Title :
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
fDate :
6/1/2011 12:00:00 AM
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;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2011.0222
