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    Wyświetlanie 1-6 z 6
    Tytuł:
    NTO-based Melt-cast Insensitive Compositions
    Autorzy:
    Trzciński, W. A.
    Lasota, J.
    Chyłek, Z.
    Szala, M.
    Paszula, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/358929.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    NTO
    insensitive explosives
    melt-cast explosives
    Opis:
    This paper presents research on insensitive melt-cast explosive compositions based on 3-nitro-1,2,4-triazol-5-one (NTO) and containing TNT, wax, Al and RDX. The viscosity of the compositions in the operating temperature range was measured. Thermal analysis was performed as well as thermal stability and sensitivity to mechanical and thermal stimuli were tested. The detonation parameters were also determined. Finally, the acceleration ability (Gurney energy) and the JWL coefficients for the detonation products were established.
    Źródło:
    Central European Journal of Energetic Materials; 2016, 13, 3; 592-611
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Explosive Properties of Melt Cast Erythritol Tetranitrate (ETN)
    Autorzy:
    Künzel, M.
    Matyáš, R.
    Vodochodský, O.
    Pachman, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/358875.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    sensitivity
    detonation velocity
    melt cast
    erythritol tetranitrate
    Gurney velocity
    Opis:
    Erythritol tetranitrate (ETN) is a low melting, solid, nitrate ester with significant explosive properties. The increased availability of its precursor (erythritol), which is now used as a sweetener, has attracted attention to the possible misuse of ETN as an improvised explosive. However, ETN also has some potential to be used as a component of military explosives or propellants. This article focuses on the properties of melt-cast ETN. The sensitivity of the compound towards impact and friction was tested. The explosive performance was evaluated, based on cylinder expansion tests and detonation velocity measurements. The impact energy and friction force required for 50% probability of initiation was 3.79 J and 47.7 N, respectively. A Gurney velocity value of G = 2771 m·s−1 and a detonation velocity of 8027 m·s−1 at a charge density of 1.700 g·cm−3, were found for the melt-cast material. The sensitivity characteristics of melt-cast ETN does not differ significantly from either literature values or the authors’ data measured using the crystalline material. The explosive performance properties were found to be close to those of PETN.
    Źródło:
    Central European Journal of Energetic Materials; 2017, 14, 2; 418-429
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Melt-Cast Composition Based on NTO and FOX-7
    Autorzy:
    Belaada, A.
    Trzciński, W. A.
    Chyłek, Z.
    Szala, M.
    Paszula, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/358828.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    NTO
    FOX-7
    low-sensitivity explosives
    melt-cast explosives
    Opis:
    A melt-cast composition containing NTO, FOX-7, TNT, Al and wax was prepared and tested. The viscosity of the melted composition was measured. Its sensitivity to impact, friction, shock wave and jet impact were determined, and its thermal stability and ignition temperature were established. Some detonation properties of the composition were investigated. The heat of detonation was measured using a calorimetric bomb. The detonation pressure and velocity were determined in a plate-dent test. The results of a cylinder test were used for the determination of the Gurney energy, the detonation pressure and energy, and the so-called effective exponent of the expansion isentrope and the JWL equation of state of the detonation products.
    Źródło:
    Central European Journal of Energetic Materials; 2016, 13, 4; 882-902
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies on FOX-7 Based Melt Cast High Explosive Formulations
    Autorzy:
    Mishra, V. S.
    Vadali, S. R.
    Garg, R. K.
    Joshi, V. S.
    Wasnik, R. D.
    Asthana, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/358915.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    melt cast
    FOX-7
    LOVEX
    shock sensitivity
    VOD
    impulse
    IMs
    Opis:
    The key driving force in modern explosive research is the development of low vulnerable high explosive (LOVEX) compositions for future applications in insensitive munitions (IMs). The increasing demand for LOVEX has led to exhaustive studies on low vulnerable explosives as a replacement for conventional cyclo-1,3,5-trimethylene-2,4,6-trinitramine (RDX) in 2,4,6-trinitrotoluene (TNT) melt cast high explosive formulations. In the present study, 1,1-diamino-2,2dinitroethene (FOX-7) has been evaluated as a possible RDX replacement in TNT based, non-aluminized as well as aluminized, melt cast formulation. FOX-7 based melt cast formulations were characterized for their sensitivity to mechanical/shock stimuli, velocity of detonation (VOD), blast parameters and thermal decomposition behavior. These characteristics are compared with the corresponding RDX based compositions as reference standard. The studies show that with little sacrifice on performance parameters, FOX-7 based, non-aluminized and aluminized, melt cast formulations are found to be less vulnerable, compared with the corresponding RDX based formulations.
    Źródło:
    Central European Journal of Energetic Materials; 2013, 10, 4; 569-580
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies on NTO-, FOX-7- and DNAN-based Melt Cast Formulations
    Autorzy:
    Mishra, V. S.
    Vadali, S. R.
    Bhagat, A. L.
    Garg, R. K.
    Kugaonkar, V. M.
    Raman, S.
    Sinha, R. K.
    Asthana, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/358500.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    melt cast
    DNAN
    TNT
    FOX-7
    NTO
    RDX/TNT
    VOD
    sensitivity
    Opis:
    In the present paper, 2,4-dinitroanisole (DNAN) has been evaluated as a melt cast explosive in comparison to the widely used 2,4,6-trinitrotoluene (TNT). The detonation failure diameter of a bare DNAN charge is greater than 100 mm and about 44 mm with 1.5 mm steel confinement. Comparative studies of two sets of formulations were carried out. The first set comprised formulations containing 60% of NTO, FOX-7, HMX or RDX and 40% of DNAN or TNT. The second set comprised formulations containing 30% of NTO, FOX-7, TATB or RDX and 70% of DNAN or TNT. The studies were mainly concentrated on characterization of the formulations, which included determination of the sensitivity parameters and the velocity of detonation (VOD). The study confirmed that DNAN and DNAN-based formulations are relatively insensitive compared to TNT and the analogous TNT-based formulations respectively. The rate of the detonation reaction of DNAN is enhanced in the presence of the high energy ingredients RDX, HMX, FOX-7 and NTO to varying degrees. The VODs of the FOX-7/TNT and RDX/TNT formulations match closely with the proportions of FOX-7 and RDX under study. The VOD and shock sensitivity of the FOX-7/DNAN formulations decrease rapidly compared to the RDX/DNAN formulations, with increases in the proportion of FOX-7 or RDX. The combinations of NTO with TNT, and NTO with DNAN, are more shock insensitive than TNT or DNAN alone. NTO-based compositions are more insensitive than FOX-7-based compositions.
    Źródło:
    Central European Journal of Energetic Materials; 2017, 14, 2; 403-417
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Melt-cast Energetic Matrices with 3-Nitro-1,2,4-triazole Derivatives for Composite Explosives
    Autorzy:
    Komarova, Marina
    Vakutin, Aleksey
    Kazutin, Maxim
    Kozyrev, Nikolai
    Sukhanov, Gennady
    Powiązania:
    https://bibliotekanauki.pl/articles/1063044.pdf
    Data publikacji:
    2020
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    melt-cast energetic matrix
    3-nitro-1,2,4-triazole
    TNT
    composite explosives
    Opis:
    Safety requirements for the manufacture, use and storage of high-energy materials and explosive substances necessitate a search for new insensitive components of fusible energetic matrices (propellant matrices) in order to completely or partially replace 2,4,6-trinitrotoluene (TNT). 3-Nitro-1,2,4-triazole derivatives and their melt-casts with TNT may be proposed as such replacements. Differential scanning calorimetry was employed to characterize the thermal behaviour of 1-methyl-3-nitro-1,2,4-triazole, 1-ethoxymethyl-3-nitro-1,2,4-triazole, t-butyl-3-nitro-1,2,4-triazole and their melt-casts with TNT. This study showed that 1-methyl-3-nitro-1,2,4-triazole and its melt-casts with TNT was the best for explosive systems based on 2,4,6,8,10,12-hexanitro-1,4,6,8,10,12-hexaazaisowurtzitane (HNIW), 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) and guanylurea dinitramide (GUDN). The present article also presents data for the mechanical sensitivity of these explosives and their calculated detonation characteristics. The composite explosive based on HMX with 1-methyl-3-nitro-1,2,4-triazole has a calculated detonation velocity the same as HMX with TNT, but the sensitivity of HMX/TNT is 1.3-1.7 times higher.
    Źródło:
    Central European Journal of Energetic Materials; 2020, 17, 3; 344-361
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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