多针-平板介质阻挡放电提高玻璃表面憎水性的研究  

Research on improving hydrophobicity of glass surface using multineedle-to-plane electrode dielectric barrier discharge treatment

作　　者：方志[1] 王辉[2] 邱毓昌[2] 

机构地区：[1]南京工业大学自动化学院,南京210009 [2]西安交通大学电力设备电气绝缘国家重点实验室,西安710049

出　　处：《绝缘材料》2005年第4期23-26,31,共5页Insulating Materials

摘　　要：用大气压空气中多针-平板电极结构的DBD对玻璃表面进行憎水性改性。通过测量水接触角、表面电阻和湿闪电压等研究了这两种形式DBD产生的等离子体处理前后玻璃的表面特性以及处理电压和处理时间对改性效果的影响,结果表明:在玻璃表面涂一层二甲基硅油并经等离子体处理后,能在玻璃表面生成一层长效、致密的憎水膜。随处理电压和处理时间的不同,改性效果不同,当处理电压10kV、处理时间8min时提高憎水性效果最明显。Surface treatment of a glass surface for improving hydrophobicity using the non-thermal plasma generated by a multineedle to-plane electrode arrangement dielectric barrier discharge （DBD） at atmospheric pressure is conducted, and the surface properties of the glass before and after the DBD treatment are studied using contact angle measurement, surface resistance measurement and wet flashover voltage tests. The effects of the applied voltage and time duration of these two discharges on the surface modification are studied, and the optimal conditions for the treatment are obtained. It is found that a layer of hydrophobic coating is formed on the glass surface after spraying a thin layer of silicone oil and undergoing the DBD treatment, and the improvement of hydrophobicity depends on DBD voltage and treatment time. It seems that there exists an optimum plasma dose for the surface treatment. It is concluded that -CH3 and large molecule radicals can react with the radicals in the glass surface to replace -OH, and the hydrophobicity of the glass surface is improved accordingly.

关 键 词：常压低温等离子体 介质阻挡放电 多针-平板电极 表面改性 憎水性 

分 类 号：TM213[一般工业技术—材料科学与工程] TM203[电气工程—电工理论与新技术]