Preparation and Properties of PVDF/Fe3O4 Nanofibers with Magnetic and Electret Effects and their Application in Air Filtration

Electrospun electret filter material is widely studied because of its excellent removal effect on particulate matter from air streams. Here, a kind of high efficiency and low pressure drop nanofiber (NF) membrane with both electret effect and magnetic effect is developed, and compounded it with glass fiber mesh and polyester (polyethylene terephthalate) mesh to prepare a sandwich structure of NF anti-haze window screen. Under the synergistic effect of magnetic particles, when the density is 2.06 g m(-2), the filtration efficiency of NF anti-haze window screen can reach 99.95% for the fine particles below 0.3 mu m, while the filtration pressure drop is only 58.5 Pa, with good light transmittance and excellent breaking strength (6.32 MPa). Therefore, polyvinylidene fluoride/Fe3O4 composite NF membrane has a potential application prospect in the field of air filtration.

电纺驻极体过滤材料由于对气流中颗粒物的去除效果极佳，因此得到了广泛的研究。 在这里，开发了一种兼具驻极体效应和磁效应的高效低压降纳米纤维（NF）膜，并将其与玻璃纤维网和聚酯（聚对苯二甲酸乙二醇酯）网复合以制备一种NF防雾的三明治结构 窗纱。 在磁性颗粒的协同作用下，当密度为2.06 gm（-2）时，对于0.3μm以下的细颗粒，NF防雾窗纱的过滤效率可达到99.95％，而过滤压降仅为58.5。 Pa，具有良好的透光率和优异的断裂强度（6.32 MPa）。 因此，聚偏二氟乙烯/ Fe3O4复合NF膜在空气过滤领域具有潜在的应用前景。

Published: 2020

Journal ：MACROMOLECULAR MATERIALS AND ENGINEERING

Impact Factor：3.856

Paper link: https://onlinelibrary.wiley.com/doi/abs/10.1002/mame.201900856