Accueil
Résultat de la recherche
2 résultat(s) recherche sur le tag 'salin'
Ajouter le résultat dans votre panier Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche
Advanced testing procedures for high performance coatings / Flavio Deflorian in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 72, N° 908 (09/2000)
[article]
Titre : Advanced testing procedures for high performance coatings Type de document : texte imprimé Auteurs : Flavio Deflorian, Auteur ; Stefano Rossi, Auteur ; Pier Luigi Bonora, Auteur Année de publication : 2000 Article en page(s) : p. 81-87 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture anticorrosion Industrie automobile Protection corrosion Essai brouillard salin Impédance électrique Méthode électrochimique Etude comparative expérimentale Spectrométrie impédance Index. décimale : 667.9 Revêtements et enduits Résumé : In the first part of this work, an integrated approach incorporating electrochemical (electrochemical impedance spectroscopy), calorimetric (differential scanning calorimetry), mechanical (dynamic mechanical thermal analysis), and infrared spectroscopy (Fourier transform infrared spectroscopy) techniques was used to characterize some organic coatings from the automotive industry. Comparison of the results obtained with different techniques allows not only a higher precision in the evaluation of natural or artificial degradation, which is very difficult to obtain using traditional techniques, but also better data interpretation and, therefore, the possibility of understanding the different degradation mechanisms. In the second part, some preliminary results concerning the comparison of salt spray exposure and EIS measurements are discussed. The statistical analysis of the results showed that the degradation mechanism in the two cases is completely different and, therefore, the information which is obtained with the two testing approaches is also different. With EIS measurements obtained in immersion, it is possible to monitor, in particular, the barrier properties of the coatings, which are dominated by the presence of defects. In the case of salt spray (without scratch), the main property to be measured is the loss of adhesion which causes blister formation. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5790
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 72, N° 908 (09/2000) . - p. 81-87[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001213 - 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]
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
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 913 (02/2001) . - p. 99-106[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001221 - Périodique Bibliothèque principale Documentaires Disponible