| Titre : |
Novel additive for easier "easy-to-clean" : A novel surface modifier based on a fluoro-modified polyacrylate block copolymer with co-reactive functionalities is presented |
| Type de document : |
texte imprimé |
| Auteurs : |
Ulrich Tritschler, Auteur ; Ralf Knischka, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 34-41 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Angle de contact
Copolymères séquencés
Dépôt par pulvérisation
Essais accélérés (technologie)
Fluoropolymères
Formulation (Génie chimique)
Polyacrylates
Revêtements -- Additifs:Peinture -- Additifs
Revêtements bi-composant:Peinture bi-composant
Surfaces -- Nettoyage
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Analytical methods and application tests provide insights into the efficient modification of coating surfaces, the fundamental working principle of the fluoro-containing surface modifier, and the weathering resistance of the additivated coating surfaces. The additive concept provides a high versatility for a variety of solvent-borne formulation systems. |
| Note de contenu : |
- Why are block copolymers preferred ?
- Tracking of block copolymers with different molecular weights via in-depth surface characterisation
- Weathering stability of surface effect
- Selective application testing for easy-to-clean coating surfaces
- Experimental section
- Fig. 1 : Technical approach : Block copolymer design with co-reactive units X and fluoro-containing units
- Fig. 2 : Water contact angle as a function of surface free energy (SFE) when adding different copolymers additives (1 and 5 %)
- Fig. 3 : Representative ToF-SIMS depth profiles of a 2K PU coating surface without additive (a) and different additive addition levels (b,c)
- Fig. 4 : Determination of the material-specific sputter rate : Correlation of sputter time/sputter cylces with sputter depth
- Fig. 5 : Water contact angle of additivated 2K PU coating surfaces as a function of weathering time (500, 1000 and 2000 h ; accelerated weathering standard SAE J 2527)
- Fig. 6 : (a) Typical ToF-SIMS depth profile of 2K PU coating surfaces during accelerated weathering (standard SAE J 2527) ; b-e) Representative AFM height and phase images of the coating surface before weathering (b,c) and after a weathering time of 1000h (d,e)
- Fig. 7 : Table with finger print rating, initial visibility, including images of finger prints from left to right (very bad = 1, medium = 3, good = 4 & very good = 5)
- Table 1 : Formulation details
|
| En ligne : |
https://drive.google.com/file/d/14CWZC2pY_mPFZ-AYsmFavjTsRqVEjBha/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32689 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 6 (06/2019) . - p. 34-41
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