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A review on metal-organic hybrids as flame retardants for enhancing fire safety of polymer composites
Composites Part B: Engineering ( IF 13.1 ) Pub Date : 2021-05-27 , DOI: 10.1016/j.compositesb.2021.109014
Yanbei Hou , Zhoumei Xu , Fukai Chu , Zhou Gui , Lei Song , Yuan Hu , Weizhao Hu

Metal-organic flame retardants (MOFRs) have been constantly applied to enhance fire safety of polymers. Metallic compounds positively improve the MOFRs’ performance in suppressing smoke and toxic gases emissions during combustion of polymers. While organics endow MOFRs with the possibility of high efficiency and excellent compatibility. Based on the combination types between organics and metallic compounds, MOFRs are systematically divided into three categories in this review, that is, organic modified inorganic flame retardants (OMIFRs), metal-organic salts (MOSs) and metal-organic frameworks (MOFs). Metallic components in OMIFRs are bonded with organics in three approaches: encapsulation, intercalation and chemical grafting. Metal ions in MOSs can be replaced via ion-exchange method and thus produce different organometallic salts. Based on sodium alginate, phytic acid and phosphate, various high-efficiency flame-retardant alginates, phytates and metal-organic phosphates are synthesized and applied. As burgeoning flame-retardant substance, MOFs are divided into different types based on types of ligands, that is 2-MIM, aromatic polyacids, and other synthesized materials. Under guidelines of molecular design and metal-organic synergistic flame-retardant mechanisms, MOFRs will be continuously updated and developed. This review summarizes combustion behaviors of polymer/MOFRs composites and presents short comments about upcoming research opportunities and challenges in this field.



中文翻译:

金属有机杂化物作为阻燃剂增强聚合物复合材料防火安全的综述

金属有机阻燃剂 (MOFR) 已不断应用于提高聚合物的防火安全性。金属化合物积极提高 MOFR 在聚合物燃烧过程中抑制烟雾和有毒气体排放的性能。而有机物则赋予了 MOFRs 高效率和极好的兼容性的可能性。本文根据有机物与金属化合物的组合类型,将MOFRs系统地分为三类,即有机改性无机阻燃剂(OMIFRs)、金属有机盐(MOSs)和金属有机骨架(MOFs)。OMIFR 中的金属成分通过三种方法与有机物结合:封装、嵌入和化学接枝。MOSs 中的金属离子可以通过离子交换方法被取代,从而产生不同的有机金属盐。以海藻酸钠、植酸和磷酸盐为基础,合成并应用了各种高效阻燃的海藻酸盐、植酸盐和金属有机磷酸盐。作为新兴的阻燃物质,MOFs根据配体的类型分为不同的类型,即2-MIM、芳香族多元酸和其他合成材料。在分子设计和金属有机协同阻燃机制的指导下,MOFRs 将不断更新和发展。这篇综述总结了聚合物/MOFRs 复合材料的燃烧行为,并对这一领域即将到来的研究机遇和挑战提出了简短的评论。MOFs根据配体的类型分为不同的类型,即2-MIM、芳香族多元酸和其他合成材料。在分子设计和金属有机协同阻燃机制的指导下,MOFRs 将不断更新和发展。这篇综述总结了聚合物/MOFRs 复合材料的燃烧行为,并对这一领域即将到来的研究机遇和挑战提出了简短的评论。MOFs根据配体的类型分为不同的类型,即2-MIM、芳香族多元酸和其他合成材料。在分子设计和金属有机协同阻燃机制的指导下,MOFRs 将不断更新和发展。这篇综述总结了聚合物/MOFRs 复合材料的燃烧行为,并对这一领域即将到来的研究机遇和挑战提出了简短的评论。

更新日期:2021-05-30
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