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Continuous production and properties of mutil-level nanofiber air filters by blow spinning

机译：通过吹旋转的多级纳米纤维空气过滤器的连续生产和性能

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Nanofibers are gradually being widely used in air filtration due to their unique characteristics. However, the mass production of nanofiber filter material faces several problems. Blow spinning is an emerging technology, which have great potential for mass production of nanofibers. In this work, we have successfully realized the continuous production of 500 mm wide nanofiber membranes by blow spinning, which enables continuous preparation of multi-level nanofiber filter materials: PAN60 (filtration efficiency is 63.2%, pressure drop is 18 Pa), PAN80 (filtration efficiency is 80.7%, pressure drop is 38 Pa), PAN90 (filtration efficiency is 92.9%, pressure drop is 58 Pa) and PAN99 (filtration efficiency is 99.5%, pressure drop is 123 Pa). In order to improve the stability performance of melt-blown filters, we provide a strategy that combines nanofibers with a melt-blown filter. PAN nanofibers were sprayed directly on the melt-blown filter by blow spinning. The composite filters have more stable filtration performance and higher efficiency when intercepting particles with a diameter below 100 nm than melt-blown filters.
机译：由于其独特的特性，纳米纤维逐渐被广泛用于空气过滤。然而，纳米纤维过滤材料的大规模生产面临着几个问题。吹纺是一种新兴技术，具有巨大的纳米纤维生产潜力。在这项工作中，我们已经通过吹纺成功实现了500毫米宽的纳米纤维膜的连续生产，这使得连续制备多级纳米纤维过滤材料：PAN60（过滤效率为63.2％，压降为18Pa），PAN80（过滤效率为80.7％，压降为38Pa），Pan90（过滤效率为92.9％，压降为58Pa）和Pan99（过滤效率为99.5％，压降为123Pa）。为了提高熔喷过滤器的稳定性性能，我们提供了一种将纳米纤维与熔喷过滤器结合的策略。通过吹扫纺丝将锅纳米纤维直接喷涂在熔喷过滤器上。复合滤光器具有更稳定的过滤性能和更高的效率，直径低于100nm的颗粒，而不是熔喷过滤器。

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