LDPE/SBR复合改性沥青的贮存稳定性  

Storage Stability of Asphalt Modified by LDPE/SBR

作　　者：高光涛[1] 张隐西[2] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042 [2]上海交通大学高分子材料研究所,上海200240

出　　处：《塑料工业》2007年第5期53-57,共5页China Plastics Industry

基　　金：国家"863"计划资助项目(2002AA335100)

摘　　要：比较了直接添加LDPE、SBR改性沥青与LDPE/SBR熔融共混物改性沥青的高温贮存稳定性,并利用光学显微镜观察了各种改性沥青在高温下随时间的变化。结果表明:直接添加LDPE、SBR所得到的改性沥青,其高温贮存稳定性很差。而采用预先制备含有部分共聚物的LDPE/SBR共混物所得到的改性沥青能够在高温下稳定贮存。同时,相形态观察也表明,这种共混物改性沥青的高温相形态也不随时间变化,这一点与稳定性测试结果想吻合。The storage stabilities of the asphalts modified by LDPE, SBR and LDPE/SBR at high temperature were compared, and the changes of the modified asphalts at high temperature were studied by means of optical mi- croscope. The results showed the storage stability of the asphalts modified by LDPE, SBR at high temperature was very poor, while the storage stability of the asphalts modified by the mixture of LDPE/SBR blends was good at high temperature. The result of the morphology analysis indicated that the phase structure of this modified asphalts did not change with the time at high temperature.

关 键 词：贮存稳定 高密度聚乙烯 SBR 共混物 改性沥青 

分 类 号：U414[交通运输工程—道路与铁道工程]