Journal ArticleDOI
Catalytic effect of lead oxide nano- and microparticles on thermal decomposition kinetics of energetic compositions containing TEGDN/NC/DAG
TLDR
In this paper, the catalytic effect of lead oxide nano-and microparticles (PbO) on the thermal behavior and decomposition kinetics of energetic formulations composed of nitrocellulose (NC), triethyleneglycol dinitrate (TEGDN) and diaminoglyoxime (DAG) was investigated by simultaneous thermogravimetric analysis and differential scanning calorimetry.Abstract:
The catalytic effect of lead oxide nano- and microparticles (PbO) on the thermal behavior and decomposition kinetics of energetic formulations composed of nitrocellulose (NC), triethyleneglycol dinitrate (TEGDN) and diaminoglyoxime (DAG) was investigated by simultaneous thermogravimetric analysis and differential scanning calorimetry. The results show that lead oxide nano- and microparticles could significantly alter thermal pattern of the studied energetic compositions. The effect of lead oxide content on thermal behavior of energetic compositions was also studied, and the results revealed that addition of different amounts of lead oxide caused to shift in the DSC peaks. Moreover, the catalyst decreases activation energy of the decomposition stage of energetic composition at about 20–40 kJ mol−1. However, the catalyst enhances decomposition temperature of TEGDN/NC/DAG energetic compositions. By the aid of DSC data resulted by non-isothermal methods, the thermokinetic parameters such as activation energy (E
a), frequency factor (A), the critical ignition temperature of thermal explosion, the self-accelerating decomposition temperature (T
SADT) and also thermodynamic parameters of the studied energetic compositions were calculated and compared.read more
Citations
More filters
Journal ArticleDOI
Thermal behavior and decomposition kinetics of composite solid propellants in the presence of amide burning rate suppressants
TL;DR: In this paper, the effect of burning rate suppressants on the thermal behavior and decomposition kinetics of composite solid propellants was investigated, and it was found that oxamide played an inhibition effect on both stages, whereas the ADA acts as a catalyst in the first stage and as coolant in the second one.
Journal ArticleDOI
Catalytic effect of green CuO nanoparticles on the thermal decomposition kinetics of ammonium perchlorate
Journal ArticleDOI
Electrospinning and thermal characterization of nitrocellulose nanofibers containing a composite of diaminofurazan, aluminum nano-powder and iron oxide nanoparticles
Seied Mahdi Pourmortazavi,Iraj Kohsari,Hamed Zandavar,Masoumeh Foroutan Koudehi,Somayeh Mirsadeghi +4 more
TL;DR: In this paper, two non-isothermal kinetics analysis methods (i.e., Kissinger and Starink) were used to predict kinetic parameters of thermal decomposition, such as activation energy and frequency factor; as well as, thermodynamic parameters (ΔG#, ΔH#, and ΔS#).
Journal ArticleDOI
Effect of stabilizers and nitrogen content on thermal properties of nitrocellulose granules
Katarzyna Cieślak,Katarzyna Gańczyk-Specjalska,Katarzyna Drożdżewska-Szymańska,Michał Uszyński +3 more
TL;DR: In this article, the physicochemical and thermal properties of granules with various stabilizers and stabilizers (centralite I, centralite II, akardite II and triphenylamine) were obtained in laboratory scale, and the study of their physicochemical properties was conducted.
Journal ArticleDOI
Thermal behavior and thermokinetic of double-base propellant catalyzed with magnesium oxide nanoparticles
TL;DR: In this paper, the effect of magnesium oxide nanoparticles (nano-MgO) on the thermal behavior and decomposition reaction kinetic of the double-base propellant formulation was investigated in order to model the thermal degradation process.
References
More filters
Journal ArticleDOI
The determination of activation energy from linear heating rate experiments: a comparison of the accuracy of isoconversion methods
TL;DR: In this article, a classification of model-free isoconversion methods for the calculation of activation energies of thermally activated reactions is proposed, by deriving expressions for the main sources of error which includes the inaccuracy in reaction rate measurement, approximations for the temperature integral and inaccuracies in determination of temperature for equivalent fraction transformed.
Journal ArticleDOI
The estimation of critical temperatures of thermal explosion for energetic materials using non-isothermal DSC
TL;DR: In this article, a method for estimating critical temperatures (Tb) of thermal explosion for energetic materials is derived from Semenov's thermal explosion theory and the non-isothermal kinetic equation dα/dt = Af(α)e−E/RT using reasonable hypotheses.
Journal ArticleDOI
Physical and electrochemical properties of ionic liquids 1-ethyl-3-methylimidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium trifluoromethanesulfonate and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide
Mojtaba Shamsipur,Ali Akbar Miran Beigi,Ali Akbar Miran Beigi,Mohammad Teymouri,Sayed Mahdi Pourmortazavi,Mohsen Irandoust +5 more
TL;DR: In this article, the ionic liquids 1-ethyl-3-methylimidazolium tetrafluoroborate trifluoromethanesulfonate and 1-butyl-1-methylpyrrolidinium bis(trifluorsulfonyl)imide were prepared and several properties including viscosities, thermal stability, surface tension, refractive index, pH and density were investigated as a function of temperature.
Journal ArticleDOI
Effect of nitrate content on thermal decomposition of nitrocellulose.
Seied Mahdi Pourmortazavi,S.G. Hosseini,Mehdi Rahimi-Nasrabadi,Seiedeh Somayyeh Hajimirsadeghi,H. Momenian +4 more
TL;DR: The thermal stability of four nitrocellulose samples containing various amount of nitrate groups was determined by differential scanning calorimetery (DSC) and simultaneous thermogravimetery-differential thermal analysis (TG-DTA) techniques, and showed that, as the heating rate was increased, decomposition temperature of the compound was increased.