以喹啉和氯化苄为原料，在不同温度下合成了喹啉季铵盐，并采用失重法和动电位极化曲线研究了Cu+对合成的喹啉季铵盐在15% HCl溶液中对N80钢的缓蚀效果的影响。结果表明，随着合成反应温度的升高，合成的喹啉季铵盐的缓蚀效率增大; Cu+的加入能大大提高喹啉季铵盐在HCl溶液中对N80钢的缓蚀率，并能有效降低喹啉季铵盐的用量; Cu+和喹啉季铵盐复配后，随着复配缓蚀剂添加量的增大，缓蚀剂的缓蚀率增大; 该复配缓蚀剂为混合抑制型缓蚀剂。

Quinoline quaternary ammonium salts were synthesized at different temperatures using quinoline and benzyl chloride. Effects of Cu+ on the corrosion inhibition of quinoline quaternary ammonium salt for N80 steel in 15% HCl solution were investigated using weight loss method and polarization curves method. The results show that the corrosion inhibition efficiency of synthesized quinoline quaternary ammonium salt increased with the increase of the reaction temperature. Addition of Cu+ can enhance the inhibition efficiency of quinoline quaternary ammonium salt and decrease the addition of quinoline quaternary ammonium salt. When mixed with Cu+, the corrosion efficiency of quinoline quaternary ammonium salt increased with the increase of the addition of the mixed inhibitor. Electrochemical results show that the mixed inhibitor is mainly a mixed corrosion inhibitor.