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Adhesive surface characteristics of bitumen binders investigated by Atomic Force Microscopy

机译：原子力显微镜研究沥青粘合剂的粘合表面特性

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摘要

Bitumen is a complex hydrocarbon whose composition-structure-property relationship is not well-understood. In this paper, microphase-separated topographic morphologies of unaged penetration grade 70/100 bitumen binders have been visualized by means of AFM QNM, and the relationship to local mechanical properties has been demonstrated. AFM QNM is a surface force mapping technique which measures parameters such as topography, adhesion and elastic modulus simultaneously. The resulting data can then be presented as images representing individual or overlaid parameters, e.g. topographic images with an adhesion overlay or topographic images with a modulus overlay. AFM QNM results show that the adhesive forces measured in the region surrounding (peri phase) the periodic topographic features resembling 'bees' (catana phase) and the region in the 'bee' areas are lower than the adhesive force measured in the smooth matrix (para phase). Likewise it was observed that Young's moduli in the region surrounding (peri phase) the 'bees' (catana phase) and in the 'bees' are higher than Young's modulus of the smooth matrix (para phase).
机译：沥青是一种复杂的碳氢化合物，其组成-结构-性质之间的关系尚不清楚。本文通过AFM QNM观察了未老化渗透等级70/100沥青粘合剂的微相分离形貌，并证明了其与局部力学性能的关系。 AFM QNM是一种表面力测绘技术，可同时测量诸如形貌，附着力和弹性模量等参数。然后，可以将所得数据表示为表示各个参数或叠加参数（例如参数）的图像。附着力覆盖的地形图或模量覆盖的地形图。 AFM QNM结果表明，在类似于``蜂''（catana相）的周期性地形特征周围区域（周相）和``蜂''区域中测量的粘合力低于在光滑基质中测得的粘合力（第阶段）。同样地，观察到在“蜂”周围的区域（周相）（卡塔纳相）和“蜂”周围的区域中的杨氏模量高于光滑矩阵（对位相）的杨氏模量。

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  • 来源
    《Fuel》 |2013年第11期|248-256|共9页
  • 作者

    Asa Laurell Lyne; Viveca Wallqvist; Bjoern Birgisson;

  • 作者单位

    Division of Highway and Railway Engineering, Architecture and the Built Environment, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden;

    SP Technical Research Institute of Sweden, Box 5607, SE-114 86 Stockholm, Sweden;

    Division of Highway and Railway Engineering, Architecture and the Built Environment, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bitumen; AFM; Adhesion; Young's modulus; Topography;

    机译：沥青;原子力显微镜附着力;杨氏模量地形;

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