Studies of The Thermal Decomposition, Non-isothermal Kinetic and Thermodynamic Properties of Amine Salt of 3-Nitro-1,2,4-triazol-5-one (NTO)

The salts of 3-Nitro-1,2,4-triazol-5-one (NTO) have received much attention in recent years due to their great application as energetic ballistic modifiers for solid propellants and gun propellant formulations. In this work, thermal behavior of four new amine salts of NTO among dimethyleguanidine, diethyleguanidine cyclohexamethylenetetramine and semicarbazide were studied under a non-isothermal condition by DSC and TG-DTG methods. The kinetic parameters (Arheniuse) were obtained from analysis of the DSC and TG curves by the Agrawal, Satava-Sestak and Ordinary-integral methods and the enthalpies of decomposition of the amine salts of NTO were calculated. The results in terms of activation energy showed that amine salts of NTO are thermally more unstable than NTO and show different thermal decomposition mechanisme.