[article]
| Titre : |
Novel zero-VOC deaerators for waterborne |
| Type de document : |
texte imprimé |
| Auteurs : |
C. J. Reader, Auteur ; C. Hegedus, Auteur ; K. T. G. Lai, Auteur ; C. Louis, Auteur ; S. El Ajaji, Auteur ; W. Chaigneau, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 22-28 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Débullants
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Microfoam is a major problem for formulators of low-VOC waterborne coatings. The presence of tiny, trapped air bubbles in a coatings film leads to haze and lower gloss, and can also affect coating rheology during application. The method of application. The method of application, such as roller, brush, or airless or air-assisted spray, has a significant influence on the severity and persistence of the foam developed. To eliminate such problems, deaerators or defoamers are requird as part of the formulation.
Deaerators can be either compatible (such as molecular defoamers) or incompatible (oil or siloxane-based) in composition. This article explores how these compositional and structural parameters can be controlled to "dial-in" deaerator effectiveness and compatibility. The article also introduces new, zero-VOC deaerators designed to eliminate both macrofoam and microfoam without generating surface defects, so formulators can improve the coating performance on different substrates. |
| Note de contenu : |
- Foam theory
- Deaeration and defoaming mechanisms
- Wood furniture clearcoat
- Metal topcoat
- Waterborne epoxy clearcoat |
| En ligne : |
https://drive.google.com/file/d/1oqBSnXFUKOK_Zwi2s3h5z0iDyaxKFwdy/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17431 |
in COATINGS TECH > Vol. 10, N° 1 (01/2013) . - p. 22-28
[article]
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