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Tetrafluoroethylene/perfluoromethyl vinyl ether

Tetrafluoroethylene, perfluoromethyl vinyl ether cure site monomer... [Pg.974]

Terpolymers of tetrafluoroethylene, perfluoromethyl vinyl ether, and small amounts of a cross-linking termonomer, such as, for example, perfluoro(4-cyanobutyl vinyl ether), are free radically copolymerized in emulsion. Vulcanization occurs by cyclotrimerization of the cyano groups to s-triazine rings. The elastomer has a glass transition temperature of —12 C and a brittle temperature of —39° C. It is very resistant to weathering and possesses a good low-temperature flexibility. [Pg.430]

Hexafluoropropylene- co-tetrafluoroethylene Perfluoromethyl vinyl ether-co-tetrafluoroethylene DSC I had 1 mol% hexaflucHopropylene II had 2 mol% perfluOTOTielhyl vinyl ether Pucciariello and Angioletti (1999)... [Pg.2104]

Polyvinylidene Fluorides (PVDF) Tetrafluoroethylene Perfluoromethyl Vinyl Ether (MFA)... [Pg.1592]

Polyvinylidene Fluorides (PVDF) Dispersant 8 Polyester, PBT Polyethersulfone (PES) Polyvinylidene Fluorides (PVDF) Edible Fats Waxes and Oils 9 8 Perfluoroalkoxy Polymer (PFA) Polytetrafluoroethylene (PTFE) Polyvinylidene Fluorides (PVDF) Tetrafluoroethylene Perfluoromethyl Vinyl Ether (MFA) 9... [Pg.1614]

In this entry, fluoropolymer means a polymer that consists of partially or fully fluorinated olefinic monomers, such as vinylidene fluoride (CH2=CF2) and tetrafluor-oethylene (CF2=CF2). Commercial fluoropolymers include homopolymers and copolymers. Homopolymers contain 99wt.% or more one monomer and lwt.% or less of another monomer according to the convention by American Society for Testing Materials. Copolymers contain 1 wt.% or more of one or more comonomers. The major commercial fluoropolymers are based on tetrafluoroethylene, vinylidene fluoride, and to a lesser extent chlorotrifluoroethylene. Examples of comonomers include perfluoromethyl vinyl ether (PMVE), perfluoroethyl vinyl ether (PEVE), perfluoro-propyl vinyl ether (PPVE), hexafluoropropylene (HFP), chlorotrifluoroethylene (CTFE), and perfluorobutyl ethylene (PFBE). [Pg.1031]

PRA Prabhakar, R.S., DeAngelis, M.G., Sarti, G.C., Freeman, B.D., and Coughlin, M.C., Gas and vapor sorption, permeation, and diffusion in poly(tetrafluoroethylene-co-perfluoromethyl vinyl ether). Macromolecules, 38, 7043, 2005. [Pg.107]

A family of copolymers containing TFE and perfluoromethyl vinyl ether modified with PPVE referred to as MFA is produced by Ausimont (24). The relatively small pendant group —0—CF3 seems to have a similar effect on the crystallinity reduction as is exhibited by —CF3 in FEP (perfluoropropylene-tetrafluoroethylene copolymer) however, the higher reactivity of perfiuoromethyl vinyl ether than that of HFP makes the polymerization process more efficient. The performance characteristics are described in References 11 and 25. [Pg.5471]

Solubility parameter of poly(tetrafluoroethylene-eo-perfluoromethyl vinyl ether)... [Pg.1668]

Perfluroalkoxy polymer or PFA is one of the most important meltprocessible fluoroplastics due to its relative ease of processing and high service temperature equivalent to polytetrafluoroethylene (260°C). It also has the same excellent chemical resistance and low friction properties as PTFE. Perfluroalkoxy polymers are prepared by copolymerization of a perfluoroalkylvinyl ethers (Rf—O—CF=CF2, where Rj is a perfluorinated alkyl group) with tetrafluoroethylene. Examples of commercially utilized ethers include perfluoromethyl-vinyl ether (CFg—O—CF=CF2), perfluoroethylvinyl ether (C2F5—O—CF=CF2) and perfluoropropylvinyl ether (C3F7—O—CF=CF2). Several percent of ether is incorporated in a copolymer. [Pg.43]

TFE = tetrafluoroethylene, PPVE = perfluoropropyl vinyl ether, PMVE = perfluoromethyl vinyl ether, HEP = hexafluoropropylene. HFPO oxide dimer peroxide is the initiator, 1,1,2-trichlorotrifluoroethane is the solvent. [Pg.108]

Polymer Composition Copolymer tetrafluoroethylene eopolymer with 1.5 mole% perfluoropropyl vinyl ether Copolymer tetrafluoroethylene eopolymer with 6.9 mole% hexafluoropropylene Copolymer tetrafluoroethylene eopolymer with 3.5 mole% perfluoromethyl vinyl ether and 0.4 mole% perfluoropropyl vinyl ether... [Pg.241]

Tables 12.1 and 12.2 summarize the effect of a number of representative organic and inorganic compounds on tetrafluoroethylene-perfluoropropyl vinyl ether polymer (PFA). Figure 12.2 gives a comparison of PFA and MFA (copolymer of tetrafluoroethylene and perfluoromethyl vinyl ether). Tables 12.1 and 12.2 summarize the effect of a number of representative organic and inorganic compounds on tetrafluoroethylene-perfluoropropyl vinyl ether polymer (PFA). Figure 12.2 gives a comparison of PFA and MFA (copolymer of tetrafluoroethylene and perfluoromethyl vinyl ether).
The second period from 50 to mid 70s might be the era of copolymers. Major improvements of processabilities or porperties of homopolymers like PTFE were attained in this period. The copolymers include FEP, ETFE and PFA which is a copolymer of TFE and perfluoropropyl vinyl ether. Another progress in this era is the commercial-ization of fluoroelastomers such the most popular elastomer as Viton, that is the copolymer of vinylidene fluoride and hexafluoropropylene or sometimes with TFE as a ter-monomer, which was followed by tetrafluoroethylene-based elastomers with propylene or perfluoromethyl vinyl ether comonomers. [Pg.68]

See other pages where Tetrafluoroethylene/perfluoromethyl vinyl ether is mentioned: [Pg.254]    [Pg.488]    [Pg.132]    [Pg.128]    [Pg.177]    [Pg.1594]    [Pg.1598]    [Pg.1605]    [Pg.1619]    [Pg.1625]    [Pg.388]    [Pg.254]    [Pg.488]    [Pg.132]    [Pg.128]    [Pg.177]    [Pg.1594]    [Pg.1598]    [Pg.1605]    [Pg.1619]    [Pg.1625]    [Pg.388]    [Pg.185]    [Pg.895]    [Pg.137]    [Pg.55]    [Pg.26]   
See also in sourсe #XX -- [ Pg.254 ]



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Tetrafluoroethylene

Tetrafluoroethylene Perfluoromethyl Vinyl Ether (MFA)

Tetrafluoroethylene/perfluoromethyl vinyl

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