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Frequency and temperature dependence of ac electrical properties of graphitized carbon‐black filled rubbers
Author(s) -
Abdul Jawad S.,
Alnajjar A.
Publication year - 1997
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199710)44:2<208::aid-pi840>3.0.co;2-m
Subject(s) - carbon black , materials science , composite material , atmospheric temperature range , activation energy , volume fraction , relaxation (psychology) , volume (thermodynamics) , carbon fibers , electrical resistivity and conductivity , filler (materials) , natural rubber , chemistry , thermodynamics , organic chemistry , physics , composite number , psychology , social psychology , electrical engineering , engineering
The a.c. electrical properties of graphitized carbon‐black filled rubbers were investigated in the temperature range 25–85°C and in the frequency range 10–10 6 Hz. The volume fraction of the filler varied from 15 to 60%. The a.c. impedance was found to decrease dramatically with increasing filler content for volume fractions higher than 30%. A relaxation transition with an activation energy of 26·4–50 kJ/mol was observed only in the samples containing 45% and 60% of the fillers. ©1997 SCI