Effect of plasma surface gradient etching on surface flashover performance of epoxy resin

Yan Jiyuan; Liang Guishu; Kang Yuchan; Peng Chengkai; Wan Zijian; Lü Tianshu; Xie Qing

doi:10.11884/HPLPB202133.210100

Volume 33 Issue 6

Jun. 2021

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Yan Jiyuan, Liang Guishu, Kang Yuchan, et al. Effect of plasma surface gradient etching on surface flashover performance of epoxy resin[J]. High Power Laser and Particle Beams, 2021, 33: 065016. doi: 10.11884/HPLPB202133.210100

Citation:

Yan Jiyuan, Liang Guishu, Kang Yuchan, et al. Effect of plasma surface gradient etching on surface flashover performance of epoxy resin[J]. High Power Laser and Particle Beams, 2021, 33: 065016. doi: 10.11884/HPLPB202133.210100

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Effect of plasma surface gradient etching on surface flashover performance of epoxy resin

doi: 10.11884/HPLPB202133.210100

1.
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
2.
School of Electrical and Electronic Engineering, North China Electric Power University, Baoding, 071003, China

Received Date: 2021-03-22
Rev Recd Date: 2021-04-21

Available Online: 2021-05-08

Publish Date: 2021-06-15

Abstract

Abstract

In this paper, plasma gradient etching of alumina/epoxy resin surface is realized by combining plasma surface etching method and gradient modification method. Scanning electron microscope (SEM), surface profiler, X-ray photoelectron spectroscopy (XPS), high resistance meter, flashover voltage and surface potential measurement system were used to compare the surface morphology, chemical elements and electrical parameters of untreated, uniform plasma etching and gradient plasma etching samples, and the mechanism of improving the surface flashover performance by gradient plasma etching was studied. The results show that plasma surface etching can improve the surface roughness of epoxy resin, increase the surface conductivity, shallow the trap energy level and increase the surface flashover voltage. The enhancement of flashover voltage by plasma gradient etching is better than that by plasma uniform etching, and the maximum increase is 26.5% compared with the untreated sample. The analysis shows that the electric field distribution of the needle-needle electrodes can be separated into the high field intensity region (near the triple junction) and the low field intensity region (between the electrodes). Speeding up the surface charge dissipation rate in the high field intensity region and properly controlling the surface charge migration rate in the low field intensity region can improve the overall surface flashover performance of the sample to the greatest extent.
- plasma,
- surface etching,
- epoxy resin,
- gradient modification,
- surface flashover,
- surface charge

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References(41)

References

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