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Some factors affecting the electrical properties of carbon‐black‐loaded butyl rubber during vulcanization
Author(s) -
AbdelBary E. M.,
Hassan H. H.,
ElLawindy A. M.,
AbuAssy M. K.,
ElTantawy F. K.
Publication year - 1993
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.4990300316
Subject(s) - vulcanization , carbon black , materials science , natural rubber , composite material , electrical resistivity and conductivity , kinetics , polymer chemistry , conductivity , chemistry , electrical engineering , engineering , physics , quantum mechanics
Butyl rubber mixtures loaded with 70 phr general purpose furnace black (GPF) and tetramethyl thiuram disulphide (TMTD)/S as vulcanizing system were prepared. The kinetics of their electrical conductivity development during the vulcanization process were followed by using an especially devised system. It was found that the increase in the electrical conductivity during vulcanization obeys an exponential growth function with time constant τ, which markedly decreases with increasing vulcanization temperature as well as with the efficiency of the vulcanizing system. After completion of the vulcanization process, about 80 min, the samples obtained possess reasonable stability and reproducibility of electrical conductivity.