A Simple, Low-cost Method to Fabricate Drag-reducing Coatings on a Macroscopic Model Ship

doi:10.1007/s40242-018-8032-2

Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (4): 616-621.doi: 10.1007/s40242-018-8032-2

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A Simple, Low-cost Method to Fabricate Drag-reducing Coatings on a Macroscopic Model Ship

WANG Zhipeng¹, ZHANG Songsong², GAO Shan², OUYANG Xiao², LI Jie², LI Rui¹, WEI Hao², SHUAI Zhijun¹, LI Wanyou¹, LYU Shanshan³

1. College of Power & Energy Engineering, Harbin Engineering University, Harbin 150001, P. R. China;
2. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education & College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China;
3. State Key Laboratory of Chemical Resource Engineering & Key Laboratory of Carbon Fiber and Functional Polymer, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, P. R. China

Received:2018-01-25 Online:2018-08-01 Published:2018-04-16
Contact: LI Wanyou, LYU Shanshan E-mail:liwanyou@hrbeu.edu.cn;lvshanshan@mail.buct.edu.cn
Supported by:
Supported by the Fundamental Research Funds of the Central Universities of China(No.HEUCFJ161003).

Abstract

Abstract: A low-cost method was used to fabricate superhydrophobic coatings on a macroscopic model ship and the drag-reducing effect was investigated at both low and high speed. Hierarchical structures of the superhydrophobic copper coatings were characterized by means of scanning electron microscopy(SEM) and X-ray diffraction(XRD). Drag coefficient tests on surfaces with different wettability(superhydrophilic, hydrophilic, hydrophobic and superhydrophobic surfaces) showed that the as-prepared superhydrophobic surface exhibited a high remarkable drag reduction of 81% at a low speed of 1 mm/s. In the drag-reducing tests with model ship, the superhydrophobic coatings also exhibited around 16% drag reduction at a velocity of 0.3 m/s.

Key words: Low-cost superhydrophobic coating, Wettability, Water adhesive force, Drag reduction, Drag coefficient

WANG Zhipeng, ZHANG Songsong, GAO Shan, OUYANG Xiao, LI Jie, LI Rui, WEI Hao, SHUAI Zhijun, LI Wanyou, LYU Shanshan. A Simple, Low-cost Method to Fabricate Drag-reducing Coatings on a Macroscopic Model Ship[J]. Chemical Research in Chinese Universities, 2018, 34(4): 616-621.

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A Simple, Low-cost Method to Fabricate Drag-reducing Coatings on a Macroscopic Model Ship

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