装载8-羟基喹啉的纳米SiO_2/环氧涂层的耐腐蚀机理研究  

Investigation on Anti-corrosion Mechanism of 8-hydroxyquinoline Modified Nano-silica/epoxy Coatings

作　　者：孙伟[1] 刘福春[1] 揭敢新 柯伟[1] 韩恩厚[1] 王俊 黄海军 都郁 SUN Wei;LIU Fuchun;JIE Ganxin;KE Wei;HAN En-Hou;WANG Ju;HUANG Haijun;DU Yu(Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;State Key Laboratory of Environmental Adaptability for Industrial Products, China National Electric Apparatus Research Institute Co., Ltd, Guangzhou 510633, China)

机构地区：[1]中国科学院核用材料与安全评价重点实验室中国科学院金属研究所,沈阳110016 [2]工业产品环境适应性国家重点实验室中国电器科学研究院有限公司,广州510663

出　　处：《材料研究学报》2017年第11期818-826,共9页Chinese Journal of Materials Research

基　　金：广东省中国电器院风电装备腐蚀控制关键技术院士工作站项目(2013B090400023);广州市产学研协同创新联盟专项(201604046014)~~

摘　　要：使用纳米SiO_2作为载体、8-羟基喹啉作为客体制备纳米SiO_2/8-羟基喹啉组合物,将其添加到环氧树脂中制备出装载8-羟基喹啉的纳米SiO_2/环氧涂层。对其进行盐雾和电化学阻抗谱实验,研究了装载8-羟基喹啉的纳米SiO_2/环氧涂层的耐腐蚀机理。结果表明,纳米SiO_2/8-羟基喹啉组合物提高了环氧涂层的耐腐蚀性能,添加5%(质量分数)纳米SiO_2/8-羟基喹啉组合物的环氧涂层的耐腐蚀性能较优。8-羟基喹啉从纳米SiO_2孔道中释放并渗透到涂层与钢基材的界面形成含铁的铬合物膜,阻挡了腐蚀介质的渗入,使Q235钢基体的耐腐蚀性能提高。Composites of 8-hydroxyquinoline/nano-SiO2 were prepared with nano-SiO2 as carrier and8-hydroxyquinoline as modifier. Then the composistes were blended with epoxy resin to form the nanocomposite epoxy coating. The corrosion performance of the prepared composite coating was investigated by means of salt spray test and electrochemical impedance spectroscopy. Results show that composites of 8-hydroxyquinoline/nano-SiO2 can improve the corrosion resistance of the epoxy coatings, among others the coating with 5%（mass fraction） 8-hydroxyquinoline/nano-SiO2 was the optimal. The relevant mechanism may be ascribed to the fact that 8-hydroxyquinoline could release from pores of nano-SiO2 and then penetrate to the interface coating/steel substrate forming Fe-containing complex, thus improving the corrosion resistance of the steel substrate.

关 键 词：材料失效与保护 风电设备 纳米SiO2 钢基体 缓释剂作用机理 

分 类 号：TB304[一般工业技术—材料科学与工程]