The Effect of Surface Treatment of Alumina Particles on Thermal Shock Resistance of Alumina/Rubber Hybrid Filled Epoxy Resin

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  • KUBOUCHI Masatoshi
    Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • SEMBOKUYA Hideki
    Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • FUKAYA Taro
    Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • TSUDA Ken
    Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • KUMAGAI Masashi
    Innovative Materials Development Center, Isohara Plant, Nikko Materials co., ltd.

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Other Title
  • アルミナ・ラバーハイブリッド充てんエポキシ樹脂の耐熱衝撃性に及ぼすアルミナ表面処理の影響
  • アルミナ ラバー ハイブリッド ジュウテン エポキシ ジュシ ノ タイネツ ショウゲキセイ ニ オヨボス アルミナ ヒョウメン ショリ ノ エイキョウ

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The fracture toughness and thermal shock resistance of an epoxy resin filled with alumina particles as a hard filler and CTBN rubber particles as a soft filler were investigated by focusing on the surface treatment of alumina particles. Although the fracture toughness was improved by filling alumina particles and CTBN rubber particles, the contribution of the alumina surface treatment to the fracture toughness was small. The thermal shock resistance was improved by filling CTBN rubber particles. However, the effect of alumina particles was not always positive. The thermal shock resistance is generally improved by the surface treatment of alumina particles : it was an example that the improvement was attained in the case of the brittle matrix epoxy resin regardless of the existence of CTBN. But on the other hand, the treatment was not effective in a tougher matrix resin. The fracture mechanisms were discussed, based on the fractographic observations.

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