| Titre : |
Early rain resistance and surfactant leaching resistant binder |
| Type de document : |
texte imprimé |
| Auteurs : |
R. Matranga, Auteur ; B. Doran, Auteur ; Alan Fream, Auteur ; Christophe Baude, Auteur ; E. Bousseau, Auteur ; Maurille Secher, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 50-59 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésion
Applications extérieures
Essais dynamiques
Liants
Polyacryliques
Résistance à l'efflorescence
Résistance à l'exsudation
Résistance à l'humidité:Résistance à l'eau
Résistance à la fissuration
Résistance chimique
Revêtement mural:Peinture murale
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The development of an effective waterborne technology for exterior paints has become a significant challenge in the architectural coatings market due to the growing expectations of end users (total cost of ownership), diversification of materials used for exterior walls and siding, and the continuous trend towards VOC reduction. This article describes a new product based on our company's Low Exudation Binder (LEB) platform, designed for formulation of exterior paints, where pure acrylic binders are typically used for reasons of excellent color retention in very deep tones. The new binder possesses the advantages common to those of the LEB technology, namely very low surfactant leaching, excellent resistance to efflorescence, and long-term adhesion, and in addition, very early rain resistance, allowing the application window to be extended. Furthermore, paints formulated with the new binder have very low VOC emissions, and are in-line with all the most stringent, current environmental requirements. |
| Note de contenu : |
- PROBLEMS WITH WATER-BASED MASONRY COATINGS : application and drying - Resistance to early rain - Exudation or surfactant leaching/staining - Other common problems
- POLYMER DEVELOPMENT : LEB PLATFORM : Polymer design considerations - Need for pure acrylic version of LEB
- EXPERIMENTAL : TEST METHODS : The nature of exudates from water-based paints - Exudation resistance (evaluation of leaching of surfactants and water-soluble components) - Efflorescence resistance - Shower test (evaluation of resistance to early rain) - Q-UV exposure and exterior weathering - Adhesion - Resistance to mud-cracking - Crack test on wood
- RESULTS AND DISCUSSION : Analysis of exudates from water-based paints -
- APPLICATION OF PF-LEB IN EXTERIOR COATINGS
- ASSESSMENT OF LEB WHITE W2 AND LEB DEEP DE PERFORMANCE : Exudation resistance - Efflorescence resistance - Shower resistance - Accelerated durability - Adhesion - Mud-crack resistance - Crack test on wood
- Fig. 1 : Optimum application conditions
- Fig. 2 : Chromatogram of exudates from standard acrylic based facade paint and same formulation based on the PA-LEB
- Fig. 3 : Exudation resistance of white and blue tinted paints
- Fig. 4 : Efflorescence resistance on white and deep bases
- Fig. 5 : Panels with white bases before and after shower test
- Fig. 6 : Panels with deep bases before and after shower test
- Fig. 7 : Results of Q-UV exposure
- Fig. 8 : Resistance to mu-cracking
- Fig. 9 : Results of crack test on wood
- Table 1 : Typical characteristics of New PA-LEB
- Table 2 : Formulation and characteristics of LEB white W2 and LEB deep D2 for exterior flat
- Table 3 : Characteristics of exterior flat paints evaluated in the benchmarking study
- Table 4 : Adhesion to non-porous substrates |
| En ligne : |
https://drive.google.com/file/d/1HRRsX_HEcUkmNT0ZxBEUo8tc4NLrFIdt/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31271 |
in COATINGS TECH > Vol. 15, N° 8 (08/2018) . - p. 50-59
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