涂覆超疏水涂层绝缘子表面覆冰过程

发布时间：2018-06-28 15:16

本文选题：超疏水涂层 + 过冷却水滴　；参考：《高电压技术》2014年05期

【摘要】：超疏水性涂层表面水滴运动特性与冻结过程是影响其防覆冰性能的重要因素,同时也是研究应用超疏水性涂层进行绝缘子防覆冰的重要基础。在低温低气压试验室中进行了超疏水表面水滴运动与冻结过程以及涂覆疏水性涂层绝缘子覆冰特性试验,分析了超疏水性涂层表面水滴开始碰撞表面到表面完全被冰层覆盖的动态过程,研究了涂层表面水滴的运动特性和冻结过程及影响因素。试验结果表明:超疏水性涂层表面过冷却水滴的运动特性受接触角、接触角滞后、表面缺陷等因素的影响;水滴的运动特性越好,形成冰层进入覆冰稳定增长的所需时间越长;超疏水涂层能在一定程度上延缓绝缘子的覆冰,涂层的接触角越大、接触角滞后越小,水滴滚动特性越好,延缓覆冰时间相对越长。
[Abstract]:The motion characteristics and freezing process of water droplets on the surface of superhydrophobic coatings are important factors affecting their anti-icing performance, and are also the important basis for the study of the application of super-hydrophobic coatings to insulator anti-icing. The motion and freezing process of water droplets on superhydrophobic surface and the ice characteristics of insulators coated with hydrophobic coating were tested in a low temperature and low pressure chamber. The dynamic process of water droplets on the surface of superhydrophobic coatings from impact to completely covered by ice layer was analyzed. The motion characteristics, freezing process and influencing factors of water droplets on the surface of superhydrophobic coatings were studied. The experimental results show that the motion characteristics of superhydrophobic coating surface supercooling water droplets are affected by contact angle, contact angle lag, surface defects and so on, and the better the motion characteristics of water droplets, the longer it takes to form ice layer into the stable growth of ice coating. The superhydrophobic coating can delay the icing of insulator to some extent. The larger the contact angle, the smaller the contact angle, the better the rolling property of water droplet, and the longer the ice coating time is.
【作者单位】：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;
【基金】：国家自然科学基金(51107152;51021005) 中央高校基本科研业务费(CDJZR12110014)~~
【分类号】：TM216

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