Evaluation of steel/primer based on chestnut tannin/paint film systems by EIS / S. Hornus Sack in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 74, N° 926 (03/2002)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 74, N° 926 (03/2002) . - p. 63-69 Titre : Evaluation of steel/primer based on chestnut tannin/paint film systems by EIS Type de document : texte imprimé Auteurs : S. Hornus Sack, Auteur ; R. Romagnoli, Auteur ; V. F. Vetere, Auteur ; C. I. Elsner, Auteur ; O. Pardini, Auteur ; Javier I. Amalvy, Auteur ; A. R. di Sarli, Auteur Année de publication : 2002 Article en page(s) : p. 63-69 Note générale : Bibliogr. Langues : Américain (ame) Tags : Spectrométrie  impédance  Etude  expérimentale  Perméabilité  eau  Absorption  Propriété  physique  Impédance  électrique  Feuil  Tanin  Préparation  surface  Alkyde  résine  Protection  corrosion  Acier  Peinture  primaire  anticorrosion  Matériau  revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : The influence of a tannin pretreatment applied to slightly rusted steel panels on the anticorrosive verformance of alkyd paint systems has been investigated using electrochemical impedance spectroscopy (EIS) and open circuit potential measurements. From EIS and corrosion potential data analysis it was found that (1) there is not a significant influence of the tannin pretreatment on the anticorrosive protection level, which depends particularly on the barrier effect afforded by the applied paint system (however, as the corrosion process starts, tannins may cause the repassivation of steel); (2) the enhancement of the protection level afforded by the tannin primer was restricted to short immersion periods and corrosive media that were not very aggressive; and (3) water uptake was not significantly affected by the presence of the tannin primer. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5673 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
001236	-	Périodique	Bibliothèque principale	Documentaires	Disponible
001237	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Formulation and testing of a waterborne primer containing chestnut tannin / O. Pardini in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 913 (02/2001)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 913 (02/2001) . - p. 99-106 Titre : Formulation and testing of a waterborne primer containing chestnut tannin Type de document : texte imprimé Auteurs : O. Pardini, Auteur ; Javier I. Amalvy, Auteur ; A. R. di Sarli, Auteur ; R. Romagnoli, Auteur ; V. F. Vetere, Auteur Année de publication : 2001 Article en page(s) : p. 99-106 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau  revêtement  Peinture  eau  émulsion  anticorrosion  primaire  réactive  Formulation  Inhibiteur  corrosion  Tanin  Phosphorique  acide  Acier  Essai  brouillard  salin  vieillissement  accéléré  Protection  Etude  expérimentale  Acrylique  dérivé  polymère Index. décimale : 667.9 Revêtements et enduits Résumé : The development of a water-based pretreatment system containing chestnut tannin and phosphoric acid and the assessment of its anticorrosive properties through different conventional tests are discussed in this work. Treated steel panels coated with different paint systems were subjected to standardized (salt spray, humidity chamber, adhesion, and flexibility) and electrochemical (corrosion potential, EIS) tests. Electrochemical tests were performed by employing only panels coated with the wash primer to determine its protective effect. The binder employed in this research was prepared in the laboratory by emulsion polymerization of acrylic monomers. It was found that the tested formulation protected steel against corrosion by forming ferric tannate, which prevented oxide formation. After performing the salt spray tests, it was observed that no oxide spots developed on the scratch mark although some blisters were detected. The good stability of the binder in low pH media (pH: 2.0-2.5) and the binder/substrate interaction are decisive factors in the performance of this aqueous pretreatment system. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5691 [article]

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