装载缓蚀剂的纳米SiO_2对环氧涂层耐腐蚀性的影响  

Influence of Corrosion Inhibitor Carriered Nano-SiO_2 on Corrosion Resistance of Epoxy Coating

作　　者：孙伟[1] 尹桂来[2] 刘福春[1] 唐囡[2] 韩恩厚[1] 万军彪[2] 柯伟[1] 邓静伟[2] 

机构地区：[1]中国科学院金属研究所中国科学院核用材料与安全评价重点实验室,沈阳110016 [2]国网江西省电力科学研究院,南昌330096

出　　处：《中国腐蚀与防护学报》2015年第5期447-454,共8页Journal of Chinese Society For Corrosion and Protection

基　　金：国家电网公司科技项目(521820130014);国家重点基础研究发展计划项目(2014CB643304);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)资助

摘　　要：以SiO2作为载体,将缓蚀剂8-羟基喹啉在纳米SiO2中进行负载,负载后的粉体采用红外光谱和紫外吸收光谱进行表征。将装载后的纳米SiO2粉体加入到环氧涂料中,制备出含装载缓释剂8-羟基喹啉的纳米SiO2的环氧树脂涂层,通过盐雾实验和电化学阻抗谱实验测试其对环氧涂层耐蚀性的影响。结果表明,缓蚀剂8-羟基喹啉成功装载到SiO2孔道中,纳米SiO2装载缓释剂8-羟基喹啉提高了环氧涂层的耐蚀性,其中添加5%(质量分数)SiO2装载缓蚀剂8-羟基喹啉粉体的环氧涂层耐蚀性最高,原因是缓蚀剂8-羟基喹啉从SiO2孔道中释放到涂层并渗透到基体表面,对基体起到缓蚀作用,提高了涂层的耐腐蚀性能。The 8- hydroxyquinoline（8Q）, as a sustained- release corrosion inhibitor was deposited onto nano- particles of mesoporous- silica to prepare 8- hydroxyquinoline- silica（8Q- SiO2） powder.Then the powder was used as pigment to modify epoxy resin to prepare 8Q-SiO2-epoxy resin coating. The prepared 8Q-SiO2 was characterized by means of infrared spectrum and ultraviolet absorption spectrum. The corrosion performance of the 8Q- SiO2- epoxy resin coating was examined by salt spray test and electrochemical impedance measurement. The results revealed that the 8Q can enhance the corrosion resistance of epoxy coating, and among others the epoxy coating with 5%（mass fraction） 8Q-SiO2 exhibits the highest corrosion resistance, which may be ascribed to that the 8 Q may slowly release from the mesoscopic channels within SiO2 into the epoxy coating and then arrive at the interface coating/substrate to provide corrosion inhibition for the substrate.

关 键 词：8-羟基喹啉 纳米SIO2 环氧涂层 输变电设备 防腐蚀材料 

分 类 号：TB174[生物学—生物工程]