Thermoplastic processing of unplastifiable polymers
    2.
    发明授权
    Thermoplastic processing of unplastifiable polymers 失效
    不可塑性聚合物的热塑性加工

    公开(公告)号:US5342561A

    公开(公告)日:1994-08-30

    申请号:US888719

    申请日:1992-05-27

    摘要: A process for thermoplastic processing and sintering an unplastifiable polymer comprises dispersing the unplastifiable polymer in powder form in a melt of a polyacetal or a mixture of polyacetals, cooling the resulting mixture, granulating it, forwarding the granules to a thermoplastic processing stage, injection or extrusion molding, exposing the molding to an atmosphere which contains an acidic gas, thereby de-polymerizing the polyacetal, enveloping the remaining porous molding on all sides in a gas/liquid-impermeable film, heating in an autoclave, and isostatically sintering the molding with pressure from all sides to form the finished article.

    摘要翻译: 用于热塑性加工和烧结不可塑性聚合物的方法包括将粉末形式的不可分散聚合物分散在聚缩醛或聚缩醛混合物的熔体中,冷却所得混合物,将其造粒,将颗粒送入热塑性加工阶段,注射或挤出 成型,将成型体暴露在含有酸性气体的气氛中,从而使聚缩醛脱聚合,将气体/液体不可渗透膜中的所有侧面上的剩余的多孔成型体包围,在高压釜中加热,并在压力下等压烧结成型体 从各方形成成品。