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Study of the conductive paths of carbon‐black‐filled polyethylene composites by the alternating‐current impedance method
Author(s) -
Sun Daoxing,
Wei Yanyan
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27930
Subject(s) - carbon black , electrical conductor , composite material , materials science , polyethylene , electrical resistivity and conductivity , dielectric spectroscopy , conductive polymer , polymer , electrode , electrical engineering , chemistry , natural rubber , electrochemistry , engineering
Conductive carbon‐black (CB)‐filled polyethylene composites were prepared after irradiation with a cobalt 60 source. The conductive composites were characterized by alternating‐current impedance spectroscopy, and the conductive mechanism of the conductive composites was analyzed in terms of a mathematical model. The values of the conductive ability, conductive style, sum of the electrical resistance of the continuous CB chains, electrical resistivity of the CB chains with one gap or a few small gaps, room‐temperature resistance, and slopes of the conductive composites were calculated. The investigation indicated that there existed continuous (contacting)‐path CB chains, small‐gap chains, and larger gap CB chains inthe composites, and the conductive paths in the composites were considered to be a three‐dimensional network. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008