Understanding the Solid–Ice Interface Mechanism on the Hydrophobic Nano-Pillar Structure Epoxy Surface for Reducing Ice Adhesion
Understanding the Solid–Ice Interface Mechanism on the Hydrophobic Nano-Pillar Structure Epoxy Surface for Reducing Ice Adhesion
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DOI：
10.3390/coatings10111043
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发表时间：
2020-10
期刊：
影响因子：
3.4
通讯作者：
Jia Zhenfeng;Yizhou Shen;J. Tao;Yu Zhang;Haifeng Chen;Yang Lu;Zhengwei Wu
中科院分区：
文献类型：
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作者：
Jia Zhenfeng;Yizhou Shen;J. Tao;Yu Zhang;Haifeng Chen;Yang Lu;Zhengwei Wu
风力涡轮机叶片结冰会降低发电效率，增加风力涡轮机的维护成本，甚至造成设备损坏和人员伤亡。为了实现被动防冰，在风力涡轮机叶片制造中常用的双酚A环氧树脂基体上构建了一系列直径为100 ~ 400 nm、高度为400 ~ 1500 nm的纳米柱阵列结构。所制备的功能表面具有优异的拒水性，接触角高达154.3°。纳米柱阵列结构的斥水性可以诱导低至7.0 kPa的超低冰粘附，在广泛认可的疏冰材料范围内找到它们的位置。从界面非润湿状态和纳米柱阵列结构表面的应力集中行为两个方面揭示了固体-冰界面的机理。对这两个因素的详细讨论将有助于憎冰材料，特别是环氧基复合材料的表面结构设计和功能。
Ice accumulation on wind turbine blades reduces power generation efficiency and increases wind turbines’ maintenance cost, even causing equipment damage and casualties. In this work, in order to achieve passive anti-icing, a series of nano-pillar array structures with different diameters of from 100 to 400 nm and heights of from 400 to 1500 nm were constructed on the substrate bisphenol-A epoxy resin, which is generally used in the manufacturing of wind turbine blades. The as-constructed functional surface showed excellent water repellence, with a contact angle of up to 154.3°. The water repellence on the nano-pillar array structures could induce ultra-low ice adhesion as low as 7.0 kPa, finding their place in the widely recognized scope of icephobic materials. The underlying solid–ice interface mechanism was well revealed in regard to two aspects: the interface non-wetting regime and the stress concentration behavior on the nano-pillar array structured surface. A detailed discussion on both the factors presented here will help surface structure design and function of icephobic materials, especially for epoxy-based composite materials.