Dilatancy

Japanese: dilatancy
Dilatancy

…Paints are generally made by dispersing pigments in a solution of polymeric substances. When you apply it with a brush (applying external force), it flows, but once applied, it hardens and does not run off, which is convenient. Dilatancy is the opposite phenomenon to thixotropy. When you step on damp sand at the beach, the sand loses moisture and becomes hard, but when you remove your foot, the sand returns to its original soft, damp state. …

*Some terminology explanations that mention "dilatancy" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…塗料は一般に高分子物質の溶液に顔料を分散させたものであるが,これをブラシで塗る(外力を加える)ときは流動するが,塗り終わると固化して流れ落ちないのでつごうがよい。 ダイラタンシーdilatancyはチキソトロピーと逆の現象である。海辺の湿った砂地を足で踏みつけると,砂地は水分が少なくなってかたくなり,足を離すと砂地はもとのやわらかく湿った状態に戻る。…

※「dilatancy」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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