Abstract
Polyaniline/organophilic montmorillonite (PANI/OMMT) composite powders were synthesized by in situ intercalation polymerization and were added to the epoxy coating as an anti-corrosive pigment. Fourier translation infrared spectroscopy (FT-IR), X-ray diffraction, and contact angle test were used to characterize the PANI/OMMT powders. The epoxy coating containing the PANI/OMMT powders was studied by electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and pull-off adhesion test. The results indicated that a unique combination of OMMT and PANI was realized by in situ intercalation polymerization, that the hydrophobic property of PANI/OMMT powders was enhanced and PANI/OMMT powders had good compatibility with epoxy resin, and that the anti-corrosive property of PANI/OMMT coating was better than that of epoxy resin coating.
Acknowledgments
The authors acknowledge the financial support of the Fundamental Research Funds for the Central Universities (HEUCF201310023 and HEUCF102012001), the State Grid Practical Project (Investigation on the Key Technologies on Development and Application of Anticorrosion Material of Power Transmission and Transformation Equipment; 521820130014), National Basic Research Program of China, Ministry of Science and Technology China under contract 2014CB643301, and the Key Laboratory of Superlight Material and Surface Technology (Harbin Engineering University), Ministry of Education.
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