電子線グラフト重合によるポリ塩化ビニル樹脂被覆鋼板への帯電防止性の付与

概要

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It was found that surface resistivity of poly (vinyl chloride) (PVC) coated steel sheets is largely reduced by an alkali treatment after electron beam induced graft-polymerization onto PVC, and that anti static proprety is provided to the PVC film. The following results were gained about the mechanism of conductivity for the PVC film. 1) By the treatment of methacrylic acid grafted layer with KOH aqueous solution, the graft layer becomes hydrophlic. This is supported by the analytical results of IR and EPMA that the graft layer is substituted with pottasium. 2) Regardless of the KOH treatment conditions, an saturated surface resistivity exits. As the thickness of graft layer increases, saturated surface resistivity decreases. As the atomic weight of alkali metal increases (the radius of the hydrated ion decreases), surface resistivity and saturated surface resistivity decrease. 3) Surface resistivity increases as relative humidity decreases. It is assumed that the conductivity is given by the increase in mobility of the hydrated alkali ion when free water in the graft layer increases.
社団法人日本鉄鋼協会の論文
1995-11-01