Delay in the Freezing of Supercooled Water Drops on Superhydrophobic Surfaces of Silicone Rubber at Negative Temperatures
- Authors: Bezdomnikov A.A.1,2, Emel’yanenko A.M.1,3, Emel’yanenko K.A.1, Boinovich L.B.1,3
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Affiliations:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Moscow Institute of Fine Chemical Technology
- Mendeleev University of Chemical Technology
- Issue: Vol 92, No 1 (2018)
- Pages: 178-184
- Section: Physical Chemistry of Surface Phenomena
- URL: https://journals.rcsi.science/0036-0244/article/view/169875
- DOI: https://doi.org/10.1134/S0036024418010077
- ID: 169875
Cite item
Abstract
A method is proposed for fabricating textured superhydrophobic surfaces of silicone rubber with mechanical resistance toward liquid or freezing aqueous solutions. The anti-icing characteristics of silicone rubber samples that differ in the wetting characteristics and mechanical stability of their micro- and nanotextures are derived by analyzing the delays in the freezing of supercooled sessile water drops deposited on the sample surface. The longest delay in freezings are observed for sessile water drops on superhydrophobic surfaces prepared by laser texturing with subsequent application of a layer of a hydrophobic agent to consolidate the textural elements. Delay in freezings can be as long as tens of hours on such surfaces at T = −18°C. The prepared superhydrophobic surfaces exhibit greater anti-icing ability with respect to aqueous salt solutions than to deionized water.
About the authors
A. A. Bezdomnikov
Frumkin Institute of Physical Chemistry and Electrochemistry; Moscow Institute of Fine Chemical Technology
Email: ame@phyche.ac.ru
Russian Federation, Moscow, 199071; Moscow, 117571
A. M. Emel’yanenko
Frumkin Institute of Physical Chemistry and Electrochemistry; Mendeleev University of Chemical Technology
Email: ame@phyche.ac.ru
Russian Federation, Moscow, 199071; Moscow, 125047
K. A. Emel’yanenko
Frumkin Institute of Physical Chemistry and Electrochemistry
Author for correspondence.
Email: ame@phyche.ac.ru
Russian Federation, Moscow, 199071
L. B. Boinovich
Frumkin Institute of Physical Chemistry and Electrochemistry; Mendeleev University of Chemical Technology
Email: ame@phyche.ac.ru
Russian Federation, Moscow, 199071; Moscow, 125047