[1]李世航,温国祥,王路宇,等.驻极体滤料的空气湿度和静电效应影响机理研究[J].西安建筑科技大学学报(自然科学版),2022,54(05):734-741.[doi:10.15986/j.1006-7930.2022.05.012 ]
　LI Shihang,WEN Guoxiang,WANG Luyu,et al.Study on influence mechanism of air relative humidity and electrostatic effect of electret filter media[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2022,54(05):734-741.[doi:10.15986/j.1006-7930.2022.05.012 ]
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驻极体滤料的空气湿度和静电效应影响机理研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
54
期数:
2022年05期
页码:
734-741
栏目:
出版日期:
2022-10-28

文章信息/Info

Title:
Study on influence mechanism of air relative humidity and electrostatic effect of electret filter media
文章编号:
1006-7930(2022)05-0734-08
作者:
李世航1; 2; 3; 温国祥1; 3; 王路宇1; 3; 吕伟鹏1; 3; 刘凌妤1; 3
(1.中国矿业大学 碳中和研究院，江苏 徐州 221008; 2.中国矿业大学 职业健康研究院，江苏 徐州 221008; 3.中国矿业大学 安全工程学院，江苏 徐州 221116)
Author(s):
LI Shihang1; 2; 3;  WEN Guoxiang1; 3;  WANG Luyu1; 3;  LÜ Weipeng1; 3;  LIU Lingyu1; 3
(1.Carbon Neutralization Institute, China University of Mining and Technology, Xuzhou 221008, China; 2.Research Institute of Occupational Health, China University of Mining and Technology, Xuzhou 221008, China; 3.School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China)
关键词:
空气净化;  驻极体滤料;  空气湿度;  过滤效率;  过滤阻力
Keywords:
air purification;  electret filter media;  air relative humidity;  filtration efficiency;  filtration resistance
分类号:
TU 834.8
DOI:
10.15986/j.1006-7930.2022.05.012
文献标志码:
A
摘要:
驻极体滤料越来越广泛的应用于空气净化领域，在防疫期间也起到了重要作用，但其空气湿度和静电效应影响机理研究不足.为此，通过构建亚微米颗粒过滤加载实验系统，研究空气湿度作用下初始状态、浸水处理、去静电处理、老化处理驻极体滤料过滤效率和压降的演变规律.结果表明:空气湿度变化甚至浸水处理不会改变驻极体滤料的初始过滤效率和压降; 经去静电处理后驻极体滤料的压降不变，但对于粒径大于20 nm的颗粒，驻极体滤料的初始过滤效率大幅降低; 真实环境中使用了5～7个月后的驻极体滤料，其单位面积加载质量和压降增长都较低，但过滤效率出现了显著下降，经去静电处理后过滤效率还会大幅下降，即使用5～7个月后驻极体滤料所带电荷仍未完全消失; 加载相同质量颗粒条件下，实验室中加载滤料的过滤效率高于真实环境中加载滤料的过滤效率，这也表明驻极体滤料长时间暴露在真实环境中更易造成电荷衰减.
Abstract:
Electret filter media is more and more widely used in the field of air purification, and also plays an important role in epidemic prevention, but the research on the influence mechanism of air humidity and electrostatic effect is insufficient. Therefore, a submicron particle filtration loading experimental system is constructed to study the evolution law of filtration efficiency and pressure drop of the initial state, immersion treatment, electrostatic removal treatment, and aging treatment electret filter media under air humidity. The results show that the initial filtration efficiency and pressure drop of electret filter media do not change with the change of air humidity or even immersion treatment. The pressure drop of the electret filter media remains unchanged after electrostatic removal treatment, nevertheless, the initial filtration efficiency of the electret filter media is greatly reduced for particles larger than 20 nm. The electret filter media used in the real environment for 5 ～ 7 months has a low loading mass per unit area and a low pressure drop growth, but the filtration efficiency has decreased significantly. After de-electrostatic treatment, the filtration efficiency will also decrease significantly, that is, the charge carried by electret filter media has not completely disappeared after 5-7 months of use. Under the condition of loading the same mass of particles, the filtration efficiency of the filter media loaded in the laboratory is higher than that in the real environment. This indicates that the electret filter media is more likely to cause the charge decay when exposed to the real environment for a long time.

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备注/Memo

备注/Memo:
收稿日期:2021-10-11修改稿日期:2022-10-08
基金项目:国家自然科学基金面上项目(52174215); 江苏省自然科学基金青年项目(BK20200642); 中央基本科研业务费项目(2021GJZPY06)
第一作者:李世航(1990—),男,博士,副研究员,主要研究方向为空气净化与低碳技术.E-mail:shihangli@cumt.edu.cn
更新日期/Last Update: 2022-10-28