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Open AccessArticle

Superhydrophobic Coatings as Anti-Icing Systems for Small Aircraft

Department of Materials and Structures and Department of On Board Systems, CIRA–Italian Aerospace Research Centre, Via Maiorise, 1, 81043 Capua, Italy
PW-Metrol, Książnice 28, 39-300 Mielec, Poland
Department of Chemical Engineering, Materials and Environment, Sapienza University of Rome, Italy–INSTM Reference Laboratory for Engineering of Surface Treatments, 00185 Rome, Italy
Author to whom correspondence should be addressed.
Aerospace 2020, 7(1), 2;
Received: 26 November 2019 / Revised: 12 December 2019 / Accepted: 25 December 2019 / Published: 2 January 2020
(This article belongs to the Special Issue 9th EASN International Conference on Innovation in Aviation & Space)
Traditional anti-icing/de-icing systems, i.e., thermal and pneumatic, in most cases require a power consumption not always allowable in small aircraft. Therefore, the use of passive systems, able to delay the ice formation, or reduce the ice adhesion strength once formed, with no additional energy consumption, can be considered as the most promising solution to solve the problem of the ice formation, most of all, for small aircraft. In some cases, the combination of a traditional icing protection system (electrical, pneumatic, and thermal) and the passive coatings can be considered as a strategic instrument to reduce the energy consumption. The effort of the present work was to develop a superhydrophobic coating, able to reduce the surface free energy (SFE) and the work of adhesion (WA) of substrates, by a simplified and non-expensive method. The developed coating, applied as a common paint with an aerograph, is able to reduce the SFE of substrates by 99% and the WA by 94%. The effects of both chemistry and surface morphology on the wettability of surfaces were also studied. In the reference samples, the higher the roughness, the lower the SFE and the WA. In coated samples with roughness ranging from 0.4 and 3 µm no relevant variations in water contact angle, nor in SFE and WA were observed.
Keywords: superhydrophobic; coating; anti-icing; spray-coat; aeronautical superhydrophobic; coating; anti-icing; spray-coat; aeronautical
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MDPI and ACS Style

Piscitelli, F.; Chiariello, A.; Dabkowski, D.; Corraro, G.; Marra, F.; Palma, L.D. Superhydrophobic Coatings as Anti-Icing Systems for Small Aircraft. Aerospace 2020, 7, 2.

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