摘要
Abstract
In order to understand comprehensively the thermal decomposition behavior of dihydrazinium salts of bis(5-amino-1,2,3,4-tetrazolium) (Hy2BTA),thermal decomposition curves at different heating rates and the types of decomposition gas products and their content change of the compound were measured by combined method of thermogravimetry-differential scanning calorimetry-Fourier transform infrared spectroscopy-mass spectrometry (TG-DSC-FTIR-MS).Results show that the thermal decomposition of Hy2 BTA includes two endothermic processes and two successive exothermic processes with temperature increasing,corresponding to the broken of first ionic bond in Hy2BTA with the expulsion of NH2NH2,the tetrazole rings began to release N2 with the rupture of -N-N-during the break of the second ionic bond in Hy2BTA,gas products N2,HN3,NH3 and HCN were generated by the cleavage of tetrazole rings and the further decomposition of residual skeleton,in addition,the polymerization of decomposition products and pyrolysis of residual skeleton can be occurred which produce polymer containing nitrogen and HN3,N2 and NH3,respectively.The apparent activation energies of four processes calculated by Kissinger's method are 115.12 kJ · mol-1,193.75 kJ · mol-1,334.16 kJ · mol-1 and 243.40 kJ · mol-1 respectively.关键词
二(5-胺基-1,2,3,4-四唑)二肼盐/TG-DSC-FTIR-MS联用技术/热分解/气体产物Key words
dihydrazinium salt of bis(5-amino-1,2,3,4-tetrazolium)/TG-DSC-FTIR-Ms coupled technique/thermal decomposition/gas products分类
社会科学
