聚合物改性沥青微观结构与性能关系的研究

Study on Microstructure and Property Relationships of Polymers Modified Bitumen

本文用扫描电子显微镜（ＳＥＭ）研究了ＡＰＰ与ＳＢＳ改性沥青的微观形态结构．测定了这两种改性沥青的物理性能（软化点，延伸度）随改性材料用量的变化规律，着重讨论了形态结构与这些性能变化之间的关系。研究结果表明：ＡＰＰ改性沥青形成了均相结构，ＳＢＳ改性沥青形成了非均相结构，ＡＰＰ和ＳＢＳ对沥青物理性能的改善与改性沥青的微观结构密切相关。

In This paper the morphology of APP modified bitumen and SBS modified bitumen was studied by scanning electron microscopy(SEM) and the morphology-property relationships of these two modified bitumens were discussed. The results indicate that the APP modified bitumen system is a homogeneous phase sturcture and the SBS modifid bitumen system is a heterogeneous phase structure. Improvement of the bituminous physical performances by APP and SBS is closely related with the microstructure of APP and SBS modified bitumen.