PTFE high performance special coating is based on polytetrafluoroethylene resin fluorocoating, the English name is Teflon, because of the pronunciation, often called Teflon and so on (all for Teflon translation). PTFE (teflon) coating is a unique high performance coating, combining heat resistance, chemical inertia, excellent insulation stability and low friction, with comprehensive advantages that no other coating can compete with, its application flexibility makes it can be used in almost all shapes and sizes of products.
Teflon is divided into PTFE, FEP, PFA and ETFE basic types:
· Teflon PTFE: PTFE (Polyfluortetraethylene) non-stick coating can be used continuously at 260℃, with maximum operating temperature of 290-300℃, extremely low friction coefficient, good wear resistance and excellent chemical stability.
· Teflon FEP: FEP (Ethylene fluoride propylene copolymer) non-stick coating forms non-porous film in the melting flow during baking, with excellent chemical stability and excellent non-stick characteristics, and the maximum operating temperature is 200℃.
· Teflon PFA: PFA (Perfluoroalkylate) nonstick coating, like FEP, forms nonporous film by melting flow during baking.PFA has the advantage of higher continuous service temperature of 260℃ and stronger toughness, especially suitable for use in the field of anti-viscosity and chemical resistance at high temperature.
· Teflon ETFE: ETFE is a copolymer of ethylene and tetrafluoroethylene. The resin is the strongest fluoropolymer and can form a highly durable coating with excellent chemical resistance and can work continuously at 150℃.
After coating with teflon, it has the following characteristics:
1, Non-viscosity: almost all materials do not bond with PTFE film.Very thin film also shows good non - adhesion properties.
2, Heat resistance: PTFE coating film has excellent heat and low temperature resistance characteristics.It can withstand high temperature to 300℃ in a short time and can be used continuously between 240℃ and 260℃ in general. It has remarkable thermal stability. It can work at freezing temperature without embrittlement and without melting at high temperature.
3, Sliding: PTFE coating film has a lower friction coefficient.The friction coefficient changes when the load slides, but the value is only between 0.05 and 0.15.
4, Moisture resistance: PTFE coating surface does not stick to water and oil, and it is not easy to stick to solution during production operation. If there is a small amount of dirt, it can be removed simply by wiping.Short downtime, save time and improve work efficiency.
5, Wear resistance: under high load, with excellent wear resistance.Under a certain load, it has the double advantages of wear resistance and non-adhesion.
6. Corrosion resistance: teflon is almost impervious to drugs and can protect parts from any kind of chemical corrosion.
Ptfe is a polymer of tetrafluoroethylene.The abbreviation is PTFE. It's called teflon. It is known as the "king of plastics".The basic structure of ptfe is. - cf2-cf2-cf2-cf2-cf2-cf2-cf2-cf2 - ptfe is widely used in a variety of acid and alkali resistance and organic solvents, it is not toxic to humans, but perfluorooctanoic acid ammonium (PFOA), one of the raw materials used in the production process, is thought to have carcinogenic effects.