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Influence of dynamic cyclic extension on the electrical conductivity of fast extrusion furnace (FEF) black loaded rubber vulcanizates
Author(s) -
Nasr G. M.,
Darwish K. A.,
Khairy S. A.,
Hassan H. H.,
Ateia E.
Publication year - 1995
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/pi.1995.210380307
Subject(s) - carbon black , natural rubber , materials science , composite material , conductivity , amplitude , electrical resistivity and conductivity , extrusion , carbon fibers , strain (injury) , temperature coefficient , chemistry , electrical engineering , medicine , physics , quantum mechanics , composite number , engineering
The influence of dynamic cyclic extension on the electrcal conductivity (σ) of 100 parts FEF carbon black loaded rubber (NR and SBR) vulcanizates was studied. The conductivity showed an initial rapid decrease with increasing cyclic strain amplitude, indicating a probable breakdown of the carbon black structure, owing to the masking of carbon particles by insulating rubber layers. The conduction mechanisms in these composites in terms of both the number of strain cycles and the strain amplitude were also studied. In addition, the temperature coefficient of conductivity was calculated for different amplitudes. It was greatly affected by the magnitude of the strain amplitude.