In order to develop high efficiency and low resistance air filtration materials, solve the imbalance between filtration efficiency and filtration resistance in the current research, and further improve the quality factor for filtration materials, this paper reviews the relevant research on nanofiber membrane , melt-blown filtration materials and high-temperature resistant needle filter mat in recent years. The research status of electret filtration materials, micro-nano structure filtration materials, gradient structuring and finishing methods to improve the filtration efficiency of materials are reviewed. The influencing factors of charge storage capacity of materials are analyzed and discussed. The preparation methods of micro-nano structure materials are summarized. The advantages and disadvantages of gradient structuring and finishing methods for improving filtration efficiency were compared. It is concluded that the electret and micro-nano structured filtration materials will draw great attention from researchers because of their great potentials in the future field of air purification.
关键词
静电纺丝/熔喷材料/空气过滤/驻极体/微纳结构/高效低阻
Key words
electrospinning/meltblown material/air filtration/electret/micro-nano structure/high efficiency and low resistance
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