Environmentally friendly, nano lithium silicate anticorrosive coatings

Autores
Canosa, Guadalupe; Alfieri, Paula Vanesa; Giudice, Carlos Alberto
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The aim of this study was to develop environmentally friendly, nano-structured inorganic coatings suitable for the protection of metal substrates. The formulation variables included (i) two binders based on lithium silicate of 7.5/1.0 silica/alkali molar ratio (one of them a commercial colloidal solution, and the other a laboratory-prepared nanosolution), (ii) eight pigment compositions based on two spherical microzinc alone (D 50/50 4 and 8 μm) and mixed with spherical nanozinc in three microzinc/nanozinc (w/w) ratios (90/10, 80/20 and 70/30) and finally (iii) six values of pigment volume concentration, PVC (from 47.5 to 70.0%). The electrode potentials were measured in sodium chloride solution at 25 °C and pH 7.0 during 70 days to establish the evolution of cathodic protection; in addition, panels were exposed in salt spray (fog) chamber to determine the degree of rusting and in 100% relative humidity to evaluate the blistering resistance. It was concluded that the variables alkaline silicate type, pigment composition and PVC values exhibited an important influence on the anticorrosive efficiency; very good performance was achieved with the nano-structured inorganic binder (7.5/1.0 SiO 2/Li 2O molar ratio) and the fine spherical microzinc (D 50/50 4 μm) modified with nanozinc (similar efficiency for 80/20 and 70/30 microzinc/nanozinc, w/w, ratios), in a wide range of PVC values (from 52.5 to 65.0% and from 47.5 to 60.0%, respectively).
Fil: Canosa, Guadalupe. Universidad Tecnologica Nacional. Facultad Regional La Plata; Argentina
Fil: Alfieri, Paula Vanesa. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
Fil: Giudice, Carlos Alberto. Universidad Tecnologica Nacional. Facultad Regional La Plata; Argentina
Materia
DEGREE OF BLISTERING
DEGREE OF RUSTING
ELECTRODE POTENTIAL
LITHIUM SILICATE
MICROZINC
NANOZINC
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/93914
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/93914
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Environmentally friendly, nano lithium silicate anticorrosive coatingsCanosa, GuadalupeAlfieri, Paula VanesaGiudice, Carlos AlbertoDEGREE OF BLISTERINGDEGREE OF RUSTINGELECTRODE POTENTIALLITHIUM SILICATEMICROZINCNANOZINChttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The aim of this study was to develop environmentally friendly, nano-structured inorganic coatings suitable for the protection of metal substrates. The formulation variables included (i) two binders based on lithium silicate of 7.5/1.0 silica/alkali molar ratio (one of them a commercial colloidal solution, and the other a laboratory-prepared nanosolution), (ii) eight pigment compositions based on two spherical microzinc alone (D 50/50 4 and 8 μm) and mixed with spherical nanozinc in three microzinc/nanozinc (w/w) ratios (90/10, 80/20 and 70/30) and finally (iii) six values of pigment volume concentration, PVC (from 47.5 to 70.0%). The electrode potentials were measured in sodium chloride solution at 25 °C and pH 7.0 during 70 days to establish the evolution of cathodic protection; in addition, panels were exposed in salt spray (fog) chamber to determine the degree of rusting and in 100% relative humidity to evaluate the blistering resistance. It was concluded that the variables alkaline silicate type, pigment composition and PVC values exhibited an important influence on the anticorrosive efficiency; very good performance was achieved with the nano-structured inorganic binder (7.5/1.0 SiO 2/Li 2O molar ratio) and the fine spherical microzinc (D 50/50 4 μm) modified with nanozinc (similar efficiency for 80/20 and 70/30 microzinc/nanozinc, w/w, ratios), in a wide range of PVC values (from 52.5 to 65.0% and from 47.5 to 60.0%, respectively).Fil: Canosa, Guadalupe. Universidad Tecnologica Nacional. Facultad Regional La Plata; ArgentinaFil: Alfieri, Paula Vanesa. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; ArgentinaFil: Giudice, Carlos Alberto. Universidad Tecnologica Nacional. Facultad Regional La Plata; ArgentinaElsevier Science Sa2012-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/93914Canosa, Guadalupe; Alfieri, Paula Vanesa; Giudice, Carlos Alberto; Environmentally friendly, nano lithium silicate anticorrosive coatings; Elsevier Science Sa; Progress in Organic Coatings; 73; 2-3; 2-2012; 178-1850300-9440CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0300944011003146info:eu-repo/semantics/altIdentifier/doi/10.1016/j.porgcoat.2011.10.013info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:00:45Zoai:ri.conicet.gov.ar:11336/93914instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:00:45.489CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Environmentally friendly, nano lithium silicate anticorrosive coatings
title Environmentally friendly, nano lithium silicate anticorrosive coatings
spellingShingle Environmentally friendly, nano lithium silicate anticorrosive coatings
Canosa, Guadalupe
DEGREE OF BLISTERING
DEGREE OF RUSTING
ELECTRODE POTENTIAL
LITHIUM SILICATE
MICROZINC
NANOZINC
title_short Environmentally friendly, nano lithium silicate anticorrosive coatings
title_full Environmentally friendly, nano lithium silicate anticorrosive coatings
title_fullStr Environmentally friendly, nano lithium silicate anticorrosive coatings
title_full_unstemmed Environmentally friendly, nano lithium silicate anticorrosive coatings
title_sort Environmentally friendly, nano lithium silicate anticorrosive coatings
dc.creator.none.fl_str_mv Canosa, Guadalupe
Alfieri, Paula Vanesa
Giudice, Carlos Alberto
author Canosa, Guadalupe
author_facet Canosa, Guadalupe
Alfieri, Paula Vanesa
Giudice, Carlos Alberto
author_role author
author2 Alfieri, Paula Vanesa
Giudice, Carlos Alberto
author2_role author
author
dc.subject.none.fl_str_mv DEGREE OF BLISTERING
DEGREE OF RUSTING
ELECTRODE POTENTIAL
LITHIUM SILICATE
MICROZINC
NANOZINC
topic DEGREE OF BLISTERING
DEGREE OF RUSTING
ELECTRODE POTENTIAL
LITHIUM SILICATE
MICROZINC
NANOZINC
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The aim of this study was to develop environmentally friendly, nano-structured inorganic coatings suitable for the protection of metal substrates. The formulation variables included (i) two binders based on lithium silicate of 7.5/1.0 silica/alkali molar ratio (one of them a commercial colloidal solution, and the other a laboratory-prepared nanosolution), (ii) eight pigment compositions based on two spherical microzinc alone (D 50/50 4 and 8 μm) and mixed with spherical nanozinc in three microzinc/nanozinc (w/w) ratios (90/10, 80/20 and 70/30) and finally (iii) six values of pigment volume concentration, PVC (from 47.5 to 70.0%). The electrode potentials were measured in sodium chloride solution at 25 °C and pH 7.0 during 70 days to establish the evolution of cathodic protection; in addition, panels were exposed in salt spray (fog) chamber to determine the degree of rusting and in 100% relative humidity to evaluate the blistering resistance. It was concluded that the variables alkaline silicate type, pigment composition and PVC values exhibited an important influence on the anticorrosive efficiency; very good performance was achieved with the nano-structured inorganic binder (7.5/1.0 SiO 2/Li 2O molar ratio) and the fine spherical microzinc (D 50/50 4 μm) modified with nanozinc (similar efficiency for 80/20 and 70/30 microzinc/nanozinc, w/w, ratios), in a wide range of PVC values (from 52.5 to 65.0% and from 47.5 to 60.0%, respectively).
Fil: Canosa, Guadalupe. Universidad Tecnologica Nacional. Facultad Regional La Plata; Argentina
Fil: Alfieri, Paula Vanesa. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
Fil: Giudice, Carlos Alberto. Universidad Tecnologica Nacional. Facultad Regional La Plata; Argentina
description The aim of this study was to develop environmentally friendly, nano-structured inorganic coatings suitable for the protection of metal substrates. The formulation variables included (i) two binders based on lithium silicate of 7.5/1.0 silica/alkali molar ratio (one of them a commercial colloidal solution, and the other a laboratory-prepared nanosolution), (ii) eight pigment compositions based on two spherical microzinc alone (D 50/50 4 and 8 μm) and mixed with spherical nanozinc in three microzinc/nanozinc (w/w) ratios (90/10, 80/20 and 70/30) and finally (iii) six values of pigment volume concentration, PVC (from 47.5 to 70.0%). The electrode potentials were measured in sodium chloride solution at 25 °C and pH 7.0 during 70 days to establish the evolution of cathodic protection; in addition, panels were exposed in salt spray (fog) chamber to determine the degree of rusting and in 100% relative humidity to evaluate the blistering resistance. It was concluded that the variables alkaline silicate type, pigment composition and PVC values exhibited an important influence on the anticorrosive efficiency; very good performance was achieved with the nano-structured inorganic binder (7.5/1.0 SiO 2/Li 2O molar ratio) and the fine spherical microzinc (D 50/50 4 μm) modified with nanozinc (similar efficiency for 80/20 and 70/30 microzinc/nanozinc, w/w, ratios), in a wide range of PVC values (from 52.5 to 65.0% and from 47.5 to 60.0%, respectively).
publishDate 2012
dc.date.none.fl_str_mv 2012-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/93914
Canosa, Guadalupe; Alfieri, Paula Vanesa; Giudice, Carlos Alberto; Environmentally friendly, nano lithium silicate anticorrosive coatings; Elsevier Science Sa; Progress in Organic Coatings; 73; 2-3; 2-2012; 178-185
0300-9440
CONICET Digital
CONICET
url http://hdl.handle.net/11336/93914
identifier_str_mv Canosa, Guadalupe; Alfieri, Paula Vanesa; Giudice, Carlos Alberto; Environmentally friendly, nano lithium silicate anticorrosive coatings; Elsevier Science Sa; Progress in Organic Coatings; 73; 2-3; 2-2012; 178-185
0300-9440
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0300944011003146
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.porgcoat.2011.10.013
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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