摘要
等离子体射流处理能够提高染污硅橡胶材料表面憎水性,在电力行业中具有广阔的应用前景。为提高处理效果,利用大气压He等离子体射流对重污秽度染污硅橡胶表面进行处理,对射流长度、气体温度、发射光谱等射流特性进行了诊断,研究了放电功率、处理时间等参数对提高染污硅橡胶憎水性及憎水迁移性的影响。实验结果表明,射流长度最大能达到46 mm,气体温度介于297~345 K之间,放电产生了大量激发态He、OH、N_2^+等活性粒子;射流处理能显著提高染污硅橡胶表面憎水性,对于灰密为1.5 mg/cm^2的重污秽度染污硅橡胶,最少处理30 s就可使静态接触角达到饱和状态,增大放电功率可以显著加速迁移过程。
Improving the hydrophobicity of contaminated silicone rubber by plasma jet treatment is of great significance to avoiding the risk of pollution flashover in the electric power industry. In this paper, the heavily contaminated silicone rubber surfaces were treated by using plasma jet in He generated at atmospheric pressure air, and the length of plasma jet, gas temperature, and optical emission spectrum were characterized. Effects of the processing time and discharge power on the hydrophobicity improvement were studied and the hydrophobicity transfer process was investigated. Results show that the jet can reach the maximum length of 46 ram, the gas temperature is in the range of 297-345 K, and the discharge produces a lot of active particles in excited state such as He, OH and N^2＋. After plasma jet treatment, the surface hydrophobicity can increase remarkably, and the static contact angle can reach saturation in 30 seconds. Increasing the discharge power can significantly accelerate the migration process.
作者
张若兵
夏衍
周新磊
廖一帆
张福增
ZHANG Ruobing;XIA Yan;ZHOU Xinlei;LIAO Yifan;ZHANG Fuzeng(Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China;Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510080, China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2017年第12期3988-3993,共6页
High Voltage Engineering
基金
国家自然科学基金(51677105)
特高压工程技术(昆明
广州)国家工程实验室开放基金~~
关键词
等离子体射流
染污硅橡胶
重污秽度
憎水性
憎水迁移性
静态接触角
plasma jet
contaminated silicon rubber
heavily contaminated
hydrophobicity
hydrophobicity transfer
static contact angle
