Intumescent Flame Retardancy and Thermal Degradation of Epoxy Resin Filled with Ammonium Polyphosphate Using Thermogravimetric Analysis–Fourier Transform Infrared Spectroscopy and Thermogravimetric Analysis–Mass Spectrometry
Intumescent Flame Retardancy and Thermal Degradation of Epoxy Resin Filled with Ammonium Polyphosphate Using Thermogravimetric Analysis–Fourier Transform Infrared Spectroscopy and Thermogravimetric Analysis–Mass Spectrometry
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DOI：
10.1080/00222348.2013.810101
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发表时间：
2014-01
期刊：
影响因子：
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通讯作者：
Qu Hongqiang;Wu Weihong;Hao Jian-wei;Sun Jian-hong;Xu Jianzhong
中科院分区：
文献类型：
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作者：
Qu Hongqiang;Wu Weihong;Hao Jian-wei;Sun Jian-hong;Xu Jianzhong
通过极限氧指数(LOI)、UL 94和锥形量热仪测试研究了环氧树脂(EP)及其与聚磷酸铵的复合材料(EPAPP)的可燃性。使用热重分析与傅里叶变换红外光谱 (TG-FTIR) 和热重分析与质谱分析 (TG-MS) 相结合，对 EP 和 EPAPP 的热降解进行了系统的比较评估。结果表明，阻燃剂聚磷酸铵（APP）可与EP构成膨胀型阻燃剂（IFR）体系，APP可有效提高EP的LOI；当APP添加量为6wt%时，EPAPP可以通过UL 94 V 0测试。锥形量热仪测试结果表明，APP处理后EP的阻燃性、抑烟性显着提高，一氧化碳、二氧化碳等有毒气体产物明显减少。热重-傅里叶变换红外光谱和TG-MS结果表明EP降解过程中产生大量气体产物，主要成分为水、二氧化碳、甲烷、苯及其衍生物、苯酚及其衍生物。与EP相比，EPAPP样品的分解产物种类没有明显变化，只是产生了更多的氨气。对于 EPAPP 样品，分解过程中水、苯和苯酚的产物增加，而二氧化碳和易燃烃碎片 CxHy 显着减少。
The flammability of epoxy resin (EP) and its composite with ammonium polyphosphate (EPAPP) was investigated with limiting oxygen index (LOI), UL 94, and cone calorimeter tests. A systematic and comparative evaluation of the thermal degradation of EP and EPAPP has been investigated using thermogravimetry coupled with Fourier transform infrared spectroscopy (TG–FTIR) and thermogravimetry coupled with mass spectrometry (TG–MS). The results showed that the flame retardant of ammonium polyphosphate (APP) can constitute an intumescent flame retardant (IFR) system with EP, and APP can effectively improve the LOI of EP; with 6 wt% addition level of APP, EPAPP can pass UL 94 V 0 test. The cone calorimeter test results showed that the flame retardancy and smoke suppression of EP were significantly improved by APP, and toxic gas products such as carbon monoxide and carbon dioxide obviously decreased. Thermogravimetry–Fourier transform infrared spectroscopy and TG–MS results showed that the degradation process of EP produces large amounts of gas products and mainly containing of water, carbon dioxide, methane, benzene and its derivatives, as well as phenol and its derivatives. Compared to EP, the kinds of decomposition products of EPAPP sample were not changed significantly, except that more ammonia gas was generated. For the EPAPP sample, the products of water, benzene, and phenol increased, whereas the carbon dioxide and the flammable hydrocarbon fragments CxHy decreased significantly during the decomposition.