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Optimization of propellant binders - part two: Macroscopic investigation of the mechanical properties of polymers

: Niehaus, M.; Greeb, O.


Propellants, explosives, pyrotechnics 29 (2004), No.6, pp.333-338
ISSN: 0340-7462
ISSN: 0721-3115
ISSN: 1521-4087
Journal Article
Fraunhofer ICT ()

The development of new propellant binder systems requires the thermodynamic calculation of physico-chemical data as well as the adaption of the mechanical properties in order to achieve a reliable innerballistic profile of the resulting propellant. Therefore, this study focuses on the mechanical properties of a binder system comprising GAP, NC as well as the energetic plasticizer DNDA and the curing agent Desmodur N100. By applying statistical methods, the mechanical properties of the binder can be predicted as a function of its composition. A macroscopic analysis of the interrelations between the E-modulus, the ultimate tensile strength as well as the elongation at break and the specific deformation energy lead to the creation of failure master curves, which can be used as a rule of thumb criterion for the formulation of propellant binders.