Superhydrophobic Surfaces: Are They Really Ice-Repellent?
Superhydrophobic Surfaces: Are They Really Ice-Repellent?
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DOI：
10.1021/la104277q
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发表时间：
2011-01-04
期刊：
影响因子：
3.9
通讯作者：
Du, X. W.
中科院分区：
文献类型：
--
作者：
Kulinich, S. A.;Farhadi, S.;Du, X. W.
这项工作研究了不同条件下各种超疏水表面的防冰性能。雨凇冰（类似于“冻雨”期间沉积的冰）的粘附强度被用作衡量脱冰性能的指标。结果表明，在结冰/除冰循环过程中，材料的拒冰性能会下降，因为表面的粗糙结构似乎逐渐被破坏。研究还表明，在潮湿的大气中，超疏水表面的防冰效率显著降低，因为表面粗糙结构顶部及其之间都会发生水汽凝结，导致冰的粘附强度显著增大。因此，这项工作表明超疏水表面并不总是拒冰的，它们作为防冰材料的应用可能因此受到限制。
This work investigates the anti-ice performance of various superhydrophobic surfaces under different conditions. The adhesion strength of glaze ice (similar to that deposited during "freezing rain") is used as a measure of ice-releasing properties. The results show that the ice-repellent properties of the materials deteriorate during icing/deicing cycles, as surface asperities appear to be gradually damaged. It is also shown that the anti-icing efficiency of superhydrophobic surfaces is significantly lower in a humid atmosphere, as water condensation both on top of and between surface asperities takes place, leading to significantly larger values of ice adhesion strength. This work thus shows that superhydrophobic surfaces are not always ice-repellent and their use as anti-ice materials may therefore be limited.