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Introduction of polytetrafluoroethylene film
2022-11
PTFE film is made from molded and sintered cylindrical blanks, which are cut into film by machine tools and then calendered. Depending on the processing method, it can be divided into three types: directional film, semi-directional film and non-directional film, and the current PTFE film products include porous film, microfiltration film and color film.
The development process of polytetrafluoroethylene
The father of fluorine resin, Roy Plunkett, started to study the substitution of Freon in DuPont in 1936. They collected some of the tetrafluoroethylene and stored it in a cylinder to prepare for the next experiment the next day, but when they opened the pressure reducing valve of the cylinder the next day, there was no gas overflow. thought it was a gas leak, but when the cylinder was weighed, they found that the cylinder did not lose weight. They sawed open the cylinder and found a large amount of white powder, which was polytetrafluoroethylene.