Fan Lin,Wang Pengjie*,Song Yuhao,et al.Corrosion inhibition of N N’-methylene bisacrylamide and OP-10 on Q235 steel in 1 mol/L HCl[J].Plating & Finishing,2024,(7):49-57.[doi:10.3969/j.issn.1001-3849.2024.07.008]
N，N’-亚甲基双丙烯酰胺与OP-10对Q235钢在1 mol/L HCl中的缓蚀作用
- Title:
- Corrosion inhibition of N N’-methylene bisacrylamide and OP-10 on Q235 steel in 1 mol/L HCl
- Keywords:
- N ; N’-methylene bisacrylamide ; OP-10 ; electrochemistry ; weight loss experiment ; corrosion inhibition performance ; quantum chemistry
- 摘要:
- 针对在酸洗工况下金属的腐蚀问题，为解决单一缓蚀剂的成本高、效率低的问题，在 N ， N’ - 亚甲基双丙烯酰胺（ NN ）的最佳缓蚀浓度基础上将其与 OP-10 复配（ N&P ），采取失重实验、电化学实验、表面分析和理论模拟的方法，研究了 NN 和 N&P 缓蚀剂对 Q235 钢在 1.0 mol/L HCl 溶液中的缓蚀性能。结果表明：在 30 ℃ 条件下， NN 的交流阻抗谱、动电位极化曲线和失重实验所得的最佳缓蚀率分别为 73.32% 、 85.57% 、 77.46% ，而将 NN 与 OP-10 复配后的缓蚀效率分别提升至 92.34% 、 96.26% 、 90.14% 。量子化学表明： N&P 吸附位点主要为 OP-10 分子中的大 Π 键和 C - O 键以及 NN 分子中的 C=O 键、 C=C 键、 C - N 键，具有较好的协同效应。
- Abstract:
- ： In order to solve the problem of high cost and low efficiency of a single corrosion inhibitor ， N ， N’-methylene diacrylamide （ NN ） was combined with OP-10 （ N&P ） on the basis of the optimal corrosion inhibition concentration ， weight loss experiment ， electrochemical experiment ， surface analysis and theoretical simulation were adopted. The corrosion inhibition properties of NN and N&P on Q235 steel in 1.0 mol/L HCl solution were studied. The results show that at 30 ℃ ， the optimal corrosion inhibition rates obtained by AC impedance spectrum ， potentiodynamic polarization curve and weight loss experiment are 73.32% ， 85.57% and 77.46% ， respectively ， while the corrosion inhibition efficiency of NN combined with OP-10 is increased to 92.34% ， 96.26% and 90.14% ， respectively. Quantum chemistry shows that the adsorption sites of N&P are mainly the big π bond and C - O bond in OP-10 molecule and the C=O bond ， C=C bond and C - N bond in NN molecule ， and N&P has a good synergis tic effect.
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备注/Memo
收稿日期： 2023-11-21 修回日期： 2023-12-03 作者简介： 樊林（ 1999 —），男，硕士生，从事缓蚀剂的合成与评价， email ： 2873274096@qq.com * 通信作者： 林元华， email ： yhlin28@163.com ； 王鹏杰， e-mail ： pjwang15@163.com 基金项目： 国家自然科学基金（ 52074232 ）；四川省自然科学基金（ 2022NSFSC0028 ）?/html>