[article]
| Titre : |
Zero VOC sunlight curable coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Huilei Zhang, Auteur ; John L. Massingill, Auteur ; J. T. K. Woo, Auteur |
| Année de publication : |
2000 |
| Article en page(s) : |
p. 77-79 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Tags : |
Matériau revêtement Peinture photodurcissable Epoxyde résine Durcissement Rayonnement UV Lumière solaire Etude expérimentale |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Curing of one-pack epoxy coatings by exposure to visible light for a few hours would be a useful innovation for architectural, industrial, and maintenance (AIM) coatings as well as for any large objects that would be difficult to heat but easy to shine a light on. Zero VOC, low viscosity, sunlight curable clearcoats can be formulated with cycloaliphatic epoxy compounds as well as aromatio glycidyl ethers. Cure is achieved with a cationic photoinitiator that generates a strong acid when exposed to sunlight for a couple of hours. The clearcoats had good hardness, adhesion, and solvent resistance. No cure was achieved with incandescent light or with fluorescent light, which contains only 0.1% UV light as compared to sunlight that has 5% UV light. This work indicates that zero VOC one pack clearcoat epoxy formulations for AIM applications and large objects could be cured by light racks that generate the spectrum of sunlight. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5819 |
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 72, N° 903 (04/2000) . - p. 77-79
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