| Titre : |
Rapid Protection : Fast-curing polycarbamide system creates low VOC direct-to-metal (DTM) finishes |
| Type de document : |
texte imprimé |
| Auteurs : |
Sudhir Ananthachar, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 18-24 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Anticorrosifs
Anticorrosion
Application directe sur le métal
Formulation (Génie chimique)
Liants
Métaux -- Revêtements protecteurs
Polyaspartiques
Polycarbamide
Polyisocyanates
Résistance chimique
Réticulants
Revêtement -- Séchage
Vernis
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
A new polycarbamide-isocyanate binder system was compared with 2K PU coatings in both DTM anticorrosive and topcoat formulations. Performance was similar, but with faster drying and considerably lower VOCs. Advantages were also found over polyaspartics. |
| Note de contenu : |
- Limitations of 2K PU coatings in DTM applications
- Basic properties of the polycarbamide curing agents
- Faster drying and lower VOCs achieved
- Corrosion and chemical resistance comparable to 2K PU
- Topcoat compared with acrylic urethane system
- Some advantages also shown over polyaspartics
- A broad spectrum of property improvements
- TABLES : 1. Gel times and typical physical properties of PCA1 and PCB1 - 2. Typical physical properties of aliphatic polyisocyanate resin - 3. DTM and pigmented topcoat formulations - 4. Pigmented acrylic polyol topcoat formulation - 5. DTM coatings : performance properties of PCA1 - 6. DTM corrosion performance on cold-rolled steel - 7. Chemical resistance spot tests on DTM coatings - 8. Performance properties of polycarbamide and acrylic urethane topcoats
- FIGURES : 1. Key moieties within the polymeric crosslinked systems polycarbamide and polyurethane - 2. Pot life of polycarbamides compared - 2. Polycarbamide DTM coatings, 500h corrosion resistance. Left, iron phosphated steel ; centre, zinc phosphated steel ; right sand blasted steel - 4. Polycarbamide DTM and 2K polyurethane DTM, 500h corrosion resistance over cold rolled steel and polycarbamide and 2K:PU |
| En ligne : |
https://drive.google.com/file/d/11tjaIZS9mp7t7TJ57vnlNS2HaSyH_PBT/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27819 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 2 (02/2017) . - p. 18-24
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Rapid Protection in EUROPEAN COATINGS JOURNAL (ECJ), N° 2 (02/2017)
