The Use Performance Of PTFE
- Jul 30, 2018 -

High temperature-long-term use of temperature 200~260℃, low temperature-still soft at 100 degrees, corrosion-resistant to aqua regia and all organic solvents; weather-the best aging life in plastics; high lubrication-the smallest friction coefficient in plastics (0.04); Non-viscous- Having the smallest surface tension in a solid material and not adhering to any substance; no toxicity-physiological inertia; excellent electrical performance, is the ideal C-class insulating material, the newspaper thick layer can block 1500V of high pressure; smoother than ice.

PTFE materials, widely used in defense industry, Atomic Energy, petroleum, radio, electrical machinery, chemical industries and other important departments. Products: Poly PTFE Four ethylene bar, pipe material, plate, turning plate. PTFE is a tetrafluoroethylene polymer. The English abbreviation is PTFE. The structural type is. The late 1930s found that the 40 generation into industrial production. The nature of PTFE relative molecular weight is large, low hundreds of thousands of, high up to 10 million, generally millions of (polymerization degree in 104 orders of magnitude, and polyethylene only in 103). The general crystallinity is 90~95% and the melting temperature is 327~342℃. The CF2 element in PTFE is arranged according to the sawtooth shape, because the fluorine atom radius is slightly larger than hydrogen, so the adjacent CF2 element can not completely follow the trans-cross orientation, but form a helical twisted chain, the fluorine atom almost covers the whole surface of the polymer chain. This molecular structure explains the various properties of PTFE. When the temperature is less than 19 ℃, 13/6 spirals are formed, and phase change occurs in 19 ℃, and the molecule is slightly untied to form a 15/7 helix.


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