Xuebin Liu, Yixiang Wang, Xiao Zheng, Dezhi Han, Qinqin Zhang
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Research progress on polyurethane-modified epoxy resins for road applications
With rapid economic development in China, new and aging road infrastructure is susceptible to premature distresses like potholes under environmental and traffic loading, posing safety risks. Although epoxy resins for crack repair materials exhibit favorable adhesion and mechanics, polyurethanes are emerging for roads to enhance the durability and wear resistance of epoxy resins. This paper summarizes polyurethane-modified epoxy resins for pavement repair, referring to their mechanical properties, adhesive properties, durability and toughness, corrosion resistance, and heat resistance. The polyurethane modification mechanism and the effect of curing agent on the properties of polyurethane-modified epoxy resins are discussed. Polyurethane-modified epoxy resins show potential to combine the strengths of both polyurethanes and epoxy resins for advanced pavement repair materials.
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