Fabrication of benzbisazole polymers into monolithic articles
    1.
    发明授权
    Fabrication of benzbisazole polymers into monolithic articles 失效
    苯并二唑聚合物制成单片制品

    公开(公告)号:US5326509A

    公开(公告)日:1994-07-05

    申请号:US134194

    申请日:1993-10-07

    摘要: A method for fabricating a monolithic polybenzbisazole article including the steps of:(a) dissolving at least one benzbisazole polymer in a strong acid at an elevated temperature;(b) transferring the resulting solution to a mold;(c) cooling the solution in the mold to a temperature below the gelation temperature of the acid-polymer mixture, thus providing a polymer-acid gel;(d) ageing the gel for about 0.25 to 10 days;(e) replacing the acid in the gel with water;(f) replacing the water in the gel with a lower aliphatic alcohol; and(g) densifying the gel.

    摘要翻译: 一种制造整体式聚苯并咪唑制品的方法,包括以下步骤:(a)在高温下将至少一种苯并咪唑聚合物溶解在强酸中; (b)将所得溶液转移到模具中; (c)将模具中的溶液冷却至低于酸 - 聚合物混合物的凝胶化温度的温度,从而提供聚合物 - 酸性凝胶; (d)将凝胶老化约0.25至10天; (e)用水代替凝胶中的酸; (f)用低级脂肪醇代替凝胶中的水; 和(g)使凝胶致密化。