华南理工大学学报(自然科学版) ›› 2013, Vol. 41 ›› Issue (6): 116-120.doi: 10.3969/j.issn.1000-565X.2013.06.018

• 材料科学与技术 • 上一篇    下一篇

有机蒙脱土/废胶粉复合改性沥青的性能

肖新颜 杨泽清   

  1. 华南理工大学 化学与化工学院,广东 广州 510640
  • 收稿日期:2012-12-19 修回日期:2013-01-22 出版日期:2013-06-25 发布日期:2013-05-03
  • 通信作者: 肖新颜(1964-),男,教授,博士生导师,主要从事聚合物纳米复合材料研究. E-mail:cexyxiao@scut.edu.cn
  • 作者简介:肖新颜(1964-),男,教授,博士生导师,主要从事聚合物纳米复合材料研究.
  • 基金资助:

    石油化工联合基金资助项目(U1162120)

Properties of Organic Montmorillonite/Crumb Rubber Compound Modified Asphalt

Xiao Xin-yan Yang Ze-qing   

  1. School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2012-12-19 Revised:2013-01-22 Online:2013-06-25 Published:2013-05-03
  • Contact: 肖新颜(1964-),男,教授,博士生导师,主要从事聚合物纳米复合材料研究. E-mail:cexyxiao@scut.edu.cn
  • About author:肖新颜(1964-),男,教授,博士生导师,主要从事聚合物纳米复合材料研究.
  • Supported by:

    石油化工联合基金资助项目(U1162120)

摘要: 采用熔融共混法制备了有机蒙脱土( OMMT) /废胶粉复合改性沥青,通过 X 射线衍射( XRD) 分析和原子力显微镜( AFM) 分析表征了复合改性沥青的微观结构,研究了复合改性沥青的物理性能、抗热氧老化性能和热储存稳定性.结果表明: OMMT 的掺入使废胶粉在沥青中的分散更加均匀,OMMT/废胶粉复合改性沥青形成剥离结构; 与废胶粉改性沥青相比,OMMT/废胶粉复合改性沥青的高温性能得到改善,随着 OMMT 掺量的增加,软化点大幅升高,25℃针入度及5℃延度减小; 与废胶粉改性沥青相比,OMMT/废胶粉复合改性沥青的抗热氧老化性能和热储存稳定性明显提高.

关键词: 有机蒙脱土, 废胶粉, 沥青, 抗热氧老化性能, 热储存稳定性

Abstract:

Organic montmorillonite (OMMT) /crumb rubber compound modified asphalt was prepared via melt blending,and the microstructure of the product was characterized and analyzed by means of XRD and AFM.More-over,the physical properties,thermal oxidative aging properties and thermal storage stability of the product were in-vestigated.The results show that (1) the dispersion of crumb rubber in the modified asphalt becomes more uniform and an exfoliated structure forms due to the doping of OMMT; (2) as compared with the crumb rubber modified as-phalt,OMMT/crumb rubber compound modified asphalt is of improved high- temperature performances,for in-stance,with the increase of OMMT dosage,the softening point sharply increases,and the penetration (25℃) and the ductility (5℃) both decrease; and (3) after the doping of OMMT,both the thermal oxidative aging properties and the thermal storage stability of the compound modified asphalt improve significantly.

Key words: organic montmorillonite, crumb rubber, asphalt, thermal oxidative aging property, thermal storage stability

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