Electrical insulation
    1.
    发明授权
    Electrical insulation 失效
    电绝缘

    公开(公告)号:US4678709A

    公开(公告)日:1987-07-07

    申请号:US738622

    申请日:1985-05-28

    摘要: Electrical insulation comprises (1) an inner layer of a cross-linked polymer, e.g. polyethylene, an ethylene/tetrafluoroethylene copolymer, an ethylene/chlorotrifluoroethylene polymer or a vinylidene fluoride polymer, and (2) an outer layer of an aromatic polymer having a glass transition temperature of at least 100.degree. C., e.g. a polyether ether ketone, a polyether ketone or a polyether sulfone. Such insulation combines excellent properties under normal service conditions with low smoke evolution on burning, and is therefore particularly useful for aircraft wire and cable.

    摘要翻译: 电绝缘体包括(1)交联聚合物的内层,例如, 聚乙烯,乙烯/四氟乙烯共聚物,乙烯/三氟氯乙烯聚合物或偏二氟乙烯聚合物,和(2)玻璃化转变温度为至少100℃的芳族聚合物的外层,例如。 聚醚醚酮,聚醚酮或聚醚砜。 这种绝缘在正常使用条件下结合了优异的性能,并且在燃烧时具有低烟雾放出,因此对飞机电线和电缆特别有用。

    Insulated electrical conductors
    3.
    发明授权
    Insulated electrical conductors 失效
    绝缘电导体

    公开(公告)号:US6087591A

    公开(公告)日:2000-07-11

    申请号:US690092

    申请日:1996-07-31

    摘要: Polymeric compositions which contain a thermoplastic aromatic polyester, preferably polybutylene terephthalate, and a polyester block copolymer having a recrystallization temperature greater than 150.degree. C., preferably a thermoplastic elastomer containing aromatic polyester blocks and aliphatic polyester blocks. The ratio of the block copolymer to the aromatic polyester is 0.05:1 to 0.35:1, preferably 0.15:1 to 0.30:1. These compositions are particularly useful as the insulation on hermetic lead wires for use in refrigerant systems. To prevent cracking of such insulation when it is contacted by a varnish used to provide hermetic sealing, it can be covered by a thin layer of a fluoropolymer.

    摘要翻译: 含有热塑性芳族聚酯,优选聚对苯二甲酸丁二醇酯和重结晶温度大于150℃的聚酯嵌段共聚物,优选含有芳族聚酯嵌段和脂族聚酯嵌段的热塑性弹性体的聚合物组合物。 嵌段共聚物与芳族聚酯的比例为0.05:1〜0.35:1,优选为0.15:1〜0.30:1。 这些组合物特别适用于用于制冷系统的密封导线上的绝缘。 为了防止在与用于提供气密密封的清漆接触时这种绝缘体的破裂,可以被含氟聚合物的薄层覆盖。

    Polyester compositions
    4.
    发明授权
    Polyester compositions 失效
    聚酯组合物

    公开(公告)号:US5908887A

    公开(公告)日:1999-06-01

    申请号:US275174

    申请日:1994-07-14

    摘要: Novel polyester compositions, particularly suitable for the insulation of wires, contain an aromatic polyester, especially polybutylene terephthalate. The presence of certain tin (II) compounds, for example tin (II) oxide, oxalate, phthalate, pyromellitate, or phosphite, reduces the flammability and smoke generation of such compositions. The presence of an aliphatic polyester, and optionally a thermoplastic elastomer, can also improve the properties of such compositions.

    摘要翻译: 特别适用于电线绝缘的新型聚酯组合物含有芳族聚酯,特别是聚对苯二甲酸丁二醇酯。 某些锡(II)化合物,例如氧化锡(II),草酸盐,邻苯二甲酸盐,均苯四酸盐或亚磷酸盐的存在降低了这些组合物的可燃性和烟雾产生。 脂族聚酯和任选的热塑性弹性体的存在也可以改善这些组合物的性质。