ABSTRACT Herein, diglycidyl bis disulfide carbon ether of bisphenol A sulfur epoxy resin (SER) crosslinked through hexamethylene diamine (HMDA) and methylene diamine (MDA) were investigated as a potential anticorrosive coatings for elevating carbon steel protection in sodium chloride (3.5 % NaCl) solution using electrochemical and theoretical analysis. Potentiodynamic polarization data showed that the epoxy composite coatings investigated in 3.5 % NaCl solution lateness the anticorrosive coatings and present the maximum protective efficiency obtained 97.9 % in the presence of the sulfur epoxy resin crosslinked by MDA (SER/MDA) composite coating. Electrochemical impedance spectroscopy results indicate that the composite coatings employed retard the corrosion inhibition and have a higher protective efficiency compared with controlled (3.5% NaCl). Scanning electron microscope result displayed that the both SER/HMDA and SER/MDA composite polymers could be significantly retard chloride ions attack. Density functional theory calculations, Monte Carlo and molecular dynamics computational approaches support our experimental data.

中文翻译：

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新型环氧复合聚合物作为碳钢在 3.5% NaCl 溶液中的潜在防腐涂层：实验和计算方法

摘要本文研究了通过己二胺 (HMDA) 和亚甲基二胺 (MDA) 交联的双酚 A 硫环氧树脂 (SER) 的二缩水甘油双二硫化碳醚作为一种潜在的防腐涂料，可在氯化钠 (3.5% NaCl) 中提高碳钢的保护水平解决方案使用电化学和理论分析。动电位极化数据表明，在 3.5% NaCl 溶液中研究的环氧复合涂层使防腐涂层延迟，并且在由 MDA（SER/MDA）复合涂层交联的硫环氧树脂存在下获得了 97.9% 的最大保护效率。电化学阻抗谱结果表明，与受控（3.5% NaCl）相比，所采用的复合涂层延缓了腐蚀抑制并具有更高的保护效率。扫描电镜结果显示SER/HMDA和SER/MDA复合聚合物均能显着延缓氯离子的侵袭。密度泛函理论计算、蒙特卡罗和分子动力学计算方法支持我们的实验数据。