通过静电相互作用制备MBenes和生物质MOF杂化阻燃剂，提高环氧树脂的阻燃抑烟性能

IF 7.4 2区化学 Q1 POLYMER SCIENCE

Polymer Degradation and Stability Pub Date : 2025-08-19 DOI:10.1016/j.polymdegradstab.2025.111616

Ge Zhang , Yunhong Jiao , Yuying Yang , Xin Gao , Ye-Tang Pan , Jun Sun , Hongqiang Qu , Jianzhong Xu

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引用次数: 0

摘要

MXenes是一种新兴的二维层状纳米材料，但其在环氧树脂中的阻燃性仍然有限。在这项研究中，由生物来源的腺嘌呤、3,5-吡唑-2-羧酸和Ni 2 +离子合成了金属有机框架（MOF）。经六氯环三磷腈改性后，通过静电相互作用与MBenes纳米片结合，合成生物基有机无机杂化阻燃剂（PMOF@MB），并应用于EP。值得注意的是，与纯EP相比，仅添加1wt % PMOF@MB可将EP复合材料的峰值放热率（PHRR）、总放热率（THR）、峰值CO产量（PCOP）和峰值CO₂产量（PCO2P）分别降低56%、30%、62%和62%。PMOF@MB燃烧后生成的NiO和NiMoO4催化CO氧化，形成保护炭层，抑制了热和有毒烟雾的产生，从而提高了EP的耐火性。本研究为制备低添加量阻燃环保型EP复合材料提供了理论支持。

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Preparation of MBenes and biomass MOF hybrid flame retardant through electrostatic interaction for enhancing the flame retardancy and smoke suppression performance of epoxy resin

MXenes was an emerging two-dimensional layered nanomaterial, but its flame retardancy in epoxy resins remained limited. In this study, a metal-organic framework (MOF) was synthesized from biomass-derived adenine, 3,5-pyrazole-2-carboxylic acid, and Ni²⁺ ions. After modification with hexachlorocyclotriphosphazene, it was combined with MBenes nanosheets through electrostatic interactions to synthesize bio-based organic-inorganic hybrid flame retardants (PMOF@MB), and apply it to EP. Remarkably, incorporating only 1 wt% PMOF@MB reduced the peak heat release rate (PHRR), total heat release (THR), peak CO production (PCOP), and peak CO₂ production (PCO₂P) of the EP composite by 56 %, 30 %, 62 %, and 62 %, respectively, compared to pure EP. The NiO and NiMoO₄ produced after PMOF@MB combustion catalyzed CO oxidation, formed a protective char layer, suppressed heat and toxic smoke generation, and consequently enhanced the fire resistance of EP. This work provided theoretical support for the preparation of low additive flame retardant and environmentally friendly EP composites.

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来源期刊

Polymer Degradation and Stability 化学-高分子科学

CiteScore

10.10

自引率

10.20%

发文量

325

审稿时长

23 days

期刊介绍： Polymer Degradation and Stability deals with the degradation reactions and their control which are a major preoccupation of practitioners of the many and diverse aspects of modern polymer technology. Deteriorative reactions occur during processing, when polymers are subjected to heat, oxygen and mechanical stress, and during the useful life of the materials when oxygen and sunlight are the most important degradative agencies. In more specialised applications, degradation may be induced by high energy radiation, ozone, atmospheric pollutants, mechanical stress, biological action, hydrolysis and many other influences. The mechanisms of these reactions and stabilisation processes must be understood if the technology and application of polymers are to continue to advance. The reporting of investigations of this kind is therefore a major function of this journal. However there are also new developments in polymer technology in which degradation processes find positive applications. For example, photodegradable plastics are now available, the recycling of polymeric products will become increasingly important, degradation and combustion studies are involved in the definition of the fire hazards which are associated with polymeric materials and the microelectronics industry is vitally dependent upon polymer degradation in the manufacture of its circuitry. Polymer properties may also be improved by processes like curing and grafting, the chemistry of which can be closely related to that which causes physical deterioration in other circumstances.