Verifying the deicing capacity of superhydrophobic anti-icing surfaces based on wind and thermal fields
Verifying the deicing capacity of superhydrophobic anti-icing surfaces based on wind and thermal fields
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DOI：
10.1016/j.surfcoat.2016.10.098
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发表时间：
2017-01
影响因子：
5.4
通讯作者：
Chunling Zhu;Senyun Liu;Yizhou Shen;J. Tao;Guanyu Wang;L. Pan
中科院分区：
文献类型：
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作者：
Chunling Zhu;Senyun Liu;Yizhou Shen;J. Tao;Guanyu Wang;L. Pan
超疏水表面具有良好的防冰性能和较低的冰粘附强度，因此其防冰潜力受到了广泛的关注。本文旨在验证超疏水表面在风场和热场条件下的除冰能力，以期促进其工程应用。以亲水性和超疏水性等不同润湿表面为研究对象，基于风场和热场分析了不同润湿表面的除冰特性。结果表明，在风场条件下，微纳分级结构超疏水表面具有显著的除冰性能（无论冻结温度如何），因为表面上的冰被吹走所需的时间最短.然而，在超疏水表面上的特定的微-纳米级分级结构也引起了不良的融冰性质，由于被困的气穴引起的较低的传热效率。此外，超疏水表面在30次冰/除冰循环的条件下显示出稳健的耐久性。因此，在防冰超疏水表面的实际应用中，风场除冰是一种理想的辅助除冰方法。
Based on the high icing-delay performance and low ice adhesion strength, the anti-icing potential of superhydrophobic surfaces has been well investigated over the past years. The aim of this work was to verify the deicing capacity of superhydrophobic surfaces under the conditions of wind and thermal fields, expecting to promote its engineering applications. We took various wetting surfaces ranging from hydrophilic to superhydrophobic as research objects, and discussed the deicing properties of these sample surfaces based on the wind and thermal fields. The results indicated that under the condition of wind field, the micro-nanoscale hierarchical structured superhydrophobic surface exhibited a remarkable deicing property (no matter what the freezing temperature was), due to the time required for blowing away ice on the surface being least. However, the specific micro-nanoscale hierarchical structures on the superhydrophobic surface also induced a poorly melting ice property owing to the lower heat transfer efficiency caused by trapped air pockets. Furthermore, the superhydrophobic surface displayed a robust durability under the condition of 30 icing/deicing cycles. Therefore, we believe that the wind field deicing is an ideal choice as the assistant deicing approach considered in the practical applications of the anti-icing superhydrophobic surfaces.