车用乙醇汽油金属腐蚀抑制剂的研究

Study on the Corrosion Inhibitors for Vehicle-Used Alcohol-Based Gasoline

针对乙醇汽油对金属腐蚀性加剧的问题,研究了新的金属腐蚀抑制剂,其作用机理是各种成分协同作用,在金属的表面形成有效的保护膜,抑制由于水的存在导致的酸腐蚀和电化学腐蚀。在金属腐蚀抑制剂加量200 m g/L时,对黄铜缓蚀率为93.7%;对紫铜缓蚀率为91.9%;对铝缓蚀率为90.0%;对20钢缓蚀率为78.5%;且性能优于美国专利配方。

Aiming at the problem of metal corrosion by alcohol-based gasoline,a novel corrosion inhibitor was developed.The mechanism of action is that the interaction of different components can form a protective film on metal surface to effectively prevent the corrosion of acid and electron chemistry owing to the existence of water. When the concentration of inhibitor is 200 mg/L in alcohol-based gasoline,the corrosion inhibiting rate is 93.7% for brass,91.9% for copper,90,0% for aluminium,78.5% for 20 carbon steel,where the efficiency is superior to that of corrosion inhibitor reported in U.S.patent formula.