EP1211232B1 - Procédé de fabrication de charges explosives liées par des polymères, qui peuvent être moulées - Google Patents

Procédé de fabrication de charges explosives liées par des polymères, qui peuvent être moulées Download PDF

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Publication number
EP1211232B1
EP1211232B1 EP01124918A EP01124918A EP1211232B1 EP 1211232 B1 EP1211232 B1 EP 1211232B1 EP 01124918 A EP01124918 A EP 01124918A EP 01124918 A EP01124918 A EP 01124918A EP 1211232 B1 EP1211232 B1 EP 1211232B1
Authority
EP
European Patent Office
Prior art keywords
explosive
plastic
weight
bound
powder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01124918A
Other languages
German (de)
English (en)
Other versions
EP1211232A2 (fr
EP1211232A3 (fr
Inventor
Paul Dr. Wanninger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Waffe Munition GmbH
Original Assignee
Rheinmetall Waffe Munition GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rheinmetall Waffe Munition GmbH filed Critical Rheinmetall Waffe Munition GmbH
Publication of EP1211232A2 publication Critical patent/EP1211232A2/fr
Publication of EP1211232A3 publication Critical patent/EP1211232A3/fr
Application granted granted Critical
Publication of EP1211232B1 publication Critical patent/EP1211232B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 process for producing pourable plastic bound Explosive charges according to the preamble of claim 1.
  • Plastic-bound explosive charges have a high active power despite a high relatively high insensitivity. They consist of reaction polymers in the pre curing crystalline explosives, such as octogen, hexogen, pentaerythritol tetranitrate etc., to be incorporated. The polymer content is about 10 to 20 Wt .-%.
  • a problem in the production of plastic-bound explosive charges is that that with increasing solids content, i. with increasing proportion of explosive, the viscosity of the mixture may 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 at about 90 wt .-% is.
  • explosives are with such a high solids content only pourable if the particle sizes of the explosive charge used explosive crystals within a given diameter interval lie, so that a relatively expensive screening of grain fractions is required.
  • From DE 38 04 396 C1 is a process for the production of plastic-bound Explosives known in which to increase the solids content without Viscosity increase of the pourable explosive charge is proposed to the mixture from explosive and other solids as well as the hardenable plastic before or during the mixing process, a proportion of the solid as Add finest grain.
  • the finest grain fraction should be 0.1 to 10%, based on the weight of all solids, and the mean grain size of the Feinstkorns less than 25 microns, preferably less than 8 microns, amount.
  • the Feinstkornanteil can be made of an explosive (Oktogen or Hexogeb), a Oxygen carriers (nitrates or chlorates) or fuels (aluminum powder) consist.
  • the invention is based on the object, a method for producing insensitive pourable plastic bonded explosive charges with a high (e.g. % solids), which is sufficient for casting the explosive have low viscosity, without previously screening the grain fraction is required.
  • the invention is based essentially on the idea of the respective explosive charge 0.1 to 10 wt .-% fine-grained vanadium, niobium, tantalum, chromium, molybdenum or Add tungsten powder or a mixture of two or more such powders, wherein the powder grains are to have a substantially spherical shape.
  • this metal powder due to the spherical shape of the powder grains have a very small specific surface, has surprisingly shown to be like liquid lubricants between the coarser-grained explosive particles act (tribological effect), so that relatively low viscosities between 400 and 1200 Pas at 50 ° C result.
  • the percentage of metal powder depends on the special surface of the Metal powder and the grain size and is according to experience preferably between 2 and 5 wt .-%, while the grain size is between 0.1 and 5 microns.
  • the explosives are preferably octogen (HMX), hexogen (RDX) and Pentaerythritol tetranitrate (PETRIN) has proved beneficial.
  • HMX octogen
  • RDX hexogen
  • PETRIN Pentaerythritol tetranitrate
  • the explosive charges according to the invention are produced by means of the following typical formulations: 80-88% by weight Crystalline explosive, eg RDX or HMX 10-20% by weight Binder, eg 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)

Claims (2)

  1. Procédé de fabrication de charges explosives plastiques, coulables, dans lequel une matière explosive cristalline est incorporée dans une matrice polymère constituée d'un liant, d'un plastifiant et d'autres substances auxiliaires, caractérisé en ce que pour assurer une viscosité suffisamment basse pour permettre le coulage de l'explosif à une haute teneur en solides, on ajoute comme autre substance auxiliaire à la charge explosive de 0,1 à 10% en poids d'une poudre métallique d'un ou de plusieurs des métaux suivants: vanadium, niobium, tantale, chrome, molybdène et tungstène, et en ce que l'on utilise des poudres métalliques dont les grains ont une forme essentiellement sphérique et ont une taille comprise entre 0,1 et 5 µm.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on ajoute à la charge explosive de 2 à 5% en poids de poudre métallique.
EP01124918A 2000-11-25 2001-10-19 Procédé de fabrication de charges explosives liées par des polymères, qui peuvent être moulées Expired - Lifetime EP1211232B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10058705A DE10058705C1 (de) 2000-11-25 2000-11-25 Verfahren zur Herstellung gießfähiger kunststoffgebundener Sprengladungen
DE10058705 2000-11-25

Publications (3)

Publication Number Publication Date
EP1211232A2 EP1211232A2 (fr) 2002-06-05
EP1211232A3 EP1211232A3 (fr) 2002-08-14
EP1211232B1 true EP1211232B1 (fr) 2005-09-07

Family

ID=7664740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01124918A Expired - Lifetime EP1211232B1 (fr) 2000-11-25 2001-10-19 Procédé de fabrication de charges explosives liées par des polymères, qui peuvent être moulées

Country Status (4)

Country Link
US (1) US6589374B2 (fr)
EP (1) EP1211232B1 (fr)
DE (2) DE10058705C1 (fr)
NO (1) NO321217B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060011083A1 (en) * 2004-06-30 2006-01-19 Perry William L Microwave heating of energetic materials
GB0815936D0 (en) * 2008-08-29 2009-01-14 Bae Systems Plc Cast Explosive Composition
DE102010044344A1 (de) * 2010-09-03 2012-03-08 Rheinmetall Waffe Munition Gmbh Kunststoffgebundene Sprengstoffformulierung
DE102014007455A1 (de) * 2014-05-21 2015-11-26 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Verfahren zur Drucksteigerung einer Komposit-Ladung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969638A (en) * 1956-11-30 1961-01-31 Phillips Petroleum Co Solid propellant and propellant burning rate catalyst system
US3255281A (en) * 1960-06-21 1966-06-07 North American Aviation Inc Propellant casting method
US3865035A (en) * 1969-01-16 1975-02-11 Thiokol Chemical Corp Multi-use munition
DE2952069C2 (de) * 1979-12-22 1983-02-17 Dynamit Nobel Ag, 5210 Troisdorf Verwendung von Zinkperoxid in sprengstoffhaltigen oder pyrotechnischen Gemischen
DE3010052C2 (de) * 1980-03-15 1982-09-09 Friedrich-Ulf 8899 Rettenbach Deisenroth Verfahren zur Herstellung von kunststoffgebundenen Explosivstoffen
US4747892A (en) * 1987-05-22 1988-05-31 The United States Of America As Represented By The Secretary Of The Air Force Melt-castable explosive composition
DE3804396C1 (en) * 1988-02-12 1989-05-18 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De Process for producing plastic-bonded explosives
US5388518A (en) * 1988-11-10 1995-02-14 Composite Materials Technology, Inc. Propellant formulation and process
US5472531A (en) * 1992-12-01 1995-12-05 The United States Of America As Represented By The Secretary Of The Army Insensitive explosive composition
US5942720A (en) * 1993-04-29 1999-08-24 Cordant Technologies Inc. Processing and curing aid for composite propellants
DE4324739C1 (de) * 1993-07-23 1994-09-08 Deutsche Aerospace Gegossene kunststoffgebundene Sprengladung
DE19616627A1 (de) * 1996-04-26 1997-11-06 Dynamit Nobel Ag Anzündmischungen

Also Published As

Publication number Publication date
DE10058705C1 (de) 2002-02-28
EP1211232A2 (fr) 2002-06-05
NO20015140L (no) 2002-05-27
NO20015140D0 (no) 2001-10-22
US6589374B2 (en) 2003-07-08
DE50107350D1 (de) 2005-10-13
US20020096233A1 (en) 2002-07-25
EP1211232A3 (fr) 2002-08-14
NO321217B1 (no) 2006-04-03

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