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Nonlinear Surface Conductivity Characteristics of Epoxy Resin-Based Micro-Nano Structured Composites

Author

Listed:
  • Ning Guo

    (Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China)

  • Jiaming Sun

    (Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China)

  • Yunlei Li

    (Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China)

  • Xiaoyu Lv

    (Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China)

  • Junguo Gao

    (Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China)

  • Mingpeng He

    (DongFang Electric Machinery Co., Ltd., Deyang 618000, China)

  • Yue Zhang

    (DongFang Electric Machinery Co., Ltd., Deyang 618000, China)

Abstract

Nonlinear composite materials serve to homogenize electric fields and can effectively improve the local concentration of the electric field in power systems. In order to study the nonlinear surface conductivity properties of micro-nano epoxy composites, two types of epoxy micro-nano composite specimens were prepared in the laboratory using the co-blending method. The surface conductivity of the composites was tested under different conditions using a high-voltage DC surface conductivity test system. The results show that the surface conductivity of micro-nano structured composites increases and then decreases with the rise of nanofiller doping concentration. The nonlinear coefficient was 1.781 at 4 wt% of doped nanostructured SiC, which was the most significant nonlinear coefficient compared to other doping contents. For the same doping concentration, the micro-nano structured composites doped with nanostructured SiC have more significant surface conductivity at the same test temperature with a nonlinear coefficient of 1.635. As the temperature increases, the surface conductivity of the micro-nano structured composite increases significantly, and the threshold field strength moves towards the high electric field. Along with the increase in temperature, the nonlinear coefficients of micro-nano composites after doping with nanostructured SiC showed a gradually decreasing trend. The temperature has little effect on the nonlinear coefficients of the micro-nano structured composites after doping with O-MMT.

Suggested Citation

  • Ning Guo & Jiaming Sun & Yunlei Li & Xiaoyu Lv & Junguo Gao & Mingpeng He & Yue Zhang, 2022. "Nonlinear Surface Conductivity Characteristics of Epoxy Resin-Based Micro-Nano Structured Composites," Energies, MDPI, vol. 15(15), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:15:p:5374-:d:871002
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    References listed on IDEAS

    as
    1. Haitao Hu & Xiaohong Zhang & Yanli Liu & Lijun Guo & Junguo Gao, 2018. "Optimization of the Electric Field Distribution at the End of the Stator in a Large Generator," Energies, MDPI, vol. 11(10), pages 1-14, September.
    2. SK Manirul Haque & Jorge Alfredo Ardila-Rey & Yunusa Umar & Abdullahi Abubakar Mas’ud & Firdaus Muhammad-Sukki & Binta Hadi Jume & Habibur Rahman & Nurul Aini Bani, 2021. "Application and Suitability of Polymeric Materials as Insulators in Electrical Equipment," Energies, MDPI, vol. 14(10), pages 1-29, May.
    3. Youngtaek Jeon & Shin-Ki Hong & Myungchin Kim, 2019. "Effect of Filler Concentration on Tracking Resistance of ATH-Filled Silicone Rubber Nanocomposites," Energies, MDPI, vol. 12(12), pages 1-14, June.
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