不織布孔内に限定された放電における放電状態の測定

摘要

大気圧放電による高分子素材の表面処理方法としてコロrnナ放電やグロー放電が利用されている。これらの方法rnは大気圧下でプロセスの操作が可能であるため操作性の向rn上，高いガス濃度による反応速度の向上が達成あるいは期rn待されている。%The restricted dielectric barrier discharge in nonwoven pores has been investigated by observation of the current pulse, the Lissajous figure and light emissions. The current pulse measurement revealed that homogeneity of the discharge was relatively high and the amount of individual pulse was quite small on the order of O.OlnC. Such a small current pulse demonstrates that nonwoven fiber is effective as a dielectric barrier. Analysis of the Lissajous figure, indicates the calculated value of the gap voltage for the discharge starting point of nonwoven fiber layers is close to what was predicted using the Paschen curve. On the other hand, the measured value of the gap voltage in the Lissajous figure is larger than its calculated value, so the surface charge on the dielectrics dissipated relatively fast. The observations of light emissions also showed a high homogeneity.