Author/Authors :
Zhou, Xiaowei School of Materials Science and Engineering - Jiangsu University of Science and Technology - Zhenjiang - Yangzhou, China , Xu, Lingli School of Materials Science and Engineering - Jiangsu University of Science and Technology - Zhenjiang - Yangzhou, China , Chen, Zheng School of Materials Science and Engineering - Jiangsu University of Science and Technology - Zhenjiang - Yangzhou, China , Huang, Fei School of Materials Science and Engineering - Jiangsu University of Science and Technology - Zhenjiang - Yangzhou, China , Zuo, Yinze School of Materials Science and Engineering - Jiangsu University of Science and Technology - Zhenjiang - Yangzhou, China , Shi, Xingling School of Materials Science and Engineering - Jiangsu University of Science and Technology - Zhenjiang - Yangzhou, China
Abstract :
The development of waterborne coating is essentially important for environmental protection, and cross-linking agent is of greatsignificance for ensuring corrosion resistance of the coating. In this work, tetrabutyl titanate was modified by ethylene glycoland tris(2-hydroxyethyl) amine and used for the solidification of waterborne acrylic-epoxy resin. Fourier-transform infraredspectroscopy (FTIR) analysis revealed that the agent reacted with OH groupsfirst to cross-link the resin preliminarily, and then,when the amount of agent was further increased, the amino groups opened epoxide rings resulting in a secondary cross-link.Field emission scanning electron microscope (FESEM) observation and electrochemical impedance spectroscopy (EIS) testfound that, when the cross-linking agent was used at 6%, the coating remains intact and kept an impedance of as high as108Ωcm2even after being immersed in NaCl solution for 30 days. Copper-accelerated acetic acid-salt spray (CASS) testconfirmed that the coating containing 6% cross-linking agent provided the best protection for the carbon steel substrate.
Keywords :
Corrosion Resistance , Waterborne Epoxy Resin Coating Cross-Linked , Modified Tetrabutyl Titanate , FTIR , FESEM , 2-hydroxyethyl
