Investigation of Heterogeneous Ice Nucleation on the Micro-Cubic Structure Superhydrophobic Surface for Enhancing Icing-Delay Performance
作者机构：State Key Laboratory of AerodynamicsChina Aerodynamics Research and Development CenterMianyang621000China Key Laboratory of Icing and Anti/De-icingChina Aerodynamics Research and Development CenterMianyang621000China Department of Materials ChemistryQiuzhen SchoolHuzhou UniversityHuzhou313000China College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing210016China
出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)
年 卷 期：2020年第8卷第12期
页 面：1617-1631页
核心收录：
学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0706[理学-大气科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：This work was supported by the National Natural Science Foundation of China(No.51671105,51705244) Natural Science Foundation of Jiangsu Province(No.BK20170790) the Project Funded by China Postdoctoral Science Foundation(No.2019M661826) Fund of State Key Laboratory of Aerodynamics(SKLA2019020401) Open Fund of Key Laboratory of Icing and Anti/De-icing(No.IADL20190202)
主 题：Microstructure configuration superhydrophobic ice nucleation antiicing/icephobic material
摘 要：The aim of this study is to explore the heterogeneous ice nucleation behavior based on controllable micro-cubic array structure surfaces from the statistic *** this end,we firstly constructed a group of micro-cubic array structures on silicon substrates by a selective plasma etching *** grafting low-free-energy substance,the as-constructed micro-cubic array structure surfaces exhibited higher non-wettability with the water contact angle being up to 150°.On this basis,500 cycles of freezing and melting processes were accurately recorded to analyze the instantaneous ice nucleation behavior according to the statistical results of freezing *** a consequence,the statistical freezing temperature of the sample with micro-spacing distance of 40μm is as low as−17.13°*** microstructure configuration(conforming to Cassie-Baxter wetting regime)not only could entrap more air pockets,but also achieved lower solid-liquid contact area,resulting in lower ice nucleation rate(~2–3 orders of magnitude less than that on the flat substrate).Furthermore,the gradually increasing micro-spacing distance to 60μm would induce the transition from CassieBaxter to Wenzel wetting state,leading to higher freezing probability and ice nucleation *** complete understanding on microstructure configuration improving the ice nucleation will lay the foundation stone for the microstructure design of ice-repellent materials.
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