Fabrication of Si@AP/NC metastable intermixed nanocomposites (MICs) by electrospray method and their thermal reactivity

Zuo, Beilin; Zhang, Jialing; Chen, Shuwen; Liang, Qiujin; Qiao, Xiaoping; Zhao, Fengqi; Liu, Peijin; Yan, Qi‐Long

doi:10.1007/s42114-019-00098-4

Cited by 21 publications

(2 citation statements)

References 31 publications

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“…[1] Nitrocellulose (NC), a typical EMs that has been widely used as a main energy ingredient and an essential role of skeleton support in single-base propellants, double-base propellants, or tri-base propellants, because of its unique features, such as excellent mechanical strength, flammability, rapid drying rate, and compatibility with several stabilizers and plasticizer. [2][3][4] In addition, the application fields of NC with different nitrogen content are also variant, for example, NC with nitrogen content of 10.7-12.3% is widely used in printing ink, varnishes, enamels, dyes, and adhesives; [5,6] while the nitrogen content larger than 12.3% is always used as the energetic materials. [7,8] On the other hand, RDX (cyclotrimethylenetrinitramine), HMX (cyclotetramethylenetetranitramine), and CL-20 (Hexanitrohexaazaisowurtzitan), as the three typical reported nitramine explosives, have exhibited promising and extensive applications in the field of propellants, explosives, and pyrotechnics because of its outstanding energy characters.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity

Chen

Liu

Cao³

et al. 2021

Nano Select

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In order to investigate the thermal decomposition kinetics and mechanism of nitrocellulose (NC) based nitramine explosives nanocomposite energetic materials, this work prepares NC/RDX (cyclotrimethylenetrinitramine), NC/HMX (cyclotetramethylenetetranitramine), and NC/CL-20 (hexanitrohexaazaisowurtzitane) composites by a combined sol-gel and the freeze-drying technology. The structure is systematically investigated and the results reveal that the explosive particles are dispersed, filled, or embedded homogenously in the gel matrix of NC, thereby restricting the crystal growth of RDX, HMX, CL-20 particles to coarse and achieving submicron/nanometer. The thermal analysis of composites exhibits much lower peak temperature compared with raw explosive crystal, furthermore, the activation energy (E a ) of composites is also lower than that of both NC and explosives. Hence, the unique structure of NC gel matrix embedded explosives inside demonstrated different mechanism of decomposition. Concretely, the rupture of the H-NCO = O bond in the cross-linked structure is detected firstly, subsequently, the macromolecular chains' scission site of gel firstly occurs at -C-O-C-in the ring, and then the scission of -NO 2 (from NC or explosive crystals) bonds happened. Hence, this study may provide promising fabrication strategy and basic theory for the application of NC-based nanocomposite energetics in high-energy propellants and explosives.

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Section: Introductionmentioning

confidence: 99%

Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity

Chen

Liu

Cao³

et al. 2021

Nano Select

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“…Within the assembled microspheres, PVDF could consume the oxide shell of nano-B to remove the reaction barrier, while the reaction between nano-Al and PVDF promoted the second oxidation reaction of nano-B. Zuo [ 37 ] maximized the heat release by encapsulating nano-Si and ammonium perchlorate (AP) into the NC matrix, which facilitated the elimination of the thin silica shell driven by perchloric acid.…”

Section: Particles (0d Ems)mentioning

confidence: 99%

Progress in Electrohydrodynamic Atomization Preparation of Energetic Materials with Controlled Microstructures

Zhang

et al. 2022

Molecules

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Constructing ingenious microstructures, such as core–shell, laminate, microcapsule and porous microstructures, is an efficient strategy for tuning the combustion behaviors and thermal stability of energetic materials (EMs). Electrohydrodynamic atomization (EHDA), which includes electrospray and electrospinning, is a facile and versatile technique that can be used to process bulk materials into particles, fibers, films and three-dimensional (3D) structures with nanoscale feature sizes. However, the application of EHDA in preparing EMs is still in its initial development. This review summarizes the progress of research on EMs prepared by EHDA over the last decade. The morphology and internal structure of the produced materials can be easily altered by varying the operation and precursor parameters. The prepared EMs composed of zero-dimensional (0D) particles, one-dimensional (1D) fibers and two-dimensional (2D) films possess precise microstructures with large surface areas, uniformly dispersed components and narrow size distributions and show superior energy release rates and combustion performances. We also explore the reasons why the fabrication of 3D EM structures by EHDA is still lacking. Finally, we discuss development challenges that impede this field from moving out of the laboratory and into practical application.

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Core–Shell Structured Nanoenergetic Materials: Preparation and Fundamental Properties

Hussain

et al. 2020

Advanced Materials

162

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Energetic materials, including explosives, pyrotechnics, and propellants, are widely used in mining, demolition, automobile airbags, fireworks, ordnance, and space technology. Nanoenergetic materials (nEMs) have a high reaction rate and high energy density, which are both adjustable to a large extent. Structural control over nEMs to achieve improved performance and multifunctionality leads to a fascinating research area, namely, nanostructured energetic materials. Among them, core–shell structured nEMs have gained considerable attention due to their improved material properties and combined multiple functionalities. Various nEMs with core–shell structures have been developed through diverse synthesis routes, among which core–shell structured nEMs associated with explosives and metastable intermolecular composites (MICs) are extensively studied due to their good tunability and wide applications, as well as excellent energetic (e.g., enhanced heat release and combustion) and/or mechanical properties. Herein, the preparation methods and fundamental properties of the abovementioned kinds of core–shell structured nEMs are summarized and the reasons behind the satisfactory performance clarified, based on which suggestions regarding possible future research directions are proposed.

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Fabrication of Si@AP/NC metastable intermixed nanocomposites (MICs) by electrospray method and their thermal reactivity

Cited by 21 publications

References 31 publications

Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity

Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity

Progress in Electrohydrodynamic Atomization Preparation of Energetic Materials with Controlled Microstructures

Core–Shell Structured Nanoenergetic Materials: Preparation and Fundamental Properties

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