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碳纤维轴向导热性能表征及其影响因素

王婷婷 顾轶卓 王绍凯 李敏 方泽农 张佐光

王婷婷, 顾轶卓, 王绍凯, 等 . 碳纤维轴向导热性能表征及其影响因素[J]. 北京航空航天大学学报, 2017, 43(9): 1931-1938. doi: 10.13700/j.bh.1001-5965.2016.0757
引用本文: 王婷婷, 顾轶卓, 王绍凯, 等 . 碳纤维轴向导热性能表征及其影响因素[J]. 北京航空航天大学学报, 2017, 43(9): 1931-1938. doi: 10.13700/j.bh.1001-5965.2016.0757
WANG Tingting, GU Yizhuo, WANG Shaokai, et al. Characterization on axial thermal conductivity of carbon fiber and its influence factors[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(9): 1931-1938. doi: 10.13700/j.bh.1001-5965.2016.0757(in Chinese)
Citation: WANG Tingting, GU Yizhuo, WANG Shaokai, et al. Characterization on axial thermal conductivity of carbon fiber and its influence factors[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(9): 1931-1938. doi: 10.13700/j.bh.1001-5965.2016.0757(in Chinese)

碳纤维轴向导热性能表征及其影响因素

doi: 10.13700/j.bh.1001-5965.2016.0757
基金项目: 

国家自然科学基金 51563013

技术基础科研项目 JSZL2015601C001

详细信息
    作者简介:

    王婷婷  女, 硕士研究生; 主要研究方向:聚合物基复合材料

    王绍凯  男, 博士, 讲师; 主要研究方向:聚合物基复合材料

    通讯作者:

    王绍凯, E-mail:wsk@buaa.edu.cn

  • 中图分类号: TB332;V45

Characterization on axial thermal conductivity of carbon fiber and its influence factors

Funds: 

National Natural Science Foundation of China 51563013

Technical Basic Project JSZL2015601C001

More Information
  • 摘要:

    对比分析了采用碳纤维集束和基于单向复合材料的碳纤维轴向导热性能测试方法的差异性,研究了纤维体积分数、试样厚度等对导热测试的影响,分析了聚丙烯腈基高强型、高模型碳纤维和中间相沥青基碳纤维对该测试方法的适用性,考察了碳纤维轴向导热性能与其结构关联规律。结果表明,由于纤维向树脂的传热作用,单向复合材料试样比碳纤维集束试样具有更低的热扩散系数,采用碳纤维集束试样可获得准确的纤维导热系数,而基于单向复合材料计算得到的纤维导热系数偏高。纤维体积分数越高、试样厚度越大,基于单向复合材料计算得到的碳碳纤维导热系数越大;采用碳纤维集束试样测试碳纤维导热系数时,碳纤维体积分数变化对碳纤维热扩散系数、导热系数测试结果影响不大。中间相沥青基碳纤维、高模型碳纤维、高强型碳纤维导热系数依次降低,晶面间距越小、晶粒尺寸越大,碳纤维导热系数越高。研究结果对准确表征碳纤维导热性能、设计高导热复合材料具有重要指导意义。

     

  • 图 1  用于导热系数测试的碳纤维集束试样及其复合材料形貌

    Figure 1.  Morphology of carbon fiber bundle sample and its composite for thermal conductivity measurement

    图 2  不同纤维体积分数和试样厚度单向复合材料热扩散系数与导热系数及计算的碳纤维导热系数

    Figure 2.  Thermal diffusivity and conductivity of unidirectional composite and calculated thermal conductivity of carbon fiber under different fiber volume fraction and sample thickness

    图 3  不同碳纤维体积分数和试样厚度碳纤维集束热扩散系数与导热系数及计算的碳纤维导热系数

    Figure 3.  Thermal diffusivity and conductivity of fiber bundle and calculated thermal conductivity of carbon fiber under different fiber volume fraction and sample thickness

    图 4  单向复合材料与碳纤维集束试样上表面温升信号与时间关系曲线

    Figure 4.  Upper surface temperature rise signal versus time curves for unidirectional composite and carbon fiber bundle

    图 5  典型的聚丙烯腈基和中间相沥青基碳纤维的热扩散系数和导热系数

    Figure 5.  Thermal diffusivity and thermal conductivity of typical PAN-based and mesophase pitch-based carbon fibers

    图 6  M55J和XN-90-60S碳纤维集束试样上表面温升信号与时间关系曲线

    Figure 6.  Upper surface temperature rise signal versus time curves for M55J and XN-90-60S carbon fiber bundle

    图 7  典型的聚丙烯腈基和中间相沥青基碳纤维截面形貌

    Figure 7.  Cross-sectional morphology of typical PAN-based and mesophase pitch-based carbon fibers

    表  1  XRD测试的5种碳纤维微结构参数

    Table  1.   Microstructural parameters of five carbon fibers in XRD test

    碳纤维类型 d002/nm Lc/nm
    T700 0.3548 1.56
    T800 0.3473 1.91
    M40J 0.3428 3.25
    M55J 0.3424 8.31
    XN-90-60S 0.3385 14.83
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-09-26
  • 录用日期:  2016-12-23
  • 刊出日期:  2017-09-20

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