水性聚氨酯的改性研究

Modification Research of Waterborne Polyurethane

面对近年来全球环保的压力和限制挥发性有机物的排放,低毒无污染、环境友好型的水性聚氨酯越来越受到人们的青睐,然而单一的水性聚氨酯乳液固含量低,耐高温、耐水、耐热性较差,某些程度上限制了使用范围。本文综述了目前国内外水性聚氨酯主要的改性方法:交联改性、丙烯酸酯改性、环氧树脂改性、有机硅改性及纳米粒子改性,同时展望了水性聚氨酯改性研究的发展趋势。

Faced with the pressure of global environmental protection and the restriction of the emission of volatile organic compounds in recent years,the low-toxicity,pollution-free and environment-friendly waterborne polyurethane is more and more popular among people. However,the single waterborne polyurethane emulsion has low solid content,poor resistance to high temperature、water and heat,which limits its use to some extent. This article mainly introduced the main modification methods of waterborne polyurethane at home and abroad： cross-linking modification,acrylate modification,epoxy resin modification,organic silicon modification,organic fluorine modification,nanomaterials modification and prospects the development trend of waterborne polyurethane modified research.