Study on corona charging characteristic of melt-blown polypropylene electret fabrics

被引：14

作者：

Chen, Chen ^{[1
]}

Chen, Gangjin ^{[1
,2
]}

Zhang, Jianfeng ^{[1
]}

Lin, Yanfeng ^{[3
]}

Yu, Youshu ^{[2
]}

Gao, Xiaoli ^{[2
]}

Zhu, Liping ^{[3
]}

机构：

[1] Hangzhou Dianzi Univ, Lab Electret & Its Applicat, Hangzhou, Peoples R China

[2] Hangzhou Dianzi Univ, Informat Engn Coll, Hangzhou, Peoples R China

[3] Jiande Chaomei Daily Chem Co Ltd, Hangzhou, Peoples R China

来源：

JOURNAL OF ELECTROSTATICS | 2023年 / 121卷

关键词：

Respirators; Melt -blown polypropylene electret fabrics; Corona -charging technique; Electret characteristics; FILTER; DECAY;

D O I：

10.1016/j.elstat.2022.103782

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Melt-blown polypropylene (MBPP) electret fabrics are the heart material of respirators. Corona-charging is the most commonly used technique endowing MBPP fabrics with electret characteristics. However, corona-charged MBPP electret fabrics are difficult to meet the filtration efficiency standard requirement of KN99, N99 and FFP3 respirators. This paper's aim is to provide a better understanding of corona-charging process for MBPP electret fabrics by 6 corona-charging modes. The electret characteristics of MBPP fabrics, such as bipolar phenomenon of surface potential and correlation between filtration efficiency and charge density are investigated by measuring filtration efficiency, surface potential distribution, thermally stimulated discharge current, charge density.

引用

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