Possibilities of applying the piloyan method of determination of decomposition activation energies in the differential thermal analysis of polynitroaromatic compounds and their derivatives

Abstract

The Piloyan activation energiesE of decomposition and the initial temperaturesTD of the exotherms of hexanitrobiphenyl (HNB), nonanitro-m-terphenyl (NONA), tripicryl-s-triazine (TPT) and 1,4,5,8-tetranitronaphthalene (TENN) have been determined by means of non-isothermal DTA. Due to its volatility in the zone of the beginning of thermal decomposition onlyTD values are specified fors-trinitrobenzene (TNB). From the values ofE ·TD−1 for HNB and from the derived values ofE ·TD−1 for TNB on the one hand, and from the published values of the Arrhenius parameters obtained by means of the manometric method on the other, relationships have been derived. The relationship betweenE ·TD−1and the standard activation enthropy is considered relevant.