Research Progress of Waterborne Polyurethane Modification
Waterborne polyurethane has many polar functional groups,which have good adhesion to synthetic materials,especially polar porous materials.It is widely used in adhesives,coatings and surface coatings.However,during use,it has been found that there are shortcomings such as insufficient tensile strength,low heat resistance,and poor water resistance.Based on this,the modification methods of waterborne polyurethane was introduced,including crosslinking modification,acrylic modification,organosilicon modification,epoxy resin modification,and nanomaterial modification.The research progress of various modification methods in the application of adhesives and coatings was also introduced.Finally,some suggestions for the future research direction of waterborne polyurethane were proposed.
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