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Polychlorotrifluoro ethylene

Extended, or fully extended, chain crystallites contain straight chains at least 200 nm long and have been obtained for only a few polymers, such as polytetrafluoroethylene (PTFE), polyethylene and polychlorotrifluoro-ethylene, using special crystallisation techniques. Extended-chain polytetrafluoroethylene can be obtained by slow crystallisation from the melt the other two are obtained by crystallisation from the melt under elevated pressure. Solution crystallisation has so far not been shown to give rise to extended-chain crystals. [Pg.127]

Rg. 5.9 A transmission electron micrograph of a replica of a fracture surface of extended-chain polychlorotrifluoro-ethylene. The sample was crystallised under 100 MPa pressure at 250°C for 16 h. The sample was first heated above 295°C. After crystallisation it was cooled rapidly to room temperature, followed by release of the pressure. (Reproduced by permission of the Society of Polymer Science, Japan.)... [Pg.128]

Polychlorotrifluoro- ethylene Chemically resistant o-rings, gasket seals, pump sealants Packaging film for electronics, electronic parts Cryogenic applications, aggressive chemical resistance... [Pg.226]

The preferred commercial method of preparation of polychlorotrifluoro- ethylene is by suspension polymerization using procedures similar to those used for polytetrafluoroethylene. In order to obtain polymer of high molecular... [Pg.142]

Polychlorotrifluoro- ethylene PCTFE Film or tape, moldings... [Pg.100]

Polytetrafiouro- Polychlorotrifluoro- Polyisobutylene Polyvinylidene ethylene ethylene (PIB) fluoride... [Pg.57]

See other pages where Polychlorotrifluoro ethylene is mentioned: [Pg.120]    [Pg.66]    [Pg.75]    [Pg.77]    [Pg.128]    [Pg.147]    [Pg.333]    [Pg.567]    [Pg.194]    [Pg.667]    [Pg.251]    [Pg.128]    [Pg.121]    [Pg.120]    [Pg.66]    [Pg.75]    [Pg.77]    [Pg.128]    [Pg.147]    [Pg.333]    [Pg.567]    [Pg.194]    [Pg.667]    [Pg.251]    [Pg.128]    [Pg.121]   
See also in sourсe #XX -- [ Pg.585 ]

See also in sourсe #XX -- [ Pg.29 ]



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