传统聚合物改性沥青路面易因耐久性能不足而出现一系列路面病害。聚氨酯(PU)材料具有较好的弹性、韧性、耐磨性以及抗腐蚀性,利用PU对沥青进行改性取得了较好的效果。简要介绍了PU的合成原料、原理以及结构,综述了PU改性沥青、PU改性乳化沥青、废弃PU改性沥青、生物油基PU改性沥青以及PU复掺改性沥青的性能及应用情况,并展望了其未来的发展趋势。
Traditional polymer-modified asphalt pavements were prone to a series of pavement diseases due to insufficient durability.Polyurethane (PU) materials exhibit good elasticity,toughness,wear resistance and corrosion resistance,and modifying asphalt with PU has achieved good results.This article briefly introduced the synthesis materials,principles,and structure of PU,and reviewed the performance and application of PU-modified asphalt,PU-modified emulsified asphalt,waste PU-modified asphalt,bio-oil-based PU-modified asphalt,and PU composite-modified asphalt.It also provided an outlook on its future development trends.
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基金资助
陕西省自然科学基金资助项目(2024JC-YBMS-309)
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