Thermoset rigid rod molecular composite system
    2.
    发明授权
    Thermoset rigid rod molecular composite system 失效
    热固性刚性棒分子复合体系

    公开(公告)号:US5095075A

    公开(公告)日:1992-03-10

    申请号:US625505

    申请日:1990-12-11

    摘要: Provided is a molecular composite comprising a rigid-rod aromatic heterocyclic polymer, a flexible, coil-like thermoplastic polymer and a thermosetting polymer.Also provided is a method for fabricating a molecular composite film or fiber which comprises the steps of forming a biphasic, stir opalescent solution of a rigid-rod aromatic heterocyclic polymer, a thermoplastic polymer, a thermosetting polymer and a solvent which is common to the three polymers, adding solvent to the solution until the solution becomes isotropic and stir opalescence has ceased to determine the critical concentration of polymers in the solvent, adding additional solvent to the solution so that the polymer concentration is below the critical concentration, extruding the solution into a non-solvent for the polymers to form the desired film or fiber, drying the film or fiber and hot drawing the film or fiber at a temperature above the Tg of the thermoplastic, but below the polymerization temperature (Tpoly) of the thermosetting resin.

    摘要翻译: 提供了包含刚性 - 芳族芳族杂环聚合物,柔性卷曲状热塑性聚合物和热固性聚合物的分子复合材料。 还提供了一种制造分子复合膜或纤维的方法,其包括以下步骤:形成刚性棒状芳族杂环聚合物的双相,搅拌乳白色溶液,热塑性聚合物,热固性聚合物和三元共聚的溶剂 聚合物,向溶液中加入溶剂,直到溶液变为各向同性,并且搅动乳光已经停止确定聚合物在溶剂中的临界浓度,向溶液中加入另外的溶剂,使得聚合物浓度低于临界浓度,将溶液挤出成 用于形成所需膜或纤维的非溶剂,干燥膜或纤维,并且在高于热塑性塑料的Tg但低于热固性树脂的聚合温度(Tpoly)的温度下热拉薄膜或纤维。