表面技术2017，Vol.46Issue(11)：90-95,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.11.013
苯胺四聚体聚乙二醇嵌段共聚物在盐酸介质中对Q235钢的缓蚀性能
Corrosion Inhibition of PEG-TA Amphiphilic Block Copolymer on Q235 Steel in 1 mol/L HCl Medium
摘要
Abstract
The work aims to study corrosion behavior of anilinete tramer-PEG amphiphilic block copolymer (PEG-TA) on Q235 steel in 1 mol/L HCl medium. Corrosion inhibition of self-made PEG-TA on Q235 steel in 1 mol/L HCl medium was stu-died by performing static weightlessness test, electrochemical test and corrosion surface observation, and its adsorption behavior on Q235 steel was discussed. FTIR and UV spectra showed that the amphiphilic block copolymer PEG-TA was successfully made from amine-capped aniline tetramer and polyethylene glycol. Polarization curve study showed that the addition of PEG-TA could obviously inhibit the corrosion of Q235 steel in 1 mol/L HCl medium, the inhibition efficiency increased as the PEG-TA concentration increased. Provided with experimental temperature of 25℃ and mass concentration of 30 mg/L, inhibi-tion efficiency of the PEG-TA was up to 93.97%, hence PEG-TA was a cathodic inhibition-oriented mixed type inhibitor. The electrochemical impedance spectroscopy study showed that with the increase of PEG-TA concentration, charge transfer resis-tance and film resistance of surface corrosion reaction gradually increased, content and coverage of corrosion inhibitors on steel increased, corrosion inhibition improved. Adsorption of PEG-TA inhibitor molecules on Q235 steel surface adsorption coincided with Langmuir isothermal model, and was classified as physical and chemical mixed adsorption. SEM study further proved that PEG-TA could effectively inhibit the corrosion of Q235 steel in 1 mol/L HCl. PEG-TA is an effective corrosion inhibitor which can effectively improve the corrosion resistance of Q235 steel in 1 mol/L HCl.关键词
PEG-TA/Q235钢/嵌段共聚物/盐酸介质/腐蚀抑制剂/缓蚀效率Key words
PEG-TA/Q235 steel/block copolymer/HCl medium/corrosion inhibitor/inhibition efficiency分类
矿业与冶金引用本文复制引用
李香玉,杨凤,刘桐,郑文茹,赵海超,王立平..苯胺四聚体聚乙二醇嵌段共聚物在盐酸介质中对Q235钢的缓蚀性能[J].表面技术,2017,46(11):90-95,6.基金项目
中国科学院百人计划基金(Y60707WR04) （Y60707WR04）
浙江省自然科学基金(LY16B040004) Supported by the One Hundred Talented People of the Chinese Academy of Sciences (Y60707WR04) and Zhejiang Provincial Natural Science Fund (LY16B040004) （LY16B040004）
