etc. It has outstanding heat resistance, cold resistance and friction resistance. Its permanent application temperature range is - 200 - +250 C. It also has excellent electrical insulation, and is not affected by temperature and frequency. In addition, it has the characteristics of non-sticking, non-absorbing and non-burning. Suspension resin is usually processed by moulding and sintering. The rods, plates or other profiles can be further processed by means of turning, drilling and milling. Directional film can be made from bar by turning and drawing.
Electrical properties: The dielectric and dielectric losses of PTFE in a wide frequency range are very low, and the breakdown voltage, volume resistivity and arc resistance are high.
Self-lubrication: With a small friction coefficient in plastic, it is a fantastic oil-free smooth material.
The F atom in PTFE covers the C-C bond and the C-F bond is highly stable. It is not used in any chemicals except alkali metals and elemental fluorine.