| Titre : |
Hyperbranched polyurethane based high-solid protective coating for marine application |
| Type de document : |
texte imprimé |
| Auteurs : |
R. Baloji Naik, Auteur ; G. Gunasekaran, Auteur ; D. Ratna, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 53-66 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Adhésion
Anticorrosifs
Anticorrosion
Essais accélérés (technologie)
Essais dynamiques
Formulation (Génie chimique)
Haut extrait sec
Marines (peinture)
Pigments inorganiques
Polymères ramifiés
Polyuréthanes
Résistance aux conditions climatiques
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements antisalissures:Peinture antisalissures
Revêtements bi-composant:Peinture bi-composant
Spectroscopie d'impédance électrochimique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
High-solid two-pack paint formulations based on hyperbranched alkyd polyol (HBA) and isocyanate curing agents were developed for high performance exterior coating application. The base component consists of a hyperbranched alkyd polyol (HBA) resin and a mixture of pigments like titanium dioxide, yellow iron oxide, carbon black and talc. The pigments were dispersed in the HBA resin using a ball milI for a period of 6 - 7 h. The base component is then cured separatly with two different types of isocyanate curing agents such as aliphatic isocyanate (Desmodur N3390) and cycloaliphatic isocyanate (Desmodur Z4470). These experimental paint compositions were applied on mild steel specimens coated with epoxy red oxide primer (two coats of primer and two coats of exterior grey paint). The coating systems were evaluated for adhesion, tensile, corrosion and weathering resistance properties. For comparison, specimens of the conventional (silicone alkyd) paint was also prepared and tested. Results indicate that the developed coating composition have superior mechanical, corrosion resistance and weathering resistance properties compared to the conventional silicone alkyd coating. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Design of HBUA based high solid paint formulations - Mechanical properties - Adhesion strength - Evaluation of resistance to accelerated weathering - Evaluation of corrosion resistance property under different exposure conditions - Electrochemical impedance spectroscopy (EIS)
- RESULTS AND DISCUSSION : Physical properties - Mechanical properties - Abrasion, scratch, impact resistance and flexibility tests - Adhesion strength - Accelerated weathering test - Accelerated corrosion test - Electrochemical impedance spectroscopy |
| En ligne : |
https://drive.google.com/file/d/1bTS6N1nH82_lqCplbUj3uv8mXD11kQXi/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31933 |
in PAINTINDIA > Vol. LXVIII, N° 12 (12/2018) . - p. 53-66
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Hyperbranched polyurethane based high-solid protective coating for marine application in PAINTINDIA, Vol. LXVIII, N° 12 (12/2018)
