| Titre : |
Critical Pigment Volume Concentration (CPVC) |
| Type de document : |
texte imprimé |
| Auteurs : |
M. Veeramani, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 88-92 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Concentration pigmentaire volumique critique
Dioxyde de titane
Opacifiants
Revêtements en phase aqueuse:Peinture en phase aqueuse
|
| Index. décimale : |
667.6 Peintures |
| Résumé : |
During the last fifty years, different methods were proposed to determine CPVC, many of which based on the change of coating properties (for example film density). In practice, the following two methods are the most used : the Gilsonite method and the film tension test. The Gilsonite method is based on the ability to stain the coating using a 10% solution of Gilsonite (trade name of natural bitumen) in white spirit. With the PVC value increasing, the intensity of the stain increases, obtained by soaking the paint test tube in the Gilsonite solution. The higher the PVC value, the higher the stain intensity. Visibly CPVC matches PVC at the point in which the soaked area has the same colour as the non-soaked one. As an alternative, the film tension test is based on the tension produced in a paint film during the solvent evaporation. This tension causes a shrinkage in the film which wilI be greater or smal ler based on the hardness of the binder, and wiII be greatest when PVC matches CPVC. |
| Note de contenu : |
- Factors influencing CPVC
- How do pigments generate hiding power ?
- Efficiency of various white powders at scattering light
- Titanium dioxide and hiding power
- Why are some pigments better than others in hiding power ?
- Table : Experimental data of oil and water absorption values |
| En ligne : |
https://drive.google.com/file/d/1-gHy5lKBgRePZhoEMS-GfC-iXwB1WDw_/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34689 |
in PAINTINDIA > Vol. LXX, N° 2 (02/2020) . - p. 88-92
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Critical Pigment Volume Concentration (CPVC) in PAINTINDIA, Vol. LXX, N° 2 (02/2020)
