Rivet-like high-phosphorus-nitrogen-metal nanoparticles immobilized on the surface of MXene nanosheets for improved flame protection of epoxy coatings

IF 6.5 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-05-31 DOI:10.1016/j.porgcoat.2025.109421

Chunlin Chen , Xinyu Bai , Guoqing Xiao , Fei Zhong , Yuchen Tian , Bin Wang , Chunyan Chen , Chuanlin Mou , Zhengwei Yang , Mingtan Wang

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引用次数: 0

Abstract

MXene, as an emerging two-dimensional nanomaterial, is expected to be an inorganic nano-flame retardant. Here, polydopamine (PDA) organic layers were first loaded onto MXene to enhance the flame retardancy and surface reactivity. Then, rivet-like nanoparticles formed by hexamethylene diamine tetramethylenephosphonic acid (HDTMP) containing high phosphorus‑nitrogen flame-retardant groups and metal ions (Cu²⁺ and Fe²⁺) were immobilized on the surface of MXene/PDA through coordination, obtaining the composite flame retardant MP@Fe-CuHP. The new composite flame retardant MP@Fe-CuHP effectively combined the barrier property of MXene, the excellent catalytic carbonization ability of metal ions, and the flame retardant function of N and P elements in the gas phase. The enhancement of fire resistance of waterborne epoxy coatings by MP@Fe-CuHP composite flame retardants was systematically explored. The results showed that the EP sample filled with MP@Fe-CuHP had the lowest backside temperature (168.6 °C) when directly facing the flame impingement compared to the other samples tested. Additionally, the MP@Fe-CuHP/EP samples reached the maximum expansion height and residual carbon amount of 23.3 mm and 30.3 %, respectively, which supports its high thermal insulation performance. Besides, the MP@Fe-CuHP/EP samples achieved the lowest peak heat release rate (PHRR, 443.12 kW/m²), total heat release rate (THR, 17.93 MJ/m²), peak smoke production rate (PSPR, 0.114 m²/s), total smoke production (TSP, 3.776 m²), peak CO production rate (PCOPR, 0.041 %), and peak CO₂ production rate (PCO₂PR, 0.332 %), confirming their excellent fire safety and flame retardant performance during the combustion. Therefore, the successful development of this nano-flame retardant can help to further expand the application of MXene in waterborne epoxy intumescent flame retardant coatings.

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铆钉状高磷氮金属纳米颗粒固定在MXene纳米片表面以提高环氧涂料的防火性能

MXene作为一种新兴的二维纳米材料，有望成为无机纳米阻燃剂。本文首先将聚多巴胺（PDA）有机层加载到MXene上，以增强其阻燃性和表面反应性。然后，将含有高磷氮阻燃基团的六亚乙二胺四亚甲基膦酸（HDTMP）与金属离子（Cu2+和Fe2+）通过配位固定在MXene/PDA表面形成铆钉状纳米颗粒，得到复合阻燃剂MP@Fe-CuHP。新型复合阻燃剂MP@Fe-CuHP有效地结合了MXene的阻隔性能、金属离子优异的催化碳化能力以及N、P元素在气相中的阻燃功能。系统地探讨了MP@Fe-CuHP复合阻燃剂增强水性环氧涂料的耐火性能。结果表明，与其他样品相比，填充MP@Fe-CuHP的EP样品在直接面对火焰冲击时的背面温度最低（168.6℃）。MP@Fe-CuHP/EP试样的最大膨胀高度和残碳量分别达到23.3 mm和30.3%，具有较高的保温性能。此外，MP@Fe-CuHP/EP样品的峰值放热率（PHRR, 443.12 kW/m2）、总放热率（THR, 17.93 MJ/m2）、峰值产烟率（PSPR, 0.114 m2/s）、总产烟率（TSP, 3.776 m2）、峰值CO产率（PCOPR, 0.041%）和峰值CO2产率（PCO2PR, 0.332%）最低，表明其在燃烧过程中具有良好的防火阻燃性能。因此，该纳米阻燃剂的成功开发有助于进一步扩大MXene在水性环氧膨胀型阻燃涂料中的应用。

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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.