静电纺聚丙烯腈纳米纤维复合滤材的制备及其气液过滤性能

发布时间：2018-06-06 22:58

本文选题：静电纺丝 + 聚丙烯腈　；参考：《纺织学报》2017年09期

【摘要】：为探究纳米纤维物性参数对复合滤材气液过滤性能的影响,利用静电纺丝方法在普通玻璃纤维滤材上制备了聚丙烯腈(PAN)纳米纤维层,以3层堆叠方式得到不同纳米纤维层面密度和纤维直径的复合滤材。在相同实验条件下,以癸二酸二辛酯(DEHS)为实验介质,通过滤材气液过滤性能实验装置分析了不同复合滤材的过滤效率、压降和品质因子。结果表明:复合滤材的稳态过滤效率和压降均随着纳米纤维层面密度的增大而增加,但稳态品质因子呈现先增加后降低的趋势,且在面密度为0.4 g/m2时达到最大值;在面密度相等的条件下,纳米纤维直径由706.5 nm降低到520.1 nm,滤材的稳态过滤效率和品质因子均随着纳米纤维直径的减小而逐渐增加,表明在复合滤材中宜选用纤维直径较小的纳米纤维层。
[Abstract]:In order to investigate the effect of physical parameters of nanofibers on the gas-liquid filtration properties of composite filters, polyacrylonitrile (PAN) nanofibers were prepared on ordinary glass fiber filters by electrostatic spinning. The composite filter material with different fiber layer density and fiber diameter was obtained by three layers stacking. Under the same experimental conditions, the filtration efficiency, pressure drop and quality factors of different composite filter materials were analyzed by using dioctyl sebacate (DEHS) as the experimental medium. The results showed that the steady-state filtration efficiency and pressure drop of composite filter increased with the increase of nano-fiber density, but the steady-state quality factor increased first and then decreased, and reached the maximum when the surface density was 0.4 g/m2. Under the condition of equal surface density, the diameter of nanofibers decreased from 706.5 nm to 520.1 nm, and the steady-state filtration efficiency and quality factors increased with the decrease of nano-fiber diameter. It is suggested that the nanofiber layer with smaller fiber diameter should be used in the composite filter material.
【作者单位】：中国石油大学(北京)过程流体过滤与分离技术北京市重点实验室;中国石油大学(北京)机械与储运工程学院;中国石油大学(北京)化学工程学院;
【基金】：国家自然科学基金项目(51376196)
【分类号】：TB332;TB34

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