Corrosion Inhibitor Synthesized from Zanthoxylum Bungeanum Seed Oil and Its Inhibition Performance

Using zanthoxylum bungeanum seed oil,diethylene triamine and benzyl chloride as raw materials,imidazoline quaternary ammonium salt(H) was synthesized through amidation,cyclization and quartemarization reactions.The anti-corrision property of inhibitor H was investigated by weight-loss method.The results indicated that inhibitor H could offer good corrosion inhibition for A20 steel,and its anti-corrosion efficiency could achieve 93.5%~98.5% in 4% HCl solution at 60 ℃.The corrosion rate of A20 steel was reduced to 0.779 g/m2·h with 50 mg/L inhibitor H in 4% HCl solution.