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基于聚醚砜/氰酸酯半互穿树脂体系的碳纤维复合材料性能研究

许培俊 吴帆 朱真 侯静

许培俊, 吴帆, 朱真, 等. 基于聚醚砜/氰酸酯半互穿树脂体系的碳纤维复合材料性能研究[J]. 复合材料学报, 2022, 39(6): 2639-2648. doi: 10.13801/j.cnki.fhclxb.20210819.003
引用本文: 许培俊, 吴帆, 朱真, 等. 基于聚醚砜/氰酸酯半互穿树脂体系的碳纤维复合材料性能研究[J]. 复合材料学报, 2022, 39(6): 2639-2648. doi: 10.13801/j.cnki.fhclxb.20210819.003
XU Peijun, WU Fan, ZHU Zhen, et al. Research on carbon fiber composite properties based on (polyether sulfone)/ cyanate ester semi-interpenetrating resin system[J]. Acta Materiae Compositae Sinica, 2022, 39(6): 2639-2648. doi: 10.13801/j.cnki.fhclxb.20210819.003
Citation: XU Peijun, WU Fan, ZHU Zhen, et al. Research on carbon fiber composite properties based on (polyether sulfone)/ cyanate ester semi-interpenetrating resin system[J]. Acta Materiae Compositae Sinica, 2022, 39(6): 2639-2648. doi: 10.13801/j.cnki.fhclxb.20210819.003

基于聚醚砜/氰酸酯半互穿树脂体系的碳纤维复合材料性能研究

doi: 10.13801/j.cnki.fhclxb.20210819.003
基金项目: 国家自然科学基金面上项目(51978072);中国博士后基金(2018M643552);长安大学中央高校基本科研业务费专项资金资助(300102319207)
详细信息
    通讯作者:

    许培俊,博士,教授,博士生导师,研究方向为聚合物基复合材料  E-mail:xupeijun@chd.edu.cn

  • 中图分类号: TB332

Research on carbon fiber composite properties based on (polyether sulfone)/ cyanate ester semi-interpenetrating resin system

  • 摘要: 氰酸酯(CE)树脂因具有高玻璃化转变温度、低固化收缩率和优异介电性能,常被作为耐高温或吸波纤维复合材料基体应用于航空航天领域。但由于CE树脂与碳纤维(CF)浸渍黏附性较差、固化温度高、固化物脆性较大,其复合材料制备工艺性较差且固化后易产生分层损伤,严重影响其产品质量及实际应用。本文利用聚醚砜(PES)对CE树脂进行改性,制备出浸润性良好的预浸料以适应各类干法成型复合材料制备工艺。结果表明,PES的引入能够显著提高CF/CE树脂基复合材料的力学性能和热稳定性。与CF/CE单向板相比,7.5wt%PES-CF/CE单向板的弯曲强度提高17%,层间剪切强度提高31%,冲击韧性提高39%,并且纵向热膨胀性系数从−2.07×10−8 K−1降低到−10.7×10−8 K−1,横向热膨胀系数降低20%,改性效果显著。

     

  • 图  1  CF/PES-CE树脂基复合材料弯曲断面形貌

    Figure  1.  Flexural fracture surface morphologies of CF/PES-CE resin matrix composites((a) CF/CE; (b) 2.5wt%CF/PES-CE; (c) 5.0wt%CF/PES-CE; (d) 7.5wt%CF/PES-CE)

    图  2  CF/PES-CE树脂基复合材料的EDS能谱图

    Figure  2.  EDS spectra of CF/PES-CE resin matrix composites((a) CF/CE; (b) 2.5wt%CF/PES-CE; (c) 5.0wt%CF/PES-CE; (d) 7.5wt%CF/PES-CE)

    图  3  CF/PES-CE树脂基复合材料弯曲截面形貌

    Figure  3.  Flexural fracture transversal surface morphologies of CF/PES-CE resin matrix composites ((a) CF/CE; (b) 2.5wt%CF/PES-CE; (c) 5.0wt%CF/PES-CE; (d) 7.5wt%CF/PES-CE)

    图  4  CF/PES-CE树脂基复合材料损耗因子

    Figure  4.  Loss factors of CF/PES-CE composites

    图  5  CF/PES-CE树脂基复合材料热膨胀曲线

    Figure  5.  Thermal expansion curves of CF/PES-CE composites

    dL/L0—Rate of length change; dL—Change in length; L0—Original length

    图  6  CF/PES-CE树脂基复合材料纵向 (a) 和横向 (b) 微分热膨胀系数(diff·CTE)曲线

    Figure  6.  Differential coefficient of thermal expansion (diff·CTE) curves of CF/PES-CE composite in longitudinal (a) and transverse (b) directions

    表  1  碳纤维(CF)/聚醚砜(PES)-氰酸酯(CE)树脂基复合材料的命名

    Table  1.   Naming of carbon fiber (CF)/polyether sulfone (PES)-cyanate ester (CE) resin matrix composite

    Sample Proportion
    PES/wt% CF/CE/wt%
    CF/CE 0 100
    2.5wt%CF/PES-CE 2.5 97.5
    5.0wt%CF/PES-CE 5.0 95.0
    7.5wt%CF/PES-CE 7.5 92.5
    下载: 导出CSV

    表  2  CF/PES-CE树脂基复合材料弯曲性能

    Table  2.   Flexural properties of CF/PES-CE resin matrix composite

    SampleFlexural strength/MPaFlexural modulus/GPa
    CF/CE 1649.6 124.0
    2.5wt%CF/PES-CE 1804.0(9%↑) 124.8(1%↑)
    5.0wt%CF/PES-CE 1926.2(17%↑) 132.7(7%↑)
    7.5wt%CF/PES-CE 1927.5(17%↑) 136.6(10%↑)
    Note: Values in parentheses represent the percentage increase compared to CF/CE composite.
    下载: 导出CSV

    表  3  CF/PES-CE树脂基复合材料层间剪切强度与冲击韧性

    Table  3.   Interlayer shear strength and impact toughness of CF/PES-CE resin matrix composites

    SampleInterlaminar shear strength/MPaImpact strength/(kJ·m-2)
    CF/CE 61.3 248.0
    2.5wt%CF/PES-CE 66.2(8%↑) 268.9(8%↑)
    5.0wt%CF/PES-CE 72.3(18%↑) 288.5(16%↑)
    7.5wt%CF/PES-CE 80.5(31%↑) 346.3(40%↑)
    下载: 导出CSV
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  • 收稿日期:  2021-06-02
  • 修回日期:  2021-07-07
  • 录用日期:  2021-07-30
  • 网络出版日期:  2021-08-20
  • 刊出日期:  2022-06-01

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