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    • 2. 发明申请
    • POLYURETHANE/UREA SILICON CARBIDE NANOCOMPOSITE
    • 聚氨酯/尿素碳化硅纳米复合材料
    • WO2017027231A1
    • 2017-02-16
    • PCT/US2016/044747
    • 2016-07-29
    • 3M INNOVATIVE PROPERTIES COMPANY
    • MARX, Ryan E.LOMEDA, Jay R.THOMPSON, Wendy L.DAMTE, Gezahegn D.TARBUTTON, Kent, S.KAYSER, Armin
    • C08K3/34C08K9/06
    • C08K3/34B82Y30/00C01B32/956C01P2004/64C08K3/14C08K9/06C08L75/02C08L75/08C08L2201/08C08L2203/16C08L75/00
    • Polyurethane/urea nanocomposites, precursors thereof, and methods of their manufacture and use are provided, the nanocomposites comprising: a) a polyurethane/urea polymer matrix, and b) surface modified silicon carbide nanoparticles dispersed within and covalently bound to a polyurethane/urea polymer comprising the polyurethane/urea polymer matrix. In some embodiments, the surface modified silicon carbide nanoparticle comprises a silicon carbide core and a linking group covalently bound to the surface of the silicon carbide core and covalently bound to the polyurethane/urea polymer. In some embodiments, the linking group is a moiety according to Formula where the urethane group of the linking group is covalently bound to the polyurethane/urea polymer; and where each open valence of the silicon atom of the linking group is bound to a hydroxyl group (-OH) or is covalently bound to the surface of the silicon carbide core through an oxygen atom.
    • 提供了聚氨酯/尿素纳米复合材料,其前体及其制造和使用方法,所述纳米复合材料包括:a)聚氨酯/脲聚合物基体,以及b)分散在聚氨酯/脲聚合物内并共价结合的表面改性的碳化硅纳米颗粒 包括聚氨酯/脲聚合物基质。 在一些实施方案中,表面改性的碳化硅纳米颗粒包括碳化硅芯和共价结合到碳化硅芯的表面并与聚氨酯/脲聚合物共价结合的连接基团。 在一些实施方案中,连接基团是根据式的部分,其中连接基团的氨基甲酸酯基团与聚氨酯/脲聚合物共价结合; 并且其中连接基团的硅原子的每个开放价态与羟基(-OH)结合或通过氧原子共价结合到碳化硅芯的表面。