Polypropylene nanocomposites
    3.
    发明申请
    Polypropylene nanocomposites 审中-公开
    聚丙烯纳米复合材料

    公开(公告)号:US20070093592A1

    公开(公告)日:2007-04-26

    申请号:US11305728

    申请日:2005-12-15

    IPC分类号: C08K5/00

    摘要: The present invention relates to a polypropylene nanocomposite comprising (a) about 1 wt % to about 40 wt % of an acid- or acid anhydride-modified polypropylene; (b) about 0.1 wt % to about 50 wt % of an organically modified layered silicate; and (c) about 30 wt % to about 90 wt % of a nonpolar polypropylene, wherein the acid- or anhydride-modified polypropylene has a molecular weight that is lower than that of the nonpolar polypropylene, and wherein the polypropylene nanocomposite has a linear thermal expansion coefficient ranging from about 4×10−5/° C. to about 9×10−5/° C. The density and linear thermal expansion coefficient of these nanocomposites are, respectively, 10% to 20% and 20% to 40% less than conventional polypropylene composites and can be used to form durable molded products with superior dimensional stability, good tensile strength, good moldability, and high thermal resistance.

    摘要翻译: 本发明涉及一种聚丙烯纳米复合材料,其包含(a)约1重量%至约40重量%的酸或酸酐改性的聚丙烯; (b)约0.1重量%至约50重量%的有机改性层状硅酸盐; 和(c)约30重量%至约90重量%的非极性聚丙烯,其中所述酸或酸酐改性的聚丙烯的分子量低于非极性聚丙烯的分子量,并且其中所述聚丙烯纳米复合材料具有线性热 膨胀系数范围为约4×10 -5 /℃至约9×10 -5 /℃。这些纳米复合材料的密度和线性热膨胀系数分别为10 比常规聚丙烯复合材料低20%至20%至40%,可用于形成具有优异的尺寸稳定性,良好的拉伸强度,良好的成型性和高耐热性的耐用的模制产品。