超疏水涂层覆冰过冷水滴捕获率研究  

Study on Capture Rates of Super-cooled Water Droplets on Super-hydrophobic Coating Under Icing Conditions

作　　者：赵玉顺[1,2] 李剑[2] 胡建林[2] 舒立春[2] 

机构地区：[1]合肥工业大学电气与自动化工程学院,合肥230009 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《高电压技术》2016年第3期914-922,共9页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2009CB724502)~~

摘　　要：为了了解超疏水涂层的覆冰特性,提出了一种测量涂层覆冰过冷水滴捕获率的新方法,考察了覆冰温度与涂层倾斜角度对超疏水涂层过冷水滴捕获率的影响,研究了涂层过冷水滴捕获率随覆冰时间的变化过程。并从超疏水涂层的微观结构出发,结合过冷却水滴在超疏水涂层上的潜热释放和运动过程分析,对超疏水涂层的过冷水滴捕获率变化原因进行了阐释。结果表明:超疏水涂层具有很小的过冷水滴捕获率;超疏水涂层过冷水滴捕获率对温度变化的敏感度较小,对倾斜角度变化的敏感度较大;随着覆冰时间的延长,超疏水涂层的过冷水滴捕获率以"缓慢增大—快速增大—趋于稳定"的趋势发生变化。A new method for measuring the super-cooled water droplets capture rate was proposed to study the icing properties of the super-hydrophobic coatings. Effects of icing temperature and inclined angle on super-cooled water droplets capture rate were investigated, and temporal evolution of the capture rates was studied. Moreover, evolution mechanisms of the super-cooled water droplets capture rate on the coatings were discussed by considering the surface micro-structures, the latent heat releasing process, and sliding process of super-cooled water droplets on the super-hydrophobic coatings. The results show that capture rates of super-cooled water droplets on the super-hydrophobic coatings are very small, the capture rates of super-cooled water droplets are insensitive to the changing of icing temperature, and are sensitive to the changing of inclined angle.The evolution of the capture rate of super-cooled water droplets possesses three distinct periods： the slowly increasing period, the rapidly increasing period, and the slowly tending to constantly period.

关 键 词：超疏水涂层 覆冰 温度 倾斜角度 覆冰时间 过冷水滴捕获率 

分 类 号：TM752[电气工程—电力系统及自动化]