Influence of Orientation of Flaky Boron Nitride on Electrical and Thermal Properties of Polymethylmethacrylate / Boron Nitride Electrical Insulating Composite Material Produced by Electrostatic Adsorption Method

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  • Murakami Yoshinobu
    Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology
  • Use Shohei
    Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology
  • Yamaguchi Shuhei
    Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology
  • Kawashima Tomohiro
    Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology
  • Muto Hiroyuki
    Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology
  • Hozumi Naohiro
    Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology
  • Nagao Masayuki
    Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology

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Other Title
  • 鱗片状窒化ホウ素の配向が静電吸着法で作製したポリメタクリル酸メチル/窒化ホウ素コンポジット電気絶縁材料の電気特性および熱的特性に与える影響
  • リンペンジョウ チッカ ホウソ ノ ハイコウ ガ セイデンキュウチャクホウ デ サクセイ シタ ポリメタクリルサン メチル/チッカ ホウソ コンポジット デンキ ゼツエン ザイリョウ ノ デンキ トクセイ オヨビ ネツテキ トクセイ ニ アタエル エイキョウ

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Abstract

<p>The thermal conductive plate in a device like power module for an automobile requires materials with higher thermal conductivity and acceptable electric breakdown strength. To develop a composite material with both a higher thermal conductivity and acceptable breakdown strength, polymethylmethacrylate (PMMA)/hexagonal boron nitride (h-BN) composite materials in which the flaky surface of h-BN oriented parallel to the electric field and the thermal conductivity measurement (= the sample thickness) direction were produced by an electrostatic adsorption method. The breakdown strength of the PMMA/h-BN composite material showed the increasing trend with the increase of the PMMA particle size. On the other hand, the thermal conductivity of the PMMA/h-BN composite material also showed the decreasing trend with the increase of the PMMA particle size. The h-BN content and/or the orientation rate of the flaky surface of h-BN to the electric field (= the thermal conductivity measurement) direction determine these properties.</p>

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