The New Descriptors Effective on the Detonation Performance of Aluminized Explosives

Abstract

The relationship between detonation velocity and the elemental composition of components of aluminized explosives are assessed through quantitative structure‐property relationship (QSPR). Here, two new reliable, simple models are proposed for estimating aluminized explosives detonation heat and velocity based on molecular structure by applying QSPR. In this methodology it is assumed that these two detonation parameters can be presented as a function of elemental composition, density and several structural parameters. This new correlation of heat detonation has determination coefficient of 0.930, root mean square deviation (RMSD) of 324.4 and average absolute deviation (AAD) of 446kJ·kg–1 for 36 aluminized explosives with different molecular structures as the training set. The predictive power of this new correlation is checked through a cross validation method. Statistical parameters reveal relatively good result for this correlation. Also, the determination coefficient of detonation velocity for the other new model is 0.960 and it has 151.1 (RMSD) and 107.9 m·s–1 (AAD) for 42 aluminized explosives with different molecular structures as training set. Reliability and validity of new correlation investigated (Q2Ext = 0.948, Q2LOO = 0.938, and Q2LMO = 0.937). The good ability of this new model for prediction detonation velocity of aluminized explosives are confirmed.

An improved correlation for reliable assessment of the detonation performance of non‐ideal explosives containing metals and the other solid particulates

“…[11] Moreover the structural parameters of aluminized explosives have been used for the construction of a new semi-empirical model. [12] Some simple semi-empirical models based on the partial consumption of Al and AN have also been proposed for predicting their performance. [13] Reliable estimation of the equilibrium composition of the products is important for the assessment of the detonation velocity of energetic compounds.…”

“…Recently, the laser‐induced breakdown spectroscopy was employed to measure the performance of different non‐ideal explosives [11] . Moreover the structural parameters of aluminized explosives have been used for the construction of a new semi‐empirical model [12] . Some simple semi‐empirical models based on the partial consumption of Al and AN have also been proposed for predicting their performance [13]…”