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Wyszukujesz frazę "Pyrotechnic mixtures" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Effects of Various Additives on the Characteristics of Bubbles Originating from the Combustion of Pyrotechnic Mixtures
Autorzy:
Ouyang, D.-H.
Duan, D.-L.
Zou, Y.-X
Powiązania:
https://bibliotekanauki.pl/articles/358784.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
additives
pyrotechnic mixtures
bubble
underwater combustion
Opis:
The bubbling behaviour originating from the combustion of pyrotechnic mixtures of KClO4/Mg-50%Al alloy, and with additives such as nitrocellulose (NC) and urotropine, were studied by high speed photography. The results revealed that with the addition of the additives the combustion pressure and the gas flow rates increased in the order KClO4/Mg-50%Al/NC (3) > KClO4/Mg-50%Al/urotropine (2) > KClO4/Mg-50%Al (1). Additionally, it is confirmed that the bubbling phenomena can be classified into various stages, i.e. single bubbling, pairing and single coalescence, double coalescence and so on.
Źródło:
Central European Journal of Energetic Materials; 2014, 11, 4; 603-611
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Different Binders on the Combustion Characteristics of Ba(NO3)2/Mg-containing Pyrotechnic Mixtures
Autorzy:
Ouyang, D.
Powiązania:
https://bibliotekanauki.pl/articles/358403.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
binders
pyrotechnic mixtures
luminous intensity
combustion characteristics
Opis:
The combustion characteristics of Ba(NO3)2/Mg with binders such as phenolic resin (PR) and nitrocellulose were studied experimentally using an IGA-140 non contact, far-infrared thermometer and transient intensity testing instrument. The results revealed that the burn temperature, luminous intensity and burn rate of the pyrotechnic mixtures with PR (1594.5 °C, 47235.6 cd, 12.5 mm/s) were all larger than the NC system (1432.6 °C, 3242.9 cd, 9.0 mm/s), which is due to differences in the decomposition progress of the two binders that led to substantial differences in the loss of reaction energy and the exothermic reaction between the phenolic resin and the oxidizer before the Mg-oxidizer reaction.
Źródło:
Central European Journal of Energetic Materials; 2013, 10, 2; 209-215
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Decomposition, Ignition and Kinetic Evaluation of Magnesium and Aluminium Fuelled Pyrotechnic Compositions
Autorzy:
Babar, Z.
Malik, A. Q.
Powiązania:
https://bibliotekanauki.pl/articles/358146.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
aluminium
magnesium
pyrotechnic mixtures
kinetic data
critical ignition temperature
Opis:
This paper describes the thermal, kinetic and ignition behaviour of three pyrotechnic mixtures comprising Al + Ba(NO3)2, Mg + NH4ClO4, and Mg + KMnO4. Aluminium (Al) and magnesium (Mg) are metal fuels whereas barium nitrate, potassium permanganate and ammonium perchlorate are oxidants. The main objective of the paper is to assess the safety and relative reactivity of these pyrotechnic combinations. The experimental results indicate that aluminium powder reacts exothermically with the decomposition products of barium nitrate near 601 °C. A similar kind of exothermic reaction takes place between magnesium powder and ammonium perchlorate at 338 °C. Heat flow data obtained from multiple heating rate experiments were used to calculate the kinetic parameters, such as activation energy, reaction rate constant and frequency factor, using the Kissinger method. Critical ignition temperatures of all three compositions have been estimated in order to evaluate their thermal stability. The results show that all of these compositions are thermally stable and their relative reactivity decreases in the following order: Mg + NH4ClO4 > Mg + KMnO4 > Al + Ba(NO3)2.
Źródło:
Central European Journal of Energetic Materials; 2015, 12, 3; 579-592
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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