Atmospheric pressure plasma jet deposition of TiO<sub>2</sub> layer on alumina/epoxy to improve electrical properties

Yanze SONG; Jinjian ZHAO; Bowen ZHENG; Zihao XIE; Guishu LIANG; Qing XIE

doi:10.1088/2058-6272/ad8f0b

Plasma Science and Technology > 2025 > 27(1): 015501. > DOI: 10.1088/2058-6272/ad8f0b CSTR: 32219.14.2058-6272/ad8f0b

Yanze SONG, Jinjian ZHAO, Bowen ZHENG, Zihao XIE, Guishu LIANG, Qing XIE. Atmospheric pressure plasma jet deposition of TiO₂ layer on alumina/epoxy to improve electrical properties[J]. Plasma Science and Technology, 2025, 27(1): 015501. DOI: 10.1088/2058-6272/ad8f0b

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Atmospheric pressure plasma jet deposition of TiO₂ layer on alumina/epoxy to improve electrical properties

Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071003, People’s Republic of China

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Author Bio:
Qing XIE: 13582251628@126.com
Corresponding author:
Qing XIE, 13582251628@126.com
Received Date: March 25, 2024
Revised Date: October 31, 2024
Accepted Date: November 03, 2024
Available Online: November 05, 2024
Published Date: December 30, 2024

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Abstract

Abstract

In gas-insulated lines, basin-insulators can accumulate charge under non-uniform electric fields, distorting the field distribution and potentially causing surface flashover, which threatens the stability of power systems. In this study, Atmospheric Pressure Plasma Jet (APPJ) technology was used to deposit TiO₂ on the surface of alumina/epoxy (Al₂O₃/EP) composites. The impact of deposition of TiO₂ layer on the surface morphology and chemical composition of Al₂O₃/EP was studied using testing methods such as Scanning Electron Microscope, X-ray photoelectron spectroscopy, Fourier Transform Infrared Spectrometer, and Energy Dispersive Spectrometer. It was found that APPJ creates a dense, rough Ti-O layer on the Al₂O₃/EP surface, which bonds tightly with the substrate. The efficacy of APPJ was found to depend on processing time, with optimal results observed at 3 min, DC and AC flashover voltages increased by 29.6% and 15.7%, respectively. TiO₂ layer enhances the conductivity of the resin and shallows trap levels. Through the synergistic effects of various factors, surface charges are efficiently dissipated and evenly distributed. This study not only reveals the physicochemical process of TiO₂ deposition via APPJ but also integrates surface characteristics with electrical performance. The findings offer a new strategy to enhance surface flashover voltage and ensure equipment safety.
- surface flashover,
- plasma,
- polymer composites,
- epoxy resin,
- charge accumulation

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Acknowledgments

The authors acknowledge National Natural Science Foundation of China (Nos. 52007065 and 52277147), the Fundamental Research Funds for the Central Universities (No. 2022MS071).

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