Polytetrafluoroethylene (PTFE) resin was first developed by the American chemist Dr. Plunket in 1938. By the 1950s, industrial production was realized abroad, and my country was officially put into production in the 1960s. PTFE, commonly known as “Plastic King”, is widely used by Dankai in all aspects due to its unique properties. It has high temperature resistance, no oxidation, no dissolution, particularly good chemical stability and extremely excellent dielectric properties, making it one of the indispensable important materials in almost all industrial sectors such as chemical and mechanical industries.

PTFE Dankai resin is mostly powder or dispersion, with very high relative molecular mass (8.88×106～3.17×107) and high crystallinity (92%-98%), melting point 327℃, due to its molecular structure There is a strong FC bond,
It has the following main properties:
①Chemical resistance: In addition to reacting with molten sodium metal, fluorine, strong fluorinated media, and sodium hydroxide above 300°C, it is inert to almost all common chemicals;
②Heat resistance: no heat aging will occur below 260℃;
③Electrical properties: good electrical insulation, high arc resistance, volume resistivity greater than l×1016Ω.m, and does not change with temperature;
④Lubricity: low friction coefficient in a wide temperature range;
⑤Radiation resistance: In a vacuum, when the radiation dose is the maximum, it can still maintain 50% of the original tensile strength;
⑥ Low permeability: It has a low permeability, except for the fluorocarbons of similar composition, which has a higher permeability, but also has a small permeability to most gases and liquids;
⑦Weather resistance: It is not affected by the climate, and can be exposed to more than 10 years in any climate;
⑧Incombustibility: The limiting oxygen index is above 90;
⑨Non-sticky: almost all sticky substances cannot stick to its surface;
⑩High and low temperature resistance: It can be used in a temperature range of 250～250℃. Because PTFE has the above excellent properties, it is called “the king of plastics” and is widely used in various fields such as national defense, aerospace, petrochemical, electronics, machinery and so on.