ESA-AA共聚物的合成、阻垢缓蚀性能及缓蚀机理研究  

Synthesis,Scale and Corrosion Inhibition Performance and Corrosion Inhibition Mechanism of ESA-AA Copolymer

作　　者：甄换成 张亚新[1] 甄卫军[1] ZHEN Huancheng;ZHANG Yaxin;ZHEN Weijun(School of Chemistry and Chemical Engineering,Xinjiang University,Urumqi Xinjiang 830046,China)

机构地区：[1]新疆大学化学化工学院,新疆乌鲁木齐830046

出　　处：《新疆大学学报（自然科学版）》2020年第4期471-482,共12页Journal of Xinjiang University(Natural Science Edition)

基　　金：国家自然科学基金(21766034).

摘　　要：本文用自由基聚合法合成了ESA-AA共聚物,采用碳酸钙沉积法和旋转挂片法分别测试了其阻垢和缓蚀性能,结果表明:当ESA-AA共聚物浓度为20 mg/L,阻垢率达到了97.8%;当ESA-AA共聚物浓度为100 mg/L时,对Q235碳钢在自来水中的缓蚀率达到了98.1%.ESA-AA共聚物分散Fe2O3性能结果显示,在ESA的分子结构中引入羧基可以改善其对Fe2O3的分散性能,从而提高其缓蚀性能.SEM/EDS、电化学、腐蚀动力学和热力学研究表明,共聚物通过吸附作用在金属表面成膜,抑制Q235碳钢表面阴极和阳极反应,增大了电化学腐蚀过程的电荷转移电阻,提高了腐蚀反应的活化能,从而延缓了金属腐蚀.研究表明ESA-AA共聚物具有优异的阻垢和缓蚀性能,为环保型水处理剂的实际应用研究奠定了一定的基础.In this paper,the ESA-AA copolymer was synthesized by free radical polymerization.The scale inhibition and corrosion inhibition performances were tested by calcium carbonate deposition method and rotating hanging plate method.Scale and corrosion inhibition performance studies show that when the ESA-AA copolymer concentration is 20 mg/L,the scale inhibition rate reaches 97.8%,and the copolymer concentration is 100 mg/L,the corrosion inhibition rate of Q235 carbon steel in tap water 98.1%.ESA-AA copolymer dispersion Fe2O3 performance results show that the introduction of carboxyl groups in the molecular structure of ESA can improve its dispersion of Fe2O3,thus improving its corrosion inhibition performance.SEM/EDS,electrochemistry,corrosion kinetics and thermodynamics studies show that the copolymer forms a film on the metal surface by adsorption,inhibits the cathode and anode reaction on the surface of Q235 carbon steel,increases the charge transfer resistance of the electrochemical corrosion process,and improves the corrosion.The activation energy of the reaction delays metal corrosion.It was shown that the ESA-AA copolymer had strong scale and corrosion inhibition properties,and this research laid a certain foundation for the practical application of environmentally friendly water treatment agents.

关 键 词：丙烯酸-环氧琥珀酸共聚物 阻垢 缓蚀 缓蚀机理 

分 类 号：TQ15[化学工程—电化学工业]