Thermal Decomposition Kinetics of MDNT

ThermaI decomposition and kinetics of 1-methyl-3,5-dinitro-1,2,4-triazole(MDNT)were studied by using DSC and TG-DTG.Mass loss in two stages and corresponding temperature,reaction depth,final residual quantity were obtained by thermogravimetry(TG).The kinetic parameters were analyzed by means of Kissinger and Ozawa method,respectively,and the thermal analysis data and Satava-Sestak method were applied for the thermal decomposition research of MDNT.The results show that the thermal decomposition of MDNT has two steps.The first step of the thermal decomposition is controlled by the processes of phase boundary reaction,the apparent activation energy E is 99.96kJ·mol-1,the pre-exponential factor lnA is 20.19s-1.The second step of the thermal decomposition is controlled by the process of three dimensional diffusion,the apparent activation energy E is 116.10kJ·mol-1,the pre-exponential factor lnA is 22.15s-1.