采用静态失重法和电化学方法研究歧化松香胺还原席夫碱N，N-二甲基-（4-歧化松香胺甲基）苯胺（DD—RAP）在盐酸溶液中对A3钢的缓蚀性能。静态失重法试验表明，DDRAP能有效抑制盐酸溶液中A3钢的腐蚀；在60℃的6．O％的盐酸溶液中，DDRAP加量为100mg·L-1时，A3钢的腐蚀速度为0．2806mg·cm-2·h-1，缓蚀率达到97．74％。吸附规律研究结果表明，DDRAP在A3钢表面的吸附符合Langmuir吸附等温式，其吸附自由能为-29．94kJ·mol-1，吸附为自发进行的物理和化学吸附。电化学试验表明DDRAP属阴极型缓蚀剂。
A reduced Schiff base corrosion inhibitor of N, N-dimethyl-(4-disproportionated rosin aminomethyl)- phenylamine (DDRAP) was synthesized from disproportionated rosin amine, and its inhibition efficiency for the corrosion of A3 steel in HC1 solution was investigated by weight-loss measurement and polarization curves. The results of weight loss showed that the corrosion rate and inhibition efficiency for carbon steel were 0. 2806 mg·cm-2·h-1 and 97. 74 % respectively when the DDRAP concentration was 100 mg·L-1 in HC1 solution at 60 ~C. The adsorption of DDRAP on A3 steel in HC1 solution obeyed Langmuir isotherm and the obtained standard free energy depended on both physicosorption and chemisorption The influences of temperature and HC1 concentration were also studied. Polarization curves reveal that DDRAP is a cathodic corrosion inhibitor.
参考文献
| [1] | Pandian Bothi Raja;Mathur Gopalakrishnan Sethuraman .Natural products as corrosion inhibitor for metals in corrosive media - A review[J].Materials Letters,2008(1):113-116. |
| [2] | F.S. de Souza;A. Spinelli .Caffeic Acid As A Green Corrosion Inhibitor For Mild Steel[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2009(3):642-649. |
| [3] | 李国敏,李爱魁,郭兴蓬,郑家燊.松香胺类RA缓蚀剂对碳钢在高压CO2体系中缓蚀机理研究[J].腐蚀科学与防护技术,2004(03):125-128. |
| [4] | 赵时仁.松香胺聚氧乙烯醚对A3钢在盐酸介质中缓蚀性能的研究[J].材料保护,1994(08):1. |
| [5] | 关鲁雄,占晶晶,区叶秀.席夫碱缓蚀剂对碳钢材料的缓蚀性能[J].应用化学,2010(06):716-720. |
| [6] | 陈玉红,唐致远,童汝亭,王庆飞.席夫碱结构对Cu缓蚀作用的影响[J].中国腐蚀与防护学报,2007(03):156-161. |
| [7] | 姚绪杰,饶小平,王宗德,宋湛谦.脱氢枞胺水杨醛类Schiff碱对铜的缓蚀性能研究[J].生物质化学工程,2006(03):21-24. |
| [8] | 朱延松,许兵,邵会波.席夫碱自组装单分子膜在不同pH的缓冲溶液中的电化学行为[J].化学通报（印刷版）,2005(10):799-800. |
| [9] | Carbon steel corrosion inhibition in hydrochloric acid solution using a reduced Schiff base of ethylenediamine[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2010(3):788. |
| [10] | 邹立科,赖川,谢斌,向珍,黄春,姜春梅,曾倪.O,O ′-二（苯基）二硫代磷酸-N,N-二乙铵对Q235钢硫酸溶液中的缓蚀性能研究[J].化学研究与应用,2011(09):1174-1178. |
| [11] | Mounim Lebrini;Michel Traisnel;Michel Lagrenee;Bouchaib Mernari~c;Fouad Bentiss .Inhibitive properties, adsorption and a theoretical study of 3,5-bis(n-pyridyl)-4-amino-l,2,4-triazoles as corrosion inhibitors for mild steel in perchloric acid[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2008(2):473-479. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%