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Preparation and characterization of foamed propellants using supercritical fluids

: Kröber, Hartmut

Volltext urn:nbn:de:0011-n-3498622 (699 KByte PDF)
MD5 Fingerprint: 16ef2f0bad543921006a6bf5a0157cd3
Erstellt am: 30.7.2015

Fraunhofer-Institut für Chemische Technologie -ICT-, Pfinztal:
Energetic materials - performance, safety and system applications : 46th International Annual Conference of the Fraunhofer ICT, June 23 - 26, 2015, Karlsruhe, Germany
Pfinztal: Fraunhofer ICT, 2015
ISSN: 2194-4903
Fraunhofer-Institut für Chemische Technologie (International Annual Conference) <46, 2015, Karlsruhe>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ICT ()

Foaming behaviours of nitrocellulose based propellants with RDX and DNDA were investigated in a batch foaming process using supercritical carbon dioxide as physical blowing agent. SEM pictures show the influence of saturation conditions (pressure and temperature) on the porosity and internal structure of the propellants. An increasing solubility of carbon dioxide in the polymeric matrix of the propellants leads to more porous powders. This means that low temperature (narrow above the critical temperature of CO2) and a preferably high pressure favour the formation of porous propellants.