Polytetrafluoroethylene performance characteristics are mainly high and low temperature resistance, chemical resistance and weather resistance, low coefficient of friction, self-lubricating and non-stick and many other excellent properties, so polytetrafluoroethylene is corrosion-resistant materials, oil-free lubrication materials, electronic equipment, high-level media materials, medical materials, and anti-adhesive materials.
While PTFE materials have excellent properties that cannot be replaced by other materials, they also have shortcomings such as high melt bonding, high coefficient of expansion, and cold flow properties. With the continuous development of material application technology, researchers are also gradually overcoming these shortcomings of PTFE and applying it in many fields such as petrochemicals, electronics, and medical treatment.
Polytetrafluoroethylene is polymerized from tetrafluoroethylene polymer compounds, with excellent chemical stability, corrosion resistance (is one of the world's best corrosion-resistant materials, in addition to molten metal sodium and liquid fluorine, resistant to all other chemicals, boiling in the King's water also does not change, is widely used in a variety of needs of resistance to acids, alkalis and organic solvents), sealing, high lubrication non-sticky, Electric insulation and good aging resistance, excellent temperature resistance (can work for a long time under the temperature of +250 ℃ to -180 ℃). Polytetrafluoroethylene itself is not toxic to humans, but one of the raw materials used in the production process, perfluorooctanoic acid ammonium (PFOA), is thought to have a possible carcinogenic effect.