The thermal behavior and kinetic parameters of the decomposition reaction of triethylene glycol dinitrate (TEGDN) in a temperature-programmed mode at different pressures (0.1, 2, 4 and 6 MPa) have been investigated by...The thermal behavior and kinetic parameters of the decomposition reaction of triethylene glycol dinitrate (TEGDN) in a temperature-programmed mode at different pressures (0.1, 2, 4 and 6 MPa) have been investigated by means of DSC and TG-DTG. The results show that the properties of the thermal decomposition of TEGDN are affected by the change of pressure, and the kinetic model function, the apparent activation energy Ea and pre-exponential factor A of this reaction are []122(1)ln(1)aa---, 106.54 kJ昺ol-1 and 109.17 s-1 at 0.1 MPa, and 120.82 kJ昺ol-1 and 1010.56 s-1 at 2 MPa, respectively. The critical temperature of thermal explosion of TEGDN obtained by the values Teo and Tpo of the onset temperature Te and the peak temperature TP when the heat-ing rate tends to zero are 191.05, 209.86 ℃ at 0.1 MPa, 207.59 and 221.65 ℃ at 2 MPa, respectively.展开更多
基金Project supported by the Science and Technology Foundation of the National Defense Key Laboratory of Propellant and Explosive Combustion of China (No. 51455030101ZS3505).
文摘The thermal behavior and kinetic parameters of the decomposition reaction of triethylene glycol dinitrate (TEGDN) in a temperature-programmed mode at different pressures (0.1, 2, 4 and 6 MPa) have been investigated by means of DSC and TG-DTG. The results show that the properties of the thermal decomposition of TEGDN are affected by the change of pressure, and the kinetic model function, the apparent activation energy Ea and pre-exponential factor A of this reaction are []122(1)ln(1)aa---, 106.54 kJ昺ol-1 and 109.17 s-1 at 0.1 MPa, and 120.82 kJ昺ol-1 and 1010.56 s-1 at 2 MPa, respectively. The critical temperature of thermal explosion of TEGDN obtained by the values Teo and Tpo of the onset temperature Te and the peak temperature TP when the heat-ing rate tends to zero are 191.05, 209.86 ℃ at 0.1 MPa, 207.59 and 221.65 ℃ at 2 MPa, respectively.
