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首页> 外文会议>International symposium on polymer physics : Preprints >MORPHOLOGICAL EVOLUTION DURING TENSILE DEFORMATION OF THE ORIENTED POLYETHYLENE AND POLYPROPYLENE
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MORPHOLOGICAL EVOLUTION DURING TENSILE DEFORMATION OF THE ORIENTED POLYETHYLENE AND POLYPROPYLENE

机译：定向聚乙烯和聚丙烯拉伸变形过程中的形貌演化

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摘要

@@The mechanical performance of polymers is one of the most important aspects for their application. Although a wealth of work has been done investigating the deformation mechanism of polymers, there are still some details under discussion, e.g. the factors controlled the slow crack growth (SCG) speed in polyethylene pipes [1, 2] and the plastic deformation process of semi-crystalline polymers [3,4]. To certain extend, the mechanical performance is affected by the morphology in samples. In this work, we performed synchrotron small angle Xray scattering (SAXS) experiments during the tensile deformation of oriented polyethylene and polypropylene. In the case of oriented polyethylene, we aimed to simulate the fibrils in the crazes based on the knowledge that near a crack tip there is always a craze structure consisting of highly stretched fibrils connecting the crack surfaces.
机译：聚合物的机械性能是其应用中最重要的方面之一。尽管已经完成了许多研究聚合物变形机理的工作，但仍在讨论一些细节，例如这些因素控制着聚乙烯管中慢速裂纹扩展（SCG）的速度[1，2]和半结晶聚合物的塑性变形过程[3,4]。在一定程度上，机械性能受样品形态的影响。在这项工作中，我们在定向聚乙烯和聚丙烯的拉伸变形过程中进行了同步加速器小角度X射线散射（SAXS）实验。在定向聚乙烯的情况下，我们基于在裂纹尖端附近始终存在由连接裂纹表面的高拉伸原纤维组成的裂纹结构的知识，旨在模拟裂纹中的原纤维。

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  • 会议地点 Xiamen(CN);Xiamen(CN)
  • 作者

    Yujing Tang; Zhiyong Jiang; Yongfeng Men;

  • 作者单位

    State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Renmin Street 5625,130022 Changchun,PR China;

    State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Renmin Street 5625,130022 Changchun,PR China;

    State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Renmin Street 5625,130022 Changchun,PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化学（高聚物）;
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