Aluminized nitramine-based nanocomposites: Manufacturing technique and structure study

Жигач, А. Н.; Лейпунский, И. О.; Berezkina, N. G.; Зотова, Е.С.; Kudrov, B.V.; Gogulya, M. F.; Brazhnikov, M. A.; Кусков, М. Л.

doi:10.1007/s10573-009-0083-8

Cited by 12 publications

(5 citation statements)

References 5 publications

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“…The addition of metal powder with high heat value to explosive composition is a known method to improve their efficiency. And in particular, it also plays an important role in enhancing their blast effect and underwater performances [1][2][3], due to the reaction with the decomposition products of the explosive and environmental components [4]. Aluminized explosives, as a kind of metal-containing explosives in mixed explosives, have been widely used in various applications owing to its high density, explosion heat, and explosive capacity [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of RDX/Aluminum Composites by Spray-Drying Method

Sun

et al. 2020

Journal of Nanomaterials

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RDX/aluminum composites were prepared by the spray-drying method with F2602 as a binder. The morphology and covering effect of composites were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The effect of the processing parameters on the morphology of the samples was investigated. The impact sensitivity and thermal decomposition behavior of RDX/aluminum composites were also measured and analyzed. Optimal morphology of samples was achieved when the inlet temperature, nitrogen flow rate, and suspension feed flow rates were 80°C, 473 L·h-1, and 4.5 mL·min-1, respectively. In addition, RDX/aluminum composites with the same content were prepared by a coverage-mixing method for comparative analysis. Experimental results showed that the thermal sensitivity and the impact sensitivity of RDX/aluminum composites prepared by the spray-drying method were significantly lower than those of RDX/aluminum composites prepared by the coverage-mixing method.

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Section: Introductionmentioning

confidence: 99%

Preparation and Properties of RDX/Aluminum Composites by Spray-Drying Method

Sun

et al. 2020

Journal of Nanomaterials

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“…Nonetheless, CL-20's sensitivity is relatively elevated, thus posing a potential safety hazard when directly applied to propellants [2]. To mitigate this concern, researchers worldwide frequently employ polymers to coat CL-20 with the aim of reducing its sensitivity [3][4][5]. Among these efforts, Luo et al [6] synthesized polyurethane-based copolymers for this purpose and observed a significant reduction in CL-20's impact sensitivity post-coating.…”

Section: Introductionmentioning

confidence: 99%

Research on the Control and Performance of Integrated Self-Assembled Micro-Scale Structure of NC-Coated CL-20

Wang,

Hao,

et al. 2024

Processes

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A novel self-assembly approach was employed to produce micro-spherical composite energetic material (EM) comprising 2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane/nitrocellulose (CL-20/NC) via the spray-drying method, with precise control over parameters such as droplet diameter, ambient temperature, and nozzle injection rate. In this method, NC was utilized as a coating for CL-20 to imbue it with distinct spatial characteristics, thereby mitigating its high sensitivity. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses were conducted to investigate the morphology of the CL-20/NC micro-spheres. Additionally, differential scanning calorimetry (DSC) was employed to study the thermal decomposition kinetics of both CL-20 and CL-20/NC. XRD findings revealed that the crystal structure of CL-20/NC micro-spheres prepared using acetone as the solvent remained unchanged, albeit with noticeable attenuation in diffraction peaks. DSC analysis indicated an increase of 4.87 K and 7.64 K in the thermal explosion critical temperature (Tb) and peak temperature (Te) of CL-20, respectively. Furthermore, the apparent activation energy was enhanced by 18.65 kJ·mol−1, signifying improved thermal stability. SEM analysis confirmed that the micro-spheres’ size ranged from 0.5 μm to 5 μm, displaying a regular spherical shape. Notably, the impact sensitivity (H50) of CL-20/NC tripled compared to raw CL-20.

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“…Yang Guangcheng [5] and others prepared TATB-BTF core-shell composite particles by spray drying process. Zhigach a.n et al [6] used the spray drying method to mix Al powder with RDX, HMX and CL-20 respectively, and prepared particles with a particle size of about 1 μm. Lyu Jie Yao [7] prepared Al@AP and Al@AP /CuO coreshell structure composites by spray method.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of spherical super thermite for 3D printing of energetic materials

Zhang

Xia

et al. 2023

J. Phys.: Conf. Ser.

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3D printing technology is a new rapid prototyping technology that has attracted much attention since its inception. It is promising to apply 3D printing technology to energetic materials. However, the 3D printing of energetic materials requires high raw materials, and there is no suitable thermite powder as the printing raw materials at present. In this paper, Al@CuO energetic composites with single core spherical core-shell structure were prepared by spray drying method. The prepared powder was confirmed to have a single core spherical core-shell structure by SEM/EDS/XRD, and it was proved to have good fluidity by the fluidity test. High-speed photographic ignition tests show that the Al@CuO Micron spheres have excellent energy release performance and can be used as burning rate catalysts. In addition, this method has the advantages of simple operation, good process performance, mass preparation, and can be applied to the thermite system of most metal oxides (such as Bi2O3, Fe2O3).

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Aluminized nitramine-based nanocomposites: Manufacturing technique and structure study

Cited by 12 publications

References 5 publications

Preparation and Properties of RDX/Aluminum Composites by Spray-Drying Method

Preparation and Properties of RDX/Aluminum Composites by Spray-Drying Method

Research on the Control and Performance of Integrated Self-Assembled Micro-Scale Structure of NC-Coated CL-20

Preparation and properties of spherical super thermite for 3D printing of energetic materials

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