【摘要】 应用四组分分析法、热重分析法(TGA)和示差量热扫描法(DSC)对氯化聚乙烯改性沥青(PMB-CPE)的热性能进行了研究。结果表明,与基质沥青相比,PMB-CPE中沥青的组分含量发生了变化,饱和分和芳香分含量减少,胶质和沥青质含量增加;PMB-CPE在起始热分解阶段的失重速率降低,热稳定性提高;PMB-CPE的吸热焓减少,对温度的敏感性降低。更多还原

【Abstract】 The thermal behavior of chlorinated polyethylene(CPE)modified bitumen(PMB-CPE)samples were characterized by four components analytical method,TGA and DSC thermal analysis.The result showed that as compared with the base bitumen,the contents of saturates and aromatics in the PMB-CPE decreased;the contents of resin and asphaltene increased.The improvements in thermal stability and temperature sensitivity of bitumen by adding CPE were indicated from the decrease of mass loss rate in the initial thermal decomposition stage and the decrease of endothermic enthalpy,respectively.更多还原