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取向碳纳米管/环氧树脂复合薄膜制备及结构与性能表征

李强 殷新意 于妍妍 杨文刚 吕卫帮

李强, 殷新意, 于妍妍, 等. 取向碳纳米管/环氧树脂复合薄膜制备及结构与性能表征[J]. 复合材料学报, 2021, 38(9): 2767-2775. doi: 10.13801/j.cnki.fhclxb.20210215.003
引用本文: 李强, 殷新意, 于妍妍, 等. 取向碳纳米管/环氧树脂复合薄膜制备及结构与性能表征[J]. 复合材料学报, 2021, 38(9): 2767-2775. doi: 10.13801/j.cnki.fhclxb.20210215.003
LI Qiang, YIN Xinyi, YU Yanyan, et al. Preparation and characterization of aligned carbon nanotubes/epoxy composite films[J]. Acta Materiae Compositae Sinica, 2021, 38(9): 2767-2775. doi: 10.13801/j.cnki.fhclxb.20210215.003
Citation: LI Qiang, YIN Xinyi, YU Yanyan, et al. Preparation and characterization of aligned carbon nanotubes/epoxy composite films[J]. Acta Materiae Compositae Sinica, 2021, 38(9): 2767-2775. doi: 10.13801/j.cnki.fhclxb.20210215.003

取向碳纳米管/环氧树脂复合薄膜制备及结构与性能表征

doi: 10.13801/j.cnki.fhclxb.20210215.003
详细信息
    通讯作者:

    吕卫帮,博士,研究员,博士生导师,研究方向为纳米复合材料  E-mail:wblv2013@sinano.ac.cn

  • 中图分类号: TB332

Preparation and characterization of aligned carbon nanotubes/epoxy composite films

  • 摘要: 碳纳米管(Carbon nanotube, CNT)/环氧树脂(Epoxy resin, EP)纳米复合材料中树脂含量、分布、CNT取向及其与树脂间界面结合是制备高性能纳米复合材料的关键因素。为了探究树脂分布和CNT/EP复合材料性能之间的关系,采用浮动催化化学气相沉积法制备的CNT薄膜和EP为原料,通过浸渍、牵伸、清洗和热压固化工艺制备CNT/EP复合薄膜。利用聚焦离子束结合扫描电子显微镜定性表征树脂在复合膜中的分布状态。结果表明,随着树脂含量增加,树脂在复合薄膜表面富集程度增加。在最优工艺条件下制备的纳米复合材料中CNT含量为66.14wt%, 拉伸强度和拉伸模量达到1405 MPa和46.7 GPa。

     

  • 图  1  不同CNTF/EP复合膜力学性能代表性拉伸曲线

    Figure  1.  Representative tensile curves of mechanical properties of different CNTF/EP composite films

    图  2  不同CNTF/EP复合膜拉伸强度和拉伸模量柱状图

    Figure  2.  Histogram of tensile strength and modulus of different CNTF/EP composite films

    图  3  不同CNTF/EP复合膜TGA曲线

    Figure  3.  TGA curves of different CNTF/EP composite films

    图  4  5wt%、10wt%、15wt%树脂溶液浸渍后CNTF/EP复合膜表面形貌((a)~(c))和截面形貌((d)~(f))

    Figure  4.  Surface ((a)-(c)) and section morphology ((d)-(f)) of CNTF/EP composite film after 5wt%, 10wt% and 15wt% resin solution impregnation

    图  5  CNTF/5%EP、CNTF/10%EP、CNTF/15%EP牵伸20%后力学性能代表曲线

    Figure  5.  Representative tensile curves of mechanical properties of CNTF/5%EP, CNTF/10%EP and CNTF/15%EP after 20% stretched

    图  6  CNTF/5%EP、CNTF/10%EP、CNTF/15%EP牵伸20%后拉伸强度和拉伸模量柱状图

    Figure  6.  Histogram of tensile strength and modulus of CNTF/5%EP, CNTF/10%EP and CNTF/15%EP after 20% stretched

    图  7  不同CNTF/10%EP复合膜力学性能代表性拉伸曲线

    Figure  7.  Representative tensile curves of the mechanical properties of different CNTF/10%EP composite films

    图  8  CNTF/10%EP复合膜拉伸强度和拉伸模量柱状图

    Figure  8.  Histogram of tensile strength and modulus of CNTF/10%EP composite film

    图  9  牵伸率10%、20%、30%CNTF/EP复合膜表面形貌((a)~(c));牵伸30%洗去树脂后表面形貌(d);再次浸渍5wt%树脂溶液CNTF/EP复合膜表面、截面形貌((e)、(f))

    Figure  9.  Surface morphology of CNTF/EP composite film with stretched 10%, 20% and 30% ((a)-(c)); Surface morphology of CNTF/EP composite film with 30% stretched after resin washing(d); Surface and section morphology of the CNTF/EP composite film impregnated with 5wt% resin solution again ((e), (f))

    图  10  不同牵伸率CNTF/EP复合膜偏光拉曼曲线

    Figure  10.  Polarizing Raman curves of CNTF/EP composite films with different stretching rates

    图  11  再次浸渍5%wt树脂溶液后CNTF/EP复合膜应力-应变曲线

    Figure  11.  Stress-strain curves of CNTF/EP composite film impregnated with 5wt% resin solution again

    表  1  取向碳纳米管薄膜/环氧树脂(CNTF/EP)复合膜树脂含量

    Table  1.   Resin content of aligned carbon nanotube film/epoxy resin (CNTF/EP) composite film

    NameSampleResin content /wt%
    CNTF/5%EP CNTF impregnated 5wt% EP solution 27.29
    CNTF/10%EP CNTF impregnated 10wt% EP solution 50.91
    CNTF/15%EP CNTF impregnated 15wt% EP solution 55.64
    CNTF/5%EP (20%S) CNTF/5%EP stretched 20% -
    CNTF/10%EP (20%S) CNTF/10%EP stretched 20% -
    CNTF/15%EP (20%S) CNTF/15%EP stretched 20% -
    CNTF/10%EP (30%S) CNTF/10%EP stretched 30% -
    CNTF/10%EP (30%S-W) CNTF/10%EP stretched 30% washed by acetone 18.91
    CNTF/10%EP (30%S-W-5%EP) CNTF/10%EP (30%S-W) impregnated 5wt% EP solution again 33.86
    Notes:“W”means washing; 20%S and 30%S are stretching rates.
    下载: 导出CSV

    表  2  CNTF/EP复合薄膜力学性能

    Table  2.   Mechanical properties of CNTF/EP composite films

    SampleFracture force/NStrength/MPaModulus/GPaStrain at break/%
    CNTF/5%EP 2.88-3.65 400-450 13.5-16 14.30-19.72
    CNTF/10%EP 3.9-5.75 570-620 20-22 4.23-5.90
    CNTF/15%EP 4.08-5.84 490-510 18-21 3.59-4.77
    CNTF/5%EP (20%S) 4.72-5.49 580-650 18-22 5.54-8.48
    CNTF/10%EP (20%S) 5.64-6.51 950-1040 40-49 3.86-4.38
    CNTF/15%EP (20%S) 5.27-6.37 750-820 27-31 3.96-4.74
    CNTF/10%EP (30%S) 4.36-5.44 581-651 21-24 5.94-6.01
    CNTF/10%EP (30%S-W) 5.71-6.99 1005-1044 31-33 3.71-6.23
    CNTF/10%EP (30%S-W-5%EP) 6.33-7.06 1300-1600 47-54 3.85-4.72
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-11-05
  • 修回日期:  2021-01-07
  • 录用日期:  2021-01-22
  • 网络出版日期:  2021-02-18
  • 刊出日期:  2021-09-01

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