近年来,聚氨酯(PU)改性沥青以其优异的路用性能和储存稳定性,引起人们的关注。介绍了PU的合成原理及改性沥青的原理,根据PU的性质将改性沥青分为热固性和热塑性PU改性沥青两大类,并分别对两类PU改性沥青的研究进展进行分析,特别指出原材料对PU改性沥青性能的影响。最后,展望了PU改性沥青的发展方向。
In recent years,polyurethane (PU) modified asphalt has attracted a lot of attention and research due to its excellent road performance and storage stability.The modification mechanism of PU modified asphalt,PU modified asphalt binder and PU modified asphalt mixture were expounded.The synthetic principle of PU and the principle of modified asphalt were introduced.According to the properties of PU,the modified asphalt can be divided into two categories:thermosetting and thermoplastic PU modified asphalt.The research progress of two kinds of PU modified asphalt was analyzed,and especially pointed out the influence of raw materials on the properties of PU modified asphalt.Finally,the development direction of PU modified asphalt was prospected.
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基金资助
陕西省交通运输厅交通科研项目(17-06K);塑料卫生与安全质量评价技术北京市重点实验室开放基金(QETHSP2020003)
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