The electric field and temperature are the two important factors that influence the diameter and properties of fiber in the melt electrospinning process. It is commonly known that the polymer jet behavior is governed by the electric field within spinning area. In present work, a comprehensively-designed and properly-conducted analysis was carried out to investigate into the effects of electric field on the jet behaviors, diameters, crystalline structure and mechanical properties of the resultant fibers. An auxiliary electrode was invited to enhance the electric field strength. The high-speed photography was adopted to capture the jet motion, and also, the numerical simulation was used to understand the electric field distribution. By making use of the whipping amplitude and whipping frequency, the characteristics of jet behavior were described. It was found that by applying an auxiliary electrode, the average fiber diameter reduced from 61.01 µm to 9.06 µm, and the crystallinity and strength of the fiber was improved with the help of the higher electric filed intensity. In addition, the more uniform electric field would produce finer and more uniform fiber because of the more stable jet motion.

电场和温度是影响熔体静电纺丝过程中纤维直径和性能的两个重要因素。众所周知，聚合物的射流行为受纺丝区域内的电场控制。在目前的工作中，进行了全面设计和适当进行的分析，以研究电场对所得纤维的射流行为，直径，晶体结构和机械性能的影响。邀请辅助电极来增强电场强度。采用高速摄影技术来捕获射流运动，并通过数值模拟来了解电场分布。通过使用搅动幅度和搅动频率，描述了喷射行为的特征。已经发现，通过施加辅助电极，平均纤维直径从61.01μm减小到9.06μm，并且借助于更高的电场强度，纤维的结晶度和强度得以改善。另外，由于射流运动更稳定，因此电场越均匀，纤维越细，纤维越均匀。