介质阻挡电晕放电用于聚丙烯薄膜的表面改性

发布时间：2018-03-24 23:22

本文选题：低温等离子体　切入点：介质阻挡电晕放电　出处：《高电压技术》2014年07期

【摘要】：聚丙烯薄膜浸渍特性是电力电容器的关键问题之一。为了改善聚丙烯薄膜的浸渍特性,采用低温等离子体技术对薄膜表面进行了改性研究。首先基于介质阻挡电晕放电原理制作了低温等离子体发生装置,研究了其放电的电学特性。然后利用该装置产生低温等离子体,应用于聚丙烯薄膜的材料表面改性处理。通过测量材料表面处理前后的表面化学元素、微观形貌和表面静态水接触角的变化,分析了等离子体处理对材料表面改性的影响。结果表明:聚丙烯薄膜经过等离子体改性处理后,表面的极性含氧基团数量增加到10%,静态接触角降低了30%,材料表面粗糙度和浸渍特性都有较大提高;其电学特性也发生了变化,处理之后聚丙烯薄膜的交流击穿电压提高了约12%。
[Abstract]:The impregnation characteristic of polypropylene film is one of the key problems of power capacitor. The surface modification of thin films was studied by low temperature plasma technology. Firstly, a low temperature plasma generator was made based on the dielectric barrier corona discharge principle. The electrical properties of the material were studied. Then the low temperature plasma was produced by the device, which was applied to the surface modification of polypropylene film. The surface chemical elements before and after the surface treatment were measured. The influence of plasma treatment on the surface modification of polypropylene film was analyzed with the change of micromorphology and surface static water contact angle. The number of polar oxygen-containing groups on the surface increases to 10, the static contact angle decreases by 30%, the surface roughness and the impregnation property of the material are improved greatly, and the electrical properties are changed. After treatment, the AC breakdown voltage of the polypropylene film is increased by about 12%.
【作者单位】：西安交通大学电力设备电气绝缘国家重点实验室;特高压工程技术(昆明广州)国家工程实验室;
【基金】：国家自然科学基金(51107096) 特高压工程技术(昆明、广州)国家工程实验室开放基金(NEL201303)~~
【分类号】：TM531.4

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