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Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Kinetic modelling of the stabilizer consumption and of the consecutive products of the stabilizer in a gun propellant
 Propellants, explosives, pyrotechnics 22 (1997), No.3, pp.125136 ISSN: 03407462 ISSN: 07213115 ISSN: 15214087 

 English 
 Journal Article 
 Fraunhofer ICT () 
Abstract
Diphenylamine (DPA) is used for the stabilization of solid propellants based on nitrocellulose. It reacts with the autocatalytically acting decompn. product of nitrocellulose and forms consecutive products, which also stabilize. The kinetics of these stabilizing reactions are described by 4 reaction models. With respect to DPA and the DPA consecutive products the models have 1, 2, and 4 steps. The 4step model contains the DPA consecutive products up to trinitroDPA. By approxns. an anal. equation for the stabilizer decrease was derived, which describes the stabilizer consumption very well. The other equation systems were integrated numerically by a RungeKutta procedure and their reaction rate consts. were obtained by a nonlinear least squares fit parameter calcn. This allows an evaluation of the reaction kinetic models. Relative reactivities of the DPA consecutive products with respect to DPA are calculable with the obtained reaction rate consts. and an effective DPA concn. can be e stablished. The different reactivities of mixed stabilizers as Nmethylpnitroanaline (MNA) and 2NO2DPA can be described with the presented method of modeling.