碱性响应型纳米静电纺丝的制备及自修复涂层的防腐性能研究

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中文摘要：本文以聚丙烯腈(PAN)负载缓蚀剂1-丁基-3-甲基咪唑四氟硼酸盐([BMIM)]BF4)，利用静电纺丝技术合成PAN/[BMIM]BF4纳米纤维。将醇酸清漆涂覆在纤维膜上制备复合涂层，并对复合涂层的自愈性能和防腐性能进行研究。通过扫描电镜观察到纤维形态稳定，不存在珠状结构。利用傅里叶红外光谱分析了复合纤维的组成，证实了复合纳米纤维的成功制备。利用三维激光共聚焦扫描显微镜观察碳钢的腐蚀形态和腐蚀剖面，复合涂层具有良好的自修复性能。[BMIM]BF4可在碱性环境下通过物理吸附或化学吸附在裸碳钢基材表面形成保护膜。利用电化学阻抗谱分析和测试得知，在3。5 wt。％的碱性NaCl溶液中，涂层的最大缓蚀效率为88。5％。与不含纳米纤维的涂层相比，复合纤维清漆复合涂层具有良好的自修复和抗腐蚀性能。

外文标题：Preparation of alkaline-responsive nano-electrospinning and anticorrosion properties of self-healing coating

外文摘要：In this paper,1-butyl-3-methylimidazole tetrafluoroborate([BMIM]BF4)is used as corrosion inhibitor.Polyacrylonitrile(PAN)is used to load the corrosion inhibitor.PAN/[BMIM]BF4 hybrid nanofibers are successfully synthesized by electrospinning technology.The alkyd varnish is coated on the fiber membrane to prepare a composite coating,and then a series of tests are carried out on the self-healing and anticorrosive performance of the composite coating.It is observed by scanning electron microscope that the fiber morphology is stable and there is no bead-like structure.The composition of the composite fiber is analyzed by Fourier infrared spectroscopy,and it is confirmed that the hybrid nanofiber was successfully prepared.3D laser confocal scanning microscope was used to observe the corrosion morphology and profile of the carbon steel.The composite coating shows good self-healing performance.[BMIM]BF4 can form a protective film on the surface of the bare carbon steel substrate through physical adsorption or chemical adsorption in an alkaline environment.Electrochemical impedance spectroscopy was tested and analyzed.It is found that the maximum corrosion inhibition efficiency of the coating is 88.5％in 3.5 wt.％alkaline NaCl solution.Compared with the blank coating without nanofibers,the composite fiber varnish composite coating exhibits good self-healing and anti-corrosion properties.

外文关键词：

electrospinningself-healing coatingalkaline-responsivecorrosion protection

作者：

纪文会、曹琳、纪小红、彭黎明、MYRONYUK Oleksiy、韩东晓、裴炎彤、李伟华、王巍

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作者单位：

School of Materials Science and Engineering,Ocean University of China,Qingdao 266100,China

Key Laboratory of Advamced Marine Materials,Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China

Hubei Keying New Materials Technology Co.,Ltd.,Zhongxiang 431900,China

Department of Chemical Technology of Composite Materials,National Technical University of Ukraine"Kyiv Polytechnic Institute",Kyiv 03056,Ukraine

Beijing Shiny Tech.Co.Ltd.,Beijing 100039,China

Institute of Chemistry,Henan Academy of Sciences,Zhengzhou 450046,China

North China University of Water Resources and Electric Power,Zhengzhou 450046,China

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关键词：

静电纺丝自修复涂层碱性响应腐蚀防护

出版年：

2024

DOI：

10.1007/s11771-024-5781-6