Home Journals Articles Updates About
CN
image
收藏切换
Comparative study on surface modification of two types of epoxy resins: charge accumulation suppression and flashover performance improvement
收藏切换
PDF
Zhifei YANG1, Manling DONG1, Zhenyu ZHAN1, Xin WANG2, Hanbo ZHENG3, Zhenlian AN2
Insulating Materials | 2025, 58(7) : 136 - 142
Less
收藏切换
Insulating Materials | 2025, 58(7): 136-142
• Insulation Technology •
Comparative study on surface modification of two types of epoxy resins: charge accumulation suppression and flashover performance improvement
Full
Zhifei YANG1, Manling DONG1, Zhenyu ZHAN1, Xin WANG2, Hanbo ZHENG3, Zhenlian AN2
Affiliations
  • 1. State Grid Henan Province Electric Power Corporation Research Institute, Zhengzhou 450099, China
  • 2. Department of Electrical Engineering, Tongji University, Shanghai 201804, China
  • 3. College of Electrical Engineering, Guangxi University, Nanning 530004, China
Published: 2025-07-20 doi: 10.16790/j.cnki.1009-9239.im.2025.07.016
Outline
收藏切换

In order to suppress surface charge accumulation on the insulation in HVDC wall bushings and improve their flashover performance, the epoxy resins used for the supporting insulator and the tube body were surface fluorinated under the same conditions using a fluorine/nitrogen mixture. The results show that fluorine atoms are introduced into the surface layers of two types of epoxy resins by the substitution for hydrogen atoms and the addition to carbon-carbon double bonds, forming C-F bonds. The fluorination is accompanied by chain breaking, which mainly occurs at the crosslinking sites. Due to the difference in epoxy value, two types of epoxy resins show different crosslinking densities. SEM imaging shows that they have different thicknesses of the fluorinated layer and surface morphologies. Surface potential decay and surface conductivity measurements reveal that the fluorination increases surface conductivity of two types of epoxy resins and inhibits their surface charge accumulation to different degrees. Flashover tests show that their DC flashover voltages are significantly increased by the fluorination to almost the same degree.

epoxy resin  /  epoxy value  /  direct fluorination  /  surface physicochemical characteristics  /  surface electrical properties  /  surface charge accumulation  /  DC flashover
Zhifei YANG, Manling DONG, Zhenyu ZHAN, Xin WANG, Hanbo ZHENG, Zhenlian AN. Comparative study on surface modification of two types of epoxy resins: charge accumulation suppression and flashover performance improvement[J]. Insulating Materials, 2025 , 58 (7) : 136 -142 . DOI: 10.16790/j.cnki.1009-9239.im.2025.07.016
Appendix
Less
Year 2025 volume 58 Issue 7
PDF
221
99
Cite this Article
BibTeX
Article Info
doi: 10.16790/j.cnki.1009-9239.im.2025.07.016
  • Receive Date：2024-09-29
  • Online Date：2025-10-29
  • Published：2025-07-20
Article Data
Affiliations
History
  • Received：2024-09-29
  • Revised：2024-11-03
Affiliations
    1. State Grid Henan Province Electric Power Corporation Research Institute, Zhengzhou 450099, China
    2. Department of Electrical Engineering, Tongji University, Shanghai 201804, China
    3. College of Electrical Engineering, Guangxi University, Nanning 530004, China
References
Share
https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2025.07.016
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House