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Study on Micro Interfacial Charge Motion of Polyethylene Nanocomposite Based on Electrostatic Force Microscope

The interface area of nano-dielectric is generally considered to play an important role in improving dielectric properties, especially in suppressing space charge. In order to study the role of interface area on a microscopic scale, the natural charge and injected charge movement and diffusion on th...

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Autores principales: Han, Bai, Chang, Jiaxin, Song, Wei, Sun, Zhi, Yin, Chuqi, Lv, Penghao, Wang, Xuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6960587/
https://www.ncbi.nlm.nih.gov/pubmed/31818008
http://dx.doi.org/10.3390/polym11122035
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author Han, Bai
Chang, Jiaxin
Song, Wei
Sun, Zhi
Yin, Chuqi
Lv, Penghao
Wang, Xuan
author_facet Han, Bai
Chang, Jiaxin
Song, Wei
Sun, Zhi
Yin, Chuqi
Lv, Penghao
Wang, Xuan
author_sort Han, Bai
collection PubMed
description The interface area of nano-dielectric is generally considered to play an important role in improving dielectric properties, especially in suppressing space charge. In order to study the role of interface area on a microscopic scale, the natural charge and injected charge movement and diffusion on the surface of pure LDPE and SiO(2)/LDPE nanocomposite were observed and studied by gradual discharge under electrostatic force microscope (EFM). It was detected that the charge in SiO(2)/LDPE nanocomposite moved towards the interface area and was captured, which indicates that the charge was trapped in the interface area and formed a barrier to the further injection of charge and improving the dielectric performance as a result. Moreover, pulsed electro-acoustic (PEA) short-circuited test after charge injection was carried out, and the change of total charge was calculated. The trend of charge decay in the EFM test is also generally consistent with that in PEA short-circuit test and can be used to verify one another. The results revealed the law of charge movement and verified the interface area can inhibit space charge injection in nano-dielectric at the microscale, which provides an experimental reference for relevant theoretical research.
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spelling pubmed-69605872020-01-23 Study on Micro Interfacial Charge Motion of Polyethylene Nanocomposite Based on Electrostatic Force Microscope Han, Bai Chang, Jiaxin Song, Wei Sun, Zhi Yin, Chuqi Lv, Penghao Wang, Xuan Polymers (Basel) Article The interface area of nano-dielectric is generally considered to play an important role in improving dielectric properties, especially in suppressing space charge. In order to study the role of interface area on a microscopic scale, the natural charge and injected charge movement and diffusion on the surface of pure LDPE and SiO(2)/LDPE nanocomposite were observed and studied by gradual discharge under electrostatic force microscope (EFM). It was detected that the charge in SiO(2)/LDPE nanocomposite moved towards the interface area and was captured, which indicates that the charge was trapped in the interface area and formed a barrier to the further injection of charge and improving the dielectric performance as a result. Moreover, pulsed electro-acoustic (PEA) short-circuited test after charge injection was carried out, and the change of total charge was calculated. The trend of charge decay in the EFM test is also generally consistent with that in PEA short-circuit test and can be used to verify one another. The results revealed the law of charge movement and verified the interface area can inhibit space charge injection in nano-dielectric at the microscale, which provides an experimental reference for relevant theoretical research. MDPI 2019-12-09 /pmc/articles/PMC6960587/ /pubmed/31818008 http://dx.doi.org/10.3390/polym11122035 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
Han, Bai
Chang, Jiaxin
Song, Wei
Sun, Zhi
Yin, Chuqi
Lv, Penghao
Wang, Xuan
Study on Micro Interfacial Charge Motion of Polyethylene Nanocomposite Based on Electrostatic Force Microscope
title Study on Micro Interfacial Charge Motion of Polyethylene Nanocomposite Based on Electrostatic Force Microscope
title_full Study on Micro Interfacial Charge Motion of Polyethylene Nanocomposite Based on Electrostatic Force Microscope
title_fullStr Study on Micro Interfacial Charge Motion of Polyethylene Nanocomposite Based on Electrostatic Force Microscope
title_full_unstemmed Study on Micro Interfacial Charge Motion of Polyethylene Nanocomposite Based on Electrostatic Force Microscope
title_short Study on Micro Interfacial Charge Motion of Polyethylene Nanocomposite Based on Electrostatic Force Microscope
title_sort study on micro interfacial charge motion of polyethylene nanocomposite based on electrostatic force microscope
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6960587/
https://www.ncbi.nlm.nih.gov/pubmed/31818008
http://dx.doi.org/10.3390/polym11122035
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