Prepreg, process for producing the same and printed circuit substrate using the same
    22.
    发明公开
    Prepreg, process for producing the same and printed circuit substrate using the same 失效
    预浸料,制备过程和印刷电路板基板及其用途

    公开(公告)号:EP0768334A2

    公开(公告)日:1997-04-16

    申请号:EP96116329.2

    申请日:1996-10-11

    Abstract: The present invention provides a lightweight prepreg having uniform formation, low linear thermal expansion coefficient and good mechanical strength, comprising a porous para-oriented aromatic polyamide film and a thermoplastic resin and/or a thermosetting resin, the porous para-oriented aromatic polyamide film being impregnated with the thermoplastic resin and/or the thermosetting resin, a process for producing the same, and a printed circuit substrate/board using the same.
    A process for producing for producing a prepreg comprising a porous para-oriented aromatic polyamide film and a thermoplastic resin and/or a thermosetting resin, the porous para-oriented aromatic polyamide film being impregnated with the thermoplastic resin and/or thermosetting resin, which comprises the following steps (a) to (d):

    step (a) of forming a film-like material from a solution containing 1 to 10% by weight of a para-oriented aromatic polyamide having an inherent viscosity of 1.0 to 2.8 dl/g and 1 to 10% by weight of a chloride of an alkaline metal or an alkaline earth metal in a polar amide solvent or a polar urea solvent;
    step (b) of maintaining the film-like material at a temperature of not less than 20°C or not more than -5°C to deposit the para-oriented aromatic polyamide from the film-like material;
    step (c) of immersing the film-like material obtained in the step (b) in an aqueous solution or an alcoholic solution to elute the solvent and the chloride of the alkaline metal or alkaline earth metal, followed by drying to obtain a para-aramid porous film; and
    step (d) of impregnating the porous film obtained in the step (c) as a substrate with the thermoplastic resin and/or thermosetting resin to produce a prepreg.

    Abstract translation: 本发明提供具有均匀形成,低线性热膨胀系数和良好的机械强度,包括多孔对位取向芳香族聚酰胺薄膜和热塑性树脂和/或热固性树脂,该多孔对位取向芳香族聚酰胺薄膜感轻质预浸渍体 浸渍有热塑性树脂和/或热固性树脂,其制造方法,以及使用其的印刷电路基板/电路板。 一种生产用于生产预浸料,其包括多孔对位取向芳香族聚酰胺薄膜和热塑性树脂和/或热固性树脂,处理该多孔对位取向的芳族聚酰胺薄膜中浸渍有热塑性树脂和/或热固性树脂,该方法包括 以下步骤(a)至(d):工序(a)形成由(重量)具有以1.0固有粘度的对位取向芳香族聚酰胺的含有1至10%的溶液的薄膜状材料制成,以2.8升/克 和1〜10%(重量)的碱金属或碱土金属的氯化物在极性酰胺系溶剂或极性尿素溶剂; 步骤(b)在不低于20℃的温度或不膜状材料的保持超过-5℃来沉积从薄膜状材料的对位取向芳香族聚酰胺; 在浸渍步骤(b)中得到的薄膜状材料以wässrige溶液或在醇溶液中进行干燥以获得一个对位,以洗脱溶剂和碱金属或碱土金属的氯化物,随后的步骤(c) 芳族聚酰胺多孔膜; 和浸渍的步骤(d)的多孔膜得到的在步骤(c)为与热塑性树脂和/或热固性树脂以生产的预浸料的基片。

    Laminated synthetic mica articles
    26.
    发明公开
    Laminated synthetic mica articles 失效
    Gegenständeaus laminiertem synthetischen Glimmer。

    公开(公告)号:EP0285714A1

    公开(公告)日:1988-10-12

    申请号:EP87303056.3

    申请日:1987-04-08

    Inventor: Wu, Shy-Hsien

    Abstract: Laminated synthetic mica articles are disclosed that have particular applicability as substrates in electronic components. The articles comprise a core of stacked and consolidated, synthetic mica sheets that are impregnated with resin, and a copper foil sealed to a face on the article. Adherence of the copper foil is enhanced by use of a micaceous facing layer and bonding sheet, both being resin-impregnated and the resin cure being advanced beyond the normal B-stage level before assembly. Insulation resistance is enhanced by providing an advanced resin coating on the copper foil before assembly. Use of a bismaleimide triazine and epoxy mixed resin is also disclosed whereby a transformation temperature (Tg) of about 200°C. is obtained.

    Abstract translation: 公开了具有作为电子部件中的基材的特殊适用性的复合合成云母制品。 这些制品包括用树脂浸渍的堆叠和固结的合成云母片的芯,以及密封在制品上的面上的铜箔。 通过使用云母面层和粘合片,在组装之前树脂浸渍和树脂固化超过正常的B阶段水平,提高了铜箔的粘附性。 通过在组装之前在铜箔上提供先进的树脂涂层来提高绝缘电阻。 还公开了双马来酰亚胺三嗪和环氧树脂混合树脂的使用,由此获得约200℃的转变温度(Tg)。

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