Effective Performance Modifications for a Composite Rocket Propellant via Coagglomerates of Cyclic Nitramines
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39922835" target="_blank" >RIV/00216275:25310/25:39922835 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1021/acsomega.5c01848" target="_blank" >https://doi.org/10.1021/acsomega.5c01848</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsomega.5c01848" target="_blank" >10.1021/acsomega.5c01848</a>
Alternative languages
Result language
angličtina
Original language name
Effective Performance Modifications for a Composite Rocket Propellant via Coagglomerates of Cyclic Nitramines
Original language description
The new combustion modifier cis-1,3,4,6-tetranitrooctahydroimidazo-[4,5-d]imidazole (BCHMX) was tested on an aluminum HMX/HTPB/AP propellant. Monitored were the changes in the propellant characteristics, when the 10, 20, and 30 wt % ammonium perchlorate (AP) were substituted by pure 1,3,5,7-tetranitro-1,3,5.7-tetrazocane (HMX), mechanical mixture HMX/BCHMX (PM), and coagglomerate of HMX/BCHMX (CACs), the latter two in a weight ratio of 8:1. By means of the powder X-ray diffraction and FTIR and Raman spectroscopies, it was confirmed that CACs are a mixture of cocrystal βHMX/BCHMX with excess β-HMX. The relationships were discovered between the burning rate of the prepared samples and the heat of combustion (Qc), ignition temperature, specific rate constant of thermal decomposition, impact sensitivity, hardness, and specific impulse. Correspondingly, relationships between Qc and ignition temperature, as well as the impact and friction sensitivities, were investigated. It was found that increasing the amount of CACs n the propellant reduces the pressure exponent, while pure HMX and PM have the opposite effect. The significantly positive effectof CACs on the burning rate, especially at 20 wt % substitution of AP by these microcrystals, is another noteworthy finding.
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
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Omega
ISSN
2470-1343
e-ISSN
2470-1343
Volume of the periodical
10
Issue of the periodical within the volume
27
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
29194-29208
UT code for WoS article
001498236600001
EID of the result in the Scopus database
2-s2.0-105006787162