含憎水性成分的二维射流阵列放电特性及表面改性研究

发布时间：2019-07-08 16:10

【摘要】：提高绝缘材料表面憎水性可有效抑制电力系统中污闪、湿闪发生,对保障电力系统设备的稳定可靠运行具有重要意义。针对大面积绝缘材料表面处理需求,该文将单管射流进行扩展,设计二维蜂巢状射流阵列电极结构,在Ar中带入三甲基硅烷(TMS)引入憎水性成分来产生含憎水性成分的二维射流阵列放电。论文诊断了TMS/Ar混合气体射流阵列的电学特性、光学特性并计算得到相关放电参量,研究了TMS含量对放电特性的影响。在此基础上,利用所得到的稳定射流阵列对典型绝缘材料环氧进行憎水性表面改性,研究了TMS含量和处理时间对改性效果的影响,并对改性条件进行优化。结果表明:随着TMS含量增加,阵列放电强度减弱,放电功率和传输电荷以及相关粒子等均呈减小趋势。TMS含量为0.04%时,放电电流为75mA,传输电荷与放电功率分别为1617nC、86.75W,在此条件下对环氧材料进行改性效果最优,经过180s处理后,环氧表面水接触角由处理前的42°提高至最大值118°。
文内图片：

图片说明：不同TMS含量时的射流阵列的发光图像
[Abstract]:The improvement of the hydrophobicity of the surface of the insulating material can effectively inhibit the pollution flashover and the wet flash in the power system, and is of great significance for ensuring the stable and reliable operation of the power system equipment. In order to meet the surface treatment requirement of large-area insulating material, the single-tube jet is expanded to design a two-dimensional honeycomb-like jet array electrode structure, and the hydrophobic component is introduced into the Ar to generate a two-dimensional jet array discharge containing the hydrophobic component. In this paper, the electrical properties and optical properties of a TMS/ Ar mixed gas jet array are diagnosed, and the related discharge parameters are calculated, and the effect of TMS content on the discharge characteristics is studied. On this basis, the effect of TMS content and treatment time on the modification effect was studied, and the modification conditions were optimized. The results show that, with the increase of the content of TMS, the discharge intensity of the array is weakened, and the discharge power and the transmission charge and the related particles are all decreasing. When the content of TMS is 0.04%, the discharge current is 75 mA, the transfer charge and the discharge power are 1617nC and 86.75W, respectively, and the modified effect on the epoxy material under this condition is the best. After the 180 s treatment, the water contact angle of the epoxy surface is raised from 42 掳 before the treatment to the maximum value of 118 掳.
【作者单位】：南京工业大学电气工程与控制科学学院;
【基金】：国家自然科学基金项目(51377075)~~
【分类号】：TM21

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