主催: 一般社団法人 日本機械学会
会議名: 2021年度 年次大会
開催日: 2021/09/05 - 2021/09/08
Ice formation and accretion present serious economic and safety issues for many essential infrastructures such as aircraft, power lines, and marine vessels, as in many commercial and residential refrigerators and freezers. Therefore the surface to reduce adhesion between ice and the surface is required from the industrial field. The effect of contact angle on water droplet freezing process on silicone film with spherical curvature structure was experimentally investigated. A series of hydrophobic surfaces with different contact angles were prepared by spincoating.The experimental results showed that the contact angle has a strong influence on the water droplet freezing time. The larger the contact angle is, the longer the freezing time of water droplet. The measured frost crystal growth velocity on the hydrophobic surfaces is larger than that on the plain glass surface. The larger the contact angle is, the lower the adhesion force between the frozen water droplet and the cooling surface.