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Development Of Multilayer Coating Systems For Self-Healing Protection And Corrosion Mitigation In The Atmospheric Zone Of Offshore Wind Turbines.

Offshore metallic structures have an average life-time of 20-25 years. They consist of four different zones, the buried, the submerged, the tidal/splash and the atmospheric one. According to NACE 2013 the global corrosion cost is estimated to be US$2.5 trillion, consisting a major economic problem. Hence, protection from corrosion is essential. Each zone is protected either with cathodic methods, or with a combination of cathodic methods and coatings. More specifically, the protection of the atmospheric zone, which is the aim of this research, due to the lack of continuous electrolyte (seawater) does not allow the application of cathodic protection.

Product Number: 51322-17691-SG
Author: Adamantini Loukodimou, Dimitrios Statharas, David Weston, Shiladitya Paul
Publication Date: 2022
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Offshore wind turbines are subjected to harsh marine environment, which can cause detrimental problems to their integrity due to corrosion. Offshore wind energy is considered to play an important role on the net zero emissions by 2050, contributing to environmental protection, hence the long-term protection from corrosion of these offshore structures is of high importance. In this work the formation of microcapsules, loaded with corrosion inhibitor liquid is presented. More specifically the microcapsules consist of polystyrene shell and 3-octanoylthio-1-propyltriethoxysilane core. The formation of the microcapsules was achieved by testing different variables such as four agitation rates and three different emulsifiers. The experiments revealed that the optimum diameter size was achieved in agitation rates between 400 and 500 rpm and with sodium dodecylbenzene sulfonate (SDBS) as emulsifier. Agitation times were also tested. Hence, this work highlights the formation of microcapsules with self-healing properties, which can offer corrosion solution to offshore wind turbines when used as part of a coating system.

Offshore wind turbines are subjected to harsh marine environment, which can cause detrimental problems to their integrity due to corrosion. Offshore wind energy is considered to play an important role on the net zero emissions by 2050, contributing to environmental protection, hence the long-term protection from corrosion of these offshore structures is of high importance. In this work the formation of microcapsules, loaded with corrosion inhibitor liquid is presented. More specifically the microcapsules consist of polystyrene shell and 3-octanoylthio-1-propyltriethoxysilane core. The formation of the microcapsules was achieved by testing different variables such as four agitation rates and three different emulsifiers. The experiments revealed that the optimum diameter size was achieved in agitation rates between 400 and 500 rpm and with sodium dodecylbenzene sulfonate (SDBS) as emulsifier. Agitation times were also tested. Hence, this work highlights the formation of microcapsules with self-healing properties, which can offer corrosion solution to offshore wind turbines when used as part of a coating system.

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