Μελέτη φιλικών προς το περιβάλλον αντιρρυπαντικών επιστρωμάτων για τη βελτίωση της ενεργειακής αποδοτικότητας των πλοίων

Κιοσίδου, Ευαγγελία; Kiosidou, Evangelia

dc.contributor.author	Κιοσίδου, Ευαγγελία	el
dc.contributor.author	Kiosidou, Evangelia	en
dc.date.accessioned	2018-04-27T10:39:49Z
dc.date.issued	2018-04-27
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/46884
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.2930
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/gr/	*
dc.subject	Διάβρωση	el
dc.subject	Υδροδυναμική	el
dc.subject	Υφαλοχρώματα	el
dc.subject	Ηλεκτροχημεία	el
dc.subject	Hydrodynamics	en
dc.subject	Antifouling Marine Paints	el
dc.subject	Electrochemistry	el
dc.subject	Antifouling Assessment	el
dc.subject	Anticorrosion efficiency	el
dc.title	Μελέτη φιλικών προς το περιβάλλον αντιρρυπαντικών επιστρωμάτων για τη βελτίωση της ενεργειακής αποδοτικότητας των πλοίων	el
dc.title	Study of environmentally friendly antifouling coatings to optimize the energy efficiency of ships	en
dc.contributor.department	Τομέας Θαλασσίων Κατασκευών	el
heal.type	doctoralThesis
heal.classification	Ships--Corrosion	el
heal.classification	ΝΑΥΠΗΓΙΚΗ ΤΕΧΝΟΛΟΓΙΑ	el
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85121599
heal.classificationURI	http://data.seab.gr/concepts/97726161116a914fe9fcf38119219ae532471c9d
heal.dateAvailable	2019-04-26T21:00:00Z
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2018-03-26
heal.abstract	In the present PhD thesis, commercial and experimental antifouling painting systems were examined, in terms of antifouling, anticorrosion and hydrodynamic efficiency and with regard to their mechanical and physical properties. The examined paints were of silicone, polyurethane (PU) and acrylic formulations. Five antifouling (AF) systems were tested, while also an anti-corrosive system, without antifouling effect, was examined for comparative purposes. The experimental formulations were developed in the framework of the FP7 European Collaborative Project Foul-X-Spel (Grant Agreement 285552). Anticorrosion assessment was performed through accelerated aging tests, namely salt spray tests (ISO 14993:2001), UV tests (ASTM G 154-06) and immersion in artificial seawater at room temperature.The objective of these experiments was to determine the barrier properties of each painting system in intact state using electrochemical impedance spectroscopy (EIS). In addition, optical and mechanical properties were examined. Experiments on painted steel samples with scribes were performed for 12 weeks in salt spray exposure. The aim of this test was to examine the barrier properties that the unscratched part of the paint provides. The observed rust morphology in the area of the scribes was correlated with the paint efficiency and a ranking between the examined painting systems was performed. Rust morphology characterization was performed through XRD, Raman spectroscopy and SEM observation. The next step of this study included electrochemical examination of the rusted, scribed specimens at 6, 8 and 12-week intervals and included EIS and linear polarization resistance (LPR) methods. Fitting of the experimental impedance curves was performed through Particle Swarm Optimization and Complex Non-Linear Least Squares Fitting procedures and for a selected number of representative diffusion models, which could potentially describe the mode of corrosion during the course of the salt spray experiment. Antifouling assessment included static immersion tests in Elefsis Gulf for one year. Six (6) specimens per painting system were immersed in the field. Every two months a specimen was removed from site and examined in the laboratory, in terms of fouling density, types of foulers and physical damage of the paint. Periodic examination included also measurement of the barrier properties of the coated steel samples using EIS, while also optical and mechanical properties were examined. Hydrodynamic tests included flat plate resistance tests in three conditions: smooth, painted with each one of the examined antifouling coating systems (arbitrary roughness) and covered with sandpapers of 40 and 80-grit size (homogeneous roughness). The experiments were performed in the experimental towing tank of the Laboratory of Ship and Marine Hydrodynamics (LSMH) at various speeds (or Reynolds numbers) and drag measurements for each case were performed, in order to compare the drag effect caused by each condition. Examination of the painting systems in terms of mechanical and physical properties included water-liquid transmission rate, cupping, chalking and dirt pick up tests, according to the corresponding stabdards (ISO/ASTM). The investigation performed during the present thesis intended to offer a thorough analysis for a comprehensive assessment of the effciency of commercial and experimental antifouling (or organic, in general) paints. (en) (el)	el
heal.sponsor	Υπότροφος ΕΛΚΕ-ΕΜΠ για τα έτη 2012-2016	el
heal.advisorName	Παντελής, Δημήτριος	el
heal.advisorName	Pantelis, Dimitrios	en
heal.committeeMemberName	Παντελής, Δημήτριος	el
heal.committeeMemberName	Καραντώνης, Αντώνης	el
heal.committeeMemberName	Τζαμπίρας, Γεώργιος	el
heal.committeeMemberName	Παυλάτου, Ευαγγελία	el
heal.committeeMemberName	Μανωλάκος, Δημήτριος	el
heal.committeeMemberName	Τριανταφύλλου, Γεώργιος	el
heal.committeeMemberName	Τσούβαλης, Νικόλαος	el
heal.committeeMemberName	Pantelis, Dimitrios	en
heal.committeeMemberName	Karantonis, Antonis	en
heal.committeeMemberName	Tzabiras, Georgios	en
heal.committeeMemberName	Pavlatou, Evangelia	en
heal.committeeMemberName	Manolakos, Dimitrios	en
heal.committeeMemberName	Triantafyllou, Georgios	el
heal.committeeMemberName	Tsouvalis, Nikolaos	en
heal.academicPublisher	Σχολή Ναυπηγών Μηχανολόγων Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	398
heal.fullTextAvailability	true