Decomposition kinetics and thermolysis products analyses of energetic diaminotriazole-substituted tetrazine structures

作者：Yan, Qi-Long^*; Liu, Lin-Lin; He, Wei; Luo, Chunjia; Shlomovich, Avital; Liu, Pei-Jin; Kong, Jie^*; Gozin, Michael^*

来源：Thermochimica Acta, 2018, 667: 19-26.

DOI：10.1016/j.tca.2018.04.010

• Thermal decomposition
• Kinetics
• Tetrazine
• Stability
• Gas products

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 degrees C, while it is 355.6 degrees C and 386.5 degrees 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 NH3.

• 出版日期2018-9-10
• 单位西北工业大学