Advantages Of PTFE

- Oct 15, 2018-

High temperature resistance-operating temperature up to 250 ℃.

Low temperature resistance-has good mechanical toughness, even if the temperature drops to 196 ℃, can also maintain a 5% elongation.

Corrosion-resistant to most chemicals and solvents, showing inertia, resistance to strong acids, alkalis, water and various organic solvents.

Weather-resistant – The best aging life in plastics.

High lubrication--is the lowest coefficient of friction in solid materials.

Non-adhesion-is the smallest surface tension in the solid material and does not adhere to any substance.

Non-toxic-with physiological inertia, as artificial blood vessels and organs long-term implantation without adverse reactions.

Electrical insulation – can withstand 1500 volts of high voltage power. PTFE relative molecular weight is larger, the lower is hundreds of thousands of, higher than 10 million, generally millions of (polymerization degree in the 10^4 order of magnitude, and polyethylene only in 10^3). The general crystallinity is 90~95% and the melting temperature is 327~342℃. PTFE molecules in the CF2 unit by the sawtooth shape, because the fluorine atom radius is slightly larger than carbon, so the adjacent CF2 unit can not be completely reversed cross-orientation, but the formation of a spiral twisted chain, fluorine atoms almost covered the entire polymer chain surface. This molecular structure explains the various properties of PTFE. When the temperature is less than 19 ℃, 13/6 spirals are formed, and in 19 ℃ the phase transition occurs, the molecule is slightly untied, forming 15/7 spirals.