Approach by Nano- and Micro-filler Mixture toward Epoxy-based Nanocomposites as Industrial Insulating Materials

• Imai Takahiro

  Power and Industrial Systems R&D Center, Toshiba Corporation

• Sawa Fumio

  Power and Industrial Systems R&D Center, Toshiba Corporation

• Ozaki Tamon

  Power and Industrial Systems R&D Center, Toshiba Corporation

• Shimizu Toshio

  Power and Industrial Systems R&D Center, Toshiba Corporation

• Kuge Shin-ichi

  Graduate School of Information, Production and Systems, Waseda University

• Kozako Masahiro

  Advanced Research Institute for Science and Engineering, Waseda University

• Tanaka Toshikatsu

  Graduate School of Information, Production and Systems, Waseda University

Abstract

The main contribution of this paper is to show the realizability of epoxy-based nanocomposites as industrial insulating materials. The nano- and micro-filler mixture was invented to boost the nanocomposite in industrial insulating materials. Nano- and micro-filler mixture composites were newly made by dispersing a few weight-percentages of nano-filler and approximately 60 weight-percentages of micro-silica fillers in epoxy resin. Two kinds of nano-filler were used, such as layered silicate and silica. Experimental results demonstrated that the approach by nano- and micro-filler mixture enables the nanocomposite to have not only superior insulation properties but also the same low thermal expansion in comparison with the conventional filled epoxy (approximately 60 weight-percentages of micro-silica loading). Moreover, the nano-silica and micro-filler mixture composite has the desired properties of resin viscosity and curing reaction whereas the layered silicate and micro-filler composite has higher resin viscosity and faster curing reaction than those of the conventional filled epoxy due to modifier ions of layered silicates. Consequently, the nano-silica and micro-filler mixture composite is presently the closest to the epoxy-based nanocomposite as an industiral insulation material.

Journal

• IEEJ Transactions on Fundamentals and Materials

  IEEJ Transactions on Fundamentals and Materials 126 (11), 1136-1143, 2006

  The Institute of Electrical Engineers of Japan

Keywords

• insulating material
• nanocomposite
• nano-filler
• micro-filler
• nano- and micro-filler mixture
• epoxy resin
• dielectric and electrical insulation properties
• thermal expansion coefficient
• resin viscosity
• curing process

Details

• CRID: 1390001204592854272
• NII Article ID: 10018317893
• NII Book ID: AN10136312
• DOI: 10.1541/ieejfms.126.1136
• ISSN: 13475533
• ISSN: 03854205
• NDL BIB ID: 8561880
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8561880
• Web Site: http://www.jstage.jst.go.jp/article/ieejfms/126/11/126_11_1136/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed