Electrochemical and mechanical behavior of UV curing paint on hybrid films modified with polyethyleneglycol plasticizer applied on tinplate

• Autor(a) principal: Marcolin, Patrícia
• Data de Publicação: 2017
• Outros Autores: Beltrami, Lílian Vanessa Rossa, Boniatti, Rosiana, Salvador, Débora Guerra, Quevedo Reyes, Marcela Citlalim, Bastos, António Alexandre Cunha, Ferreira, Mário Guerreiro Silva, Malfatti, Célia de Fraga, Kunst, Sandra Raquel
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/263165
• topic: Folha de flandres; Revestimentos anti-corrosivos; Filmes híbridos; Hybrid film; PEG; UV curing paint; Corrosion; Tinplate

The objective of this work is to coat tinplate with a hybrid film obtained from a sol-gel process constituted by the alkoxide precursor tetraethoxysilane (TEOS) and 3-trimethoxysilylpropyl methacrylate (TMSM), with the addition of cerium nitrate (0.01 M) and polyethyleneglycol plasticizer (20 g.L-1) to the sol formulation. The films were obtained by dip-coating, applying one and two layers and curing them at different temperatures (60°C and 90°C) for 20 minutes, and adhering UV curing paint to each film respectively. The results showed that the double layered hybrid film obtained at 60°C had a higher layer of thickness and the best performance in the electrochemical assays, in other words, higher resistance to corrosion. Furthermore, in studies following the application of UV coating, the hybrid-film monolayer cured at 60°C wich had an organic coating of cured UV applied to it, achieved a performance similar to that of the pretreated alkyd greenhouse currently used in the metal packaging industry.