SBS/环氧树脂复合改性沥青性能研究  

Research on the performance of SBS/epoxy resin composite modified asphalt

作　　者：纪少艳 JI Shaoyan(School of Environmental and Architecture,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学环境与建筑学院,上海200093

出　　处：《新型建筑材料》2025年第2期52-58,共7页New Building Materials

摘　　要：研究了干法SBS/环氧树脂复合改性剂(ER-SBS-T)复合改性沥青老化前后的性能,并与干法SBS、速熔型SBS(SBS-T)改性沥青作对比。结果表明,SBS、SBS-T在掺量为6%时改性沥青的高温性能较佳,而高掺量(12%、15%)ER-SBS-T改性沥青在老化前后均具有最佳的高温性能;原样及老化后,15%掺量ER-SBS-T改性沥青蠕变恢复率和不可恢复蠕变柔量最佳,这表明ER-SBS-T改性沥青路面即使在压力老化、高温、重荷载的条件下,依然能保持优异的抗车辙性能。15%掺量ER-SBS-T改性沥青低温性能较差。ER-SBS-T主要以物理混溶为主,改性剂中的环氧树脂分子与沥青分子交联互穿形成共同抵抗外力破坏的空间网状结构,大幅提高了抗变形性能。The properties of dry process SBS/epoxy resin composite modifier(ER-SBS-T)modified asphalt before and after aging were studied,and compared with dry SBS and fast melting SBS(SBS-T)modified asphalt.The results show that the high temperature performance of SBS and(SBS-T)modified asphalt is better when the content is 6%.High content(12%,15%)ER-SBS-T modified asphalt exhibits the best high-temperature performance before and after aging.The creep recovery rate and unrecoverable creep compliance of ER-SBS-T modified asphalt with a 15%content are optimal both in its original form and after aging.This indicates that the ER-SBS-T modified asphalt pavement can maintain superior resistance to rutting even under pressure aging,high temperature,and heavy load conditions.The low temperature performance of the ER-SBS-T with 15%mixture is poor;ER-SBS-T mainly based on physical miscibility,and the epoxy resin molecules in the modifier were cross-linked and interpenetrating with asphalt molecules to form a spatial network structure that could jointly resist external damage,greatly improving the deformation resistance.

关 键 词：沥青 环氧树脂 SBS 流变性能 红外光谱 

分 类 号：TU535[建筑科学—建筑技术科学]