Different electrostatic methods for making electret filters

被引:302
作者
Tsai, PP
Schreuder-Gibson, H
Gibson, P
机构
[1] Univ Tennessee, Text & Nonwovens Dev Ctr, TANDEC, Knoxville, TN 37996 USA
[2] USA, Natick Res Dev & Engn Ctr, Soldier Syst Command, Natick, MA 01760 USA
关键词
corona charging; tribocharging; electrostatic spinning; electret; filter;
D O I
10.1016/S0304-3886(01)00160-7
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
Three charging techniques (viz., corona charging, tribocharging, and electrostatic fiber spinning) were used to charge fibers or fabrics of different polymer types. Corona charging is suitable for charging monopolymer fiber or fiber blend, or fabrics. Tribocharging is only appropriate for charging fibers with dissimilar electronegativity. Electrostatic fiber spinning combines the charging of polymer and the spinning of the fibers as a one-step process. It was observed that two dissimilar fibers following tribocharging had higher filtration efficiency than the corona-charged polypropylene fibers. An electrostatic spinning process produced nanofibers exhibiting extremely high efficiency by mechanical filtration mechanisms. Little charge was retained in electrospun polyethylene oxide fibers; however, polycarbonate and polyurethane retained a great amount of charge. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:333 / 341
页数:9
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