Preparation of Metal-Organic Frameworks and Their Application as Flame Retardants for Polystyrene
Preparation of Metal-Organic Frameworks and Their Application as Flame Retardants for Polystyrene
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DOI：
10.1021/acs.iecr.6b04920
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发表时间：
2017-03-01
影响因子：
4.2
通讯作者：
Hu, Yuan
中科院分区：
文献类型：
--
作者：
Hou, Yanbei;Hu, Weizhao;Hu, Yuan
在这项工作中，通过简便的溶剂热方法成功合成了铁基和钴基金属有机骨架（MOF）。首次将所得MOFs作为阻燃剂添加到聚苯乙烯(PS)中。热重分析和锥形量热结果表明，MOF的添加显着增强了PS复合材料的热稳定性和阻燃性。与纯 PS 相比，PS/Fe-MOF 和 PS/Co-MOF 的峰值放热率分别降低了 14% 和 28%，这表明 MOF 具有阻燃作用。基于热重分析红外光谱结果和燃烧残留物分析，提出了PS复合材料增强热稳定性和阻燃性的可能机制是MOFs的热障效应和催化效应的结合，这将在防火高分子材料的开发中具有广阔的应用前景。
In this work, iron-based and cobalt-based metal organic frameworks (MOFs) were successfully synthesized by a facile solvothermal method. The obtained MOFs were added into polystyrene (PS) as flame retardants for the first time. The results of thermal gravimetric analysis and cone calorimetry indicated the addition of MOFs significantly enhanced the thermostability and flame retardancy of the PS composites. Compared with that of neat PS, greater than 14% and 28% decreases in the peak heat release rate were observed for PS/Fe-MOF and PS/Co-MOF, respectively, suggesting a flame retardant effect of MOFs. Based on thermogravimetric analysis infrared spectrometry results and the analysis of combustion residues, the possible mechanism of the enhanced thermostability and flame retardancy of the PS composites was proposed as the combination of thermal barrier effect and catalytic effect of MOFs, which would allow promising application in the development of fire safety polymer materials.