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Characteristics of Gel Time and Dielectric Strength of Epoxy Composite According to the Mixing Ratio of Micro-Fillers

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  • Dong-Hun Oh

    (Department of Electronic Engineering, Hanyang University, Hanyangdaehak-ro 55, Ansan 15588, Korea)

  • Ho-Seung Kim

    (Department of Electronic Engineering, Hanyang University, Hanyangdaehak-ro 55, Ansan 15588, Korea)

  • Jae-Hun Shim

    (Advanced Materials System Team 2, KUKDO Chemial, Gasan digital 2-ro, 61, Seoul 08588, Korea)

  • Young-Ho Jeon

    (Advanced Materials System Team 2, KUKDO Chemial, Gasan digital 2-ro, 61, Seoul 08588, Korea)

  • Da-Won Kang

    (Advanced Materials System Team 2, KUKDO Chemial, Gasan digital 2-ro, 61, Seoul 08588, Korea)

  • Bang-Wook Lee

    (Department of Electronic Engineering, Hanyang University, Hanyangdaehak-ro 55, Ansan 15588, Korea)

Abstract

The dielectric strength and gel time of epoxy composites vary with the mixing ratio of epoxy resin, hardener, additives, filler, etc., and especially the gel time affects the productivity and economics of ultra-high-voltage (UHV) equipment. However, previous studies focused only on the dielectric strength of epoxy composites for the reliability of UHV equipment. Therefore, a study considering both the dielectric strength and gel time of the epoxy composite is required. In this paper, the characteristics of the gel time and dielectric strength of the epoxy micro-composites according to the mixing ratio of silica (SiO 2 ) and alumina (Al 2 O 3 ) micro-fillers without changing the mixing ratio of epoxy resin and hardener are analyzed. Experimental results show that the gel time decreased and the dielectric strength increased as the mixing ratio of the SiO 2 micro-filler increased. Therefore, it is concluded that the gel time can be controlled by changing the mixing ratio of micro-fillers without changing the mixing ratio of the epoxy resin and hardener. In addition, experimental data can be used as basic data for economical production considering both the reliability and productivity of UHV power equipment.

Suggested Citation

  • Dong-Hun Oh & Ho-Seung Kim & Jae-Hun Shim & Young-Ho Jeon & Da-Won Kang & Bang-Wook Lee, 2020. "Characteristics of Gel Time and Dielectric Strength of Epoxy Composite According to the Mixing Ratio of Micro-Fillers," Energies, MDPI, vol. 13(19), pages 1-13, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:19:p:5165-:d:423599
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    Cited by:

    1. Ning Guo & Ruixiao Meng & Junguo Gao & Mingpeng He & Yue Zhang & Lizhi He & Haitao Hu, 2022. "Properties and Simulating Research of Epoxy Resin/Micron-SiC/Nano-SiO 2 Composite," Energies, MDPI, vol. 15(13), pages 1-14, July.

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