| Titre : |
Sustainable cardanol-based multifunctional carboxyl curing agents for epoxy coatings: Si–S synergism |
| Type de document : |
texte imprimé |
| Auteurs : |
Kunal Wazarkar, Auteur ; Anagha Sabnis, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 1217–1230 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosifs
Anticorrosion
Caractérisation
Cardanol
Composés inorganiques -- Synthèse
Epoxydes
Formulation (Génie chimique)
Hydrophobie
Réticulants
Revêtements organiques
Silicium
Synergie
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
High-performance epoxy coatings were prepared by crosslinking commercial diglycidyl ether of bisphenol-A with silicon–sulfur containing di- and tetra-functional carboxyl curing agents based on cardanol. The curing agents were synthesized and products were analyzed by chemical, spectroscopic, and chromatographic techniques. In the next part, coatings were formulated by varying the ratio of epoxy resin to curing agents on equivalent basis, such as 1:0.6, 1:0.8, and 1:1. The coatings were applied on mild steel panels and cured at 150°C for 30 min. The resultant coatings were evaluated for performance properties including mechanical, chemical, optical, thermal anticorrosive, and flame retardant properties. It was observed that with an increase in concentration of silicon–sulfur containing curing agents, water contact angles of the coatings substantially increased. Moreover, electrochemical impedance spectroscopy, Tafel analysis, and salt spray studies revealed that anticorrosive properties of the coatings improved with an increase in concentration of silicon and sulfur. In spite of synergistic effect of silicon–sulfur, only marginal improvement in flame retardant properties was observed. |
| Note de contenu : |
- EXPERIMENTAL : Synthesis of silicon containing dimer of cardanol (SIL) - Synthesis of Si–S containing multifunctional carboxyl curing agents - Formulation of coatings - Characterization - Instrumentation
- RESULTS AND DICUSSION : FTIR spectroscopy - 1H-NMR spectroscopy - Gel permeation chromatography - Coating properties |
| DOI : |
https://doi.org/10.1007/s11998-020-00341-4 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-020-00341-4.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34568 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 5 (09/2020) . - p. 1217–1230
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Sustainable cardanol-based multifunctional carboxyl curing agents for epoxy coatings: Si–S synergism in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
