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Decomposition kinetics and thermolysis products analyses of energetic diaminotriazole-substituted tetrazine structures.
- Source :
-
Thermochimica Acta . Sep2018, Vol. 667, p19-26. 8p. - Publication Year :
- 2018
-
Abstract
- Graphical abstract The Diaminotriazole group has great effect on the physical models and activation energies of the initial decomposition of tetrazine derivatives. Highlights • The heat flow behaviour of three insensitive and thermostable s -tetrazine derivatives was evaluated. • The mass loss properties of these compounds were compared with DSC results. • Their decomposition kinetic parameters and physical models were determined. • The gaseous products were analyzed with proposed initial thermolysis mechanisms. Abstract The thermal behaviour, decomposition kinetics and mechanisms of three diaminotriazole-substituted tetrazine compounds have been investigated using simultaneous DSC-TG and TG/MS techniques. It has been found that TBDM-2NB is much more stable than TBDM-NB and TBDM, where the latter decomposes in two steps with different kinetic parameters. The TBDM decomposes with peak temperature of 379.0 °C, while it is 355.6 °C and 386.5 °C for TBDM-NB and TBDM-2NB, respectively. The activation energy of the first step of TBDM is much higher (176.2 kJ mol−1) than the second step (102.3 kJ mol−1). The decomposition of TBDM-NB follows 2-d diffusion model, while it is a first order reaction model for TBDM and nucleation growth model for TBDM-2NB. The rearrangement of s-tetrazine ring is typical for thermal decomposition of the title compounds, which may undergo a homo-scission to produce N 2 and followed by production of NH 3. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00406031
- Volume :
- 667
- Database :
- Academic Search Index
- Journal :
- Thermochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 131883850
- Full Text :
- https://doi.org/10.1016/j.tca.2018.04.010