New Research Progress of Modification of Waterborne Polyurethane

Waterborne polyurethane(WPU) had a widely application in the field such as construction,coatings,electrical insulation and defense.However,the special performance of the waterborne polyurethane can not meet the needs of most user duing to the introduction of hydrophilic groups in the synthesis of the polyurethane.Many attention has been paid to improve the water and oil resistance,chemical resistance,weather resistance of WPU.Several modification methods for waterborne polyurethane,including organosilicone modification,organofluorine modification,acrylate modification,epoxy resin modification and nano-material modification WPU,are summarized.And the future development trend of modified WPU is expected.