20.500.12556/DiRROS-15806 Exploring the protection mechanism of a combined fluoropolymer coating on sulphide patinated bronze When bronze or artificially patinated bronze is exposed to an outdoor environment that contains aggressive ions such as sulphates, nitrates, and carbonates, the surface of the bronze changes its appearance due to the formation of corrosion products on the surface. Research is being conducted on versatile protective measures that can be used to protect the surface from these changes. A recently synthesised fluoropolymer-based coating with mercaptopropyl groups, i.e. a 3-component fluoropolymer coating FA-MS-SH (silane-modified poly methylmethacrylate (MS) with added mercaptopropyltrimethoxy silane (SH) and a fluoroacrylate (FA)) was explored in detail in this work where its protective mechanism on sulphide patinated bronze was investigated. Electrochemical tests were conducted on the sulphide patinated bronze with and without the 3-component coating FA-MS-SH. Furthermore, FA, MS and SH alone and various combinations and concentrations of FA-MS were studied in order to determine the protective effect and properties of each component. Colour change and contact angle measurements were also defined. FIB-SEM measurements and GCIB-XPS depth profiles were carried out to study surface bonding with the sulphide patina in detail. A mechanism for the protection of sulphide patinated bronze was presented through the use of a multianalytical tool approach. It was shown that FA physisorbed on the patinated surface, while MS and blends of the components chemisorbed on the layer of sulphide patinated bronze, also resulting in the surface being efficiently protected from corrosion processes. bronze protection brown patina fluoropolymer coating bron zaščita rjava patina floropolimerna prevleka true false true Elsevier Sequoia Angleški jezik Slovenski jezik © 2022 The Author(s) Neznano 2022-11-18 09:27:25 2023-05-31 10:56:16 2023-06-15 09:51:55 0000-00-00 00:00:00 2022 0 0 Št. članka 107071; str. 1-13 Vol. 172 Nov. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-08-05 544.5/.6 0300-9440 10.1016/j.porgcoat.2022.107071 117597955 https://www.sciencedirect.com/science/article/pii/S030094402200368X?via%3Dihub Odprti dostop 1 72b34bb4-6712-11ed-a69a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=20907 RAZ_Kosec_Tadeja_2022.pdf RAZ_Kosec_Tadeja_2022.pdf 1 673615E1BE73C38B3EE888EB58692075 1546b6c18701781e0fa935f60633e586f3bed684f1e61baa65afbf92f077c47f 54219efc-812e-11ed-8925-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21134 Zavod za gradbeništvo Slovenije 0 0 0