Xi, Z., He, X., Wu, Z. et al. (2 more authors) (2023) A rapid one-step preparation method of the repairable three-dimensional antifouling superhydrophobic 2.5EPZF coating on magnesium alloys. Surfaces and Interfaces, 42 (Part B). 103476. ISSN 2468-0230
Abstract
Although three-dimensional (3D) superhydrophobic coating has been gradually prepared on the surface of metal substrate for anticorrosion and antifouling, their complex preparation steps and equipment requirements limit their practical application. Herein, by a rapid one-step spray preparation method the fabricating 3D superhydrophobic 2.5EPZF (2.5 g epoxy resin/polycaprolactone (PCL)/zinc oxide/perfluorodecyltriethoxysilane) coating is prepared. This method utilizes a certain degree of directional arrangement of macromolecular long chain polymers (PCL) as solvent evaporation during the spraying process to form a filamentous structure to construct the 3D coating. This preparation mechanism provides us a novel theoretical guidance method for preparing 3D coating. Further, the silk thickness and mesh density of the 3D mesh structure is controlled by adding epoxy resin. When the amount of epoxy resin is 2.5 g, the surface of 2.5EPZF coating is with about 1–3 μm thick branch frame and 0.1–0.4 μm thin treetop. And the water-contact angle (CA) of 2.5EPZF is 156.6 ± 1.5° and the sliding angle (SA) is < 10°. The 2.5EPZF coating exhibits durable antifouling, strong mechanical & chemical durability, and corrosion resistance. The corrosion current of the 2.5EPZF coating for 0 day's immersion and 35 days’ immersion in NaCl solution is 1.043 × 10−12 A•cm−2 and 1.1703 × 10−11 A•cm−2, respectively. Under solar irradiation and at 50 °C for 30 min, the 2.5EPZF coating is with scratching recovering. Additionally, the composite coating can be prepared by a large area. It is expected that this method is readily used and shows great application potentials.
In this work, the superhydrophobic 2.5EPZF composite coating was prepared by one-step spraying method. The directional arrangement mechanization of macromolecular long chain polymers (PCL) as solvent evaporation during the spraying process to form a filamentous structure to construct provided a new preparation pathway to prepare the 3D coating. This preparation mechanism provides us a novel theoretical guidance method for preparing 3D coating. Further, the silk thickness and mesh density of the 3D mesh structure is controlled by adding epoxy resin. When the amount of epoxy resin is 2.5 g, the 2.5EPZF coating exhibits durable antifouling, strong mechanical & chemical durability, and corrosion resistance. And this method could be used for large-scale 3D coating's preparation without the limitation of the substrate's shape.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. This is an author produced version of an article published in Surfaces and Interfaces. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | PCL, Epoxy, Magnesium alloys, Three-dimensional coating, Superhydrophobic, Anticorrosion and antifouling |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Functional Surfaces (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 08 Nov 2023 09:59 |
Last Modified: | 07 Oct 2024 00:13 |
Published Version: | https://www.sciencedirect.com/science/article/pii/... |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.surfin.2023.103476 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:205019 |