Corrosion effects research of M15 methanol-gasoline on copper

Based on the experiment of hanging out the test block by static state, the corrosive mechanism for metal material of methanol gasoline was discussed. The corrosion effects of temperature, water, content, oxygen content, and acid number on copper in M15 methanol-gasoline were investigated, and the corrosion mechanism of the inhibitor was analyzed. Through optimizing and formulating the inhibitor, the anti-corrosive experiment of M15 methanol-gasoline was conducted. The results showed that when the addition of benzotriazo was 0.05%(wt), the copper had a better anti-corrosive performance that the corrosion rate of brass and red cupper were 0.414 g/m² and 0.638 g/m² respectively, which reduced about 10%~30%.