Anticorrosive coating from mussel-inspired hyperbranched epoxy resin with high mechanical properties and corrosion resistance

IF 3.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2024-11-18 DOI:10.1007/s10853-024-10412-1

Qiaoyin Li, Aijie Ma, Yuming Chen, Qiao Zhang, Wei Wang, Haoqiang Liu, Weifeng Zhao, Hongwei Zhou

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引用次数: 0

Abstract

The corrosion problem of metals has caused significant economic losses and safety risks in industrial production. Therefore, it is imperative to take measures to against corrosion. This study develops a new type of hyperbranched epoxy resin for anticorrosive coatings that contain catechol groups similar to mussels. The anticorrosive epoxy coating exhibits extremely high hardness and strength, outstanding thermal stability, excellent adhesion, as well as remarkable resistance to water and salt spray. The results of mechanical test showed that the tensile strength of the coatings could achieve as high as 63 MPa and their pencil hardness reached 8 H. After 30 days of immersion in saltwater, the pencil hardness could still keep 6 H, respectively. Furthermore, compared with the HBEP coating, the PCA-modified coating exposed to salt spray environment for 30 days shows less corrosion on both its surface and scratch area. This new type of coating has tremendous potential applications in areas such as marine metal protection.

Graphical abstract

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由贻贝启发的超支化环氧树脂制成的防腐涂料具有高机械性能和耐腐蚀性能

金属腐蚀问题给工业生产带来了巨大的经济损失和安全隐患。因此，采取防腐蚀措施势在必行。本研究开发了一种用于防腐涂层的新型超支化环氧树脂，它含有类似贻贝的儿茶酚基团。这种防腐环氧涂层具有极高的硬度和强度、出色的热稳定性、优异的附着力以及显著的耐水和耐盐雾性能。力学测试结果表明，涂层的拉伸强度高达 63 兆帕，铅笔硬度达到 8 H，在盐水中浸泡 30 天后，铅笔硬度仍能保持 6 H。此外，与 HBEP 涂层相比，在盐雾环境中暴露 30 天的 PCA 改性涂层的表面和划痕区域的腐蚀程度都较低。这种新型涂层在海洋金属保护等领域具有巨大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.