Frictional properties of single crystals HMX, RDX and PETN explosives

Multi-aspect and comprehensive atomic insight: the whole process of thermolysis of HMX/Poly-NIMMO-based plastic bonded explosive

Based on the reactive molecular dynamics, the whole process of thermolysis of HMX/Poly-NIMMO-based PBX was studied in detail at the micro scale, which provided a novel atomic insight into the thermolysis mechanism of HMX/Poly-NIMMO. Further, it was compared with the HMX single substance system to explore the influence of binder on thermolysis of HMX. According to the findings, the activation energy required by pyrolysis of HMX in the mixed system is much less than that required by the pure HMX system at both phases. From the point of view of reaction energy, poly-NIMMO promoted the thermolysis of HMX. Especially, the mechanism analysis confirmed this point. The nitro and hydroxyl groups detached from Poly-NIMMO will react with HMX, and the generated HNO2 will further accelerate the decomposition process of nitrogen heterocycles. In addition, the number of the final products H2O and H2 in the two-component system increased greatly, but the number of CO2 and N2 molecules had not changed much, and C clusters were formed in the system. The evolution trend of bond number further verified the above analysis. While the maximum cluster number does drop with increasing temperature at first, after a particular temperature threshold is reached, it remains unchanged. In a nutshell, poly-NIMMO will hasten HMX's thermolysis and reduce the system's stability when subjected to heat.

Nitrogen-rich 4,4′-azo bis(1,2,4-triazolone) salts—the synthesis and promising properties of a new family of high-density insensitive materials

4,4′-Azo-bis(1,2,4-triazolone) (ZTO) based salts from alkaline (Li⁺, K⁺, Na⁺, and Cs⁺), alkaline earth metal salts (Mg²⁺, Ca²⁺, Sr²⁺, and Ba²⁺) and hydrazinium salt were synthesized in a simple, straightforward manner and were characterized by IR and NMR spectroscopy, elemental analysis.

Studies on the synthesis and properties of polynitro compounds based on esteryl backbones

Four polynitro esters were derived from 2,2,2-trinitroethanol with multi-nitrobenzoic acids by transesterification.

N-Trinitroethyl-substituted azoxyfurazan: high detonation performance energetic materials

An N-nitrated trinitroethylamino azoxyfurazan derivative reported here possesses oxygen balance of near zero (+2.5%) and exhibits outstanding properties (Δ_fH_m, 962.1 kJ mol⁻¹; D, 9458 m s⁻¹; P, 41.2 GPa).

Intermolecular interaction influenced energy and sensitivity of highly energetic salts: structure and physicochemical properties

Based on supramolecular interactions, three stable energetic compounds (TATA⁺)·(TZA⁻)·H₂O, (AT⁺)₂·(OX²⁻) and (DAT²⁺)·(NO₃⁻)₂ were synthesized and structurally characterized and their physicochemical properties theoretically and experimentally studied.