Study on Thermal Stability and Decomposition Kinetics of Bis (2,2‐Dinitropropyl) Fumarate (BDNPF) as a Melt Cast Explosive by Model‐Free Methods

2019 ◽  
Vol 44 (11) ◽  
pp. 1446-1449 ◽  
Author(s):  
Fatemeh Abrishami ◽  
Mostafa Chizari ◽  
Narges Zohari ◽  
Seyed Ali Pourmosavi
Keyword(s):  
Thermal Stability ◽  
Decomposition Kinetics ◽  
Model Free ◽  
Kinetics Of

scholarly journals Thermal Stability and Decomposition Kinetics of 1-Alkyl-2,3-Dimethylimidazolium Nitrate Ionic Liquids: TGA and DFT Study

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2560
Author(s):  
Jianwen Meng ◽  
Yong Pan ◽  
Fan Yang ◽  
Yanjun Wang ◽  
Zhongyu Zheng ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Density Functional Theory ◽  
Ionic Liquids ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Nitrogen Atmosphere ◽  
Decomposition Kinetics ◽  
Heating Rates ◽  
Functional Theory ◽  
Kinetics Of

The thermal stability and decomposition kinetics analysis of 1-alkyl-2,3-dimethylimidazole nitrate ionic liquids with different alkyl chains (ethyl, butyl, hexyl, octyl and decyl) were investigated by using isothermal and nonisothermal thermogravimetric analysis combined with thermoanalytical kinetics calculations (Kissinger, Friedman and Flynn-Wall-Ozawa) and density functional theory (DFT) calculations. Isothermal experiments were performed in a nitrogen atmosphere at 240, 250, 260 and 270 °C. In addition, the nonisothermal experiments were carried out in nitrogen and air atmospheres from 30 to 600 °C with heating rates of 5, 10, 15, 20 and 25 °C/min. The results of two heating modes, three activation energy calculations and density functional theory calculations consistently showed that the thermal stability of 1-alkyl-2,3-dimethylimidazolium nitrate ionic liquids decreases with the increasing length of the alkyl chain of the substituent on the cation, and then the thermal hazard increases. This study could provide some guidance for the safety design and use of imidazolium nitrate ionic liquids for engineering.

Thermal properties and thermal degradation kinetics of phenolic and wood flour-reinforced phenolic foams

2016 ◽  
Vol 51 (1) ◽  
pp. 125-138 ◽  
Author(s):  
JC Domínguez ◽  
B del Saz-Orozco ◽  
M Oliet ◽  
MV Alonso ◽  
F Rodriguez
Keyword(s):  
Thermal Stability ◽  
Thermal Degradation ◽  
Degradation Kinetics ◽  
Wood Flour ◽  
Activation Energies ◽  
Thermal Degradation Kinetics ◽  
Kinetic Methods ◽  
Model Free ◽  
Phenolic Foam ◽  
Kinetics Of

In the present work, the thermal stability, changes in chemical structure during thermal degradation, and the kinetics of thermal degradation of a phenolic foam were studied. An 8.5 wt% of Pinus radiata wood flour reinforcement was added to the phenolic foam. A commercial phenolic resol was used as the matrix for the foam. The wood flour-reinforced foam showed a structure similar to the phenolic foam according to the Fourier transform infrared spectroscopy results. The wood flour increased the thermal stability of the phenolic foam in the first stage of thermal degradation ( T 5%), decreased it in the second step ( T 25%), and negligibly influenced the final stage. The activation energies of the degradation processes of the studied materials were obtained by the Kissinger-Akahira-Sunose and Flynn-Wall-Ozawa model-free kinetic methods and a 2-Gaussian distributed activation energy model. The values of the activation energies obtained by the model-free kinetic methods for the first degradation stage of the phenolic foams were in a range between 110 and 170 kJ mol−1, whereas for the wood flour it was 162 kJ mol−1 for almost all of the conversion range of its main degradation stage. The applied models showed good fits for all the materials, and the activation energies calculated were in agreement with the values found in the literature.

The thermal stability and non-isothermal decomposition kinetics of a zinc ferrite precursor

1993 ◽  
Vol 228 ◽  
pp. 249-259 ◽  
Author(s):  
Oana Carp ◽  
E. Segal ◽  
Lummiţa Patron ◽  
Ruxandra Birjega ◽  
C. Craiu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Zinc Ferrite ◽  
Decomposition Kinetics ◽  
Isothermal Decomposition ◽  
Kinetics Of

Thermal stability and decomposition kinetics of NdNiO3-δ at 1 bar of O2

2021 ◽  
pp. 102663
Author(s):  
A.A. Bassou ◽  
P.J. Machado ◽  
M.M. Gomes ◽  
B. Manjunath ◽  
R. Vilarinho ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Decomposition Kinetics ◽  
Kinetics Of

Thermal Stability and Decomposition Kinetics of 1,3-Dimethyladamantane

2014 ◽  
Vol 28 (10) ◽  
pp. 6210-6220 ◽  
Author(s):  
Xiaomei Qin ◽  
Lei Yue ◽  
Jianzhou Wu ◽  
Yongsheng Guo ◽  
Li Xu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Decomposition Kinetics ◽  
Kinetics Of
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