| Titre : |
Inherent matte polyurethane dispersions as matting agent |
| Type de document : |
texte imprimé |
| Auteurs : |
Terri Carson, Auteur ; Mario Schoondermark, Auteur ; Markus Dimmers, Auteur ; David Folkman, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 38-44 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Agent mattant
Bois -- Vernis
Dispersions et suspensions
Formulation (Génie chimique)
Matières plastiques -- Revêtement
Parquets -- Revêtements protecteurs
Polymères aliphatiques
Polyuréthanes
Résistance chimique
Surfaces -- Analyse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The objective of this work is focused on the development of an inherent matte and hard polyurethane dispersion. Idally, such a polymer used in a low-gloss coating already has a matte polymer film without the use of any additional matting agents to avoid the above-mentioned drawbacks. Additional technical requirements have been defined :
- Solvent-free, hard aliphatic PUD
- Gloss levels of <5@20° /<20@60°/ /<50@85°
- Excellent sanding properties by machine sanding
- Resistance to chemicals and stains
- High optical clarity over dark substrates
- Scratch resistance
- No hard sedimentation in coatings
- Good compatibility with other resin binders
- Low amine content (1%)
- The manufacture of water-based polyurethane dispersions is well documented in literature and will not be discussed here. The scope of this work is to investigate this new development as a liquid matting agent in traditional wood floor finishes and as coatings for rigid plastics. |
| Note de contenu : |
FIGURES : 1. Matting mechanism - 2. Confocal microscopy of the hard matte PUD - 3. Analysis of height and particle size of the hard, matte PUD - 4. 3D surface profile of the hard, matte PUD vs a PUD with 1.5% pyrogenic silica - 5. Gloss as a function of % matte PUD in aliphatic PUD 1 - 6. Efficiency of hard matt PUD vs. pyrogenic silica in an aliphatic PUD 1 - 7. Koenig hardness values - 8. Black heel mark resistance - 9. Floor coating performance - 10. Ultra-matte floor finish with matte PUD - 11. Confocal microscoy of a matte, soft-feel PUD
- TABLES : 1. Semi-gloss wood flooring formulas - Ultra-matte floor finish properties |
| En ligne : |
https://drive.google.com/file/d/1YNVWrhyWmKcXjj0vri0NNMVn7lt8lssQ/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25758 |
in COATINGS TECH > Vol. 13, N° 2 (02/2016) . - p. 38-44
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