【摘要】 为有效提高纺丝的收集效率和纺丝的性能,以自行设计的新型卧式高压静电纺丝机为研究对象,通过合理简化纺丝机结构设计,建立了纺丝工作电场的线性有限元模型,总结了ANSYS数值模拟结果,发现:静电纺丝工作电场的电势和电场强度矢量横向成轴向对称分布,且场强最大值出现在喷丝管管口处,约2.64×106 V/m,方向垂直钢板向上,与实际情况十分吻合.同时,场强随着距离负极板越近,下降的越快,尤其是在靠近喷丝管管口处的一小段距离内,场强值急剧下降.在靠近收集装置时,场强值已下降到相对较小的范围以内,这些将对整个纺丝过程的稳定性产生影响,表明纺丝机工作静电场结构参数需进一步合理设计,为后续实施静电纺丝装置结构的优化设计提供了依据.更多还原

【Abstract】 Taking the new self-designed horizontal high-voltage electrostatic spinning machine for study object,aiming at effectively raising the collecting efficiency and characteristic of spinning,the model of linear finite element about the spinning electric field is established by properly simplifying its structure.And after giving a summary on the result of numerical simulation,a conclusion can be arrived at: the electric potential and the electric intensity vector is distributed symmetrically in horizontal axial,the maximum of the field intensity appears at nozzle on spinneret pipe,is about 2.64×106 V/m.Besides,it is vertical with steel plate,which is consistent with practical case.Meanwhile,the nearer the distance between the intensity and negative plate is,the quicker the intensity declines.Especially,in the near of nozzle on spinneret pipe,the intensity value decreases rapidly.When closing to the collecting device,the intensity value declines within a comparatively small range,which exerts influence on the stability of the whole spinning,and shows that electrostatic structure parameter of spinning machine needs to be further designed.The basis is provided for optimal design of electrostatic spinning fitting.更多还原