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Tetrafluoroethylene is a reactive molecule that participates in myriad reactions. Owing to the presence of four fluorine substituents, its reactions differ strongly from the behavior of conventional alkenes such as ethylene. Tetrafluoroethylene dimerizes, giving octafluorocyclobutane. Even normal alkenes and dienes add tetrafluoroethylene in a ...
Because tetrafluoroethylene can explosively decompose to tetrafluoromethane (CF 4) and carbon, a special apparatus is required for the polymerization to prevent hot spots that might initiate this dangerous side reaction. The process is typically initiated with persulfate, which homolyzes to generate sulfate radicals: [O 3 SO−OSO 3] 2− ⇌ 2 ...
Ethylene tetrafluoroethylene (ETFE) is a fluorine-based plastic. It was designed to have high corrosion resistance and strength over a wide temperature range. ETFE is a polymer and its source-based name is poly (ethene-co-tetrafluoroethene). It is also known under the DuPont brand name Tefzel and is sometimes referred to as 'Teflon Film'. ETFE ...
tetrafluoroethylene-perfluoro-3,6-dioxa-4-methyl-7-octenesulfonic acid copolymer The molecular weight of Nafion is variable due to differences in processing and solution morphology. [ 3 ] [ 4 ] The structure of a Nafion unit illustrates the variability of the material; for example, the most basic monomer contains chain variation between the ...
In manufacturing high-quality composite parts, such as in the aerospace industry, FEP film can be used to protect parts during the curing process. In such applications, the film is called "release film" and is intended to prevent the curing adhesive polymer (e.g. the epoxy in a carbon fibre/epoxy composite laminate) from bonding to the vacuum ...
Production [ edit ] In the radical telomerization of fluorotelomer molecules , a variety of fluorinated alkenes can serve as unsaturated taxogens including tetrafluoroethylene , vinylidene fluoride , chlorotrifluoroethylene , and hexafluoropropene .
Asia Pacific is the fastest growing region of production. [2] China in particular has experienced significant growth as a fluorochemical market and is becoming a producer of them as well. [ 3 ] Fluorite mining (the main source of fluorine) was estimated in 2003 to be a $550 million industry, extracting 4.5 million tons per year.
While working with tetrafluoroethylene gas to develop refrigerants, he noticed that a previously pressurized cylinder had no pressure remaining. In dissecting the cylinder, he found a mass of white solid in a quantity similar to that of the tetrafluoroethylene gas. It was determined that this material was a new-to-the-world polymer. Tests ...