Preparation and Aging of Polyurethane Foams Filled with Silica Aerogels

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  • INOUE Nozomi
    Planning Department, R&D Headquarters, Achilles Corporation Department of Chemistry and Chemical Biology, Gunma University
  • YAMANOBE Takeshi
    Department of Chemistry and Chemical Biology, Gunma University

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Other Title
  • シリカエアロゲル/ポリウレタンフォームコンポジット断熱材の調製と耐久性評価
  • シリカエアロゲル/ポリウレタンフォームコンポジット ダンネツザイ ノ チョウセイ ト タイキュウセイ ヒョウカ

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Description

Polyurethane foam (PUF)/silica aerogel composites were successfully prepared as a heat insulating material by the supercritical carbon dioxide drying of PUFs filled with silica aerogels. PUF/silica aerogel composites were flexible and their thermal conductivities were as low as for the silica aerogel. The durability of PUF/silica aerogel composites was improved by using hydrophobic silica aerogel. PUF/hydrophobic silica aerogel composites were aged at 70°C and 95% RH. PUF/hydrophilic silica aerogel composite easily adsorbed water. Simultaneously, the volume shrank and the thermal conductivity of the composite drastically increased. On the other hand, PUF/hydrophobic silica aerogel composite was stable even at high temperature and in humidity conditions. After 10 weeks, the thermal conductivity of the composite hardly increased.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 70 (4), 123-128, 2013

    The Society of Polymer Science, Japan

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