Dynamics Modeling And Simulation Of Electrospinning Process Based On The Maxwell Viscoelastic Model

Due to the simply equipment requirements, high efficiency and low operate cost, electrospinning technology has been widely used in energy, semiconductor manufacturing, biomedicine, sensor manufacturing fields. In recently years, with the rise of research in micro-nano manufacturing filed, electrospinning technology has gained more and more attention. However, the micro-nano structure of the nanofiber can be easily effects by the experiment conditions, due to the low equipment cost and simple operation, such as the polymer solution properties, experimental parameters input value and the environment factors during the experiment. Micro-nano materials prepared by electrospinning technique has difficulty in controlling structure, which is an important cause of the bottleneck of electrospinning technology development. Based on the dynamics analysis of electrospinning polymer jet behavior, we try to establish dynamic equations by using Maxwell viscoelastic model. In order to validate the model accuracy, simulation result was carried out combined with the actual electrospinning experiments. The influence issues were also discussed by using the dynamic model simulation. The main work of this thesis includes:Firstly, we analyzed the principle of electrospinning process, then the main factors affecting the morphology of polymer fiber deposition were discussed, including the polymer solution parameters, experimental system input parameters and the experimental environment parameters. The electrostatic spinning experiment of experimental equipment was also introduced, as well as the viscoelastic and viscoelastic model. By using the Maxwell viscoelastic model, we analyzed main force acting on the jet of electrospinning polymer fibers. After the establishment of jet fiber dynamics model, simulation result was obtained by software calculation, and the experimental data was used to verify the reliability of the dynamic model. Finally, the influence affected by the system input parameters was calculated by using the model simulation, and the principle of the electrostatic spinning technology was analyzed. The modeling for the dynamic force of electrospinning is much helpful for controllable manufacture of micro-nano structures, which reducing the requirements of online measurement technology, and provides a new method for controlling the micro-nano material cost and accuracy.