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Critical pigment volume concentration measurements... A very fast method / Walter K. Asbeck in COATINGS TECH, Vol. 2, N° 14 (03/2005)
[article]
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
MesureIndex. 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 methodsEn ligne : https://drive.google.com/file/d/1ethbd5ntriuH4C-_Xst2Dzty3DMeEpGt/view?usp=drive [...] Format de la ressource électronique : 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[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000554 - Périodique Bibliothèque principale Documentaires Disponible A retrospective view of coatings adhesion testing / Walter K. Asbeck in COATINGS TECH, Vol. 2, N° 12 (01/2005)
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Titre : A retrospective view of coatings adhesion testing Type de document : texte imprimé Auteurs : Walter K. Asbeck, Auteur Année de publication : 2005 Article en page(s) : p. 48-55 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Essais d'adhésion
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : A large number of short-term destructive laboratory tests have been devised to access the adhesion of coatings to various substrates. Some questions arise about the ability of such tests to predict adhesion over extended periods of time. These tests are reviewed and their advantages and shortcomings are examined.
An alternative useful test has been generally available. It is invariably correct in predicting the adhesion of coatings over extended periods of time. It has had no name but Normal Service Life Adhesion (NoSLA) is suggested.Note de contenu : - Knife-cutting tests
- Peel test
- Other test methods
- RESUTLS : Examples of the Normal Service Life Adhesion (NoSLA) test - The occasional service life adhesion testEn ligne : https://drive.google.com/file/d/1rrW9DowMlVZWkDuisc5pCAEKZCuBB-xJ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40684
in COATINGS TECH > Vol. 2, N° 12 (01/2005) . - p. 48-55[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000583 - Périodique Bibliothèque principale Documentaires Disponible