阵列圆盘式纺丝头结构对电场强度的影响  

Influence of array disc-type spinneret structure on electric field intensity

作　　者：刘延波 和星雨[1,2] 郝铭 胡晓东 杨波 LIU Yanbo;HE Xingyu;HAO Ming;HU Xiaodong;YANG Bo(School of Textile Science and Engineering,Wuhan Textile University,Wuhan 430200,China;State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan 430200,China;School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]武汉纺织大学,纺织科学与工程学院,武汉430200 [2]武汉纺织大学省部共建纺织新材料与先进加工技术国家重点实验室,武汉430200 [3]天津工业大学纺织科学与工程学院,天津300387

出　　处：《现代纺织技术》2023年第5期142-150,共9页Advanced Textile Technology

基　　金：国家自然科学基金项目(51973168);“武汉英才”湖北省武汉市高层次人才项目(武财行[2022]734)。

摘　　要：传统的规模化静电纺丝技术存在所需电压高、场强不均和边缘效应等问题,导致纺丝质量不佳,难以规模化制备纳米纤维。因此,提出一种新型的阵列圆盘式无针头设备,使用Solidworks软件进行三维建模,然后将模型导入COMSOL Multiphysics 5.6有限元仿真软件进行模拟,优化新型纺丝头的结构参数、接收距离、外加电压以得到最佳的电场强度和匀场效果。结果表明:当新型纺丝头圆盘数量为10、圆盘间距为40 mm、圆盘外径为40 mm、接收距离为100 mm、电压为25 kV时,电场强度平均值为1.48×106 V m,CV值为1.60%,表明该纺丝头结构有效克服了边缘效应并降低纺丝所需电压。所得纺丝装置模型在纺丝口处的电场强度较高且分布均匀,可批量制备高质量的纳米纤维。Electrospinning is mainly used to prepare nanofibers from polymers.Nanofibers have high porosity,high specific surface area,good mechanical properties and excellent biocompatibility.Therefore,nanofibers are widely used in drug delivery,wound dressing,tissue engineering and other fields,and have become one of the research hotspots.At present,electrospinning technology for large-scale preparation of nanofibers is mainly divided into multi-needle electrospinning and needleless electrospinning.Multi-needle electrospinning can accurately feed the liquid,and the required voltage is low,but the pinhole is easy to block and difficult to clean,and there is a edge effect,resulting in uneven preparation of nanofibers.Needleless electrospinning cannot accurately feed the liquid,the required voltage is high,the spinning position is uncontrollable,and the fiber diameter distribution is wide.In order to prepare high-quality nanofibers on a large scale,we proposed to build a new type of array disc-type spinneret needless equipment.The jet is emitted from the spinneret hole,which can accurately control the spinning site and precise feeding.The angle between the adjacent spinneret holes is 30°,and the angle between the spinneret hole and the vertical line is 15°,which can avoid the interaction between the spinneret holes and weaken the edge effect.Firstly,the structure model of the spinneret was optimized.Based on the principle of single variable,three-dimensional models of different structures were established by changing the structural parameters of the spinneret(central axis diameter,disc number,disc spacing,disc outer diameter,and auxiliary electrode).The simulation software was imported to simulate the electric field strength of the spinneret,and the optimal structural parameters of the spinneret were obtained.Secondly,the spinning process parameters(applied voltage,and receiving distance)were changed to determine the spinning parameters.It is found that the field strength and CV value of the spinneret decrease with the inc

关 键 词：静电纺丝 阵列圆盘式纺丝头 电场强度 有限元分析 

分 类 号：TS104.76[轻工技术与工程—纺织工程]