| Titre : |
Challenging the performance myth of inorganic zinc silicates |
| Type de document : |
texte imprimé |
| Auteurs : |
Oriol Osso, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 39-40 |
| Langues : |
Anglais (eng) |
| Catégories : |
Adhésion
Anticorrosifs
Anticorrosion
Microsphères
Primaire (revêtement)
Revêtements -- Propriétés mécaniques
Verre
Zinc
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Researchers at Hempel have developed an innovative, organic zinc-rich primer coating technology called Avantguard. It uses a combination of zinc, hollow glass spheres and a proprietary activator to provide superior cathodic protection (CP) with greatly improved mechanical properties (crack resistance) and adhesion. This technology activates the zinc so that it can be fully utilised to act as an anode.
The use of glass spheres enhances coating adhesion and mechanical properties. The unique corrosion by product of the activated zinc has a self-healing effect on the coating. The glass spheres block micro-cracks and also create an inhibitor effect by collecting insoluble corrosion products on their surfaces and trapping these species so they don't reach the surface of the steel. |
| Note de contenu : |
- Organic vs inorganic zinc rich primers
- Hempel's avantguard technology
- The new Hempadur Avantguard 860
- Fig. 1. SEM images show the self-healing characteristic of the activated zinc-rich epoxy primer
- Fig. 2. An SEM image of the activated zinc-rich primer cross section shows glass spheres blocking a micro-crack
- Fig. 3. EDS results show zinc salts around a glass sphere and the presence of chlorine atoms in the zinc salts
- Fig. 3. |
| En ligne : |
https://drive.google.com/file/d/1B1oDKlbF4BeA7vFiR-uoDpiLxXd1K9DT/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30538 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4639 (03/2018) . - p. 39-40
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