复合绝缘子用聚烯烃材料憎水性试验及分析  

Experimental Study and Analysis on the Hydrophobicity of Polyolefin Material for Composite Insulator

作　　者：彭静[1] 赵磊 井谦[1] 张长征[1] 何远华[1] 刘志强 孔珍珍[1] PENG Jing;ZHAO Lei;JING Qian;ZHANG Changzheng;HE Yuanhua;LIU Zhiqiang;KONG Zhenzhen(Xi'an High Voltage Apparatus Research Institute Co.,Ltd.,Xi'an 710077;China Qiyuan Engineering Corporation Co.,Ltd.,Xi'an 710018,China)

机构地区：[1]西安高压电器研究院有限责任公司,西安710077 [2]中国启源工程设计研究院有限公司,西安710018

出　　处：《电瓷避雷器》2020年第5期225-230,236,共7页Insulators and Surge Arresters

摘　　要：分别研究了不同水滴体积和测量时间、喷雾次数及静置时间对聚烯烃材料表面静态接触角和HC分级的影响,并通过使用不同目数的砂纸打磨聚烯烃材料表面,研究表面粗糙度对其憎水性能的影响。结果表明:进行聚烯烃材料的憎水性试验时,采用4μL^8μL的水滴在10 s^40 s内测量其静态接触角较为准确,θs值随时间变化较小,水滴边缘接近圆形。喷雾20次~30次,在30 s内完成HC分级图像的采集较能准确评估聚烯烃材料的HC分级特性。随着表面粗糙度的增大,打磨聚烯烃材料的静态接触角平均值呈现震荡上升的变化趋势,但其HC等级逐渐降低,表明打磨破坏了聚烯烃材料表面具有憎水性的硅油层,导致其憎水性明显降低。The effects of different water droplet volume and measuring time,spray times and standing time on the static contact angle and HC classes of the polyolefin material were studied respectively in this paper. And the effect of surface roughness on the hydrophobicity of polyolefin material was investigated by sanding the polyolefin material surfaces with different amounts of sandpaper. The results show that when the hydrophobicity test of polyolefin material is carried out,the static contact angle of 4 μL ~ 8 μL water droplet is measured accurately within 10 s ~ 40 s,the θsvalue changes little with measuring time,and the edge of the water droplet is close to the circle. The HC characteristics of polyolefin materials can be accurately evaluated by spraying 20 ~ 30 times and collecting HC images within 30 seconds. With the increase of the surface roughness,the static contact angle of the polyolefin material shows an oscillatory increasing trend,but its HC classes gradually decreases,which indicates that the polishing will destroy the hydrophobic silicone oil layer on the surface of the polyolefin material,its hydrophobicity is significantly reduced.

关 键 词：聚烯烃材料 静态接触角 HC分级 水滴体积 喷雾次数 粗糙度 

分 类 号：TM216[一般工业技术—材料科学与工程]