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Dielectric behavior of TiC–PVDF nanocomposites
Author(s) -
Wang Fajun,
Zhou Dongxiang,
Gong Shuping
Publication year - 2009
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200802232
Subject(s) - dielectric , materials science , percolation threshold , composite material , nanocomposite , percolation (cognitive psychology) , volume fraction , composite number , percolation theory , hot pressing , filler (materials) , dielectric loss , high κ dielectric , conductivity , electrical resistivity and conductivity , chemistry , electrical engineering , optoelectronics , neuroscience , biology , engineering
TiC/PVDF nanocomposite is prepared via simple blending and hot pressing route. Percolation theory was employed to explain the dielectric behavior of the TiC/PVDF composites. The dependence of the dielectric properties of the composite on both volume fraction of the filler and frequency is investigated. High dielectric constant ( ϵ = 540) and low loss (tan δ = 0.48) of the composites at 100 Hz have been observed near the percolation threshold (0.12). The composites show a weak frequency dependence towards the high frequency range (10–100 kHz), regardless of the TiC content. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)