Thermal Decomposition Research on 1,5‐Diazabicyclo[3.1.0] Hexane (DABH) as a Potential Low‐toxic Liquid Hypergolic Propellant

Abstract

1,5-Diazabicyclo[3.1.0] hexane (DABH) was found a potential hypergolic liquid propellant. The physical and energetic properties of DABH, 2-(dimethylamino) ethyl azide (DMAZ), and monomethyl hydrazine (MMH) were compared. The ignition delay time of DABH with nitrogen tetroxide was 1 ms, which was shorter than DMAZ and similar with MMH. The toxicology experiment showed that half lethal dose (LD 50 ) of DABH was 621.0 mg kg À1 , which sug-gested that DABH was promising to be used as low-toxic liquid propellant. Thermal decomposition experiments showed that the apparent activation energy (E) was about 66.3 kJ mol À1 . The thermal decomposition calculated results from Madhusudanan-Krishnan-Ninan integration, Satava-Sestak integration and Achar differential methods were compared and the pre-exponential factor were obtained.

Combustion and Thermal Decomposition Research on 1,2‐Dicyclopropyl‐1‐Methyl Cyclopropane (DMCP) as High Energy Fuel for Liquid Rocket Propellants

“…Thermal stability determined the practicable value of propellants. The thermal decomposition test was one of the reliable means to investigate the stability and energetic value [12]. Meanwhile, Arrhenius parameters determined from decomposition progress are of value because of the description of a complex series of reactions [13][14][15].…”

Enthalpy of formation of 6-phenyl-1,5-diazabicyclo[3.1.0]hexane by combustion calorimetry and theoretical approach for efficient prediction of thermochemistry of diaziridines

“…20 Due to its high enthalpy of formation and low toxicity, DABH was found to be a promising liquid propellant as an alternative to toxic hydrazine derivatives. 21,22 The possibility of using solid PDABH as a high-energy material is yet to be explored and, therefore, the thermochemical properties of DABHs and other diaziridine derivatives are critical to the successful modeling of diaziridine-based high-energy materials. Nevertheless, to our knowledge, no experimental study of the enthalpy of formation of any diaziridine has been reported so far.…”