Dielectric behavior of a metal-polymer composite with low percolation threshold

Yun Jia Li; Man Xu; Jun Qiang Feng; Zhi Min Dang

doi:10.1063/1.2337157

Dielectric behavior of a metal-polymer composite with low percolation threshold

Yun Jia Li
, Man Xu
, Jun Qiang Feng
, Zhi Min Dang

School of Electrical Engineering

Beijing University of Chemical Technology

Research output: Contribution to journal › Article › peer-review

215 Scopus citations

Abstract

Stainless steel fiber (SSF)/poly(vinylidene fluoride) composite is prepared via simple blending and hot pressing route. The dependence of the dielectric properties of the composite on both volume fraction of the fillers and frequency is investigated. The percolation threshold of the composite, 9.4 vol % (0.094 volume fraction), is much lower than that of the common two phase metal particle-polymer composite. A dielectric constant of 427 is observed at 50 Hz with 10 vol % of SSF. Large enhancements of the ac conductivity and loss tangent are also observed near the percolation threshold. The dielectric properties are explained by percolation theory while the dielectric anomalies are attributed to the high slenderness ratio of the SSF fillers.

Original language	English
Article number	072902
Journal	Applied Physics Letters
Volume	89
Issue number	7
DOIs	https://doi.org/10.1063/1.2337157
State	Published - 2006

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title = "Dielectric behavior of a metal-polymer composite with low percolation threshold",

abstract = "Stainless steel fiber (SSF)/poly(vinylidene fluoride) composite is prepared via simple blending and hot pressing route. The dependence of the dielectric properties of the composite on both volume fraction of the fillers and frequency is investigated. The percolation threshold of the composite, 9.4 vol \% (0.094 volume fraction), is much lower than that of the common two phase metal particle-polymer composite. A dielectric constant of 427 is observed at 50 Hz with 10 vol \% of SSF. Large enhancements of the ac conductivity and loss tangent are also observed near the percolation threshold. The dielectric properties are explained by percolation theory while the dielectric anomalies are attributed to the high slenderness ratio of the SSF fillers.",

author = "Li, \{Yun Jia\} and Man Xu and Feng, \{Jun Qiang\} and Dang, \{Zhi Min\}",

year = "2006",

doi = "10.1063/1.2337157",

language = "英语",

volume = "89",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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T1 - Dielectric behavior of a metal-polymer composite with low percolation threshold

AU - Li, Yun Jia

AU - Xu, Man

AU - Feng, Jun Qiang

AU - Dang, Zhi Min

PY - 2006

Y1 - 2006

N2 - Stainless steel fiber (SSF)/poly(vinylidene fluoride) composite is prepared via simple blending and hot pressing route. The dependence of the dielectric properties of the composite on both volume fraction of the fillers and frequency is investigated. The percolation threshold of the composite, 9.4 vol % (0.094 volume fraction), is much lower than that of the common two phase metal particle-polymer composite. A dielectric constant of 427 is observed at 50 Hz with 10 vol % of SSF. Large enhancements of the ac conductivity and loss tangent are also observed near the percolation threshold. The dielectric properties are explained by percolation theory while the dielectric anomalies are attributed to the high slenderness ratio of the SSF fillers.

AB - Stainless steel fiber (SSF)/poly(vinylidene fluoride) composite is prepared via simple blending and hot pressing route. The dependence of the dielectric properties of the composite on both volume fraction of the fillers and frequency is investigated. The percolation threshold of the composite, 9.4 vol % (0.094 volume fraction), is much lower than that of the common two phase metal particle-polymer composite. A dielectric constant of 427 is observed at 50 Hz with 10 vol % of SSF. Large enhancements of the ac conductivity and loss tangent are also observed near the percolation threshold. The dielectric properties are explained by percolation theory while the dielectric anomalies are attributed to the high slenderness ratio of the SSF fillers.

UR - https://www.scopus.com/pages/publications/33747494886

U2 - 10.1063/1.2337157

DO - 10.1063/1.2337157

M3 - 文章

AN - SCOPUS:33747494886

SN - 0003-6951

VL - 89

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 7

M1 - 072902

ER -

Dielectric behavior of a metal-polymer composite with low percolation threshold

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