新型咪唑啉缓蚀剂的合成与应用

Synthesis and Application of a Novel Imidaoline Inhibition

采用苯甲酸、月桂酸、二乙烯三胺和三乙烯四胺为原料,合成了4种咪唑啉季铵盐缓蚀剂,研究了在50℃、体积分数为5%的HC l介质中,咪唑啉季铵盐与阴离子表面活性剂和无机阴离子的协同作用。结果表明,以月桂酸和三乙烯四胺为原料合成的咪唑啉季铵盐与I-质量比为1∶1时,缓蚀效果最佳。在不同时间和不同温度下对复合型缓蚀剂的缓蚀率的研究结果表明,缓蚀剂在静态条件下对A3钢的缓蚀率可达99.4%,较之单独使用咪唑啉季铵盐提高了1.1%左右。

Four novel imidazolinyl-quaternary ammonium salts were synthesized from benzoic acid, lauric acid, diethylene triamine and triethylenetetramine. The best formulation was developed by the research on the product, surfactant and inorganic anion in 5% hydrochloric acid at 50 ℃ with mass loss method. The inhibition effect of imidazolinyl-ammonium-sah synthesized from lauric acid and triethylenetetramine is the best when the concentration ratio of the imidazolinyl-ammonium-sah and I^- is 1：1 （mass ratio）. Under the different time and different temperature conditions, the inhibition rate of the composite inhibitor was studied. The result shows that the inhibitive efficiency of the composite inhibitor can be increased by 1.1% compared with that of imidazoline inhibitor and the inhibitive efficiency for A3 steel can reach 99.4%.