Classifications

• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B25/00—Compositions containing a nitrated organic compound
  • C06B25/34—Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
  • C06B23/005—Desensitisers, phlegmatisers

Definitions

• the invention relates to a desensitized, high-energy explosive, for. B. hexogen (RDX), octogen (HMX) or the like, as a component of NC or plastic-bound propellant powders (Lova-TLP) or plastic-bound explosives (PBX) and methods for its production.
• RDX hexogen
• HMX octogen
• NC plastic-bound propellant powders
• PBX plastic-bound explosives
• any water moisture that may still be present is granulated in the same mixer.
• a wax is proposed as a desensitizer, which is dissolved in perchlorethylene.
• Graphite powder is also added, which also has a desensitizing effect, in particular prevents electrostatic charges.
• a high-energy explosive produced in this way has a broad grain distribution with a high proportion of coarse grain, which shows the above-mentioned disadvantages in processing and use.
• the explosives produced in this known manner in particular, cannot be added to the otherwise very advantageous processing of propellant charge powders and explosive mixtures in extruders, in particular twin-screw extruders, since the security risk is too great.
• the invention is based on the object of proposing explosives of the type mentioned at the outset which can be processed with a considerably reduced safety risk, in particular also in an extruder process, and which also lead to better combustion behavior, especially after combustion has been interrupted. Furthermore, the invention is intended to create a method for producing such explosives.
• the explosive has a grain size of up to 5 microns and that the desensitizer is built into the explosive core.
• the explosive has a grain size between 3 and 5 microns.
• the desensitizer can be present with a proportion of up to 6%, preferably with a proportion between 0.3 and 2%.
• the desensitizer is also one of the components of the formulation of the TLP or PBX, for. B. is a plasticizer for the plastic binder contained in this formulation.
• dibutyl phthalate can be used as the desensitizer, but di- (2-ethylhexyl) adipate (DOA) is preferably used as the desensitizer.
• DBP dibutyl phthalate
• DOA di- (2-ethylhexyl) adipate
• the invention is based on the known method (DE-OS 37 11 995), in which the explosive particles (RDX or HMX) are desensitized with a desensitizer in the liquid phase.
• the desensitized explosive can then be mixed with the other components to formulate the Lova-TLP or PBX.
• the explosive in the dissolved state and mixed with the desensitizer in the liquid phase in a proportion of up to about 6% and the mixture by spray drying in the solid phase with a grain size up to 5 microns is converted.
• the explosive is preferably dissolved with dimethylformamide (DMF) or dimethyl sulfoxide (DMSO), while as a desensitizer, as already indicated, a component of the formulation of the Lova-TLP or PBX, e.g. B. a plasticizer for the plastic binder of this formulation is added.
• DMF dimethylformamide
• DMSO dimethyl sulfoxide
• spray drying is advantageously carried out with the solvents mentioned for a product Temperature above 100 degrees Celsius, but below the decomposition temperature of the explosives mentioned.
• the temperature of the transport air used in the spray drying may be higher, e.g. B. in the range of 150 degrees Celsius.
• the particle size and particle size distribution can be controlled particularly well in terms of process technology if the mixture is sprayed together with compressed air, compressed gas or a liquid which is inert to the mixture by means of a two- or multi-component nozzle.
• RDX Hexogen
• DMF dimethylformamide
• DBP dibutyl phthalate
• RDX Hexogen
• DMF dimethylformamide
• DOA di- (2-ethylhexyl) adipate
• Friction sensitivity Grain size Reaction at Sample 1 (with DBP) 3 - 5 ⁇ m 14.4 kg Sample 2 (with DOA) 3 - 5 ⁇ m 20.0 kg Sample 3 (without addition) 3 - 5 ⁇ m 12.0 kg Ground hexogen (without additives) 10 ⁇ m 13.0 kg Impact sensitivity: Reaction at Sample 1 ⁇ 0.2 kgm Sample 2 ⁇ 0.2 kgm Sample 3 ⁇ 0.2 kgm Hexogen milled (10 ⁇ m) 0.20 kgm Hexogen milled (larger than 300 ⁇ m) 0.30 kgm

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Processes Of Treating Macromolecular Substances (AREA)

Applications Claiming Priority (2)

Publications (3)

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ID=6391494

Family Applications (1)

Country Status (3)

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Family Cites Families (10)

• 1989
  • 1989-10-14 DE DE3934368A patent/DE3934368C1/de not_active Expired - Lifetime
• 1990
  • 1990-07-13 DE DE90113419T patent/DE59003000D1/de not_active Expired - Fee Related
  • 1990-07-13 EP EP90113419A patent/EP0423432B1/fr not_active Expired - Lifetime
  • 1990-08-27 US US07/572,430 patent/US5026443A/en not_active Expired - Lifetime

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