Synergetic Explosive Performance through Cocrystallization

2021 ◽  
Author(s):  
Christopher J. Snyder ◽  
Gregory H. Imler ◽  
David E. Chavez ◽  
Damon A. Parrish
Keyword(s):  
Explosive Performance

Shock Waves and Detonations, Explosive Performance

2018 ◽  
pp. 87-142
Author(s):  
Per-Anders Persson ◽  
Roger Holmberg ◽  
Jaimin Lee
Keyword(s):  
Shock Waves ◽  
Explosive Performance

Crystal structure and explosive performance of a new CL-20/benzaldehyde cocrystal

2020 ◽  
Vol 1215 ◽  
pp. 128267 ◽  
Author(s):  
Lingxiang Bao ◽  
Penghao Lv ◽  
Teng Fei ◽  
Yujia Liu ◽  
Chenghui Sun ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Explosive Performance

scholarly journals Improving the Explosive Performance of Aluminum Nanoparticles with Aluminum Iodate Hexahydrate (AIH)

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Jennifer L. Gottfried ◽  
Dylan K. Smith ◽  
Chi-Chin Wu ◽  
Michelle L. Pantoya
Keyword(s):  
Aluminum Nanoparticles ◽  
Explosive Performance

1-Amino-3-nitroguanidine (ANQ) in High-performance Ionic Energetic Materials

2012 ◽  
Vol 67 (6) ◽  
pp. 573-588 ◽  
Author(s):  
Niko Fischer ◽  
Thomas M. Klapötke ◽  
Jörg Stierstorfer
Keyword(s):  
Nitric Acid ◽  
Energetic Materials ◽  
Electrical Discharge ◽  
High Performance ◽  
Small Scale ◽  
Detonation Pressure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dsc Measurements ◽  
Explosive Performance

1-Amino-3-nitroguanidine (ANQ, 2) was synthesized via hydrazinolysis of nitroguanidine (1). An appropriate Lewis structure of ANQ is drawn based on VB calculations. Due to its basicity, it can be protonated by strong mineral acids or acidic heterocycles. In order to synthesize new energetic materials the nitrate (3) and perchlorate (4) salts of 1-amino-3-nitroguanidine were synthesized by protonation of 2 with 40% nitric acid and 60% perchloric acid, respectively. 5-Nitrimino-1,4H-tetrazole obtained by reacting 5-amino-1H-tetrazole with 100% HNO3 was used to synthesize the nitriminotetrazolate salt 5. Furthermore, the dinitramide salt 6 of 1-amino-3-nitroguanidine was synthesized by metathesis reaction of silver dinitramide and 1-amino-3-nitroguanidinium chloride. The dinitroguanidinate salt 7 was synthesized by protonation of 2 with 1,3-dinitroguanidine, which was prepared from nitroguanidine in anhydrous nitric acid/N2O5. All compounds were fully characterized by singlecrystal X-ray diffraction, vibrational spectroscopy (IR and Raman), multinuclear NMR spectroscopy, mass spectrometry, elemental analysis, and DSC measurements. The heats of formation of 2 - 7 were calculated using the atomization method based on CBS-4M enthalpies. With these values and the experimental (X-ray) densities several detonation parameters such as the detonation pressure, velocity, energy, and temperature were computed using the EXPLO5 code. In addition, the sensitivities towards impact, friction and electrical discharge were tested using the BAM drophammer, friction tester as well as a small-scale electrical discharge device. A Koenen test with 1-amino-3-nitroguanidinium nitrate (3) was carried out in order to evaluate its explosive performance and shipping classification.

Explosive Performance Properties of Erythritol Tetranitrate (ETN)

2015 ◽  
Vol 40 (4) ◽  
pp. 460-462 ◽  
Author(s):  
Virginia W. Manner ◽  
Daniel N. Preston ◽  
Bryce C. Tappan ◽  
V. Eric Sanders ◽  
Geoff W. Brown ◽  
...  
Keyword(s):  
Performance Properties ◽  
Explosive Performance

The Poly-Rho Test as a Screening Tool for Explosive Performance

2005 ◽  
Vol 30 (6) ◽  
pp. 430-434 ◽  
Author(s):  
Herbert H. Harry ◽  
Kenneth J. Uher ◽  
Stephanie I. Hagelberg ◽  
Ernest L. Hartline
Keyword(s):  
Screening Tool ◽  
Explosive Performance

scholarly journals Contraction type influences the human ability to use the available torque capacity of skeletal muscle during explosive efforts

2012 ◽  
Vol 279 (1736) ◽  
pp. 2106-2115 ◽  
Author(s):  
Neale A. Tillin ◽  
Matthew T. G. Pain ◽  
Jonathan P. Folland
Keyword(s):  
Skeletal Muscle ◽  
Joint Angle ◽  
Knee Extensors ◽  
Concentric Contractions ◽  
Human Ability ◽  
Explosive Performance ◽  
Torque Capacity ◽  
Contraction Type ◽  
Voluntary Contractions ◽  
Maximum Voluntary Torque

The influence of contraction type on the human ability to use the torque capacity of skeletal muscle during explosive efforts has not been documented. Fourteen male participants completed explosive voluntary contractions of the knee extensors in four separate conditions: concentric (CON) and eccentric (ECC); and isometric at two knee angles (101°, ISO101 and 155°, ISO155). In each condition, torque was measured at 25 ms intervals up to 150 ms from torque onset, and then normalized to the maximum voluntary torque (MVT) specific to that joint angle and angular velocity. Explosive voluntary torque after 50 ms in each condition was also expressed as a percentage of torque generated after 50 ms during a supramaximal 300 Hz electrically evoked octet in the same condition. Explosive voluntary torque normalized to MVT was more than 60 per cent larger in CON than any other condition after the initial 25 ms. The percentage of evoked torque expressed after 50 ms of the explosive voluntary contractions was also greatest in CON (ANOVA; p < 0.001), suggesting higher concentric volitional activation. This was confirmed by greater agonist electromyography normalized to M max (recorded during the explosive voluntary contractions) in CON. These results provide novel evidence that the ability to use the muscle's torque capacity explosively is influenced by contraction type, with concentric contractions being more conducive to explosive performance due to a more effective neural strategy.

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