| Titre : |
Cutting creep : Alloyed zinc powders to reduce the rust creep in high performance anti-corrosion coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Pascal Verbiest, Auteur ; Lars Thorslund Pedersen, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 9-14 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Anticorrosifs
Anticorrosion
Epoxydes
Essais (technologie)
Revêtements poudre:Peinture poudre
Structures offshore -- Revêtements protecteurs
Zinc
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Zinc rich primers, both organic and inorganic types, are extensively used in the marine and the offshore industry. The beneficial effect of zinc-rich primers is attributed to their cathodic protection mechanism.
During the 60s and the 70s zinc rich epoxy primers dominated the market. Later, zinc ethyl silicate primers took over thris role but nowadays zinc epoxy primers have made a comback.
Some of the advantages of zinc epoxies compared to zinc silicates are the less demanding curing conditions (epoxies will cure faster and they are not dependent on high humidity), their easiness to overcoat (the porosity of silicates may cause popping) and their less demanding substrates preparation (Sa 2 1/2 as compared to Sa 3 for zinc silicates) prior to application. This makes the zinc epoxy primers very attractive for maintenance for building applications where surface preparation requirements cannot be met, where applicators are less skilled and/or where climate control during application does onts favour zinc-silicates. The increasing demands for the performance zinc riche primers (low rust creep) have generated an even higher need to maximize the benefit of the zinc powder in the paint and to optimise the rust creep resistance. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13623 |
in PROTECTIVE COATINGS EUROPE (PCE) > Vol. 4, N° 1 (01-02-03/2012) . - p. 9-14
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Cutting creep in PROTECTIVE COATINGS EUROPE (PCE), Vol. 4, N° 1 (01-02-03/2012)
