エポキシ/窒化ホウ素コンポジットにおける高温絶縁破壊と電気伝導

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: 2012/02/01

タイトル(英語): High Temperature Characteristic in Electrical Breakdown and Electrical Conduction of Epoxy/Boron-nitride Composite

著者名: 竹中　悠（豊橋技術科学大学），栗本　宗明（豊橋技術科学大学），村上　義信（豊橋技術科学大学），長尾　雅行（豊橋技術科学大学）

著者名(英語): Yutaka Takenaka (Toyohashi University of Technology), Muneaki Kurimoto (Toyohashi University of Technology), Yoshinobu Murakami (Toyohashi University of Technology), Masayuki Nagao (Toyohashi University of Technology)

キーワード: エポキシ/窒化ホウ素コンポジット，高温絶縁破壊，伝導電流　　epoxy/boron-nitride composite，electrical breakdown in high temperature，conduction current

要約(英語): The power module for the electrical vehicle needs electrical insulation material with high thermal conductivity. Recently, the epoxy insulating material filled with boron-nitride particles (epoxy/boron-nitride composite) is focused as an effective solution. However, the insulation performance of epoxy/boron-nitride composite was not investigated enough especially at the high temperature in which the power module was used, i.e. more than 100℃. In this paper, we investigated high temperature characteristics in electrical breakdown and conduction current of epoxy/boron-nitride composite. Breakdown test under the application of DC lamp voltage and impulse voltage clarified that the epoxy/boron-nitride composite had the constant breakdown strength even in the high temperature. Comparison of the epoxy/boron-nitride composite with previous material, which was epoxy/alumina composite, indicated that the breakdown voltage of the epoxy/boron-nitride composite in the high temperature was found to be higher than that of epoxy/alumina composite under the same thermal-transfer quantity among them. Furthermore, conduction current measurement of epoxy/boron-nitride composite in the high temperature suggested the possibility of the ionic conduction mechanism.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.132 No.2 （2012） 特集：電気電子絶縁材料システムシンポジウム

本誌掲載ページ: 142-147 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/132/2/132_2_142/_article/-char/ja/