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以苯并三氮唑(BTA)和溴代正丁烷为原料,采用一步法合成了N-丁基苯并三氮唑(N-BBTA),研究了BTA、N-BBTA以及N-BBTA与BTA的复配体系对铜在3%(质量分数)NaCl溶液中的缓蚀行为。结果表明,单一N-BBTA和BTA对铜均具有一定的缓蚀能力。当N-BBTA、BTA浓度为10mmol/L时,缓蚀率分别为60.61%和72.05%。当BTA和N-BBTA分别以浓度8mmol/L和2mmol/L进行复配时,缓蚀率达到93.46%,表明两物质具有良好的协同缓蚀能力。大气加速腐蚀试验表明,铜片在上述复配体系中的抗大气腐蚀能力明显提高。
N-butylbenzotriazole (N-BBTA) was synthesized by one-step using benzotriazole (BTA) and n-butyl bromide as raw materials. The effects of BTA, N-BBTA and N-BBTA BTA complex system of copper in 3% (mass fraction) NaCl solution corrosion inhibition. The results show that single N-BBTA and BTA have some corrosion inhibition ability to copper. When N-BBTA and BTA were 10 mmol / L, the corrosion inhibition rates were 60.61% and 72.05% respectively. When BTA and N-BBTA were respectively mixed at concentrations of 8 mmol / L and 2 mmol / L, the inhibition rate reached 93.46%, indicating that the two substances had good synergistic corrosion inhibition ability. Atmospheric accelerated corrosion tests show that copper in the above compound system significantly increased the anti-atmospheric corrosion.