Abstract:

A double-needle eoectrospinning was used to prepare PA6/PA66 nano-net nanofiber membrane (NSFM) for improving the filtration property. The influence of the mass fraction of CaCl2, voltage, humidity and other parameters for coverage of nano-nets and fiber morphology were studied. Then, composite membrane was made by the NSFM and the conductive fabric, the influence of the coverage rate of the nano-nets and the areal density of the NSFM on the air filtering effect was studied. The results showed that when the mass fraction of the CaCl2 powder in the electrospinning solution was 2%, the spinning voltage was 20kV, and the ambient humidity was 40%, the coverage rate of the nano-nets in the nanofiber membrane was the highest. With the increase of the coverage rate of the nano-nets,the increasd of the quality factor of the composite membrane; Meanwhile, when the areal density of the NSFM was 0.5g/m2, the effect of filtering for the composite membrane was best.