Synergistic flame retardancy of MIL-88B-Fe metal–organic framework with aluminum diethyl hypophosphite in epoxy resin

IF 3.6 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2025-03-06 DOI:10.1002/vnl.22210

Song Wang, Xiaoran Wang

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引用次数: 0

Abstract

Four metal–organic frameworks (MOFs), namely MIL-88B-Fe, MIL-53-Fe, Co-MOF, and Ni-MOF, were successfully prepared using polyethylene terephthalate (PET) waste as the raw material. The structure and morphology of the prepared MOFs were characterized using scanning electron microscopy (SEM) and X-ray diffraction (XRD). Subsequently, the synergistic flame retardancy of these MOFs with aluminum diethylphosphinate (ADP) in epoxy resin (EP) was compared. The prepared MOFs, in particular MIL-88B-Fe, exhibited significant synergistic flame retardancy when used in combination with ADP. When the addition amount of MIL-88B-Fe and ADP in EP was 4% with the MIL-88B-Fe to ADP weight ratio at 1:19, the prepared flame-retardant EP, EP/Fe88B-ADP-2:38, successfully achieved a high limiting oxygen index (LOI) value of 34.2%. Thermogravimetric analysis (TGA) results indicated that the residual carbon amount in EP/Fe88B-ADP-2:38 increased by approximately 6.6% compared to pure EP. Additionally, the peak heat release rate (PHRR) of EP/Fe88B-ADP-2:38 decreased by 30.2% compared to pure EP. EP/Fe88B-ADP-2:38 also demonstrated excellent smoke suppression, with a 16.5% decrease in total smoke production (TSP) compared to EP. These studies have provided new insights into the efficient utilization of PET waste. The synergistic flame retardant, composed of PET waste-derived MIL-88B-Fe and ADP, can enhance the flame retardancy of EP while preserving EP's mechanical properties.

Highlights

PET waste-derived MIL-88B-Fe showed synergistic flame retardancy with ADP.
4% MIL-88B-Fe and ADP at a 1:19 weight ratio in EP reached a UL-94 V-0 rating.
MIL-88B-Fe/ADP flame retardant hardly decreased the EP mechanical properties.

Abstract Image

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MIL-88B-Fe金属有机骨架与次磷酸二乙酯铝在环氧树脂中的协同阻燃性能

以聚对苯二甲酸乙二醇酯（PET）废弃物为原料，成功制备了MIL-88B-Fe、MIL-53-Fe、Co-MOF和Ni-MOF四种金属有机骨架（mof）。利用扫描电子显微镜（SEM）和x射线衍射仪（XRD）对所制备的mof进行了结构和形貌表征。随后，比较了这些mof与磷酸二乙基铝（ADP）在环氧树脂（EP）中的协同阻燃性能。制备的mof，特别是MIL-88B-Fe，与ADP结合使用时表现出显著的协同阻燃性。当MIL-88B-Fe和ADP在EP中的添加量为4%，MIL-88B-Fe与ADP的质量比为1:19时，制备的阻燃EP/ fe88b -ADP为2:38，其极限氧指数（LOI）达到了34.2%。热重分析（TGA）结果表明，EP/Fe88B-ADP-2:38的残余碳量比纯EP增加了约6.6%。EP/Fe88B-ADP-2:38的峰值放热率（PHRR）比纯EP降低了30.2%。EP/Fe88B-ADP-2:38也表现出良好的抑烟效果，与EP相比，总产烟量（TSP）降低了16.5%。这些研究为PET废弃物的高效利用提供了新的思路。由PET废渣衍生的MIL-88B-Fe和ADP组成的增效阻燃剂，可以在保持EP力学性能的同时增强EP的阻燃性能。PET废弃物衍生的MIL-88B-Fe与ADP具有协同阻燃性。4% MIL-88B-Fe和ADP以1:19的重量比在EP中达到UL-94 V-0额定值。MIL-88B-Fe/ADP阻燃剂几乎没有降低EP力学性能。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.