POE弹性体改性沥青的结构与性能

研究了聚烯烃弹性体（POE）改性沥青的结构和性能,考察了POE用量对两种基质沥青常规性能的影响,并用光学显微镜观察了POE在沥青中的分布状态。结果表明,随着POE用量增加,沥青的软化点增加,25℃针入度减小,高温性能变好。通过储存稳定性实验发现,POE改性沥青后稳定性较差。POE改性沥青相结构研究发现,随着POE用量的增加,POE由分散相变为连续相,POE质量分数为6%时,基质沥青发生相转变。

Structure and properties of POE modified asphalt

Polyolefin elastomer（POE） modified asphalt was studied.Two different base asphalts were mixed with POE at various contents.The properties and morphology of the modified asphalt were characterized by classical test methods and optical microscope.The results indicated that POE could improve the conventional properties of base asphalt,while the hot storage stable tests showed a poor compatibility with asphalt.The research of the phase structure showed that,dispersed POE granules changed to continuous phase with its increasing content,the phase transition began at about 6% polymer content.