摘要
制备了具有多孔结构的聚四氟乙烯(PTFE)膜,并利用低压等离子体对膜表面进行改性处理,探究了空气和乙炔分别作为等离子体源时对改性PTFE膜的电容去离子性能和力学性能的影响。结果表明:随着等离子体处理时间的增加,PTFE膜的拉伸强度呈先上升后下降的趋势,断裂拉伸应变呈下降趋势,而PTFE膜电容去离子性能逐渐增强。当乙炔为等离子体源时,改性PTFE膜最大吸附量、电容去离子性能、耐循环性能都优于空气作为等离子体源时的改性PTFE膜,并且拥有更低的能耗,能够制备高性能的改性PTFE膜。
Polytetrafluoroethylene(PTFE)membrane with porous structure was prepared and modified by low-pressure plasma.The effects of air and acetylene as plasma sources on the capacitive deionization and mechanical properties of the modified PTFE membrane were investigated.The results show that with the increase of plasma treatment time,the tensile strength of PTFE membrane first increases and then decreases,and the tensile strain at break decreases,while the capacitive deionization performance of PTFE membrane increases gradually.When acetylene is used as plasma source,the maximum adsorption capacity,capacitive deionization performance and cycle resistance of the modified PTFE membrane are better than those of the modified PTFE membrane when air is used as plasma source.Moreover,it has lower energy consumption and can be used to prepare high-performance modified PTFE membrane.
作者
吴飞
WU Fei(Hunan Urban Construction College,Xiangtan 411104,China)
出处
《塑料科技》
CAS
北大核心
2020年第12期63-66,共4页
Plastics Science and Technology
基金
湖南省教育厅科学研究项目(16C0285)。
关键词
低压等离子体
PTFE膜
电容去离子
表面接枝
Low pressure plasma
PTFE membrane
Capacitive deionization
Surface grafting
