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The Effects of Aluminum-Nitride Nano-Fillers on the Mechanical, Electrical, and Thermal Properties of High Temperature Vulcanized Silicon Rubber for High-Voltage Outdoor Insulator Applications

AlN nanoparticles were added into commercial high-temperature-vulcanized silicon rubber composites, which were designed for high-voltage outdoor insulator applications. The composites were systematically studied with respect to their mechanical, electrical, and thermal properties. The thermal conduc...

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Autores principales: Liu, Chang, Xu, Yiwen, Bi, Daoguang, Luo, Bing, Zhang, Fuzeng, Wang, Tingting, Yao, Yingbang, Lu, Shengguo, Xu, Wenrong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862222/
https://www.ncbi.nlm.nih.gov/pubmed/31671629
http://dx.doi.org/10.3390/ma12213562
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author Liu, Chang
Xu, Yiwen
Bi, Daoguang
Luo, Bing
Zhang, Fuzeng
Wang, Tingting
Yao, Yingbang
Lu, Shengguo
Xu, Wenrong
author_facet Liu, Chang
Xu, Yiwen
Bi, Daoguang
Luo, Bing
Zhang, Fuzeng
Wang, Tingting
Yao, Yingbang
Lu, Shengguo
Xu, Wenrong
author_sort Liu, Chang
collection PubMed
description AlN nanoparticles were added into commercial high-temperature-vulcanized silicon rubber composites, which were designed for high-voltage outdoor insulator applications. The composites were systematically studied with respect to their mechanical, electrical, and thermal properties. The thermal conductivity was found to increase greatly (>100%) even at low fractions of the AlN fillers. The electrical breakdown strength of the composites was not considerably affected by the AlN filler, while the dielectric constants and dielectric loss were found to be increased with AlN filler ratios. At higher doping levels above 5 wt% (~2.5 vol%), electrical tracking performance was improved. The AlN filler increased the tensile strength as well as the hardness of the composites, and decreased their flexibility. The hydrophobic properties of the composites were also studied through the measurements of temperature-dependent contact angle. It was shown that at a doping level of 1 wt%, a maximum contact angle was observed around 108°. Theoretical models were used to explain and understand the measurement results. Our results show that the AlN nanofillers are helpful in improving the overall performances of silicon rubber composite insulators.
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spelling pubmed-68622222019-12-05 The Effects of Aluminum-Nitride Nano-Fillers on the Mechanical, Electrical, and Thermal Properties of High Temperature Vulcanized Silicon Rubber for High-Voltage Outdoor Insulator Applications Liu, Chang Xu, Yiwen Bi, Daoguang Luo, Bing Zhang, Fuzeng Wang, Tingting Yao, Yingbang Lu, Shengguo Xu, Wenrong Materials (Basel) Article AlN nanoparticles were added into commercial high-temperature-vulcanized silicon rubber composites, which were designed for high-voltage outdoor insulator applications. The composites were systematically studied with respect to their mechanical, electrical, and thermal properties. The thermal conductivity was found to increase greatly (>100%) even at low fractions of the AlN fillers. The electrical breakdown strength of the composites was not considerably affected by the AlN filler, while the dielectric constants and dielectric loss were found to be increased with AlN filler ratios. At higher doping levels above 5 wt% (~2.5 vol%), electrical tracking performance was improved. The AlN filler increased the tensile strength as well as the hardness of the composites, and decreased their flexibility. The hydrophobic properties of the composites were also studied through the measurements of temperature-dependent contact angle. It was shown that at a doping level of 1 wt%, a maximum contact angle was observed around 108°. Theoretical models were used to explain and understand the measurement results. Our results show that the AlN nanofillers are helpful in improving the overall performances of silicon rubber composite insulators. MDPI 2019-10-30 /pmc/articles/PMC6862222/ /pubmed/31671629 http://dx.doi.org/10.3390/ma12213562 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
Liu, Chang
Xu, Yiwen
Bi, Daoguang
Luo, Bing
Zhang, Fuzeng
Wang, Tingting
Yao, Yingbang
Lu, Shengguo
Xu, Wenrong
The Effects of Aluminum-Nitride Nano-Fillers on the Mechanical, Electrical, and Thermal Properties of High Temperature Vulcanized Silicon Rubber for High-Voltage Outdoor Insulator Applications
title The Effects of Aluminum-Nitride Nano-Fillers on the Mechanical, Electrical, and Thermal Properties of High Temperature Vulcanized Silicon Rubber for High-Voltage Outdoor Insulator Applications
title_full The Effects of Aluminum-Nitride Nano-Fillers on the Mechanical, Electrical, and Thermal Properties of High Temperature Vulcanized Silicon Rubber for High-Voltage Outdoor Insulator Applications
title_fullStr The Effects of Aluminum-Nitride Nano-Fillers on the Mechanical, Electrical, and Thermal Properties of High Temperature Vulcanized Silicon Rubber for High-Voltage Outdoor Insulator Applications
title_full_unstemmed The Effects of Aluminum-Nitride Nano-Fillers on the Mechanical, Electrical, and Thermal Properties of High Temperature Vulcanized Silicon Rubber for High-Voltage Outdoor Insulator Applications
title_short The Effects of Aluminum-Nitride Nano-Fillers on the Mechanical, Electrical, and Thermal Properties of High Temperature Vulcanized Silicon Rubber for High-Voltage Outdoor Insulator Applications
title_sort effects of aluminum-nitride nano-fillers on the mechanical, electrical, and thermal properties of high temperature vulcanized silicon rubber for high-voltage outdoor insulator applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862222/
https://www.ncbi.nlm.nih.gov/pubmed/31671629
http://dx.doi.org/10.3390/ma12213562
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