ソフトマターのトライボロジーにおける濡れ性の影響

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  • 西 駿明
    (株)アシックス スポーツ工学研究所

書誌事項

タイトル別名
  • Effects of Wettability on Tribology of Soft Matter
  • ソフトマター ノ トライボロジー ニ オケル ヌレ セイ ノ エイキョウ

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説明

<p>Soft matter such as polymers, colloids, and liquid crystals has been applied in various industrial fields where slip resistance,sealing performance or high slidability is needed. To improve slip resistance or sealing performance, rubber is applied to shoe soles, vehicle tires, and packing because the low elastic modulus of rubber induces a high real contact area. Furthermore, it is expected that polyvinyl alcohol hydrogels will be applied to artificial joints because of their low friction in water-lubricated conditions. The reason for soft mater having such low or high friction properties in wet conditions is based on wettability, which is quantified by spreading coefficient S. For the interface of rubber and a floor at S > 0, for example, the lubricant enters the interface thermodynamically, which leads to a low real contact area and low friction force. Conversely, at S < 0, the lubricant is dewetted from the interface, which causes increases in the real contact area and friction force. In addition to viscosity of lubricant,this unforced dewetting behavior can be changed by enforced wetting, e.g. contacting and sliding.</p>

収録刊行物

  • トライボロジスト

    トライボロジスト 64 (10), 588-593, 2019-10-15

    一般社団法人 日本トライボロジー学会

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