| Titre : |
TiO2 scattering optimization and not-in-kind opacity alternatives |
| Type de document : |
texte imprimé |
| Auteurs : |
Michael P. Diebold, Auteur ; R. A. Kwoka, Auteur ; David M. Mukoda, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 30-35 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Dioxyde de titane
Lumière -- Diffusion
Opacifiants
Polymères -- Propriétés optiques
Polymères opaques
Revêtements
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
With titanium dioxide (TiO2) in short supply, many coatings manufacturers are re-evaluating their paint formulas to optimize TiO2 effectiveness and/or incorporate not-in-kind alternative options for opacity. Applying optical theory to practical paint making leads us to the following conclusions, which will be explored more thoroughly in this article :
1. Incorporating air voids into a coating, either by formulating above critical pigment volume concentration or by using hollow sphere opaque polymers, can provide good dry film optical performance at reduced TiO2 loadings, but the use of air voids constrained by other coating performance parameters.
2. Replacing large extender particles with small extender particles can improve TiO2 light scattering efficiency, allowing some reduction in TiO2 loadings, but this is not likely a result of the smaller extenders preferentially "spacing" the TiO2 particles.
3. Targeted spacing technologies, like the use of highly coated TiO2 products, can improve TiO2 efficiency, allowing a reduction in TiO2 pigment loading in appropriate coating formulations. |
| Note de contenu : |
- Formulating above critical pigment volume concentration
- Hollow sphere opaque polymers
- Mineral fillers
- Highly coated TiO2 grades |
| En ligne : |
https://drive.google.com/file/d/1uvcIxQ0eaDLfz25ixO0deD0t-XGEAvwQ/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17576 |
in COATINGS TECH > Vol. 10, N° 2 (02/2013) . - p. 30-35
Aller sur edunet
Accueil
TiO2 scattering optimization and not-in-kind opacity alternatives in COATINGS TECH, Vol. 10, N° 2 (02/2013)
