Environmental friendly poly (propylene carbonate)-based waterborne polyurethane (PPC-based WPU) is prepared with PPC and isophorone diisocyanate (IPDI) as the soft segment and the hard segment, respectively. In this reaction system, 2,2-dimethylolbutyric acid (DMBA) is used as the hydrophilic donor and trimethylolpropane (TMP) as the crosslinking agent. The effect of co-doping of layered montmorillonite (MMT) and mesoporous material MCM-41 on corrosion resistance of PPC-based WPU resin was studied. The properties of the samples were characterized with N₂ physical adsorption, XRD, FT-IR, TG-DTA, DSC and water absorption testing. Potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS) and salt spray test were employed to investigate the corrosion performance of all the coatings. The results of XRD indicate that the MMT in the composite polyurethane resin is peeled off and MCM-41 maintains the hexagonal framework structure after grinding. Compared with the WPU coatings with MMT or MCM-41 single incorporation, those with MMT and MCM-41 co-incorporation show the best corrosion resistance, which is due to the different interface structure between filler and resin matrix.

以PPC和异佛尔酮二异氰酸酯(IPDI)分别作为软链段和硬链段制备环保型聚碳酸亚丙酯基水性聚氨酯(PPC-based WPU)。在该反应体系中，2,2-二羟甲基丁酸（DMBA）用作亲水供体，三羟甲基丙烷（TMP）用作交联剂。研究了层状蒙脱石(MMT)与介孔材料MCM-41共掺杂对PPC基WPU树脂耐腐蚀性能的影响。用N ₂表征样品的性质物理吸附、XRD、FT-IR、TG-DTA、DSC和吸水率测试。采用动电位极化曲线、电化学阻抗谱（EIS）和盐雾试验研究了所有涂层的腐蚀性能。XRD结果表明复合聚氨酯树脂中的MMT剥离，MCM-41研磨后仍保持六方骨架结构。与单掺 MMT 或 MCM-41 的 WPU 涂层相比，MMT 和 MCM-41 共掺的 WPU 涂层表现出最好的耐腐蚀性，这是由于填料和树脂基体之间的界面结构不同。