High field light emission in LDPE/MgO nanocomposite

Toshikatsu Tanaka, Kanan Yokoyama, Yoshimichi Ohki, Yoshinao Murata, Yoitsu Sekiguchi, Manabu Goshowaki

研究成果: Paper査読

11 被引用数 (Scopus)


This paper deals with initiation of light emission and electrical trees in LDPE/MgO nanocomposite. Specimens were prepared in such a way that a tungsten needle of 50 μm φ and 1μmR was inserted into dielectrics with a spacing of 0.4 mm between high voltage and ground. Light emission was observed by an ICCD camera, and tree shapes were examined by an optical microscope. As a result, it was found that light emission originates from electrical trees rather than electroluminescence in our experiments and that initiation of electrical trees and light emission are affected by the addition of nano MgO fillers. That is, it was clarified that applied voltage or electric stress for tree initiation tends to increase, as filler content increases in the range of 0 to 1 phr. In addition, tree length is shortened due to inclusion of nano-fillers.

出版ステータスPublished - 2008 12 31
イベント2008 International Symposium on Electrical Insulating Materials, ISEIM 2008 - Yokkaichi, Japan
継続期間: 2008 9 72008 9 11


Conference2008 International Symposium on Electrical Insulating Materials, ISEIM 2008

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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