EP0423432B1 - Explosif désensibilisé et son procédé de fabrication - Google Patents

Explosif désensibilisé et son procédé de fabrication Download PDF

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Publication number
EP0423432B1
EP0423432B1 EP90113419A EP90113419A EP0423432B1 EP 0423432 B1 EP0423432 B1 EP 0423432B1 EP 90113419 A EP90113419 A EP 90113419A EP 90113419 A EP90113419 A EP 90113419A EP 0423432 B1 EP0423432 B1 EP 0423432B1
Authority
EP
European Patent Office
Prior art keywords
explosive
desensitizer
tlp
process according
pbx
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
EP90113419A
Other languages
German (de)
English (en)
Other versions
EP0423432A2 (fr
EP0423432A3 (en
Inventor
Dietmar Dr. Dipl.-Chem. Müller
Mathias Dipl.-Ing. Helfrich
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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
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Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP0423432A2 publication Critical patent/EP0423432A2/fr
Publication of EP0423432A3 publication Critical patent/EP0423432A3/de
Application granted granted Critical
Publication of EP0423432B1 publication Critical patent/EP0423432B1/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
    • 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
  • Hexogen and octogen are characterized by a high energy or explosiveness for their use, which, however, poses considerable problems for processing.
  • the high sensitivity to friction and impact leads to a correspondingly high security risk.
  • the greater the grain distribution and the larger the coarse grain fraction the higher this safety risk, since it is then, for example, single-grain detonations can occur in a propellant charge powder.
  • Such single-grain detonations are also undesirable in use, particularly when used in Lova-TLP.
  • the coarse grain fraction leads, for example, to intermittent burns in the case of TLP combustion interruptions, as a result of which the geometry of the propellant charge body changes in an uncontrolled manner and the combustion behavior and the ballistics are thus negatively influenced.
  • 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 grain.
  • 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 of 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 of the solvents mentioned is advantageously carried out at a product temperature over 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

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

Claims (18)

  1. Explosif hautement énergétique flegmatisé, par exemple de l'hexogène (RDX) ou de l'octogène (HMX), en tant que constituant de poudres de charges propulsives liées par NC ou par matière plastique (Lova-TLP) ou d'explosifs liés par matière plastique (PBX), l'explosif présentant une grosseur de grain allant jusqu'à 5 µm, carac térisé en ce que le flegmatisant est incorporé dans le grain d'explosif.
  2. Explosif selon la revendication 1, caractérisé en ce qu'il présente une grosseur de grains comprise entre 3 et 5 µm.
  3. Explosif selon l'une des revendications 1 ou 2, caractérisé en ce que la proportion de flegmatisant peut atteindre 6 %.
  4. Explosif selon l'une des revendications 1 à 3, caractérisé en ce que la proportion de flegmatisant est comprise entre 0,3 et 2 %.
  5. Explosif selon l'une des revendications 1 à 4, caractérisé en ce que le flegmatisant est en même temps l'un des constituants de la formulation du TLP ou du PBX.
  6. Explosif selon la revendication 5, caractérisé en ce que le flegmatisant est en même temps un plastifiant pour la matière plastique de liaison du TLP ou du PBX.
  7. Explosif selon l'une des revendications 1 à 6, caractérisé en ce que le flegmatisant est du dibutylphtalate (DBP).
  8. Explosif selon l'une des revendications 1 à 6, caractérisé en ce que le flegmatisant est du di-(2-éthylhexyl)-adipate (DOA).
  9. Procédé de fabrication d'explosifs hautement énergétiques avec une grosseur de grain allant jusqu'à 5 µm, par exemple de l'hexogène (RDX) ou de l'octogène (HMX), en tant que constituant de poudres de charges propulsives liées par NC ou par matière plastique (Lova-TLP) ou d'explosifs liés par la matière plastique (PBX), consistant à flegmatiser les particules d'explosif avec un flegmatisant en phase liquide et à mélanger l'explosif flegmatisé avec les autres constituants en Lova-TLP ou PBX, caractérisé en ce que l'explosif est dissous et mélangé avec le flegmatisant en phase liquide dont la proportion peut atteindre environ 6 %, et que le mélange est transformé par séchage par pulvérisation, en phase solide avec une grosseur de grain jusqu'à 5 µm.
  10. Procédé selon la revendication 9, caractérisé en ce que l'explosif est dissous avec du diméthylformamide (DMF) ou avec du sulfoxyde diméthylique (DMSO).
  11. Procédé selon l'une des revendications 9 ou 10, caractérisé en ce qu'il utilise comme flegmatisant un composant de la formulation du Lova-TLP ou du PBX.
  12. Procédé selon l'une des revendications 9 à 11, caractérisé en ce qu'il utilise comme flegmatisant un plastifiant pour la résine de liaison du Lova-TLP ou du PBX.
  13. Procédé selon l'une des revendications 9 à 12, caractérisé en ce qu'il utilise comme flegmatisant du dibutylphtalate (DBP) ou du di-(2-éthylhexyl)-adipate (DOA).
  14. Procédé selon l'une des revendications 9 à 13, caractérisé en ce que le flegmatisant liquide est ajouté dans une proportion comprise entre 0,3 et 2 %.
  15. Procédé selon l'une des revendications 9 à 14, caractérisé en ce que le séchage par pulvérisation s'effectue à une température du produit supérieure à 100°C et inférieure à la température de décomposition de l'explosif.
  16. Procédé selon l'une des revendications 9 à 15, caractérisé en ce que la température de l'air de transport utilisé pour le séchage par pulvérisation est plus élevée que la température du produit.
  17. Procédé selon la revendication 16, caractérisé en ce que la température de l'air de transport est d'environ 150°C.
  18. Procédé selon l'une des revendications 9 à 17, caractérisé en ce que le mélange est pulvérisé au moyen d'une buse pour deux ou plusieurs composants, en combinaison avec de l'air comprimé, un gaz sous pression ou un liquide inerte par rapport au mélange.
EP90113419A 1989-10-14 1990-07-13 Explosif désensibilisé et son procédé de fabrication Expired - Lifetime EP0423432B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934368A DE3934368C1 (fr) 1989-10-14 1989-10-14
DE3934368 1989-10-14

Publications (3)

Publication Number Publication Date
EP0423432A2 EP0423432A2 (fr) 1991-04-24
EP0423432A3 EP0423432A3 (en) 1991-12-11
EP0423432B1 true EP0423432B1 (fr) 1993-10-06

Family

ID=6391494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90113419A Expired - Lifetime EP0423432B1 (fr) 1989-10-14 1990-07-13 Explosif désensibilisé et son procédé de fabrication

Country Status (3)

Country Link
US (1) US5026443A (fr)
EP (1) EP0423432B1 (fr)
DE (2) DE3934368C1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4111752C1 (fr) * 1991-04-11 1992-09-17 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De
GB2258656B (en) * 1991-08-15 1994-01-12 Albright & Wilson Processing of powder
US5389263A (en) * 1992-05-20 1995-02-14 Phasex Corporation Gas anti-solvent recrystallization and application for the separation and subsequent processing of RDX and HMX
SE470480B (sv) * 1992-10-02 1994-05-24 Bofors Explosives Ab Drivmedel för Air bags
US5487851A (en) * 1993-12-20 1996-01-30 Thiokol Corporation Composite gun propellant processing technique
US6364975B1 (en) 1994-01-19 2002-04-02 Universal Propulsion Co., Inc. Ammonium nitrate propellants
US5583315A (en) * 1994-01-19 1996-12-10 Universal Propulsion Company, Inc. Ammonium nitrate propellants
DE19907809C2 (de) * 1999-02-24 2002-10-10 Nitrochemie Gmbh Verfahren zur Herstellung von ein-, zwei- oder dreibasigen Triebladungspulvern für Rohrwaffenmunition
GB9913262D0 (en) * 1999-06-09 2002-08-21 Royal Ordnance Plc Desensitation of energetic materials
DE10107948A1 (de) * 2001-02-20 2002-08-22 Rheinmetall W & M Gmbh Verfahren zur Herstellung gießfähiger kunststoffgebundener Sprengladungen oder Raketentreibstoffe
US8778103B2 (en) 2011-09-02 2014-07-15 Alliant Techsystems Inc. Energetic compositions including nitrate esters and articles including such energetic compositions
DE102012016478A1 (de) * 2012-08-17 2014-02-20 Diehl Bgt Defence Gmbh & Co. Kg Insensitive Sprengstoffwirkmasse mit einem Phlegmatisierungsmittel
EP3255028A1 (fr) 2016-06-08 2017-12-13 Umwelt-Technik-Metallrecycling GmbH Procédé de flegmatisation de substances explosives et substances explosives flegmatisées ainsi obtenues
CN112745178A (zh) * 2021-01-04 2021-05-04 西安近代化学研究所 一种高压静电喷雾包覆黑索金的方法

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DE1072169B (de) * 1959-03-06 1959-12-24 Dynamit-Actien^Gesell'schaft vormals Alfred Nobel11& Co., Troisdorf (Bez. Köln) Verfahren zur Herstellung von 'Sprengstoffen auf der Basis von feinkristallinemi, säurefreiem Cyclotrimethyilentrinitramin und/oder Nitroguanidin
AT251459B (de) * 1962-08-13 1967-01-10 Du Pont Verfahren zur Herstellung von brisanten, organischen Sprengstoffen in feinkristalliner Form
US3266957A (en) * 1964-09-24 1966-08-16 Richard H Stresau Booster explosive of ultrafine desensitized cyclotrimethylene-trinitramine and method of preparing same
US3311513A (en) * 1965-03-05 1967-03-28 Du Pont Nitramine, nitrocellulose explosive with ester plasticizer
US3745927A (en) * 1969-05-19 1973-07-17 Celanese Corp Casing and propellant of nitrocellulose filaments and nitrocellulose fibers
US4050968A (en) * 1970-04-29 1977-09-27 The United States Of America As Represented By The Secretary Of The Navy Explosive composition containing a hydroxyalkyl acrylate copolymer binder
US3923564A (en) * 1971-06-22 1975-12-02 Us Army Double base propellant with thorium containing ballistic modifier
US4689097A (en) * 1983-08-22 1987-08-25 Hercules Incorporated Co-oxidizers in solid crosslinked double base propellants (U)
DE3711995A1 (de) * 1987-04-09 1988-10-20 Messerschmitt Boelkow Blohm Verfahren zum phlegmatisieren von spreng- und treibstoffen
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Also Published As

Publication number Publication date
EP0423432A2 (fr) 1991-04-24
DE59003000D1 (de) 1993-11-11
EP0423432A3 (en) 1991-12-11
US5026443A (en) 1991-06-25
DE3934368C1 (fr) 1990-11-15

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