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从热重分析、热解活化能以及红外光谱等几个方面研究了氧化锰(MnO2)对以聚磷酸铵(APP)为酸源,季戊四醇(PER)为炭源,蜜胺为气源的经典膨胀型阻燃剂(IFR)热分解性能的影响。从傅立叶红外光谱的角度看,300~400℃时MnO2的存在加快了体系的分解和无机酸的生成速度,改变了IFR热解发生的时间,但是并没有从根本上改变热解过程。从表观活化能的角度看MnO2的添加提高了IFR阻燃剂第一、二阶段的热解活化能,降低了第三、四阶段的热解活化能。热重分析显示MnO2对IFR分解最后阶段残留量影响最大。
From the aspects of TGA, FT activation energy and infrared spectroscopy, the effects of MnO2 on the energy source of APP (ammonium polyphosphate), pentaerythritol (PER) as carbon source and melamine as gas source Effect of Intumescent Flame Retardant (IFR) on Thermal Decomposition Properties. From the perspective of Fourier transform infrared spectroscopy, the presence of MnO2 accelerates the decomposition of the system and the formation rate of inorganic acids at 300-400 ℃ and changes the time of IFR pyrolysis, but does not fundamentally change the pyrolysis process. From the perspective of apparent activation energy, the addition of MnO2 improves the first and second stages of pyrolysis activation energy of IFR flame retardant and reduces the third and fourth stages of pyrolysis activation energy. Thermogravimetric analysis showed that MnO2 had the greatest effect on the final IFR decomposition residues.