- Tytuł:
- Effects of Metal Oxides on the Thermal Decomposition Kinetics and Mechanisms of HAN/PVA Based Propellants
- Autorzy:
-
Hu, Song-qi
Liu, Xue-li
Liu, Lin-Lin
Kang, Bo
Zhang, Yan - Powiązania:
- https://bibliotekanauki.pl/articles/27787991.pdf
- Data publikacji:
- 2021
- Wydawca:
- Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
- Tematy:
-
HAN/PVA-based propellant
metal oxides
catalytic behaviour
kinetic parameters - Opis:
- The thermal decomposition processes of HAN/PVA-based propellants have been investigated using a simultaneous thermogravimetric analysis (TGA) – differential scanning calorimetry (DSC), coupled with Fourier-Transform Infrared Spectroscopy (FTIR) and Mass Spectrometry (MS) system. The activation energy (Ea), pre-exponential factor A and reaction mechanism function f(α) of the decomposition processes have been determined by non-isothermal and Malek methods. The results showed that the decomposition process of an HAN/PVA sample occurs mainly in the temperature range 202.2~220.1 °C, with a mass loss, heat release and Ea of about 84.8%, 1474.18 and 88.76 kJ·mol–1, respectively. Of the seven metal oxides studied as catalysts, Al2O3, V2O5 and Fe2O3 have significant catalytic effects on an HAN/PVA-based propellant, in lowering the decomposition temperature, with Ea changing from 88.8 to 83.7, 85.6 and 113.6 kJ·mol–1, respectively. The f(α) of both HAN/PVA and HAN/PVA/Al2O3 samples can be expressed as f(α) = (1 – α)2, whereas f(α) = α or f(α) = α/2 fit well for the HAN/PVA/V2O5 and HAN/PVA/Fe2O3 samples.
- Źródło:
-
Central European Journal of Energetic Materials; 2021, 18, 3; 322-338
1733-7178 - Pojawia się w:
- Central European Journal of Energetic Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł