SYNERGISTIC INHIBITION OF Tw-20 AND POLYACRYLIC  ACID ON IRON CORROSION IN HYDROCHLORIC ACID

郭英; 宋诗哲

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SYNERGISTIC INHIBITION OF Tw-20 AND POLYACRYLIC ACID ON IRON CORROSION IN HYDROCHLORIC ACID

更新时间：2025-12-10

- SYNERGISTIC INHIBITION OF Tw-20 AND POLYACRYLIC ACID ON IRON CORROSION IN HYDROCHLORIC ACID
- CIESC Journal Issue 3, (2001)
- 作者机构：
  
  中国民航学院基础科学部!天津300300,天津大学材料学院,天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC： G171
- Online First：25 March 2001，
  
  Published：25 March 2001
- 稿件说明：
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郭英, 宋诗哲. SYNERGISTIC INHIBITION OF Tw-20 AND POLYACRYLIC ACID ON IRON CORROSION IN HYDROCHLORIC ACID[J]. CIESC Journal, 2001, (3).
DOI：

郭英, 宋诗哲. SYNERGISTIC INHIBITION OF Tw-20 AND POLYACRYLIC ACID ON IRON CORROSION IN HYDROCHLORIC ACID[J]. CIESC Journal, 2001, (3). DOI：

摘要

运用稳态极化曲线、电化学阻抗谱和恒电位方波测极化阻力 (Rp)等电化学测试方法

研究了 0 .5mol·L-1HCl介质中非离子表面活性剂吐温 - 2 0 (Tw - 2 0 )在铁表面的吸附特征及其与聚丙烯酸 (PAAC)对铁腐蚀的协同缓蚀作用

证明Tw - 2 0在铁表面的吸附遵循修正的Langmuir吸附等温式

探讨了铁 /盐酸体系中Tw - 2 0与PAAC协同缓蚀作用的特点和机理

Abstract

The synergistic inhibition by nonionic surfactant Tw-20 and polyacrylic acid (PAAC) for pure iron in HCl solution is studied by using stable state polarization curves

polarization Resistace ( R p) and EIS.The results show that Tw-20 has marked synergism with PAAC on the inhibition of corrosion of iron in HCl solution. It is found that a small amount of Tw-20 could improve the protection efficiency of low-concentration PAAC in Fe/HCl system from 68?% to above 92?%.The synergistic inhibition mechanism of Tw-20 and polyacrylic acid is studied. It is show that Tw-20 is adsorpted on the iron-solution interface

improving the surface moisten degree of the iron and dispersibility of polyacrylic acid in the solution. The adsorption of polacrylic acid on the iron surface is thus improved and in this way

the inhibition characteristic of polacrylic acid is greatly improved.

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