采用化学氧化法合成了聚苯胺(PANI)及聚苯胺–TiO2复合材料，通过傅里叶变换红外光谱(FT-IR)、能谱(EDS)、扫描电镜(SEM)等方法对其结构、元素组成和形貌进行了表征。以氮甲基吡咯烷酮(NMP)为溶剂，通过溶液浇注法在304不锈钢表面制备了聚苯胺和聚苯胺–TiO2薄膜，用动电位极化曲线和电化学交流阻抗谱研究了不同涂层在3.5%NaCl溶液中的耐腐蚀性能。结果表明，相比于聚苯胺涂层，聚苯胺–TiO2复合涂层对304不锈钢具有更好的保护性能。当TiO2含量为5%时，复合涂层的耐蚀性能最好，腐蚀电位比裸不锈钢正移了381 mV，保护效率达到95.44%。
The polyaniline (PANI) and PANI–TiO2 composite were prepared by chemical oxidation and their structure, elemental composition, and morphology were characterized by Fourier-transform infrared spectroscopy (FT-IR), energy-dispersive spectroscopy (EDS), and scanning electron microscopy (SEM). The polyaniline and PANI–TiO2 coatings were prepared on the surface of 304 stainless steel with N-methyl pyrrolidone (NMP) as solvent by solution casting method. The corrosion resistance of different coatings in 3.5% NaCl solution was studied by potentiodynamic polarization curve measurement and electrochemical impedance spectroscopy (EIS). The results indicated that the PANI–TiO2 composite coating has a better protective property for 304 stainless steel than the polyaniline coating. The composite coating containing 5%TiO2 has a positive shift of corrosion potential by 381 mV against that of the bare stainless steel and a protection efficiency up to 95.44%, showing the best corrosion resistance.
参考文献
| [1] | 宁晓辉,欧阳春林,周海晖,旷亚非.新型聚苯胺系防腐蚀导电涂料的制备与研究[J].电镀与涂饰,2005(02):32-35. |
| [2] | 牛林清,郭瑞光,唐长斌,张建锋,马建青,蔡丽丽,郭洪涛.钢铁表面导电聚苯胺膜的制备[J].电镀与涂饰,2011(07):72-75. |
| [3] | 谭焰,谢乃贤.聚邻甲苯胺防腐涂层对碳钢的腐蚀保护作用[J].电镀与涂饰,2000(05):12-14,17. |
| [4] | R. Holze;Y. P. Wu.Intrinsically conducting polymers in electrochemical energy technology: Trends and progress[J].Electrochimica Acta,2014:93-107. |
| [5] | Montree Sawangphruk;Tanon Kaewsongpol.Direct electrodeposition and superior pseudocapacitive property of ultrahigh porous silver-incorporated polyaniline films[J].Materials Letters,2012:142-145. |
| [6] | Gangopadhyay, R.;Chowdhury, A.D.;De, A. .Functionalized polyaniline nanowires for biosensing[J].Sensors and Actuators, B. Chemical,2012(0):777-785. |
| [7] | Chi-Hao Chang;Tsao-Cheng Huang;Chih-Wei Peng .Novel anticorrosion coatings prepared from polyaniline/ graphene composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2012(14):5044-5051. |
| [8] | DEBERRY D W .Modification of the electrochemical and corrosion behavior of stainless steels with an electroactive coating[J].Journal of the Electrochemical Society,1985,132(05):1022-1026. |
| [9] | Mouna Mrad;Leila Dhouibi;Ezzedine Triki .Dependence of the corrosion performance of polyaniline films applied on stainless steel on the nature of electropolymerisation solution[J].Synthetic Metals,2009(17/18):1903-1909. |
| [10] | Bernhard Wessling;Joerg Posdorfer .Corrosion prevention with an organic metal (polyaniline): corrosion test results[J].Electrochimica Acta,1999(12):2139-2147. |
| [11] | Michael Rohwerder;Adam Michalik .Conducting polymers for corrosion protection: What makes the difference between failure and success?[J].Electrochimica Acta,2007(3):1300-1313. |
| [12] | MOSTAFAEI A;ZOLRIASATEIN A .Synthesis and characterization of conducting polyaniline nanocomposites containing ZnO nanorods[J].Progress in Natural Science:Materials International,2012,22(04):273-280. |
| [13] | Cristina Delia Pina;Michele Rossi;Anna Maria Ferretti .One-pot synthesis of polyaniline/Fe_3O_4 nanocomposites with magnetic and conductive behaviour. Catalytic effect of Fe_3O_4 nanoparticles[J].Synthetic Metals,2012(24):2250-2258. |
| [14] | S. Sathiyanarayanan;S. Syed Azim;G. Venkatachari .Preparation of polyaniline-TiO_2 composite and its comparative corrosion protection performance with polyaniline[J].Synthetic Metals,2007(4/5):205-213. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%