[article]
| Titre : |
Grey UV-curable powder coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Zeljko Jovanovic, Auteur ; Jules Lahaye, Auteur ; Hugh Laver, Auteur ; Sonia Megert, Auteur ; Conny Te Walvaart, Auteur |
| Année de publication : |
2000 |
| Article en page(s) : |
p. 16-24 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Much has been published on the formulation of UV-curable powder coatings, nevertheless, some colours such as yellows and greys, remain difficult to cure. In greys, titanium dioxide and a black pigment together reduce the amount of UV and blue light, respectively, that is available for the α-hydroxy ketone and bis-acyl phosphine oxide photoinitiators. However, by careful selection of the black pigment and avoidance of excessive covering power, good cure performance can be achieved. |
| Note de contenu : |
- A wide processing window
- Diffuse transmittance determines through-curing
- BAPO/AHK-photoinitiator mixture beneficial
- Yellows and greys are difficult to cure
- Experimental procedure
- Formulation mixtures : black cures better than white
- Curing improves with increasing BAPO concentration
- Varying the type of black pigment changes curing performance
- Better curing at higher UV-dosages with Ga-doped lamps
- Covering power vs. curing performance |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11045 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10/00 (10/2000) . - p. 16-24
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