Thermal Decomposition Behaviors and Burning Characteristics of Ammonium Nitrate/Polytetrahydrofuran/Glycerin–based Composite Propellants Supplemented with MnO2 and Fe2O3

Although a polytetrahydrofuran (PTHF) blend with added glycerin as a crosslinking modifier is an effective binder for improving the performance of a propellant, a burning catalyst is required for the combustion of the ammonium nitrate (AN)/PTHF/glycerin propellant. MnO2 and Fe2O3 are useful burning...

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Bibliographic Details
Published in:Propellants, explosives, pyrotechnics explosives, pyrotechnics, 2017-06, Vol.42 (6), p.665-670
Main Author: Kohga, Makoto
Format: Article
Language:English
Subjects:
Ammonium nitrate
Burning catalyst
Burning characteristics
Burning rate
Catalysts
Combustion
Composite propellants
Crosslinking
Decomposition
Iron oxides
Manganese oxides
Polytetrahydrofuran
Thermal decomposition
Thermal decomposition behavior
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Summary:Although a polytetrahydrofuran (PTHF) blend with added glycerin as a crosslinking modifier is an effective binder for improving the performance of a propellant, a burning catalyst is required for the combustion of the ammonium nitrate (AN)/PTHF/glycerin propellant. MnO2 and Fe2O3 are useful burning catalysts for AN‐based propellants. The thermal decomposition behaviors of the AN/PTHF/glycerin propellant supplemented with MnO2 and Fe2O3 catalysts, and the catalytic effect of these catalysts on the burning characteristics was investigated in this study. The thermal decomposition behaviors of these propellants depended on the kind of catalyst used. The propellants containing MnO2 burned above 4 MPa, while those containing Fe2O3 burned above 0.5 MPa. The burning rate increased in the order, (AN/PTHF/Fe2O3)
ISSN:0721-3115
1521-4087
DOI:10.1002/prep.201700014