Cargando…

Polarization and Trap Characteristics Modification of Oil-Impregnated Paper Insulation by TiO(2) Nanoparticles

Polarization and traps determine the electrical property of oil-paper insulation, but most attention has been paid to the modification of insulating oil with nanoparticles, so there are is little research about oil-impregnated paper, and the origin for performance variation is not understood yet. In...

Descripción completa

Detalles Bibliográficos
Autores principales: Huang, Meng, Ying, Yupeng, Shan, Bingliang, Lv, Yuzhen, Li, Chengrong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6410272/
https://www.ncbi.nlm.nih.gov/pubmed/30708942
http://dx.doi.org/10.3390/nano9020174
_version_ 1783402208976437248
author Huang, Meng
Ying, Yupeng
Shan, Bingliang
Lv, Yuzhen
Li, Chengrong
author_facet Huang, Meng
Ying, Yupeng
Shan, Bingliang
Lv, Yuzhen
Li, Chengrong
author_sort Huang, Meng
collection PubMed
description Polarization and traps determine the electrical property of oil-paper insulation, but most attention has been paid to the modification of insulating oil with nanoparticles, so there are is little research about oil-impregnated paper, and the origin for performance variation is not understood yet. In this paper, spherical nanoscale titanium dioxide was prepared by the hydrolysis method and nanofluid-impregnated paper (NP) was fabricated through oil-impregnation. The frequency domain spectrum was measured for polarization analysis, and both thermally stimulated depolarization current (TSDC) and isothermal surface potential decay (ISPD) methods were used to reveal trap parameters. Results show that NP’s low frequency permittivity is much larger, and another peak appears in the spectrum even though the content of nanoparticles is very low. With the addition of TiO(2) nanoparticles, TSDC’s amplitude and peak temperature increase, and the trap energy becomes shallower. TiO(2) nanoparticles’ strong polarization and high activation energy contribute to NP’s larger interface polarization intensity and activation energy. Furthermore, because of oxygen vacancies, TiO(2) nanoparticles offer a transfer site for holes and electrons to escape from deep traps; thus, the trap energy is greatly reduced.
format Online
Article
Text
id pubmed-6410272
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-64102722019-03-29 Polarization and Trap Characteristics Modification of Oil-Impregnated Paper Insulation by TiO(2) Nanoparticles Huang, Meng Ying, Yupeng Shan, Bingliang Lv, Yuzhen Li, Chengrong Nanomaterials (Basel) Article Polarization and traps determine the electrical property of oil-paper insulation, but most attention has been paid to the modification of insulating oil with nanoparticles, so there are is little research about oil-impregnated paper, and the origin for performance variation is not understood yet. In this paper, spherical nanoscale titanium dioxide was prepared by the hydrolysis method and nanofluid-impregnated paper (NP) was fabricated through oil-impregnation. The frequency domain spectrum was measured for polarization analysis, and both thermally stimulated depolarization current (TSDC) and isothermal surface potential decay (ISPD) methods were used to reveal trap parameters. Results show that NP’s low frequency permittivity is much larger, and another peak appears in the spectrum even though the content of nanoparticles is very low. With the addition of TiO(2) nanoparticles, TSDC’s amplitude and peak temperature increase, and the trap energy becomes shallower. TiO(2) nanoparticles’ strong polarization and high activation energy contribute to NP’s larger interface polarization intensity and activation energy. Furthermore, because of oxygen vacancies, TiO(2) nanoparticles offer a transfer site for holes and electrons to escape from deep traps; thus, the trap energy is greatly reduced. MDPI 2019-01-31 /pmc/articles/PMC6410272/ /pubmed/30708942 http://dx.doi.org/10.3390/nano9020174 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Huang, Meng
Ying, Yupeng
Shan, Bingliang
Lv, Yuzhen
Li, Chengrong
Polarization and Trap Characteristics Modification of Oil-Impregnated Paper Insulation by TiO(2) Nanoparticles
title Polarization and Trap Characteristics Modification of Oil-Impregnated Paper Insulation by TiO(2) Nanoparticles
title_full Polarization and Trap Characteristics Modification of Oil-Impregnated Paper Insulation by TiO(2) Nanoparticles
title_fullStr Polarization and Trap Characteristics Modification of Oil-Impregnated Paper Insulation by TiO(2) Nanoparticles
title_full_unstemmed Polarization and Trap Characteristics Modification of Oil-Impregnated Paper Insulation by TiO(2) Nanoparticles
title_short Polarization and Trap Characteristics Modification of Oil-Impregnated Paper Insulation by TiO(2) Nanoparticles
title_sort polarization and trap characteristics modification of oil-impregnated paper insulation by tio(2) nanoparticles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6410272/
https://www.ncbi.nlm.nih.gov/pubmed/30708942
http://dx.doi.org/10.3390/nano9020174
work_keys_str_mv AT huangmeng polarizationandtrapcharacteristicsmodificationofoilimpregnatedpaperinsulationbytio2nanoparticles
AT yingyupeng polarizationandtrapcharacteristicsmodificationofoilimpregnatedpaperinsulationbytio2nanoparticles
AT shanbingliang polarizationandtrapcharacteristicsmodificationofoilimpregnatedpaperinsulationbytio2nanoparticles
AT lvyuzhen polarizationandtrapcharacteristicsmodificationofoilimpregnatedpaperinsulationbytio2nanoparticles
AT lichengrong polarizationandtrapcharacteristicsmodificationofoilimpregnatedpaperinsulationbytio2nanoparticles