Effect of Ternary Copolymers Composed of Acrylic Acid, Acrylamide and Sodium Styrene Sulfonate on Corrosion of Mild Steel in Cooling Water System

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  • Sekine Isao
    Faculty of Science and Technology, Science University of Tokyo Institute of Colloid and Interface Science, Science University of Tokyo
  • Yuasa Makoto
    Faculty of Science and Technology, Science University of Tokyo Institute of Colloid and Interface Science, Science University of Tokyo
  • Wakayama Atsuko
    Faculty of Science and Technology, Science University of Tokyo
  • Wake Toshiharu
    Japan Organo Corp.
  • Murata Hiromichi
    Japan Organo Corp.

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Other Title
  • 冷却水系における軟鋼の腐食に対するアクリル酸/アクリルアミド/スチレンスルホン酸ナトリウム系三元共重合体の腐食抑制効果
  • レイキャクスイ ケイ ニ オケル ナンコウ ノ フショク ニ タイスル アクリ

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Abstract

Ternary copolymers composed of acrylic acid, acrylamide and sodium stylene sulfonate [P (AA/AAm/NaSS)] were synthesized and these inhibition effects on corrosion of mild steel in cooling water system were investigated by physicochemical methods. P (AA/AAm/NaSS) acted as an adsorption-type inhibitor in solutions with low concentrations of ionic species and suppressed mainly the anodic reaction during corrosion of mild steel. In solutions with high concentrations of ionic species, the corrosion of mild steel was inhibited by the formation of the film mixed with scale and P (AA/AAm/NaSS) on the steel when 25mg/l or less of the copolymer was containded. By contrast, the adsorption of P(AA/AAm/NaSS) on the steel surface inhibited the corrosion when 75mg/l or more of the copolymer was contained.

Journal

  • Zairyo-to-Kankyo

    Zairyo-to-Kankyo 47 (11), 708-715, 1998

    Japan Society of Corrosion Engineering

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