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双锥面无针熔体微分静电纺丝电场模拟与实验
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摘要
采用有限元分析软件ANSYS对多层锥面无针熔体微分静电纺丝装置建立工作电场的线性有限元模型,分析了双锥面特征设计参数对纺丝尖端场强的影响,分别讨论了内圈直径和内圈伸出距离对内外圈纺丝尖端及纺丝路径场强分布的影响。ANSYS数值模拟结果表明:增加锥面层数会减弱最外圈纺丝尖端的电场强度;对于双锥面熔体纺丝装置,内锥面直径大小对纺丝尖端场强分布的影响不明显;当内锥面伸出距离增大时,内外圈纺丝尖端场强的差值先减小再增大;特别当内锥面直径26mm,内圈伸出距离6mm时,内外圈纺丝尖端电场强度分布最相似,能够保证内外锥面制备的纤维射流间距相同。实验结果和模拟结果一致。
Established a linear finite element model of the double cone needleless melt differential electrospinning device about the spinning electric field using finite element analysis software(ANSYS). The influences of design parameters of the double cone on the electric field intensity of spinning edge were analyzed. The affects of inner diameter and extend distance on the electric field intensity distribution of spinning edge and spinning path were discussed respectively. The used software results of numerical simulation indicated that increasing cone layers will weaken the electric field intensity of spinning edge, and with regard to the double cone needle-free melt differential electrospinning device, the influence of inner diameter size on electric field intensity distribution of spinning edge was not obvious. When the extend distance of inner cone increased gradually, the difference value of electric filed intensity between inner and outer cone decreased firstly and then increased. In particular, the electric filed intensity distribution of inner and outer cone are most similar and the jet spacing of inner and outer cone are substantially identical when the inner cone diameter is 26 mm, inner extended distance is 6mm. The experimental results are consistent with the simulation results.
引文

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