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000000017 001__ 17
000000017 037__ $$aENY-ARTICLE-2008-015
000000017 041__ $$aeng
000000017 100__ $$aMotyl, E$$uWroclaw University of Technology, Poland
000000017 245__ $$aEffect of Air Humidity on Charge Decay and Lifetime of PP Electret Nonwovens
000000017 260__ $$c2006-01-03
000000017 300__ $$a6p
000000017 500__ $$aFIBRES & TEXTILES in Eastern Europe, January / December 2006, Vol. 14, No. 5 (59)
000000017 520__ $$aThe effects of air humidity on the charge decay and lifetime of polypropylene (PP) electret nonwovens manufactured by the pneumothermic method are presented. The PP fabric samples were corona-charged from a needle electrode under high voltage. The thermally-stimulated equivalent surface voltages were measured at a linear heating rate in a temperature range from 293 K to 395 K. The results of the measurements showed that the equivalent voltage depends on the structural properties of the PP nonwovens as well as the conditions of formation. The selected electret nonwovens were next placed in a chamber whose humidity was controlled within a range of 39% to 94%, and the decay of the electret charge was measured and analysed. The results show that conditioning the samples at a higher humidity influences the changes of the equivalent voltage and the lifetime of the electret fibre.
000000017 6531_ $$aPP filtration fabric
000000017 6531_ $$acorona charging
000000017 6531_ $$aelectret
000000017 6531_ $$aelectric charge lifetime
000000017 6531_ $$arelative air humidity
000000017 700__ $$aLowkis, B$$uWroclaw University of Technology, Poland
000000017 8560_ $$fzbigniew.leonowicz@pwr.wroc.pl
000000017 8564_ $$uhttp://zet10.ipee.pwr.wroc.pl/record/17/files/$$zAccess to Fulltext
000000017 909CO $$ooai:zet10.pwr.wroc.pl:17$$pglobal
000000017 980__ $$aARTICLE