Comparison of heat capacity of solid explosives by DSC and group contribution methods

Abstract

The isobaric heat capacities of solid explosive materials were measured using differential scanning calorimeter. The values of C-p were determined at temperature 298.15 K and compared to theoretical data calculated using the group additivity approach. Several group contribution methods were tested, showing that certain method for some explosives provides estimation of C-p with error only 1 %. Generally, the average error limit for calculated C-p was about 11 %, which is insufficient.