Charging characteristics for electret filter materials

摘要: Abstract In order to save energy at the time of dust collection, authors have tried provide as much charge possible electret filter. Polypropylene (PP) (nonwoven, by melt-blowing) and polytetrafluoroethylene (PTFE) (layering PTFE fibers in wet system heat dried) were used a sample. High voltage DC corona, pulse corona with applied sample materials. The discharge characteristics investigated larger for results indicate that somewhat slower rise superimposition provides large charge. maximum obtained was approx. 45 μC/m 2 case PP 10 PTFE.