Comparative thermal research on chlorodinitromethyl and fluorodinitromethyl explosophoric groups based insensitive energetic materials

Zhang, Junlin; Huo, Huan; Yu, Tao; Zhou, Jing; Wang, Zijun; Wang, Bozhou

doi:10.1016/j.fpc.2021.02.005

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…Meanwhile, the trimerizing furoxan skeleton with two nitro groups reported by Shreeve group and our group respectively [11,12] are not selected as the substrates investigated in this thermal research due to the strong space interaction between the directly connected nitro groups and the latent nitro structure of furoxans, which makes it difficult to clarify the different influence between molecular skeleton and functional groups. In the view of energy release, the energy release of BCTFO is mainly based on its energetic molecular skeleton while energy release of BFTF is based on both the energetic fluorodinitromethyl group [23][24][25][26] and energetic trimerizing furoxan skeleton. Similar with many furazan and furoxan energetic compounds [27,28], BTF, BCTFO and BFTF showed strong endothermic peaks caused by melting processes.…”

Section: Resultsmentioning

confidence: 99%

Thermal chemistry and decomposition behaviors of energetic materials with trimerizing furoxan skeleton

Zhou,

Huang,

Zhang

et al. 2024

Propellants Explo Pyrotec

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Trimerizing furoxans are ideal molecular skeletons for the construction of high energetic substances due to their compact structures and high enthalpy of formations. To explore and compare the thermal behaviors of energetic materials with tandem trimerizing furoxan molecular skeleton, we reported the first systematic research on the thermochemical behaviors and decomposition mechanism of 3,4‐bis(3‐fluorodinitromethylfuroxan‐4‐yl)furoxan (BFTF), 3,4‐bis(3‐cyanofurazan)furazan oxide (BCTFO) and benzotrifuroxan (BTF). According to the research results of the DSC‐TG experiments, both the substituted furoxan based energetic compounds (BCTFO and BFTF) exhibited low melting points and complicated thermal decomposition behaviors around 240 °C, while the melting point of unsubstituted furoxan (BTF) was much higher. Their detailed decomposition mechanisms were proposed based on the experimental results through tandem techniques including in‐situ FTIR spectroscopy method and DSC‐TG‐FTIR‐MS quadruple technology, which indicated that the cleavage of substituent would trigger the decompositions of BFTF and the decomposition of trimerizing furoxan skeletons almost synchronous occurrence with substituents in BCTFO. The self‐oxidation‐reduction of the linear and annular trimerizing furoxans lead to similar decomposition fragmented small molecule products.

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Section: Resultsmentioning

confidence: 99%

Thermal chemistry and decomposition behaviors of energetic materials with trimerizing furoxan skeleton

Zhou,

Huang,

Zhang

et al. 2024

Propellants Explo Pyrotec

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“…Compared with the energetic fluorodinitromethyl group in BFTF, the non-energetic cyano group in BCTFO is much more heat-resistance. [18][19] In the view of energy release, the energy release of BCTFO is mainly based on its energetic molecular skeleton while energy release of BFTF is based on both the energetic fluorodinitromethyl group [20][21] and energetic trimerizing furoxan skeleton. Similar with many furazan and furoxan energetic compounds [22][23] , BTF, BCTFO and BFTF showed strong endothermic peaks caused by melting processes.…”

Section: Resultsmentioning

confidence: 99%

Thermal Chemistry and Decomposition Behaviors of Energetic Materials with Trimerizing Furoxan Skeleton

Zhou,

Zhang,

Zhai

et al. 2024

Preprint

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Trimerizing furoxans are ideal molecular skeletons for the construction of high energetic substances due to their compact structures and high enthalpy of formations. Herein, we reported the first systematic research on the thermochemical behaviors and decomposition mechanism of energetic trimerizing furoxan structures of 3,4-bis(3-fluorodinitromethylfuroxan-4-yl)furoxan (BFTF), 3,4-bis(3-cyanofurazan)furazan oxide (BCTFO) and benzotrifuroxan (BTF). Both the substituted furoxan based energetic compounds (BCTFO and BFTF) exhibited low melting points and complicated thermal decomposition behaviors, while the melting point of unsubstituted furoxan (BTF) was much higher. Their detailed mechanism were proposed based on the experimental results through in-situ FTIR spectroscopy method and DSC-TG-FTIR-MS quadruple technology, which indicated that the cleavage of substituent would trigger the decompostions of BFTF and the decompostion of trimerizing furoxan skeletons almost synchronous occurrence with substituents in BCTFO. The self-oxidation-reduction of the linear and annular trimerizing furoxans lead to similar decomposition fragmented small molecule products.

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“…Molecular perovskites have been demonstrated as promising high explosives and solid propellants, which rely on the self-assembly of diverse molecular components into specified ternary crystal structures and exhibit some unique advantages like easy scale-up preparations at a low cost, increased pack efficiency (and crystal density), and optimized oxygen balance [7][8][9][10][11]. Comparative thermal research on the thermal properties and thermal behaviors are crucial to the practical applications of energetic materials [12,13].…”

Section: Introductionmentioning

confidence: 99%

Comparative Thermal Research on Energetic Molecular Perovskite Structures

Zhou

Zhang²,

Chen³

et al. 2022

Molecules

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Molecular perovskites are promising practicable energetic materials with easy access and outstanding performances. Herein, we reported the first comparative thermal research on energetic molecular perovskite structures of (C6H14N2)[NH4(ClO4)3], (C6H14N2)[Na(ClO4)3], and (C6H14ON2)[NH4(ClO4)3] through both calculation and experimental methods with different heating rates such as 2, 5, 10, and 20 °C/min. The peak temperature of thermal decompositions of (C6H14ON2)[NH4(ClO4)3] and (C6H14N2) [Na(ClO4)3] were 384 and 354 °C at the heating rate of 10 °C/min, which are lower than that of (C6H14N2)[NH4(ClO4)3] (401 °C). The choice of organic component with larger molecular volume, as well as the replacement of ammonium cation by alkali cation weakened the cubic cage skeletons; meanwhile, corresponding kinetic parameters were calculated with thermokinetics software. The synergistic catalysis thermal decomposition mechanisms of the molecular perovskites were also investigated based on condensed-phase thermolysis/Fourier-transform infrared spectroscopy method and DSC-TG-FTIR-MS quadruple technology at different temperatures.

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Comparative thermal research on chlorodinitromethyl and fluorodinitromethyl explosophoric groups based insensitive energetic materials

Cited by 9 publications

References 25 publications

Thermal chemistry and decomposition behaviors of energetic materials with trimerizing furoxan skeleton

Thermal chemistry and decomposition behaviors of energetic materials with trimerizing furoxan skeleton

Thermal Chemistry and Decomposition Behaviors of Energetic Materials with Trimerizing Furoxan Skeleton

Comparative Thermal Research on Energetic Molecular Perovskite Structures

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