Repositorio UFRO · Omeka S

Evaluation in Real Conditions of New Anticorrosive Formulations Based on Polyphenols from Natural Sources and Encapsulated Nanoparticles

Primer Autor	Rojas, David
Co-autores	Ramirez, Jesus Diaz-Gomez, Andres Felipe Montoya, Luis Shiva Samhitha, Saireddy Onate, Angelo Felipe Jaramillo, Andres Francisco Melendrez, Manuel
Título	Evaluation in Real Conditions of New Anticorrosive Formulations Based on Polyphenols from Natural Sources and Encapsulated Nanoparticles
Editorial	MDPI
Revista	COATINGS
Lenguaje	en
Resumen	The objective of this study was to examine the combined protection effect of a two-layer system consisting of organic corrosion inhibitors (tannins derived from the bark of radiata pine) and anodic protection by means of the incorporation of zinc oxide nanoparticles modified superficially by chemical methods to improve the protection of metallic structures against corrosion. Film evaluations are performed in accordance with ISO and ASTM standards. This study also took into account the evaluation of the performance of two commercial coatings according to the scheme suggested by the supplier, in addition to the electrochemical impedance spectroscopy (EIS) characterizations at 0 h, 720 h of accelerated exposure, and 4 months of atmospheric exposure in a corrosive environment of classification C3. The results obtained indicated that the combination of tannins derived from pine bark and encapsulated zinc oxide nanoparticles is a viable alternative to commercial coatings with a higher concentration of synthetic compounds. Although the film properties decrease slightly, performance tests at different exposure times show that they can still be classified as high-performance coatings.
Fecha Publicación	2023
Tipo de Recurso	artículo original
doi	10.3390/coatings13010008
Formato Recurso	PDF
Palabras Claves	atmospheric corrosion corrosion protection epoxy resin tannins ZnO nanoparticles
Ubicación del archivo	http://dx.doi.org/10.3390/coatings13010008
Categoría OCDE	Ciencia de Materiales Física
Materias	corrosión atmosférica protección contra la corrosión resina epoxica taninos Nanopartículas de ZnO
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
License	CC BY 4.0
Condición de la licencia (Recomendado-repetible)	CC BY 4.0
Derechos de acceso	acceso abierto
Access Rights	acceso abierto
Id de Web of Science	WOS:000917100000001
Tipo de ruta	verde# dorado
Categoría WOS	Ciencia de Materiales Física
Referencia del Financiador (Mandatado si es aplicable-repetible)	ANID FONDEQUIP EQM150139 aANID PIA/APOYO CCTE AFB170007 ANID FONDECYT 1190358 ANID FONDEF IDEA ID17i10333 ANID FONDEF IDEA ID16I20190