EP0509200A1 - Procédé de fabrication d'explosifs désensibilisés - Google Patents

Procédé de fabrication d'explosifs désensibilisés Download PDF

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Publication number
EP0509200A1
EP0509200A1 EP92102032A EP92102032A EP0509200A1 EP 0509200 A1 EP0509200 A1 EP 0509200A1 EP 92102032 A EP92102032 A EP 92102032A EP 92102032 A EP92102032 A EP 92102032A EP 0509200 A1 EP0509200 A1 EP 0509200A1
Authority
EP
European Patent Office
Prior art keywords
polymer
roller
explosive
aqueous dispersion
explosives
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.)
Granted
Application number
EP92102032A
Other languages
German (de)
English (en)
Other versions
EP0509200B1 (fr
Inventor
Dietmar Dipl.-Chem. Müller
Mathias Dipl.-Ing. Helfrich
Michael Mandt
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
Publication date
Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP0509200A1 publication Critical patent/EP0509200A1/fr
Application granted granted Critical
Publication of EP0509200B1 publication Critical patent/EP0509200B1/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
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • 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
    • 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

Definitions

  • the invention relates to a method for producing phlegmatized, high-energy explosives, in particular hexogen (RDX) or octogen (HMX), as a component of plastic-bound explosives or propellant charge powder, in that the particulate explosive is coated with a desensitizing polymer from an aqueous phase.
  • RDX hexogen
  • HMX octogen
  • 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.
  • This security risk is the higher, ever the grain size distribution is wider and the larger the coarse grain fraction, since single grain detonations can then occur, for example, in propellant grains.
  • 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 used 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 not only shows the above-mentioned disadvantages in processing, but is also responsible for certain technical defects.
  • These explosives cannot be added to the otherwise very advantageous processing of propellant powders and explosive mixtures in extruders, in particular twin screw extruders, since the security risk is too great.
  • the invention has for its object to propose a method of the type mentioned, which on the one hand does not require environmentally harmful solvents, and on the other hand leads to desensitized explosives with low sensitivity to friction.
  • This object is achieved in that the particulate explosive with a particle size of up to 20 microns slurried with the polymer in aqueous dispersion, the slurries applied to a rotating, heated roller, the application dried at a temperature> 100 ° C without pressure and after drying is scraped off the roller.
  • the process according to the invention can be carried out continuously and does not require any special precautions for workplace or environmental protection, since work is carried out in the aqueous phase.
  • a homogeneous dispersion can be achieved, which can be applied to the roller without any safety risk and which is dried without pressure by mere evaporation.
  • the explosive particles are coated homogeneously with the polymer.
  • the polymer used for desensitization preferably also forms the plastic binder for the finished explosive or the finished propellant charge powder, the polymer being added in the amount or a part thereof required for the end product.
  • the polymer from the group of styrene-1,3-butadiene-acrylonitrile and vinyl propionate-acrylate, the polymer preferably being used in a 50 to 55% strength aqueous dispersion.
  • polyvinyl alcohol can also be used as the polymer, the aqueous dispersion additionally containing glycerol.
  • a surface-active additive is preferably added to the aqueous dispersion.
  • a surface-active additive for example, highly disperse, amorphous silicon dioxide can be used as the surface-active additive.
  • the aforementioned additive prevents the formation of vapor bubbles, which in turn will cause the layer to crack open and possibly flake off. Furthermore, the flowability and the quality of the order is improved.
  • Adequate phlegmatization is obtained when the explosive is slurried with 5 to 25% by weight of polymer in aqueous dispersion.
  • the explosive is preferably used with a grain size of up to 10 ⁇ m, the grain size spectrum also being able to be in the range between 3 and 5 ⁇ m.
  • the slurry applied to the roller is preferably dried at a roller temperature between 110 ° C. and 150 ° C., preferably ⁇ 140 ° C., which enables relatively short residence times to be achieved. These can be, for example, in the range of 60 s and a little more if a roller of at least 150 cm is used and the layer thickness is ⁇ 10 mm.
  • An inventive desensitized RDX with a higher polymer content e.g. B. in the range of 15 to 25% can be used directly as basic granules in the extrusion of LOVA propellant powder.
  • a test series with hexogen (RDX) with a grain size of 10 ⁇ m and various polymers is shown in Table I in accordance with the annex, and the friction sensitivity and impact sensitivity determined in each case are listed.
  • the desensitizers are shown in capital letters, which are explained in the footnote to the table.
  • the example shows similarly good results in terms of sensitivity to friction with 75% by weight RDX and 25% by weight polymer A dispersed in water.
  • the impact sensitivity in this case is 0.35 kgm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Lubricants (AREA)
EP92102032A 1991-04-11 1992-02-07 Procédé de fabrication d'explosifs désensibilisés Expired - Lifetime EP0509200B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4111752 1991-04-11
DE4111752A DE4111752C1 (fr) 1991-04-11 1991-04-11

Publications (2)

Publication Number Publication Date
EP0509200A1 true EP0509200A1 (fr) 1992-10-21
EP0509200B1 EP0509200B1 (fr) 1995-07-05

Family

ID=6429315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102032A Expired - Lifetime EP0509200B1 (fr) 1991-04-11 1992-02-07 Procédé de fabrication d'explosifs désensibilisés

Country Status (3)

Country Link
US (1) US5547527A (fr)
EP (1) EP0509200B1 (fr)
DE (2) DE4111752C1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324739C1 (de) * 1993-07-23 1994-09-08 Deutsche Aerospace Gegossene kunststoffgebundene Sprengladung
DE19605346C1 (de) * 1996-02-14 1997-07-24 Fraunhofer Ges Forschung Phlegmatisierter Energieträger und Verfahren zur Rückgewinnung des in dem phlegmatisierten Energieträger enthaltenen Explosivstoffs
WO1997042137A1 (fr) * 1996-05-06 1997-11-13 Eastman Chemical Company Compositions explosives
WO1997042138A1 (fr) * 1996-05-03 1997-11-13 Eastman Chemical Company Compositions explosives
WO1997042140A1 (fr) * 1996-05-03 1997-11-13 Eastman Chemical Company Formulations d'explosifs
WO1997042139A1 (fr) * 1996-05-03 1997-11-13 Eastman Chemical Company Compositions explosives
WO1998016485A1 (fr) * 1996-10-15 1998-04-23 Eastman Chemical Company Formulations inflammables
CN103012299A (zh) * 2012-12-27 2013-04-03 中国工程物理研究院化工材料研究所 基于dmso/h2o二元体系的hmx制备方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728562B1 (fr) * 1994-12-22 1997-01-24 Poudres & Explosifs Ste Nale Procede de fabrication en continu de chargements pyrotechniques a liant silicone et compositions susceptibles d'etre mises en oeuvre par ce procede
DE19907809C2 (de) * 1999-02-24 2002-10-10 Nitrochemie Gmbh Verfahren zur Herstellung von ein-, zwei- oder dreibasigen Triebladungspulvern für Rohrwaffenmunition
DE10155885A1 (de) 2001-11-14 2003-06-05 Diehl Munitionssysteme Gmbh Unempfindlicher, pressbarer Sprengstoff
ZA200205775B (en) * 2002-04-12 2003-03-28 Diehl Munitionssysteme Gmbh Insensitive hexogen explosive.
FR2925488B1 (fr) * 2007-12-19 2011-12-23 Snpe Materiaux Energetiques Desensibilisation par enrobage de cristaux de substances energetiques explosives ; cristaux de telles substances enrobes, materiaux energetiques.
US8575074B2 (en) 2011-06-06 2013-11-05 Los Alamos National Security, Llc Insensitive explosive composition and method of fracturing rock using an extrudable form of the composition
US9850180B1 (en) * 2015-02-12 2017-12-26 The United States Of America As Represented By The Secretary Of The Army Method for manufacture of amorphous energetics
RU2734192C1 (ru) * 2020-03-12 2020-10-13 Акционерное общество "Взрывгеосервис" Взрывчатый состав для изготовления зарядов кумулятивных перфораторов (варианты)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE257319C (fr) *
US2438281A (en) * 1945-12-10 1948-03-23 Us Sec War Method for processing plastic sheets
US3586551A (en) * 1968-08-27 1971-06-22 Du Pont Water-degradable cap-sensitive selfsupporting explosive
US4113811A (en) * 1975-07-02 1978-09-12 Dynamit Nobel Aktiengesellschaft Process for the production of flexible explosive formed charges
EP0036481A2 (fr) * 1980-03-15 1981-09-30 Friedrich-Ulf Deisenroth Procédé de préparation d'explosifs liés par des polymères et produits obtenus selon ce procédé
EP0068528A1 (fr) * 1981-05-25 1983-01-05 Schweizerische Eidgenossenschaft vertreten durch die Eidg. Munitionsfabrik Thun der Gruppe für Rüstungsdienste Explosif de puissance élevée, à liant de matière plastique, formable a froid et son procédé de fabrication
DE3234978C1 (de) * 1982-09-22 1984-01-26 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Gegossene Sprengladung
US4997614A (en) * 1987-11-27 1991-03-05 Daicel Chemical Industries, Ltd. Method of mixing raw material composition of highly ignitable or explosive material

Family Cites Families (17)

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US1036906A (en) * 1912-08-27 O Reuter Granular explosive, especially suitable for the preparation of pressed pieces, and method of making the same.
US1007276A (en) * 1909-09-24 1911-10-31 Du Pont Powder Co Method of solidifying crystallizable mixtures without substantial crystallization.
US3348986A (en) * 1955-02-04 1967-10-24 Charles W Sauer Process of preparing plastic coated high explosive particles and articles
US3296041A (en) * 1964-07-08 1967-01-03 Eastman Kodak Co Granulated crystalline plastic bonded explosives
US3266957A (en) * 1964-09-24 1966-08-16 Richard H Stresau Booster explosive of ultrafine desensitized cyclotrimethylene-trinitramine and method of preparing same
US3338764A (en) * 1965-08-19 1967-08-29 Du Pont Flexible detonating compositions containing high explosives and polymeric metallocarboxylates
US3428502A (en) * 1966-10-25 1969-02-18 Du Pont Polyvinyl acetate binder for crystalline explosive
US4163681A (en) * 1970-04-15 1979-08-07 The United States Of America As Represented By The Secretary Of The Navy Desensitized explosives and castable thermally stable high energy explosive compositions therefrom
FR2135534B1 (fr) * 1971-05-06 1973-06-29 Wasagchemie Ag
US4092187A (en) * 1976-08-18 1978-05-30 The United States Of America As Represented By The Secretary Of The Army Process for coating crystalline high explosives
NO144666C (no) * 1980-02-29 1981-10-14 Dyno Industrier As Fremgangsmaate for fremstilling av aluminiumholdige hoeyenergisprengstoffblandinger
NO153804C (no) * 1984-02-08 1986-05-28 Dyno Indusrtrier A S Nitroglyc Fremgangsmaate for belegning av krystallinske hoeyeksplosiver.
DE3625412A1 (de) * 1986-07-26 1988-02-04 Messerschmitt Boelkow Blohm Verfahren zur herstellung eines kunststoffgebundenen explosivstoffs
DE3711995A1 (de) * 1987-04-09 1988-10-20 Messerschmitt Boelkow Blohm Verfahren zum phlegmatisieren von spreng- und treibstoffen
US4882994A (en) * 1988-01-28 1989-11-28 Veltman Preston Leonard Particulate fuel components for solid propellant systems
DE3804396C1 (en) * 1988-02-12 1989-05-18 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De Process for producing plastic-bonded explosives
DE3934368C1 (fr) * 1989-10-14 1990-11-15 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE257319C (fr) *
US2438281A (en) * 1945-12-10 1948-03-23 Us Sec War Method for processing plastic sheets
US3586551A (en) * 1968-08-27 1971-06-22 Du Pont Water-degradable cap-sensitive selfsupporting explosive
US4113811A (en) * 1975-07-02 1978-09-12 Dynamit Nobel Aktiengesellschaft Process for the production of flexible explosive formed charges
EP0036481A2 (fr) * 1980-03-15 1981-09-30 Friedrich-Ulf Deisenroth Procédé de préparation d'explosifs liés par des polymères et produits obtenus selon ce procédé
EP0068528A1 (fr) * 1981-05-25 1983-01-05 Schweizerische Eidgenossenschaft vertreten durch die Eidg. Munitionsfabrik Thun der Gruppe für Rüstungsdienste Explosif de puissance élevée, à liant de matière plastique, formable a froid et son procédé de fabrication
DE3234978C1 (de) * 1982-09-22 1984-01-26 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Gegossene Sprengladung
US4997614A (en) * 1987-11-27 1991-03-05 Daicel Chemical Industries, Ltd. Method of mixing raw material composition of highly ignitable or explosive material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 070, no. 24, 16. Juni 1969, Columbus, Ohio, US; abstract no. 107929G, 'Solid self-supporting explosives' Seite 104 ; & CS-A-127 990 (J. VACEK ET AL.) 15. Juni 1968 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324739C1 (de) * 1993-07-23 1994-09-08 Deutsche Aerospace Gegossene kunststoffgebundene Sprengladung
DE19605346C1 (de) * 1996-02-14 1997-07-24 Fraunhofer Ges Forschung Phlegmatisierter Energieträger und Verfahren zur Rückgewinnung des in dem phlegmatisierten Energieträger enthaltenen Explosivstoffs
WO1997042138A1 (fr) * 1996-05-03 1997-11-13 Eastman Chemical Company Compositions explosives
WO1997042140A1 (fr) * 1996-05-03 1997-11-13 Eastman Chemical Company Formulations d'explosifs
WO1997042139A1 (fr) * 1996-05-03 1997-11-13 Eastman Chemical Company Compositions explosives
WO1997042137A1 (fr) * 1996-05-06 1997-11-13 Eastman Chemical Company Compositions explosives
WO1998016485A1 (fr) * 1996-10-15 1998-04-23 Eastman Chemical Company Formulations inflammables
CN103012299A (zh) * 2012-12-27 2013-04-03 中国工程物理研究院化工材料研究所 基于dmso/h2o二元体系的hmx制备方法
CN103012299B (zh) * 2012-12-27 2015-01-14 中国工程物理研究院化工材料研究所 基于dmso/h2o二元体系的hmx制备方法

Also Published As

Publication number Publication date
DE59202779D1 (de) 1995-08-10
US5547527A (en) 1996-08-20
EP0509200B1 (fr) 1995-07-05
DE4111752C1 (fr) 1992-09-17

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