Abstract
To search green,low-toxicity lead-free primary explosive,a new tetrazole derivative ligand 1H-5-acylhydrazide tetrazole(TZCA)and its complex Ni (TZCA)2(ClO4)2(ECCs-1)were synthesized by hydrazinolysis and coordination reactions using ethyl 1H-tetrazole-5-carboxylate as the raw material. The molecular structure and thermal decomposition properties of the title complex were tested by X-ray single crystal diffraction,IR diffraction,NMR,elemental analysis,thermogravimetric and simultaneous thermal analyzers. The heat of combustion of ECCs-1 was tested by oxygen bomb calorimetry and its energy parameters were predicted based on Hess law and K-J equation. Sensitivities of ECCs-1 were tested by BAM test methods. The results show that the density of TZCA is 1.83 g·cm-3,monoclinic crystal system,C2/c space group,the stacking mode is V-staggered stacking. The density of ECCs-1 powder is 1.90 g·cm-3,impact sensitivity is 17 J,friction sensitivity is 72 N,thermal decomposition temperature is 336 ℃,activation energy of the thermal decomposition reaction is 183.3 kJ·mol-1,thermal explosion critical temperature is 309.8 ℃,activation entropy is 46.745 J·K-1·mol-1,and the activation enthalpy is 178.563 kJ·mol-1. The hot baking and lead plate tests both show that ECCs-1 has a good detonation performance.
Translated title of the contribution | Synthesis and properties of novel high nitrogen energetic complex of nickel perchlorate with tetrazole⁃5⁃formylhydrazine |
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Original language | Chinese (Traditional) |
Pages (from-to) | 531-538 |
Number of pages | 8 |
Journal | Hanneng Cailiao/Chinese Journal of Energetic Materials |
Volume | 31 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2023 |