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不同维度的ZnO对MMT-SiC/EP微纳米复合材料电学性能的影响

孙家明 郭宁 唐子凡 王玉龙 李丽丽 高俊国

孙家明, 郭宁, 唐子凡, 等. 不同维度的ZnO对MMT-SiC/EP微纳米复合材料电学性能的影响[J]. 复合材料学报, 2023, 40(9): 5035-5045. doi: 10.13801/j.cnki.fhclxb.20221117.001
引用本文: 孙家明, 郭宁, 唐子凡, 等. 不同维度的ZnO对MMT-SiC/EP微纳米复合材料电学性能的影响[J]. 复合材料学报, 2023, 40(9): 5035-5045. doi: 10.13801/j.cnki.fhclxb.20221117.001
SUN Jiaming, GUO Ning, TANG Zifan, et al. Effect of different dimensions of ZnO on the electrical properties of MMT-SiC/EP micro-nano composites[J]. Acta Materiae Compositae Sinica, 2023, 40(9): 5035-5045. doi: 10.13801/j.cnki.fhclxb.20221117.001
Citation: SUN Jiaming, GUO Ning, TANG Zifan, et al. Effect of different dimensions of ZnO on the electrical properties of MMT-SiC/EP micro-nano composites[J]. Acta Materiae Compositae Sinica, 2023, 40(9): 5035-5045. doi: 10.13801/j.cnki.fhclxb.20221117.001

不同维度的ZnO对MMT-SiC/EP微纳米复合材料电学性能的影响

doi: 10.13801/j.cnki.fhclxb.20221117.001
基金项目: 国家自然科学基金(51577045)
详细信息
    通讯作者:

    高俊国,博士,教授,硕士生导师,研究方向为高压绝缘介电强度及影响机制、阻燃材料阻燃特性、电缆状绝缘态评估与检测 E-mail: gaojunguo@hrbust.edu.cn

  • 中图分类号: TM215.92;TB332

Effect of different dimensions of ZnO on the electrical properties of MMT-SiC/EP micro-nano composites

Funds: National Natural Science Foundation of China (51577045)
  • 摘要: 具有非线性电导特性的电介质被广泛应用于解决许多领域的高能放电问题(如航天器充电和电机绝缘)。本文通过在含有SiC和蒙脱土(MMT)微纳米复合体系中继续添加零维或一维纳米材料来进一步优化复合材料的非线性电导特性及其他电学性能。通过X射线衍射仪对MMT有机化改性前后的层间距进行了表征;通过扫描电子显微镜对复合材料内部各填料的分散情况以及界面状态进行了表征;通过对复合材料进行电导、击穿和介电频谱测试来研究纳米填料的维度对电学性能的影响规律。实验结果表明,在MMT-SiC/EP复合体系中添加一维四针状氧化锌(T-ZnOw)比零维颗粒状ZnO,可以更加有效增加体系中界面重合率,更加容易在复合材料内部构成良好的载流通路,能够在有效降低复合材料的阈值场强,提高复合材料的电导率和非线性系数,使得复合材料具备优越非线性电导特性的同时,不仅可以保证击穿场强不会太低,还可以降低复合材料的相对介电常数和介质损耗角正切值。

     

  • 图  1  试样制备的工艺过程

    Figure  1.  Process of specimen preparation

    MMT—Montmorillonoid; T-ZnOw—One-dimensional four-needle zinc oxide

    图  2  直流体积电导电流测试系统

    Figure  2.  DC volumetric conductivity current test system

    图  3  交流击穿测试系统

    Figure  3.  AC breakdown test system

    图  4  蒙脱土(MMT)有机化处理前后的XRD图谱

    Figure  4.  XRD patterns of montmorillonite (MMT) before and after organic treatment

    图  5  MMT-SiC/EP复合材料断面的SEM图像

    Figure  5.  SEM cross-sectional images of MMT-SiC/EP composite

    图  6  ZnO-MMT-SiC/EP试样的断面SEM图像 (a) 和EDS元素能谱图 ((b), (c))

    Figure  6.  SEM cross-sectional images (a) and EDS elemental mapping ((b), (c)) of ZnO-MMT-SiC/EP specimens

    图  7  T-ZnOw-MMT-SiC/EP试样的断面SEM图像 (a) 和EDS元素能谱图 ((b), (c))

    Figure  7.  SEM cross-sectional images (a) and EDS elemental mapping ((b),(c)) of T-ZnOw-MMT-SiC/EP specimens

    图  8  微纳米复合材料载流子的传输通道示意图

    Figure  8.  Schematic diagram of the carrier transport path of micro-nano composites

    E—Voltage

    图  9  不同类型微纳米复合材料的非线性电导特性

    Figure  9.  Nonlinear conductivity properties of different types of micro-nano composites

    图  10  不同微纳米复合材料击穿场强的Weibull曲线

    Figure  10.  Weibull curves of the breakdown field strength of different micro-nano composites

    β—Shape parameter; E0—Breakdown field strength

    图  11  复合材料的相对介电常数 (a) 与介电损耗(tanδ) (b) 随频率的变化

    Figure  11.  Distribution of relative permittivity (a) and dielectric loss (tanδ) (b) of composite materials with frequency

    表  1  复合材料试样的编号和配比

    Table  1.   Numbering and proportioning of composite specimens

    SpecimenProportion/g
    SiC/EP100/100
    MMT-SiC/EP1/100/100
    ZnO-MMT-SiC/EP9/1/100/100
    T-ZnOw-MMT-SiC/EP9/1/100/100
    Note: EP—Epoxy.
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出版历程
  • 收稿日期:  2022-10-10
  • 修回日期:  2022-10-31
  • 录用日期:  2022-11-08
  • 网络出版日期:  2022-11-18
  • 刊出日期:  2023-09-15

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