【摘要】 综述了纳米SiO₂改性水性聚氨酯（WPU）的背景和改性原理。目前纳米SiO₂改性水性聚氨酯常用且较成熟的三种方法:溶胶-凝胶法、共混法以及原位接枝聚合法。对这三种改性水性聚氨酯的方法进行分类概括,阐述近年来在这三种方法中用纳米SiO₂改性水性聚氨酯的研究进展。更多还原

【Abstract】 This paper reviews the background and modification principle of waterborne polyurethane（ WPU）modified by nano-SiO₂. There are three methods which are currently used and mature in nano-SiO₂ modifying waterborne polyurethane including sol-gel method, blending method and in-situ graft polymerization method. This paper summarizes the three methods and shows the research progress of researchers using nano-SiO₂ modifying waterborne polyurethane in these three methods.更多还原