新型硬质合金苯并咪唑类缓蚀剂的合成研究  

Synthesis of New Benzimidazole Corrosion Inhibitor Applied in Cemented Carbide

作　　者：唐楷[1] 颜杰[1] 孙亚丽[1] 李莉[1] 

机构地区：[1]四川理工学院材料与化学工程学院,四川自贡643000

出　　处：《稀有金属与硬质合金》2010年第3期16-18,共3页Rare Metals and Cemented Carbides

摘　　要：以邻苯二胺和硝基苯甲醛为原料一步合成2-(邻位/间位/对位)硝基苯并咪唑等三种苯并咪唑衍生物,并将其应用于硬质合金防腐领域。实验研究表明,缓蚀剂最优合成工艺条件为:n(邻苯二胺)∶n(硝基苯甲醛)为1.2∶1,反应温度为60℃,加热时间为30 min。经熔点分析可知所合成产物为目标产物,新型缓蚀剂的缓蚀率为95.6%,超过国内同类产品水平。Three kinds of benzimidazole ramification including 2-（o/i/p）-nitrobenzimidazole were synthesized by one step with o-phenylenediamine and nitrobenzaldehyde as the materials.And they were applied in cemented carbide anticorrosion.The results show that the optimal synthesis technical parameters are as follows：the ratio of o-phenylenediamine to nitrobenzaldehyde is 1.2,reaction temperature 60 ℃,heating duration 20 min.The melting point analysis results show that the synthetic product is the target product.The corrosion inhibition rate of the new corrosion inhibitor is up to 95.6%,better than that of the similar domestic products.

关 键 词：苯并咪唑 硬质合金防腐 缓蚀剂 缓蚀率 

分 类 号：TG174.42[金属学及工艺—金属表面处理]