Simple process to fabricate a superhydrophobic coating

Author

Momen, G. ; Farzaneh, Masoud

Author_Institution

Dept. of Atmos. Icing Eng. of Power Networks (INGIVRE), Univ. du Quebec a Chicoutimi, Chicoutimi, QC, Canada

Volume

6

Issue

6

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

405

Lastpage

407

Abstract

The present study investigates a very simple and inexpensive superhydrophobic coating preparation by spray-coating a silicone rubber/stearic acid mixture on a flat surface using a one-step process. The wettability of the coatings was found to be dependent on the surface morphology that was governed by the stearic acid concentration. A water static contact angle of 160° ± 3 and low contact angle hysteresis of 4° ± 1 was obtained for the surface coated with 43 wt% of stearic acid, on which water droplet easily roll off and bounce. At supercooled temperature (-15°C) the fabricated superhydrophobic coating showed an important delayed freezing time and icephobic behaviour.

Keywords

contact angle; freezing; hydrophobicity; silicone rubber; spray coatings; supercooling; surface morphology; wetting; contact angle hysteresis; freezing time; icephobic behaviour; silicone rubber-stearic acid mixture; spray-coating; stearic acid concentration; supercooled temperature; superhydrophobic coating; surface morphology; temperature -15 degC; water droplet; water static contact angle; wettability;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2011.0222

Filename

5960459