Titanium-boron co-doped organic-inorganic hybrid coatings with enhanced anticorrosion performance

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-08-30 DOI:10.1016/j.porgcoat.2025.109617

Haoran Guo , Rongrong Chen , Jingyuan Liu , Dalei Song , Xinlang Zuo , Gang Zhu , Qi Liu , Jing Yu , Jiahui Zhu , Peili Liu

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引用次数: 0

Abstract

Complex marine environments (high salinity, humidity, and temperature) accelerate material degradation, urgently demanding durable coatings with integrated thermal stability and corrosion protection. Currently, phenolic epoxy resins are widely used in marine environments for their excellent corrosion resistance, but their long-term durability is insufficient. In this study, phenyltriethoxysilane (PTES), dimethyldiethoxysilane (DEMS), isopropyl titanate (TPT), and boric acid are employed as functional precursors to synthesize a cross-linked titanium-boron-containing organosilicon resin (TBS) via a facile sol-gel process. The resin is subsequently incorporated into a phenolic epoxy resin (EPN) matrix as a functional modifier, constructing a composite protective system of titanium‑boron co-doped organic-inorganic hybrid coatings with synergistically enhanced anticorrosion performance. The results of the electrochemical impedance spectroscopy (EIS) test show that the hybridized coatings exhibits superior anticorrosive performance when the mass fraction of TBS is 50 %. The low-frequency impedance (|Z|_{0.01 Hz}) remains above 10¹⁰ Ω·cm² after 30 days immersion in 3.5 wt% NaCl solution. In addition, the TBS₁-EPN₁ coating retains the most intact surface after 7 days of immersion in acid/alkali solutions. Meanwhile, the heat resistance of the coating is optimized, with the initial decomposition temperature increases to 233 °C. This study provides an excellent strategy for designing high-performance anticorrosion coatings for marine hydrothermal areas.

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钛硼共掺有机无机杂化涂层的防腐性能

复杂的海洋环境（高盐度、高湿度和高温度）加速了材料的降解，迫切需要具有综合热稳定性和防腐性能的耐用涂层。目前，酚醛环氧树脂因其优异的耐腐蚀性在海洋环境中得到广泛应用，但其长期耐久性不足。本研究以苯三乙氧基硅烷（PTES）、二甲基二氧基硅烷（DEMS）、钛酸异丙酯（TPT）和硼酸为前驱体，采用溶胶-凝胶法合成了交联的含钛硼有机硅树脂（TBS）。然后将该树脂作为功能改性剂掺入酚醛环氧树脂（EPN）基体中，构建钛-硼共掺杂有机-无机杂化涂层复合防护体系，协同增强防腐性能。电化学阻抗谱（EIS）测试结果表明，当TBS质量分数为50%时，杂化涂层具有较好的防腐性能。在3.5 wt% NaCl溶液中浸泡30天后，低频阻抗（|Z|0.01 Hz）保持在1010 Ω·cm2以上。此外，TBS1-EPN1涂层在酸/碱溶液中浸泡7天后仍能保持最完整的表面。同时，涂层的耐热性得到优化，初始分解温度提高到233℃。该研究为海洋热液区高性能防腐涂料的设计提供了良好的策略。

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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.