天津工业大学学报2018，Vol.37Issue(1)：13-18,6.DOI:10.3969/j.issn.1671-024x.2018.01.003
新型纳微纤维复合滤料的制备及性能
Preparation and performance of a novel composite filter composed of micrometer as well as nanometer sized fibers
摘要
Abstract
In order to significantly increase a local minimum of fractional collection efficiency in the aerosol particle size about 0.3 μm(MPPS),and simultaneously make this anticipated gain in the filtration efficiency not overpaid with an excessive pressure drop,we developed a high efficiency low resistance air filter with a novel composite structure,which allowed us to produce filters by stacking multiple thin layers composed of microfibers and elec-trospun nanofibers,and to study the performance.The filtration performance tests show that the maximum filtra-tion efficiency reaches 96.6% for 300 nm NaCl aerosol particles,the maximum pressure drop is only 223 Pa un-der the face velocity of 32 L/min,which is superior to that of common nonwoven filters using needle punching. Additionally,it is found that,by simply varying the thickness and amount of layers,the stacking structure as-sisted by layer-by-layer is consequently changed,and then the filtration performance of nonwoven filtration fil-ters changed.Generally,in reference to QF and filtration performance,stacking up the multi-layers composed of the microfibrous support and the nanofibrous facial layer was more effective than using a single electrospun fi-brous membrane with high basis weight,and there is a theoretical optimum in stacked layers.Simultaneously,it is believed that the optimum value of a thickness for a single film should be an critical criterion for which nanofibers seemed to be implanted in a nonwoven web,simulating the"blending"way with microfibers.关键词
纳微纤维/复合滤料/复合结构/非织造空气滤料/PET微米纤维/PAN纳米纤维/微细粒子/过滤性能Key words
micrometer as well as nanometer sized fibers/composite filter/multilayer structure/nonwoven air filters/PET microfibers/PAN nanofibers/fine particles/filtration properties分类
轻工纺织引用本文复制引用
钱晓明,王一帆..新型纳微纤维复合滤料的制备及性能[J].天津工业大学学报,2018,37(1):13-18,6.基金项目
天津市应用基础与前沿技术计划项目(16JC2DJC36400) （16JC2DJC36400）
天津市科技计划项目(14TXGCCX00014) （14TXGCCX00014）
