Titre : |
Influence of coating formulation variables and processing on the adhesion of melamine - crosslinked polyester primer to urethane - crosslinked epoxy electrocoat |
Type de document : |
texte imprimé |
Auteurs : |
Larry P. Haack, Auteur ; Joseph W. Holubka, Auteur |
Année de publication : |
2000 |
Article en page(s) : |
p. 61-65 |
Note générale : |
Bibliogr. |
Langues : |
Américain (ame) |
Index. décimale : |
667.9 Revêtements et enduits |
Résumé : |
The role of spray-primer formulation chemistry towards robustness of adhesion to an epoxy-based electrocoat was examined for a range of coatings representative of those used in automotive OEM applications. For coatings exhibiting degraded adhesion performance, high-resolution X-ray photoelectron spectroscopy (XPS) identified the presence of a surface-active polyether-based anti-cratering agent (ACA) formulated into the epoxy-based electrocoat at the primer/electrocoat interface. The adhesion performance of the better-performing systems was found to be related to the spray-primer’s ability to accommodate the ACA by either absorbing or displacing it from the electrocoat surface, thus diluting it to concentrations no longer adversely affecting adhesion. |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5802 |
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 72, N° 905 (06/2000) . - p. 61-65