Electrical tree characteristics of epoxy resin under AC voltage at 77 K

Wang, YG; Huang, Rongjin; Li, Chuanyang; Zhang, Chi; Shen, Fei; Li, Jian; Dong, Hongyu; Zhang, Hua; Zhang, Hengcheng; Li, Laifeng

doi:10.1016/j.cryogenics.2019.04.005

Cited by 11 publications

(1 citation statement)

References 32 publications

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“…This is an important phenomenon for studying the long-term breakdown of solid insulation. The electrical tree in epoxy resin conducted with high voltages under 50 Hz alternating current (AC) voltage has been widely and extensively studied [1][2][3]. Epoxy is one of the most important engineering thermoset plastics with excellent mechanical and heat resistance properties, which is widely employed as a matrix in the composites of electromagnetic shielding material, flame resistant material, and structural material [4].…”

Section: Introductionmentioning

confidence: 99%

Graphene Nanoplatelets Effect on Electrical Tree Inhibition in Epoxy Resin Insulator

Khaibuth

Suksri

2022

KEM

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Epoxy resin is widely used in high voltage insulator material because of its high dielectric strength. Electrical tree phenomena are one of an electrical insulation degradation. It is easily initiated due to the distorted high electrical field. In this study, graphene nanoplatelets (GNPs) with the contents of 0.003-0.010 wt.% (2.6-8.8 mg) were filled into epoxy resin to improve electrical tree inhibiting ability. Treeing experiments were conducted at a fixed voltage of 15 kV, 50 Hz. LCD digital microscope was used to observe the electrical tree inhibition of GNPs in epoxy resin. The digital image of insulators sample was then analyzed by MATLAB program. The percentage of electrical tree damages of GNPs content of 0.007 wt.% was found at 2.75 %. Experimental results showed that electrical tree has propagated from main branch tree to many small branches. The distributed electrical tree around the main branches occurred after the addition of GNPs. Filling GNPs content of 0.005 wt.% will result to a complex branch tree structure with much longer branches than others. Nevertheless, the average tree length was inhibited at the GNPs filling contents of 0.003 to 0.007 wt.%.

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Section: Introductionmentioning

confidence: 99%

Graphene Nanoplatelets Effect on Electrical Tree Inhibition in Epoxy Resin Insulator

Khaibuth

Suksri

2022

KEM

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Electrical Tree Performance in Epoxy Resin under Low-Frequency Bipolar Square- Wave Voltage

Zhang

Fu²,

Xing

et al. 2022

J. Electron. Mater.

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Epoxy-based high-k composite vitrimer: With low dielectric loss, high breakdown strength and surface electrical damage repairability

Zhang

Zhao

et al. 2023

Chemical Engineering Journal

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Electrical tree characteristics of epoxy resin under AC voltage at 77 K

Cited by 11 publications

References 32 publications

Graphene Nanoplatelets Effect on Electrical Tree Inhibition in Epoxy Resin Insulator

Graphene Nanoplatelets Effect on Electrical Tree Inhibition in Epoxy Resin Insulator

Electrical Tree Performance in Epoxy Resin under Low-Frequency Bipolar Square- Wave Voltage

Epoxy-based high-k composite vitrimer: With low dielectric loss, high breakdown strength and surface electrical damage repairability

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Electrical tree characteristics of epoxy resin under AC voltage at 77 K

Cited by 11 publications

References 32 publications

Graphene Nanoplatelets Effect on Electrical Tree Inhibition in Epoxy Resin Insulator

Graphene Nanoplatelets Effect on Electrical Tree Inhibition in Epoxy Resin Insulator

Electrical Tree Performance in Epoxy Resin under Low-Frequency Bipolar Square- Wave Voltage

Epoxy-based high-k composite vitrimer: With low dielectric loss, high breakdown strength and surface electrical damage repairability

Contact Info

Product

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About

Electrical tree characteristics of epoxy resin under AC voltage at 77 K