空气过滤用电纺PVDF-PAN/熔喷PP无纺布复合材料的制备及过滤...

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2019-05-01    环球过滤分离技术网    guolvfenlitech1



摘  要：为开发高效低阻的空气过滤材料，采用静电纺丝技术制备了聚偏氟乙烯（PVDF）-聚丙烯腈（PAN）复合纳米纤维，并与丙纶熔喷非织造布复合制得高效复合过滤材料，研究了PVDF与PAN的质量比对溶液性质、表面形貌、比表面积、透气性和过滤性能的影响。结果表明，当PVDF与PAN质量比为3:5时，其溶液可纺性最好，所得纤维直径均匀，约0.59 μm；利用BET比表面积分析仪测试可得其比表面积约为PVDF/PAN质量比为2:1时的两倍；利用滤料测试仪对PVDF-PAN/熔喷PP无纺布复合滤材的过滤性能进行测试，结果表明静电纺PVDF-PAN纳米纤维层可显著提高丙纶熔喷非织造布的过滤性能，PVDF-PAN/熔喷PP无纺布过滤效率可达99.95%，明显高于熔喷无纺布的过滤效率（65%），过滤阻力为77 mmH2O (1mmH2O=9.8Pa)，过滤品质因子达0.0987，远高于熔喷无纺布的过滤品质因子0.0168，过滤效果得到显著提升。



关键词：静电纺丝；聚偏氟乙烯；聚丙烯腈；熔喷无纺布；过滤性能



Abstract: The high filtration efficiency and low flow resistance of air filtration materials were successfully prepared by composing electrospinning poly(vinylidene fluoride) (PVDF)-polyacrylonitrile (PAN) nanofibers with Polyethelyene(PP) melt-blown nonwoven. The influence of the PVDF-to-PAN mass ratio on solution properties, morphology, specific surface area and filtration properties were investigated. The results show that when the PVDF-to-PAN mass ratio is 3:5, the solution has excellent spinnability and the well-distributed nanofibers with mean diameter of 0.59μm can be formed. BET test result shows that it went for nearly double the specific surface area when PVDF-to-PAN mass ratio decreases from 2:1 to 3:5. Besides, the filtration efficient and resistance determined by TSI 8130 filter were tested. Results reveal that electrospinning PVDF-PAN nanofibers can significantly improve the filtration performance of polypropylene meltblown nonwovens, the filtration efficiency of PVDF-PAN/melt-blown PP nonwoven reaches to 99.95%, significantly higher than that of melt-blown nonwoven with 65%, filtration resistance is 77 mmH2O (1mmH2O=9.8Pa), filter quality factor reaches 0.0987, which is more higher than 0.0168 of melt-blow nonwoven. The filtration properties significantly enhances by composing electrosping PVDF-PAN nanofiber with melt-blow nonwoven.



Keywords: electrospinning; poly(vinylidene fluoride); polyacrylonitrile; melt-blow nonwoven; filtration property



作者：王利娜等，河南工程学院 材料与化学工程学院，郑州

通讯作者：辛长征，河南工程学院 材料与化学工程学院，郑州

全文详见中国知网学术期刊优先数字出版。

来源于：中国复合材料学会     www.guolvfenlitech.com