空气流动性对染污高温硫化硅橡胶试品憎水迁移过程的影响

发布时间：2018-11-04 18:01

【摘要】：为了完善复合绝缘子人工污秽试验方法,研究了空气流动性对染污高温硫化(HTV)硅橡胶试品憎水迁移过程的影响。研究在人工污秽试验的基础上展开,试品被分为2组,分别放置在空气流动性相差显著的密封容器中进行干燥,通过测量污层表面液滴的静态接触角以及液滴面积等方法,对比研究了污层表面的憎水性能随迁移时间的变化过程。试验结果表明:在其他因素一致的前提条件下,迁移环境空气流动性较好时,有利于污层保持干燥,进而改善污层获取憎水性的能力;而空气流动性较差时,试品憎水迁移过程较缓慢,且污层状态易受到迁移环境波动的影响。复合绝缘子憎水迁移过程受迁移环境的影响,空气流动性是一项需要被重视的新环境因素。该研究结论可以加深对复合绝缘子憎水迁移过程的理解,同时也有助于完善复合绝缘子的人工污秽试验方法。
[Abstract]:In order to improve the artificial contamination test method of composite insulators, the effect of air fluidity on the hydrophobic migration of contaminated high-temperature vulcanized (HTV) silicone rubber was studied. The study was carried out on the basis of the artificial contamination test. The samples were divided into two groups, which were placed in sealed containers with significant difference in air fluidity for drying. The static contact angle and drop area of the droplets on the surface of the sewage layer were measured by measuring the static contact angle of the droplets and the droplet area. The variation of hydrophobicity with migration time on the surface of sewage layer was studied. The test results show that under the premise of consistent other factors, when the air mobility in the migration environment is good, it is advantageous to keep the sewage layer dry and improve the ability of the sewage layer to obtain hydrophobicity. When the air flow is poor, the hydrophobic migration process of the sample is slow, and the state of the sewage layer is easily affected by the fluctuation of the migration environment. The hydrophobic migration of composite insulators is affected by the migration environment, and air mobility is a new environmental factor that needs attention. The conclusion of this study can deepen the understanding of the hydrophobic migration process of composite insulators, and also help to improve the artificial contamination test method of composite insulators.
【作者单位】：国网北京市电力公司;清华大学深圳研究生院;中国电力科学研究院;华北油田公司水电厂;
【基金】：国家自然科学基金(51377093)~~
【分类号】：TM216

【参考文献】