多针头静电纺丝过程中电场强度与分布的有限元分析  

Finite element analysis on electric field intensity and distribution during multi-needle electrospinning process

作　　者：陈威亚[1] 刘延波[1,2] 王洋知 沈烨伟 郭岭岭 

机构地区：[1]天津工业大学纺织学部,天津300387 [2]天津工业大学纺织复合材料重点实验室,天津300387 [3]江苏悦达家纺有限公司,江苏盐城224000

出　　处：《纺织学报》2014年第6期1-6,共6页Journal of Textile Research

基　　金：国家自然科学基金资助项目(51373121)

摘　　要：采用COMSOL Multiphysics有限元模拟软件对多针头静电纺丝过程中的电场场强大小与分布进行了模拟分析,对过程参数如纺针数量、直径、长度、间距以及电压对各针场强大小与分布的影响进行了系统研究,以探寻过程参数对场强分布的影响和出现"边缘效应(end effect)"的理论依据。结果发现,对于单针头静电纺丝,场强峰值出现在针尖部位,而在线性排列的多针头静电纺丝中,中间纺针的场强受到抑制变小,场强峰值出现在两侧纺针的针尖外侧,从而导致"边缘效应"现象。此外,随着纺针数量、直径和长度的增加,两侧纺针场强峰值下降显著,而电压的增大和接收距离的减小则使场强峰值明显增大。COMSOL Muhiphysics software was employed to simulate and analyze the magnitude and distribution of the electric field intensity during multi-needle electrospinning process.Systematic analysis was conducted on which the factors such as the number,diameter,length,spacing of the spinning needles and applied voltage influence the magnitude and distribution of the field intensity of each needle,and the theoretical foundation for ＂end effect＂.The results indicated that the peak value of field intensity occurs at needle tip for single needle electrospinning,while the peak values will occur at the outsides of the tip of the needles located at the bilateral sides of the linear needle array,and the field intensity of the middle needles decreases due to the suppression actions from the side needles resulting in ＂end effect＂.In addition,the peak intensity of the outside needles was found to decrease significantly with the increasing number,diameter and length of the needles,while increase in the applied voltage and decrease in receiving distance would enhance the peak intensity of electric field notably.

关 键 词：多针头 静电纺丝 电场强度 有限元分析 

分 类 号：TS174.8[轻工技术与工程—纺织材料与纺织品设计]