Enhanced Electrical Conductivity of Nanocomposites Containing Hybrid Fillers of Carbon Nanotubes and Carbon Black

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Nanocomposites reinforced with hybrid fillers of carbon nanotubes (CNTs) and carbon black (CB) are developed, aiming at enhancing the electrical conductivity of composites with balanced mechanical properties while lowering the cost of the final product. Epoxy-based nanocomposites were prepared with varying combinations of CNTs and CB as conducting fillers, and their electrical and mechanical properties were evaluated. It was shown that the addition of CNTs in CB composites enhanced the electrical conductivity of composites: a low percolation threshold was achieved with 0.2 wt % CNTs and 0.2 wt % CB particles. The CB particles also enhanced the ductility and fracture toughness of nanocomposites, confirming the synergistic effect of CB as a multifunctional filler. The novelty of this work lies in the synergy arising from the combination of two conducting fillers with unique geometric shapes and aspect ratios as well as different dispersion characteristics, which have not been specifically considered previously.
Publisher
ACS
Issue Date
2009-05
Language
English
Article Type
Article
Keywords

PERCOLATION-THRESHOLD; EPOXY COMPOSITE; POLYMER BLENDS; TOUGHNESS; BEHAVIOR

Citation

ACS APPLIED MATERIALS & INTERFACES, v.1, pp.1090 - 1096

ISSN
1944-8244
DOI
10.1021/am9000503
URI
http://hdl.handle.net/10203/98985
Appears in Collection
MS-Journal Papers(저널논문)
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