柔性固化剂对环氧沥青结构和性能影响的研究  

Study on Effects of Flexible Curing Agent on the Structure and Performance of Epoxy-asphalt

作　　者：周威[1] 赵辉[1] 文俊 蔡芳昌[1] 马宁[1] 蒋涛[1] 

机构地区：[1]湖北大学功能材料绿色制备与应用教育部重点实验室,武汉430062 [2]湖北省交通工程检测中心,武汉430051

出　　处：《武汉理工大学学报》2011年第7期28-31,共4页Journal of Wuhan University of Technology

摘　　要：采用活性增容剂、固化剂、基质沥青和环氧树脂熔融共混,制备得到一种环氧沥青。讨论了固化剂含量对沥青和环氧树脂相容性、所制备的环氧沥青固化体系撕裂断面、力学性能及耐候性能的影响。研究发现,固化剂可以进一步将沥青以1μm大小的球状分散在环氧树脂中,所得到的环氧沥青固化体系撕裂断面呈层状(皮状)破裂。随着固化剂含量的增加,材料对钢板的粘结强度、拉伸强度和断裂伸长率均先升高后降低,经冻融循环后,材料的各项力学强度降低幅度随固化剂含量的增加而降低。当固化剂含量为15～17份时,钢板的粘结强度为47.8MPa,拉伸强度最高可达1.94MPa,断裂伸长率为464%。A serious of epoxy-asphalts were prepared by active compatibilizer,flexible curing agent,pure asphalt and epoxy.The effects of curing agent on the compatibilities of epoxy-asphalt,torn section,mechanical properties and weather resistance performance were discussed in details.There were found,with the helping of curing agent,asphalt dispersed in epoxy resin at the size of about 1 μm,the torn section of epoxy-asphalt curing system was layered or skin-like fracture.Increasing curing agent,the bond strength,tensile strength and elongation at break had a trend of decline after rising.After a freeze-thaw cycle,the mechanical strength decreased.When curing agent was 15～17 phr,the bond strength was 47.8 MPa,tensile strength was up to 1.94 MPa,and elongation at break was 464%.

关 键 词：环氧沥青 固化剂 相容性 力学性能 耐候性能 

分 类 号：U414[交通运输工程—道路与铁道工程]