SENSITIVITY OF CL-20 TO EXTERNAL STIMULI RELATED TO THE SHAPES AND SIZE OF CRYSTALS OBTAINED UNDER VARIABLE CRYSTALLIZATION CONDITIONS

摘要

A total of nine CL-20 crystal samples obtained by crystallization conducted in a solventonsolvent system under variable process parameters such as: solvent kind, time of nonsolvent addition, stirrer speed, were studied in the aspect of their sensitivity to stimuli. As the result of the crystallization processes performed, CL-20 crystals were obtained that differed in their appearance and size. The CL-20 crystals of relatively small size and with rounded shapes. which were in part single crystals, exhibited the least sensitivity to friction or impact, whereas the crystals of irregular shape were sharp-edged agglomerates which exhibited the highest friction and impact sensitivities. Likewise, the large-size CL-20 crystals measuring ca. 200 ∝m, despite being rounded-shape single crystals, showed a high friction and impact sensitivities.