| Titre : |
Difficult substrates well wetted : A low-foaming, low-VOC wetting agent that contains no APEOs |
| Type de document : |
texte imprimé |
| Auteurs : |
Vimal Saini, Auteur ; Wolfgang Fuchs, Auteur ; Elke Piron, Auteur ; Carlos Feita, Auteur ; Udo Schonhoff, Auteur ; Frank Abschlag, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 30-36 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Dispersions et suspensions
Mouillage (chimie des surfaces)
Polyacryliques
Revêtements organiques
Vernis en phase aqueuse -- Additifs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
As environmental regulations keep getting tighter and eco-friendly coatings become more popular, the time is ripe for a low-VOC wetting agent that is free of alkylphenol ethoxylates. It is designed to maximise wetting on even difficult-to-wet sub-strates and in a Ovide range of applications, such as aqueous coatings, TiO2 slurries, pigment concentrates, adhesives and inks. |
| Note de contenu : |
- Wetting basics
- Challenging water-bornes
- Experimental : Samples - Lower surface tension - Smaller contact angle - Look - No foam !
- Evaluation 1 : acrylic dispersion clearcoat
- Evaluation 2 : White wood-coating based on self-crosslinking acrylic dispersion
- Improved surface wetting - Better blocking resistance
- Good pore-filling
- Relative overall performance
- Substrate wettability in OPV ink and adhesive systems
- Fig. 1 : Contact angles formed by sessile liquid drops on a smooth homogeneous surface
- Fig. 2 : Static surface tension of aqueous solutions conhaining 0.3 wt.% wetting agent
- Fig. 3 : Evolution of advancing contact angle with 0.3% aqueous solutions of wetting agents on untreated polypropylene plastic and on glass substrate
- Fig. 4 : Foaming behaviour in aqueous solution
- Fig. 5 : Brush-applied clearcoat on Leneta test chart
- Fig. 6 : Wetting performance in white wood coating based on self-crosslinking acrylic dispersion
- Fig. 7 : Improved blocking resistance with "Supread 2059"
- Fig. 8 : Pore-filling ability via spray application (scale in all samples - A mm, except reference 3 : 3 mm
- Table 1 : Transparent clearcoat based on acrylic dispersion
- Table 2 : Wood coating based on self-crosslinking acrylic dispersion
- Table 3 : White window paint test formulation
- Table 4 : Overall application performance |
| En ligne : |
https://drive.google.com/file/d/1lnxpVc1v-ODQoDM0yd7J0cD1M50ClE5P/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33166 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 11 (11/2019) . - p. 30-36
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