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Production of HMX crystals with high internal quality by cooling crystallization

Herstellung fehlstellenarmer Oktogenkristalle durch Rekristallisation aus Lösungen
: Kroeber, H.; Teipel, U.; Leisinger, K.; Krause, H.

Teipel, U. ; Fraunhofer-Institut für Chemische Technologie -ICT-, Pfinztal:
Energetic materials - production, processing and characterization
Pfinztal: ICT, 1998 (Proceedings of the International Annual Conference of ICT 29)
ISSN: 0722-4087
Fraunhofer-Institut für Chemische Technologie (Internationale Jahrestagung) <29, 1998, Karlsruhe>
Fraunhofer-Institut für Chemische Technologie (International Annual Conference) <29, 1998, Karlsruhe>
Conference Paper
Fraunhofer ICT ()

The crystn. of HMX from solns. by cooling was studied as to the prodn. of crystals with little defects and explosives of low vulnerability. Influences of solvents, stirrer design and speed, and cooling rate were studied. Vulnerability was tested using hydroxy-terminated polybutadiene-bonded formulations. Samples obtained by crystn. from propylene carbonate showed the desired crystal shape, size, purity, and surface properties and essentially decreased vulnerability. Other solvents tested were cyclohexanone, DMF, and N-methylpyrrolidone. A relationship between particle d. and vulnerability was found.