| Titre : |
Developing and evaluating early rain resistance in exterior architectural coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Shelby Kellogg, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 46-49 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Applications extérieures
Essais accélérés (technologie)
Essais de résilience
Formulation (Génie chimique)
Hydrophobie
Polyacryliques
Résistance à l'humidité:Résistance à l'eau
Revêtements -- Additifs
Revêtements en bâtiment
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
High humidity and precipitation challenges the ability of exterior architectural coatings to properly cure and provide the necessary protection of exterior surfaces. To increase early rain resistance and decrease water sensitivity, different formulation techniques were investigated. Raw materials were evaluated in a standard starting point formula to generate an optimal formulation that reduces water sensitivity and surfactant leaching, while simultaneously increasing early rain resistance. Results for early rain resistance were determined by developing new testing methodology that varied environmental factors during the film curing process. We determined that using functional additives as well as increasing the hydrophobicity of the coating film can substantially increase early rain resistance. |
| Note de contenu : |
- PROCEDURE DEVELOPMENT AND TESTING : Early rain resistance testing apparatus - Test method - Reproductibility
- EARLY RAIN RESISTANCE FORMULATION TECHNIQUES : Latex hydrophobicity - Formula optimization
- Fig. 1 : Early rain resistance testing apparatus
- Fig. 2 : Divited 7/12 mil gap drawdown bar
- Fig. 3 : Examples of samples positions on panels
- Fig. 4 : Contact angle of meat latex
- Fig. 5 : Formulation component importance on early rain resistance
- Fig. 6 : Comparative earl rain resistance results
- Table 1 : Exterior commercial flat paint breakthrough time in seconds
- Table 2 : Early rain resistance starting point formula with DOE component loading levels
- Table 3 : Early rain resistance optimized formula |
| En ligne : |
https://drive.google.com/file/d/1ZcaoOlprJHHc23zXeXz5JxMAVz-LST5o/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31270 |
in COATINGS TECH > Vol. 15, N° 8 (08/2018) . - p. 46-49
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Developing and evaluating early rain resistance in exterior architectural coatings in COATINGS TECH, Vol. 15, N° 8 (08/2018)
