Sinusoidal and Triangular High-Voltage Neutralizers for Accelerated Discharge of Nonwoven Fibrous Dielectrics

摘要: Electric charge accumulation on fibrous dielectric media during manufacturing processes can easily attain high levels of electrostatic hazard. In a previous paper, the authors addressed problem accelerated discharge such materials using commercial ion generator. The aim this paper is to evaluate various factors that influence efficiency neutralization performed wire-type corona electrode energized from either sinusoidal or triangular ac high-voltage supply. experiments were 400-μm-thick nonwoven sheets polypropylene and polyester, in ambient air. samples charged for 10 s triode-type system negative polarity. surface potential medium, which was contact with grounded electrode, then measured an voltmeter. After min, medium moved beneath neutralizing connected amplifier. quantified by ratio between after prior sample exposure discharge. experimental design methodology employed evaluating effects two factors, namely, amplitude (range: 16-24 kV) frequency 20-400 Hz), voltage. at fabrics found vary insignificantly thermal conditioning signal waveform but significantly lower higher frequencies amplitudes.