| 摘要(英) |
Filtration is a control technique for effectively handling fine and ultrafine aerosols in the air.Electrospinning is a simple and feasible technique among many techniques for preparing nanofibers. The average fiber diameter, fiber basis weight, filter thickness, and packing density can be changed by adjusting different operating parameters to evaluate the relationship between the various physical properties of the nanofiber filter and the performance of the aerosol filter.
Among many polymer materials used for electrospinning, polyacrylonitrile (PAN) is a polymer with strong properties. In the past, the literature showed that although the
electrospinning filter has a good performance for aerosol filtration, the average fiber diameter is mostly more than 250 nm. However, in the past, there was a few studies
about preparation of PAN nanofiber filters by adjusting electrospinning parameters and application in evaluation to performance of the aerosol filter.
Therefore, in this study, PAN nanofiber filters were prepared by using an electrospinning system, and non-woven fabrics were used as the filter media for adjusting electrospinning operation parameters such as the applied voltage and the collection time. Experiments will use scanning electron microscopy to observe the physical characteristics of the average fiber diameter, filter thickness, fiber basis weight, and packing density, and to study the effect of various operating parameters on the preparation of nanofibers. In this study, the electrospinning nanofiber filter of each process was tested and the filter performance of the filter for fine and ultrafine aerosols was evaluated by considering the particle penetration and filter pressure drop (Quality Factor, qF). By comprehensively discussing the relationship between
electrospinning parameters and quality factor, in order to obtain the preparation parameters of PAN filter materials that can achieve better filtration performance. |
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