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    Ultra high molecular weight polyethylene multifilament yarns, and process for producing thereof
    3.
    发明授权
    Ultra high molecular weight polyethylene multifilament yarns, and process for producing thereof 有权
    超高分子量聚乙烯复丝纱线及其制造方法

    公开(公告)号：US08137809B2

    公开(公告)日：2012-03-20

    申请号：US12933772

    申请日：2009-04-09

    申请人： Roelof Marissen ,  Harm van der Werff ,  Joseph Arnold Paul Maria Simmelink ,  Evert Florentinus Florimondus De Danschutter

    发明人： Roelof Marissen ,  Harm van der Werff ,  Joseph Arnold Paul Maria Simmelink ,  Evert Florentinus Florimondus De Danschutter

    IPC分类号： D02G3/00

    CPC分类号： D01F6/04 ,  Y10T428/2913 ,  Y10T428/2967

    摘要： The invention relates to a gel spun, ultrahigh molecular weight polyethylene (UHMWPE) multifilament yarn characterized in that said yarn comprises individual monofilaments having a coefficient of variation of their linear density, hereafter CVintra, of less than 30%, wherein the CVintra of a monofilament was determined from linear density values corresponding to a number of 20 representative lengths randomly extracted by cutting from said monofilament and using Formula 1 wherein χi is the linear density of any one of the representative lengths extracted from the monofilament under investigation and Formula 1A is the averaged linear density over the n=20 measured linear densities of said n=20 representative lengths. The invention also relates to a gel spun UHMWPE multifilament yarn characterized in that the yarn has a coefficient of variation in linear density between the monofilaments comprising said yarn, hereafter CVinter, of less than 50%. The invention also relates to a gel spinning process of producing thereof characterized in that a chamber is present before the spinning plate such that no further partitioning of the UHMWPE solution takes place before said solution being finally partitioned into individual monofilaments by the spinning plate and in which chamber the solution has a residence time τ at a constant throughput of UHMWPE solution of at least 5 sec. The invention also relates to a rope, net, medical cable or a composite comprising the yarns of the invention.

    摘要翻译： 本发明涉及一种凝胶纺丝超高分子量聚乙烯（UHMWPE）复丝纱线，其特征在于所述纱线包括其线密度变异系数（以下简称CVintra）的单根单丝小于30％，其中单丝的CVintra 由对应于通过从所述单丝切割而随机提取的20个代表性长度的数目的线密度值确定，并且使用公式1，其中χi是从被研究的单丝中提取的任何代表性长度的线密度，而式1A是平均值 所述n = 20个代表性长度的n = 20个线性密度的线密度。 本发明还涉及一种凝胶纺丝UHMWPE复丝纱，其特征在于，所述纱线具有小于50％的包含所述纱线的单丝之间的线密度变化系数（以下称CVinter）。 本发明还涉及其制造的凝胶纺丝方法，其特征在于在纺丝板之前存在室，使得在所述溶液最终通过纺丝板分成单个单丝之前不再进一步分配UHMWPE溶液，其中 室中，溶液在UHMWPE溶液的恒定通量下具有至少5秒的停留时间τ。 本发明还涉及一种绳，网，医用电缆或包含本发明纱线的复合材料。