冷轧钢表面木薯淀粉接枝共聚物自组装膜的缓蚀性能

发布时间：2018-03-23 07:14

本文选题：钢　切入点：木薯淀粉　出处：《表面技术》2017年01期 　论文类型：期刊论文

【摘要】：目的合成出木薯淀粉-苯乙烯-甲基丙烯酸甲酯接枝共聚物(CS-PE-MMA)及运用自组装技术形成在柠檬酸中对钢具有良好缓蚀性能的CS-PE-MMA分子膜。方法用扫描电子显微镜(SEM)、红外光谱(IR)表征了自组装分子膜的形貌和组成;采用动电位极化曲线、电化学阻抗谱(EIS)研究缓蚀性能。结果CS-PE-MMA在冷轧钢表面形成球斑状稳定有序而致密的分子膜。动电位极化曲线表明工作电极阴阳极反应同时被抑制,EIS谱主要呈半圆容抗弧,电荷转移电阻随CS-PE-MMA自组装温度升高,时间增大而增大,缓蚀率最高达73.04%。结论 CS-PE-MMA属于混合抑制型缓蚀剂,自组装分子膜在H3C6H5O7溶液中对冷轧钢有良好的缓蚀作用。
[Abstract]:Objective to synthesize cassava starch-styrene-methyl methacrylate graft copolymer (CS-PE-MMA) and to form CS-PE-MMA molecular film with good corrosion inhibition property in citric acid by using self-assembly technique. The morphology and composition of self-assembled molecular films were characterized by IR. Using potentiodynamic polarization curve, Electrochemical impedance spectroscopy (EIS) was used to study the corrosion inhibition properties. Results the CS-PE-MMA formed a spherical, stable, ordered and compact molecular film on the surface of cold rolled steel. The potentiodynamic polarization curve indicated that the cathode and anode reaction of the working electrode was inhibited simultaneously, and the EIS spectrum was mainly semi-circular capacitive anti-arc. The charge transfer resistance increases with the increase of CS-PE-MMA self-assembly temperature and time, and the corrosion inhibition rate is up to 73.040.Conclusion CS-PE-MMA is a mixed inhibitor and self-assembled molecular film has good corrosion inhibition effect on cold-rolled steel in H3C6H5O7 solution.
【作者单位】：云南大学化学科学与工程学院;西南林业大学理学院;
【基金】：国家自然科学基金项目(51561027) 云南省中青年学术和技术带头人培养项目(2015HB049) 云南省教育厅科学研究基金重点项目(2013Z080)~~
【分类号】：TG174.42

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