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中国腐蚀与防护学报  2011, Vol. 31 Issue (4): 265-269    
  研究报告 本期目录 | 过刊浏览 |
木薯淀粉接枝共聚物在盐酸介质中对冷轧钢的缓蚀作用
付惠,李向红,李云仙,刘建祥
西南林业大学理学院 昆明 650224
CORROSION INHIBITION OF CASSAVA STARCH GRAFT ACRYL AMIDE COPOLYMER FOR COLD ROLLED STEEL IN HYDROCHLORIC ACID
FU Hui, LI Xianghong, LI Yunxian, LIU Jianxiang
Faculty of Science, Southwest Forestry University, Kunming 650224
全文: PDF(861 KB)  
摘要: 采用氧化还原引发体系引发木薯淀粉与丙烯酰胺接枝共聚反应制备的天然木薯淀粉接枝共聚物(SGA),可以作为一种环境友好型“绿色”缓蚀剂。本文用失重法、动电位极化曲线、电化学阻抗(EIS)和扫描电子显微镜(SEM)首次研究了SGA在 1.0 mol/L HCl溶液中对冷轧钢的缓蚀作用。结果表明,SGA对冷轧钢具有良好的缓蚀作用,在钢表面的吸附符合Langmuir吸附等温式,为混合抑制型缓蚀剂;EIS谱呈半圆容抗弧,电荷转移电阻随缓蚀剂浓度的增加而增大。SEM表明SGA在钢表面吸附形成了致密的缓蚀剂膜层。
关键词 盐酸木薯淀粉接枝共聚物缓蚀剂    
Abstract:Cassava starch graft acryl amide copolymer (SGA) was prepared by grafting acryl amide onto starch with oxidization reduction reaction, which can be used as a good environmentally-friendly “green” inhibitor. The inhibition effect of SGA on the corrosion of cold rolled steel (CRS) in 1.0 mol/L HCl has been studied by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and scanning electron microscope (SEM) methods. The results show that SGA is a good inhibitor in 1.0 mol/L HCl for CRS, and the adsorption of SGA on the CRS surface obeys Langmuir adsorption isotherm. Polarization curves show that SGA is a mixed-type inhibitor in hydrochloric acid. All EIS spectra exhibit one capacitive loop, and the charge transfer resistance increases with the inhibitor concentration. SEM results show that the introduction of SGA into HCl solution results in the formation of a compact and dense inhibitive film on the CRS surface.
Key wordssteel    hydrochloric acid    cassava starch, graft copolymer    inhibitor
收稿日期: 2010-05-13     
ZTFLH: 

TG174.42

 
基金资助:

西南林业大学重点科研基金项目(200605Z)和西南林业大学林产化学加工工程校级重点学科建设项目(XKX200907)资助

通讯作者: 付惠     E-mail: fuh1021@126.com
Corresponding author: FU Hui     E-mail: fuh1021@126.com
作者简介: 付惠,女,1959年生,教授,研究方向为缓蚀剂

引用本文:

付惠,李向红,李云仙,刘建祥. 木薯淀粉接枝共聚物在盐酸介质中对冷轧钢的缓蚀作用[J]. 中国腐蚀与防护学报, 2011, 31(4): 265-269.
FU Hui, LI Xiang-Hong, LI Yun-Xian, LIU Jian-Xiang. CORROSION INHIBITION OF CASSAVA STARCH GRAFT ACRYL AMIDE COPOLYMER FOR COLD ROLLED STEEL IN HYDROCHLORIC ACID. J Chin Soc Corr Pro, 2011, 31(4): 265-269.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2011/V31/I4/265

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