粉体工学会誌
Online ISSN : 1883-7239
Print ISSN : 0386-6157
高分子膜ターゲットへの微粒子の衝突による帯電
松坂 修二西田 知則後藤 佳昭増田 弘昭
著者情報
ジャーナル フリー

37 巻 (2000) 10 号 p. 728-733

詳細
PDFをダウンロード (2567K) 発行機関連絡先
抄録

Impact electrification between fine particles and polymer film has been investigated both theoretically and experimentally. A powder, fly ash of 12μm in mass median diameter, was dispersed and accelerated in airflow, and then the particles were impacted on a target whose frontal surface was covered with a polymer film and the rear side was a metal plate. The films used were in the range of 25-250μm in thickness. The rear metal plate was grounded and the electric currents caused by impact electrification were measured by an electrometer. Two types of currents were detected, namely induced current and conduction current. The induced current was due to the charge accumulating on the film, while the conduction current was due to the dielectric breakdown arising from the particle impact. Using a film with small artificial holes, conduction current was detected. This fact shows that insulating material can be utilized as an effective charging wall as long as the charge accumulation in the material is well suppressed.

著者関連情報
© 粉体工学会
前の記事 次の記事

閲覧履歴
feedback
Top