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Prediction of Life Times of Propellants ‐ improved kinetic description of the stabilizer consumption
Author(s) -
Bohn Manfred A.
Publication year - 1994
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.19940190510
Subject(s) - stabilizer (aeronautics) , thermodynamics , propellant , exponential function , kinetic energy , mathematics , chemistry , physics , mathematical analysis , organic chemistry , engineering , classical mechanics , mechanical engineering
An equation for the decrease of stabilizer content in propellants is given, which describes the measured consumption of stabilizers such as diphenylamine, 2‐nitrodiphenylamine, acardite II and ethylcentralite very well. The equation was obtained with a kinetic formulation for the stabilizer depletion, which combines the reactions of first and zero order. According to this model, the times up to a complete consumption of the stabilizer are finite(they are infinite if the decrease is purely exponential), and can be calculated with the reaction rate constants of the model. The prediction of the life times is considerably improved. This new equation allows a normalized representation of the stabilizer decrease, which can reveal mechanistic changes in the course of the reaction.