等离子体改性PDMS表面的电源工况分析  

Analysis of Power Supply Conditions on Plasma-Modified Polydimethylsiloxane Surface

作　　者：刘勇智[1] 黄舜 范冰洁 马卫民 王瑶东 LIU Yongzhi;HUANG Shun;FAN Bingjie;MA Weimin;WANG Yaodong(Aviation Engineering School,Air Force Engineering University,Xi’an 710038,China;Graduate School,Air Force Engineering University,Xi’an 710038,China;Unit 94354,Jining,Shandong 272000,China)

机构地区：[1]空军工程大学航空工程学院,西安710038 [2]空军工程大学研究生院,西安710038 [3]94354部队,山东济宁272000

出　　处：《空军工程大学学报（自然科学版）》2022年第2期68-76,共9页Journal of Air Force Engineering University(Natural Science Edition)

摘　　要：配电网线路因低温恶劣环境存在覆冰问题,对供电系统可靠性产生重大危害,使用疏水薄膜或涂层能有效预防覆冰。高效低成本制备适配线路的疏水涂层是一个实用课题。利用He(Ar)/CH4/C4F8混合气体,等离子体改性聚二甲基硅氧烷(PDMS)制备疏水表面,该表面可包裹线路外层提供疏水性能。研究放电电压等级、放电极间距、放电时间和放电频率对等离子体改性制备疏水表面的影响。利用COMSOL软件分析PDMS微通道电场强度分布,探究等离子体分布情况。基于仿真结果,设计实物实验,通过测量PDMS改性表面接触角、粗糙度和表面形貌成分,以及拍摄气体放电图像,验证与分析了各因素作用机理。最后,选择合适工况成功制备符合预期的PDMS疏水表面,并测试其具有良好稳定性。Due to low temperature and harsh environment,there is ice coating problem in distribution network lines,which has great harm to the reliability of power supply system.Hydrophobic film or coating can be used to effectively prevent the ice coating problem.Preparation of hydrophobic coatings for adaptive circuits with high efficiency and low cost is a practical subject.A hydrophobic surface was prepared by plasma modification of polydimethylsiloxane(PDMS)with mixed gas of He(Ar)/CH4/C4F8.The surface can cover the outer layer of the circuit to provide hydrophobic properties.The effects of discharge voltage level,distance between discharge electrodes,discharge time and discharge frequency on the preparation of hydrophobic surface modified by plasma were studied.COMSOL software was used to analyze the electric field intensity distribution of PDMS microchannel and explore the distribution of plasma.Based on the simulation results,physical experiments were designed to verify and analyze the mechanism of each factor by measuring the contact angle,roughness and surface topography of PDMS modified surface and taking gas discharge images.Finally,suitable conditions were selected to successfully prepare the PDMS hydrophobic surface in line with expectations,and its good stability was tested.

关 键 词：供电网覆冰问题 PDMS 疏水性表面 等离子体改性 场强分布 

分 类 号：TM89[电气工程—高电压与绝缘技术]