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Synthesis of hydrophobic fluoro-substituted polyaniline filler for the long-term anti-corrosion performance enhancement of epoxy coatings

Cheng Li,Yuan Li,Xiao Wang,Sicheng Yuan,Dan Lin,Yanji Zhu,Huaiyuan Wang

It is difficult for ordinary coatings to meet the long-term anti-corrosion requirements of modern industry. Incorporating high-performance fillers into those coatings is considered as an effective way to solve the problem. Herein, a new hydrophobic fluoro-substituted polyaniline (PFAN) filler with high-performance was successfully synthesized. Results showed that the filler synthesized at 0 ℃ exhibited nearly two-dimensional micro-fibrous morphology and good solubility in some common solvents. Results also revealed that the fabricated filler could passivate iron and prevent electrolyte penetration. All these advantages endowed the epoxy coating containing 3 wt% PFAN with exceptional long-term anti-corrosion performance.