| Titre : |
The particle size effect of MALPB-DEA dispersions on their anticorrosion performances as waterborne coatings on galvanized sheet |
| Type de document : |
texte imprimé |
| Auteurs : |
Jinwei Wang, Auteur ; Jinwei Tang, Auteur ; Yedong He, Auteur |
| Année de publication : |
2011 |
| Article en page(s) : |
p. 11-17 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anhydride maléique
Anticorrosifs
Anticorrosion
Diéthanolamine
Dispersions et suspensions
Galvanisation
Polybutadiène
Polymères en émulsion
Revêtements en phase aqueuse:Peinture en phase aqueuse
Taille des particules
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Maleic anhydride-g-liquid polybutadiene (MALPB) dispersions were prepared by chemical modification with diethanolamine (DEA) during direct polymer emulsification, and their anticorrosion performances on galvanized sheet were found to be strongly dependent on their particle size and distribution with the variation of DEA. The dispersion containing DEA to maleic anhydride at molar ratio of 2:1 exhibited much smaller particle size and narrower size distribution than that containing DEA to maleic anhydride at molar ratio of 1:1, as measured by a laser diffraction particle size analyzer. A more compact organic layer was supposed to be formed by the dispersion composed of smaller size and narrower size distribution particles on the galvanized sheet, which exhibited better anticorrosive properties. This compact layer slowed down the electrolyte penetration onto the metal surface such that the life span of the metal could be prolonged, which was reflected in the increase in corrosion potential as measured by DC polarization, higher impedance during immersion in 3.5 wt% NaCl solution as measured by electrochemical impedance spectroscopy (EIS), and improved durability in harsh environment as observed by images after salt spray tests. |
| Note de contenu : |
EXPERIMENTAL : Materials - Preparation of the coatings - Film formation and the curing process - Characterizations.
RESULTS AND DISCUSSION : Particle size and distributions of the dispersions - Electrochemical impedance spectroscopy (EIS) - Salt spray test. |
| DOI : |
10.1007/s11998-010-9268-z |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9268-z.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10918 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 1 (01/2011) . - p. 11-17
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The particle size effect of MALPB-DEA dispersions on their anticorrosion performances as waterborne coatings on galvanized sheet in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 1 (01/2011)
