M15甲醇汽油对铜片的腐蚀性研究

Corrosion effects research of M15 methanol-gasoline on copper

关键词:  M15甲醇汽油  腐蚀机理  缓蚀剂 

Key words:  M15 methanol-gasoline  corrosive mechanism  inhibitor

摘要:

以M15甲醇汽油对铜片的静态挂片实验为基础,探讨了甲醇汽油对金属材质的腐蚀机理,考察了温度、水含量、氧含量以及酸值对甲醇汽油中铜片的腐蚀性影响,分析了缓蚀剂的缓蚀机理,优选、复配缓蚀剂,对M15甲醇汽油进行了抗腐蚀实验。结果 表明,苯并三氮唑缓蚀剂的添加量为0.05%(质量分数)时,对铜片具有较好的缓蚀效果,黄铜、紫铜的腐蚀率分别为0.414 g/m²、0.638 g/m²,降低约10%~30%。 

Abstract:

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%.