Cargando…

Investigation of the Propagation of Electrical Trees in a Polymer Matrix in the Corona Condition

In a corona environment, the initiation and propagation of electrical trees in a polymer matrix originate from the field enhancement effect. Driven by the macroscopic alternating electric field, a weak alternating current (AC) was passed through the decomposition channel of an electrical tree, and a...

Descripción completa

Detalles Bibliográficos
Autores principales: Shang, Chunyu, Sun, Hui, Hao, Yongqin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403619/
https://www.ncbi.nlm.nih.gov/pubmed/30960909
http://dx.doi.org/10.3390/polym10090984
_version_ 1783400654879850496
author Shang, Chunyu
Sun, Hui
Hao, Yongqin
author_facet Shang, Chunyu
Sun, Hui
Hao, Yongqin
author_sort Shang, Chunyu
collection PubMed
description In a corona environment, the initiation and propagation of electrical trees in a polymer matrix originate from the field enhancement effect. Driven by the macroscopic alternating electric field, a weak alternating current (AC) was passed through the decomposition channel of an electrical tree, and a small amount of alternating electric quantity was present on the tip of the electrical tree, resulting in an enhanced local electric field around the tip of the electrical tree. The emissions of electrons accelerated in the enhanced local electric field resulted in the decomposition of the polymer material, stimulating the propagation of the electrical tree. When inorganic nano-particles with high corona resistibility were introduced into the polymer matrix, the nano-particles were aggregately deposited as the polymer material decomposed. The decomposition channel of the electrical tree was blocked and the current passing through the decomposition channel was shut off, eliminating the enhanced local electric field. As a result, the propagation of electrical trees was restrained and an improved corona resistibility was achieved for the polymer/nano-particles composite material.
format Online
Article
Text
id pubmed-6403619
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-64036192019-04-02 Investigation of the Propagation of Electrical Trees in a Polymer Matrix in the Corona Condition Shang, Chunyu Sun, Hui Hao, Yongqin Polymers (Basel) Article In a corona environment, the initiation and propagation of electrical trees in a polymer matrix originate from the field enhancement effect. Driven by the macroscopic alternating electric field, a weak alternating current (AC) was passed through the decomposition channel of an electrical tree, and a small amount of alternating electric quantity was present on the tip of the electrical tree, resulting in an enhanced local electric field around the tip of the electrical tree. The emissions of electrons accelerated in the enhanced local electric field resulted in the decomposition of the polymer material, stimulating the propagation of the electrical tree. When inorganic nano-particles with high corona resistibility were introduced into the polymer matrix, the nano-particles were aggregately deposited as the polymer material decomposed. The decomposition channel of the electrical tree was blocked and the current passing through the decomposition channel was shut off, eliminating the enhanced local electric field. As a result, the propagation of electrical trees was restrained and an improved corona resistibility was achieved for the polymer/nano-particles composite material. MDPI 2018-09-04 /pmc/articles/PMC6403619/ /pubmed/30960909 http://dx.doi.org/10.3390/polym10090984 Text en © 2018 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
Shang, Chunyu
Sun, Hui
Hao, Yongqin
Investigation of the Propagation of Electrical Trees in a Polymer Matrix in the Corona Condition
title Investigation of the Propagation of Electrical Trees in a Polymer Matrix in the Corona Condition
title_full Investigation of the Propagation of Electrical Trees in a Polymer Matrix in the Corona Condition
title_fullStr Investigation of the Propagation of Electrical Trees in a Polymer Matrix in the Corona Condition
title_full_unstemmed Investigation of the Propagation of Electrical Trees in a Polymer Matrix in the Corona Condition
title_short Investigation of the Propagation of Electrical Trees in a Polymer Matrix in the Corona Condition
title_sort investigation of the propagation of electrical trees in a polymer matrix in the corona condition
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403619/
https://www.ncbi.nlm.nih.gov/pubmed/30960909
http://dx.doi.org/10.3390/polym10090984
work_keys_str_mv AT shangchunyu investigationofthepropagationofelectricaltreesinapolymermatrixinthecoronacondition
AT sunhui investigationofthepropagationofelectricaltreesinapolymermatrixinthecoronacondition
AT haoyongqin investigationofthepropagationofelectricaltreesinapolymermatrixinthecoronacondition