Construction of p -nitropyrazole-1,3,4-triazole framework energetic compounds: towards a series of high-performance heat-resistant explosives
The energy and safety of energetic materials are often contradictory, so it is challenging to reach a good balance between high energy performance and molecular stability. In this study, a series of energetic materials based on the p -nitropyrazole-1,3,4-triazole framework were synthesized. Among al...
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Veröffentlicht in: | Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2023-06, Vol.11 (23), p.12043-12051 |
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Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
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Zusammenfassung: | The energy and safety of energetic materials are often contradictory, so it is challenging to reach a good balance between high energy performance and molecular stability. In this study, a series of energetic materials based on the
p
-nitropyrazole-1,3,4-triazole framework were synthesized. Among all the new compounds, DPTO, DPPT, DPBT and PBPT exhibited excellent onset thermal stabilities with
T
d
values of over 300 °C, while they own superior detonation velocity exceeding 8700 m s
−1
(approaching that of RDX), and acceptable impact and friction sensitivities (IS ≥ 35 J, FS ≥ 288 N). It is worth mentioning that DPTO (
T
d
: 302 °C,
D
: 9103 m s
−1
, IS: 35 J) exhibited a striking thermal decomposition temperature comparable to that of the HNS explosive (
T
d
: 318 °C,
D
: 7000 m s
−1
, IS: 8.5 J), high detonation velocity approaching traditional high-energy compound HMX (
T
d
: 279 °C,
D
: 9144 m s
−1
, IS: 6.3 J), and desirable sensitivity (IS = 35 J, FS = 288 N), which are rarely reported in the field of heat-resistant explosives. The remarkable overall performance of DPTO, DPPT, DPBT and PBPT strongly suggests them to be suitable candidates for high-performance heat-resistant explosives. |
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ISSN: | 2050-7488 2050-7496 |
DOI: | 10.1039/D3TA01811C |