Study on the effect of double-component stabilizer on the thermal decomposition properties of nitrocellulose
Nitrocellulose is an energetic material widely used in military and civilian fields,with superior working performance,but its easy spontaneous combustion limits its further application.In this study,based on the traditional one-component stabilizer,a two-component stabilizer mode of"organic matter+inorganic salt"was proposed,and the four samples formed by the mixture of nitrocellulose and two-component stabilizer were subjected to differential scanning calorimetry(DSC)at a series of constant temperatures of 150,152,154 and 156 ℃,and compared with the pure nitrocellulose samples.The kinetic parameters such as apparent activation energy,pre-index factor and reaction mechanism function of the samples were calculated by the high-order Vyazovkin method suitable for isothermal testing.The results of the test and analysis show that the stabilizing effect of the two-component stabilizer on nitrocellulose is manifested in the reduction of the reaction rate and the reduction of heat release per unit mass,and does not affect the reaction mechanism of nitrocellulose itself.Among the four two-component stabilizers,the combination of TPA+sodium carbonate has the most obvious stabilizing effect.