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    Filtering membranes on the basis of welded polymer structures and method for manufacture thereof
    62.
    发明申请
    Filtering membranes on the basis of welded polymer structures and method for manufacture thereof 失效
    基于焊接聚合物结构的过滤膜及其制造方法

    公开(公告)号：US20030150790A1

    公开(公告)日：2003-08-14

    申请号：US10058157

    申请日：2002-01-29

    发明人： Vladimir Prutkin

    IPC分类号： B01D063/00

    CPC分类号： B29C65/02 ,  B01D67/0023 ,  B01D67/0027 ,  B01D69/00 ,  B01D69/12 ,  B01D2325/02 ,  B29C65/16 ,  B29C66/1122 ,  B29C66/43 ,  B29C66/438 ,  B29C66/54 ,  B29C66/71 ,  B29C66/727 ,  B29C66/73772 ,  B29C66/73776 ,  B29C66/73921 ,  B29C66/8322 ,  B29L2024/00 ,  B29L2031/14 ,  B29L2031/737 ,  Y10T156/1052 ,  Y10T156/1084 ,  B29K2023/0633 ,  B29K2023/12 ,  B29K2025/06 ,  B29K2027/06 ,  B29K2069/00

    摘要： The filtering membranes of the present invention are made from a pair of polymer films stretched in a liquid surface-active medium for the formation of crazes filled with the aforementioned medium. The crazed films are perforated and then stack together in a stretched or released state and are welded together into a sealed structure with a plurality of parallel welding seams arranged, e.g., in mutually perpendicular directions, so that a plurality of sealed cells is formed. The cells have on one side of the membrane input openings and on the other side output openings. If an input opening is in one cell, then an output opening is in the adjacent cell. Adjacent cells are interconnected only through the welding seams. Welding can be carried out by contact heating or with the use of a laser beam, or the like. The material of the welding seam has an amorphous structure. The substance captured inside the crazes may comprise a dispersion medium used for fixing dimensions of the crazes or a substance for treating the fluid being filtered. In operation, the medium to be filtered diffuses from the input cells to the output cells of the membrane through the material of the welding seams. Filtering is enhanced if the material of the seams has aforementioned crazes. In such a membrane, the total length of the welding seams on the area of 1 m2 may reach several hundred thousand meters. The membrane possesses selectivity sufficient for separation of two or multiple-component mixtures in a single-stage process. Depending on the method used for preparation of the polymer-film surface prior to welding, the membrane filter may have efficiency from 5 to 40,000 kg/m2nullD.

    摘要翻译： 本发明的过滤膜由用于形成填充有上述介质的裂纹的液体表面活性介质中拉伸的一对聚合物膜制成。 被穿孔的薄膜穿孔，然后在拉伸或释放状态下堆叠在一起，并且通过多个平行的焊接接缝焊接在一起形成密封结构，例如在相互垂直的方向上布置，从而形成多个密封的电池。 电池在膜输入开口的一侧和另一侧的输出口上。 如果输入开口位于一个单元格中，则输出开口位于相邻单元格中。 相邻的电池仅通过焊缝相互连接。 焊接可以通过接触加热或使用激光束等进行。 焊缝的材料具有无定形结构。 捕获在碎裂内的物质可以包括用于固定切片尺寸的分散介质或用于处理被过滤的流体的物质。 在操作中，待过滤的介质通过焊缝的材料从输入单元扩散到膜的输出单元。 如果接缝的材料具有上述的裂纹，则过滤被增强。 在这种膜中，1m 2的焊缝的总长度可以达到几十万米。 该膜具有足够的选择性，用于在单级方法中分离两种或多种组分的混合物。 根据用于在焊接之前制备聚合物膜表面的方法，膜过滤器可以具有5至40,000kg / m 2·xD的效率。