石墨烯橡胶复合改性沥青流变性能及微观性能

为提高橡胶改性沥青的流变性能,采用动态剪切流变(DSR)试验,对石墨烯掺量不同的石墨烯橡胶复合改性沥青宏观力学性能变化规律进行研究,并结合电动荧光显微镜(E FM)、傅里叶变换红外光谱仪(FTIR),探究石墨烯橡胶复合改性沥青微观结构组成的变化规律.结果表明：与橡胶改性沥青相比，添加石墨烯的橡胶改性沥青具有更高的弹性恢复能力和抗变形能力,其流变性能有所提高;石墨烯橡胶复合改性沥青的荧光显微相态分布均匀且呈连续形貌,说明其存储稳定性和相容性得到了提升;石墨烯橡胶复合改性沥青中芳环CC含量相对增加,说明其力学性能有所提高.

Rheological and Microscopic Properties of Graphene Rubber Composite Modified Asphalt

In order to improve the rheological properties of rubber modified asphalt, the feasibility of graphene rubber composite modified asphalt was studied. Dynamic shear rheological(DSR) test combined with electrodynamic fluorescence microscopy(E FM) and Fourier transform infrared spectrometer(FTIR) was used to study the macro mechanical properties of graphene rubber modified asphalt with different content of graphene, FTIR was used to investigate the change of the microstructure of rubber modified asphalt. The results show that the addition of graphene can improve the elastic recovery and deformation resistance of rubber modified asphalt, and improve its rheological properties. The fluorescence microscopy of graphene rubber composite modified asphalt shows uniform distribution and continuous morphology in the electro fluorescence microscope, which indicates that the storage stability of rubber modified asphalt is improved. In infrared spectroscopy, the addition of graphene makes rubber and asphalt more compatible. The relative increase of CC content indicates that its mechanical properties are improved.