Polytetrafluoroethylene (commonly referred to as "non adhesive coating" or "easy to clean material") is a synthetic polymer material which uses fluorine instead of all hydrogen atoms in polyethylene. This material has the characteristics of anti - acid, alkali, anti - organic solvent and almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, the friction coefficient is very low, so it can be used as lubricant remaining, also became the ideal coating and the inner pipe easy to clean wok.
PTFE is called "plastic king", the father of fluorine resin Roy Plunkett 1936 began to study the Freon substitutes for DuPont Co in the United States, they collected part of tetrafluoroethylene stored in cylinders, ready for the next step of the experiment for second days, but when the second day open cylinder pressure relief valve, no gas overflow, they thought it was a leak however, the cylinder cylinder is not found when weighing, weight loss. They saw a cylinder, found a lot of white powder, which is ptfe. They found that polytetrafluoroethylene is excellent in nature, and can be used for the sealing and sealing gaskets of atomic bombs and shells, so the US army kept the technology secret during World War II. It was not deciphering until the end of World War II and industrialized production of polytetrafluoroethylene in 1946.
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