| Titre : |
Taking the next step in fast curing 2K NCO technology |
| Type de document : |
texte imprimé |
| Auteurs : |
Francesca Fallani, Auteur ; G. Fuerpass, Auteur ; Andringa (H.), Auteur ; B. Mulder, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 130-135 |
| Langues : |
Anglais (eng) |
| Catégories : |
Agents dispersants (chimie)
Durée de vie en pot
Essais de brouillard salin
Formulation (Génie chimique)
Haut extrait sec
Isocyanates
Polyacryliques
Polyols
Réticulation rapide
Revêtements bi-composant
Vernis
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Obtaining an improved balance between drying time and pot life is an ever-ongoing challenge in 2K isocyanate coatings. In this paper, allnex presents technology that takes 2K NCO curing to the next level, shortening the drying time down to 1 hour at room temperature, while increasing the pot life. In addition, the open time can be tuned and early hardness and chemical resistance are significantly improved. |
| Note de contenu : |
- Clear coat application performance
- SETALUX FC medium solids acrylic polyols
- SETALUX FC high solids acrylic polyols
- Study of clear coat conversion and coating properties
- DUROFTAL FC high solid polyester polyols for top coat application
- Formulation advice
- Table 1 : Comparison of application data of new FC technology with standard medium solids
- Table 2 : SETALUX FC high solids grades
- Table 3 : Comparison of application data of new FC technology with standard high solids systems
- Table 4 : Comparison of TG and crosslinking density between a standard system and the new fast cure technology
- Table 5 : DURFTAL FC high solids grades
- Table 6 : Paint data and drying performances of DUROFTAL FC and SETALUX FC grades versus high solids acrylic references
- Table 7 : Hardness development and MEK resistance of DUROFTAL FC SETALUX FC grades versus high solids acrylic references
- Table 8 : Salt spray and humidity resistance data of red pigmented topcoat based on DUROFTAL FC 2828
- Table 9 : Top coat formulations based on DUROFTAL FC 9511/80BAC
- Fig. 1 : Pot life-drying balance comparison of new Fast Cure technology with a standard medium solids system : the size of the circles correlates with the hardness measured 1h after curing for 30 minutes at 60°C
- Fig. 2 : Pot life-drying balance comparison of new Fast Cure technology with standard high solids systems ; the size of the circles correlates with the hardness measured 1 hour after tack-free time at RT
- Fig. 3 : Isocyanate conversion versus time determined with infrared spectroscopy
- Fig. 4 : Salt spray testing on red pigmented topcoat based on DUROFTAL FC 2828 for 1000 hours
- Fig. 5 : Impact of dispersant on pot life of top coat formulations based on DUROFTAL FC 9511/80BAC
- Fig. 6 : Spider diagram summarising the advantages and special features of high solids fast cure resins |
| En ligne : |
https://drive.google.com/file/d/1engh2Nu8Zn9NyaXRMIVrBoi1jPPEC-dD/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36000 |
in SURFACE COATINGS INTERNATIONAL > Vol. 104.2 (03-04/2021) . - p. 130-135
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Taking the next step in fast curing 2K NCO technology in SURFACE COATINGS INTERNATIONAL, Vol. 104.2 (03-04/2021)
