目前,国内对曼尼希碱类缓蚀剂的研究主要侧重于应用,而对理论方面的报道较少.以苯乙酮、吗啉和甲醛为原料,在pH =2 ～3条件下合成了曼尼希碱类酸化缓蚀剂1-苯基-3-吗啉基-1-丙酮(MOPP),采用元素分析仪,红外光谱仪分析MOPP的元素组成及结构;采用静态腐蚀失重法和电化学极化曲线法研究了MOPP在15％盐酸中对N80钢片的缓蚀性能,探讨了MOPP对N80钢片的吸附行为,并对吸附热力学和动力学参数进行了计算.结果表明:MOPP具有较高的缓蚀性能,能同时抑制N80钢的阴、阳极腐蚀反应过程,缓蚀效率随着浓度的增加而增加,随着温度的增加而降低;MOPP在N80钢片表面上主要发生化学吸附,且吸附过程是一个自发、放热、混乱程度减小的过程,吸附规律服从Langmuir吸附等温式.
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