Reaction injection molding of nylon
    3.
    发明授权
    Reaction injection molding of nylon 失效
    尼龙反应注射成型

    公开(公告)号:US4430287A

    公开(公告)日:1984-02-07

    申请号:US400338

    申请日:1982-07-21

    申请人: Peter J. Tilgner

    发明人: Peter J. Tilgner

    摘要: Method and apparatus for molding polymeric materials using the reaction injection mixing (RIM) technique of combining two or more chemically reactive components immediately prior to their introduction into a mold. The invention is more particularly adapted to RIM molding of polyamide (nylon) type polymers, but is also useful for urethane polymers. In either case the polymers may be of the unfilled or of the reinforced type. Modification of conventional RIM technique is made to meet higher component temperature conditions required for nylon molding as compared to urethane polymers, for example. A characterizing feature of the invention is the employment of an attempering "oil tracer" system comprising casings and jackets enclosing the flow paths of each of the several reactive components, and the flow therethrough of a temperature-controlled oil or other fluid medium in heat-exchange but non-fluid communication with the reactive components. Arrangement is made for zoning the component flow paths, and selectively controlling the delivery of attempering oil to different zones whereby to provide flexibility of temperature control at different zones.

    摘要翻译: 使用反应注入混合(RIM)技术来模制聚合材料的方法和装置,其在将两种或更多种化学反应组分引入模具之前将其组合在一起。 本发明更具体地适用于聚酰胺(尼龙)型聚合物的RIM成型,但也适用于聚氨酯聚合物。 在任一种情况下,聚合物可以是未填充的或增强型的。 与氨基甲酸酯聚合物相比,常规RIM技术的改进是为了满足尼龙模塑所需的更高的组分温度条件。 本发明的特征在于采用一种温和的“油追踪器”系统,其包括围绕几个反应组分中的每一个的流动路径的壳体和夹套,以及通过其中的温度控制的油或其它流体介质的流动, 与活性组分进行交换而非流体连通。 为了使组件流动路径分区,并且选择性地控制回火油输送到不同区域,从而提供不同区域的温度控制的灵活性。