Multifunctional anti-corrosion coatings based on 2D/3D structure-function integrated nanomaterials for steel protection

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-04-26 DOI:10.1016/j.porgcoat.2025.109335

Dashuai Yan , Zhen Chen , Wenjuan Zhang , Yanli Wang , Liman Chen

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引用次数: 0

Abstract

Most conventional organic anti-corrosion coatings cannot provide long-term protection for metals due to their limited functionality. Here, a smart anti-corrosion coating (ZLIP/EP) is developed by incorporating a 2D/3D structure-function integrated nanomaterial (ZLIP) into the coating matrix. ZLIP consists of polyethylene glycol (PEG)-encapsulated dodecahedral layered double hydroxide (LDH) nanocages, which contain corrosion inhibitor imidazoline (IM). Compared to ZIF-67 added to the coating, the 2D LDH layers of ZLIP can effectively extend the electrolyte solution's penetration path within the coating. When the composite coating is damaged, the LDH layers can capture chloride ions in the electrolyte solution, while IM is released to suppress corrosion. Moreover, the IM stored in the unique 3D hollow structure of ZLIP can also be released and subsequently adsorbed onto the steel substrate to further improve the active corrosion protection ability of the coating. The electrochemical test reveal that the |Z|_0.01Hz of ZLIP/EP remains as high as 68.8 MΩ·cm² after long-term immersion (40 days), demonstrating superior corrosion resistance. The ZLIP/EP system developed in this study shows significant promise for practical anti-corrosion applications.

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基于二维/三维结构-功能集成纳米材料的多功能钢防护防腐涂层

大多数传统的有机防腐蚀涂层由于其有限的功能而不能为金属提供长期保护。在这里，通过将2D/3D结构-功能集成纳米材料（ZLIP）结合到涂层基体中，开发了一种智能防腐涂层（ZLIP/EP）。ZLIP由聚乙二醇（PEG）包封的十二面体层状双氢氧化物（LDH）纳米笼组成，其中含有缓蚀剂咪唑啉（IM）。与添加到涂层中的ZIF-67相比，ZLIP的二维LDH层可以有效地延长电解质溶液在涂层内的渗透路径。当复合涂层被破坏时，LDH层可以捕获电解质溶液中的氯离子，同时释放IM抑制腐蚀。此外，储存在ZLIP独特的三维中空结构中的IM也可以被释放并随后吸附到钢基体上，进一步提高涂层的主动防腐能力。电化学测试表明，ZLIP/EP经过长时间浸渍（40天）后，|Z|0.01Hz仍保持在68.8 MΩ·cm2，具有较好的耐腐蚀性。本研究开发的ZLIP/EP系统在实际防腐应用中具有重要的前景。

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.