摘要
以聚天冬氨酸(PASP)、多氨基多醚基甲叉膦酸(PAPEMP)、N-(3-氨丙基)咪唑(N-API)和硫酸锌(ZnSO 4)为主要原料,制备了绿色复合型缓蚀剂,研究了其在0.5 mol/L H 2SO_(4)溶液中对抑制20#碳钢腐蚀的协同作用.实验结果表明,当复合缓蚀剂中PASP,PAPEMP,N-API,ZnSO 4的质量浓度分别为30,20,40和4 mg/L时,其缓蚀率可达97.6%.电化学测试表明该缓蚀剂表现为阳极型缓蚀剂,抑制了金属的溶解和阴极过程,表现出明显的协同作用.通过SEM表面分析表明复合缓蚀剂具有显著的缓蚀性能.
A green composite corrosion inhibitor was prepared from polyaspartic acid(PASP),polyamino polyether methylidene phosphonic acid(PAPEMP),N-(3-aminopropyl)imidazole(N-API)and zinc sulfate(ZnSO_(4)).Its synergistic effect on inhibiting 20#carbon steel corrosion in 0.5 mol/L H 2SO 4 solution was studied.The experimental results show that when the mass concentrations of PASP,PAPEMP,N-API and ZnSO 4 in the composite inhibitor is 30,20,40 and 4 mg/L respectively,the inhibition rate can reach 97.6%.The electrochemical tests show that the inhibitor is an anodic inhibitor,which inhibits the dissolution of metal and cathodic process,showing obvious synergistic effect.SEM surface analysis shows that the composite corrosion inhibitor has significant corrosion inhibition performance.
作者
王晓慧
黎振华
王宏正
刘瑞雪
李向辉
邓刚
Wang Xiaohui;Li Zhenhua;Wang Hongzheng;Liu Ruixue;Li Xianghui;Deng Gang(Isotope Institute Co.,Ltd.,Henan Academy of Sciences,Zhengzhou 450015,China;College of Material and Chemical Engineering,Zheng Zhou University of Light Industry,Zhengzhou 450002,China)
出处
《河南师范大学学报(自然科学版)》
CAS
北大核心
2021年第6期106-112,共7页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金(21474092)
河南省科学院基本科研业务费(190604018,200604025)
中央引导地方科技发展项目(211204001).
关键词
复合缓蚀剂
碳钢
失重法
电化学
composite corrosion inhibitor
carbon steel
weight loss method
electrochemical