OCTOGEN MODIFIED WITH CARBON NANOTUBES AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2022 - IPC C06B49/00 C06B21/00 B82B3/00 

FIELD: explosives.

SUBSTANCE: invention relates to the field of production of explosive substances and products based thereon, namely, to production of high explosives used in creation of initiation means, in particular, to an octogen modified with carbon nanomaterials. The product can be used in manufacture of shock-wave tubes of non-electric initiation systems, heat-resistant detonating cords, heat-resistant detonators, as well as in other means of initiation and transmission of detonation, intended for use in perforating and blasting equipment in deep boreholes, charges for perforators and blasting equipment. In the method for producing an octogen modified with carbon nanotubes, a solution of an organic ε-caprolactam solvent is heated while stirring. When the temperature of 50 to 70°C is achieved, an octogen suspension is introduced. Heating is continued until a temperature of 100 to 130°C. The mixture is held until complete dissolution while stirring. The solution is then cooled to a temperature of 98±5°C. An aqueous suspension of carbon nanotubes is dosed into the solution while stirring. The amount of nanotubes is introduced at the rate of 0.005 to 0.19% of the mass of the loaded octogen. After dosing the nanotubes, the reaction mass is cooled at a rate of 0.3 to 1.5 deg/min to a temperature of no less than 50°C while stirring. The octogen modified with carbon nanotubes, produced by the above method, is characterised by a specific surface area from 1,500 to 4,000 cm²/g, particle size d₅₀ from 50 to 500 mcm or a normalised particle size d₅₀ from 17 to 25 mcm for manufacturing a shock wave tube.

EFFECT: electrical conductivity, specific volumetric electrical resistance from 1 to 5 *10⁴ Ohm∙m, improved flowability, increased heat conductivity and thermal stability of the product are provided.

2 cl