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Effect of Na+ on molecular relaxation of epoxy/alumina resin composites
编号：192 访问权限：仅限参会人 更新：2021-12-03 10:46:23 浏览：664次 口头报告

报告开始：2021年12月16日 09:45（Asia/Shanghai）

报告时间：15min

所在会场：[D] High voltage and insulation technology [D3] Session 16

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摘要
Abstract – Epoxy resin is an insulating material widely used in high-voltage electrical equipment, and Na+ is one of the main impurity ions in epoxy resin. In this research, we added different mass fraction Na+ into epoxy/alumina composites. After that, we measured the gel time, glass transition temperature and broadband dielectric spectrum. Besides, we used H-N function to fit the data of dielectric spectrum,used VFT function to calculate the activation energy of macromolecular chains. The gel time data showed that Na+ can promote the gelation of epoxy composite castables. The glass transition temperature proved that Na+ can promote crosslinking. The calculation results of dielectric fitting showed that Na+ can increase the activation energy of macromolecular chains and increases the intensity of ion ionization. This research reveal the effect of Na+ on molecular relaxation in epoxy composites and provide reference for the control of Na+ content in epoxy composites.
 
This work was supported by Science and Technology Project of SGCC Project Numbers (5500-201958322A-0-0-00)
Yafang Gao, State Key Laboratory of Electrical Insulation and Power Equipment, Xi`an Jiaotong University Xi`an, China. (Email: 979088042@qq.com)
Mingru Li, State Key Laboratory of Electrical Insulation and Power Equipment, Xi`an Jiaotong University Xi`an, China. (Email: 549675145@qq.com)
Shengtao Li*, State Key Laboratory of Electrical Insulation and Power Equipment, Xi`an Jiaotong University Xi`an, China. (Email:sli@mail.xjtu.edu.cn)
Kun Wang,State Key Laboratory of Advanced Power Transmission Technology Global Energy Interconnection Research Institute Co., Ltd Beijing, China wangkun278@163.com
关键词
composite insulation materials; dielectric properties; epoxy resin; impurity ions; Molecular chain
报告人
Yafang Gao
Xi'An Jiaotong University

稿件作者
Yafang Gao Xi'An Jiaotong University
Mingru Li Xi'an Jiaotong University
Shengtao Li Xi'an Jiaotong University
Wang Kun Global Energy Interconnection Research Institute
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重要日期

  • 会议日期

    07月11日

    2023

    至

    08月18日

    2023

  • 11月10日 2021

    初稿截稿日期

  • 12月10日 2021

    注册截止日期

  • 12月11日 2021

    报告提交截止日期

主办单位
IEEE IAS
承办单位
IEEE IAS Student Chapter of Southwest Jiaotong University (SWJTU)
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
IEEE PELS (Power Electronics Society) Student Chapter of HUST
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