几种炔醇化合物与曼尼希碱的协同缓蚀作用研究

Study on the synergistic corrosion inhibition performance of several alkynol compounds with Mannich base

利用量子化学方法计算了丙炔醇乙氧基化合物(PME)、3-甲基-1-戊炔-3-醇(MPA)、1,1,3-三苯基-2-丙炔醇(TPP)、羟丙基炔丙基醚(PAP)、3-甲基丁炔醇(MBA)等5种炔醇化合物的分子轨道参数,从理论上探讨了炔醇结构与缓蚀作用之间的关系;将5种炔醇化合物与曼尼希碱配制成复合缓蚀剂,通过静态失重法测试了该复合缓蚀剂的缓蚀性能。结果表明,5种炔醇与曼尼希碱之间具有良好的协同缓蚀作用,在复合缓蚀剂中的缓蚀作用排列顺序为:TPP>PAP>PME>MPA>MBA,可以用炔醇化合物的最高占有轨道能量E_(HOMO)预测5种炔醇化合物的缓蚀性能。

The quantum chemistry method was used to calculate the molecular orbital parameters of five acetylenic alcohols,such as propynol ethoxylate(PME),1,1,3-triphenyl propargyl alcohol(TPP),3-methyl-1-pentyn-3-ol(MPA),propargyl alcohol propoxylate(PAP),2-methyl-3-butyn-2-ol(MBA)and the relationship between the structure of acetylenic alcohols and corrosion inhibition was discussed theoretically.The corrosion inhibition performance of compound corrosion inhibitions,which were prepared from five acetylenic alcohol compounds and Manichine,were tested by static weight loss method.The results show that:these acetylenic alcohol compounds and Mannich bases have a good synergistic corrosion inhibition effect.The order of the corrosion inhibition effects of acetylenic alcohols in compound corrosion inhibitions is:TPP>PAP>PME>MPA>MBA,the corrosion inhibition performance of alkynol compounds can be predicted by the highest occuped molecular orbital energy E_(HOMO).