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Improvement of Protective Properties of Top Coatings Applied on Zinc-Rich Primer by 3-Aminopropyl-Triethoxysilan and 2-(Benzothialylthio) Succinic acid  

Trinh, Anh Truc (Laboratory for Protective coatings, Institute for Tropical Technology)
To, Thi Xuan Hang (Laboratory for Protective coatings, Institute for Tropical Technology)
Vu, Ke Oanh (Laboratory for Protective coatings, Institute for Tropical Technology)
Nguyen, Tuan Dung (Laboratory for Protective coatings, Institute for Tropical Technology)
Publication Information
Corrosion Science and Technology / v.3, no.3, 2004 , pp. 107-111 More about this Journal
Abstract
Corrosion resistance of coating system consisting of zinc-rich primer (ZRP) and topcoat based on polyurethane resin with the presence of 3-aminopropyl-triethoxysilan (APS) and 2-(benzothialylthio) succinic acid (BSA) was studied by electrochemical impedance and wet adhesion. The interface metal/primer/topcoat was analyzed by scanning electronic microscopy. It was found that the presence of APS and BSA improved adhesion and barrier property of the topcoats.
Keywords
electrochemical impedance; wet adhesion; zinc rich primer; topcoat;
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