[article]
| Titre : |
Syntheses and characterizations of two-component polyurethane flame retardant coatings using 2,4-dichloro modified polyesters |
| Type de document : |
texte imprimé |
| Auteurs : |
Chang-Hwan Park, Auteur ; Jong-Pyo Wu, Auteur ; Hong-Soo Park, Auteur ; Seong-Kil Kim, Auteur |
| Année de publication : |
1997 |
| Article en page(s) : |
p. 41-47 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Couches minces
Dichlorobenzoïque, Acide
Durée de vie en pot
Esterification
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Polycondensation
Polyester chloré
Polyesters
Polyisocyanates
Polyuréthanes
Revêtement -- Séchage
Revêtements bi-composant
Triméthylolpropane
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Polyurethane flame retardant coatings are composed of polyols and polyisocyanates. Flame retardant groups are usually introduced to the polyol structure. In this research intermediates were obtained by esterification of 2,4-dichlorobenzoic acid and trimethylolpropane for the purpose of introducing a flame retardant group to the polyol structure. Then chlorine-containing modified polyesters were synthesized by polycondensation of trimethylolpropane, adipic acid, 1,4-butanediol, and the intermediate. The content of 2,4-dichlorobenzoic acid in the intermediate was varied with 10, 20, and 30 wt%. Two-component polyurethane flame retardant coatings were prepared by blending the products with polyisocyanate. Various physical properties of these new flame retardant coatings were comparable to non-flame retardant coatings. They showed drying times of four to seven hours and pot life times of 14-20 hr, which could belong to the flame retardant coatings with long pot life time. The coating with 30 wt% 2,4-dichlorobenzoic acid showed a self-extinguishing property in the vertical burning test. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Syntheses of 2,4-dichloro modified polyesters - Chlorine contents and kinematic viscosity - Instrumental analyses - Preparation of two-component polyurethane flame retardant coatings - Tests of General properties for flame retardant coatings - Flame retardancy tests
- RESULTS AND DISCUSSION : Indentification of 2,4-dichloro modified polyesters - Effects of DCBA content on the kinematic viscosity of modified polyesters - Thermal properties of 2,4-dichloro modified polyesters - Physical properties of flame retardant coatings - Flame retardancy of coatings |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18068 |
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 69, N° 875 (12/1997) . - p. 41-47
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Syntheses and characterizations of two-component polyurethane flame retardant coatings using 2,4-dichloro modified polyesters in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 875 (12/1997)
