| Titre : |
Synthesis and incorporation of poly(methyl methacrylate) microspheres with UV stabilizers in wood clear coating binder |
| Type de document : |
texte imprimé |
| Auteurs : |
Caroline Queant, Auteur ; Véronic Landry, Auteur ; Pierre Blanchet, Auteur ; Diane Schorr, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 1411-1422 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Absorbeurs de rayonnement ultraviolet
Bois -- Revêtements
Encapsulation
Essais accélérés (technologie)
Liants
Microsphères
Polyacryliques
Polyméthacrylate de méthyleLe poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec.
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The durability of clear coatings is an important problem in the coatings industry. This problem can be partly solved with the addition of UV absorbers (UVAs) in the coating formulation. UVAs can absorb part of the UV radiation and convert it into harmless heat. Organic UVAs are prone to photodegradation and can migrate in the binder of a coating formulation. In this study, commercial UVAs have been encapsulated in poly(methyl methacrylate) microspheres using the internal phase separation method. Microspheres have been incorporated into a clear acrylic binder. The acrylic was then applied on wood panels and was placed into an artificial UV chamber. Efficiency of coatings after aging as well as chemical and physical properties were monitored using a colorimeter, FTIR spectroscopy and transmission electron microscopy. This study presents a comparison between the efficiency of free and encapsulated Tinuvin 1130 and 292 commercial absorbers. Results have shown that the coating efficiency is slightly improved when using the encapsulated products. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Synthesis of PMMA microspheres with Tinuvin 1130 and Tinuvin 292 - Characterization techniques - Introduction in a commercial binder - Accelerated aging tests - Colorimeter - Film absorbance - FTIR - Diffusion tests
- RESULTS AND DISCUSSION : DLS and microscopy - Accelerated aging tests results - Film absorbance - FTIR results - Diffusion tests |
| DOI : |
10.1007/s11998-017-9943-4 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9943-4.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29653 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 6 (11/2017) . - p. 1411-1422
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