| 水性丙烯酸聚氨酯涂料中反应性缓蚀剂掺入及其耐蚀性能 |
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| 引用本文： | 顾林,丁纪恒,刘栓,余海斌.水性丙烯酸聚氨酯涂料中反应性缓蚀剂掺入及其耐蚀性能[J].化学物理学报,2016,29(2):271-278. |
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| 作者姓名： | 顾林 丁纪恒 刘栓 余海斌 |
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| 作者单位： | 中国科学院海洋新材料与应用技术重点实验室, 浙江省海洋材料与防护技术重点实验室, 中国科学院宁波材料技术与工程研究所, 宁波 315201,中国科学院海洋新材料与应用技术重点实验室, 浙江省海洋材料与防护技术重点实验室, 中国科学院宁波材料技术与工程研究所, 宁波 315201;南京理工大学化工学院, 南京 210094,中国科学院海洋新材料与应用技术重点实验室, 浙江省海洋材料与防护技术重点实验室, 中国科学院宁波材料技术与工程研究所, 宁波 315201;南京理工大学化工学院, 南京 210094,中国科学院海洋新材料与应用技术重点实验室, 浙江省海洋材料与防护技术重点实验室, 中国科学院宁波材料技术与工程研究所, 宁波 315201 |
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| 基金项目： | This work is supported by the National Natural Science Foundation of China (No.21404112), the China Postdoctoral Science Foundation (No.2014M561798) and the Ningbo Natural Science Foundation (No.2015A610016). We thank Dr. Qing-yun Wu from Ningbo University for the suggestion and discussion. |
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| 摘 要： | 利用磷酸和双酚A环氧树脂反应得到功能性缓蚀剂羟基环氧磷酸酯(HEP). 将其添加到水性羟基丙烯酸树脂中,再与水性异氰酸酯固化剂交联,制备了水性羟基环氧磷酸酯/丙烯酸聚氨酯复合涂层(HEP-APU). 由于磷酸酯基团可以与金属基体发生反应,在金属表面形成一层磷化膜,极大的提升了金属的抗闪蚀能力. 利用电化学阻抗谱和极化曲线研究HEP-APU复合涂层对Q235碳钢在3.5wt% NaCl溶液中耐蚀性能. 结果表明,HEP-APU涂料对Q235碳钢具有优越的钝化和耐腐性能,且当HEP在水性丙烯酸聚氨酯涂料中质量分数为0.5%时,所得到的复合涂层的防腐性能最佳.
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| 关 键 词： | 羟基环氧磷酸酯 丙烯酸聚氨酯 EIS 耐蚀性能 钝化 |
| 收稿时间： | 2015/7/20 0:00:00 |
| 修稿时间： | 2015/11/7 0:00:00 |
Incorporation of Reactive Corrosion Inhibitor in Waterborne Acrylic Polyurethane Coatings and Evaluation of its Corrosion Performance |
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| Lin Gu,Ji-heng Ding,Shuan Liu and Hai-bin Yu.Incorporation of Reactive Corrosion Inhibitor in Waterborne Acrylic Polyurethane Coatings and Evaluation of its Corrosion Performance[J].Chinese Journal of Chemical Physics,2016,29(2):271-278. |
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| Authors: | Lin Gu Ji-heng Ding Shuan Liu and Hai-bin Yu |
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| Institution: | Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Ma-rine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China,Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Ma-rine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China;School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China,Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Ma-rine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China;School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China and Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Ma-rine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China |
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| Abstract: | Hydroxyl-epoxy phosphate (HEP) as a reactive corrosion inhibitor was innovatively synthesized by the reaction of bisphenol A epoxy resin with phosphoric acid. HEP was mixed with hydroxyl acrylate resin, and crosslinked with waterborne isocyanate curing agent, which was used to form waterborne HEP/acrylic polyurethane composite (HEP-APU) coatings on Q235 steel surfaces. Electrochemical impedance spectroscopy and polarization curves were applied to analyze the corrosion behavior of the HEP-APU coatings in 3.5wt% NaCl solutions. The results indicated that the HEP-APU coatings show a superior passivation property and efficient corrosion protection of Q235 steel. The waterborne acrylic polyurethane coating containing 0.5wt% HEP exhibited the best corrosion performance among all the coating specimens. The improved flash-rust resistance can be attributed to the introduction of the phosphate group which could form phosphate film on the steel substrate. |
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| Keywords: | Hydroxyl-epoxy phosphate Acrylic polyurethane Electrochemical impedance spectroscopy Corrosion performance Passivation |
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