Structural and Thermal Characteristics of a High-Nitrogen Energetic Material: G(AHDNE)

摘要

A high-nitrogen energetic salt, l-amino-1-hydrazino-2,2-dinitroethylene guanidine salt [G(AHDNE)], was synthesized by reacting of 1 -amino-1 -hydrazino-2,2-dinitroethylene (AHDNE) and guanidine hydrochloride in sodium hydroxide aqueous solution. The theoretical investigation on G(AHDNE) was carried out by B3LYP/ 6-311+G* method. The thermal behaviors of G(AHDNE) were studied with DSC and TG-DTG methods, and the result presents an intense exothermic decomposition process. The enthalpy, apparent activation energy and pre-exponential constant of the process are -1060 J g~(-1),148.7 kJ mol~(-1) and 10~(15.90) s~(-1), respectively. The critical temperature of thermal explosion of G(AHDNE) is 152.63 °C. The specific heat capacity of G(AHDNE) was studied with micro-DSC method and theoretical calculation method, and the molar heat capacity is 314.69 J mol~(-1) K~(-1) at 298.15 K. Adiabatic time-to-explosion of G(AHDNE) was calculated to be a certain value between 60-72 s. The detonation velocity and detonation pressure were also estimated. G(AHDNE) presents good performances.