CL-20 Evaporative Crystallization under Reduced Pressure
Paweł Maksimowski , Tchórznicki Paweł
AbstractThe effect of parameters of the CL-20 crystallization process carried out by solvent removal by evaporation in vacuo on shape, polymorph type, crystal size, and on their shock sensitivity was studied. The CL-20 crystallization process by this technique was shown to allow a precise control of the crystallization process parameters and of the process run. The o-xylene/ ethyl acetate system proved to be highly effective. Selecting suitable values of the parameters such as: pressure, process time, temperature, stirring rate, CL-20 crystals were obtained in the e form (even with no need for inoculation of the crystallization system with polymorph e seeds) and of the shape close to a spherical one. The crystal growth modifiers added allowed to additionally control the shape and size of the CL-20 crystals formed and to produce crystals of reduced impact and friction sensitivity.
|Journal series||Propellants, Explosives, Pyrotechnics, ISSN 0721-3115|
|Publication size in sheets||0.5|
|Keywords in English||Solvent evaporation, e-CL-20, Evaporative crystallization, Reduced sensitivity, Shape and size of crystals|
|Score|| = 25.0, 01-02-2020, ArticleFromJournal|
= 25.0, 01-02-2020, ArticleFromJournal
|Publication indicators||= 5; = 1; : 2016 = 1.247; : 2016 = 1.908 (2) - 2016=1.913 (5)|
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