Polyurethane nanocomposites
    3.
    发明授权
    Polyurethane nanocomposites 有权
    聚氨酯纳米复合材料

    公开(公告)号:US09540479B2

    公开(公告)日:2017-01-10

    申请号:US12978699

    申请日:2010-12-27

    摘要: Polyurethane nanocomposites are provided which include a polyurethane and surface modified silica nanoparticles covalently bound into the polyurethane. High loadings in excess of 30% may be achieved. In some embodiments, the silica nanoparticles are covalently bound to the polyurethane polymer through a linkage derived from a surface-modifying compound comprising a silane functional group and a polyol segment. In some embodiments the polyurethane nanocomposite may be provided as a tape or film. In addition, precursors for a polyurethane nanocomposites are provided comprising: a first polyol and surface modified silica nanoparticles dispersed within the first polyol. In some embodiments, the silica nanoparticles are surface-modified by reaction with a surface-modifying compound comprising a silane functional group and a polyol segment derived from a second polyol, which may be the same or different from the first polyol.

    摘要翻译: 提供聚氨酯纳米复合材料,其包括共聚在聚氨酯中的聚氨酯和表面改性的二氧化硅纳米粒子。 可以实现超过30%的高负荷。 在一些实施方案中,二氧化硅纳米颗粒通过源自包含硅烷官能团和多元醇链段的表面改性化合物的连接键与聚氨酯聚合物共价结合。 在一些实施方案中,聚氨酯纳米复合材料可以作为带或膜提供。 此外,提供了聚氨酯纳米复合材料的前体,其包含:分散在第一多元醇内的第一多元醇和表面改性的二氧化硅纳米颗粒。 在一些实施方案中,二氧化硅纳米颗粒通过与包含硅烷官能团的表面改性化合物和衍生自可与第一多元醇相同或不同的第二多元醇的多元醇部分的反应进行表面改性。