Preparation of epoxy microcapsule based self-healing coatings and their behavior |
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| Authors: | Xiuxiu Liu Hairui Zhang Jixiao Wang Zhi Wang Shichang Wang |
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| Affiliation: | 1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China;2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, PR China;3. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, PR China |
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| Abstract: | In this paper, epoxy microcapsules were prepared by interfacial polymerization of epoxy resin droplets with ethylenediamine (EDA), and the capsules were characterized by scanning electron microscope (SEM). Then, the coatings containing epoxy microcapsules were applied on carbon steels, and their behavior and self-healing effect were investigated by electrochemical impedance spectroscopy (EIS) technique and SEM observation. The experimental results demonstrate that the artificial scratches were successfully healed in about 4-h after made. Furthermore, coating prepared from 20 wt.% epoxy microcapsules shows the best performance among all the prepared coatings. |
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| Keywords: | Microcapsule Epoxy resin Self-healing coating Interfacial polymerization |
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