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    • 5. 发明申请
    • Fluorine-containing copolymer
    • 含氟共聚物
    • US20050049375A1
    • 2005-03-03
    • US10501548
    • 2003-01-17
    • Hideki KonoTakayuki HiraoGeorge LinKazuyuki Fukuda
    • Hideki KonoTakayuki HiraoGeorge LinKazuyuki Fukuda
    • C08F16/24C08F214/26H01B3/44
    • H01B3/445C08F214/26C08F214/262
    • A fluorine-containing copolymer obtained by copolymerizing tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether as component monomers, wherein a weight ratio of tetrafluoroethylene, hexafluoropropylene and perfluoro vinyl ether units constituting the fluorine-containing copolymer is 70 to 95: 5 to 20: 0 to 10, respectively; the fluorine-containing copolymer having: a melt flow rate of 30 (g/10 minutes) or more; a volatile content index of 0.2% by weight or less; and a stress relaxation modulus G(t) (unit: dyn/cm2) which satisfies the following formula at t=0.1 second when measured at a temperature of 310° C.: G(0.1)>7×106×X−1.62−3000 where X denotes the melt flow rate (unit: g/10 minutes). Also disclosed is an insulating material composed of the fluorine-containing copolymer and an insulated cable having a core conductor coated with the fluorine-containing copolymer.
    • 通过共聚合四氟乙烯,六氟丙烯和全氟乙烯基醚作为成分单体得到的含氟共聚物,其中构成含氟共聚物的四氟乙烯,六氟丙烯和全氟乙烯基醚单元的重量比为70〜95:5〜20:0〜10 , 分别; 所述含氟共聚物的熔体流动速率为30(g / 10分钟)以上; 挥发物含量指数为0.2重量%以下; 和在310℃的温度下测定时在t = 0.1秒时满足下式的应力松弛模量G(t)(单位:dyn / cm 2):G(0.1)> 7×10 6 x X <-1.62> -3000其中X表示熔体流动速率(单位:g / 10分钟)。 还公开了由含氟共聚物和具有涂覆有含氟共聚物的芯导体的绝缘电缆组成的绝缘材料。