SBS改性沥青相态结构的参数化表征方法  

Parametric Characterization Method for Morphological Structure of SBS Modified Asphalt

作　　者：娄可可 康爱红[1] 寇长江[1] 

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225009

出　　处：《材料科学与工程学报》2016年第4期638-642,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(51108402)

摘　　要：聚合物改性沥青是典型的两相共混物,相态结构分析是研究其改性机理和改性效果最直接、最有效的方法。为参数化表征SBS改性沥青的相态结构,通过荧光显微系统对沥青观测样本进行图像采集,运用专业软件对荧光显微图像进行预处理并提取聚合物相显微形态参数,对4种典型的显微形态参数长短轴之比最大值、面积百分率、分形维数、最大面积代表值进行量化分析。结果表明:最大面积代表值较其他参数更适合表征SBS改性沥青的相态结构。当聚合物最大面积代表值小于2500μm2时,改性沥青一般形成沥青相连续而聚合物相分散结构;当最大面积代表值大于15000μm2时,一般形成聚合物相连续而沥青相分散结构,即网络结构。荧光显微分析为SBS改性沥青相态结构的参数化表征提供了技术手段。Polymer modified asphalt is a typical biphase blend. Phase structure analysis of the blend is the most directive and effective way to study the modification mechanism and effect. In order to make quantitative characterization of the phase structure possible, four morphological parameters were extracted from fluorescent microscopic images of SBS modified asphalt through professional software. Results indicated that representative value of the maximum area was more suitable than the other parameters to characterize the phase structure of SBS modified asphalt. When representative value of the maximum area of the polymer particles is smaller than 2500μm^2 , polymer phase would be dispersed in asphalt background. When this value is up to or greater than 15000μm^2 , continuous polymer phase and dispersed asphalt phase structure would be formed. Fluorescent microscopy analysis method in this study provides a way to characterize SBS modified asphalt phase structure.

关 键 词：SBS改性沥青 显微参数 相态结构 参数化表征 

分 类 号：U414[交通运输工程—道路与铁道工程]