(1. 浙江工業(yè)大學(xué) 化學(xué)工程學(xué)院，杭州 310014；
2. 浙江工業(yè)大學(xué) 綠色化學(xué)合成技術(shù)國家重點實驗室培訓(xùn)基地，杭州 310014)
摘 要: 為了提高鋁基材料的抗腐蝕性能，采用插層復(fù)合法在鋁片表面制備具有良好韌性、耐磨性和耐鹽耐酸性能的蒙脫石/環(huán)氧樹脂復(fù)合涂層。研究不同膜厚對涂層在1.0 mol/L NaCl溶液和0.5 mol/L H2SO4溶液中抗腐蝕性能的影響。采用光學(xué)顯微鏡、小角X射線衍射、紅外光譜、SEM和TEM等手段表征防腐涂層的表面結(jié)構(gòu)、物相組成、化學(xué)組成和微結(jié)構(gòu)等特征；采用Tafel極化曲線和EIS交流阻抗圖譜等手段測試了其電化學(xué)防腐性能。結(jié)果發(fā)現(xiàn)：經(jīng)剝離改性后的蒙脫石(001)晶面間距從1.4490 nm擴大到了2.8504 nm。膜的厚度與其防腐性能密切相關(guān)；當(dāng)膜厚為0.66 mm時，其防腐性能較好，在NaCl溶液中的腐蝕電位為0.8794 V，腐蝕電阻為3412 Ω·cm2；在H2SO4溶液中的腐蝕電位為0.5285 V，腐蝕電阻為5313 Ω·cm2。
關(guān)鍵字: 蒙脫石；環(huán)氧樹脂；納米復(fù)合；涂層；電化學(xué)性能
（1. School of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2. State Key Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China）
Abstract:In order to improve the corrosion resistance of aluminum-based materials, a Mnt/epoxy anti-corrosion composite membrane with good smoothness, wear property and resistance to acidic and salty corrosion was prepared by intercalation composite method. The effect of membrane thickness on the corrosion resistance of the membrane was emphatically studied in NaCl(1.0 mol/L) and H2SO4(0.5 mol/L) solution. The surface structure, crystal phase, chemical composition, microstructure of the anti-corrosion composite membrane were characterized by optical microscopy, small angle X-ray diffraction, FTIR, SEM and TEM. The results show that the interplanar distance of Mnt modified is expanded from 1.4490 nm to 2.8504 nm. The electrochemical corrosion resistance of the membrane was tested with Tafel polarization curves and EIS. The results show that the thickness of the membrane has a positive effect on its anti-corrosion performance. When the thickness is 0.66 mm, the corrosion potential and resistance are 0.8794 V and 3412 Ω·cm2 in NaCl solution, respectively, and they are 0.5285 V and 5313 Ω·cm2 in H2SO4 solution. These results indicate that the membrane exhibits excellent anticorrosive property, which can be found wide applications.
Key words: montmorillonite; epoxy resin; nanocomposite; anticorrosive membrane; electro-chemical performance
