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1
Content available Utleniacz – podstawowy składnik górniczych materiałów wybuchowych
Maranda A., Sitkiewicz-Wołodko R., Zrobok R., Florczak B., Bogusz R.
Przegląd Górniczy
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2017
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T. 73, nr 3
30--35
PL
W artykule przedstawiono właściwości utleniaczy nieorganicznych (azotany(V), chlorany(V), chlorany (VII) i nadtlenek wodoru) stosowanych lub mogących znaleźć zastosowanie w górniczych środkach strzałowych. Zestawiono ich masy cząsteczkowe, gęstości, bilanse tlenowe, reakcje rozkładu, temperatury topnienia i rozkładu oraz rozpuszczalności w wodzie. Wyeksponowano ich wady i zalety, decydujące o zakresie wykorzystania w poszczególnych typach mieszanin wybuchowych.
EN
This paper presents the characteristics of inorganic oxidizers (nitrate(V), chlorate(V), chlorate(VII) hydrogen dioxide) used or likely to be used in the mining blasting agents. Their molecular weights, densities, balances oxygen, decomposition reactions, temperatures of melting and decomposition and solubilities in water have been summarized. Their advantages and disadvantages, deciding on the use of particular types of explosive compositions have been exposed.
2
Content available remote Komponenty niejednorodnych stałych paliw rakietowych
Florczak B.
Przemysł Chemiczny
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2011
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T. 90, nr 12
2164-2169
3
Content available Basic Characteristics for Estimation Polynitrogen Compounds Effciency
Smirnov A., Lempert D., Pivina T., Khakimov D.
Central European Journal of Energetic Materials
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2011
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Vol. 8, nr 4
233-247
EN
Basing on analysis of experimental data for physicochemical parameters of 300 energetic compounds from different chemical classes, a set of basic characteristics (enthalpies of formation, molecular crystals densities, detonation parameters, as well as sensitivity to different kinds of impact) has been considered and some calculations schemes have been elaborated to estimate these characteristics for polynitrogen compounds. The limits of physicochemical values for energetic materials (EMs) parameters have been estimated. A large set of compounds has been investigated and some of them seem to be rather effective as explosives or monopropellants. There are about ten powerful compounds (e.g. octanitrocubane, hexanitrohexaazaisowurtzitane, azanitrofurazan, etc.), explosives- oxidizers (such as ammonium dinitroamide and bis(difuroamine-dini troethil) nitroamine) and several hypothetic substances (not synthesized yet), such as octaazacubane, octaazatetraen, tetranitrotetraazacubane etc. Energetic properties were estimated as for individual compounds, as well as for energetic compositions containing these substances together with other ones in the aim to estimate the effectiveness of their use as components of solid composite propellants.
4
Content available remote Potencjał redox jako istotny parametr kontroli technologicznych procesów produkcji szkieł użytkowych. Cz. I - Potencjał redox stopu szklanego oraz czynniki wpływające na jego wartość.
Zawiła J.
Szkło i Ceramika
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2006
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R. 57, nr 3
14-19
EN
In the paper, there have been described problems connected with function of the redox state in the melting process of the commercial glasses. Definition and the most important redox-reactions occuring during melting process of glass batch components have been presented as well as influence of some essential factors on the redox-potential values. Especially, attention has been devoted the problems connected with influence of such factors as chemical composition of glass batch, composition of gas atmosphere above the surface of the melt, application and organic contaminations of the cullet.
5
Content available remote Energetic Characteristics of Solid Composite Propellants and Ways for Energy Increasing
Lempert D. B., Nechiporenko G. N., Manelis G. B.
Central European Journal of Energetic Materials
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2006
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Vol. 3, nr 4
73-87
EN
Energetic characteristics of solid composite propellants of different type and application are described - metal-free compositions containing an oxidizer and a fuel-binder only; compositions containing additionally an energetic compound (Al, Be, Mg, B), metal hydrides (AlH3, BeH2, BxNyHz). A considerable attention is attracted to analysis of oxidizers (ammonium perchlorate, hydroxylammonium perchlorate, ammonium dinitramide etc) because oxidizer occupies the greatest mass fraction in propellant and mostly that is the oxidizer that determines energetic characteristics of the propellant. The main principles of the using of different kinds of binder are considered. It was shown that the competence to choose the binder to the given oxidizer can increase considerably the energetic characteristics even without creation of new compounds. Ways to optimize solid composite propellants destined for missile complexes of different mass characteristics are described. Different ways to further development of solid composite propellants are presented - optimization of formulations basing on accessible components; creation of new more effective binders, having additional functions of oxidizer or gasifying component etc. Ecological problems of solid composite propellants are also a topic of the paper. Ways to decrease ecological danger while solid composite propellants using are investigated.
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