Physico-Chemical Studies of the Evaluation of some Stabilizers for Solid Rocket Propellants

Abstract

The present work deals with the study of effect of stabilizer ratio on stability of solid rocket propellant by using different techniques. Several Double-Base Propellant samples have been prepared using different ratios of Centralite 1 (as Stabilizer). Traditional methods for study of Stability are carried out after manufacture and after aging. The results are consistent with the Control Laboratory of Bofors. HPLC is used to determine the composition of DBP samples after manufacture and after aging. The mechanical properties of solid rocket propellants are very important for the good functioning of rocket motors. Compression test, as Mechanical analysis, is applied at two different temperatures (25 and 50°C). Mechanical properties are improved with the increase of stabilizer ratio but until certain amount of stabilizer ratio. Ballistic tests were carried out (at -20 and +50°C), all the ballistic properties decrease with the increase of stabilizer ratio. Thermal analysis methods for study of thermal stability are carried out. The TGA and DTG were carried out under Non-isothermal and Isothermal conditions, the thermal stability are increasing by increase the ratio of stabilizer until certain ratio of stabilizer. DTA results show that, the increase of Stabilizer ratio (Cl) is associated with a shift of decomposition temperature, and these results are consistent with the results of non­ isothermal TGA.