Preparation and thermal properties study of HNIW/FOX-7 based high energy polymer bonded explosive (PBX) with low vulnerability to thermal stimulations

Gao, Lan; Jin, Shaohua; Chen, Minglei; Li, Jing; Du, Lixiaosong; Wang, Junfeng; Chen, Kun; Li, Lijie

doi:10.1080/07370652.2019.1665146

Cited by 15 publications

(7 citation statements)

References 26 publications

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“…On the battlefield, weapons may suffer many unexpected external stimuli such as a thermal stimulus, a shock wave stimulus, and a mechanical stimulus. If the sensitivity of the loaded energetic materials is high, weapons may ignite by these external stimuli, which may bring huge hazards in the service. , Therefore, adopting insensitive energetic materials to load weapons is important for enhancing the survivability of weapons. 3-Nitro-1,2,4-triazolin-5-one (NTO, Figure ) is a highly potential insensitive high-performance explosive .…”

Section: Introductionmentioning

confidence: 99%

Measurement and Correlation of Solubilities of 3-Nitro-1,2,4-triazol-5-one (NTO) in 10 Pure Solvents and 3 Binary Solvents from 278.15 to 328.15 K

et al. 2021

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Solubilities of 3-nitro-1,2,4-triazol-5-one (NTO) were measured in 10 pure solvents (deionized water, methanol, ethanol, isopropanol, n-butanol, formic acid, ethyl acetate, acetonitrile, toluene, n-hexane) and 3 binary solvents (ethanol + water, nitric acid + water, N-methyl pyrrolidone + water) from 278.15 to 328.15 K using gravimetric methods. The measured solubility data in pure solvents were fitted by a polynomial empirical equation, the van't Hoff equation, and the modified Apelblat equation, among which the modified Apelblat equation is the best empirical model for correlating the solubility of NTO in pure solvents. The modified Apelblat equation, the CNIBS/R-K equation, and the Jouyban−Acree equation were adopted to correlate the experimental solubility data in three binary solvents. In binary solvents, all fitted results agree well with the measured solubilities of NTO. This work can provide guidance for further crystallization researches of NTO.

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Section: Introductionmentioning

confidence: 99%

Measurement and Correlation of Solubilities of 3-Nitro-1,2,4-triazol-5-one (NTO) in 10 Pure Solvents and 3 Binary Solvents from 278.15 to 328.15 K

et al. 2021

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“…According to ARC measured results, the activation energies ( E a ), pre-exponential factors ( A ) and mechanism functions ( f ( α )) of HNIW/FOX-7 based PBXs adiabatic decomposition are calculated using mechanism functions method 19 – 22 . The calculated results are summarized in Table 6 .…”

Section: Resultsmentioning

confidence: 99%

The influence of temperature environmental on performance of HNIW/FOX-7 based PBXs

Zhou

Chen

Chao

et al. 2022

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During application, energetic materials may suffer different temperature environmental stimulation. In order to study the influence of temperature environmental on performance of HNIW/FOX-7 based PBXs, HNIW/FOX-7 based PBX modeling powders and PBX columns were treated by LT (low temperature), HT (high temperature), HLC (high-low temperature cycle) and HLS (high-low temperature shock). Then scanning electron microscope (SEM), infrared spectra (IR), X-ray diffraction (XRD) and differential scanning calorimetry (DSC) were used to study the variation of PBX modeling powders after LT, HT, HLC and HLS treatments; in addition, the mass, size and mechanical properties of PBX columns were characterized after different temperature adaptability treatments as well. The results indicate that the change ratios of mass and size of HNIW/FOX-7 based PBX columns are less than 1%, illustrating that mass and size of PBX columns are at acceptable level after different temperature adaptability treatments. The unevenness degree of the surface of PBX modeling powders followed the order of HLC > HT > LT > HLS, which agrees well with mass loss order. Moreover, IR and XRD results indicated that the molecular structure and crystal form of HNIW and FOX-7 did not change after different temperature adaptability treatments. Additionally, thermal stabilities of PBX modeling powders are decreased after different temperature adaptability treatments, among which HLS has the largest influence on HNIW/FOX-based PBX modeling powders. The compression strengths and elastic moduli of HNIW/FOX-based PBX columns are enhanced after different temperature adaptability treatments, among which the strength of PBX columns after HLC has the maximum increase, indicating that HLC has more significant effect on mechanical property.

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“…Adiabatic Thermal Decomposition of PETN@TA, PETN@PDA, and PETN@MF Microcapsules. During application, energetic materials may suffer adiabatic situations, 1,35 which can accelerate the thermal decomposition. In order to study the influence of TA, PDA, and MF shells on adiabatic stability of PETN, ARC is used to measure the adiabatic thermal decomposition properties of pure PETN, PETN@TA, PETN@PDA, and PETN@MF.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Modern weapons expect to load high-energy density explosives to destroy the military equipment with great defense capabilities. On the other hand, in order to enhance the safety of modern weapons, low-sensitivity energetic materials are expected . Unfortunately, energy and sensitivity are often conflicting with each other. , Energetic materials with a high energy density usually have high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, in order to enhance the safety of modern weapons, low-sensitivity energetic materials are expected . Unfortunately, energy and sensitivity are often conflicting with each other. , Energetic materials with a high energy density usually have high sensitivity. Therefore, it is important to design and prepare new energetic materials with a high energy and low sensitivity or reduce the sensitivity of the existing high-energy energetic materials.…”

Section: Introductionmentioning

confidence: 99%

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Establishing the Interface Layer on the Pentaerythritol Tetranitrate Surface via In Situ Reaction

et al. 2022

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Pentaerythritol tetranitrate (PETN) was coated by tannic acid (TA), polydopamine (PDA), and melamine-formaldehyde (MF) resins via in situ reaction to prepare PETN@TA, PETN@PDA, and PETN@MF microcapsules for reducing sensitivity and enhancing thermal stability of PETN. The coating effects of TA, PDA, and MF shells on PETN surfaces are characterized by scanning electron microscopy and atomic force microscopy. The structures of PETN@TA, PETN@PDA, and PETN@MF microcapsules are characterized by X-ray photoelectron spectroscopy, X-ray diffraction, and Fourier-transform infrared spectra. The performances of PETN@TA, PETN@PDA, and PETN@MF microcapsules are characterized by differential scanning calorimetry, accelerating rate calorimetry, explosion point, vacuum deflation volume, and mechanical sensitivity. The study results show that TA, PDA, and MF shells can coat the PETN surface well. Compared with pure PETN, the explosion point has an increase while the vacuum deflation volume and mechanical sensitivity have a decrease for PETN@TA, PETN@PDA, and PETN@MF microcapsules, illustrating that the safeties of PETN@TA, PETN@PDA, and PETN@MF microcapsules are enhanced. In addition, the initial decomposition temperature (T 0 ) and peak decomposition temperature (T p ) of PETN@TA, PETN@PDA, and PETN@ MF microcapsules have a slight increase, demonstrating that the thermal stabilities of PETN@TA, PETN@PDA, and PETN@MF microcapsules are better than that of pure PETN. The obtained method can provide some guidance for the desensitizing of other energetic materials with high sensitivities.

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Preparation and thermal properties study of HNIW/FOX-7 based high energy polymer bonded explosive (PBX) with low vulnerability to thermal stimulations

Cited by 15 publications

References 26 publications

Measurement and Correlation of Solubilities of 3-Nitro-1,2,4-triazol-5-one (NTO) in 10 Pure Solvents and 3 Binary Solvents from 278.15 to 328.15 K

Measurement and Correlation of Solubilities of 3-Nitro-1,2,4-triazol-5-one (NTO) in 10 Pure Solvents and 3 Binary Solvents from 278.15 to 328.15 K

The influence of temperature environmental on performance of HNIW/FOX-7 based PBXs

Establishing the Interface Layer on the Pentaerythritol Tetranitrate Surface via In Situ Reaction

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