Research on the Improvement of Epoxy Resin Surface Insulation Performance Treated by Atmospheric Pressure Ar Plasma Jet

ZUO Kun; YANG Dingge; LIU Jie; NIU Bo; SUN Haofei; SHANG Yu; WANG Lijun

doi:10.13296/j.1001-1609.hva.2020.10.018

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Research on the Improvement of Epoxy Resin Surface Insulation Performance Treated by Atmospheric Pressure Ar Plasma Jet

更新时间：2025-04-26

- Research on the Improvement of Epoxy Resin Surface Insulation Performance Treated by Atmospheric Pressure Ar Plasma Jet
- High VoltageApparatus Vol. 56, Issue 10, Pages: 111-116(2020)
- 作者机构：
  
  1. 国网陕西省电力公司
  2. 国网陕西省电力公司电力科学研究院
  3. 西安交通大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.10.018
  CLC： TM215
- Published：2020
- 稿件说明：
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[1]左坤,杨鼎革,柳杰,牛博,孙浩飞,尚宇,王立军.大气压Ar等离子体射流对环氧树脂表面绝缘性能提升研究[J].高压电器,2020,56(10):111-116.

ZUO Kun, YANG Dingge, LIU Jie, et al. Research on the Improvement of Epoxy Resin Surface Insulation Performance Treated by Atmospheric Pressure Ar Plasma Jet[J]. High voltageapparatus, 2020, 56(10): 111-116.
[1]左坤,杨鼎革,柳杰,牛博,孙浩飞,尚宇,王立军.大气压Ar等离子体射流对环氧树脂表面绝缘性能提升研究[J].高压电器,2020,56(10):111-116. DOI： 10.13296/j.1001-1609.hva.2020.10.018.

ZUO Kun, YANG Dingge, LIU Jie, et al. Research on the Improvement of Epoxy Resin Surface Insulation Performance Treated by Atmospheric Pressure Ar Plasma Jet[J]. High voltageapparatus, 2020, 56(10): 111-116. DOI： 10.13296/j.1001-1609.hva.2020.10.018.

摘要

实际运行工况下的开关柜内绝缘件受到污秽、潮湿凝露、发热和冷热循环等不利影响而逐步老化

材料表面绝缘性能不断降低

对设备安全运行造成威胁。为了提高环氧树脂（EP）表面的绝缘性能（憎水性、表面电阻率及沿面闪络电压）

基于介质阻挡放电原理

采用高压脉冲源激励产生大气压Ar等离子体射流（APPJ）处理表面涂抹二甲基硅油的环氧树脂。实验结果发现:处理后的EP表面憎水性明显增强

二甲基硅油中含Si基团由于等离子体射流中高能活性粒子作用修饰到EP表面

形成新的Si-C和Si-O化学键。同时

材料表面上的二甲基硅油阻碍了含O活性粒子接触EP表面

使含O的活性基团无法在环氧树脂表面生成。同时

由于EP表面粗糙度的上升

EP表面沿面闪络电压及表面电阻率明显上升。

Abstract

The insulation performance of insulators in switchgear weakens due to dirty aging

moisture condensation aging

cold and hot cycle aging

thermal aging under actual working conditions

which threatens the safe operation of the switchgear.In order to improve the insulation properties（hydrophobicity

surface resistivity

and flashover voltage along the surface） of the epoxy resin（EP） surface

based on the principle of dielectric barrier discharge

a high-voltage pulse source is used to excite the atmospheric pressure Ar plasma jet（APPJ） to treat the epoxy resin coated with dimethyl silicone oil on the surface.The experimental results show that the hydrophobicity of the surface of the EP after treatment is significantly enhanced.The Si-containing groups in the dimethyl silicone oil are modified to the surface of the EP due to the action of high-energy active particles in the plasma jet to form new Si-C and Si-0 chemical bonds.The dimethyl silicone oil on the surface of the material prevents the 0-containing active particles from contacting the EP surface

so that the 0-containing active groups cannot be generated on the surface of the epoxy resin.At the same time

due to the increase of EP surface roughness

the surface flashover voltage and surface resistivity of EP surface obviously increase.

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