Influence of organic-modified iron-montmorillonite on smoke-suppression properties and combustion behavior of intumescent flame-retardant epoxy composites
Influence of organic-modified iron-montmorillonite on smoke-suppression properties and combustion behavior of intumescent flame-retardant epoxy composites
复制标题
有机改性铁蒙脱土对膨胀型阻燃环氧复合材料抑烟性能及燃烧行为的影响
DOI：
10.1177/0954008314544341
复制
发表时间：
2015-03-01
影响因子：
2.1
通讯作者：
Qian, Yi
中科院分区：
文献类型：
--
作者：
Chen, Xilei;Liu, Lei;Qian, Yi
研究了有机改性蒙脱土(Fe-OMT)对阻燃环氧树脂(FREP)的抑烟性能和燃烧性能的影响。以EP树脂为基质树脂，以聚磷酸铵和季戊四醇为膨胀型阻燃剂，以Fe-OMT为抑烟阻燃协效剂，制备了一系列不同Fe-OMT含量的膨胀型FREP。然后，通过锥形量热仪测试、烟密度测试和扫描电子显微镜分析，评价了Fe-OMT对IFREP复合材料的抑烟性能。在流动氮气气氛中，用热重分析-红外光谱分析方法研究了Fe-OMT对IFREP复合材料热降解的影响。用Kisinger法和Flynn-Wall-Ozawa法研究了复合材料的热解动力学。结果表明，随着Fe-OMT含量的增加，阻燃样品的放热速率和发烟速率显著降低。Fe-OMT能提高阻燃样品的残炭率，降低发烟率。
In this article, the influence of organic-modified montmorillonite (Fe-OMT) on smoke-suppression properties and combustion behavior of flame-retardant epoxy (FREP) was investigated intensively. A series of intumescent FREPs (IFREPs) with different content of Fe-OMT were prepared based on EP resin as matrix resin, ammonium polyphosphate and pentaerythrite as intumescent flame retardants, and Fe-OMT as smoke suppressant and flame-retardant synergism. Then, the smoke-suppression properties of Fe-OMT on IFREP composites were evaluated using cone calorimeter test, smoke density test, and scanning electron microscopy analysis. The influence of Fe-OMT on thermal degradation of IFREP composites were studied by thermogravimetric analysis–infrared spectrometry in a flowing nitrogen atmosphere. The pyrolysis kinetics of the composites was investigated using Kissinger and Flynn–Wall–Ozawa methods. The results showed that the heat release rate and smoke production rate of flame-retardant samples decrease greatly with the increasing Fe-OMT content. Fe-OMT can enhance char residues of flame-retardant samples and decrease the smoke production rate.