The complete name of Teflon is Polytetrafluoroetylene,Referred to as the Teflon, PTFE, F4 etc. Polytetrafluoroethylene (Polytetrafluoroethene), commonly known as "non stick coating" is a use of fluorine substituted all hydrogen atoms in polyethylene synthetic polymer materials; Which has the advantages of acid alkali, resistance to various characteristics of organic solvents, insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, coefficient of friction is very low, so it can be used as lubrication of remaining, also became the ideal coating for pipe lining.
DuPont Co Teflon (TeFulong) trademark is mainly used in the following products: PTFE, FEP, PFA, ETFE, AF, NXT, FFR.
PTFE: PTFE (polytetrafluoroethylene) nonstick coatings can be used continuously in 260 ℃, with the highest use temperature of 290-300 ℃, very low friction coefficient, good wear resistance and excellent chemical stability.
FEP: FEP (fluorinated ethylene propylene copolymer) non stick coating melt flow formed during baking no hole film, non stick properties has excellent chemical stability, excellent, high temperature up to 200 ℃.
PFA: PFA (a fluoroalkyl compounds) non stick coatings and FEP in baking melt flow forming non porous films.
PFA has the advantages of higher continuous use temperature 260 ℃, stronger just toughness,especially suitable for the use of anti - and chemical resistant use in high temperature conditions.
Non-viscous: almost all the material is not with Teflon coating adhesion. Thin film also shows a not Non- adhesive performance.
Heat resistance: Teflon coating has excellent heat resistance and low temperature properties. Heating resistance under the short time high temperature to 300 ℃, in general between 240 ℃ ~260 ℃ can be used continuously, has outstanding heat stability, it can work in the freezing temperature and not brittle, does not melt at high temperature
Slide: Teflon coating has a low friction coefficient. Load sliding friction coefficient changes, but the value is only between 0.05-0.15.
Moisture resistance: PTFE film surface above water and oil, the production operation is not easy to dip solution, such as viscosity has a few simple dirt, wipe clean. Downtime, can save time and improve efficiency
Abrasion standing: under the high load, has excellent wear resistance. Under load, resistance to wear and do not have the dual advantages of adhesion.
Corrosion resistance: PTFE is almost not affected by drug erosion, able to withstand except molten alkali metals, fluoride and all the strong acid medium is higher than 300 ℃ sodium hydroxide addition (including aqua regia), strong oxidant, reducing agent and various organic solvents, can protect the components from any kind of chemical corrosion.