红外光谱法研究GAP的热分解  

Investigation on thermal decomposition of GAP by FTIR spectroanalysis

作　　者：张腊莹[1] 刘子如[1] 王晓红[1] 衡淑云[1] 潘清[1] 赵凤起[1] 

机构地区：[1]西安近代化学研究所火炸药燃烧国防科技重点实验室,西安710065

出　　处：《固体火箭技术》2010年第5期549-553,共5页Journal of Solid Rocket Technology

基　　金：武器装备预研基金项目(9140C3505030708)

摘　　要：采用T-Jump/FTIR和热裂解原位/FTIR联用技术,分别研究了GAP的快速热裂解和慢加热速率分解过程。在不同压力的高纯氮气条件下,以1 000℃/s的升温速率达到设定的温度(600℃和1 000℃)快速分解,用快速扫描傅立叶变换红外光谱跟踪分析分解产物的种类和浓度变化。结果表明,GAP首先由叠氮基N3分解生成亚胺中间产物,该产物经历生成HCN和NH3的2个竞争反应过程继续分解。根据快速热裂解气相产物HCN/NH3比值随温度和压力的变化,发现GAP在2个竞争反应分解生成HCN和NH3的过程,不但受实验温度的影响,而且也受压力的影响。The processes of fast pyrolysis and low heating rate decomposition for GAP were studied by T-Jump/FTIR and in-situ pyrolysis-FTIR respectively.In T-Jump/FTIR technique,GAP was flash-pyrolyzed with heating rate of 1 000 ℃/s at the set temperature（600 ℃ and 1 000 ℃）and under different pressure N2 atmosphere.With the help of rapid scanning Fourier transform infrared（FTIR） spectroscopy,the kind and concentration of the gas products were analyzt and measured.The results show that the azido-group of GAP is decomposed first to form an intermediate,imine,which continue to decompose into HCN and NH3 during two competing processes.On the basis of changes of HCN/NH3 ratios with temperature and pressure in the gas products from fast thermolysis of the GAP,it is found that the formations of HCN and NH3 in two competing processes are affected by experiment temperature and environmental pressure.

关 键 词：物理化学 GAP 快速热分解 原位红外 分解机理 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]