2014
DOI: 10.1109/tdei.2014.004387
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Abstract: Polyethylene is commonly used as an insulator for AC power cables. However it is known to undergo chemical and physical change which can lead to dielectric breakdown. Despite almost eighty years of experimental characterization of its electrical properties, very little is known about the details of the electrical behaviour of this material at the molecular level. An understanding of the mechanisms of charge trapping and transport could help in the development of materials with better insulating properties requ… Show more

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Cited by 4 publications
(1 citation statement)
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References 62 publications
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“…In case of polyethylene, where charge transport dynamics through disordered molecular conformations has been studied in details, the presence of localized regions of free volume has been shown to be an important factor in electronic conduction. [40][41][42] Finally, the presence of GHE modifies the viscosity of the reacting system prior to vitrification; while the measured viscosity at 20 °C of the neat epoxy was 0.266±(4x10 -4 ) Pa.s, this figure was reduced to 0.101±(4x10 -4 ) Pa.s for 30GHE. As such, the presence of GHE would be expected to increase somewhat the efficiency of cross-linking, thereby affecting the residual unreacted end groups that remain within the network, another factor that has been shown to be important in determining the electrical behaviour of epoxy resins.…”
Section: Conductivity Of Ghe-modified Systemsmentioning
confidence: 95%
“…In case of polyethylene, where charge transport dynamics through disordered molecular conformations has been studied in details, the presence of localized regions of free volume has been shown to be an important factor in electronic conduction. [40][41][42] Finally, the presence of GHE modifies the viscosity of the reacting system prior to vitrification; while the measured viscosity at 20 °C of the neat epoxy was 0.266±(4x10 -4 ) Pa.s, this figure was reduced to 0.101±(4x10 -4 ) Pa.s for 30GHE. As such, the presence of GHE would be expected to increase somewhat the efficiency of cross-linking, thereby affecting the residual unreacted end groups that remain within the network, another factor that has been shown to be important in determining the electrical behaviour of epoxy resins.…”
Section: Conductivity Of Ghe-modified Systemsmentioning
confidence: 95%