| Titre : |
A model of the infrared cure of powder coatings based on surface absorptivities in-situ measurements |
| Type de document : |
texte imprimé |
| Auteurs : |
Isabelle Bombard, Auteur ; Gérard Jeandel, Auteur ; Joseph Lieto, Auteur ; Pierre Laurent, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 353-363 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Mesure
Peinture poudre -- Séchage sous rayonnement infrarouge
Réflectance
Revêtements poudre:Peinture poudre
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The efficiency of radiative powder coatings curing depends both on the coating radiative properties and the spectral emissivities of the infrared emitters. This investigation is structured to develop a mathematical model using the radiative properties of the coating to describe precisely the coating temperature and deduce the degree of polymerization conversion during the cure. The reflectance measurements results obtained with a FTIR equipped with an integrating sphere are analyzed and implemented in a thermal model. These results show that reflectance values vary with the chemical composition, the pigment nature, and are influenced by the powder coatings cure. The thermal model, solved with the finite volume method, permits to compute the varying temperature within the thickness of the powder-coated metal sample and provides a good prediction of the temperature within the “coating + substrate” system. The experimental cure of powder coatings supporting this study was performed in a small test oven equipped with electrical infrared emitters. |
| DOI : |
10.1007/s11998-007-9075-3 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9075-3.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2979 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 3 (09/2008) . - p. 353-363
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