When superhydrophobic coatings are icephobic : role of surface topology

Among different types of anti-icing coatings, superhydrophobic coatings have attracted considerable attention due to their water repellency and low heat-transfer rate. However, condensation on superhydrophobic surfaces at low temperatures usually causes an increase in ice adhesion because of the ind...

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Main Authors: Chen, Zhong, Wu, Xinghua, Silberschmidt, Vadim V., Hu, Zhong-Ting
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2019
Subjects:
Online Access:https://hdl.handle.net/10356/105604
http://hdl.handle.net/10220/50230
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1056042023-07-14T15:55:52Z When superhydrophobic coatings are icephobic : role of surface topology Chen, Zhong Wu, Xinghua Silberschmidt, Vadim V. Hu, Zhong-Ting School of Materials Science & Engineering Engineering::Materials::Composite materials Icephobic Anti-icing Among different types of anti-icing coatings, superhydrophobic coatings have attracted considerable attention due to their water repellency and low heat-transfer rate. However, condensation on superhydrophobic surfaces at low temperatures usually causes an increase in ice adhesion because of the induced wetting of micro- and nanostructures. By tuning the weight ratio of surface-modified nanoparticles to unmodified ones, five superhydrophobic coatings with different structural features at the microscale were developed. Ice-adhesion strength and ice-nucleation temperature were studied, together with the effect of moisture condensation on ice adhesion. It was found that the ice-adhesion strength and icing temperature of these coatings do not necessarily follow the same order among these surfaces because of different mechanisms involved. Surface roughness is inadequate to describe the necessary surface features that critically affect the anti-icing behavior of the coatings. Detailed topology/geometry has to be considered when designing icephobic coatings. Superhydrophobic coatings can be adopted for icephobic applications once the surface topology is carefully designed. ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version 2019-10-23T02:35:31Z 2019-12-06T21:54:19Z 2019-10-23T02:35:31Z 2019-12-06T21:54:19Z 2018 Journal Article Wu, X., Silberschmidt, V. V., Hu, Z.-T., & Chen, Z. (2019). When superhydrophobic coatings are icephobic : role of surface topology. Surface and Coatings Technology, 358, 207-214. doi:10.1016/j.surfcoat.2018.11.039 0257-8972 https://hdl.handle.net/10356/105604 http://hdl.handle.net/10220/50230 10.1016/j.surfcoat.2018.11.039 en Surface and Coatings Technology © 2018 Elsevier B.V. All rights reserved. This paper was published in Surface and Coatings Technology and is made available with permission of Elsevier B.V. 28 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials::Composite materials
Icephobic
Anti-icing
spellingShingle Engineering::Materials::Composite materials
Icephobic
Anti-icing
Chen, Zhong
Wu, Xinghua
Silberschmidt, Vadim V.
Hu, Zhong-Ting
When superhydrophobic coatings are icephobic : role of surface topology
description Among different types of anti-icing coatings, superhydrophobic coatings have attracted considerable attention due to their water repellency and low heat-transfer rate. However, condensation on superhydrophobic surfaces at low temperatures usually causes an increase in ice adhesion because of the induced wetting of micro- and nanostructures. By tuning the weight ratio of surface-modified nanoparticles to unmodified ones, five superhydrophobic coatings with different structural features at the microscale were developed. Ice-adhesion strength and ice-nucleation temperature were studied, together with the effect of moisture condensation on ice adhesion. It was found that the ice-adhesion strength and icing temperature of these coatings do not necessarily follow the same order among these surfaces because of different mechanisms involved. Surface roughness is inadequate to describe the necessary surface features that critically affect the anti-icing behavior of the coatings. Detailed topology/geometry has to be considered when designing icephobic coatings. Superhydrophobic coatings can be adopted for icephobic applications once the surface topology is carefully designed.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Chen, Zhong
Wu, Xinghua
Silberschmidt, Vadim V.
Hu, Zhong-Ting
format Article
author Chen, Zhong
Wu, Xinghua
Silberschmidt, Vadim V.
Hu, Zhong-Ting
author_sort Chen, Zhong
title When superhydrophobic coatings are icephobic : role of surface topology
title_short When superhydrophobic coatings are icephobic : role of surface topology
title_full When superhydrophobic coatings are icephobic : role of surface topology
title_fullStr When superhydrophobic coatings are icephobic : role of surface topology
title_full_unstemmed When superhydrophobic coatings are icephobic : role of surface topology
title_sort when superhydrophobic coatings are icephobic : role of surface topology
publishDate 2019
url https://hdl.handle.net/10356/105604
http://hdl.handle.net/10220/50230
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