以甲醛、乙二胺、苯乙酮为反应主要原料,利用Mannich反应合成了曼尼希碱缓蚀剂.最佳合成条件:反应温度50℃,反应时间12 h,pH值为4,苯乙酮、甲醛、乙二胺物质的量比为2∶4∶1.用静态失重法对其缓蚀性能进行了综合评价.结果表明,在90℃、15％的盐酸中加入1％的缓蚀剂,N-80钢片的腐蚀速率可以达到2.473 g/(m2·h),具有良好的缓蚀性能.%A new acidizing corrosion inhibitor was synthesized by Mannich reaction with formaldehyde, ethylenediamine and acetophenone as the raw materials. The optimal synthetic conditions were found as follows:reaction temperature 50 *C ,the reaction time 12 h,pH value 4.0,molar ratio of acetophenone, formaldehyde and ethylenediamine 2^4:1. The performance of corrosion inhibitor was evaluated by zero-gravity test. The results indicated that at 90 X. ,20% HC1 with 1.0% corrosion inhibitor, the corrosion rate was 2.473 g/(m2 ? H) ,the inhibition efficiency was the best.
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