Preparation, Characterization, Thermal Evaluation and Sensitivities of TKX-50/GO Composite

Wang, Junfeng; Chen, Shusen; Yao, Qiang; Jin, Shaohua; Zhao, Siwei; Yu, Zhenfei; Li, Jin-xin; Shu, Qinghai

doi:10.1002/prep.201700080

Cited by 30 publications

(15 citation statements)

References 43 publications

(35 reference statements)

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“…8(i), the TG curves of TKX‐50, TKX‐50/NiFe 2 O 4 , and TKX‐50/NiCo 2 O 4 (when the addition amount of NiFe 2 O 4 and NiCo 2 O 4 was 10% and with a heating rate of 5.0 K min −1 ) were obtained. The TG curves of TKX‐50, TKX‐50/NiFe 2 O 4 , and TKX‐50/NiCo 2 O 4 composites show two‐step weightlessness, 40‐43 which is consistent with the DSC results. The results of TKX‐50 TG analysis are shown in Fig.…”

Section: Resultssupporting

confidence: 85%

Synthesis, characterization, and catalytic behaviour of nano‐bimetallic nickel oxide on the thermal decomposition of dihydroxylammonium‐5,5′‐bistetrazole‐1,1′‐diolate

Zhao

et al. 2022

J of Chemical Tech & Biotech

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Synthesis, characterization, and catalytic behaviour of nano-bimetallic nickel oxide on the thermal decomposition of dihydroxylammonium-5,5 0 -bistetrazole-1,1 0 -diolate)Bimetal combustion catalyst has become an emerging field in recent years, which is still in its infancy. When the combustion catalyst is used in double-base propellants, it can produce effects that conventional catalysts cannot achieve. In this study, nano-bimetallic nickel oxides (nanospheres of NiFe 2 O 4 and the sub-nanometre flower NiCo 2 O 4 ) were prepared by hydrothermal method and characterized using X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and N2 adsorption-desorption test (BET). Moreover, its thermal catalytic action on dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) was studied. The thermal analysis of composite TKX-50/NiFe 2 O 4 and TKX-50/NiCo 2 O 4 was carried out by thermogravimetric differential scanning calorimetry (TG-DSC). The results show that when the addition amount of NiFe2O4 is 10%, the heating rate is 5.0 K min −1 , the NiFe 2 O 4 has the best catalytic activity for TKX-50 thermal decomposition, and the high thermal decomposition peak temperature (Tpeak1) is decreased by 29 °C. More interestingly, the apparent activation energies of the two composites were calculated by Kissinger, Ozawa, and Starink methods. The advanced thermal analysis kinetics software (AKTS) was used to perform kinetic calculations on the DSC experimental curves of the abovementioned composite energetic materials, and reaction rate curves obtained by the simulation are in good agreement with the experimental curves of the thermal decomposition reaction process, further proving that the accuracy of the experiment is high. Therefore, the addition of NiFe 2 O 4 shows high catalytic efficiency on the thermal decomposition of TKX-50 components, and this would be beneficial to promote the burning rate of propellants containing TKX-50 components.

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Section: Resultssupporting

confidence: 85%

Synthesis, characterization, and catalytic behaviour of nano‐bimetallic nickel oxide on the thermal decomposition of dihydroxylammonium‐5,5′‐bistetrazole‐1,1′‐diolate

Zhao

et al. 2022

J of Chemical Tech & Biotech

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“…For example, Xiong et al [20] simulated the morphologies of TKX-50 crystals formed in the presences of different additives by the molecular dynamics simulation, and found that ethanol, ethylene glycol, and acetic acid could significantly reduce the crystal aspect ratio, exerting positive impacts on the sphericization of TKX-50. Wang et al [21] prepared a TKX-50/graphene oxide (GO) composite with a near-spherical crystal morphology by the anti-solvent method using GO as a modifier. Ren et al [22] simulated the crystallization behavior of TKX-50 with its growth morphology and found that the morphology controlling agents with negative charges could narrow the differences among the growth rates of major crystal planes, resulting in crystals with lower aspect ratios .…”

Section: Introductionmentioning

confidence: 99%

Effect of Sodium Alginate on the Morphology and Properties of High Energy Insensitive Explosive TKX‐50

Dong

Chen

Jin

et al. 2019

Propellants Explo Pyrotec

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Dihydroxylammonium 5,5′‐bistetrazole‐1,1′‐diolate (TKX‐50) is an energetic ion salt with high energy and low mechanical sensitivity. However, its poor morphology and low binding ability with conventional binders have significantly limited its application. In the present work, we reported a novel strategy to improve the morphology and surface properties of TKX‐50 using sodium alginate (SA) as the modifier by the anti‐solvent method. The results of imaging characterization indicated that SA greatly affected both crystal habit and morphology of TKX‐50, resulting in modified TKX‐50 granulars with low aspect ratios. The formation mechanism was explored by the molecular dynamics simulation. The XPS and SEM characterizations also revealed that SA adhered onto TKX‐50 surface to form a coating layer. The non‐isothermal kinetic parameters were calculated from DSC results. Our work has provided a new strategy to improve the morphology and surface properties of TKX‐50 for its practical applications.

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“…Among them, molecular and crystal structures, including chemical composition, crystal packing, crystal morphology, size, shape, purity, and defects, are strongly related to the intrinsic qualities of the materials. Until now, various strategies, such as recrystallization, energetic co-crystals, adding and coating of the inert materials including with organic wax [7], high polymers [8], stearic acid [9], and carbon materials (CMs) [10,11,12,13,14,15,16,17,18,19,20,21,22], have been proposed to reduce the sensitivity and improve the performance of EMs.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al and Liu et al separately confirmed that GO sheets not only notably reduced the sensitivity, but also enhanced the thermal stability of HMX [12,13]. By solvent–anti-solvent method, Wang et al demonstrated that GO sheets were well coated on the surface of TKX-50 crystal (dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate, a new azole-based high-performance and low-sensitivity high explosive crystal) and formed TKX-50–GO composite with reduced sensitivity, but with no obvious effect on the thermal stability [14].…”

Section: Introductionmentioning

confidence: 99%

Interaction Mechanisms of Insensitive Explosive FOX-7 and Graphene Oxides from Ab Initio Calculations

Sun

Zhao

2019

Nanomaterials

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Energetic material–graphene oxide (EM–GO) composites exhibit excellent thermal stability and insensitivity to mechanical stimuli. The interfacial interactions play an important role in affecting the structural and electrical properties of EM–GO composites. FOX-7 crystal with a wave-shaped layer structure is an ideal prototype system for matching with oxygen-rich GO monolayers to form FOX-7–GO composites. Here, we conducted a systematic investigation on FOX-7–GO composites by dispersion-corrected density functional approach. Our results revealed that there exists relatively strong interaction in the FOX-7–GO interface, which stems from the synergistic effect of interfacial charge transfer and hydrogen bonds. The electronic structure analyses demonstrated that GO can hybridize with FOX-7 to reduce charge accumulation on the FOX-7 surface. These theoretical results are useful for clarifying the interfacial effects on the sensitivity of FOX-7–GO composites.

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Preparation, Characterization, Thermal Evaluation and Sensitivities of TKX-50/GO Composite

Cited by 30 publications

References 43 publications

Synthesis, characterization, and catalytic behaviour of nano‐bimetallic nickel oxide on the thermal decomposition of dihydroxylammonium‐5,5′‐bistetrazole‐1,1′‐diolate

Synthesis, characterization, and catalytic behaviour of nano‐bimetallic nickel oxide on the thermal decomposition of dihydroxylammonium‐5,5′‐bistetrazole‐1,1′‐diolate

Effect of Sodium Alginate on the Morphology and Properties of High Energy Insensitive Explosive TKX‐50

Interaction Mechanisms of Insensitive Explosive FOX-7 and Graphene Oxides from Ab Initio Calculations

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