Fabrication of multifunctional coating with anti-corrosion, weather-resistance and self-healing for Q235 steel via soft-hard hybrid architecture

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-10-06 DOI:10.1016/j.porgcoat.2025.109714

Hao Liu , Aihua Tang , Weixiang Xu , Dongxu Li , Qingsong Wu , Yizhang Yang , Yiting Xu , Birong Zeng , Conghui Yuan , Lizong Dai

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引用次数: 0

Abstract

A persistent pursuit in marine materials science is the development of strong and tough efficient anti-corrosion coatings for metal protection. Unfortunately, coating was universally challenged to balance the hardness and flexibility. Herein, this paper proposed a “soft-hard” hybrid structural strategy to integrate these properties. The coating was fabricated by embedding “hard” epoxy resins (EP) into “soft” polyurethane (PU), wherein EP cured by 4′-(p-ethanediamine phenyl)-2,2′:6′,2″-terpyridine. Diels-Alder dynamic bond, hydroxy terminated polydimethylsiloxane and functionalized boron nitride were introduced into to impart self-healing properties, hydrophobic and anti-corrosion performance. Prepared coated sample (PUSi3FET3BN) had superior hydrophobicity (114°), flexibility (43 MJ⋅m⁻³) and corrosion resistance (5 × 10⁷ Ω·cm² after 28 days immersion). Moreover, PUSi3FET3BN sample demonstrated excellent weathering resistance and self-healing, allowed damaged samples healed at 100 °C for 60 min. This ingenious strategy provides valuable insights for development of multifunctional coatings, especially for protecting equipment in extremely harsh environments.

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采用软硬混合结构制备Q235钢防腐、耐候性和自愈多功能涂层

海洋材料科学的一个持久的追求是开发坚固和坚韧的高效防腐涂层，用于金属保护。不幸的是，涂层普遍面临着平衡硬度和柔韧性的挑战。在此，本文提出了一种“软-硬”混合结构策略来整合这些特性。将“硬”环氧树脂（EP）包埋在“软”聚氨酯（PU）中，用4′-（对乙二胺苯基）-2,2′：6′，2″-三吡啶固化环氧树脂。引入Diels-Alder动态键、端羟基聚二甲基硅氧烷和功能化氮化硼，使其具有自愈、疏水和防腐性能。制备的包覆样品（pusi3fet30）具有良好的疏水性（114°）、柔韧性（43 MJ·m−3）和耐腐蚀性（浸泡28 d后5 × 107 Ω·cm2）。此外，pusi3fet30样品表现出优异的耐风化性和自愈性，允许损坏的样品在100°C下愈合60 min。这种巧妙的策略为多功能涂料的开发提供了宝贵的见解，特别是在极端恶劣的环境中保护设备。

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

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.