Titre : |
Tio2 efficiency in coatings : products and techniques for opacity optimisation |
Type de document : |
texte imprimé |
Auteurs : |
Paul Dietz, Auteur |
Année de publication : |
2016 |
Article en page(s) : |
p. 91-96 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Catégories : |
Dioxyde de titane Opacité (optique)
|
Index. décimale : |
667.9 Revêtements et enduits |
Résumé : |
For those who have been in the coatings industry long enough, the rollercoaster ride of TiO2 price comes as no surprise. That said, the day of an even 10-year cycle in price have changed to shorter periods of high price (often painfully high) followed by longer periods of relatively low price (painfull for the suppliers). Even when relatively "cheap", TiO2 continues to be one of the most expensive raw materials in a coating, so ensuring that the pigment is used correctly and efficiently remains a crucial busines objective. |
Note de contenu : |
- TiO2 SELECTION
- PIGMENT DISPERSION : Solvent systems - Water-based systems - The role of pH and surface charge - Dispersants and dispersant requirements - Physical dispersion
- COST-EFFECTIVE OPACITY
- ENGINEERED COMPOSITE TECHNOLOGY - FP-PIGMENTS' OPACITY PIGMENT
- TABLES : 1. Points to consider when choosing your TiO2 - 2. Means of achieving cost-effective opacity in coatings
- FIGURES : 1. Relative undertone of TiO2 pigments due to pigment crystal size - 2. Example of a mobility curve for an alumin/zirconia treated TiO2 pigment - 3. Effect of pH on dispersion - 4. Dispersant demand curves for anionic and steric stabilisers - 5. Dispersant demand determination for two dispersants - 6. Dispermat dissolver used at FP-pigments - 7. Pigment flocculation due to soluble salt concentration - 8. Pigment flocculation and crowding upon drying - 9. Schematic of pigment crowding by extenders - 10. SEM ans schematic representation of FP-pigments' opacity pigment - 11. Typical performance of the FP-460 opacity pigment in a German DIY matt paint - 12. Comparison of loose blend with composite product - 13. Reduction of the "window" effect when using FP-pigment's composite compared to comparable sized extender - 14. Use of both a functional extender and FP-pigments opacity pigment to reduce TiO2 and improve formulation costs |
En ligne : |
https://drive.google.com/file/d/1ixyZYQh7Yy5_9OsyAlI1_BxkRygKWGRP/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26189 |
in SURFACE COATINGS INTERNATIONAL > Vol. 99.2 (04-05/2016) . - p. 91-96