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Electrical conductivity of carbon black filled polymers—effects of morphology and processing
Author(s) -
Lee BiingLin
Publication year - 1993
Publication title -
journal of vinyl technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 0193-7197
DOI - 10.1002/vnl.730150311
Subject(s) - carbon black , materials science , volume fraction , composite material , percolation threshold , rheology , conductivity , percolation (cognitive psychology) , electrical resistivity and conductivity , morphology (biology) , particle (ecology) , atomic packing factor , polymer , electrical conductor , chemistry , natural rubber , genetics , oceanography , engineering , neuroscience , geology , electrical engineering , biology , crystallography
This paper discusses the relation of the morphology of conductive carbon black and its critical volume fraction, ϕ c , required to achieve semiconductor property. We also discuss the influence of processing on the electrical conductivity of polymer composites. An equation based on the crowding factor of concentrated suspension rheology and Janzen's particle contacts percolation is proposed to describe the relationship between ϕ c , and the maximum packing fraction of conductive fillers. The relationship could explain the influence of particle morphology on conductivity and the conductivity difference in the high shear and low shear region of a processed polymer composite part.