Reactivity of polyaniline composites with attractive cyclic nitramines

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39922817" target="_blank" >RIV/00216275:25310/25:39922817 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.dt.2024.10.009" target="_blank" >https://doi.org/10.1016/j.dt.2024.10.009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.dt.2024.10.009" target="_blank" >10.1016/j.dt.2024.10.009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reactivity of polyaniline composites with attractive cyclic nitramines

Popis výsledku v původním jazyce

Composite microcrystals of the nitramines (NAs) viz., RDX, HMX, BCHMX, and CL-20 with electrically conductive polyaniline (PANi) are a charge transfer complexes in coagglomerated composite crystals (CACs). The activation energies of thermolysis, Ea, of the pure NAs and their PANi-CACs were determined using the Kissinger method, and decomposition processes are discussed. Except for the RDX/PANi CACs, all the other CACs show higher Ea values for decomposition compared to their pure NA counterparts. For all CACs, relationships are specified between the Ea values, on the one hand, and the squares of the detonation velocities, enthalpies of formation, spark energy and impact sensitivities, on the other. The relationships between their low-temperature heats of decomposition, DH, from DSC, and their enthalpy of formation, logarithm of impact sensitivity, electric spark energy, as well as detonation energy, are described. The PANi favorably influences the density of the corresponding CACs; surprisingly close linear correlations were found, and explained, between these densities and the Ea values. This presence of PANi strongly increased the electrical spark sensitivity of the CACs in comparison to the base NAs. Based on the results obtained, it can be noted in particular the exceptional desensitization of HMX to impact and the increased sensitivity to electrical spark by coating its crystals with polyaniline.

Název v anglickém jazyce

Reactivity of polyaniline composites with attractive cyclic nitramines

Popis výsledku anglicky

Composite microcrystals of the nitramines (NAs) viz., RDX, HMX, BCHMX, and CL-20 with electrically conductive polyaniline (PANi) are a charge transfer complexes in coagglomerated composite crystals (CACs). The activation energies of thermolysis, Ea, of the pure NAs and their PANi-CACs were determined using the Kissinger method, and decomposition processes are discussed. Except for the RDX/PANi CACs, all the other CACs show higher Ea values for decomposition compared to their pure NA counterparts. For all CACs, relationships are specified between the Ea values, on the one hand, and the squares of the detonation velocities, enthalpies of formation, spark energy and impact sensitivities, on the other. The relationships between their low-temperature heats of decomposition, DH, from DSC, and their enthalpy of formation, logarithm of impact sensitivity, electric spark energy, as well as detonation energy, are described. The PANi favorably influences the density of the corresponding CACs; surprisingly close linear correlations were found, and explained, between these densities and the Ea values. This presence of PANi strongly increased the electrical spark sensitivity of the CACs in comparison to the base NAs. Based on the results obtained, it can be noted in particular the exceptional desensitization of HMX to impact and the increased sensitivity to electrical spark by coating its crystals with polyaniline.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Defence Technology

ISSN

2096-3459

e-ISSN

2214-9147

Svazek periodika

45

Číslo periodika v rámci svazku

March 2025

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

001462926900001

EID výsledku v databázi Scopus

2-s2.0-86000437784