Effects of Al2O3 Particles on Surface Charge of Epoxy Nanocomposites

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2013/04/01

タイトル(英語): Effects of Al2O3 Particles on Surface Charge of Epoxy Nanocomposites

著者名: Boxue Du (Department of Electrical Engineering, School of Electrical Engineering and Automation, Tianjin University), Li Wang (Department of Electrical Engineering, School of Electrical Engineering and Automation, Tianjin University), Jiwei Zhang (Departm

著者名(英語): Boxue Du (Department of Electrical Engineering, School of Electrical Engineering and Automation, Tianjin University), Li Wang (Department of Electrical Engineering, School of Electrical Engineering and Automation, Tianjin University), Jiwei Zhang (Department of Electrical Engineering, School of Electrical Engineering and Automation, Tianjin University), Yu Gao (Department of Electrical Engineering, School of Electrical Engineering and Automation, Tianjin University), Yunpeng Li (Department of Electrical Engineering, School of Electrical Engineering and Automation, Tianjin University)

キーワード: epoxy，Al2O3，nanocomposites，surface charge，charge accumulation，charge decay

要約(英語): Epoxy that used as insulating material in electronic and electrical devices plays an important role in system reliability. Addition of nanoparticles can improve the insulating properties of epoxy compared with undoped material. However, due to the change of the material structure, trap characteristics and charge behaviors are altered as a consequence. This possibly leads to the distortion of electric field that initiates discharge which results in the degradation of the insulation. From the viewpoint of safety, it is necessary to investigate the charge behavior of epoxy nanocomposites. This paper presents study aimed at clarifying the effect of nano-filler concentration on the surface charge accumulation and the decay behaviors of epoxy/Al2O3 nanocomposites. Samples were prepared by dispersing nano-scale Al2O3 into epoxy. Corona charging tests were performed at room temperature with a relative humidity of less than 40%. The charge distribution was measured by means of an electrostatic voltmeter. Obtained results show the dependence of the charge density as well as the charge decay rate upon the concentration of Al2O3, varying as a function of the charge polarity, charging time and charging voltage. It is suggested that the charge dynamics is dependent upon the characteristics of localized surface states that are altered by the nanoparticles.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.133 No.4 （2013） 特集：平成24 年基礎・材料・共通部門大会

本誌掲載ページ: 224-230 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/133/4/133_224/_article/-char/ja/