Dynamic Anti-Icing Performance of Flexible Hybrid Superhydropohobic Surfaces

被引:3
|
作者
Hou, Yongping [1 ]
Zhan, Fei [2 ,3 ]
Fan, Wenqi [4 ]
Wang, Lei [2 ]
机构
[1] Beihang Univ, Sch Chem & Environm, Key Lab Bioinspired Smart Interfacial Sci & Techno, Minist Educ, Beijing 100191, Peoples R China
[2] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Key Lab Cryobiomed Engn, Beijing 100190, Peoples R China
[3] Shijiazhuang Tiedao Univ, Sch Elect & Elect Engn, Shijiazhuang 050000, Peoples R China
[4] China Elect Power Res Inst, Power Transmiss & Transformat Engn Dept, Beijing 100055, Peoples R China
基金
中国国家自然科学基金;
关键词
hybrid superhydrophobic; dynamic anti-icing; flexible; microcone arrays; energy loss; self-cleaning; CONTACT TIME; HYSTERESIS; DROPLET;
D O I
10.1021/acsami.3c09298
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Normal superhydrophobic surfaces with a rough topographyprovidepocketed air at the solid-liquid interface, which guides thedroplet to easily detach from the surface at room temperature. However,at low temperatures, this function attenuates obviously. In this research,a flexible hybrid topography with submillimeter (sub-mm) and microconearrays is designed to adjust the impacting behavior of the droplet.The sub-mm cone could provide rigid support to limit deformation,leading to reduced energy consumption during impact processes. However,the microcone could maintain surface superhydrophobicity under differentconditions, preventing droplet breakage and the change of the dropletcontact state during impact processes by providing multiple contactpoints. Under the synergistic effect, such a hybrid structure couldprovide much more pocket air at the solid-liquid interfaceto limit the spreading of liquid droplets and reduce the energy lossduring the impact process. At a low temperature (-5 & DEG;C),even if the impact height is reduced to 1 cm, the droplets still couldbe bound off, and the hybrid superhydrophobic surface presents excellentdynamic anti-icing ability. The special flexible hybrid superhydropohobicsurface has potential application in fast self-cleaning and anti-icingfields.
引用
收藏
页码:41162 / 41169
页数:8
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