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首页> 外文期刊>International Journal of Electrochemical Science >Investigation of Corrosion Resistance of poly(o- phenylenediamine)-ZnO Composites on Stainless Steel
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Investigation of Corrosion Resistance of poly(o- phenylenediamine)-ZnO Composites on Stainless Steel

机译：聚（邻苯二胺）-ZnO复合材料在不锈钢上的耐蚀性研究

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摘要

The poly(o-phenylenediamine)-ZnO (PoPD-ZnO) composite were synthesized by in-situpolymerization, and the waterborne polyurethane was used as the binder. The corrosion inhibitionperformance of the PoPD-ZnO composite coating on stainless steel was investigated. The structures ofhomopolymer PoPD and PoPD-ZnO composite were characterized by Fourier transform infraredspectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Cyclicvoltammetry demonstrates the redox properties and stability of the composite. After soaking in 3.5%NaCl for a certain period of time, the corrosion resistance of the polymer coating was studied bypotentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results showthat the homopolymer PoPD coating and the PoPD-ZnO composite coating can protect the stainlesssteel. The corrosion rate of the PoPD-ZnO composite coating with good corrosion resistance is 1.9% ofbare steel. In addition, the addition of nano-ZnO facilitates the formation of a compact and low-defectcoating, thereby impeding the erosion of corrosive media and improving the corrosion resistance ofPoPD coatings.
机译：通过原位聚合合成聚（邻苯二胺）-ZnO（PoPD-ZnO）复合材料，并将水性聚氨酯用作粘合剂。研究了PoPD-ZnO复合涂层在不锈钢上的缓蚀性能。通过傅立叶变换红外光谱（FTIR），X射线衍射（XRD）和扫描电子显微镜（SEM）对均聚物PoPD和PoPD-ZnO复合材料的结构进行了表征。循环伏安法证明了复合材料的氧化还原性能和稳定性。在3.5％NaCl中浸泡一定时间后，通过电位动力学极化和电化学阻抗谱（EIS）研究了聚合物涂层的耐腐蚀性。结果表明，均聚物PoPD涂层和PoPD-ZnO复合涂层可以保护不锈钢。具有良好耐腐蚀性的PoPD-ZnO复合涂层的腐蚀率为裸钢的1.9％。另外，纳米ZnO的添加有助于形成致密且低缺陷的涂层，从而阻止腐蚀介质的侵蚀并提高PoPD涂层的耐腐蚀性。

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