Research on the Control and Performance of Integrated Self-Assembled Micro-Scale Structure of NC-Coated CL-20 DOI Open Access
Haoran Wang,

Yibo Hao,

Sidong Lei

et al.

Processes, Journal Year: 2024, Volume and Issue: 12(4), P. 675 - 675

Published: March 27, 2024

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 NC utilized a coating for CL-20 imbue it distinct spatial characteristics, thereby mitigating its high sensitivity. Scanning electron microscopy (SEM) X-ray diffraction (XRD) analyses were conducted investigate morphology of CL-20/NC micro-spheres. Additionally, differential scanning calorimetry (DSC) study thermal decomposition kinetics both CL-20/NC. XRD findings revealed that crystal structure micro-spheres prepared using acetone solvent remained unchanged, albeit noticeable attenuation in peaks. DSC analysis indicated an increase 4.87 K 7.64 explosion critical temperature (Tb) peak (Te) CL-20, respectively. Furthermore, apparent activation energy enhanced by 18.65 kJ·mol−1, signifying improved stability. SEM confirmed micro-spheres’ size ranged from 0.5 μm 5 μm, displaying regular spherical shape. Notably, impact sensitivity (H50) tripled compared raw CL-20.

Language: Английский

Kinetic modeling of CL-20 decomposition by a chemical reaction neural network DOI Open Access
He Wang, Yabei Xu, Mingjie Wen

et al.

Journal of Analytical and Applied Pyrolysis, Journal Year: 2023, Volume and Issue: 169, P. 105860 - 105860

Published: Jan. 1, 2023

Language: Английский

Citations

18
A review on the preparation and characterization methods of spherical explosive crystals DOI Creative Commons
Dongjie Liao, Minjie Li, Jiechao Wang

et al.

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 27, P. 3098 - 3118

Published: Oct. 19, 2023

Spherical explosive crystals refer to explosives with a spherical morphology. Compared polyhedral crystals, do not have sharp edges or corners, and lower probability of generating hot spots due the corners when subjected friction impact. Therefore, mechanical sensitivity better safety. Moreover, morphology can endow more excellent thermal properties, charging performance, energy output, properties. Due significant improvement comprehensive performance through crystal spheroidization, research on spheroidization has received high attention from countries around world. However, there are currently few review articles study crystals. In order help people carry out this article summarizes current methods for preparing characterizing based systematic investigation mechanism moreover analyzes process characteristics effects. Finally, challenges in development is prospected, hoping provide positive references preparation application

Language: Английский

Citations

14
A review on the preparation and properties of energetic materials for micro pyrotechnic trains DOI Creative Commons
Dongjie Liao,

Wenzhong Lou,

Hengzhen Feng

et al.

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 105179 - 105179

Published: May 1, 2025

Language: Английский

Citations

0
Temperature-dependent decomposition of the CL-20/MTNP cocrystal after phase separation DOI
Fang Yang, Zongwei Yang, Qian Yu

et al.

Physical Chemistry Chemical Physics, Journal Year: 2024, Volume and Issue: 26(10), P. 8547 - 8558

Published: Jan. 1, 2024

The thermal decomposition of CL-20/MTNP was identified to be a typical heterogeneous reaction with phase separation before decomposition, and the subsequent strongly temperature-dependent.

Language: Английский

Citations

0
Research on the Control and Performance of Integrated Self-Assembled Micro-Scale Structure of NC-Coated CL-20 DOI Open Access
Haoran Wang,

Yibo Hao,

Sidong Lei

et al.

Processes, Journal Year: 2024, Volume and Issue: 12(4), P. 675 - 675

Published: March 27, 2024

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 NC utilized a coating for CL-20 imbue it distinct spatial characteristics, thereby mitigating its high sensitivity. Scanning electron microscopy (SEM) X-ray diffraction (XRD) analyses were conducted investigate morphology of CL-20/NC micro-spheres. Additionally, differential scanning calorimetry (DSC) study thermal decomposition kinetics both CL-20/NC. XRD findings revealed that crystal structure micro-spheres prepared using acetone solvent remained unchanged, albeit noticeable attenuation in peaks. DSC analysis indicated an increase 4.87 K 7.64 explosion critical temperature (Tb) peak (Te) CL-20, respectively. Furthermore, apparent activation energy enhanced by 18.65 kJ·mol−1, signifying improved stability. SEM confirmed micro-spheres’ size ranged from 0.5 μm 5 μm, displaying regular spherical shape. Notably, impact sensitivity (H50) tripled compared raw CL-20.

Language: Английский

Citations

0