葡萄糖酸钠与二甲氨基丙基甲基丙烯酰胺复配对碳钢缓蚀性能的影响  

Corrosion inhibition of carbon steel by the combination of sodium gluconate and dimethyl aminopropyl methacrylamide

作　　者：常佳宇 陆原 赵景茂[1] CHANG JiaYu;LU Yuan;ZHAO JingMao(College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029;Cener Tech Oilfield Chemical Co.,Ltd.,Tianjin 300450,China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]中海油(天津)油田化工有限公司,天津300450

出　　处：《北京化工大学学报（自然科学版）》2021年第4期33-39,共7页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：将葡萄糖酸钠(SG)、二甲氨基丙基甲基丙烯酰胺(DMAPMA)及其复配体系应用于循环冷却水中碳钢的缓蚀。通过失重法、电化学法分别测试了SG、DMAPMA单独使用和复配使用的缓蚀性能。通过光学显微镜、场发射扫描电子显微镜(FESEM)、X射线光电子能谱(XPS)和分子动力学模拟,探讨了缓蚀机理;通过计算协同参数(S)来衡量SG和DMAPMA协同效应的强弱。结果表明,当体系的总质量浓度为100 mg/L时,复配缓蚀剂的缓蚀率可达到95%以上,当复配缓蚀剂含有50 mg/L SG和50 mg/L DMAPMA时缓蚀效果最好。SG和DMAPMA复配使用具有良好的缓蚀协同作用,可以相互促进吸附,使得其在钢片表面形成致密的保护膜。Sodium gluconate(SG),dimethyl aminopropyl methacrylamide(DMAPMA)and their compound systems have been used in the corrosion inhibition of carbon steel in circulating cooling water.The corrosion inhibition performances of single and compound SG and DMAPMA were evaluated by the weight loss method and electrochemical methods.Optical microscopy,field emission scanning electron microscopy(FESEM),X-ray photoelectron spectroscopy(XPS)and molecular dynamics simulations were employed to investigate the corrosion inhibition mechanism.The synergy parameter(S)was calculated in order to measure the strength of the synergy between SG and DMAPMA.The results show that when the total mass concentration of the system was 100 mg/L,the corrosion inhibition rate of the compound corrosion inhibitors exceeded 95%.When the compound corrosion inhibitor contained 50 mg/L SG and 50 mg/L DMAPMA,the corrosion inhibition effect reached a maximum.Combinations of SG and DMAPMA have a good corrosion inhibition synergistic effect and can mutually promote adsorption,resulting in the formation of a dense protective film on the surface of the steel sheet.

关 键 词：碳钢 葡萄糖酸钠 二甲氨基丙基甲基丙烯酰胺 协同效应 缓蚀性能 

分 类 号：TG174.42[金属学及工艺—金属表面处理]