Numerical Simulation on Charge Transport and DC Breakdown in Polyethylene-Based Micro-h-BN/Nano-SiO 2 with Filler Orientation Dependent Trap Energy

Xuri Xu, Yu Gao, Jing Li, Zheng Song, Huicun Zhao and Tao Han
Additional contact information
Xuri Xu: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Yu Gao: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Jing Li: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Zheng Song: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Huicun Zhao: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Tao Han: School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China

Energies, 2021, vol. 14, issue 15, 1-13

Abstract: In order to improve the thermal conductivity and the insulation properties of polyethylene (PE) used as cable insulation under DC stress, hexagonal boron nitride (h-BN) and inorganic particles have been considered as micro-filler and nano-filler, respectively. As a 2D material, the orientation of h-BN possibly affects the insulation properties of the polymer. It is important to understand the influence of the filler orientation on the insulation performance of the polymer. In this work, a numerical simulation has been performed to investigate the effect of orientation of micro-h-BN on charge transport and DC breakdown of PE-based micro/nano-composites and a comparison between the simulation result and previous literature data has been conducted. The h-BN was designated to be parallel, perpendicular to the normal sample surface vector (the direction of electric field in this work) or randomly distributed in the matrix, and the charge transport behavior and DC breakdown strength in the samples were discussed by using the bipolar charge transport (BCT) model. The results indicated that when the h-BN was perpendicular to the normal vector, the density of trapped charge was the largest and the DC breakdown strength was the highest among the three cases studied. It is suggested that the charge trapping/de-trapping processes and the electric field in the sample vary with the orientation of h-BN through tailoring the trap characteristics of the material.

Keywords: polyethylene; micro/nanocomposite; hexagonal boron nitride; charge transport; DC breakdown; orientation; trap characteristics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/15/4645/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/15/4645/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:15:p:4645-:d:605751

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().