Investigation of microstructures and ultraviolet aging properties of organo-montmorillonite/SBS modified bitumen

被引：122

作者：

Zhang, Henglong ^{[1
]}

Yu, Jianying ^{[1
]}

Wang, Huacai ^{[2
]}

Xue, Lihui ^{[2
]}

机构：

[1] Wuhan Univ Technol, Key Lab Silicate Mat Sci & Engn, Minist Educ, Wuhan 430070, Peoples R China

[2] Wuhan Univ Technol, Ctr Mat Res & Anal, Wuhan 430070, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 129卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Composite materials; Elastomers; Fourier transform infrared spectroscopy; Atomic force microscopy; SBS; MORPHOLOGY; ASPHALT; PERFORMANCE; BASE;

D O I：

10.1016/j.matchemphys.2011.04.078

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Organo-montmorillonite(OMMT)/Styrene-butadiene-styrene(SBS) modified bitumen nanocomposites were prepared by melt blending. The microstructures of OMMT/SBS modified bitumen were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and atomic force microscopy (AFM), respectively. The effect of OMMT on ultraviolet (UV) aging properties of SBS modified bitumen was investigated. FTIR and XRD analyses indicate that the OMMT/SBS modified bitumen forms an intercalated structure. It is observed that the phase contrast between the dispersed domains and the matrix is inverted in SBS modified bitumen, which is decreased with the introduction of OMMT according to AFM analysis. As a result of UV aging, both viscosity aging index and softening point increment of OMMT/SBS modified bitumen decrease significantly. There is a single phase trend in the morphology of the bitumen after aging, which is accelerated by the existence of SBS. However, these changes can be effectively prevented under the influence of OMMT, indicating the good UV aging resistance of OMMT/SBS modified bitumen. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：769 / 776

页数：8

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