Atmospheric pressure plasma jet deposition of TiO_(2) layer on alumina/epoxy to improve electrical properties  

作　　者：Yanze SONG Jinjian ZHAO Bowen ZHENG Zihao XIE Guishu LIANG Qing XIE 宋岩泽;赵晋剑;郑博闻;谢子豪;梁贵书;谢庆(Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Baoding 071003,People’s Republic of China)

机构地区：[1]Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Baoding 071003,People’s Republic of China

出　　处：《Plasma Science and Technology》2025年第1期81-92,共12页等离子体科学和技术(英文版)

基　　金：National Natural Science Foundation of China(Nos.52007065 and 52277147);the Fundamental Research Funds for the Central Universities(No.2022MS071)。

摘　　要：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 TiO_(2) on the surface of alumina/epoxy(Al_(2)O_(3)/EP)composites.The impact of deposition of TiO_(2) layer on the surface morphology and chemical composition of Al_(2)O_(3)/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 Al_(2)O_(3)/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.TiO_(2)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 TiO_(2)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.

关 键 词：surface flashover PLASMA polymer composites epoxy resin charge accumulation 

分 类 号：TM216[一般工业技术—材料科学与工程] O539[电气工程—电工理论与新技术]