Titre : |
Keeping distance : Dispersing under vacuum expansion creates paints and lacquers with high colour strength. Less titanium dioxide is necessary because of more efficient dispersion by the new technology |
Type de document : |
texte imprimé |
Auteurs : |
Hans Joachim Jacob, Auteur |
Année de publication : |
2019 |
Article en page(s) : |
p. 138-143 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Catégories : |
Couleur Dioxyde de titane Dispersions et suspensions Granulométrie Opacité (optique) Revêtements:Peinture
|
Index. décimale : |
667.9 Revêtements et enduits |
Résumé : |
Titanium dioxide (TiO2) is one of the main cost drivers when producing paints and lacquers. Currently around seven milliontonnes of TiO2 are produced per year. The global market price per ton has increased by around 50 percent on average over the last few years - for high qualities it almost doubled. A new technology combines in-line dispersing technology together with a vaccum expansion method in order to use TiO2 more efficiently. |
Note de contenu : |
- Right distance
- Correct dispersion
- More air than expected
- Manufacturing tinting pastes (colourants)
- Incorporate fillers
- Hiding power and colour strength
- TiO3 slurry and intermediates
- Fig. 1 : Agglomerated TiO2 particles prevent the light scattering capacity
- Fig. 2 : Principal structure ; liquide and power inlet ; dispersing zone an dproduct outlet
- Fig. 3 : Principal structure ; lquid and power inlet ; dispersing zone an product outlet
- Fig. 4 : Process steps for titanium dioxide optimised dispersin in wall paint production
- Fig. 5 : Vacuum-expansion ; separating the particles on the way to the dispersion zone
- Fig. 6 : Particle size distribution with too little dispersing additive ; particle size increases during dispersion
- Fig. 7 : Particle size distribution with adjusted dispersing additive quantity and optimised feeding
- Fig. 8 : Dispersing titanium dioxide with larger filler particles results in crowding and reduces the effect of th etitanium dioxide
- Fig. 9 : Identical colour strength with 8% less titanium dioxide
- Fig. 10 : Higher hiding power with 8% less titanium dioxide |
En ligne : |
https://drive.google.com/file/d/1av1tuRZ1KIpFkPCFEV8O-jbfYi-0rvbl/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32028 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 3 (03/2019) . - p. 138-143