| Titre : |
Dispersion enhancement of multi-walled carbon nanotubes in nitrile rubber |
| Type de document : |
texte imprimé |
| Auteurs : |
A. Boonbumrung, Auteur ; P. Sae-oui, Auteur ; Chakrit Sirisinha, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 317-324 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Caoutchouc nitrile-butadiène
Composites à fibres de carbone -- Propriétés électriques
Composites à fibres de carbone -- Propriétés mécaniques
Mélange
Nanotubes
Nanotubes de carbone à parois multiplesUn nanotube de carbone multifeuillet est constitué de plusieurs feuillets de graphènes enroulés les uns autour des autres. Il existe deux modèles pour décrire la structure des nanotubes multifeuillets :
- le modèle poupée russe: les plans de graphène sont arrangés en cylindres concentriques ;
- le modèle parchemin: un seul feuillet de graphène est enroulé sur lui-même, comme une feuille de papier.
Nitrique, Acide
Permanganate de potassium
Sulfurique, Acide
Traitement chimique
Ultrasons
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
A study of reinforcement mechanism of multi-walled carbon nanotubes (MWCNT) in nitrile rubber (NBR) matrix was carried out. Attempts to enhance the dispersion degree of MWCNT and the NBR-MWCNT interaction were conducted using numerous approaches, namely, sonication and chemical treatments of MWCNT with nitric acid (HNO3), nitric-sulfuric acid mixture (HNO3/H2SO4) and potassium permanganate (KMnO4). Rheological behavior, dynamic properties and electrical properties of MWCNT/NBR vulcanizates were monitored. Results gained reveal the magnitude of Payne effect increases with MWCNT content and mixing time. The expanded MWCNT and continuous-network formation are observed with an increase in mixing time, yielding enhanced mechanical properties and electrical properties. With MWCNT modification, a significant reduction in the state-of-mix of MWCNT composites is exhibited. SEM results demonstrate the highest magnitude of MWCNT dispersion in the system with HNO3, but relatively poor interaction with NBR. The HNO3/H2SO4 or KMnO4 system demonstrates poor MWCNT dispersion after treatment which is probably due to the compaction of MWCNT during the drying stage after the chemical treatment process, giving the detrimental effect to mechanical and electrical properties of vulcanizates. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Composite preparation
- RESULTS AND DISCUSSION : Effect of mixing time - Effect of MWCNT modification |
| DOI : |
10.3139/217.2928 |
| En ligne : |
https://drive.google.com/file/d/1GlLhu_VldQPbLjN1_w1EYZ7HuzVDyUJv/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21728 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 3 (07/2014) . - p. 317-324
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Dispersion enhancement of multi-walled carbon nanotubes in nitrile rubber in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 3 (07/2014)
