A study on thermal behavior of energetic material using numerical and experimental investigation

Abstract

The thermal behavior of energetic materials has various aspects such as slow decomposition reactions, fast explosion phenomenon, and very rapid detonation phenomenon. All these thermal behaviors of energetic material are basically based on thermal chemical reactions. Therefore, in order to numerically analyze the thermal behavior of high-energy materials, it is essential to construct an accurate chemical reaction rate equation experimentally. In this study, we have developed a chemical kinetic equation for unknown energetic materials by using the calorimetric method Differential Scanning Calorimetry (DSC). In addition, the research for explosion, detonation, and aging effects of energetic materials are numerically investigated using the established chemical reaction rate equation.<br/> Firstly, the kinetic analysis of a heavily aluminized cyclotrimethylene-trinitramine (RDX) using Differential Scanning Calorimetry (DSC) is conducted. The Friedman isoconversional method is applied to DSC experimental data and AKTS software is used for the analysis. The pre-exponential factor and activation energy are extracted as a function of product mass fraction. The extracted kinetic scheme does not assume multiple chemical steps to describe the complex response of energetic materials