【作者】 邵涛； 章程； 龙凯华； 王珏； 张东东； 严萍； 周远翔；

【Author】 SHAO Tao~1,ZHANG Cheng~1,LONG Kai-hua~1,WANG Jue~1, ZHANG Dong-dong~1,YAN Ping~1,ZHOU Yuan-xiang~2 (1.Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China; 2.State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Electrical Engineering Department,Tsinghua University,Beijing 100084,China)

【机构】 中国科学院电工研究所； 清华大学电力系统及发电设备控制和仿真国家重点实验室；

【摘要】 本文介绍在大气压空气中利用纳秒脉冲介质阻挡放电对PET材料表面进行了亲水性改善。分别采用均匀和丝状放电模式对PET表面改性处理,并采用水接触角测量、AFM观察、XPS对改性材料进行表面分析。实验发现DBD处理后PET表面水接触角明显减小,接触角从接近80度下降到20多度,但随处理时间的增加有饱和效应;PET表面粗糙程度增加,亲水性含氧基团被引入,从而改善了材料表面亲水性;纳秒脉冲下的均匀DBD比丝状DBD处理效果更为显著。更多还原

【Abstract】 In this paper,surface treatment of PET films for improving the hydrophilicity using DBD excited by unipolar nanosecond-pulses is presented.Homogeneous and filamentary discharge are obtained under certain experimental conditions and then used to modify the surface of PET films.The properties of PET films before and after treatment are characterized with water contact angle measurement,atomic force microscope and X-ray photoelectron spectroscope.The experimental results show that static water contact angles decrease after DBD plasma treatment and the observed contact angle is changed from 80°for the untreated samples to 20°after treatment.However,the decrease of contact angles is not continuous and it will reach a saturation state after certain treatment time.The improvement of surface hydrophilicity can be attributed to the enhancement of the surface roughness and introduction of oxygen-containing polar functional groups.In contrast with the filamentary DBD treatment,the homogenous DBD is more effective in PET surface treatment.更多还原