国产T800级碳纤维/环氧树脂复合材料湿热性能

隋晓东 熊舒 朱亮 李烨 李娜

隋晓东, 熊舒, 朱亮, 李烨, 李娜. 国产T800级碳纤维/环氧树脂复合材料湿热性能[J]. 航空材料学报, 2019, 39(3): 88-93. doi: 10.11868/j.issn.1005-5053.2018.000138
引用本文: 隋晓东, 熊舒, 朱亮, 李烨, 李娜. 国产T800级碳纤维/环氧树脂复合材料湿热性能[J]. 航空材料学报, 2019, 39(3): 88-93. doi: 10.11868/j.issn.1005-5053.2018.000138
Xiaodong SUI, Shu XIONG, Liang ZHU, Ye LI, Na LI. Hygrothermal properties of domestic T800 carbonfiber/epoxy composites[J]. Journal of Aeronautical Materials, 2019, 39(3): 88-93. doi: 10.11868/j.issn.1005-5053.2018.000138
Citation: Xiaodong SUI, Shu XIONG, Liang ZHU, Ye LI, Na LI. Hygrothermal properties of domestic T800 carbonfiber/epoxy composites[J]. Journal of Aeronautical Materials, 2019, 39(3): 88-93. doi: 10.11868/j.issn.1005-5053.2018.000138

国产T800级碳纤维/环氧树脂复合材料湿热性能

doi: 10.11868/j.issn.1005-5053.2018.000138
详细信息
    通讯作者:

    隋晓东(1980—),男,硕士,高级工程师,研究方向为复合材料应用,(E-mail)allconquersxd@163.com

  • 中图分类号: TB332

Hygrothermal properties of domestic T800 carbonfiber/epoxy composites

  • 摘要: 采用扫描电镜、红外图谱分析三种国产T800级碳纤维的物理形貌以及表面上浆剂的化学结构。针对三种国产T800级碳纤维(CCF800)/环氧树脂复合材料在湿热环境下的吸湿行为,研究经不同时间湿热和高温环境下处理后的层间剪切性能,并通过扫描电镜观察湿热处理后的复合材料界面结合状态。结果表明:三种国产T800级碳纤维表面物理形貌相同,而表面化学结构存在一定差异;三种碳纤维环氧复合材料的“饱和”吸湿周期相同,约为54 d,95%饱和吸湿周期也相同,约为30 d;而饱和吸湿量存在明显差异,其中3号纤维上浆剂中由于羟基含量最高,导致其环氧树脂基复合材料吸湿率最高,在高温高湿作用下,层间剪切强度下降最为明显。

     

  • 图  1  国产CCF800碳纤维表面形貌扫描电镜图(1)及原子力显微镜图(2)

    Figure  1.  SEM(1)and AFM(2)images of domestic T800 carbon fiber (a)CCF800-1;(b)CCF800-2;(c)CCF800-3

    图  2  CCF800上浆剂的红外曲线

    Figure  2.  IR Spectra of CCF800 sizing agent

    图  3  CCF800/环氧树脂复合材料的吸湿曲线

    Figure  3.  Moisture absorption curves of CCF800/epoxy composite

    图  4  不同测试温度和吸湿条件下的ILSS保持率图

    Figure  4.  ILSS retention rates at different temperatures and moistures

    图  5  150 ℃下试样断面SEM图 (a)干态式样;(b)水浸15 d

    Figure  5.  SEM figures for composite samples after ILSS test at 150 ℃ (a)dry;(b)moisture absorption for 15 d

    表  1  国产CCF800碳纤维表面粗糙度

    Table  1.   Surface roughness of domestic T800 carbon fibers

    Carbon fiberDiameter/μmRoughness/nm
    CCF800-15.2322.4
    CCF800-25.2521.4
    CCF800-35.1723.1
    下载: 导出CSV

    表  2  不同CCF800/环氧树脂复合材料的吸湿参数

    Table  2.   Moisture absorption parameters of different CCF800/EP composites

    MaterialsDiffusion coefficient, D/(10–6 mm2•h–1Saturated moisture content/%Coefficient of association, R2
    CCF800-1/EP0.231.080.9994
    CCF800-2/EP0.261.100.9994
    CCF800-3/EP0.221.150.9995
    下载: 导出CSV

    表  3  不同测试温度和吸湿条件下的层间剪切强度

    Table  3.   Interlaminar shear strengths(ILSS)at different temperatures and moistures

    CompositeTemperature/℃Original15 d30 d
    ILSS/MPaC.V./%ILSS/MPaC.V./%ILSS/MPaC.V./%
    CCF800-1/EP25 94.63.4884.62.1980.43.28
    150 55.53.8944.54.6845.14.82
    CCF800-2/EP25101.23.0997.63.1192.96.15
    150 57.72.5945.31.8345.53.22
    CCF800-3/EP25 98.23.3689.02.0884.82.81
    150 48.53.4129.14.3328.84.10
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-12-10
  • 修回日期:  2019-01-09
  • 网络出版日期:  2019-05-10
  • 刊出日期:  2019-06-01

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