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Contribution of surface roughness and oxygen-containing groups to the interfacial shear strength of carbon fiber/epoxy resin composites

LIANG Yi-cai ZHANG Xing-hua WEI Xing-hai JING De-qi SU Wei-guo ZHANG Shou-chun

梁乙偲, 张兴华, 魏兴海, 经德齐, 苏维国, 张寿春. 表面粗糙度和含氧官能团对炭纤维/环氧树脂界面黏结的贡献. 新型炭材料(中英文), 2023, 38(6): 1116-1126. doi: 10.1016/S1872-5805(23)60720-6
引用本文: 梁乙偲, 张兴华, 魏兴海, 经德齐, 苏维国, 张寿春. 表面粗糙度和含氧官能团对炭纤维/环氧树脂界面黏结的贡献. 新型炭材料(中英文), 2023, 38(6): 1116-1126. doi: 10.1016/S1872-5805(23)60720-6
LIANG Yi-cai, ZHANG Xing-hua, WEI Xing-hai, JING De-qi, SU Wei-guo, ZHANG Shou-chun. Contribution of surface roughness and oxygen-containing groups to the interfacial shear strength of carbon fiber/epoxy resin composites. New Carbon Mater., 2023, 38(6): 1116-1126. doi: 10.1016/S1872-5805(23)60720-6
Citation: LIANG Yi-cai, ZHANG Xing-hua, WEI Xing-hai, JING De-qi, SU Wei-guo, ZHANG Shou-chun. Contribution of surface roughness and oxygen-containing groups to the interfacial shear strength of carbon fiber/epoxy resin composites. New Carbon Mater., 2023, 38(6): 1116-1126. doi: 10.1016/S1872-5805(23)60720-6

表面粗糙度和含氧官能团对炭纤维/环氧树脂界面黏结的贡献

doi: 10.1016/S1872-5805(23)60720-6
基金项目: 山西省重点研发计划(202003D111002);山西省科技重大专项计划(202101040201003);国家自然科学基金(51903249);中国科学院山西煤炭化学研究所创新基金项目(SCJC-XCL-2022-12)
详细信息
    通讯作者:

    张寿春,研究员. E-mail:zschun@sxicc.ac.cn

  • 中图分类号: TQ127.1+1

Contribution of surface roughness and oxygen-containing groups to the interfacial shear strength of carbon fiber/epoxy resin composites

Funds: This work was supported by the Key Research and Development Program of Shanxi Province (202003D111002), Major Science and Technology Project in Shanxi Province (202101040201003); the National Natural Science Foundation of China (51903249) and the Innovation Fund Project of Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences (SCJC-XCL-2022-12)
More Information
  • 摘要: 炭纤维(CF)与基体之间的界面黏结对CF增强聚合物复合材料的性能至关重要。为了评估机械啮合和化学键合对炭纤维增强环氧树脂(EP)复合材料界面黏附性能的贡献,分离了炭纤维的表面粗糙度和含氧官能团以研究它们对界面黏附的影响。结果表明,氨水处理提高了表面粗糙度而不改变化学性能,而电化学处理在不改变表面粗糙度的情况下提高了化学性能。采用微滴法测试了CF/EP的界面剪切强度(IFSS),并通过线性拟合得到了IFSS与表面粗糙度和氧含量之间的函数关系。结果表明,在双官能和四官能环氧树脂体系中,化学键合对于增强界面黏附的贡献因子高于机械互锁。
  • FIG. 2783.  FIG. 2783.

    FIG. 2783..  FIG. 2783.

    Figure  1.  SEM images of CFs: (a) CF0, (b) A-CF1, (c) A-CF2, (d) A-CF3, (e) A-CF4, (f) A-CF5, (g) E-CF1, (h) E-CF2, (i) E-CF3 and (j) E-CF4

    Figure  2.  AFM images of CFs: (a) CF0, (b) A-CF1, (c) A-CF2, (d) A-CF3, (e) A-CF4 and (f) A-CF5

    Figure  3.  XPS wide spectra of the CFs

    Figure  4.  C1s XPS spectra of the CFs

    Figure  5.  The tensile strength of CFs after ammonia treatment

    Figure  6.  Variation of IFSS in bifunctional epoxy systems (a) with surface roughness and (b) with the O1s content on surface

    Figure  7.  Variation of IFSS in tetrafunctional epoxy systems (a) with the surface roughness and (b) with the O1s content on surface

    Table  1.   Average roughness (Ra) values of the CFs obtained from the AFM

    SampleCF0A-CF1A-CF2A-CF3A-CF4A-CF5
    Ra/nm10.212.213.214.317.222.4
    下载: 导出CSV

    Table  2.   Elemental content of the CFs surface

    SampleElement content/%
    CNOO/C
    CF088.892.458.669.74
    A-CF188.712.678.629.72
    A-CF290.391.977.648.45
    A-CF390.502.017.498.28
    A-CF489.262.488.269.25
    A-CF589.102.368.549.58
    E-CF187.013.199.8011.26
    E-CF285.932.7311.3413.20
    E-CF383.383.1513.4716.15
    E-CF481.682.8915.4318.89
    下载: 导出CSV

    Table  3.   Relative contents of functional groups on the surface of CFs

    SampleRelative content of functional groups (%)
    C―CC―OC=O―COO
    CF088.436.114.211.24
    A-CF188.296.173.701.84
    A-CF288.446.603.271.68
    A-CF390.046.242.101.62
    A-CF489.716.372.291.63
    A-CF589.216.352.941.51
    E-CF185.988.821.843.37
    E-CF283.9310.491.464.12
    E-CF381.9112.330.725.04
    E-CF476.7614.561.507.18
    下载: 导出CSV

    Table  4.   Dynamic contact angle and surface free energies of CFs

    SampleContact angle/(°)Surface energy/(mN/m)
    Deionized waterγ
    CF0 76.27±0.49 37.80±0.33
    A-CF1 75.60±0.50 38.20±0.31
    A-CF2 75.00±0.17 38.60±0.10
    A-CF3 73.77±0.67 39.40±0.41
    A-CF4 72.27±0.61 40.30±0.38
    A-CF5 70.40±0.53 41.50±0.33
    E-CF1 68.50±1.82 42.70±1.13
    E-CF2 64.10±0.61 45.30±0.39
    E-CF3 61.20±0.78 47.10±0.48
    E-CF4 56.83±0.15 49.80±0.10
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-11-04
  • 录用日期:  2023-01-06
  • 修回日期:  2023-01-05
  • 网络出版日期:  2023-01-17
  • 刊出日期:  2023-11-23

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