| TANG Kun,LI Dian-yu,CHEN Zi-lin,DU Jia-bing,ZHANG Ming-jun,MAO Cong,ZHANG Jian,HU Yong-le.Directional Transport Properties of Anisotropic Superhydrophobic Functional Surfaces Prepared by 3D Printing[J],49(9):157-166 |
| Directional Transport Properties of Anisotropic Superhydrophobic Functional Surfaces Prepared by 3D Printing |
| Received:August 16, 2019 Revised:September 20, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.09.017 |
| KeyWord:3D printing anisotropy superhydrophobic wettability directional transport |
| Author | Institution |
| TANG Kun |
Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science & Technology, Changsha , China |
| LI Dian-yu |
Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science & Technology, Changsha , China |
| CHEN Zi-lin |
Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science & Technology, Changsha , China |
| DU Jia-bing |
Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science & Technology, Changsha , China |
| ZHANG Ming-jun |
Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science & Technology, Changsha , China |
| MAO Cong |
Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science & Technology, Changsha , China |
| ZHANG Jian |
Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science & Technology, Changsha , China |
| HU Yong-le |
Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science & Technology, Changsha , China |
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| Abstract: |
| The work aims to prepare the anisotropic superhydrophobic functional surface on the photosensitive resin substrate and realize the directional transport of the droplet. Superhydrophobic arrays with different shapes and sizes were prepared on the substrate by stereo lithography appearance (SLA) method. The surface morphology and chemical composition of the sample were characterized by scanning electron microscopy (SEM) and EDS spectroscopy. The contact angle detection system and high-speed camera were used to analyze and evaluate the superhydrophobic properties, anisotropic wetting degree and directional transport behavior of different array surfaces through droplet bounce, anisotropic wettability and directional transport experiments. The results of droplet bounce experiments showed that the droplets could achieve a cake-like bounce on the cube and interlaced cuboid array, and the superhydrophobic performance of the latter was best. The experimental results of anisotropic wettability showed that the degree of anisotropic wettability tended to be significant with the increase of height difference Δh of adjacent cylinders in the cylindrical array, and it was the most on Δh=1 mm. The cuboid width w1 and adjacent cuboid spacing sp1 of rectangular parallelepiped array also had an effect on anisotropic wettability, and the anisotropic wettability was the most on w1=0.3 mm and sp1=1 mm. The results of directional transport experiments showed that the directional transport performance of the cylindrical array with Δh=1mm and rectangular parallelepiped array with w2=0.7 mm and sp2=0.7 mm were the best, and the droplets could slide accurately along designed routes. The superhydrophobic property, anisotropic wetting degree and directional transport behavior of photosensitive resin-based functional surface prepared by 3D printing are determined by the surface morphology and structure size, and the prepared sample can realize the directional transport of the droplets precisely. |
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