贮存稳定的SBS改性沥青动态力学性能  

Dynamic mechanical properties of storage stable SBS modified asphalts

作　　者：温贵安 张勇[1] 陈信忠[1] 张隐西[1] 孙康[2] 陈志勇[2] 

机构地区：[1]上海交通大学高分子材料研究所,上海200240 [2]上海交通大学金属基复合材料国家重点实验室,上海200030

出　　处：《合成橡胶工业》2001年第5期274-277,共4页China Synthetic Rubber Industry

基　　金：国家自然科学基金资助项目(59973011)。

摘　　要：研究了贮存稳定的 SBS改性沥青的动态力学性能，比较了不同 SBS用量、稳定剂用量及 SBS的聚苯乙烯嵌段质量分数对改性沥青的耐高温性能的影响。结果表明：稳定剂的加入增加了改性沥青在高温下的弹性，其温度敏感性明显减弱； SBS用量与稳定剂用量对改性沥青材料的动态力学性能影响显著，随 SBS和稳定剂用量的增加，改性沥青的复合模量增大，损耗角正切随温度升高而趋于不变；在实验范围内， SBS的聚苯乙烯嵌段质量分数对加入稳定剂的改性沥青的动态力学性能影响不大。Dynamic mechanical properties of storage stable SBS modified asphalts were studied. With the addition of the stabilizer, due to the formation of elastic network structure in modified binders, the elasticity of SBS modified asphalt increased and the temperature susceptibility of asphaltic material decreased significantly. The amounts of SBS and stabilizer had great effect on the dynamic mechanical properties of SBS modified asphalt. The complex modulus of modified binders increased with the increase of amounts of SBS and stabilizer, and tan δ trend to be low and unchange at high temperature. By comparing the polystyrene content of SBS, 30% and 40% (mass), there was little effect on the properties of SBS modified asphalt within the given polystyrene contents.

关 键 词：苯乙烯-丁二烯嵌段共聚物 改性沥青 贮存稳定性 动态力学性能 SBS 改性剂 

分 类 号：TQ522.65[化学工程—煤化学工程]