Polytetrafluoroethylene, abbreviated as PTFE (commonly known as "plastic king, Hala"), trademark Teflon? In China, because of pronunciation, the trademark Teflon is also called Teflon, Teflon, Teflon, Teflon, Teflon and so on, all of which are transliteration of Teflon. Products of this material are generally called "non-stick coatings"; It is a synthetic polymer material, and all hydrogen atoms in polyethylene are replaced by fluorine. This material has the characteristics of acid resistance, alkali resistance and resistance to various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance and very low friction coefficient, which can be used for lubrication and also become an ideal coating for non-stick pots and water pipes.
Chinese name
polytetrafluoroethylene
Foreign name
polytetrafluoroethylene
Another name
King of plastics, Hara.
English name
polytetrafluoroethylene
conductivity for heat
0.25 W/(m k)
more
history
Polytetrafluoroethylene (PTFE) was accidentally discovered by chemist Dr. Roy J. Plunkett in Jackson Laboratory of DuPont Company, New Jersey, USA on 1938 [1]. When he tried to make a new CFC refrigerant, PTFE was polymerized in a high-pressure storage container (the iron on the inner wall of the container became the catalyst for polymerization). Dupont Company obtained the patent at 194 1 and registered the trademark under the name of "Teflon" at 1944. Subsequently, DuPont in Teflon? In addition to PTFE resin, a series of products have been developed, including PTFE; AF (amorphous fluoropolymer), Teflon; FEP (fluorinated ethylene propylene resin), Teflon; FFR (fluoropolymer foam resin), Teflon; NXT (fluoropolymer resin), Teflon; PFA (perfluoroalkoxy resin), etc.
1954, Colette, the wife of French engineer Marc Gregoire, had a whim that Teflon, a non-stick material used by her husband to coat fishing lines to prevent knots, would have a good effect if it could be used in frying pans. The "non-stick pot" that saved countless modern housewives was born.
function
Ptfe is called Polytetrafl in English.
Teflon figure
Tetrafluoroethylene refers to polytetrafluoroethylene, polytetrafluoroethylene, F4, etc. Polytetrafluoroethylene, usually called "non-stick coating" or "easy-to-clean wok material"; It is a synthetic polymer material, and all hydrogen atoms in polyethylene are replaced by fluorine. This material has the characteristics of acid resistance, alkali resistance and resistance to various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance and very low friction coefficient, which can be used for lubrication, and it has also become an ideal coating for easy-to-clean woks and water pipes.
commodity classification
Dupont Teflon trademark is mainly used for the following products: PTFE, FEP, PFA, ETFE, AF, NXT and FFR.
PTFE:PTFE (polytetrafluoroethylene) non-stick coating can be used continuously at 260℃, with the highest service temperature of 290-300℃, extremely low friction coefficient, good wear resistance and excellent chemical stability.
FEP:FEP (fluorinated ethylene propylene * * * polymer) non-stick coating melts and flows during baking, forming a non-porous film, which has excellent chemical stability and non-stick characteristics, and the highest service temperature is 200℃.
PFA:PFA (perfluoroalkyl) non-stick coating melts and flows during baking, forming a non-porous film similar to FEP. PFA has higher continuous service temperature of 260℃, stronger rigidity and toughness, and is especially suitable for anti-sticking and chemical resistance at high temperature.