This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Open AccessArticle
Research and Analysis on Enhancement of Surface Flashover Performance of Epoxy Resin Based on Dielectric Barrier Discharge Plasma Fluorination Modification
by
Xizhe Chang
Xizhe Chang 1,
Yueyi Sui
Yueyi Sui 2,
Changyu Li
Changyu Li 3 and
Zhanyuan Yan
Zhanyuan Yan 1,4,*
1
Department of Mathematics and Physics, North China Electric Power University, Baoding 071000, China
2
State Grid Hebei Electric Power Co., Ltd. Ultra High Voltage Branch, Shijiazhuang 050070, China
3
College of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
4
Hebei Key Laboratory of Physics and Energy Technology, North China Electric Power University, Baoding 071000, China
*
Author to whom correspondence should be addressed.
Nanomaterials 2024, 14(17), 1382; https://doi.org/10.3390/nano14171382 (registering DOI)
Submission received: 24 July 2024
/
Revised: 22 August 2024
/
Accepted: 22 August 2024
/
Published: 24 August 2024
Abstract
To conquer the challenges of charge accumulation and surface flashover in epoxy resin under direct current (DC) electric fields, numerous efforts have been made to research dielectric barrier discharge (DBD) plasma treatments using CF4/Ar as the medium gas, which has proven effective in improving surface flashover voltage. However, despite being an efficient plasma etching medium, SF6/Ar has remained largely unexplored. In this work, we constructed a DBD plasma device with an SF6/Ar gas medium and explored the influence of processing times and gas flow rates on the morphology and surface flashover voltage of epoxy resin. The surface morphology observed by SEM indicates that the degree of plasma etching intensifies with processing time and gas flow rate, and the quantitative characterization of AFM indicates a maximum roughness of 144 nm after 3 min of treatment. Flashover test results show that at 2 min of processing time, the surface flashover voltage reached a maximum of 19.02 kV/mm, which is 25.49% higher than that of the untreated sample and previously reported works. In addition to the effect of surface roughness, charge trap distribution shows that fluorinated groups help to deepen the trap energy levels and density. The optimal modification was achieved at a gas flow rate of 3.5 slm coupled with 2 min of processing time. Furthermore, density functional theory (DFT) calculations reveal that fluorination introduces additional electron traps (0.29 eV) and hole traps (0.38 eV), enhancing the capture of charge carriers and suppressing surface flashover.
Share and Cite
MDPI and ACS Style
Chang, X.; Sui, Y.; Li, C.; Yan, Z.
Research and Analysis on Enhancement of Surface Flashover Performance of Epoxy Resin Based on Dielectric Barrier Discharge Plasma Fluorination Modification. Nanomaterials 2024, 14, 1382.
https://doi.org/10.3390/nano14171382
AMA Style
Chang X, Sui Y, Li C, Yan Z.
Research and Analysis on Enhancement of Surface Flashover Performance of Epoxy Resin Based on Dielectric Barrier Discharge Plasma Fluorination Modification. Nanomaterials. 2024; 14(17):1382.
https://doi.org/10.3390/nano14171382
Chicago/Turabian Style
Chang, Xizhe, Yueyi Sui, Changyu Li, and Zhanyuan Yan.
2024. "Research and Analysis on Enhancement of Surface Flashover Performance of Epoxy Resin Based on Dielectric Barrier Discharge Plasma Fluorination Modification" Nanomaterials 14, no. 17: 1382.
https://doi.org/10.3390/nano14171382
Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details
here.
Article Metrics
Article Access Statistics
For more information on the journal statistics, click
here.
Multiple requests from the same IP address are counted as one view.