コロナ荷電によるポリアルキルメタクリラート樹脂の表面電荷の減衰

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  • Decay of Surface Charge on Poly (alkyl methacrylate) s Produced by Corona Charging
  • コロナ カデン ニヨル ポリアルキルメタクリラート ジュシ ノ ヒョウメン デ

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The decay of surface charge and the thermally stimulated current (TSC) for corona charged poly (alkyl methacrylate) s were measured. The decay of surface charge decreased in order of poly (methyl methacrylate) (PMMA), poly (ethyl methacrylate) (PEMA), poly (butyl methacrylate) (PBMA), poly (isopropyl methacrylate) (PiPMA) and poly (tert-butyl methacrylate) (PtBMA). The surface charges on PiPMA and PtBMA were very stable, which appeared due to the low electric conductivity at room temperature. The decay of surface charges on PMMA, PEMA and PBMA might be caused due to the increase of heterocharge which produced by the orientation of dipoles under the innerfield of surface homo-charges. The TSC measured with a contactless electrode showed two peaks above room temperature, except PBMA. The peak at the lower temperature is caused by the polarization current due to the orientation of dipoles. The second peak at the higher temperature is caused by the neutralizing current of homocharge due to increased conductivity. The decay of surface charge on corona-charged PMMA decreased greatly by annealing. The introduction of oriented dipoles by annealing stabilized the surface homocharge.

収録刊行物

  • 高分子論文集

    高分子論文集 36 (10), 667-670, 1979

    公益社団法人 高分子学会

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