静电纺丝时间对复合滤纸油水聚结分离性能的影响

Influence of Electrospinning Time on Oil-water Coalescence and Separation Performance of the Composite Filter Paper

本研究通过改变静电纺丝时间(1~4 h),在基材表面制备了不同结构的聚丙烯腈(PAN)微纳米纤维膜,形成复合滤纸,并在低柴油界面张力(17 mN/m)、小粒径水滴(Dx(50)=10±1.5μm)和低水分含量(0.3%)的条件下研究了复合滤纸的油水聚结分离性能。研究结果表明,随静电纺丝时间的增加,复合滤纸的油水聚结分离效率由4.85%提高到96.88%,压差由3.71 kPa增大到8.10kPa,且当纺丝时间为1 h时,制备的复合滤纸与尼龙网组合的形式具有相对较优的油水聚结分离性能。

PAN micro-nanofiber membranes with different structures were prepared on the surface of substrate by changing the electrospinning time(1~4 h). The membranes and substrate were combined and prepared composite filter paper,and the oil-water coalescence and separation performance of composite filter paper were explored under the conditions of low diesel interfacial tension(17 mN/m),small particle size water droplets(Dx(50)=10±1. 5 μm)and low moisture content(0. 3%). The results showed that as the electrospinning time increased,the oil-water coalescence and separation efficiency of the composite filter paper increased from 4. 85% to 96. 88%,and the pressure drop increased from 3. 71 kPa to 8. 10 kPa. When the spinning time was 1 h,the prepared filter paper composited with a nylon mesh showed relatively good oil-water coalescence and separation performance.