TY - GEN
T1 - Electric Field Assisted Transport of the Crosslinking Byproducts in Low-Density Polyethylene
AU - Hamedi, H.
AU - Walker, R. C.
AU - Rajagopalan, R.
AU - Furman, E.
AU - Lanagan, M.
AU - Woodward, W. H.Hunter
N1 - Funding Information:
The authors would like to thank the Dow Chemical Inc. for supporting this study and the technical staff of the Electrical Characterization Lab and Material Characterization Lab (MCL) at Penn State Material Research Institute (MRI) for their assist in experiments and characterization.
Publisher Copyright:
© 2019 IEEE.
PY - 2019/10
Y1 - 2019/10
N2 - The intrinsic diffusion of the acetophenone in low density polyethylene (LDPE) is characterized with infrared mapping and it is found to be nearly Fickean with decaying diffusion coefficient over time. The impact of temperature on the diffusion coefficient is examined and an Arrhenius relationship is derived for the temperature dependence. To study the influence of electric field on the acetophenone diffusion, field-test cells were designed and constructed. The infrared mapping revealed presence of a gradient in the acetophenone concentration. Using the COMSOL simulation, we observed the higher acetophenone concentration near high electric field gradient regions. This is attributed to the dielectrophoresis phenomenon that occurs due to higher permittivity of the acetophenone molecules compared to the surrounding medium. The findings of this study help to understand where the byproducts migrate in high voltage power cables.
AB - The intrinsic diffusion of the acetophenone in low density polyethylene (LDPE) is characterized with infrared mapping and it is found to be nearly Fickean with decaying diffusion coefficient over time. The impact of temperature on the diffusion coefficient is examined and an Arrhenius relationship is derived for the temperature dependence. To study the influence of electric field on the acetophenone diffusion, field-test cells were designed and constructed. The infrared mapping revealed presence of a gradient in the acetophenone concentration. Using the COMSOL simulation, we observed the higher acetophenone concentration near high electric field gradient regions. This is attributed to the dielectrophoresis phenomenon that occurs due to higher permittivity of the acetophenone molecules compared to the surrounding medium. The findings of this study help to understand where the byproducts migrate in high voltage power cables.
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U2 - 10.1109/CEIDP47102.2019.9009729
DO - 10.1109/CEIDP47102.2019.9009729
M3 - Conference contribution
AN - SCOPUS:85081678622
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
SP - 430
EP - 433
BT - 2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019
Y2 - 20 October 2019 through 23 October 2019
ER -