| Titre : |
Durable water-borne wood coatings : Adding silane-modified colloidal silica enhances performance of water-borne clear coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Peter Greenwood, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 40-47 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Bois -- Revêtements protecteurs
Bois -- Vernis
Dureté (matériaux)
Epoxydes
Essais de résilience
Essais dynamiques
Formulation (Génie chimique)
Gel de silice
Polymères à silane modifié
Résistance à l'abrasion
Vernis -- Propriétés mécaniques
Vernis en phase aqueuse -- Additifs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
When making the switch from solvent-borne to water-borne coatings the goal is to not compromise the function and performance of wood coatings. The effect of using epoxy silane-modified colloidal silica in water-based clear coatings on open time and anti-blocking, sanding and mechanical properties was investigated. |
| Note de contenu : |
- Improving mechanical properties
- Lowering VOC
- Results
- Aesthetic properties not compromised
- Significant enhancement of block resistance
- Beneficial for sanding properties
- Keeping the solvent-borne look
- Significant improvements in mechanical properties in 2-pack systems
- Well distributed silica particles are beneficial
- The effect on abrasion resistance is formulation dependent
- Extended open time
- Influence on open time at constant viscosity
- Influence on open time for parquet lacquer formulations
- Fig. 1 : Sandability - sandpaper P180 and P 240
- Fig. 2 : Grain accentuation - Enhancement of grain structure by wood lacquers. 1-K water-based lacquer formulation N° 7 with and without 20% SiO2 addition of epoxy-silane modified colloidal silica
- Fig. 3 : Persoz hardness as a function of coating composition and drying time at ambient temperature for formulation N° 8
- Table 1 : Gloss and haze
- Table 2 : Block resistance results for clear 1-pack acrylic formulations
- Table 3 : Taber abrasion resistance - weight loss mg.
- Table. 4 : Open time - Influence of colloidal silica on open time at constant solid contents. Open time by brush method (ASTM D7488) and drying time recorder (ASTM D5895)
- Table 5 : Open time for PUD parquet lacquer formulations |
| En ligne : |
https://drive.google.com/file/d/1QwITcDE_hsQMUnA0CAZXfo0ux5JQlnX5/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30838 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2018) . - p. 40-47
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Durable water-borne wood coatings in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2018)
