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Analyses on chemical and mechanical stripping of coatings on metal plate mock-ups (CROSBI ID 708400)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Bilić, Josipa ; Širola, Manuel ; Špada, Vedrana ; Peko, Neven Analyses on chemical and mechanical stripping of coatings on metal plate mock-ups // 27 HSKIKI Abstracts. 2021. str. 1-1

Podaci o odgovornosti

Bilić, Josipa ; Širola, Manuel ; Špada, Vedrana ; Peko, Neven

engleski

Analyses on chemical and mechanical stripping of coatings on metal plate mock-ups

The Conservation of Art in Public Spaces (CAPuS) project, which was funded through the Erasmus+ Knowledge Alliances Programme [1], included research into the products and methods that can be used for specific conservation treatments on contemporary public artworks, predominantly murals and sculptures. The Croatian research group, which was comprised of the METRIS Research Centre, Sisak Municipal Museum and the University of Split – Arts Academy, focused on a large collection of outdoor metal sculptures in Sisak. The sculptures were produced by the artists who participated in the Sisak Steelworks Fine Artists’ Colony (1971 – 1990) [2, 3]. Due to decades of outdoor exposure, most of the painted pieces require paint stripping and repainting. Through the CAPuS project, a methodology was devised for identifying the best method for the removal of aged coatings from a steel substrate. METRIS and Sisak Municipal Museum as partners cooperated on jointly carried out experimental work: selected test analyses for the removal of artificially aged paint coatings [4]. Since conservation- restoration interventions must not inflict damage to the object, various available methods (chemical and mechanical) and products used for the removal of aged coatings needed to be examined in order to find the most suitable one(s) [5, 6]. Thirty mock-up test plates were produced: steel plates coated with commercially available alkyd-based coating system consisting of primer and topcoat, artificially aged in neutral salt spray chamber for 1440 h in C5 corrosivity conditions before being either chemically or mechanically stripped of the paint coatings. The methods used were chemical stripping with 6 commercially available products (four paint- stripping products and two solvents) and mechanical removal of coatings with different abrasive blasting methods, thermo-mechanical method and composite brushes. This poster reports on the visual examination, microscopy (LM, SEM) and chemical analytical methods (EDS, FTIR) that were performed in order to determine the most effective method of stripping of coatings and/or to determine the residues left on the mock-ups after the treatments. Although none of the tested methods completely removed the coatings from the steel substrate, the best results were obtained by dry ice blasting with addition of glass beads, and also blasting with aluminium oxide. The obtained results serve as guidelines for the future restoration works on the painted sculptures from the Sisak Steelworks Sculpture Park. ACKNOWLEDGEMENTS: This work has been funded by European Commission, project Conservation of Art in Public Spaces (acronym CAPuS) funded by Erasmus+ Knowledge Alliances Programme, Project N° 588082-EPP-A-2017-1-IT-EPPKA2-KA. Exposition of the samples in salt spray chamber according to HRN EN ISO 9227 was performed by ReCorrTech Ltd., 10000 Zagreb, Croatia. Dry ice blasting of a group of samples was performed by Hladni Val Ltd., 35400 Nova Gradiška, Croatia.

Coatings removal

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Podaci o prilogu

1-1.

2021.

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objavljeno

Podaci o matičnoj publikaciji

27 HSKIKI Abstracts

Podaci o skupu

27. hrvatski skup kemičara i kemijskih inženjera (27HSKIKI)

poster

05.10.2021-08.10.2021

Veli Lošinj, Hrvatska

Povezanost rada

Interdisciplinarne tehničke znanosti, Kemijsko inženjerstvo, Metalurgija, Strojarstvo