环氧树脂中提高阻燃性的红色phosphorus@MgAl-layered双氢氧化物静电自组装

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects Pub Date : 2025-05-01 DOI:10.1016/j.nanoso.2025.101482

Yongkang Zhou , Ting Xiang , Lifen Xiao , Hua Lai , Geng Huang , Wei Li , Ye-Tang Pan , Henri Vahabi

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引用次数: 0

摘要

使用一种简单的方法创造高性能阻燃剂对于满足对可持续和无毒阻燃剂日益增长的需求至关重要。将红磷（RP）与镁铝层状双氢氧化物（LDHs）通过静电组装封装，形成RP@LDH复合材料。将这些复合材料掺入不同浓度的环氧树脂（EP）中，以评估其热和可燃性性能。7 wt% RP@LDH的EP复合材料获得了37.5% %的极限氧指数（LOI）和UL-94 V-0等级。与纯EP相比，该复合材料的残碳量增加了16.3% %，峰值放热率、总放热率和一氧化碳排放量分别降低了41.1% %、37.9% %和40.8% %。这种增强是由于在燃烧过程中LDH和RP分解产物形成的保护屏障，这也抑制了易燃副产物的形成。同时有效提高了EP复合材料的力学性能。这种协同作用为开发先进的聚合物阻燃系统提供了宝贵的见解。

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Electrostatic self-assembly of red phosphorus@MgAl-layered double hydroxide for improved flame retardancy in epoxy resin

The creation of high-performance flame retardants using a simple method is essential to align with the increasing demand for sustainable and non-toxic flame retardants. Red phosphorus (RP) was encapsulated with magnesium-aluminum-layered double hydroxides (LDHs) through electrostatic assembly to form RP@LDH composites. These composites were incorporated into epoxy resin (EP) at varying concentrations to evaluate their thermal and flammability performance. The EP composite with 7 wt% RP@LDH achieved a limiting oxygen index (LOI) of 37.5 % and a UL-94 V-0 rating. Compared to pure EP, this composite demonstrated a 16.3 % increase in carbon residue and reductions of 41.1 %, 37.9 %, and 40.8 % in peak heat release rate, total heat release, and carbon monoxide emissions, respectively. The enhancements are attributed to a protective barrier formed by LDH and RP decomposition products during combustion, which also suppress flammable by-product formation. Simultaneously enhanced the mechanical properties of EP composite materials effectively. This synergistic interaction provides valuable insights into developing advanced flame-retardant systems for polymer applications.

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来源期刊

Nano-Structures & Nano-Objects Physics and Astronomy-Condensed Matter Physics

CiteScore

9.20

自引率

0.00%

发文量

审稿时长

22 days

期刊介绍： Nano-Structures & Nano-Objects is a new journal devoted to all aspects of the synthesis and the properties of this new flourishing domain. The journal is devoted to novel architectures at the nano-level with an emphasis on new synthesis and characterization methods. The journal is focused on the objects rather than on their applications. However, the research for new applications of original nano-structures & nano-objects in various fields such as nano-electronics, energy conversion, catalysis, drug delivery and nano-medicine is also welcome. The scope of Nano-Structures & Nano-Objects involves: -Metal and alloy nanoparticles with complex nanostructures such as shape control, core-shell and dumbells -Oxide nanoparticles and nanostructures, with complex oxide/metal, oxide/surface and oxide /organic interfaces -Inorganic semi-conducting nanoparticles (quantum dots) with an emphasis on new phases, structures, shapes and complexity -Nanostructures involving molecular inorganic species such as nanoparticles of coordination compounds, molecular magnets, spin transition nanoparticles etc. or organic nano-objects, in particular for molecular electronics -Nanostructured materials such as nano-MOFs and nano-zeolites -Hetero-junctions between molecules and nano-objects, between different nano-objects & nanostructures or between nano-objects & nanostructures and surfaces -Methods of characterization specific of the nano size or adapted for the nano size such as X-ray and neutron scattering, light scattering, NMR, Raman, Plasmonics, near field microscopies, various TEM and SEM techniques, magnetic studies, etc .