多针头静电纺聚丁二酸丁二醇酯(PBS)的研究

Research of multi-needle electrospinning PBS

为了研究多针头静电纺PBS的状况,利用comsole有限元软件对规模化6针头高压静电纺丝机的工作场强进行3D建模与仿真,模拟静电纺过程中场强的大小及其分布形式,并对模拟结果进行分析;通过静电纺PBS实验来研究场强分布及其大小对纺丝过程及纤维形态的影响.结果表明:线形排列的针的针头受到的场强不匀,射流间的排斥明显,纺的纤维粗细不匀,有微细纤维出现;圆形排列的针纺丝稳定,排斥不明显,所得纤维粗细比较均匀,直径较粗.

In order to research the multi-needle electrospinning behavior of PBS, eomsole is employed to simulate the electric intensity of the massive multi-needle electrospinning. The field intensity and distribution of the electric field is simulated. PBS is electrospun to produce ultra-fine nonwovens using typical multi-needle electrospinning, and the effect of electric field on the electrospinning process and morphology of fiber are investigated. The results demonstrate that the field intensity distribution of the needles arrayed in the linear is uneven, mutual repulsion of electrospun jets is clear, electrospun fibers are not uniform in diameter, in which the diameter of some fibers are more fine than the others ; on the other hand, the spinning process is stability in the circular needles, the influence of mutual electric interaction on jet path is not obvious, so the fiber diameter is much more thick but uniform.