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Relative explosive strength of some explosive mixtures containing urea and/or peroxides

Authors: Hussein, Ahmed Khaled Mohamed; Zeman, Svatopluk; Suceska, Muhamed; Jungová, Marcela;

Relative explosive strength of some explosive mixtures containing urea and/or peroxides

Abstract

Several mixtures, based on urea derivatives and some inorganic oxidants, including also alumina, were studied by means of ballistic mortar techniques with TNT as the reference standard. The detonation pressure, P, detonation velocity, D, detonation energy, Q, and volume of gaseous product at standard temperature and pressure (STP), V, were calculated using Explo5 V6.3 thermochemical code. Performance of the mixtures studied was discussed in relation to their thermal reactivity, determined by means of differential thermal analysis (DTA). It is shown that the presence of hydrogen peroxide in the form of its complex with urea (i.e. as UHP) has a positive influence on the explosive strength of the corresponding mixtures which is linked to the hydroxy-radical formation in the mixtures during their initiation reaction. These radicals might initiate (at least partially) powdered aluminum into oxidation in the CJ plane of the detonation wave. Mixtures containing UHP and magnesium are dangerous because of potential auto-ignition

Některé směsi na bázi derivátů močoviny a některých anorganických oxidačních činidel, včetně práškového hliníku, byly studovány pomocí balistického moždíře na TNT jako referenčního standardu. Detonační tlak, P, detonační rychlost, D, detonaci energie, Q, a objem plynných produktů při standardní teplotě a tlaku (STP), V, byly vypočteny za použití Explo5 V6.3 termochemického kódu. Výkon studovaných směsí byl diskutováno ve vztahu k jejich tepelné reaktivitě, stanovené pomocí diferenční termické analýzy (DTA). Je ukázáno, že přítomnost peroxidu vodíku ve formě jeho komplexu s močovinou (tj jako UHP), má pozitivní vliv na výkonnost odpovídajících směsí, což souvisí s hydroxy-radikály ve směsi během iniciační reakce. Tyto radikály mohou iniciovat (alespoň částečně), práškový hliník již v CJ rovině detonační vlny. Směsi, které obsahují UHP a hořčík jsou nebezpečné z důvodu možného samovznícení.

Countries
Croatia, Czech Republic
Related Organizations
Keywords

Perchlorates, Nitrates, perchloráty, nitráty, Ballistic mortar ; TNT ; DTA ; peroxides ; perchlorates ; nitrates ; urea, Ballistic mortar, peroxidy, Urea, balistický moždíř, DTA, močovina, Peroxides

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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