Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (10): 209-215.doi: 10.13475/j.fzxb.20210305007

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Research progress in high efficiency and low resistance air filter materials

YANG Jizhen1,2,3, LIU Qiangfei1,2,3, HE Ruidong1,2,3, WU Shaohua1, HE Hongwei1,2,3, NING Xin1,2,3, ZHOU Rong1,2,3(), DONG Xianglin4, QI Guishan4   

  1. 1. College of Textile & Clothing, Qingdao University, Qingdao, Shandong 266071, China
    2. Industrial Research Institute of Nonwovens & Technical Textiles, Qingdao University, Qingdao, Shandong 266071, China
    3. Shandong Center for Engineered Nonwovens, Qingdao, Shandong 266071, China
    4. Shandong Xingguo Xinli Environmental Protection Technology Co., Ltd., Zibo, Shandong 255000, China
  • Received:2021-03-12 Revised:2021-11-29 Online:2022-10-15 Published:2022-10-28
  • Contact: ZHOU Rong E-mail:rzhouqdu@126.com

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Abstract:

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.

Key words: electrospinning, meltblown material, air filtration, electret, micro-nano structure, high efficiency and low resistance

CLC Number: 

  • TS174

Tab.1

Comparison of different staging methods"

驻极方式 优点 缺点
静电驻极 电荷储存能力强 仅适用于静电纺丝工艺,受材料影响较大
电晕驻极 工艺成熟,适用范围广泛,更适合面密度较大的材料,电荷主要储存在材料表面 电荷逸散较快,驻极体不稳定,过滤性能难以达到峰值
摩擦驻极 驻极效果好,电荷分布在材料内部 仅适用于带有不同电性的纤维
水驻极 不需使用高压电,驻极体稳定,保存时间长 工艺不成熟,具体应用难度大

Tab.2

Advantages and disadvantages of different ways to improve filtration efficiency"

处理方式 过滤效率 过滤阻力 容尘量 成本
浸渍 一般 一般 一般 一般
涂层 中 一般 一般 一般
覆膜 高 初始高,后期趋于平稳 低 高
梯度结构设计 较高 低 高 高
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