Titre : |
Comparative studies of acrylic latex paint (Part 1) |
Type de document : |
texte imprimé |
Auteurs : |
Roland Baumstark, Auteur ; Carlos Costa, Auteur ; Manfred Schwartz, Auteur |
Année de publication : |
1999 |
Article en page(s) : |
p. 44-48 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Catégories : |
Copolymère styrène acrylique Décoloration Latex Liants Photostabilité Polyacryliques Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques Revêtements organiques
|
Index. décimale : |
667.9 Revêtements et enduits |
Résumé : |
Latex paints formulated with two typical commercial acrylic dispersion binders - one a pure acrylic (Ak), the other an acrylic/styrene (Ak/S) were investigated. This included determination of the films mechanical properties, colour change (when subjected to artificial weathering), resistance to water and water-vapour transmission rates. Our investigations revealed there to be little difference between the two types of polymer in the 15-55% Pigment Volume Concentration (PVC) range. As earlier work showed, an optimum PVC and the right combination of pigment and extender are more important than the type of binder. |
Note de contenu : |
- Investigation of two typical commercial acrylic dispersion binders
- Test methods and mechanical testing (tensile strength/elongation at break) on the films
- Testing discoloration
- Interaction between the pigment and binder depends on the amount of absorbed water
- The water absorption drops with the number of wash/dry cycles
- Water-vapour transmission rate decrease with PVC
- Two opposing effects influence tensile properties
- Water toughens and improves the extensibility of Ak/S paint films more than Ak paint films
- Pure acrylic paints exhibit superior light stability than acrylic/styrene ones
- Practically no yellowing
- Summary of results |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11188 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 5/99 (05/1999) . - p. 44-48