合成并用元素分析和核磁共振(1H-NMR)表征了阳离子Gemini表面活性剂1,2-双亚甲基-双(十烷基二甲基溴化铵)和1,2-双亚甲基-双(十二烷基二甲基溴化铵)(分别简写为10-2-10和12-2-12),并用失重法研究了1M盐酸溶液中该类表面活性剂在碳钢表面的吸附行为及其缓蚀性能.实验结果表明,其缓蚀机理为表面活性剂在钢铁表面的吸附形成单分子膜,从而阻碍了盐酸对钢铁的侵蚀,其缓蚀效率随着表面活性剂浓度的增加而增加,当表面活性剂浓度接近其临界胶束浓度时达到最大,理论计算表明,在研究的浓度范围内,盐酸溶液中该类Gemini表面活性剂在碳钢表面的吸附行为符合Langmuir吸附等温式.
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