[article]
| Titre : |
Improving the mechanical properties of ENR/NBR blends via masterbatches with initial accelerator concentration gradients |
| Type de document : |
texte imprimé |
| Auteurs : |
K. Sahakaro, Auteur ; N. Pantupon, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 140-145 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
Epoxidized natural rubber with 30 mol.% of epoxide (ENR-30) was blended with medium nitrile rubber (NBR) at the blend weight ratios of 30/70 and 70/30. Blend compounds were prepared via simple mixing and masterbatch techniques using TBBS as an accelerator. The masterbatches of ENR-30 initially consisted of higher accelerator concentrations compared with those of NBR, in order to compensate an effect of accelerator partition towards NBR phase. The initial accelerator concentration ratios in ENR-30 and NBR masterbatches before blending were at 50/50, 60/40, 70/30 and 80/20, respectively. The blend vulcanizates prepared by masterbatch mixing showed a significant improvement in tensile properties in comparison with those prepared by simple blend, and the initial accelerator concentration ratio in ENR-30/NBR masterbatches at 70/30 gave the highest ultimate tensile properties. The improvement in tensile properties was clearly observed for all the blends vulcanized with conventional, semi-EV and EV sulfur-vulcanization systems. The increase of tensile properties does suggest a better curative distribution, and hence a better crosslink distribution. |
| DOI : |
10.3139/217.2020 |
| En ligne : |
https://drive.google.com/file/d/1WVq6DS1pA8G-cMPf004CpH2WfQqgZ0dp/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2640 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIII, N° 2 (05/2008) . - p. 140-145
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