Shelf Life Predication of a Single -Base Propellant by Differential Scanning Calorimetry and Combined Kinetic Analysis

Determinations of lifetime for propellants require exact evaluation of thermal decomposition kinetic parameters. Thermal analysis is one of the tools for investigation of thermal decomposition reaction and its kinetic parameters. In this article, thermal decomposition process for a single-base propellant is investigated under 1, 2 and 3 K/min heating rates. Then by using Friedman isoconversionalmodel free method, average activation energy is determined about 185 kJ/mol. In continuous by using Ma’lek combined kinetic analysis and plotting master curves, kinetic model (f(α)) and pre-exponential factor (A) are determined. Results are: f (α) = (1-α) 2.2, A=2.75×10 s-1. Finally predicted lifetime for 250C and 5% degree of conversion are about 22.4 years.It is necessary to said that all calculation steps from start up to end are programming in MATLAB software.