A STUDY ON THE THERMAL STABILITY OF ENERGETIC MATERIALS BY DSC AND ARC

摘要

In order to investigate the thermal stability of energetic materials, DSC (Differential Scanning Calorimetry) and ARC (Accelerated Rate Calorimetry) measurements have been conducted for various kinds of energetic materials such as nitrobenzenes, organic peroxides, azo compounds and oximes in addition to semi-empirical molecular orbital calculations. Thermal decomposition temperatures measured by ARC correlate well with those by DSC, which suggests that decomposition temperatures by ARC could be estimated by DSC. Bond dissociation energy can be estimated by MO calculations, and the weakest bond dissociation energy in the molecule approximately correlates with the on-set temperature measured by DSC or ARC, which can be the index of thermal stability. The weakest bond dissociation energy also serves to determine which bond in a molecule will dissociate in the pyrolysis of energetic materials.