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Open AccessArticle

Characterization of the Anti-Graffiti Properties of Powder Organic Coatings Applied in Train Field

Department of Industrial Engineering, University of Trento, Via Sommarive, 9, 38123 Trento, Italy
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Mariateresa Lettieri
Coatings 2017, 7(5), 67;
Received: 18 March 2017 / Revised: 14 April 2017 / Accepted: 28 April 2017 / Published: 6 May 2017
(This article belongs to the Special Issue Anti-Graffiti Coatings)
The widespread prevalence of the phenomenon of graffiti and the growth of the removal cost—in particular in public transport systems—has pushed the research for technical solutions to this problem. Suitable solutions to address graffiti-related concerns are needed in order to reduce the cleaning costs as well as the downtime of trains. Graffiti are a big problem for painted metal, because the protective coatings and graffiti have the same chemical nature (polymeric matter). A permanent coating is expected to be able to resist the highest possible number of cleanings of the graffiti without modifying its aesthetic and corrosion protection properties. The purpose of this study is to develop a methodological approach for the characterization of graffiti-resistant organic coatings. For this purpose, a critical review of the existing standards is carried out. The anti-graffiti properties of a polyurethane organic coating were investigated before and after accelerated weathering. In order to understand the behavior of the coatings during cleaning, the aging of the coating in contact with the remover was carried out. The effect on the corrosion protection properties was assessed during the accelerated aging. The resistance of the coating was proved to be strongly affected by the surface finishing. UV exposure modified surface properties and graffiti removal efficiency. View Full-Text
Keywords: organic coating; painted metal; graffiti; graffiti cleaning agents organic coating; painted metal; graffiti; graffiti cleaning agents
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MDPI and ACS Style

Rossi, S.; Fedel, M.; Petrolli, S.; Deflorian, F. Characterization of the Anti-Graffiti Properties of Powder Organic Coatings Applied in Train Field. Coatings 2017, 7, 67.

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