| Titre : |
Titanium dioxide pigment : Influence of TiO2 flocculation on the optical properties of alkyd emulsion paints |
| Type de document : |
texte imprimé |
| Auteurs : |
D. J. Rutherford, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 18-27 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
TiO2 pigment flocculation has a detrimental effect on opacity and other paint properties. It has been established that TiO2 flocculation increases as a function of alkyd emulsion particle size and mathematical modelling work has been used to compare theoretical light scattering efficiency of alkyd emulsion paints with the measured scattering coefficients. An experimental proprietary flocculation resistant grade of TiO2, which provides excellent steric stabilisation by use of a novel surface coating, has been Incorporated into alkyd emulsion paints in order to demonstrate the beneficial effect on opacity when the level of TiO2 flocculation in alkyd emulsion paints is reduced. |
| Note de contenu : |
- Steric or electrostatic repulsion stabilises TiO2 particles
- Alkyd emulsions were evaluated
- TiO2 grade has relatively little effect on opacity and gloss
- Acrylic gloss paints possess a higher level of paint flocculation
- Alkyd emulsion paints are more flocculated than solvent based paints
- Particle size of the alkyd emulsion affects pigment flocculation and opacity
- Reducing TiO2 pigment flocculation by improving spacing of TiO2 particles in alkyd emulsion paints
- Performance of pigment A in a standard alkyd emulsion with low particle size
- Performance of pigment A in an alkyd emulsion with larger particle size
- Different non-ionic surfactants have a little influence on pigment flocculation and opacity
- Refractive index of paint medium shows influence on opacity
- Opacity of commercial alkyd emulsion is lower than solvent based paints
- Flocculation gradient of alkyd emulsion are higher than solvent based paints |
| En ligne : |
https://drive.google.com/file/d/13Qt8PgsTYzOBff3T9asXNuOgRyELDMEk/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10950 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 6/01 (06/2001) . - p. 18-27
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