Zou Ruiqing, Tang Jianbin, Zhang Xin, Wang Jian
School of Materials Science and Engineering, Xihua University, Chengdu 610039, People's Republic of China.
ACS Appl Mater Interfaces. 2020 Dec 30;12(52):58412-58427. doi: 10.1021/acsami.0c18703. Epub 2020 Dec 21.
The development of a unique multilayer detached superhydrophobic structure inspired by biology with excellent superhydrophobic properties, extremely short rebound time, and low surface free energy has become a challenging issue. In this work, a superhydrophobic coating is prepared on the surface of Al 1060 via a fluorine-free, efficient, economical, and environment-friendly approach. First, a Ni nanocone layer is obtained from a recyclable electrodeposition solution. Then, stearic acid is prepared on the Ni nanocone layer by dip-coating technology, resulting in a special superhydrophobic surface called the "trampoline" structure, which is quite different from the Ni nanocone structure, as the substrate. The contact angle of water is 161.3°, and the sliding angle is 7°. In addition, the superhydrophobic coating with this special structure has had great achievement in adhesion work, resilience performance, porosity, corrosion resistance, and self-cleaning and antifouling performance. So far, very few reports have analyzed the performance of this special structure. To explain the bounce performance induced by this special trampoline structure, a multidimensional superhydrophobic bouncing mechanism was proposed. Furthermore, this work is expected to provide inspiration for future applications of the unique nonfluorinated trampoline structure in superhydrophobic materials.
受生物学启发，开发具有优异超疏水性能、极短反弹时间和低表面自由能的独特多层分离超疏水结构已成为一个具有挑战性的问题。在这项工作中，通过一种无氟、高效、经济且环保的方法在Al 1060表面制备了超疏水涂层。首先，从可回收的电沉积溶液中获得Ni纳米锥层。然后，通过浸涂技术在Ni纳米锥层上制备硬脂酸，从而得到一种特殊的超疏水表面，称为“蹦床”结构，它与作为基底的Ni纳米锥结构有很大不同。水的接触角为161.3°，滑动角为7°。此外，这种具有特殊结构的超疏水涂层在粘附功、回弹性能、孔隙率、耐腐蚀性以及自清洁和防污性能方面都取得了很大成就。到目前为止，很少有报道分析这种特殊结构的性能。为了解释这种特殊蹦床结构引起的弹跳性能，提出了一种多维超疏水弹跳机制。此外，这项工作有望为独特的非氟化蹦床结构在超疏水材料中的未来应用提供灵感。
