<br>受鸢尾科植物叶子启发，具有优异防冰减阻性能的超疏水表面,Langmuir

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受鸢尾科植物叶子启发，具有优异防冰减阻性能的超疏水表面
Langmuir ( IF 3.7 ) Pub Date : 2024-03-19 , DOI: 10.1021/acs.langmuir.4c00333
Wen Zhou ₁ , Xiaoming Feng ₁ , Zhizhong Wang ₁ , Dongpo Zhu ₁ , Jiahui Chu ₁ , Xiaohui Zhu ₁ , Yuxue Hu ₁ , Guizhong Tian ₁

Affiliation

在过去的十年中，各种微结构表面的防冰和减阻特性经过了广泛的研究。尽管如此，恶劣的环境对超疏水表面（SHS）的复合特性提出了严格的要求。在这项研究中，从耐寒植物鸢尾科植物中汲取灵感，通过纳秒激光加工技术在金属基材上制造了新的复合结构。制备的样品表面主要由周期性微菱形阵列和不规则纳米片组成。为了综合考察其特殊结构对其表面性能的影响，采用三个不同尺寸菱形结构的表面进行对比分析，结果表明SH-S2样品是最优的。这可以在 -10 °C 下将冷冻时间显着延迟 1404 秒，同时揭示样品表面防冰策略。此外，流变实验确定SH-S2样品的滑移长度超过300μm，表面减阻率达到近40%，这与延迟结冰实验的结果非常吻合。最后，通过划痕损伤、砂纸磨损、可修复性试验以及结冰和融化循环测试来研究SH-S2表面的机械耐久性。这项研究提出了一种在极地船舶表面应用 SHS 的新方法和方法。

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Superhydrophobic Surfaces with Excellent Ice Prevention and Drag Reduction Properties Inspired by Iridaceae Leaf

The anti-icing and drag-reduction properties of diverse microstructured surfaces have undergone extensive study over the past decade. Nonetheless, tough environments enforce stringent demands on the composite characteristics of superhydrophobic surfaces (SHS). In this study, fresh composite structures were fabricated on a metal substrate by nanosecond laser machining technology, drawing inspiration from the hardy plant Iridaceae. The prepared sample surface mainly consists of a periodic microrhombus array and irregular nanosheets. To comprehensively investigate the effect of its special structure on surface properties, three surfaces with different sizes of rhombic structures were used for comparative analysis, and the results show that the SH-S2 sample is optimal. This can significantly delay the freezing time by an impressive 1404 s at −10 °C while revealing the sample surface anti-icing strategy. In addition, the rheological experiments determined over 300 μm of slip length for the SH-S2 sample, and the drag reduction rate of the surface reaches nearly 40%, which is well aligned with the results of the delayed icing experiments. Finally, the mechanical durability of the SH-S2 surface was investigated through scratch damage, sandpaper abrasion, reparability trials, and icing and melting cycle tests. This research presents a new approach and methodology for the application of SHS on polar ship surfaces.

更新日期：2024-03-19

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