Durable and Hydrophobic Self-Healing Coating with Rapid Thermal Activation and Prolonged Corrosion Resistance

IF 3.9 3区化学 Q2 POLYMER SCIENCE Journal of Inorganic and Organometallic Polymers and Materials Pub Date : 2024-09-03 DOI:10.1007/s10904-024-03348-1

Yuyang Zhou, Xinming Cao, Ziheng Wang, Yang Chen, Hao Liu, Xin Liu

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Abstract

Epoxy resin coatings are widely used for corrosion protection of marine aluminum alloy equipment, but they suffer from high water absorption, brittleness, and slow repair, limiting long-term use. To address these issues, we developed an innovative self-healing coating using epoxy resin, nano-silica, a silane coupling agent, furanamine (FA), and bismaleimide (BMI). Our optimally formulated coating exhibited hydrophobicity (97°), high hardness (7 H), strong adhesion (5B), and rapid self-healing within 10 min at 80 °C, a much simpler process than previously reported. Remarkably, the coating maintained excellent self-healing and stable performance after 40 cycles of scratching and heating. Electrochemical tests and equivalent circuit fitting analysis showed superior corrosion resistance before and after scratching and healing, achieving a corrosion protection rate of 99.997%. After 300-day immersion, the coating reduced the corrosion area by 99.84% compared to pure epoxy resin, which had delaminated. This work provides a practical solution for enhancing the durability and anti-corrosion performance of epoxy coatings in marine applications.

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耐用的疏水性自愈涂层，具有快速热激活和持久耐腐蚀性能

环氧树脂涂料被广泛用于船用铝合金设备的防腐保护，但其吸水性强、脆性大、修复速度慢，限制了其长期使用。为了解决这些问题，我们利用环氧树脂、纳米二氧化硅、硅烷偶联剂、呋喃胺（FA）和双马来酰亚胺（BMI）开发了一种创新的自修复涂层。我们优化配制的涂层具有疏水性（97°）、高硬度（7 H）、强附着力（5B），并能在 80 °C 下 10 分钟内快速自愈合，比以前报道的工艺简单得多。值得注意的是，涂层在经过 40 次划痕和加热后仍能保持良好的自愈性和稳定的性能。电化学测试和等效电路拟合分析表明，涂层在划痕和愈合前后都具有优异的耐腐蚀性能，腐蚀保护率达到 99.997%。浸泡 300 天后，与已经分层的纯环氧树脂相比，涂层的腐蚀面积减少了 99.84%。这项工作为提高环氧涂层在海洋应用中的耐久性和防腐性能提供了一种实用的解决方案。

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来源期刊

Journal of Inorganic and Organometallic Polymers and Materials 化学-高分子科学

CiteScore

8.30

自引率

7.50%

发文量

335

审稿时长

1.8 months

期刊介绍： Journal of Inorganic and Organometallic Polymers and Materials [JIOP or JIOPM] is a comprehensive resource for reports on the latest theoretical and experimental research. This bimonthly journal encompasses a broad range of synthetic and natural substances which contain main group, transition, and inner transition elements. The publication includes fully peer-reviewed original papers and shorter communications, as well as topical review papers that address the synthesis, characterization, evaluation, and phenomena of inorganic and organometallic polymers, materials, and supramolecular systems.