Water-resistant and flame-retardant waterborne polyurethane coating based on hydrophobic SiO2 and microcapsule perfluorohexanone: With automated intelligent fire early warning and fire protection

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-09-08 DOI:10.1016/j.porgcoat.2025.109659

Ziheng Liu , Ya Li , Quanwei Li , Bin Fei , Renming Pan , Xia Zhou

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Abstract

This is the first report of a Waterborne Polyurethane Coating integrating microcapsule perfluorohexanone (1230) for autonomous fire suppression. The coating features a unique thermochromic system that exhibits visible color transition at 80 °C, providing real-time thermal hazard alerts, while 1230 automatically ruptures at 125 °C to release flame-suppressing agents. Hydrophobic SiO₂ nanoparticles (10 wt%) enhance surface roughness (a 32.1 % increase inwater contact angle) and catalyze condensed-phase char formation, synergizing with the gas-phase radical scavenging from 1230 to achieve a 15.7 % reduction in peak heat release rate. Comprehensive characterization, including TG, SEM, FT-IR, XPS, and XRD confirms uniform filler dispersion and chemical stability, accelerated aging tests demonstrate sustained performance under 85 % RH/55 °C and salt spray conditions, while TG-IR analysis reveals suppressed pyrolysis products, underscoring the coating's eco-friendly profile. This work provides a scalable strategy for designing multifunctional coatings, ridging gaps in fire safety, environmental durability, and intelligent fire early warning.

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以疏水性SiO2和全氟己酮微胶囊为基材的防水阻燃水性聚氨酯涂料：具有自动智能火灾预警和防火功能

本文首次报道了一种集成全氟己酮（1230）微胶囊的自主灭火水性聚氨酯涂料。该涂层具有独特的热致变色系统，在80°C时显示可见的颜色转变，提供实时热危险警报，而1230在125°C时自动破裂以释放灭火剂。疏水性SiO2纳米颗粒（10 wt%）提高了表面粗糙度（水中接触角增加了32.1%），并催化凝聚相炭的形成，与1230的气相自由基清除协同作用，使峰值热释放率降低了15.7%。包括TG、SEM、FT-IR、XPS和XRD在内的综合表征证实了填料分散均匀和化学稳定性，加速老化测试表明在85% RH/55℃和盐雾条件下性能持续，而TG- ir分析显示热解产物受到抑制，强调了涂层的环保特性。这项工作为设计多功能涂料、填补消防安全、环境耐久性和智能火灾预警方面的空白提供了一种可扩展的策略。

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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.