Thermal Behaviour of HMX/RDX Mixtures

Abstract

Thermal behaviour of HMS/RDX mixtures is studied by differential thermal analysis (DTA) and thermogravimetric analysis (TGA). It has been found that the temperature of polymorphic transformation of HMX shows an increase due to the presence of RDX. The enthalpies of the enothermic transformations depend on the composition of the mixture, and up to 30% RDX there is a linear relationship. The formation of an eutectic with a composition of 30/70 (HMX/RDX) is postulated to explain the melting processes.

Studies on Effect of Nitrogen Rich Explosives on the Morphology, Thermal and Combustion Behaviour of B/KNO3 Composition

“…A typical DTA-TGA curve of BKP/FOX-12: 15 compositions is shown as Figure 7. RDX undergoes complete decomposition in the range 205 °C to 260 °C with peak temperature at 247 °C as reported in the literature [37]. In the present study, it is found that all the BKP/RS-RDX compositions undergo four-stage decomposition profiles where the first two stages are associated with volatiles and explosives along with PEC and behave in a similar fashion as that of formulation with FOX-7 and FOX-12.…”

Statistical Analysis of an Inter‐Laboratory Comparison of Small‐Scale Safety and Thermal Testing of RDX

“…lished previous [27][28][29][30] -t he endotherm at ca. 188 8Ci s probably aR DX/HMX eutectic and the endotherm at ca.…”

A Study of Reduced-Sensitivity RDX

“…This endotherm was not observed in SI RDX or Dyno Nobel RDX (Figure 5), unless these samples were spiked with about 10% HMX. We and others attribute the early endotherm to an RDX/HMX eutectic [4][5][6][7] although the possibility of low-temperature decomposition products cannot be (Figure 1) so that the ratio of HMX relative to RDX increases. Instead of a true increase in HMX content, a better explanation for results in Table 3 is variability in HMX content in different barrels of the reprocessed RDX returning from Eurenco.…”