黑索今与奥克托今的F-Tp曲线特征  

Characterization of the F-T pCurves of RDX and HMX by Py/GC

作　　者：梁汉东[1] 傅若农[1] 

机构地区：[1]北京理工大学化工与材料学院

出　　处：《北京理工大学学报》1997年第1期36-40,共5页Transactions of Beijing Institute of Technology

摘　　要：提出了黑索今与奥克托今的相对裂解产物丰度（Ｆ）随表观裂解温度（Ｔｐ）变化的曲线，其两者的不同点是由于这两种炸药的热物理化学过程不同而产生的。奥克托今被加热到一定温度，主要发生相对单纯的凝聚相的热化学分解，因此在Ｆ－Ｔｐ曲线上呈Ｆ值随Ｔｐ值快速和线性增长的特征；而黑索今由于挥发始终伴随着热化学分解过程，故呈现Ｆ值随Ｔｐ值慢速和非线性增长的特点，Ｆ－Ｔｐ曲线不仅能够反映物质的热化学过程，而且还能够指示其伴随的物理过程。Relative pyrolyzate abundance(F )vs. the observed pyrolysis temperature(T p)curves of TTZ, HMX,RDX and DNT are obtained by means of Py/GC, particularly with the increase in pulse/step of the pyrolysis temperature. Physicochemical mechanism of materials in the special pyrolysis processes is discussed,and the model of thermal process of a material on the coexistence of both the chemical decomposition and physical phase change is proposed theoretically and verified experimentally. TheF-T p curve of RDX is characteristically distinguished from that of HMX. During the whole pyrolysis process, while both physical vaporization or sublimation and chemical decomposition occur in RDX,only the relatively pure chemical decomposition occurs in HMX.F-T p curves based on easy and simple Py/GC can be used not only for the investigation of chemical decomposition associated with the thermal stability of mate-rials,but also for changes in its physical phase.

关 键 词：黑索今 奥克托今 热分析 裂解 硝胺炸药 

分 类 号：TQ564.42[化学工程—炸药化工]