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- Title
磺酸盐表面活性剂的合成及其对碳钢的缓蚀性能.
- Authors
朱海林; 李晓芬; 陆小猛; 黄浩宇; 王自翔; 胡志勇
- Abstract
A sulfonate surfactant( COMT) was synthesized from cyanuric chloride, n-octylamine, 2-mercaptobenzothiazole( MBT) and aminoethyl sulfonic acid. Its structure was characterized by ESI-MS, 1H NMR and FT-IR. The surface-active properties of COMT in 3.5% NaCl solution were investigated by surface tension method and its corrosion inhibition performance for 45# carbon steel in 3.5% NaCl solution was analyzed by electrochemical test and surface morphology analysis. It was found that, compared with MBT, COMT revealed higher inhibition efficiency in 3.5% NaCl solution. The corrosion inhibition efficiency could achieve 84.65% with 4 mmol/L COMT but merely 40.63% for MBT under the same condition. The results of quantum chemical calculation and molecular dynamics simulation showed that, the incorporation of hydrophobic chain, hydrophilic group and triazine ring in the structure of COMT enhanced its adsorption ability on carbon steel surface, which was in good agreement with the experimental results.
- Subjects
CARBON steel; SURFACE tension; MOLECULAR dynamics; SALT; SURFACE analysis; SULFONATES
- Publication
China Surfactant Detergent & Cosmetics (1001-1803), 2021, Vol 51, Issue 5, p375
- ISSN
1001-1803
- Publication type
Article
- DOI
10.3969/j.issn.1001-1803.2021.05.001