Views: 0 Author: Site Editor Publish Time: 2022-12-08 Origin: Site
Polytetrafluoroethylene is called "the king of plastics", polytetrafluoroethylene (Poly tetrafluoroethylene), the English abbreviation is PTFE. It has excellent electrical performance, and is not affected by the working environment, humidity, temperature and frequency, and has good arc resistance. Has excellent atmospheric aging resistance and non-combustibility. Long-term exposure to the atmosphere, the performance remains unchanged. Under normal conditions, PTFE is completely non-combustible. Excellent chemical stability.
Except elemental fluorine and metal sodium in molten state have a certain corrosive effect on its products, almost all strong acids, strong alkalis, strong oxidants and organic solvents have no effect on it.
high chemical stability
PTFE can withstand the action of all strong acids, strong alkalis, strong oxidants, reducing agents, etc. except molten alkali metals, fluorine elements, strong fluorinated media, and sodium hydroxide above 300 °C. Its chemical corrosion resistance exceeds that of precious metals, glass, ceramics, enamel and alloys, etc., even if uranium fluoride, a strong corrosive agent in the atomic energy industry, does not corrode it.
Wide operating temperature range
PTFE can be used in a wide range of -250 to 260°C, and it can still maintain a certain degree of flexibility even at an ultra-low temperature of -260°C.
The molecular structure of FEP is similar to that of PTFE, but it is slightly different. Because the molecular structure is slightly different, the fluidity in the sintered state is higher than that of PTFE, so FEP can be produced by injection molding. The side effect is that its chemical properties are not as stable as PTFE and corrosion resistance Performance is inferior to PTFE, but still better than other plastics.
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