实验流体力学2025，Vol.39Issue(4)：75-80,6.DOI:10.11729/syltlx20220085
低温和湿度对超疏水表面水滴接触角的影响
Effects of low temperature and humidity on contact angles of water droplets on superhydrophobic surfaces
摘要
Abstract
The Cassie-Wenzel(C-W)wetting transition on superhydrophobic surfaces has been extensively explored.However,the influence of environmental humidity on wettability transformation of irregular surfaces formed by film mulch is not sufficiently explored.The static contact angle change of water droplets induced by different temperatures and ambient humidity was studied by ground cold environment test.The results show that low temperature induces the drop contact angle to decrease,and the surface condensation occurs.After the temperature is stabilized,humidity becomes the main factor affecting the change of the contact angle.The freezing delay time and the contact angle before freezing are affected by the temperature.The effects of temperature and humidity on the contact angle can be quantitatively evaluated by the low temperature and freezing test of water droplets.The contact angle decreases by 5.0°±1.7° for every 5℃decrease in temperature.When the temperature is stabilized,the contact angle of water droplets decreases by 2.4°±0.7° per minute at a relative humidity of 88%and by 0.9°±0.2°per minute at a relative humidity of 45%.关键词
超疏水/低温/湿度/接触角/润湿状态转变Key words
superhydrophobic/low temperature/humidity/contact angle/wetting state transition分类
通用工业技术引用本文复制引用
邱岳,杨一帆,于大川,朱春玲..低温和湿度对超疏水表面水滴接触角的影响[J].实验流体力学,2025,39(4):75-80,6.基金项目
国家自然科学基金项目(11832012) （11832012）
