Issue 19, 2013
From the journal:

Journal of Materials Chemistry A

Extraordinary drag-reducing effect of a superhydrophobic coating on a macroscopic model ship at high speed†

Hongyu Dong,‡a   Mengjiao Cheng,‡a   Yajun Zhang,a   Hao Wei*b  and  Feng Shi*a  

* Corresponding authors

a State Key Laboratory of Chemical Resource Engineering and State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, Beijing, P. R. China
E-mail: shi@mail.buct.edu.cn
Tel: +86 010 64423889

b Institute of Advanced Marine Materials, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, P. R. China
E-mail: weihao_chem@yahoo.com.cn

Abstract

We have fabricated a self-cleaning coating on a model ship with a large and curved surface by electroless deposition of gold aggregates, and the superhydrophobic model ship exhibited a remarkable drag reduction of 38.5% at a velocity of 0.46 m s−1. The as-prepared coating exhibits excellent superhydrophobic properties, with a contact angle as high as 159.7°. To rule out the influence of wetting area differences between superhydrophobic coated materials and normal materials, we modified the large curved surface of a model ship with the self-cleaning coating and investigated its drag reducing properties at high speed. The results showed that the superhydrophobic coating took effect in reducing drag; the mechanism of the drag reduction is discussed based on the plastron effect and Newton's law of viscosity.

Graphical abstract: Extraordinary drag-reducing effect of a superhydrophobic coating on a macroscopic model ship at high speed

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Article information

DOI
https://doi.org/10.1039/C3TA10225D
Article type
Paper
Submitted
16 Jan 2013
Accepted
05 Mar 2013
First published
05 Mar 2013

J. Mater. Chem. A, 2013,1, 5886-5891

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Extraordinary drag-reducing effect of a superhydrophobic coating on a macroscopic model ship at high speed

H. Dong, M. Cheng, Y. Zhang, H. Wei and F. Shi, J. Mater. Chem. A, 2013, 1, 5886 DOI: 10.1039/C3TA10225D

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