Next Article in Journal
Passive Vibration Reduction Analysis of the Mistuned Blisk Deposited Hard Coating Using Modified Reduced-Order Model
Next Article in Special Issue
Aging of Solvent-Casting PLA-Mg Hydrophobic Films: Impact on Bacterial Adhesion and Viability
Previous Article in Journal
Oxidation Behavior of Ta–Al Multilayer Coatings
Previous Article in Special Issue
Superhydrophobic Cerium-Based Coatings on Al-Mg Alloys and Aluminized Steel

Hydrophobic and Icephobic Behaviour of Polyurethane-Based Nanocomposite Coatings

Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland
Technology Partners Foundation, 5A Pawinskiego Str., 02-106 Warsaw, Poland
Ingeniería de Sistemas para la Defensa de España SA, Beatriz de Bobadilla No. 3, 28040 Madrid, Spain
Instituto Nacional de Técnica Aeroespacial, Área de Materiales Metálicos, Ctra. Ajalvir Km 4, 28850 Torrejón de Ardoz, Spain
Instituto de Ciencia de Materiales de Sevilla (CSIC-US), Americo Vespucio 49, 41092 Seville, Spain
Author to whom correspondence should be addressed.
Coatings 2019, 9(12), 811;
Received: 29 October 2019 / Revised: 27 November 2019 / Accepted: 28 November 2019 / Published: 2 December 2019
(This article belongs to the Special Issue Low-Adhesion Coatings: Fundamentals and Applications)
In this paper, hydrophobic nanocomposite coatings based on polyurethane (PUR) modified by nano-silica and silane-based compounds were manufactured by spraying. The main challenge was to assess and improve the hydrophobic as well as anti-icing properties of initially hydrophilic polymer coatings. The prepared nanocomposite coatings were characterized by means of scanning electron microscopy (SEM), optical profilometry and X-ray photoelectron spectroscopy (XPS). The results obtained showed that in order to achieve hydrophobicity, appropriate amounts of nano-silica must be incorporated in the coating, and complete coverage by nano-silica particles is necessary for achieving hydrophobicity. Coating adhesion and the durability of the hydrophobic behaviour were also studied by scratch test and frosting/defrosting cycles, respectively. The results show that use of both nano-silica and silane-based compounds improve the hydrophobic and anti-icing properties of the coating as compared to a non-modified PUR topcoat. A synergistic effect of both additives was observed. It was also found that the anti-icing behaviour does not necessarily correlate with surface roughness and the materials’ wetting properties. View Full-Text
Keywords: icephobicity; polyurethane; nano-silica; nanocomposite coating; hydrophobicity icephobicity; polyurethane; nano-silica; nanocomposite coating; hydrophobicity
Show Figures

Figure 1

MDPI and ACS Style

Przybyszewski, B.; Boczkowska, A.; Kozera, R.; Mora, J.; Garcia, P.; Aguero, A.; Borras, A. Hydrophobic and Icephobic Behaviour of Polyurethane-Based Nanocomposite Coatings. Coatings 2019, 9, 811.

AMA Style

Przybyszewski B, Boczkowska A, Kozera R, Mora J, Garcia P, Aguero A, Borras A. Hydrophobic and Icephobic Behaviour of Polyurethane-Based Nanocomposite Coatings. Coatings. 2019; 9(12):811.

Chicago/Turabian Style

Przybyszewski, Bartlomiej, Anna Boczkowska, Rafal Kozera, Julio Mora, Paloma Garcia, Alina Aguero, and Ana Borras. 2019. "Hydrophobic and Icephobic Behaviour of Polyurethane-Based Nanocomposite Coatings" Coatings 9, no. 12: 811.

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop