Application and properties of nanometric HMX in PBX

Liu, J.; Hao, Gazi; Rong, Yu; Xiao, Leqin; Jiang, Wei; Li, F.; Jing, Ch.; Gao, Han; Chen, T.; Ke, Xiang

doi:10.1134/s001050821706017x

Cited by 14 publications

(8 citation statements)

References 19 publications

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“…Previous research in the field of energy absorbing lattices focuses predominantly on 2D honeycomb structures, due to their simpler analytical and numerical models, with fewer studies available for 3D structures . Some articles report discrepancies on individual aspects between 2D and 3D structures of the same unit cell type, suggesting that results are not simply scalable and cannot be generalized .…”

Section: Introductionmentioning

confidence: 99%

“…For simplicity or due to computational limitations, many studies focus on linear‐elastic material properties or deformations in the linear‐elastic regime, and do not take larger deformations into account, which are required to draw conclusions on energy absorption . Other studies look individually at quasi‐static or dynamic strain rates, but do not provide information on the validity of the results outside these ranges.…”

Section: Introductionmentioning

confidence: 99%

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Energy Absorption Properties of Periodic and Stochastic 3D Lattice Materials

Mueller

Matlack

Shea

et al. 2019

Advcd Theory and Sims

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Architected lattices can be designed to have tailorable functionalities by controlling their constitutive elements. However, little work has been devoted to comparing energy absorption properties in different periodic three-dimensional geometries to each other and to comparable foam-like random structures. This knowledge is essential for the entire design process. In this work, the authors conduct a systematic and comprehensive computational study of the quasi-static and dynamic energy absorption properties of various different geometries. They test compression loading over strain rates varying from 1 to 10 4 s −1 . The authors analyze geometries with varying degrees of nodal connectivity, ranging from bending dominated to stretching dominated, at different orientations, and compare their response to equivalent stochastic lattices. Results show relatively high stress peaks in the periodic lattices, even in bending dominated lattices at certain orientations. Conversely, the stochastic geometries show a relatively constant stress response over large strains, which is ideal for energy absorbing applications. Still, results show that specific orientations of bending dominated periodic lattice geometries outperform their stochastic equivalents. This work can help to quickly identify the potential of different unit cell types and aid in the development of lattices for impulse mitigation applications, such as in protective sports equipment, automotive crashworthiness, and packaging.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy Absorption Properties of Periodic and Stochastic 3D Lattice Materials

Mueller

Matlack

Shea

et al. 2019

Advcd Theory and Sims

View full text Add to dashboard Cite

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“…To further explore the application potential of GPU-3.0 in ECMs, an ECM powder (denoted GPU/Al) comprising GPU-3.0 adhesive and Al was prepared. 52 Figure 8a shows the tensile curve of the GPU/Al spline, and the specific parameters are shown in the inset. Because of the comprehensive performance of GPU-3.0 in terms of co-and adhesion, GPU/Al is endowed with a good tensile strength (2.52 MPa) and toughness (2.45 MJ m −3 ), 53,54 which may rival those of traditional ECMs without self-healing properties.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Simultaneous Configuration of High Room-Temperature Self-Healing Efficiencies and Tough Mechanical Properties of Energetic Adhesives for Energetic Composites

Yang

Zhang

Zhou

et al. 2023

ACS Appl. Polym. Mater.

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Room-temperature self-healing adhesives require more flexible polymer chains and weaker interactions, which are not conducive to good mechanical properties. Therefore, an energetic self-healing adhesive containing asymmetric alicyclic structures and multiple urea groups was designed. The asymmetric alicyclic structures could form loosely packed hard domains, and the irregular arrangement of multiple continuous urea groups could strengthen the physical cross-linking and improve the strengths of the hard domains. As a result, adhesives with improved mechanical properties (tensile strength and toughness) were obtained, and their dynamic adaptabilities and responsiveness required for self-healing at room temperature were maintained. The glycidyl azide polymer-based polyurethane (GPU) adhesive (GPU-3.0) exhibited excellent comprehensive performance in terms of toughness, healing efficiency, adhesion strength, and energy level. The maximum tensile strength and toughness of the energetic composite material (ECM, GPU/Al) prepared using GPU-3.0 and Al were 2.52 MPa and 2.45 MJ m–3, respectively. After 72 h at room temperature, the scratches on the GPU/Al surface were no longer observed and the mechanical properties were completely recovered. Therefore, the designed adhesive, which displays a high-efficiency room-temperature self-healing capacity and good mechanical properties, is applicable in self-healing ECM systems. This strategy should provide insights for use in improving the stabilities and safety of ECMs.

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“…In PBX explosives, CÀ H polymer, CÀ F rubber and polyurethane elastomer are commonly used [22][23][24][25] . Cis-1,4-polybutadiene rubber(BR) is one of the CÀ H binders, but it has weak interfacial interaction with HMX due to its lack of active groups that interact with nitro groups.…”

Section: Instructionmentioning

confidence: 99%

Improvement of Interfacial Properties Between Cis‐1,4‐polybutadiene Rubber and HMX Crystal

Guo

Wen

et al. 2020

ChemistrySelect

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The interfacial strength between explosive crystal and binder usually plays a key role in exhibiting excellent mechanical properties of composite explosives. In this paper, high energetic crystal octahydro‐1,3,5,7‐tetranitro‐1,3,5,7‐tetrazocine (HMX) was coated by the typical binder cis‐1,4‐polybutadiene rubber (BR), then two silane coupling agents were added to the composite particles to enhance the interface strength. The results showed that the BR binder modified by silane coupling agent is easier to spread on the surface of HMX crystal, and form a good coating effect. In the mechanical properties test of composite particles, (3‐Aminopropyl) trimethoxysilane significantly improved the tensile and compressive strength of HMX/BR based composite particles, while 3‐(Triethoxysilyl) propionitrile decreased the mechanical properties of the composite particles.

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Application and properties of nanometric HMX in PBX

Cited by 14 publications

References 19 publications

Energy Absorption Properties of Periodic and Stochastic 3D Lattice Materials

Energy Absorption Properties of Periodic and Stochastic 3D Lattice Materials

Simultaneous Configuration of High Room-Temperature Self-Healing Efficiencies and Tough Mechanical Properties of Energetic Adhesives for Energetic Composites

Improvement of Interfacial Properties Between Cis‐1,4‐polybutadiene Rubber and HMX Crystal

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