| Titre : |
Critical pigment volume concentration measurements... A very fast method |
| Type de document : |
texte imprimé |
| Auteurs : |
Walter K. Asbeck, Auteur |
| Année de publication : |
2005 |
| Article en page(s) : |
p. 64-66 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Chimie analytique
Concentration pigmentaire volumique critique
Mesure
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Because of the importance of knowing the Critical Pigment Volume Concentration (CPVC) for maximum performance of ail pig¬mented coating systems, a large number of methods to measure CPVC have been proposed. All at¬tempts to predict the critical point on theoretical grounds have been unsuccessful. Some tests for CPVC are quite accurate and reliable in showing where the break in the for¬mulating ladder exists. Some re¬quire considerable judgment.
All tests for CPVC, unfortunately, require the preparation of the coat¬ing compositions, induding pig¬ments used, vehicles (both solution and latex type), and their grinds. The composition must then be de¬posited on some substrate and dried—either by air or bake—before the classical tests can be used. All facets of the coatings manufacture must be induded in the test sam¬pies. The required sample may be produced relatively fast in the case of baked systems or very slow in the case of some air-dried systems.
Ail of the classical tests made on these PVC ladders are relatively time consuming and total testing time may require many hours. A new method of testing on the PVC ladder, which is both veryfast and requires minimal instrumentaion, is proposed here. For the most part, the tests on each sample can be made in less than one minute.
|
| Note de contenu : |
- Critical Pigment Volume Concentration measurements - A very fast method
- A new test method
- Table 1 : Possible test methods |
| En ligne : |
https://drive.google.com/file/d/1ethbd5ntriuH4C-_Xst2Dzty3DMeEpGt/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40683 |
in COATINGS TECH > Vol. 2, N° 14 (03/2005) . - p. 64-66
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Critical pigment volume concentration measurements... A very fast method in COATINGS TECH, Vol. 2, N° 14 (03/2005)
