聚吡咯–聚N-甲基吡咯复合涂料的制备及防腐性能  

Preparation of polypyrrole–poly(N-methylpyrrole) composite coating and its anticorrosion performance

作　　者：王发龙[1] 郑燕升[1,2] 莫春燕[1] 胡传波[1] 莫倩[1] 

机构地区：[1]广西科技大学生物与化学工程学院,广西柳州545006 [2]广西科技大学鹿山学院,广西柳州545616

出　　处：《电镀与涂饰》2015年第14期770-776,共7页Electroplating & Finishing

基　　金：广西教育厅科研项目(2014GXNSA013134)

摘　　要：以三氯化铁为氧化剂,对甲苯磺酸为掺杂剂,采用化学氧化聚合法制得均聚物聚吡咯(PPy)、聚N-甲基吡咯(PNMPy)和共聚物聚吡咯–聚N-甲基吡咯(PPy–PNMPy)。通过扫描电镜、X射线衍射仪、紫外可见分光光度计、傅里叶变换红外光谱仪表征了3种聚合物的微观结构。采用电化学方法和腐蚀溶液浸泡法对比研究了裸钢片、PU(聚氨酯)涂层以及PU–PPy、PU–PNMPy和PU–PPy–PNMPy复合涂层的防腐性能。结果表明,共聚物PPy–PNMPy的致密性优于均聚物PPy和PNMPy。PU–PPy–PNMPy复合涂层的防腐性能和力学性能最优。Homopolymers including polypyrrole （PPy） and poly（N-methylpyrrole） （PNMPy） and copolymer of pyrrole and N-methylpyrrole （PPy-PNMPy） were prepared by chemical oxidation polymerization using ferric chloride as oxidant and p-toluenesulfonic acid as dopant. The microstructure of the three kinds of polymers were characterized by scanning electron microscopy, X-ray diffraction, ultraviolet-visible spectrophotometry, and Fourier transform infrared spectrometry. The corrosion resistance of carbon steel plate as well as PU （polyurethane） coating and PUPPy, PU-PNMPy, and PU-PPy-PNMPy composite coatings on it were comparatively studied by electrochemical methods and corrosive solution immersion tests. The results showed that the PPy-PNMPy copolymer has better compactness than PPy and PNMPy homopolymers and the best anticorrosive and mechanical performances.

关 键 词：吡咯 N-甲基吡咯 共聚物 化学氧化聚合 防腐 

分 类 号：TG178[金属学及工艺—金属表面处理] TQ317.9[金属学及工艺—金属学]