酞菁铜二磺酸改性聚苯胺的制备及耐蚀性能  

Preparation and Corrosion Properties of Polyaniline Doped with Copper Phthalocyanine Disulfonic Acid

作　　者：李小宝[1] 徐利[1] 刘怡宏[1] 廖婷[1] 李明田[1] 崔学军[1] 

机构地区：[1]四川理工学院材料科学与工程学院材料腐蚀与防护四川省重点实验室,自贡643000

出　　处：《中国腐蚀与防护学报》2016年第4期306-312,共7页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金项目(51303115);四川省教育厅项目(15ZB0205);大学生创新创业训练计划项目(201610622035)资助

摘　　要：以自制酞菁铜二磺酸(CuPc-(SO_3H)_2)为原料,采用"掺杂-脱掺杂-再掺杂"方法对本征态聚苯胺(EBPANI)进行导电改性。IR和UV-Vis分析表明,CuPc-(SO_3H)_2成功地对EBPANI进行了掺杂改性。四探针仪测试改性后的聚苯胺电导率为1.95 S/cm。通过电化学、耐酸性和中性盐雾实验等方法检测聚苯胺涂层的耐蚀性能,结果表明,CuPc-(SO_3H)_2能有效地掺杂EBPANI,在5%(质量分数)HCl溶液中浸泡15 d和中性盐雾实验12.5 d,CuPANI涂层只出现少量气泡和8%的白霜,在3.5%NaCl溶液中CuPANI涂层使Fe的腐蚀电位从-0.849 V正移至-0.646 V,说明CuPANI涂层对钢基片具有良好的防腐蚀性。The copper phthalocyanine disulfonic acid CuPc-（SO3H）： （CuPANI） was prepared with direct fast turquoise blue GL as raw material, and then the CuPANI doped polyaniline was obtained by chemical reaction of eigenstate polyaniline （EBPANI） with CHPc-（SO3H）2 in N,N＇-dimethylfor- mamide. The doped polyaniline was characterization by IR, UV-Vis and four point probe. The coatings with EBPANI or CuPANI as filler and epoxy resin 44 （EP-44） and 107 glue as adhesives were prepared on the surface of pretreated steel sheets, while the corrosion behavior of the sheets with- out and with coatings with EBPANI and CuPANI in 3.5%NaCI solution was investigated by electro- chemical methods such as tafel polarization curve measurement, and alternating current impedance spectroscopy, respectively. The results indicated that the CuPANI doped polyaniline coating shows better anticorrosion performance.

关 键 词：涂层 聚苯胺 酞菁铜磺酸 导电 耐蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]