[article]
| Titre : |
Effect of screw rotation speed on the properties of polycarbonate/vapor-grown carbon fiber composites prepared by melt compounding |
| Type de document : |
texte imprimé |
| Auteurs : |
Shuichi Tanoue, Auteur ; J. Nithikaranjanatharn, Auteur ; H. Okuzono, Auteur ; H. Ueda, Auteur ; Hideyuki Uematsu, Auteur ; Y. Iemoto, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 41-50 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Composites à fibres de carbone à croissance en phase vapeur
Déformations (mécanique)
Essais dynamiques
Extrudeuse bi-vis
Mouvement rotatoire
Polycarbonates
Rupture (mécanique)
Traction (mécanique)
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The effect of screw rotation speed on the mechanical property and thermal conductivity of polycarbonate (PC)/vapor-grown carbon fiber (VGCF) composites prepared by a twin screw extruder was discussed in this paper. Two types of VGCF (VGCF-H, the aspect ratio of 40, and VGCF-S, the aspect ratio of 100) were used. In the tensile test, the breaking pattern of PC composite changed to brittle failures by adding VGCF-H irrespective of screw rotation speed. Young's modulus of PC/VGCF-H slightly increased with the screw rotation speed. On the other hands, the breaking strain of PC/VGCF drastically decreased above 150 min?1. Young's modulus of PC/VGCF-S slightly increased with screw rotation speed until 150 min?1, however, it decreased at 175 min?1. The thermal conductivity of PC/VGCF-H was independent of the screw rotation speed. In contrast, the thermal conductivity of PC/VGCF-S gradually increased with screw rotation speed until 150 min?1 and it also decreased at 175 min?1. From the SEM observation and rheological behavior, the dispersion state of VGCF-H in PC/VGCF-H was independent of the screw rotation speed. On the other hands, the network structures of VGCF-S were observed in PC/VGCF-S and the state of these network structures depended on the screw rotation speed. It was clarified that the mechanical property and thermal conductivity of PC/VGCF were attributable to the dispersion state of VGCF. |
| Note de contenu : |
- Mechanical property and thermal conductivity
- Evaluation of dispersion state of VGCF |
| DOI : |
10.3139/217.2799 |
| En ligne : |
https://drive.google.com/file/d/1KAe1qYfjaYPZuimZ86w5le82-luirDQE/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20574 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 1 (03/2014) . - p. 41-50
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