油酸酰胺作为防锈添加剂的防锈性能研究

Rust Resistance of Oleamide Used as Antirust Additive

目的以油酸酰胺作为防锈添加剂自制防锈剂,优选配方,考察防锈性能。方法以环保型缓蚀剂水溶性硅酸盐为主要原料,以酰胺型表面活性剂为添加剂制备工序间水基防锈剂,通过电化学测试、耐候试验和扫描电镜等评价其性能。结果电化学测试结果表明,涂抹自制防锈剂后,腐蚀电流密度降低到9.12×10-7A/cm2,腐蚀电位提高到-0.4206 V。结论与市售防锈剂对比,以油酸酰胺为添加剂制备的水基防锈剂可以明显提高碳钢的耐腐蚀性能。

Objective To explore the antirust performance and optimize formulation of homemade rust inhibitor prepared using oleamide as an antirust additive. Methods Environment friendly corrosion inhibitor water-soluble silicate was used as the main raw material and surfactant of amide type as the additive to prepare inter-process water-based rust inhibitor. The performance was evaluated by electrochemical test,weathering test,and scanning electron microscopy,etc. Results Electrochemical test results showed that the corrosion current density of the steel coated with the homemade rust inhibitor decreased to 9. 12 × 10- 7A / cm2,while the corrosion potential increased to- 0. 4206 V. Conclusion Compared with commercial rust inhibitor,the water-based rust inhibitor prepared with oleamide as additive could significantly improve the corrosion resistance of carbon steel.