Polyetherimide miscible polymer blends for capacitor films

    公开(公告)号:US10147541B2

    公开(公告)日:2018-12-04

    申请号:US14898228

    申请日:2015-10-01

    Abstract: A uniaxially-stretched, high yield extruded capacitor film comprising a miscible polymer blend comprising a polyetherimide and a poly(carbonate-arylate ester), wherein the polyetherimide comprises units derived from polymerization of an aromatic dianhydride with a diamine comprising a m-phenylenediamine, a p-phenylenediamine, or combinations thereof, wherein the polyetherimide is endcapped with a substituted or unsubstituted aromatic primary monoamine, wherein the poly(carbonate-arylate ester) comprises repeating bisphenol carbonate units and repeating arylate ester units, wherein the repeating bisphenol carbonate units and the repeating arylate ester units are different from each other, and wherein the high yield extruded capacitor film comprises equal to or greater than about 90 wt. % of the miscible polymer blend entering an extruder used for manufacturing the capacitor film, based on the total weight of miscible polymer blend prior to entering the extruder.

    DUAL LAYER WIRE COATINGS
    4.
    发明申请
    DUAL LAYER WIRE COATINGS 审中-公开
    双层线涂

    公开(公告)号:US20160196912A1

    公开(公告)日:2016-07-07

    申请号:US14910363

    申请日:2014-05-09

    Abstract: Coatings, especially dual-layer composite coatings, for elongated electrically conductive wire can have a dissipation factor that is less than 1%, when tested at 1 KHz at room temperature and 50% relative humidity. The composite thermoplastic coating can include two distinct layers, one layer preferably being a thermoplastic polyetherimide (PEI) and another layer preferably being a thermoplastic perfluoroalkoxy (PFA). The ratio of the thickness of PEI/PFA can range from more than zero to less than 5.4. The thickness of the composite plastic coating can range from more than zero to less than 200 micrometers. Methods for forming the coatings and coated wires are also described.

    Abstract translation: 当在室温和50%相对湿度下以1KHz进行测试时,用于细长导电线的涂层,特别是双层复合涂层可具有小于1%的耗散因子。 复合热塑性涂层可以包括两个不同的层,一层优选为热塑性聚醚酰亚胺(PEI),另一层优选为热塑性全氟烷氧基(PFA)。 PEI / PFA的厚度比可以在0以上至5.4以下。 复合塑料涂层的厚度可以在大于零至小于200微米的范围内。 还描述了形成涂层和涂覆线的方法。

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