| Titre : |
Effect of functionality and molecular weight of polyester on elastomeric properties of 2K polyurethane coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
H. S. Joglekar, Auteur ; K. V. Dave, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 41-46 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The concept of 2K polyurethane coatings having good elastomeric properties is getting widely appreciated all across. The conventional polyesters fail in rendering elastomeric properties. In order to synthesise the right type of polyester suitable for 2K polyurethane coatings imparting good elastomeric properties, a comprehensive study has been done. This paper will focus on an important aspect of effect of functionality and molecular weight of polyesters on elastomeric properties of 2K polyurethane coatings. The study highlights the structural requirements of a polymer backbone having high cohesive energy and offering the desired performance. Such systems are described in detail w.r. t. specific performance requirements, formulations, processing techniques, application method and evaluation findings. Different polyester-polyol systems designed show good elastomeric properties based on a definite optimal balance molecular flexibility and chain stiffness so as to offer better elastomeric properties. |
| Note de contenu : |
- Two pack polyether-polyol poly isocynate system
- One pack moisture cured urethane systems
- Two pack – polyester polyol / polyisocynate system
- Experimenal : Material section – Selection of polyols – Selection of polyacids – Isocynates – Processing and testing |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12533 |
in PAINTINDIA > Vol. LI, N° 2 (02/2001) . - p. 41-46
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