中国电机工程学报2016，Vol.36Issue(6)：1731-1738,1787,9.DOI:10.13334/j.0258-8013.pcsee.2016.06.030
重频脉冲放电等离子体处理聚合物材料加快表面电荷消散的实验研究
Experimental Study of Accelerating Surface Charge Dissipation on Polymer Treated by Repetitively Pulsed Discharge Plasmas
摘要
Abstract
Low-temperature plasmas have been widely used in surface modification of polymer material. To study a series of performances on polymer treated by plasma, non-thermal plasmas generated by dielectric barrier discharge (DBD) are used to treat low density polyethylene (LDPE) films in atmospheric air. The results were analyzed with water contact angle measurement, fourier transformed infrared spectroscopy(FTIR) and system of surface potential measurement. The results show that water contact angle gradually decreased with increasing treatment time during 0~20s. However, theirs values did not change obviously during 20~240s. FTIR show that LDPE films after treatment formed oxygen-containing polar species such as carbonyl. Three- dimensional distribution of the surface potential show that the process of decay was accelerated after DBD treatment. The decay rate improved with increasing treatment time. The results were explained for two aspects: one reason was that the reduction of water contact angle resulted in increasing of adsorption water content on the surface. It would increase surface conductivity and accelerate charge carriers to migrate along the surface. Another reason was that DBD treatment introduced polar carbonyl group on the surface, leading to the energy level of surface trap shallow. In summary, DBD generated by repetition frequency pulse can effectively accelerate surface charge dissipation of LDPE films. This can provide a reference for applications.关键词
介质阻挡放电/低密度聚乙烯/水接触角/傅里叶变换红外光谱/表面电位Key words
dielectric barrier discharge/low density polyethylene/water contact angle/Fourier transformed infrared spectroscopy/surface potential分类
动力与电气工程引用本文复制引用
马云飞,章程,李传扬,陈根永,周远翔,邵涛..重频脉冲放电等离子体处理聚合物材料加快表面电荷消散的实验研究[J].中国电机工程学报,2016,36(6):1731-1738,1787,9.基金项目
国家自然科学基金项目(51222701)；国家重点基础研究发展计划项目(973项目)(2014CB239505-3)。 Project Supported by National Natural Science Foundation of China (51222701) （51222701）
The National Basic Research Program (973 Program)(2014CB239505-3) （973 Program）
