刘丹-聚邻甲苯胺防腐涂料的制备及性能研究定稿

学科分类号150.4530本科毕业论文题目聚邻甲苯胺防腐涂料的制备及性能研究姓名刘丹学号1108040540092院（系）化学与生命科学学院专业化学年级2011级指导教师周进康职称教授二○一五年五月贵州师范学院本科毕业论文（设计）诚信声明本人郑重声明：所呈交的本科毕业论文(设计)，是本人在指导老师的指导下，独立进行研究工作所取得的成果，成果不存在知识产权争议，除文中已经注明引用的内容外，本论文不含任何其他个人或集体已经发表或撰写过的作品成果。对本文的研究做出重要贡献的个人和集体均已在文中以明确方式标明。本人完全意识到本声明的法律结果由本人承担。本科毕业论文作者签名：年月日I目录摘要.............................................................................................................................................1Abstract............................................................................................................................................20引言...........................................................................................................................................31试验部分...................................................................................................................................41.1仪器与试剂...........................................................................................................................41.2聚邻甲苯胺的合成...............................................................................................................41.3聚邻甲苯胺涂料的制备.......................................................................................................51.4涂层试样的制备...................................................................................................................51.5涂层试样腐蚀行为测试.......................................................................................................51.5.1物理性能测定...............................................................................................................51.5.2涂层试样在酸碱盐溶液中腐蚀行为测定...................................................................61.5.3电化学方法测定...........................................................................................................62结果与讨论.................................................................................................................................62.1聚邻甲苯胺结构及涂层试样分析.......................................................................................62.1.1聚邻甲苯胺结构分析...................................................................................................62.1.2聚邻甲苯胺涂层试样外观图片...................................................................................72.2聚邻甲苯胺涂层试样的物理性能......................................................................................82.3聚邻甲苯胺涂层试样在酸、碱、盐中的腐蚀行为..........................................................92.4聚邻甲苯胺涂层试样的电化学分析..................................................................................92.4.1开路电位分析...............................................................................................................92.4.2Tafel极化曲线分析....................................................................................................102.4.3交流阻抗分析............................................................................................................113结论...........................................................................................................................................14参考文献.......................................................................................................................................15致谢.........................................................................................................................................16贵州师范学院毕业论文11摘要采用化学氧化聚合法，以聚邻甲基苯胺为功能单体，过硫酸铵为氧化剂，以HCl、HClO4、H2SO4掺杂合成了掺杂态聚邻甲基苯胺。通过紫外、红外谱对聚邻甲基苯胺的结构进行表征。将涂抹含有POT和掺杂POT/环氧树脂复合涂料的冷轧钢片涂层试样，通过附着力、耐冲击性、柔韧性等物理性能测定，在酸、碱、盐中溶液的腐蚀行为的测定，以及浸泡在质量分数为3.5%NaCl溶液中，运用开路电位、极化曲线(Tafel)、交流阻抗(EIS)等电化学方法来评价涂层的防腐性能。结果表明，H2SO4掺杂聚邻甲基苯胺(POT-H2SO4)的物理性能和防腐性能都较好，开路电位达到-0.435V，腐蚀电流最低为2.108×10-7A,腐蚀电位最高为-0.596V，交流阻抗幅值达到4.5×105ohm·cm2。关键词：聚邻甲苯胺；掺杂；防腐涂料；制备；性能贵州师范学院毕业论文22AbstractBychemicaloxidativepolymerization,withpolyo-toluidineasfunctionalmon-omer,ammoniumpersulfateasoxidantwithHCl,HClO4,H2SO4dopedsynthesisofdopedpoly-o-methylaniline.BymeansofUVandIRspectrumwereusedtocharac-terizethestructureofpoly-o-methylaniline.TheapplicatorcontainingPOTanddopedPOT/epoxyresincompositecoatingcold-rolledsteelsheetcoatedspecimen,throughthedeterminationofadhesion,impactresistance,flexibilityandotherphysicalproperties,determinationofcorrosionbehaviorinacid,alkali,salt,andsoakinginthemassfractionof3.5%NaClinsolution,usingtheopencircuitpotential,Polarizationcurves(Tafel),ACimpedance(EIS)andsoontheanticorrosionperfomanceofelect-rochemicalmethodstoevaluatethecoating.TheresultsshowedthatH2SO4dopedpoly-o-toluidine(POT-H2SO4)onthephysicalpropertiesandantcorrosionperformance,allthebest,theopencircuitpotentialwas-0.435V,thecorrosioncurrentof2.108x10-7A.Corrosionpotentialwas-0.596V,theimpedancevaluewas4.5×105ohm·cm2.Keywords:Poly-o-touifine;Doping;Anticorrosivecoating;Preparation;Property贵州师范学院毕业论文30引言聚苯胺作为一种新型的功能高分子材料，以良好的化学热稳定性、光学性能以及独特的氧化-还原性导致的掺杂与脱掺杂特性，在防腐、电磁屏蔽、电致变色、导电、电池等领域有着广阔的应用前景[1-4]。聚苯胺防腐性能的应用使金属防腐剂具有了替代品，从而成为了有望替代现有红丹、锌络黄、铅络黄等金属防腐剂的新型有机防腐剂，解决重金属防腐剂的污染和毒害问题。1985年，DeBerry发现在酸性介质中用电化学法合成的聚苯胺膜能使不锈钢表面活性钝化而防腐。从此，人们在腐蚀防领域开始了导电高分子膜层的