Classifications

• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
  • C06B33/08—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide with a nitrated organic compound
• • C—CHEMISTRY; METALLURGY
  • C06—EXPLOSIVES; MATCHES
  • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
  • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
  • C06B21/0033—Shaping the mixture
  • C06B21/0058—Shaping the mixture by casting a curable composition, e.g. of the plastisol type

Definitions

• the invention relates to a method for producing castable plastic-bound Explosive charges according to the preamble of claim 1.
• Plastic-bound explosive charges have a high active power relatively high insensitivity. They consist of reaction polymers in the front curing crystalline explosives, such as octogen, hexogen, pentaerythritol tetranitrate etc., can be incorporated. The polymer content is about 10 to 20 Wt .-%.
• a problem with the manufacture of plastic explosive charges is that with increasing solids content, i.e. with increasing proportion of explosive, the viscosity of the mixture can increase so that pouring of this mixture becomes impossible.
• the theoretical limit for a flowable mixture is 92 Wt .-%.
• the practical limit for flowable Mixtures is approx. 90% by weight.
• explosive charges with one high solid content can only be poured if the grain sizes are suitable for the explosive charge explosive crystals used within a predetermined diameter interval lie, so that a relatively costly screening of grain fractions is required.
• the invention has for its object a method for producing less sensitive pourable plastic-bound explosive charges with a high (e.g. Specify 90%) solid content, which one for casting the explosives have a sufficiently low viscosity without first screening out the grain fraction is required.
• a high (e.g. Specify 90%) solid content which one for casting the explosives have a sufficiently low viscosity without first screening out the grain fraction is required.
• the invention is essentially based on the idea of the respective explosive charge 0.1 to 10% by weight of very fine-grained vanadium, niobium, tantalum, chromium, molybdenum or tungsten powder or a mixture of two or more of these
• the powder grains having an essentially spherical shape should have.
• the shape of the powder grains has a very small specific surface Surprisingly shown that they are like liquid lubricants between the coarser ones Explosive particles act (tribological effect) so that they are relative low viscosities between 400 and 1200 Pas at 50 ° C result.
• Explosive charges can be easily produced with the method according to the invention, which, despite a 90% solids content, have a viscosity without Use of appropriate metal powder with a solids content of 85% is achieved.
• the percentage of the metal powder depends on the special surface of the Metal powder and the grain size and experience has shown that it is preferably between 2 and 5 wt .-%, while the grain size is preferably between 0.1 and 5 microns.
• HMX octogen
• RDX hexogen
• PETRIN Pentaerythritol tetranitrate
• the explosive charges according to the invention are produced using the following typical recipes: 80-88% by weight Crystalline explosives, e.g. RDX or HMX 10-20% by weight Binder, e.g. HTPB 5-10% by weight softener 0.01-02% by weight bonding agent 0.05-05% by weight coating aids 0.1-1.0% by weight antioxidant 0.1-10% by weight metal powder

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Powder Metallurgy (AREA)
• Manufacture Of Metal Powder And Suspensions Thereof (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Compositions Of Oxide Ceramics (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=7664740

Family Applications (1)

Country Status (4)

Families Citing this family (4)

Family Cites Families (12)

• 2000
  • 2000-11-25 DE DE10058705A patent/DE10058705C1/de not_active Expired - Lifetime
• 2001
  • 2001-10-19 DE DE50107350T patent/DE50107350D1/de not_active Expired - Lifetime
  • 2001-10-19 EP EP01124918A patent/EP1211232B1/fr not_active Expired - Lifetime
  • 2001-10-22 NO NO20015140A patent/NO321217B1/no not_active IP Right Cessation
  • 2001-11-26 US US09/991,926 patent/US6589374B2/en not_active Expired - Lifetime

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