METHOD OF PREPARING NANO-DIAMANDS Russian patent published in 2004 - IPC

FIELD: carbon materials.

SUBSTANCE: explosive charge with negative oxygen balance and consisting of 30 wt % trotyl and 70 wt % hexogen is placed inside ice armoring so that ice-to-charge weight ratio is between 0.5:1 and 50:1. Armoring is then placed in sealed blasting chamber and the charge is blasted. Resulting water suspension of nano-diamands is decanted into receiver. Yield of nano-diamands is 9.5 to 16.7%, amount of impurities is no more than 0.8 wt %, and percentage of nano-diamands in suspension 62.8-87.1 wt %. Invention is intended for chemical, electrochemical, and abrasive industries and may be used for manufacturing abrasive, polishing compositions, polymer-diamond and oil biologically active compositions, diamond-like films and coatings, hydrogen accumulators, and adsorbents.

EFFECT: enhanced process efficiency.

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