The mechanical and electrical properties of direct-spun carbon nanotube mats
Publication Date
2018-05Journal Title
Extreme Mechanics Letters
ISSN
2352-4316
Publisher
Elsevier BV
Volume
21
Pages
65-75
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Stallard, J., Tan, W., Smail, F., Gspann, T., Boies, A., & Fleck, N. (2018). The mechanical and electrical properties of direct-spun carbon nanotube mats. Extreme Mechanics Letters, 21 65-75. https://doi.org/10.1016/j.eml.2018.03.003
Abstract
The mechanical and electrical properties of a direct-spun carbon nanotube mat are measured. The mat comprises an interlinked random network of nanotube bundles, with approximately 40 nanotubes in a bundle. A small degree of in-plane anisotropy is observed. The bundles occasionally branch, and the mesh topology resembles a 2D lattice of nodal connectivity slightly below 4. The macroscopic in-plane tensile response is elasto-plastic in nature, with significant orientation hardening. In-situ microscopy reveals that the nanotube bundles do not slide past each other at their junctions under macroscopic stain. A micromechanical model is developed to relate the macroscopic modulus and flow strength to the longitudinal shear response of the nanotube bundles. The mechanical and electrical properties of the mat are compared with those of other nanotube arrangements over a wide range of density.
Sponsorship
EPSRC (EP/M015211/1)
Engineering and Physical Sciences Research Council (EP/M015211/1)
Embargo Lift Date
2100-01-01
Identifiers
External DOI: https://doi.org/10.1016/j.eml.2018.03.003
This record's URL: https://www.repository.cam.ac.uk/handle/1810/277229
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