| Titre : |
How to speed up the UV curing of water-based acrylic coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
C. Decker, Auteur ; Reinhold Schwalm, Auteur ; F. Masson, Auteur |
| Année de publication : |
2004 |
| Article en page(s) : |
p. 127-136 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cinétique chimique
Copolymère uréthane acrylate
Photoamorceurs (chimie)
Revêtements -- Séchage sous rayonnement électronique
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements en phase aqueuse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Water-based polyurethane-acrylate (PUA) coatings have been cured, after drying, by a short exposure to UV radiation in the presence of a radical-type photoinitiator. The light induced polymerization has been followed quantitatively by means of real-time infrared spectroscopy, by monitoring continuously the disappearance of the acrylate double bonds. The UV curing of the dry film was markedly accelerated by adding to the PUA formulation a reactive plasticizer (diacrylate monomer), by operating in a humid atmosphere or by raising the temperature. The neutralizer of the carboxylic groups, needed to get a stable dispersion, plays a key role in both the polymerization kinetics and in the hydrophilic character of the UV-cured polymer, the best performance being achieved by using a volatile tertiary amine. Water-based UV-cured PUA coatings combine hardness and flexibility and are, therefore, quite resistant to abrasion and scratching. |
| DOI : |
10.1007/s11998-004-0007-1 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-004-0007-1.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3958 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 1, N° 2 (04/2004) . - p. 127-136
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How to speed up the UV curing of water-based acrylic coatings in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 2 (04/2004)
