title: Enhanced electrical conductivity of nanocomposites containing hybrid fillers of carbon nanotubes and carbon black.
abstract: 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.
authors.affiliation: Departments of Mechanical Engineering, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China.
authors.forename: Peng-Cheng
authors.initials: PC
authors.lastname: Ma
authors.forename: Ming-Yang
authors.initials: MY
authors.lastname: Liu
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.forename: Sheng-Qi
authors.initials: SQ
authors.lastname: Wang
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
authors.forename: Kai
authors.initials: K
authors.lastname: Wang
authors.forename: Yiu-Kei
authors.initials: YK
authors.lastname: Wong
authors.forename: Ben-Zhong
authors.initials: BZ
authors.lastname: Tang
authors.forename: Soon-Hyung
authors.initials: SH
authors.lastname: Hong
authors.forename: Kyung-Wook
authors.initials: KW
authors.lastname: Paik
authors.forename: Jang-Kyo
authors.initials: JK
authors.lastname: Kim