CeO2@Zr-MOF复合材料的制备及其对环氧涂层保护性能的提升作用

陈丽娟, 晁刘伟, 赵景茂

Preparation of CeO2@Zr-MOF Composites and Their Effect on Corrosion Protectiveness of Epoxy Coatings on Galvanized Steel Plate

CHEN Lijuan, CHAO Liuwei, ZHAO Jingmao

表1 3.5%NaCl溶液中浸泡不同时间纯EP涂层以及不同添加量的CeO2@Zr-MOF/EP涂层在ZMA镀层钢板上的EIS拟合参数

Table 1 EIS fitting parameters of pure EP coatings immersed in 3.5%NaCl solution for different times and different additions of CeO2@Zr-MOF/EP coatings on ZMA coated steel

Samples Time / d CPEc Rc / Ω·cm2 Cc / F·cm2 CPEdl Rct / Ω·cm2 Cc / F·cm2 Y1 / Ω-1·cm-2·s n n1 Y2 / Ω-1·cm-2·s n n2 EP 0 7.00 × 10-11 1 4.24 × 108 7.00 × 10-11 1.34 × 10-10 1 7.59 × 109 1.34 × 10-10 12 8.99 × 10-11 0.97 4.11 × 108 8.12 × 10-11 1.44 × 10-10 0.84 8.05 × 109 1.48 × 10-10 24 6.54 × 10-11 0.98 4.61 × 108 6.09 × 10-11 8.37 × 10-11 0.79 8.18 × 108 8.36 × 10-11 36 7.08 × 10-11 1 8.91 × 107 7.08 × 10-11 1.73 × 10-10 1 3.30 × 108 1.73 × 10-10 48 9.71 × 10-11 0.95 3.35 × 107 7.38 × 10-11 2.45 × 10-7 0.78 8.14 × 107 3.30 × 10-7 60 7.83 × 10-11 0.96 3.16 × 107 6.49 × 10-11 1.60 × 10-8 0.33 1.40 × 107 3.63 × 10-8 0.5%CeO2@Zr-MOF 0 6.03 × 10-11 1 1.94 × 109 6.03 × 10-11 3.89 × 10-10 0.77 3.03 × 1010 5.44 × 10-11 12 6.69 × 10-11 0.97 2.57 × 109 6.34 × 10-11 1.13 × 10-10 0.76 8.00 × 1010 1.11 × 10-10 24 6.66 × 10-11 0.97 3.86 × 109 6.24 × 10-11 3.92 × 10-10 0.53 9.06 × 1010 2.45 × 10-10 36 6.52 × 10-11 0.98 4.60 × 109 6.31 × 10-11 3.16 × 10-11 0.74 1.68 × 1011 3.63 × 10-11 48 4.87 × 10-11 1 2.60 × 109 4.87 × 10-11 4.27 × 10-11 0.74 1.60 × 1011 5.47 × 10-11 60 4.69 × 10-11 0.98 3.21 × 109 4.72 × 10-11 3.31 × 10-11 1 3.94 × 1010 3.31 × 10-11 1%CeO2@Zr-MOF 0 5.70 × 10-11 1 4.49 × 109 5.70 × 10-11 1.47 × 10-11 1 2.93 × 1010 1.47 × 10-11 12 7.00 × 10-11 1 6.73 × 109 7.00 × 10-11 7.61 × 10-11 1 8.90 × 1010 7.61 × 10-11 24 5.01 × 10-11 0.99 7.69 × 109 4.98 × 10-11 1.18 × 10-10 0.70 9.85 × 1010 1.19 × 10-10 36 6.44 × 10-11 0.97 6.27 × 109 6.07 × 10-11 2.47 × 10-11 0.63 1.43 × 1011 3.74 × 10-11 48 5.84 × 10-11 1 2.39 × 109 5.84 × 10-11 3.58 × 10-11 0.72 1.34 × 1011 4.99 × 10-11 60 6.20 × 10-11 0.98 6.11 × 109 5.98 × 10-11 2.70 × 10-11 0.68 1.11 × 1011 3.86 × 10-11 2%CeO2@Zr-MOF 0 6.68 × 10-11 0.97 4.34 × 109 6.69 × 10-11 2.54 × 10-11 0.96 6.34 × 1010 2.58 × 10-11 12 6.80 × 10-11 0.97 5.74 × 109 6.70 × 10-11 2.46 × 10-11 0.64 8.27 × 1010 1.10 × 10-11 24 4.90 × 10-11 0.98 6.15 × 109 4.75 × 10-11 1.03 × 10-11 0.85 1.04 × 1011 1.10 × 10-11 36 6.75 × 10-11 0.97 1.72 × 109 6.38 × 10-11 4.79 × 10-11 0.67 2.11 × 1010 4.83 × 10-11 48 4.68 × 10-11 1 4.54 × 109 4.68 × 10-11 1.81 × 10-11 1 1.52 × 1010 1.81 × 10-11 60 9.64 × 10-11 0.98 4.74 × 109 9.52 × 10-11 3.85 × 10-11 0.80 1.87 × 1010 3.62 × 10-11