- Fluoropolymer
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A fluoropolymer is a fluorocarbon based polymer with multiple strong carbon–fluorine bonds. It is characterized by a high resistance to solvents, acids, and bases.
Contents
History
Fluoropolymers were accidentally discovered in 1938 by Dr. Roy J. Plunkett when he was polymerizing tetrafluoroethylene to form polytetrafluoroethylene (PTFE or more commonly known by the DuPont trademark Teflon[1]).
Properties
Fluoropolymers share the properties of fluorocarbons in that they are not as susceptible to the van der Waals force as hydrocarbons. This contributes to their non-stick and friction reducing properties. Also, they are stable due to the stability multiple carbon–fluorine bonds add to a chemical compound. Fluoropolymers may be mechanically characterized as thermosets or thermoplastics. Fluoropolymers can be homopolymers or copolymers.[citation needed]
Examples of monomers used to prepare fluoropolymers
- Ethylene (E)
- Propylene (P)
- Vinyl fluoride (VF1)
- Vinylidene fluoride (VDF or VF2)
- Tetrafluoroethylene (TFE)
- Hexafluoropropylene (HFP)
- Perfluoropropylvinylether (PPVE)
- Perfluoromethylvinylether (PMVE)
- Chlorotrifluoroethylene (CTFE)
Examples of fluoropolymers
Fluoropolymer Trade names Monomers Melting point PVF (polyvinylfluoride) Tedlar[2] VF1 200°C PVDF (polyvinylidene fluoride) Kynar[3] Solef[4] Hylar[5] VF2 175°C PTFE (polytetrafluoroethylene) Sold by DuPont under the tradename Teflon; sold by Solvay Solexis under the tradenames Algoflon and Polymist TFE 327 °C PCTFE (Kel-F, CTFE) (polychlorotrifluoroethylene) CTFE PFA (perfluoroalkoxy polymer) Sold by DuPont under the tradename Teflon. Hyflon[6] PPVE + TFE 305°C FEP (fluorinated ethylene-propylene) Sold by DuPont under the tradename Teflon HFP + TFE 260°C ETFE (polyethylenetetrafluoroethylene) Tefzel,[7] Fluon[8] TFE + E 265°C ECTFE (polyethylenechlorotrifluoroethylene) Halar[9] CTFE + E FFPM/FFKM (Perfluorinated Elastomer [Perfluoroelastomer]) Kalrez.[10] Tecnoflon[11] FPM/FKM (Fluorocarbon [Chlorotrifluoroethylenevinylidene fluoride]) Viton,[12] Tecnoflon FKM PFPE (Perfluoropolyether) Sold by DuPont under the tradename Krytox. Fomblin[13] Galden[14] Nafion Perfluoropolyoxetane See also
- Organofluorine
- Organohalogen
References
- ^ Teflon is a registered trademark of DuPont
- ^ Tedlar is a registered trademark of DuPont
- ^ Kynar is a registered trademark of Arkema, Inc.
- ^ Solef is a registered trademark of Solvay Solexis S.p.A.
- ^ Hylar is a registered trademark of Solvay Solexis S.p.A.
- ^ Hyflon is a registered trademark of Solvay Solexis S.p.A.
- ^ Tefzel is a registered trademark of DuPont
- ^ Fluon is a registered trademark of Asahi Glass Company
- ^ Halar is a registered trademark of Solvay Solexis S.p.A.
- ^ Kalrez is a registered trademark of DuPont
- ^ Tecnoflon is a registered trademark of Solvay Solexis S.p.A.
- ^ Viton is a registered trademark of DuPont
- ^ Fomblin is a registered trademark of Solvay Solexis S.p.A.
- ^ Galden is a registered trademark of Solvay Solexis S.p.A.
15. Kryrox is a registered trademark of DuPont
External links
Categories:- Fluoropolymers
- Organofluorides
- Polymers
- Thermoplastics
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