| Titre : |
Novel water-dispersible glycidyl carbamate (GC) resins and waterborne amine-cured coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Umesh D. Harkal, Auteur ; Andrew J. Muehlberg, Auteur ; Peter A. Edwards, Auteur ; Dean C. Webster, Auteur |
| Année de publication : |
2011 |
| Article en page(s) : |
p. 735-747 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Carbamate de glycidyle
Epoxydes
Hydrophilie
Monte-Carlo, Méthode de
Polyuréthanes
Revêtements en phase aqueuse:Peinture en phase aqueuse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Water-dispersible glycidyl carbamate (GC) functional resins were synthesized and crosslinked using a water-dispersible amine to form coatings. GC functional resins are synthesized by the reaction of an isocyanate functional compound with glycidol to yield a carbamate (urethane) linkage (–NHCO–) and reactive epoxy group. The combination of both functionalities in a single resin structure imparts excellent mechanical and chemical properties to the coatings. Previous studies on the development of GC coatings have focused on solvent-borne coating systems. In this study, GC resins were modified by incorporating nonionic hydrophilic groups to produce water-dispersible resins. To determine the influence of the content of hydrophilic groups on dispersion stability, aqueous dispersions were made from a series of hydrophilically modified GC resins and characterized for particle size and dispersion stability. The composition of a typical, dispersed GC resin particle was predicted using Monte Carlo simulations. Stable GC dispersions were used to prepare amine-cured coatings. The coatings were characterized for solvent resistance, water resistance, hardness, flexibility, adhesion, and surface morphology. It was observed that GC resins were able to be dispersed in water without using any surfactant and by minimal mixing force (hand mixing) and produced coating films with good properties when crosslinked with a compatible waterborne amine crosslinker. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Synthesis of mPEG-modified GC resins - Characterization - Coating formulation preparation - Coating performance - Differential scanning colorimetry (DSC) - Thermogravimetric analysis (TGA) - Dynamic mechanical analysis (DMA) - Atomic force microscope (AFM) - Salt spray test
- RESULTS AND DISCUSSION : Synthesis of water-dispersible GC resins - Dispersion stability - Coating formulations - Water and solvent resistance - Water contact angle - Other coating properties - Further analysis of the coating properties - Thermal stability - Salt spray test |
| DOI : |
10.1007/s11998-011-9356-8 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9356-8.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12600 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 6 (11/2011) . - p. 735-747
Aller sur edunet
Accueil
Ajouter le résultat dans votre panier Affiner la rechercheNovel polyurethane coating technology through glycidyl carbamate chemistry / Peter A. Edwards in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 7 (07/2005)
