Effect of curing temperature and architectural (monolayer and bilayer) of hybrid films modified with polyethylene glycol for the corrosion protection on tinplate

Effect of curing temperature and architectural (monolayer and bilayer) of hybrid films modified with polyethylene glycol for the corrosion protection on tinplate

Hybrid films obtained by a sol-gel process are based on two important reactions: hydrolysis and condensation. The condensation reaction is influenced by the curing temperature, since it induces the development of the intrinsic properties of the gel. The aim of this work is to coat tinplate, a substr...

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Published in:Materials research (São Carlos, São Paulo, Brazil) Vol. 17; no. 4; pp. 1071 - 1081
Main Authors: Kunst, Sandra Raquel, Beltrami, Lilian Vanessa Rossa, Cardoso, Henrique Ribeiro Piaggio, Veja, Maria Rita Ortega, Baldin, Estela Knopp Kerstner, Menezes, Tiago Lemos, Malfatti, Célia de Fraga
Format: Journal Article
Language:English
Published: ABM, ABC, ABPol 01-07-2014
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
Subjects:
bilayered systems
Condensation
Curing
Dip coatings
ENGINEERING, CHEMICAL
Hydrolysis
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
monolayered systems
Packaging
Polyethylene glycol
temperature
Thickness
Tin plate
tinplate
bilayered systems
temperature
monolayered systems
tinplate
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Summary:Hybrid films obtained by a sol-gel process are based on two important reactions: hydrolysis and condensation. The condensation reaction is influenced by the curing temperature, since it induces the development of the intrinsic properties of the gel. The aim of this work is to coat tinplate, a substrate widely used in the packaging industry, with monolayered and bilayered hybrid films modified with polyethylene glycol and obtained through dip-coating. The results showed that the bilayered hybrid film obtained at 60[degrees]C had a higher layer thickness, and the best performance in the electrochemical assays, as well as the most hydrophobic character, in relation to the other samples. For the monolayered systems, the 90[degrees]C-cured system showed a lower layer thickness; however, this system showed a more compact, uniform and less porous layer, and presented better electrochemical impedance results, in comparison with the 60[degrees]C-cured samples.
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content type line 23
ISSN:1516-1439
1980-5373
1980-5373
DOI:10.1590/1516-1439.284614