Category Archives: Year 2013 Issue 1

Exergy and explosives BIEGAŃSKA J.

Jolanta BIEGAŃSKA ? Department of Technologies and Installations for Waste Management, Silesian University of Technology, Gliwice Abstract: Exergy is a term introduced to thermodynamics to determine ability to perform work in the environment with relation to human activity. Manufactured industrial explosive  materials are destined mainly to get unmined stone. Hence, their use is connected with the realization of the effective work. The exergy loss related to obtaining solid stone  in mining where explosive materials are used should be...
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Assessing the parameters of blast waves in the air generated by the detonation of 4,4?,5,5?-tetranitro-2,2?- biimidazole dihydrate and 3,3?-diaminoazoxyfurazan (DAAF) SZALA M., LEWCZUK R., PASZULA J.

Mateusz SZALA, Rafał LEWCZUK, Józef PASZULA ? Division of New Technology and Chemistry, Military University of Technology, Warsaw Abstract: The paper presents the results of studies covering the assessment of blast waves generated in the air by the detonation of 4,4?,5,5?-tetranitro-2,2?-biimidazole dihydrate  (TNBI?2H2O) and 3,3?-diamino-4,4?-azoxyfurazan (DAAF). Both compounds used in the studies have been produced at the Department of Explosives of the Military  University of Technology. As the reference material 2,4,6-trinitrotoluene (TNT) and 1,3,5,7-tetranitro-1,3,5,7-tetraaza-cyklooctane (octogen) were used. It...
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New shaped charges of flexible characteristics as an example of using silicone polymers in the technology of explosives

Karolina NIKOLCZUK, Justyna HADZIK, Zenon WILK ? Institute of Industrial Organic Chemistry in Warsaw, Branch in Krupski Młyn Abstract: The objective of this paper was to describe a series of tests related to the application of silicone polymers which can be added and modified with explosive materials  under ambient conditions without using the complex technological processes, high temperatures or complex, multi-stage chemical reactions. Moreover, the selection of  silicone polymers was economically justified and conducted regarding their availability in...
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Studies on elaborating non-homogeneous solid rocket propellant for propellant cartridges bonded to motor chamber wall

Bogdan FLORCZAK ? Institute of Industrial Organic Chemistry, Warsaw; Marek BIAŁEK, Mirosław SZCZEPANIK, Arkadiusz DZIK ? ZPS GAMRAT Sp. z o.o, Jasło Abstract: This paper presents the test results for the fundamental ballistic parameter of non-homogeneous solid rocket motors, that is, the linear burning rate and its dependence on  pressure. The burning rate was determined in the laboratory rocket motor system on the basis of the recorded characteristic curves p = f(t) obtained during the burning  procedure of...
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High energy tetrazole-based compounds as lead replacement explosives

Andrzej WOJEWÓDKA, Tomasz WITKOWSKI ? Faculty of Chemistry, Silesian University of Technology in Gliwice Abstract: This paper describes the analysis of possibilities of finding the substitute for lead azide among the derivatives of 1H-tetrazole and 5-aminotetrazole. The synthesis methods  of these compounds and their derivatives are presented. This paper presents the data on the standard enthalpy of formation, sensitivity to friction and impact as  well as the data on the standard parameters of detonation: pressure (C-J)  and velocity. Please...
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Tests on critical diameter and detonation velocity of mixtures of ammonium nitrate (V) and selected organic substances MARANDA A., SZYMAŃSKI R.

Andrzej MARANDA, Radosław SZYMAŃSKI ? Institute of Chemistry, Military University of Technology, Warsaw Abstract: This paper presents the measurement results of detonation velocity and critical diameter of two-component mixtures containing ammonium nitrate (V) and organic fuel, and  of three-component mixtures which additionally contain aluminium powder. The effects of the type and composition of organic fuel on detonation parameters of these  mixtures were determined. Please cite as: CHEMIK 2013, 67, 1, 13-18 Introduction The first explosives containing ammonium nitrate (V) were produced at...
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Testing detonation characteristics of hydromite emulsion explosive materials

Andrzej MARANDA ? Military University of Technology, Warsaw; Barbara GOŁĄBEK, Jacek SUSZKA ? Austin Powder Poland, Łukaszów; Iwona ZAWADZKA-MAŁOTA ? Central Mining Institute, Katowice; Tomasz SAŁACIŃSKI ? Institute of Industrial Organic Chemistry, Warsaw Abstract: This paper discuss the results from testing detonation parameters such as: the detonation velocity and detonation capacity of emulsion explosive materials containing  Hydrox S and Hydrox U matrices. The test results for dangerous properties of matrices including classification tests conducted for the eligibility of the...
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I bring my bike to school for the lesson on speed… ? an interview with Johanne PATRY – science, and technology advisor at Collége Bourget Rigaud in Quebec, Canada

I would like to present you to the readers. Could you tell us few words about yourself? What made you come to Poland? My name is Johanne Patry. I come from the French part of Canada, so my origins are  ainly French. Back home I am an expert councilor in science education and education as a  hole. I specialize in science: how to learn science. I also specialize in different approaches on  ow to learn. I am very oriented towards the...
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