Shock Sensitivity of Pressed RDX‐Based Plastic Bonded Explosives under Short‐Duration and High‐Pressure Impact Tests

Li, Tao; Hua, Cheng; Li, Qiang

doi:10.1002/prep.201300012

Cited by 15 publications

(9 citation statements)

References 9 publications

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“…6 Cyclotrimethylenetrinitramine (C 3 H 6 N 6 O 6 or RDX) is one of the most powerful HEs, yet with good stability under ambient conditions. Consequently, this archetypal HE has been studied extensively both experimentally [11][12][13][14] and theoretically. [15][16][17][18] In particular, the reaction pathways of a single RDX molecule have been mapped out in detail.…”

mentioning

confidence: 99%

Multistage reaction pathways in detonating high explosives

Liu

Kalia

Nakano

et al. 2014

Applied Physics Letters

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Articles you may be interested inInitial chemical events in shocked octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine: A new initiation decomposition mechanism J. Chem. Phys. 136, 044516 (2012); 10.1063/1.3679384Combining ab initio quantum mechanics with a dipole-field model to describe acid dissociation reactions in water: First-principles free energy and entropy calculations Atomistic mechanisms underlying the reaction time and intermediate reaction products of detonating high explosives far from equilibrium have been elusive. This is because detonation is one of the hardest multiscale physics problems, in which diverse length and time scales play important roles. Here, large spatiotemporal-scale reactive molecular dynamics simulations validated by quantum molecular dynamics simulations reveal a two-stage reaction mechanism during the detonation of cyclotrimethylenetrinitramine crystal. Rapid production of N 2 and H 2 O within $10 ps is followed by delayed production of CO molecules beyond ns. We found that further decomposition towards the final products is inhibited by the formation of large metastable carbon-and oxygen-rich clusters with fractal geometry. In addition, we found distinct unimolecular and intermolecular reaction pathways, respectively, for the rapid N 2 and H 2 O productions. V C 2014 AIP Publishing LLC. [http://dx.

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mentioning

confidence: 99%

Multistage reaction pathways in detonating high explosives

Liu

Kalia

Nakano

et al. 2014

Applied Physics Letters

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“…6 RDX (C 3 H 6 N 6 O 6 ) or Cyclotrimethylenetrinitramine is one of the most powerful HEs, yet with good stability under ambient conditions. Consequently, this archetypal HE has been studied extensively both experimentally [11][12][13][14] and theoretically [15][16][17][18] . In particular, the reaction pathways of a single RDX molecule have been mapped out in detail.…”

Section: -3mentioning

confidence: 99%

“…The initial system setup is composed of 168 × 5 × 5 unit cells of RDX crystal in an MD simulation box of dimensions 222.8 × 5.787 × 5.354 nm 3 at room temperature. Real HEs are defective (e.g., plasticizer bonded, wax added, and porous), 14 and these heterogeneities lead to complex multidimensional flows even in macroscopically unidirectional detonation, 37 In particular, voids cause localized hot spots, which essentially drive the decomposition reaction. 38 To mimic this effect, a void of size 3 × 3 × 3 unit cells is randomly inserted in every 5 × 5 × 6 unit cells of the RDX crystal.…”

Section: 21mentioning

confidence: 99%

Multistage reaction pathways in detonating RDX

Liu

Kalia

Nakano

et al. 2017

AIP Conference Proceedings

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“…As highly-filled polymeric composites, polymer bonded explosives (PBXs) consist of 90-95 wt.% of explosive crystals and 5-10 wt.% of polymeric binder [12][13][14][15][16][17]. Because of the differences in molecular polarity and structure between explosive crystals and a polymeric binder, PBXs are immiscible, resulting in the inferior performance of the final products.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Non-linear Viscoelastic Properties of Polymer Bonded Explosives Based on Graphene and a Neutral Polymeric Bonding Agent

Lin¹,

He²,

Liu³

et al. 2017

Cent. Eur. J. Energ. Mater.

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During their long-term storage and transport, polymer bonded explosives (PBXs) will be subjected to complex thermal physical environments with combined thermal and mechanical loads. The creep behaviour results in a change of physical and mechanical properties, which consequently influences the explosive performance. In this work, graphene and a neutral polymeric bonding agent (NPBA) were selected to improve the non-linear creep properties of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB)-based PBXs. The results were compared with the creep response of the corresponding PBXs without additives and with graphene alone. It was observed that graphene and an NPBA exhibited a positive effect, improving the creep resistance of TATB-based PBXs. The compressive and tensile strength of 0.5 wt.% graphene-filled PBXs were improved by 5.1% and 29.2%, respectively, compared to raw TATB-based PBXs without additives. The performance of the PBXs was further enhanced by the addition of 0.1 wt.% NPBA. For a given stress and temperature, the TATB-based PBXs with graphene and NPBA deformed significantly less than the PBXs filled with graphene alone.

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Shock Sensitivity of Pressed RDX‐Based Plastic Bonded Explosives under Short‐Duration and High‐Pressure Impact Tests

Cited by 15 publications

References 9 publications

Multistage reaction pathways in detonating high explosives

Multistage reaction pathways in detonating high explosives

Multistage reaction pathways in detonating RDX

Enhanced Non-linear Viscoelastic Properties of Polymer Bonded Explosives Based on Graphene and a Neutral Polymeric Bonding Agent

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