| Titre : |
Toughening of cardanol based epoxidized novolac resin with acrylonitrile butadiene liquid ruber |
| Type de document : |
texte imprimé |
| Auteurs : |
Ranjana Yadav, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 55-59 |
| Note générale : |
Bibliogr |
| Langues : |
Anglais (eng) |
| Catégories : |
Caoutchouc
Cardanol
Copolymère carboxyle terminé de Butadiène-acrylonitrile
Epoxydes
Morphologie (matériaux)
Réticulation (polymérisation)
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Epoxy resins are considered as one of the most important classes of thermosetting polymers for many industrial applications, but unfortunately they are characterized by a relatively low toughness. An epoxy resin based on cardanol and varying content of carboxyl-terminated (poly)butadiene acrylonitrile copolymer was cured using polyamine as a hardener. The ultimate aim of the study was to modify the brittle epoxy matrix by the liquid rubber to improve toughness characteristics. In this respect, many efforts have been made to improve the toughness of cured epoxy resins by the introduction of rigid particles, reactive rubbers, interpenetrating polymer networks and thermoplastics within the matrix. Toughening of blend of cardanol based epoxidized novolac resin withvarying weight ration (0-25 wt%) of carboxyl terminated butadiene acrylonitrile (CTBN) copolymer have been investigated. Fourier transform infrared (FTIR) spectroscopic analysis established that the interaction between oxirane groups of epoxy and CTBN were responsible for characteristic peak shifts in the blends compared to their counterparts. Scanning electron microscopy of fracture surfaces indicates cavitation of the rubber particles to be a major deformation mechanism. Particle-particle interaction is also found. |
| Note de contenu : |
-MATERIALS : Preparation of blend samples of cardanol-based epoxidized novolac resins and carboxyl-terminated butadiene acrylonitrile copolymer (CTBN)
- CHARACTERIZATION OF BLEND SAMPLES : Fourier transforms infrared spectroscopic analysis - Morphology
- RESULTS AND DISCUSSION : Studies on the FTIR spectroscopic analysis - Toughening of epoxy resin by liquid rubber - Chemistry - Morphology and fracturography |
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https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17165 |
in PAINTINDIA > Vol. LXII, N° 12 (12/2012) . - p. 55-59
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Toughening of cardanol based epoxidized novolac resin with acrylonitrile butadiene liquid ruber in PAINTINDIA, Vol. LXII, N° 12 (12/2012)
