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Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic Properties
Article

Hydrophobic and Anti-Icing Behavior of UV-Laser-Treated Polyester Resin-Based Gelcoats

1
Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Woloska 141, 02-507 Warszawa, Poland
2
Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland
3
Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Gdańsk, ul. Fiszera 14, 80-231 Gdansk, Poland
4
Nanotechnology on Surfaces and Plasma, Institute of Materials Science of Seville, Spanish National Research Council—University of Seville c/Américo Vespucio, 49 41092 Isla de la Cartuja, Spain
*
Author to whom correspondence should be addressed.
Processes 2020, 8(12), 1642; https://doi.org/10.3390/pr8121642
Received: 9 November 2020 / Revised: 1 December 2020 / Accepted: 6 December 2020 / Published: 12 December 2020
(This article belongs to the Special Issue Preparation and Characterization of Hybrid Nanocomposites)
Ice accumulation on wind turbine blades due to the impact of supercooled water droplets can be reduced by the application of surfaces with anti-icing properties. Hydrophobic surfaces are considered as a promising solution because of their water repellent behavior. In recent years, short-pulsed laser technologies have been developed as an efficient technique to modify the surface properties of materials. However, the anti-icing properties of such surfaces have not yet been validated. In this work, a hybrid modification of polyester resin-based gelcoats was adopted. Laser patterning (LP) was used to produce periodic surface structures on modified unsaturated polyester resin (UPR) substrates. One of the innovations of this research is the utilization of novel purpose-made chemical modifiers for gelcoats. The implementation of linear polymethylhydrosiloxane (PMHS) as a building block is a key improvement in terms of durability and functionality of the coating, since there is an option of introducing not only groups bonding in the polyester into one molecule, but also groups that increase hydrophobicity. The other novelty is a successfully conducted experiment combining such chemical modification with laser texturization of the surface. The influence of the laser energy, pattern shape, and spatial periods on the topographical characteristics and hydrophobicity as well as the anti-icing properties of the produced surfaces were investigated. To characterize the surface topography of the produced structures, scanning electron microscopy (SEM) and profilometer were utilized. Measurements of the wettability parameters (static contact angle and contact angle hysteresis) on the treated surfaces allowed the identification of the influence of wetting behavior and laser parameters on the investigated materials. Anti-icing properties were characterized by ice adhesion (IA) and freezing delay time (FDT) tests. It was found that hybrid modification of unsaturated polyester resin by chemical modifiers and laser treatment increased the hydrophobic and anti-icing properties of polyester gelcoats. View Full-Text
Keywords: icephobicity; hydrophobicity; ice adhesion; unsaturated polyester resin; polyhedral oligomeric; silsesquioxane; freezing delay time; laser texturization icephobicity; hydrophobicity; ice adhesion; unsaturated polyester resin; polyhedral oligomeric; silsesquioxane; freezing delay time; laser texturization
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MDPI and ACS Style

Kozera, R.; Przybyszewski, B.; Krawczyk, Z.D.; Boczkowska, A.; Sztorch, B.; Przekop, R.E.; Barbucha, R.; Tański, M.; Garcia-Casas, X.; Borras, A. Hydrophobic and Anti-Icing Behavior of UV-Laser-Treated Polyester Resin-Based Gelcoats. Processes 2020, 8, 1642. https://doi.org/10.3390/pr8121642

AMA Style

Kozera R, Przybyszewski B, Krawczyk ZD, Boczkowska A, Sztorch B, Przekop RE, Barbucha R, Tański M, Garcia-Casas X, Borras A. Hydrophobic and Anti-Icing Behavior of UV-Laser-Treated Polyester Resin-Based Gelcoats. Processes. 2020; 8(12):1642. https://doi.org/10.3390/pr8121642

Chicago/Turabian Style

Kozera, Rafał, Bartłomiej Przybyszewski, Zuzanna D. Krawczyk, Anna Boczkowska, Bogna Sztorch, Robert E. Przekop, Robert Barbucha, Mateusz Tański, Xabier Garcia-Casas, and Ana Borras. 2020. "Hydrophobic and Anti-Icing Behavior of UV-Laser-Treated Polyester Resin-Based Gelcoats" Processes 8, no. 12: 1642. https://doi.org/10.3390/pr8121642

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