The corrosion protective performance of the epoxy coatings containing HTBTSA-S were evaluated by electrochemical impedance spectroscopy, adhesion measurement. The results showed that the presence of HT-BTSA-S improved protection performance of epoxy coating and the best protection was obtained with HT-BTSA modified with 5 % APS. | VNU Journal of Science: Natural Sciences and Technology, Vol. 33, No. 4 (2017) 1-7 Influence of Hydrotalcite Containing Corrosion Inhibitormodified by Silane on Corrosion Protection Performance of Epoxy Coating Nguyen Tuan Anh*, Ngo Thi Hoa, To Thi Xuan Hang, Nguyen Thuy Duong, Trinh Anh Truc Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam Received 18 August 2017 Revised 30 August 2017; Accepted 26 October 2017 Abstract: Zinc aluminum hydrotalcite containing 2-benzothiazolythio-succinic acid (HT-BTSA) and modified by 2-aminoethyl-3-aminopropyltrimethoxysilane (APS) at different concentrations (3%, 5% and 10%). APS modified HT-BTSA (HT-BTSA-S) was incorporated in epoxy coatings at 3% concentration. The corrosion protective performance of the epoxy coatings containing HTBTSA-S were evaluated by electrochemical impedance spectroscopy, adhesion measurement. The results showed that the presence of HT-BTSA-S improved protection performance of epoxy coating and the best protection was obtained with HT-BTSA modified with 5 % APS. Keywords: Epoxy coating, hydrotalcite, silane modification, corrosion inhibitor, corrosion protection. 1. Introduction protective properties of polymer nanocomposites depends on their dispersion degree in the polymer matrix [6-8]. In order to improve the dispersion of hydrotalcite in polymer matrix, the hydrotalcite surface can be modified by surfactants or silane compounds [9, 10]. In our previous studies, hydrotalcites intercalated with 2-benzothiazolylthio-succinic acid (HT-BTSA) was prepared and applied in epoxy coatings. The presence of HT-BTSA improved significantly the corrosion protection of epoxy coating [11, 12] In this work, hydrotalcites intercalated with 2-benzothiazolylthio-succinic acid (HT-BTSA) modified by silane at different concentrations were prepared. Corrosion protection of epoxy Organic coatings are widely used for corrosion protection of metal surfaces .
