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PAN基炭纤维径向结构高温演变机制及其与力学性能的关系

阮如玉 叶联葳 冯海 徐樑华 王宇

阮如玉, 叶联葳, 冯海, 徐樑华, 王宇. PAN基炭纤维径向结构高温演变机制及其与力学性能的关系[J]. 新型炭材料, 2020, 35(3): 295-306. doi: 10.1016/S1872-5805(20)60491-7
引用本文: 阮如玉, 叶联葳, 冯海, 徐樑华, 王宇. PAN基炭纤维径向结构高温演变机制及其与力学性能的关系[J]. 新型炭材料, 2020, 35(3): 295-306. doi: 10.1016/S1872-5805(20)60491-7
RUAN Ru-yu, YE Lian-wei, FENG Hai, XU Liang-hua, WANG Yu. High temperature evolution of the microstructure in the radial direction of PAN-based carbon fibers and its relationship to mechanical properties[J]. NEW CARBON MATERIALS, 2020, 35(3): 295-306. doi: 10.1016/S1872-5805(20)60491-7
Citation: RUAN Ru-yu, YE Lian-wei, FENG Hai, XU Liang-hua, WANG Yu. High temperature evolution of the microstructure in the radial direction of PAN-based carbon fibers and its relationship to mechanical properties[J]. NEW CARBON MATERIALS, 2020, 35(3): 295-306. doi: 10.1016/S1872-5805(20)60491-7

PAN基炭纤维径向结构高温演变机制及其与力学性能的关系

doi: 10.1016/S1872-5805(20)60491-7
基金项目: 装备预研教育部联合基金(6141A02033231,6141A02033223);国防基础科研计划(JCKY2018110C139);中央高校基本科研业务费基地项目(JD1907).
详细信息
    作者简介:

    阮如玉,博士生.E-mail:sdfcrry@163.com

    通讯作者:

    王宇,博士.E-mail:wangy@mail.buct.edu.cn;徐樑华,教授.E-mail:xulh@mail.buct.edu.cn

  • 中图分类号: TQ342.+74

High temperature evolution of the microstructure in the radial direction of PAN-based carbon fibers and its relationship to mechanical properties

Funds: Joint Fund of the Ministry of Education for Pre-research (6141A02033231, 6141A02033223), Basic Research Plan (JCKY2018110C139), Fundamental Research Funds for the Central Universities (JD1907).
  • 摘要: 为了研究高温处理条件下炭纤维径向结构的演变规律及其对力学性能的影响,采用Raman光谱仪、元素分析仪、X射线衍射仪、高分辨透射电子显微镜、原子力显微镜和力学性能测试仪等表征方法,系统地对不同温度处理后的炭纤维进行结构解析。结果表明,由于纤维在高温处理过程中热解与重组同时发生,炭纤维径向结构的变化可分为两个阶段。第一阶段为处理温度低于1 700℃时的径向结构差异随处理温度升高而减小的阶段,此阶段热裂解对径向结构差异的影响起主导作用。第二阶段为处理温度高于1 700℃的径向结构差异随处理温度升高而增大的阶段,此阶段结构重组对径向结构差异的影响起主导作用。受径向结构差异的影响,炭纤维拉伸强度随处理温度的升高,呈现先增大后减小的趋势,经1 700℃处理后的炭纤维径向结构趋于均质,拉伸强度达到最大。依据炭纤维石墨化程度与炭微晶大小的关系,炭纤维皮层炭微晶为纤维径向上最规整、最完整的碳结构,因此炭纤维拉伸模量主要取决于皮层大尺寸且高取向的炭微晶。
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出版历程
  • 收稿日期:  2020-02-27
  • 修回日期:  2020-04-29
  • 刊出日期:  2020-06-28

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