Effect of layered double hydroxides on ultraviolet aging resistance of SBS modified bitumen membrane

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• 作者：Song Xu ; Jianying Yu ; Lihui Xue…
• 关键词：SBS modified bitumen ; layered double hydroxides ; UV aging
• 刊名：Journal of Wuhan University of Technology--Materials Science Edition
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：30
• 期：3
• 页码：494-499
• 全文大小：349 KB
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• 作者单位：Song Xu (1)
  Jianying Yu (1)
  Lihui Xue (2)
  Yubin Sun (2)
  Dong Xie (3)
  
  1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China
  2. Center for Materials Research and Analysis, Wuhan University of Technology, Wuhan, 430070, China
  3. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Chinese Library of Science
  
• 出版者：Wuhan University, co-published with Springer
• ISSN：1993-0437

文摘

Layered double hydroxides (LDHs)/styrene-butadiene-styrene (SBS) copolymer modified bitumen was prepared by melt blending. The effect of LDHs on the ultraviolet (UV) aging behavior of SBS modified bitumen was investigated. The changes of chemical structures of modified bitumen before and after UV aging were characterized by Fourier transform infrared spectroscopy (FTIR). The results show that LDHs obviously reduce the variation of softening point and low temperature flexibility of SBS modified bitumen under different UV radiation intensities, which indicates that the UV aging resistance performance of SBS modified bitumen is improved effectively by LDHs. Compared with SBS modified bitumen, the changes of carbonyl, sulfoxide and butadienyl of LDHs/SBS modified bitumen decrease significantly after UV aging according to FTIR analysis, demonstrating that the oxidation and degradation reactions of SBS modified bitumen were restrained effectively by adding LDHs.