[article]
| Titre : |
Fabrication and mechanical characterization of carbon nanotube yarns, 3-D braids, and their composites |
| Type de document : |
texte imprimé |
| Auteurs : |
Alexander Bogdanovich, Auteur ; Philip Bradford, Auteur ; Shaoli Fang, Auteur ; Mei Zhang, Auteur ; Ray H. Baughman, Auteur ; Samuel Hudson, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 6-19 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Multi-wall carbon nanotubes are used in this work as building blocks in processing twisted continuous yarns, which are further converted into multi-ply yarns, 3-D braids and 3-D weaves. It is demonstrated, for the first time that 3-D micro-braids can be made solely of continuous carbon nanotube yarns and used as reinforcement for composites.
An updated draw-twist method for processing long continuous “single” yarns from multi-wall carbon nanotube forest is described. Then, five single yarns are plied together with opposite direction of twist relative to that in the single yarns, and this forms a five-ply nanotube yarn. Further, 5 such five-ply yarns are plied together with twist to form a 25-ply nanotube yarn. Also, 36 such five-ply yarns are used in fabrication of 3-D braid on special micro-braiding device. The second part of the paper presents comprehensive experimental studies of the multi-ply nanotube yarns, 3-D braids, and their reinforced micro-composites. Various approaches are developed for the nanotube yarn and nanotube braid diameter and cross-sectional area measurements using SEM images. Tensile test data of five-ply yarns, 25-ply yarns and 3-D braids are presented and discussed. Finally, composite micro-samples are made using the aforementioned yarns and braids with several epoxy resins dramatically differing in their viscosity. Their tensile mechanical properties (modulus, strength and ultimate strain) are obtained and analyzed. A thorough discussion about possible ways to improve mechanical properties of carbon nanotube yarns, braids and their composites concludes the paper. |
| Note de contenu : |
- Fabrication of carbon nanotube yarns
- 3-D braiding of carbon nanotube yarns
- 3-D weaving with nanotube yarns and 3-D braids
- Tensile testing of carbon nanotube yarns and braids
- Fabrication of nanotube yarn and braid composites
- Tensile testing of nanotube yarn and braid composites |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23440 |
in SAMPE JOURNAL > Vol. 43, N° 1 (01-02/2007) . - p. 6-19
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