无针式碟形静电纺丝喷头不同圆周倾角的模拟与试验  

Simulation and Experiment of Needleless Electrospinning Dish Nozzle with Different Circumferential Tilt Angles

作　　者：于昊楠 魏亮[1,2] 杨占平 覃小红[1,2] 张弘楠 

机构地区：[1]东华大学上海市微纳米纺织重点实验室,上海201620 [2]东华大学纺织学院,上海201620 [3]南通醋酸纤维有限公司,江苏南通226000

出　　处：《东华大学学报（自然科学版）》2018年第1期18-27,共10页Journal of Donghua University(Natural Science)

基　　金：长江学者(青年学者)计划资助项目(5137303);国家自然科学基金资助项目(11172064);教育部重点支持资助项目(113027A);上海市科委"扬帆计划"资助项目(14Y1405100);中央高校基本科研业务费专项基金资助项目;东华大学励志计划资助项目

摘　　要：设计一种新型无针式碟形静电纺丝喷头用以制备亚微米纤维。建立不同圆周倾角的碟形喷头几何模型,利用ANSYS Maxwell 3D电磁学分析软件模拟无针式碟形喷头的电压及电场强度分布,探究无针式碟形喷头不同圆周倾角对亚微米纤维直径及产量的影响。结果表明:碟形喷头边缘处的电场强度最大,在施加电压一致时,圆周倾角越大则碟形喷头边缘的电场强度越大;纺丝液与水平面夹角随着圆周倾角的增大而增大;利用不同质量分数的聚丙烯腈(PAN)溶液进行纺丝,随着PAN质量分数的增加,亚微米纤维直径增加;随着碟形喷头圆周倾角的增加,亚微米纤维直径减小,产量增加。A new needleless electrospinning dish nozzle was designed to produce submicron fibers and the geometric model of the dish nozzle with different circumferential tilt angles was established. The ANSYS Maxwell 3D analysis software was used to simulate the distribution of voltage and electric field intensity of the needleless dish nozzle, and the influences of different circumferential tilt angles on the diameter and the yield of submicron fibers were explored. The results show that the electric field intensity at the edge of the dish is the largest, and the larger the circumferential tilt angle, the bigger the electric field intensity when under the same value of applied voltage. The angle between the spinning solution and the horizontal plane increases with the increase of the circumferential tilt angle. Different mass fractions of polyacrylonitrile （PAN） solution are used for spinning and the diameter of submicron fiber increases with the increase of solution concentration. With the increase of the tilt angle, the diameter of the submicron fiber decreases while the throughput increases.

关 键 词：静电纺丝 碟形喷头 圆周倾角 模拟 亚微米纤维 直径 

分 类 号：TQ342.69[化学工程—化纤工业]