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Electric self‐heating behavior of acetylene carbon black filled high‐density polyethylene composites
Author(s) -
Song Yihu,
Zheng Qiang
Publication year - 2004
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.1578
Subject(s) - materials science , high density polyethylene , composite material , carbon black , electric field , electric heating , polyethylene , electrical resistance and conductance , electric current , thermal , annealing (glass) , thermodynamics , electrical engineering , natural rubber , physics , quantum mechanics , engineering
The electric self‐heating behavior of carbon black (CB) filled high‐density polyethylene (HDPE) was studied in relation to the time‐dependent current and surface temperature under various voltages and to the voltage‐dependent surface temperature at electric–thermal equilibrium. The resistance increase due to self‐heating restricts the current flow through the sample and thus stabilizes the electric power and the self‐heating temperature to their saturation values, which vary with the voltage. A simple phenomenological model shows that self‐heating at electric‐thermal equilibrium is involved in the initial resistance, the electric field induced positive temperature coefficient (PTC) transition and the heat dissipation. The influences of annealing and irradiation crosslinking on the self‐heating behavior are discussed. Copyright © 2004 Society of Chemical Industry