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The Kinetic Parameters and Parameter Effect Factors Calculation of multicomponent energetic materials decomposition reaction from a single differential thermal analysis curve
Author(s) -
Luo KuoMing
Publication year - 1996
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19960210410
Subject(s) - inflection point , kinetic energy , order of reaction , differential thermal analysis , thermodynamics , chemistry , activation energy , thermal decomposition , kinetics , reaction rate constant , mathematics , physics , organic chemistry , geometry , quantum mechanics , diffraction , optics
The kinetic parameter of energetic materials with four components, i.e. lead thiocyanate, antimony sulfide, potassium chlorate, and trinitrotoluene, (PSKT), was analyzed with differential thermal analysis (DTA) technique. Kinetic parameter equations were derived for estimating a general nth‐order decomposition reaction from a single DTA curve. Three categories, for n < 1, n = 1, and n ≠ 1 were derived. Three kinetic parameters, namely, activation energy E, reaction order n, and pre‐exponential factor A can be calculated directly without any iteration from the characteristic temperatures T o , T il , T m , and T e that are the decomposition starting point, first inflection point, peak maximum point and end point on the DTA curve, respectively. The stability and compatibility of PSKT energetic material can be judged from experimental characteristic temperatures and calculated kinetic parameters. The effect factors of characteristic temperature and kinetic parameters were evaluated by means of Yates' algorithm.