有机蒙脱土/环氧树脂改性沥青材料的性能  

Properties of Asphalt Modified with Organic Montmorillonite/Epoxy Resin

作　　者：肖新颜[1] 张登科[1] 晏英[1] 朱文强[1] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2015年第2期139-143,150,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金(石油化工联合基金)资助项目(U1162120)~~

摘　　要：以有机蒙脱土(OMMT)改性环氧树脂作为改性剂,采用熔融共混法制备了OMMT/环氧树脂改性沥青材料.采用FT-IR、XRD、荧光显微镜、万能材料试验机、热重分析和布氏黏度计等对相容剂与沥青的相容性及复合改性沥青的微观结构、拉伸强度、断裂伸长率、热稳定性、黏度特性进行了研究.结果表明:OMMT的掺入使环氧树脂在沥青中分散更均匀,OMMT/环氧树脂复合改性沥青形成剥离型结构;OMMT的掺入使复合改性沥青高温性能及力学性能增强;与环氧树脂改性沥青相比,OMMT/环氧树脂改性沥青的起始分解温度和终止温度分别提高了30.1℃和15℃,高温稳定性明显提高;复合改性沥青固化反应黏度增长平缓,更适合道路施工.Organic montmorillonite（ OMMT） / epoxy resin was used to modify asphalt via melt blending,and the compatibility of the compatibilizer and asphalt,as well as the microstructure,tensile strength,break elongation,thermal stability and viscosity-temperature properties of the modified asphalt,was characterized by means of FT-IR,XRD,fluorescent microscopy,universal material testing,TG analysis and Brookfield viscometry. The results show that（ 1） the dispersion of epoxy resin in the modified asphalt becomes more uniform due to the incorporation of OMMT,which results in an exfoliated structure;（ 2） the high-temperature performance and mechanical properties of the modified asphalt improve after the doping of OMMT;（ 3） as compared with the asphalt modified with epoxy resin,the asphalt modified with OMMT / epoxy resin exhibits better thermal stability,with increase of 30. 1℃ and15℃ in initial and final decomposition temperature respctively; and（ 4） the asphalt modified with OMMT / epoxy resin is suitable for road construction due to its gently improved viscosity during the curing process.

关 键 词：有机蒙脱土 环氧树脂 改性沥青 力学性能 热稳定性 

分 类 号：TU535[建筑科学—建筑技术科学]