贮存稳定的LDPE/SBS共混物改性沥青的动态力学性能  

Dynamic mechanical property of LDPE/SBS blends modified asphalt

作　　者：高光涛[1] 朱玉堂[1] 张勇[1] 张隐西[1] 王立志 钦兰成 

机构地区：[1]上海交通大学高分子材料研究所,上海200240 [2]江苏江阴中油兴能沥青厂,江苏江阴214400

出　　处：《合成橡胶工业》2003年第4期238-240,共3页China Synthetic Rubber Industry

基　　金：国家"863"计划资助项目(2002AA335100)。

摘　　要：利用应变控制流变仪对LDPE/SBS共混物改性沥青的动态力学性能进行了研究,考察了反应剂及其用量,LDPE/SBS共混物用量等对改性沥青高温性能的影响。结果表明,LDPE/SBS共混物的加入提高了原始沥青的高温模量,同时降低了其损耗角正切值,并且随着共混物用量的增加,沥青的高温性能也随之提高,温度敏感性也显著减弱。反应剂的加入使得沥青高温性能得到了更进一步的改善,改善程度随反应剂用量的增加而更加明显。The dynamic mechanical properties of the LDPE/SBS blends modified asphalt were studied with a strain-controlled rheometer. The effect of the reactive agent and the content of the reactive agent and the LDPE/SBS blends on the performance of the asphalt at high temperature were studied. The addition of the reactive agent to the LDPE/SBS blends modified asphalt improved the complex modulus of the original asphalt at high temperature and decreased the tan δ.With increasing the content of the LDPE/SBS blends, the performance of the asphalt at high temperature increased, while the temperature susceptivity decreased. The addition of the reactive agent further increased the performance of the asphalt at high temperature.

关 键 词：LDPE/SBS共混物 改性沥青 动态力学性能 应变控制流变仪 

分 类 号：TQ316.6[化学工程—高聚物工业]