Vinylidene-fluoride terpolymers

Major polymer applications membranes, cables, valves, acid storage tanks, tubing, filtration [Pg.704]

Typical fillers carbon black, silica, barium titanate, lead zirconium titanate, zeolite, copper powder [Pg.704]

Typical concentration range carbon black - 5-15 wt%, ceramic filler up to 40 wt%, silica - 20-50 wt%, zeolite - 0.1-1 wt%, copper 10-30 wt% [Pg.704]

Special methods of incorporation pre-dispersion of filler in PVDF solution followed by removal of solvent/ in situ formation of silica [Pg.704]

Special considerations filling with carbon black can lead to the development of material with switching properties (10 fold increase in resistance at certain tempera-ture) crystallization history has effect on performance of switching material [Pg.704]

Chem. Descrip. Tetratiuoroethylene/hexafluoropropylene/vinylidene fluoride terpolymer... [Pg.295]

Chem. Descrip. Tetrafluoroethylene/hexafluoropropylene/vinylidene fluoride terpolymer disp. with ionic emulsifier Uses Fluoropolymer for coating heat-sensitive substrates such as polyester fabrics in low temp, fabric composites Features Useful for applies, requiring performance and flexibility Properties Cone, water disp. sp.gr. 1.95 melt flow 35-60 (265 C/5 g) m.p. 140-150 C 50% solids Dyneon THV 400 G [Dyneon]... [Pg.296]

Chem. Descrip. Tetrafluoroethylene/hexafluoropropylene/vinylidene fluoride terpolymer disp. with ionic emulsifier Uses Fluoropolymer for molded parts, extruded films, tubes, profiles, and wire coatings... [Pg.296]

There are a number of other polymers in this family including polychlorotrifluoroethylene (PCTFE), polyvinyl fluoride (PVF), polyvinylidenefluoride, ethylene chlorotrifluoroethylene (ECTFE), tetrafluoro-ethylene/hexafluoropropylene/vinylidene fluoride terpolymers, and chlorotrifluoroethylene/vinylether copolymers. [Pg.6]

In the mid-1980s Hoechst introduced a related material, Hostaflon TFB, a terpolymer of tetrafluoroethylene, hexafluoropropene and vinylidene fluoride. [Pg.374]

In 1991 MMM announced Fluorel II, a terpolymer of tetrafluoroethylene, vinylidene fluoride and propylene. As might be expected from the structure, this is intermediate between FKM and Aflas, having better resistance to many newer automotive oils, lubricants and transmission fluids than the former but better heat resistance than the latter. [Pg.382]

The isoprene units in the copolymer impart the ability to crosslink the product. Polystyrene is far too rigid to be used as an elastomer but styrene copolymers with 1,3-butadiene (SBR rubber) are quite flexible and rubbery. Polyethylene is a crystalline plastic while ethylene-propylene copolymers and terpolymers of ethylene, propylene and diene (e.g., dicyclopentadiene, hexa-1,4-diene, 2-ethylidenenorborn-5-ene) are elastomers (EPR and EPDM rubbers). Nitrile or NBR rubber is a copolymer of acrylonitrile and 1,3-butadiene. Vinylidene fluoride-chlorotrifluoroethylene and olefin-acrylic ester copolymers and 1,3-butadiene-styrene-vinyl pyridine terpolymer are examples of specialty elastomers. [Pg.20]

Terpolymers of vinylidene fluoride, perfluoro(methyl vinyl ether), tetrafluoroethylene (VF2/PVME/TFE)... [Pg.113]

Many other crosslinking reactions are used in commercial applications. A variety of halogen-containing elastomers are crosslinked by heating with a basic oxide (e.g., MgO or ZnO) and a primary diamine [Labana, 1986 Schmiegel, 1979]. This includes poly(epichlorohydrin) (Sec. 7-2b-6) various co- and terpolymers of fluorinated monomers such as vinylidene fluoride, hexafluoropropene, perfluoro(methyl vinyl ether), and tetrafluoroethylene (Sec. 6-8e) and terpolymers of alkyl acrylate, acrylonitrile, and 2-chloroethyl vinyl ether (Sec. 6-8e). [Pg.744]

In addition, Maiti and Bhowmick [93] also used fluoroelastomers having different microstructure and viscosity (Viton B-50, Viton B-600, Viton A-200, and VTR-8550). Viton is a terpolymer of vinylidene fluoride (VF2), hexafluoropropylene (HFP), and tetrafluoroethylene (TFE). Even with the addition of only 4 phr of clay in Viton B-50, the tensile strength and modulus improved by 30-96% and 80-134%, respectively, depending on the nature of the nanoclays. The better polymer-filler interaction in the case of NA clay and the fluoroelastomers has... [Pg.30]

Terpolymer of Tetrafluoroethylene, Hexafluoropropylene, and Vinylidene Fluoride (THV Fluoroplastic)... [Pg.8]

The first commercial fluoroelastomer, Kel-F, was developed by the M. W. Kellog Company in the early to mid-1950s and is a copolymer of vinylidene fluoride (VDF) and chlorotrifluoroethylene (CTFE). Another fluorocarbon elastomer, Viton A, is a copolymer of VDF and hexafluoropropylene (HFP) developed by du Pont was made available commercially in 1955. The products developed thereafter can be divided into two classes VDF-based fluoroelastomers and tetrafluoroethylene (TFE)-based fluoroelastomers (perfluoroelastomers).72 The current products are mostly based on copolymers of VDF and HFP, VDF and MVE, or terpolymers of VDF with HFP and TFE. In the combination of VDF and HFP, the proportion of HFP has to be 19 to 20 mol% or higher to obtain amorphous elastomeric product.73 The ratio of VDF/HFP/TFE has also to be within a certain region to yield elastomers as shown in a triangular diagram (Figure 2.2).74... [Pg.26]

Chemically, THV Fluoroplastic (hereafter referred to as THV) is a terpolymer of tetrafluoroethylene (TFE), hexafluoropropylene (HFP), and vinylidene fluoride (VDF) produced by emulsion polymerization. The resulting dispersion is either processed into powders and pellets or concentrated with emulsifier and supplied in that form to the market.91 Currently, the manufacturer is Dyneon LLC and there are essentially nine commercial grades (five dry and four aqueous dispersions) available that differ in the monomer ratios and consequently in melting points, chemical resistance, and flexibility. [Pg.50]

Functionalized terpolymers, (I), consisting of vinylidene fluoride, hexafluor-opropene, and silyl-modified tetrafluoroethylene were prepared by Chung [1] to increase the reactivity of perfluoropolymers to subsequent chemical modification. [Pg.235]

Perfluoro terpolymerss consisting of tetrafluoroethylene, hexfluoropropylene, and vinylidene fluoride were prepared by Park [2] using electron beam radiation. Perfluoro terpolymers were also prepared by Park [3] using 2,5-dimethyl-2,5-di(t-butylperoxy)-hexane. [Pg.236]

Note ETFE, copolymer of ethylene and tetrafluoroethylene HTE, terpolymer of hexafluoropropyl-ene, tetrafluoroethylene and ethylene FEP, fluorinated ethylene-propylene copolymer PVDF, poly(vinylidene fluoride) THV, terpolymer of tetrafluorioethylene, hexafluoropro-pylene and vinylidene fluoride. [Pg.34]

Daikin Industries DuPont Fluoroproducts Note PTFE, polytetrafluoroethylene CTFE, chlorotriflua oethylene EFEP, per-fluorinated copolymer of ethylene and propylene ETFE, copolymer of ethylene tetrafluoroethylene PFPE, perfluorinated polyether EClFE, copolymer of ethylene and chlorotrifluoroethylene HIE, ter-polymer of hexafluoropropylene, tetrafluoroethylene, and ethylene MFA, copolymer of perfluoromethyMnylether and tetrafluoroethylene PEA, copolymer of perfluoropropylvinylether and tetrafluoroethylene FEP, fluorinated ethylene-propylene copolymer PVDF, poly(vinylidene fluoride) THV, terpolymer of tetrafluoroethylene, hexafluoroprqjylene, and vinyUdene fluoride PCTFE, poly(chlorotriflua oethylene). [Pg.196]

THV (fluoroplastic) A terpolymer of tetrafluoroethylene (TFE), hexafluoropro-pylene (HFP), and vinylidene fluoride (VDF). [Pg.203]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...