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Wyświetlanie 1-7 z 7
Tytuł:
Compatibility Study of 2,6-Diamino-3,5-dinitropyridine-1-oxide with Some Energetic Materials
Autorzy:
Li, X.
Wang, B.-L,
Lin, Q.-H.
Powiązania:
https://bibliotekanauki.pl/articles/358871.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
compatibility
energetic materials
ANPyO
Opis:
For the application of 2,6-diamino-3,5-dinitropyridine-1-oxide (ANPyO) in composite explosives, the compatibility of ANPyO with some energetic materials was studied by the use of differential scanning calorimetry (DSC), where the energetic materials were cyclotrimethylenetrinitramine (RDX), cyclotetramethylenetetranitramine (HMX), 3,4-dinitrofurazanfuroxan (DNTF), hexanitrohexazaisowurtzitane (CL-20), 2,4,6-trinitrotoluene (TNT), 2,4,6-triamino-1,3,5-trinitrobenzene (TATB), 3-nitro-1,2,4-triazol-5-one (NTO), 2,6-diamino-3,5-dinitropyrazine-1-oxide (LLM-105), 5-amino-1H-tetrazole nitrate (5-ATEZN), ammonium perchlorate (AP), potassium perchlorate (KP), aluminum powder (Al), boron powder (B), magnesium hydride (MgH2) and magnesium borohydride (Mg(BH4)2). The results showed that the binary systems of ANPyO/CL-20, ANPyO/NTO, ANPyO/5-ATEZN, ANPyO/Al, ANPyO/B, ANPyO/MgH2 and ANPyO/Mg(BH4)2 are compatible, and that the systems of ANPyO with RDX, LLM-105, HMX, AP and KP are sensitive, and with DNTF, TNT and TATB are incompatible.
Źródło:
Central European Journal of Energetic Materials; 2016, 13, 4; 978-988
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Coated Ammonium Dinitramide on the Properties of Nitrate-ester Plasticized Polyether Solid Rocket Propellants
Autorzy:
Pang, W. Q.
Li, J. Q.
DeLuca, L. T.
Ke, W.
Fu, X. L.
Zhong, F. X.
Li, H.
Ji, Y. P.
Powiązania:
https://bibliotekanauki.pl/articles/358292.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
energetic materials
NEPE composite solid propellants
ADN
hazardous properties
combustion characteristics
Opis:
Several industrial and research types of nitrate-ester plasticized polyether (NEPE) solid propellants were experimentally analyzed. In general, their compositions differed in the mass fraction of ammonium dinitramide (ADN), which was used as a promising highly energetic filler, as an alternative to ammonium perchlorate (AP). ADN exhibits high performance, low signature and non-polluting characteristics. The propellant composition without ADN, but with AP, was used as the reference. The microstructure and granularity distribution of the uncoated and coated ADN particles were experimentally analyzed. It was found that uncoated ADN particles exhibited irregular shape, while the ADN particles after coating are spherical. Because of their irregular shape, uncoated ADN particles caused inferior processability of the propellant slurry when added to the propellant formulation. Consequently, the NEPE propellants with coated ADN were studied in further detail. The rheological properties, energetic properties, mechanical sensitivities and combustion properties (burning rate and pressure exponent) of the NEPE propellants with coated ADN were studied and compared with the reference NEPE propellant. The addition of ADN particles to the propellant formulations increased the standard theoretical specific impulse and heat of explosion of the propellants, while decreasing the density. The propellants containing ADN particles were much more sensitive to impact and friction compared to the reference sample. Moreover, increasing the ADN mass fraction in the propellant formulation can significantly affect the combustion behaviour and increase the burning rate and pressure exponent compared to of the reference formulation. However it appears that ADN is a very promising candidate as a new energetic material in compositions of NEPE propellants, although several important questions concerning ADN’s suitability, especially in the context of its sensitivity to friction and impact, remain to be answered.
Źródło:
Central European Journal of Energetic Materials; 2018, 15, 4; 590-609
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Polymeric Binders on the RDX-based Explosive Response Character under Slow Cook-off Conditions
Autorzy:
Yan, X.
Li, X. D.
Zhang, Y. R.
Liu, L.
Zhang, X. M.
Tan, Y. X.
Wang, H.
Wang, X. Q.
Powiązania:
https://bibliotekanauki.pl/articles/358419.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
RDX-based explosive
slow cook-off experiment
binder content
binder type
Opis:
Due to safety requirements, insensitive behaviour under slow thermal heating (cook-off) conditions is a desirable behaviour for today’s munitions. In this paper a cook-off device is designed to test two groups of RDX-based PBX explosives. In the first group the binder type was varied and in the second group the binder content of the RDX-based explosive was changed. Eleven samples were examined in order to evaluate the influence of four different binders and seven different binder contents on the shell deformation and the degree of the involved reaction. The test results showed that the degree of the reaction can be improved by changing the binder content, but not by the binder type. This phenomenon was explained by the thermal-conduction theory.
Źródło:
Central European Journal of Energetic Materials; 2018, 15, 2; 339-350
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Reinforcement of the TNT System by a Newly-designed GAP-based Polyurethane-Urea: a Molecular Simulation Investigation
Autorzy:
Qian, W.
Shu, Y.
Ma, Q.
Li, H.
Wang, S.
Chen, X.
Powiązania:
https://bibliotekanauki.pl/articles/358512.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
TNT
GAP
polyurethane-urea
inter-molecular interaction
mechanical properties
Opis:
A glycidyl azide (GAP)-based polyurethane-urea (PUU) modifier used in the 1,3,5-trinitrotoluene (TNT)-based composite explosive was investigated by molecular simulation. Inter-molecular interactions were investigated using quantum chemistry calculation on the dimer of TNT and GAP-PUU, and attractive forces were found between the two molecules. The cohesive energy densities and the solubility parameters were obtained through molecular dynamics simulations combined with thermodynamic calculations on the TNT and GAP-PUU amorphous cell models, and the miscibility of the modifier in molten TNT was predicted to be good. The interaction energies and the mechanical properties were then obtained by molecular simulations and mechanical calculations on the solid-phase models of the GAP-PUU with TNT along three crystalline directions, and an improvement in the mechanical properties was predicted.
Źródło:
Central European Journal of Energetic Materials; 2016, 13, 2; 411-426
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Thermal Behaviour of CL-20, Potassium Perchlorate, Lithium Perchlorate and Their Admixtures by DSC and TG
Autorzy:
Zhang, J.-J.
Guo, X.-J.
Jiao, Q.-J.
Zhang, H.-L.
Li, H.
Powiązania:
https://bibliotekanauki.pl/articles/358770.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
CL-20
potassium perchlorate
lithium perchlorate
thermal stability
phase transition
Opis:
The thermal decomposition characteristics of CL-20, potassium perchlorate (KP), lithium perchlorate (LP), a CL-20/KP mixture, and a CL-20/LP mixture were studied using thermogravimetry-differential scanning calorimetry (TG-DSC). The DSC curves for KP exhibited three endothermic peaks and one exothermic peak. The first two endothermic peaks correspond to the rhombic-cubic transition and the fusion of KP, respectively, the third indicates the fusion of KCl, while the exothermic peak is attributed to the decomposition of KP. The DSC curves obtained from LP showed four endothermic peaks and one exothermic peak. The first two endothermic peaks indicate the loss of adsorbed water and water of crystallization, while the third and fourth are associated with the fusion of LP and LiCl, respectively; the exothermic peak is due to the decomposition of LP. The presence of KP had little effect on the thermal decomposition of CL-20 while the addition of LP increased the temperature at which CL-20 exhibits an exothermic peak. In addition, the thermal decomposition of LP appeared to be catalyzed by the presence of CL-20.
Źródło:
Central European Journal of Energetic Materials; 2018, 15, 1; 115-130
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Microstructural Evolution in HMX Based Plastic-bonded Explosive During Heating and Cooling Process: an in situ Small-angle Scattering Study
Autorzy:
Yan, G.
Tian, Q.
Liu, J.
Fan, Z.
Sun, G.
Zhang, C.
Wang, Y.
Chen, B.
Gong, J.
Zhou, X.
Yang, Z.
Nie, F.
Li, J.
Li, X.
Powiązania:
https://bibliotekanauki.pl/articles/358618.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
SANS
SAXS
HMX-PBX
thermal damages
phase transition
Opis:
The thermal damage in octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) based plastic-bonded explosive (PBX) was investigated using in situ small-angle neutron and X-ray scattering techniques. The microstructural evolution was quantitatively characterized by the model fitting parameters of total interfacial surface area (Sv) and void volume distribution. The Sv of HMX-PBX decreased markedly above 100 °C, indicating the movement of binder into the voids. After subsequent cooling to room temperature, the scattering intensity increased significantly with increasing storage time, and a new population of voids with average diameter of 20 nm was observed, accompanied by the gradual phase transition of HMX from δ- to β-phase. The experimental results implied that serious damage within the HMX-PBX was developed during storage after heating.
Źródło:
Central European Journal of Energetic Materials; 2016, 13, 4; 916-926
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermally induced damage in hexanitrohexaazaisowurtzitane
Autorzy:
Tian, Q.
Yan, G.
Sun, G.
Huang, C.
Xie, L.
Chen, B.
Huang, M.
Li, H.
Liu, X.
Wang, J.
Powiązania:
https://bibliotekanauki.pl/articles/358735.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
CL-20
SAXS
AFM
thermal effects
voids
Opis:
The evolution of the microstructure of hexanitrohexaazaisowurtzitane (CL-20) after a thermal stimulus plays a key role in the performance of CL-20. In the current work, microstructural variations of CL-20 caused by thermal treatment were investigated by X-ray diffraction, in situ variable-temperature optical microscopy, atom force microscopy, and small-angle X-ray scattering. A wave-like process, an abrupt volume expansion, movement, and fragmentation of CL-20 particles during phase transition were observed. After the phase transition (160 °C) the CL-20 sample acquired a very rough surface with numerous dimple depressions, and during the thermal decomposition stage (200 °C) a large number of voids were produced in both the bulk and the surface of the CL-20.
Źródło:
Central European Journal of Energetic Materials; 2013, 10, 3; 359-369
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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