| Titre : |
Stabilization of zinc pigments in aqueous alkaline media by paint resins |
| Type de document : |
texte imprimé |
| Auteurs : |
Bodo Müller, Auteur |
| Année de publication : |
1996 |
| Article en page(s) : |
p. 51-53 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Tags : |
'Peinture anticorrosion' 'Pigment métallique' Zinc 'Structure lamellaire' 'Poudre eau' Liant Interaction |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Zinc pigments react in alkaline aqueous media for the evolution of hydrogen. Paint resins inhibit this corrosion reaction at pH value of 8 better than at pH = 10. The examined alkyd resins, phenolic resins, acrylic resin, and one epoxy ester resin are good corrosion inhibitors for the lamellar leafing zinc pigment. The rate of the corrosion reaction is influenced by the specific surface area of the zinc pigments ; with a lamellar leafing zinc pigment (specific surface about 8 m2/g) more hydrogen is evolved than from spherical zinc dust (specific surface about 0.25 m2/g). Addition of one epoxy ester resin almost stabilizes aqueous alkaline dispersions of zinc dust. The paint resins examined in this study are commercial products used for different types of paints. It should be possible to synthesize paint resins (e.g., epoxy esters) with improved properties tailor-made for waterborne anticorrosive paints with zinc pigments. |
| Note de contenu : |
- EXPERIMENTAL : Lamellar leafing zinc pigment - Zinc dust
- RESULTS AND DISCUSSION : Lamellar leafing zinc pigment - Zinc dust |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18480 |
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 863 (12/1996) . - p. 51-53
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Stabilization of zinc pigments in aqueous alkaline media by paint resins in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 863 (12/1996)
