溶剂及温度对ε-HNIW晶型及热安定性的影响  

The Influences of Solvents and Temperature on Polymorphs and Thermal Stability of ε-HNIW

作　　者：刘进全[1] 欧育湘[1] 金韶华[1] 陈博仁[1] 

机构地区：[1]北京理工大学材料科学与工程学院,北京100081

出　　处：《火炸药学报》2005年第2期56-59,共4页Chinese Journal of Explosives & Propellants

基　　金：国防科工委预研基金资助项目(12060451867)

摘　　要：将ε-HNIW分别在水、甲苯、正庚烷、环己烷4种溶剂中于70℃下加热4h后进行傅立叶变换红外光谱(FTIR)测定及差热分析(DTA)。FTIR图谱表明,加热后的ε-HNIW谱图与未经加热的一致,即加热后的HNIW仍为ε型。DTA曲线显示,在2,5,10及20℃/min的升温速率下,加热4h后ε-HNIW的分解峰温与未加热的峰温的改变量ΔTP分别为0～2.6℃、0～2.6℃、1～1.9℃及0～2.5℃。用Kissinger法和Ozawa法对热分解曲线进行热分解唯象动力学处理,求得4种加热后试样的分解表观活化能,且两种方法计算出的结果误差在2%以内。可以认为,ε-HNIW在上述溶剂中于70℃下加热4h后,热安定性没有改变。Polymorphs and thermal stability of hexanitrohexaazaisowurtzitane (HNIW) have attracted much attention of many researchers.ε-HNIW was heated at 70℃ for 4hours in four solvents (water, toluene, heptane and cyclohexane) respectively. The FTIR spectra and DTA curves of the four heated samples were recorded, and compared with the unheated sample. FTIR spectra indicate that the polymorphs of all heated ε-HNIW remain unchanged .DTA curves show that the differences of thermal decomposition peak temperature between the unheated sample and the four heated samples are 0～2.6℃, 0～2.6℃,1～1.9℃, and 0～2.5℃ at four heating rates of 2, 5,10 and 20℃/min respectively. In addition,the observed activation energy of the four heated samples has been obtained using both Kissinger method and Ozawa method . The error between the calculated results from these two methods rings ca 2%.It could be concluded that the thermal stability of the four heated samples exhibits no appreciable changes.

关 键 词：分析化学 六硝基六氮杂异伍兹烷 热分解 安定性 

分 类 号：O643[理学—物理化学]