Adjustable Self-Assembly of Perchlorate with Nitrogen-Rich Bicyclic Compounds: High-Energy Component Enhances Combustion of Composite Solid Propellants

Developing
energetic compounds with high energy and low sensitivity
is a key focus for the progression of civil and military industries.
Driven by crystal engineering, the solvent-mediated adjustable self-assembly
strategy of perchlorate with nitrogen-rich bicyclic energetic compounds
was successfully explored, and three kinds of oxidant-dropped self-assembly
energetic compounds (ATOADP·H2O, ATOADP, and ATOAP) were prepared under the guidance of electrostatic potential. Among
them, ATOADP has a high density (1.988 g cm–3) and good thermal stability (280.6 °C), and its detonation
performance (D = 8986 m s–1, P = 38.1 GPa) far exceeds that of RDX (D = 8795 m s–1, P = 34.9 GPa).
Crystals with acceptable sensitivity (IS = 7 J, FS = 120 N) were obtained
in a MeOH/EA system, and the combustion flame was stable and bright.
Moreover, ATOADP is an excellent candidate to replace
RDX in composite solid propellants, and the burning rate of 5% and
10% substituted propellant samples increased by 26.0% and 21.1%, respectively.
The excellent performances of these di perchlorate compounds suggest
that self-assembly strategy is a convenient and promising method for
guiding the synthesis of energetic compounds.