Zinc Surface Reformed with Natural Polyhydric Phenols and its Interface Structure

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  • 天然多価フェノール化合物による亜鉛表面の改質と界面構造
  • テンネン タカ フェノール カゴウブツ ニ ヨル アエン ヒョウメン ノ カイシツ ト カイメン コウゾウ

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Abstract

The surface of metallic zinc was coated with polyhydric phenols (urushiol and tannic acid) occurring in plants. The coating properties were evaluated by contact angles and corrosion resistance. The urushiol coating showed a high water-repellent property with a contact angle of over 90 degrees. The tannic acid coating was cross-linked with a diamine, giving a tough surface with improved corrosion resistance. The salt spray test showed that the exposure time with no rust formation extends over 48 hours. The above treatments were carried out in water for several tens of seconds at ambient temperature under atmospheric pressure. It was thus shown that the use of polyhydric phenols is a useful method of metal surface modification in view of recent interest in environmental protection against harmful chemicals.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 63 (9), 633-640, 2006

    The Society of Polymer Science, Japan

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