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碳纳米管对炭纤维/聚碳酸酯复合材料界面结合性能的影响

刘玉婷 李璐 王嘉沛 费滢洁 刘牛顿 吴刚平

刘玉婷, 李璐, 王嘉沛, 费滢洁, 刘牛顿, 吴刚平. 碳纳米管对炭纤维/聚碳酸酯复合材料界面结合性能的影响[J]. 新型炭材料. doi: 10.19869/j.ncm.1007-8827.20180092
引用本文: 刘玉婷, 李璐, 王嘉沛, 费滢洁, 刘牛顿, 吴刚平. 碳纳米管对炭纤维/聚碳酸酯复合材料界面结合性能的影响[J]. 新型炭材料. doi: 10.19869/j.ncm.1007-8827.20180092
LIU Yu-Ting, LI Lu, WANG Jia-Pei, FEI Ying-Jie, LIU Niu-Dun, WU Gang-Ping. Effect of carbon nanotubes on interfacial property of carbon fiber / polycarbonate composite[J]. NEW CARBOM MATERIALS. doi: 10.19869/j.ncm.1007-8827.20180092
Citation: LIU Yu-Ting, LI Lu, WANG Jia-Pei, FEI Ying-Jie, LIU Niu-Dun, WU Gang-Ping. Effect of carbon nanotubes on interfacial property of carbon fiber / polycarbonate composite[J]. NEW CARBOM MATERIALS. doi: 10.19869/j.ncm.1007-8827.20180092

碳纳米管对炭纤维/聚碳酸酯复合材料界面结合性能的影响

doi: 10.19869/j.ncm.1007-8827.20180092
基金项目: 国家自然科学基金委-山西煤基低碳联合基金(U1810116),山西省科技攻关项目(2015031013),山西省科技重大专项项目(20181101020)
详细信息
    作者简介:

    刘玉婷,硕士。Email:liuyuting@sxicc.ac.cn

    通讯作者:

    吴刚平,博士,研究员。Email:wgp@sxicc.ac.cn

Effect of carbon nanotubes on interfacial property of carbon fiber / polycarbonate composite

Funds: National Natural Science Foundation of China -Shanxi Coal-based Low Carbon Joint Fund (U1810116); Scientific and Technological Project of Shanxi Province (2015031013); Major science and technology projects of Shanxi Province (20181101020)
More Information
    Corresponding author: WU Gang-Ping, Ph. D, Professor. Email: wgp@sxicc.ac.cn
  • 摘要: 为改善炭纤维和聚碳酸酯界面结合性能,本文制备了含碳纳米管的水性聚碳酸酯上浆剂和水性聚氨酯上浆剂,通过上浆工艺将碳纳米管引至炭纤维表面。分别采用单丝段裂法和定向纤维增强聚合物基复合材料垂直方向拉伸两种方法从微观和宏观两个角度研究了上浆剂种类及碳纳米管含量对复合材料界面结合性能的影响。结果表明:上浆剂可明显改善炭纤维/聚碳酸酯复合材料界面结合性能,由于优异的成膜性,聚氨酯上浆剂改善效果更明显;碳纳米管的加入对复合材料的界面性能有一定改善,在微观评价方法中,碳纳米管改善效果显著,因为碳纳米管可有效阻止界面滑移;在宏观评价中,碳纳米管改善效果不明显,主要上浆剂的界面粘结发挥作用。
  • 图  1  含CNTs上浆剂制备及上浆工艺示意图

    Figure  1.  Schematic diagram preparation of sizing agent containing CNTs and the sizing process.

    图  2  样品及受力示意图:单丝段裂法(左);90°拉伸(右)(尺寸单位:mm)

    Figure  2.  The diagram of sample for single filament split method (left); transvers tensile (right) (size in mm).

    图  3  上浆剂处理前后炭纤维表面XPS光谱(上)及C1s窄扫并分峰拟合结果(下)

    Figure  3.  XPS spectra of carbon fiber surface (up) and C1s narrow sweep and peak-splitting fitting results (down) before and after sizing.

    图  4  SEM图像:(a) 未上浆炭纤维CF;(b~f) 为PU上浆剂处理纤维,依次为CF0,CF0.05,CF0.1,CF0.2,CF0.3;(g~j) 为PC上浆剂处理纤维,依次为CF0,CF0.05,CF0.1,CF0.2

    Figure  4.  SEM images of CFs: (a) CF;(b~f) are fibers treated with PU sizing agent, from left to right,CF0,CF0.05,CF0.1,CF0.2,CF0.3;(g~j) are with PU sizing agent, from left to right,CF0,CF0.05,CF0.1,CF0.2.

    图  5  不同炭纤维表面能γ及其各分量

    Figure  5.  Surface energy and corresponding components of CFs.

    图  6  临界饱和状态双折射现象: (a) CF;(b) CF0(WPU);(c) CF0(WPC);(d) CF0.1(WPU);(e) CF0.1(WPC)及断点示意图: (f) 较弱结合;(g) 较强结合

    Figure  6.  Birefringence patterns obtained at the saturation state: (a)CF;(b)CF0(WPU); (c) CF0(WPC); (d) CF0.1(WPU); (e) CF0.1(WPC) and the model diagram of breakpoint morphology: (f) weaker combination, (g) stronger combination.

    图  7  单丝段裂法所测得的界面结合强度

    Figure  7.  The interfacial bonding strength obtained by SFFT.

    图  8  界面结合强度评价方法作用模型:(左)单丝段裂法;(右)90°拉伸

    Figure  8.  The model for evaluation methods of interfacial bonding strength: left) SFFT; right) Transvers tensile.

    表  1  上浆剂处理前后炭纤维表面官能团种类及含量

    Table  1.   The species and contents of functional groups on carbon fiber before and after sizing.

    Functional Group
    (Bind Energy (eV))
    CFWPUWPC
    C=C, C - C (284.4~284.8)80.7948.4776.18
    C - O (286.1~286.5)15.3236.3011.86
    C=O (287.4~288.0)3.8910.21-
    O - C=O (288.4~288.9)-5.028.85
    O - C(O) - O (290.4~290.8)--3.11
    下载: 导出CSV

    表  2  通过原子力显微镜测得炭纤维表面粗糙度Ra (nm)

    Table  2.   The surface roughness of CFs via AFM Ra (nm).

    CNT (wt%)As-received CF00.050.10.20.3
    WPU39.4233.2589.25102.35125.68498.32
    WPC32.9693.65121.37136.98632.69
    下载: 导出CSV

    表  3  CF单丝拉伸性能及Weibull模量

    Table  3.   Tensile properties and Weibull modulus.

    CFWPU WPC
    σf / GPamσf / GPam
    CF2.55 ± 0.526.069 2.55 ± 0.526.069
    CF02.79 ± 0.436.5422.77 ± 0.566.057
    CF0.052.71 ± 0.566.1502.69 ± 0.606.946
    CF0.12.73 ± 0.506.8812.70 ± 0.486.767
    CF0.22.73 ± 0.526.9892.72 ± 0.557.632
    下载: 导出CSV

    表  4  DCAT-21测量不同炭纤维在测试液体动态接触角(单位:°)

    Table  4.   Dynamic contact angle of carbon fibers with two different test liquids via DCAT-21 (Unit is degree).

    CFWPUWPC
    WaterDIMWaterDIM
    CF75.32 ± 0.2440.30 ± 0.1875.32 ± 0.2436.60 ± 0.18
    CF063.38 ± 0.1640.81 ± 0.1563.98 ± 0.1540.35 ± 0.10
    CF0.0564.29 ± 0.1936.45 ± 0.1664.32 ± 0.1936.42 ± 0.15
    CF0.164.67 ± 0.1936.38 ± 0.1564.75 ± 0.2136.29 ± 0.13
    CF0.265.07 ± 0.2336.35 ± 0.1665.04 ± 0.1936.29 ± 0.20
    下载: 导出CSV

    表  5  定向CF/PC复合材料垂直拉伸结果

    Table  5.   The results of vertical direction stretching for CF/PC composite.

    CFWPU WPC
    σt/MPa Increase/% Et/GPaσt/MPaIncrease/% Et/GPa
    CF49.02 ± 2.67-1.79 ± 0.09 49.02 ± 2.67-1.79 ± 0.09
    CF057.65 ± 2.0817.611.88 ± 0.0557.77 ± 2.1117.852.14 ± 0.06
    CF0.0558.40 ± 1.8919.141.96 ± 0.0858.02 ± 2.5518.361.72 ± 0.09
    CF0.159.56 ± 2.6021.501.78 ± 0.0958.40 ± 2.8619.131.61 ± 0.09
    CF0.255.51 ± 2.9213.241.52 ± 0.0854.60 ± 1.2511.381.49 ± 0.09
    CF0.346.52 ± 2.35-5.101.51 ± 0.0544.10 ± 2.27-10.041.57 ± 0.06
    注:Et为拉伸模量,σt为拉伸强度。
    下载: 导出CSV
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  • 收稿日期:  2021-01-01
  • 修回日期:  2021-01-01
  • 网络出版日期:  2021-04-06

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