The chemical structure of PTFE has the hydrogen atoms 　　 of polyethylene completely displaced by fluorine atoms 　　 to form a high molecule. Its chemical structure is 　　 as follow:

The shield of fluorine atoms renders the C-S chain immunity to chemical attack, and the extremely stable C-F bond is attacked only by highly aggressive agents, such as alkali metals or elemental fluorine.

The molecule PTFE, having its F atoms symmetrical, is combined by C and F these two kinds of element covalency with no electron dissociated, and the whole member is neutral. All these characteristics are contributed to the premium dielectric properties for the whole PTFE molecule. What's more, PTFE has marked anti-adhesive properties and a low coefficient of friction, with its inertia fluorine outer cover.

PTFE has a unique combination of outstanding properties, including high temperature resistance, chemical inertness dielectric behavior, non-sticking and self-lubricating properties, and the lowest coefficient of friction of all solid materials. Most other properties and characteristics of the basic PTFE are remained. Practically any material that can withstand the sintering temperature of PTFE can be used as a filler. Among the filler materials used are glass fiber, graphite, molybdenum disulfide metal, mullein oxides, carbon fiber, polyamide, EKONOL etc. The wear hardness and the limit value of PV could be enhanced to 1,000 times.

Physical property: