Co-agglomerated crystals of 2,2 ',4,4 ',6,6 '-hexanitro-stilbene/-azobenzene with attractive nitramines
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F23%3A39920212" target="_blank" >RIV/00216275:25310/23:39920212 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1385894722066815?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1385894722066815?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cej.2022.141200" target="_blank" >10.1016/j.cej.2022.141200</a>
Alternative languages
Result language
angličtina
Original language name
Co-agglomerated crystals of 2,2 ',4,4 ',6,6 '-hexanitro-stilbene/-azobenzene with attractive nitramines
Original language description
Co-agglomerated crystals (CACs) of trans-2,2,4,4 ',6,6 '-hexanitrostilbene (HNS) and trans-2,2 ',4,4 ',6,6 '-hexani-troazobenzene (HNAB) with RDX, fl-HMX, BCHMX and epsilon-CL-20 have been prepared. Powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), Raman studies and differential thermal analysis (DTA) have confirmed that this process leads to the formation of co-crystals (CCs), in which HMX is present in its delta-form, CL-20 in its fl-form and trans-HNS changes its conformation to cis-form. In most cases, these significant structural changes and intermolecular-orientations have improved the impact sensitivities, mainly in some CACs with cis-HNS; for CL-20, on the other hand, the insertion of HNS or HNAB into its crystal lattice is destabilizing. Logical relationships between some FTIR, Raman vibrational modes of the CACs studied and parameters of their initiation and detonation have shown greater information about corresponding molecular structural relation-ships. The detonation energies of these co-crystals are in most of cases higher than that of correspond to the percentage of the coformers in them. It has been shown that this co-agglomeration can reduce the sensitivity of nitramines (with the exception of CL-20) roughly to the level of the sensitivity of analogous plastic-bonded explosives (PBXs), with the high-performance parameters of the resulting CACs being maintained. From a practical point of view, the combination of HMX and HNS appears to be the most optimal; these CACs at a molar ratio of 1.00/0.11 have exhibited the impact sensitivity of 47 J and the calculated detonation velocity 8.98 km. s-1.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Engineering Journal
ISSN
1385-8947
e-ISSN
1873-3212
Volume of the periodical
457
Issue of the periodical within the volume
February
Country of publishing house
CH - SWITZERLAND
Number of pages
18
Pages from-to
141200
UT code for WoS article
000925238800001
EID of the result in the Scopus database
2-s2.0-85146095099