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主要研究静电纺纳米/微米纤维复合膜(PA6/PET)的制备及其空气过滤性能,电纺了几种不同密集度的复合膜,研究了其对氯化钠粒子在特定条件下的过滤能力,进行了加载过滤测试,并通过扫描电子显微镜(SEM)对过滤前后纤维膜的表面形态进行观察.结果表明,对于多分散的NaCl粒子来说,过滤材料的过滤效率随着过滤时间的增加而增加.当增大过滤粒子流量时,过滤阻力与流量呈现线性增长关系,但是过滤效率变化不大.本实验中复合膜的最低过滤效率为99.990%.
In this paper, the preparation and air filtration performance of electrospun nanofiber / micron fiber composite membrane (PA6 / PET) were studied. Several composite membranes with different concentrations were electrospun, and their filtration ability against sodium chloride particles under certain conditions was studied , The loading filtration test was carried out, and the surface morphology of the fiber membrane before and after filtration was observed by scanning electron microscope (SEM) .The results showed that the filtration efficiency of filter material increased with the increase of filtration time for polydisperse NaCl particles Increase.When increasing the flow rate of filter particles, the filtration resistance and the flow showed a linear growth relationship, but the filtration efficiency changed little.The minimum filtration efficiency of the composite membrane in this experiment was 99.990%.