High Speed Imaging of TATB- and HMX-Based Energetic Material Decomposition in Molten Salts

Abstract

Hochgeschwindigkeitsbildanalyse der Zersetzu È ng von auf TATB und HMX basierenden energetischen Materialien in geschmolzenen SalzenUntersucht wird die Einbringung energetischer Materialien in Hochtemperaturba Èder geschmolzener Salze als eine Methode zu ihrer sicheren Vernichtung. In diesen Ba Èdern zersetzt sich das Material. In der vorgestellten Forschungsarbeit wird das Verhalten der Sprengstoffe LX-17 (92,5 Gew.% 1,3,5-Triamino-2,4,6-trinitrobenzol (TATB), 7,5 Gew.% Kel-F Kunststoffbinder) und 3,5,3,5, SummaryImmersion of energetic materials into high-temperature molten-salt baths, where the energetic materials decompose, is being considered as a method for their safe destruction. In the present research, behaviors of the high explosives LX-17 (92.5 wt% 1,3,5-triamino-2,4,6-trinitrobenzene (TATB), 7.5 wt% KeI-F 800 plastic binder) and 3,5,3,5,, 15 wt% Viton A plastic hbinder) were studied when these materials were immersed into molten salt baths. Pressed cylindrical samples initially 6.35 mm in diameter and length were immersed in molten salt baths, and data were taken photographically. Sample decomposition behaviors were observed for varied salt temperatures in a molten LiClNaCl-KC1 eutectic and then separately in a molten Li 2 CO 3 -Na 2 CO 3 -K 2 CO 3 eutectic. Bath temperatures ranged from 650 to 750 C. General combustion behaviors such as bubble formation characteristics, gas evolution, and sample lifetimes were observed. Results indicated that sample lifetimes decreased as bath temperatures increased, and that the carbonate eutectic increased initial decomposition rates and decreased sample lifetimes relative to the chloride eutectic.

New Insights into the Stability of Anhydrous 2H-Imidazolium Fluoride and its High Dissolution Capability toward a Strongly Hydrogen-Bonded Compound

“…Compounds with strong hydrogen-bonded networks, such as 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) and cellulose, have been widely used as energetic materials − or as biorenewable materials , and hydrogen-bonded organic frameworks (HOFs). − Because of their low solubility in water and many common organic solvents, the dissolution, purification, and recycling of these compounds are extremely challenging, resulting in environmental issues and considerable financial loss. Encouragingly, ionic liquids (ILs) have been viewed as promising media to dissolve compounds with strong hydrogen-bonded networks because of the strong proton-accepting and -donating abilities of the ILs. − However, one notable practical limitation of using ILs is that they are very likely contaminated by water, especially in humid environments.…”

Thermal characterization and kinetic analysis of nano‐ and micro‐Al/NiO thermites: Combined experimental and molecular dynamics simulation study

“…[35] Among several types of reactive nanocomposites, nano-thermite energetic materials composed of metal fuel nanoparticles (NPs) and metal oxide in the nano and micro scale are one of the most attractive energetic materials. [3,36] Because of the intimate mixture of the reactants at the nano scale, the heat and mass transfer distances are drastically reduced, leading to significantly improved kinetics and much higher energy-releasing properties, [37,38] including high combustion rates and self-propagation in the micro scale. Similar to the bulk state, aluminum NPs are known to be one of the best nano-energetic metal choices due to the relatively high formation heat of Al 2 O 3 .…”