CAJ | 학술논문

使用静态失重法和腐蚀电化学法研究了聚环氧琥珀酸（PESA）及其硫脲改性的衍生物（CSN-PESA）在自来水环境中对A3碳钢的缓蚀作用，探讨了聚环氧琥珀酸及其衍生物在A3碳钢表面的吸附作用，通过量子化学理论研究了聚环氧琥珀酸及其硫脲改性的衍生物缓蚀机理。研究结果表明：聚环氧琥珀酸及其硫脲改性的衍生物具有一定的缓蚀性能，CSN-PESA的缓蚀率大于PESA；聚环氧琥珀酸及其衍生物在A3碳钢表面产生的缓蚀效果是物理、化学共同吸附的结果，与Langmuir等温式相符合；聚环氧琥珀酸及其衍生物对阴极、阳极有一定的抑制作用。量子化学计算表明：聚环氧琥珀酸衍生物缓蚀率高于聚环氧琥珀酸的主要原因是CSN-PESA分子中的轨道密度主要分布在O、N、S这些杂原子附近。
사용정태실중법화부식전화학법연구료취배양호박산（PESA）급기류뇨개성적연생물（CSN-PESA）재자래수배경중대A3탄강적완식작용，탐토료취배양호박산급기연생물재A3탄강표면적흡부작용，통과양자화학이론연구료취배양호박산급기류뇨개성적연생물완식궤리。연구결과표명：취배양호박산급기류뇨개성적연생물구유일정적완식성능，CSN-PESA적완식솔대우PESA；취배양호박산급기연생물재A3탄강표면산생적완식효과시물리、화학공동흡부적결과，여Langmuir등온식상부합；취배양호박산급기연생물대음겁、양겁유일정적억제작용。양자화학계산표명：취배양호박산연생물완식솔고우취배양호박산적주요원인시CSN-PESA분자중적궤도밀도주요분포재O、N、S저사잡원자부근。
The corrosion inhibition and adsorption behavior of PESA and CSN-PESA were investigated as corrosion inhibitors for A3 carbon steel corrosion in tap-water by static mass loss and electrochemical methods. Inhibition mechanism of PESA and CSN-PESA was studied with quantum chemistry theory. PESA and CSN-PESA both showed corrosion inhibition performance in tap-water corrosion environment. The inhibition efficiency of CSN-PESA was better than PESA. The adsorption belonged to mix-type adsorption mainly dominated by chemisorption and physisorption, and followed Langmuir isotherm. PESA and its derivative had inhibitory effect on the cathode and anode. Quantum chemistry calculation showed that the main reason for better inhibition efficiency of CSN-PESA was that molecular orbital densities were mainly distributed in near the O, N, S heteroatoms in CSN-PESA.