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Volume 13
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10.3390/en13195165
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Article

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

by
Dong-Hun Oh
1,
Ho-Seung Kim
1,
Jae-Hun Shim
2,
Young-Ho Jeon
2,
Da-Won Kang
2 and
Bang-Wook Lee
1,*
1
Department of Electronic Engineering, Hanyang University, Hanyangdaehak-ro 55, Ansan 15588, Korea
2
Advanced Materials System Team 2, KUKDO Chemial, Gasan digital 2-ro, 61, Seoul 08588, Korea
*
Author to whom correspondence should be addressed.
Energies 2020, 13(19), 5165; https://doi.org/10.3390/en13195165
Submission received: 27 August 2020 / Revised: 28 September 2020 / Accepted: 1 October 2020 / Published: 4 October 2020
(This article belongs to the Section F: Electrical Engineering)
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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 (SiO2) and alumina (Al2O3) 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 SiO2 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.
Keywords: epoxy composite; MICRO-filler; SiO2; Al2O3; mixing ratio; gel time; dielectric strength epoxy composite; MICRO-filler; SiO2; Al2O3; mixing ratio; gel time; dielectric strength

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MDPI and ACS Style

Oh, D.-H.; Kim, H.-S.; Shim, J.-H.; Jeon, Y.-H.; Kang, D.-W.; Lee, B.-W. Characteristics of Gel Time and Dielectric Strength of Epoxy Composite According to the Mixing Ratio of Micro-Fillers. Energies 2020, 13, 5165. https://doi.org/10.3390/en13195165

AMA Style

Oh D-H, Kim H-S, Shim J-H, Jeon Y-H, Kang D-W, Lee B-W. Characteristics of Gel Time and Dielectric Strength of Epoxy Composite According to the Mixing Ratio of Micro-Fillers. Energies. 2020; 13(19):5165. https://doi.org/10.3390/en13195165

Chicago/Turabian Style

Oh, Dong-Hun, Ho-Seung Kim, Jae-Hun Shim, Young-Ho Jeon, Da-Won Kang, and Bang-Wook Lee. 2020. "Characteristics of Gel Time and Dielectric Strength of Epoxy Composite According to the Mixing Ratio of Micro-Fillers" Energies 13, no. 19: 5165. https://doi.org/10.3390/en13195165

APA Style

Oh, D.-H., Kim, H.-S., Shim, J.-H., Jeon, Y.-H., Kang, D.-W., & Lee, B.-W. (2020). Characteristics of Gel Time and Dielectric Strength of Epoxy Composite According to the Mixing Ratio of Micro-Fillers. Energies, 13(19), 5165. https://doi.org/10.3390/en13195165

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