Particle Design of Energetic Materials



University of Applied Sciences, Fachhochschule Nürnberg,
Mechanische Verfahrenstechnik/Particle Technology,
Wassertorstrasse 10, 90489 Nürnberg, Germany,
Fraunhofer Institut für Chemische Technologie (ICT)
Joseph-von-Fraunhofer-Straße 7, 76327 Pfinztal, Germany

Abstract: The crystal quality and the internal microstructure of crystals have
a great influence on the sensitivity of energetic materials. Besides, the particle size
and the particle size distribution are of great importance to the processing
technology of energetic materials. Particle properties can especially be influenced
by applying different crystallization techniques, such as cooling crystallization,
membrane crystallization, emulsion crystallization and others. The objective of
the investigations was to determine the interrelationship between the properties
of the gained crystals and the process parameters. Special attention was directed
to the qualitative and quantitative examination of crystal defects and their
dependence on the experimental conditions. Besides, the morphology and structure
of crystals were calculated by molecular modelling. The effect of crystal defects on
the sensitivity of the material was tested on different collectives of particles
having varying amount of crystal defects.

Keywords: product design, particle quality, crystallization, FOX 7, HMX, ADN