WO1997023434A1 - Melange d'allumage exempt d'explosif d'amorçage - Google Patents

Melange d'allumage exempt d'explosif d'amorçage Download PDF

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Publication number
WO1997023434A1
WO1997023434A1 PCT/EP1996/005707 EP9605707W WO9723434A1 WO 1997023434 A1 WO1997023434 A1 WO 1997023434A1 EP 9605707 W EP9605707 W EP 9605707W WO 9723434 A1 WO9723434 A1 WO 9723434A1
Authority
WO
WIPO (PCT)
Prior art keywords
ignition
mixture according
magnesium
metal
calcium
Prior art date
Application number
PCT/EP1996/005707
Other languages
German (de)
English (en)
Inventor
Oskar Häring
Rainer Hagel
Dieter Hofmann
Klaus Redecker
Wolfgang Spranger
Original Assignee
Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik
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 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik filed Critical Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik
Publication of WO1997023434A1 publication Critical patent/WO1997023434A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C9/00—Chemical contact igniters; Chemical lighters
    • 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

Definitions

  • the invention relates to an initial explosive-free ignition mixture.
  • Ignition mixtures generally contain oxidizing and reducing substances as well as inert substances, in particular binders. These sentences generally serve to intensify the ignition, which is initiated by explosive mixtures, which usually contain initial explosives. Ignition support causes. a separate pyrotechnic reaction of the oxidation-reduction system with a stronger heat build-up with the formation of hot particles that stabilize the ignition.
  • primer charges contained lead salts as initial explosives, which are derived from di- and trinitroresorcinol, trinitrophenols or hydrochloric acid.
  • ignition charges are known which contain double salts of lead, for example lead hypophosphite nitrate.
  • EP-0 031 045 discloses the use of zinc peroxide as the sole or partial oxidizing agent in explosive-containing or pyrotechnic mixtures. In here The ignition mixtures described are, however, not only present in zinc peroxide but in combination with an initial explosive.
  • EP-0 129 081 describes lead and barium-free primers consisting of initial explosives mixed with zinc peroxide as the oxidizing agent.
  • the swaths In addition to problematic starting materials in the ignition kits of the prior art, various compounds of the heavy metals can be found in the swaths, in particular halogens made from perchlorates.
  • the swaths according to the prior art mentioned at the outset often contain those which, when deposited in the devices, can cause considerable contamination and corrosion if the air is exposed to moisture. These include, in particular, mixtures which contain nitrates of the alkali or alkaline earth metals as oxidizing agents.
  • the present invention addresses the problem of providing ignition mixtures, the manufacture, processing, handling and use thereof which are harmless and their Reaction products are not toxic.
  • the above-mentioned problem is solved by starting explosive-free ignition mixtures containing oxygen-releasing substances selected from metal peroxides of the elements calcium, magnesium, strontium and / or zinc, metal oxides of the elements tin, tungsten and / or molybdenum and / or Nitrates of ammonium, guanidine, aminoguanidine, triaminoguanidine, dicyandiamidine and the elements sodium, potassium, magnesium, calcium and / or iron and known reducing agents.
  • oxygen-releasing substances selected from metal peroxides of the elements calcium, magnesium, strontium and / or zinc, metal oxides of the elements tin, tungsten and / or molybdenum and / or Nitrates of ammonium, guanidine, aminoguanidine, triaminoguanidine, dicyandiamidine and the elements sodium, potassium, magnesium, calcium and / or iron and known reducing agents.
  • the oxidizing agents can also be used as mixtures.
  • Calcium and / or zinc peroxide are preferably used. However, mixtures of the peroxides with one another or with other oxidizing agents can also be used.
  • the peroxides are used with an oxygen value that can be obtained from stable compounds. For zinc peroxide this is approximately 11 to 14% by weight, while calcium peroxide can have an active oxygen value of 15 to 20, for example 18.6% by weight and grain sizes of 15.5 ⁇ m.
  • the proportion of the oxidizing agents in the ignition mixtures according to the invention will preferably be based on the stoichiometric requirement for the corresponding accompanying components.
  • the reducing agents to be used are preferably selected from carbon, metal powders, in particular aluminum, cerium, titanium, zirconium, magnesium, iron and / or zinc, metal alloys, in particular cerium magnesium, cerium silicon, titanium aluminum and / or aluminum -Magnesium, metal hydrides, calcium silicide and metal sulfides, especially iron sulfides and molybdenum sulfide, in particular in a proportion of 10 to 70% by weight, based on the total mixture.
  • the hydrides mentioned above can only be used insofar as they are stable under the conditions of use and storage. These include in particular metal hydrides of transition metals and intermetallic compounds.
  • the hydrides of titanium or zircon can be used as such.
  • the oxidizing and reducing agents described at the outset can be used directly by mixing according to processes known per se.
  • segregation can be countered by shaping the mixture, for example as a tablet or cylinder using methods known per se, such as pressing, vibrating or pounding.
  • pressing aids can also be added to the mixture.
  • graphite, molybdenum sulfide, polytetrafluoroethylene, talc, zinc stearate and / or boron nitride are particularly preferred. These agents work even in small quantities and do not or only slightly influence the properties and the burning behavior. These agents are therefore included in the inert substances.
  • Suitable binders are nitrocellulose, preferably with a low degree of nitration, and binders based on thermoplastic polymers which do not form any aggressive gases when burned.
  • this includes the polyvinyl acetal resins obtained by reacting polyvinyl alcohol with aldehydes.
  • the aldehydes used to prepare the polyvinyl acetal resins should have 1 to 6 carbon atoms.
  • the preferred aldehyde is butyraldehyde, as a result of which polyvinyl butyral resins are obtainable which, if appropriate, can contain up to 35% by weight of a customary plasticizer.
  • binders are those compounds which are used as bifunctional monomers and which, after mixing with the other constituents of the ignition mixture, undergo a free-radical crosslinking or condensation.
  • These compounds include acrylic resins.
  • the acrylic resins which can preferably be used include the known methyl acrylate, methyl methacrylate and acrylonitrile resins.
  • a further binder is, for example, cellulose acetate or cellulose acetobutyrate or cellulose acetopropionate, all of which find various uses under the trade name CELLIT as coating aids.
  • the mixtures of oxidizing, reducing and binding agents can optionally contain further additives.
  • substances are used as such that are suitable for regulating combustion.
  • compounds which influence the decomposition of peroxides such as metals or their oxides, in particular manganese dioxide, come into question for this purpose.
  • Additions of vanadium pentoxide or cerium dioxide lead to a change in the reaction rate.
  • molybdenum (VI) oxide is added, the reaction speed changed little, as in the presence of cerium (III) nitrate hexahydrate.
  • Other catalysts are metal complexes, of which ferrocene and / or its derivatives are mentioned here by way of example, the addition of which increases the reaction rate significantly by up to about 3% by weight.
  • the ignition mixtures according to the invention can be produced, for example, in such a way that the components of the ignition mixture, namely the oxidizing agent and reducing agent, are introduced together with the additives in a mixing container.
  • the polymeric binder is then mixed into this mixture.
  • the polymeric binder can be mixed in, for example, in such a way that the binder is dissolved or suspended in a solvent and this solution is distributed in the mixture of the above constituents and, if appropriate, in other additives.
  • the solvent used must of course be inert to the blowing agents and should have a good dissolving power for the binder.
  • the amount to be used depends on the solvency and the gelling ability of the polymeric binder used with the solvent in question. It is preferably chosen so that the binder forms a gel which, after kneading under the above components of the ignition mixture, forms a tough, doughy mass with the latter.
  • the mixture of oxidizing agent, reducing agent, binder and additives obtained in this way is preferably extruded or extruded after homogenization.
  • the emerging strand material is freed from the solvent by known methods and comminuted as required.
  • An alternative, likewise preferred embodiment for the preparation of the binder-bound igniter mixtures consists in their granulation. This can be done, for example, in such a way that the oxidizing agents and reducing agents are added to a solution of the binder in a solvent and are finely divided by stirring.
  • a non-solvent for example water, the binder precipitates and envelops the components of the ignition mixture.
  • suitable temperature control and process control products can be obtained which, after separation of the solid-liquid phase and subsequent drying, can be processed into free-flowing, non-dusting and easily metered granules.
  • a mixture of 500 g of nitrocellulose, dissolved in 4 l of acetone with 10 g of Centralit I, 3.75 kg of tungsten trioxide and 1.25 kg of aluminum powder was prepared in a kneader. The mass was pressed through a perforated plate and the strands were cut to the desired length with a rotating knife.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Air Bags (AREA)

Abstract

L'invention a pour objet un mélange d'allumage exempt d'explosif d'amorçage, renfermant des substances cédant de l'oxygène, choisies à partir de peroxydes métalliques des éléments ci-après: calcium, magnésium, strontium et/ou zinc, des oxydes métalliques des éléments ci-après: étain, tungstène et/ou molybdène, et/ou des nitrates d'ammonium, de guanidine, d'aminoguanidine, de triaminoguanidine, de dicyanodiamidine et des éléments ci-après: sodium, potassium, magnésium, calcium et/ou fer, et des réducteurs connus en soi.
PCT/EP1996/005707 1995-12-23 1996-12-19 Melange d'allumage exempt d'explosif d'amorçage WO1997023434A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995148544 DE19548544A1 (de) 1995-12-23 1995-12-23 Initialsprengstoff-freie Anzündmischung
DE19548544.0 1995-12-23

Publications (1)

Publication Number Publication Date
WO1997023434A1 true WO1997023434A1 (fr) 1997-07-03

Family

ID=7781287

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/005707 WO1997023434A1 (fr) 1995-12-23 1996-12-19 Melange d'allumage exempt d'explosif d'amorçage

Country Status (2)

Country Link
DE (1) DE19548544A1 (fr)
WO (1) WO1997023434A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1866264A1 (fr) * 2005-04-05 2007-12-19 General Dynamics Ordnance and Tactical Systems - Canada Inc. Compositions de traceur ir metalliques-sans metaux, non toxiques, contenant un peroxyde de zinc, et projectiles a traceur ir les contenant utilises pour generer une trace ir de faible visibilite

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ299764B6 (cs) * 1996-07-20 2008-11-19 Delphi Technologies, Inc. Systém pro výrobu plynu v generátoru plynu a použití tohoto systému
US6453816B2 (en) 1996-07-20 2002-09-24 Dynamit Nobel Gmbh Explosivstoff-Und Systemtechnik Temperature fuse with lower detonation point
DE19805539A1 (de) * 1998-02-11 1999-08-12 Lell Peter Dipl Ing Dr Alternative Anzündverfahren für pyrotechnische Baugruppen
DE19807598A1 (de) * 1998-02-11 1999-10-21 Lell Peter Alternative Anzündverfahren
US6165296A (en) * 1999-02-02 2000-12-26 Autoliv Development As Gas generant igniter composition and method
US6086693A (en) * 1999-02-02 2000-07-11 Autoliv Asp, Inc. Low particulate igniter composition for a gas generant
WO2001040144A2 (fr) * 1999-12-03 2001-06-07 Dynamit Nobel Gmbh Moyens de mise a feu pour poudres pour charge propulsive
DE20010154U1 (de) * 2000-06-07 2000-09-07 TRW Airbag Systems GmbH & Co. KG, 84544 Aschau Anzündmischung zur Verwendung in Gasgeneratoren
US6605167B1 (en) 2000-09-01 2003-08-12 Trw Inc. Autoignition material for a vehicle occupant protection apparatus
DE60128128T2 (de) 2000-10-26 2007-12-13 Smg Technologies Africa (Pty) Ltd. Metall und metalloxyd enthaltendes granulat und verfahren zur herstellung

Citations (16)

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Publication number Priority date Publication date Assignee Title
GB275021A (en) * 1926-08-09 1927-08-04 Vickers Ltd Improvements in or relating to combustible compositions for pyrotechnic, smoke and flame producing, and other like purposes
US2115047A (en) * 1936-11-30 1938-04-26 Stevenson Thomas Tracer ammunition and to an igniter mixture for tracer compositions
US3088857A (en) * 1958-11-26 1963-05-07 Nicholas M Matusewicz Tracer mechanism
US3499386A (en) * 1962-11-29 1970-03-10 Dynamit Nobel Ag Primer
FR2015074A1 (fr) * 1968-08-05 1970-04-24 Dynamit Nobel Ag
US3634153A (en) * 1970-02-03 1972-01-11 Us Army Noncorrosive pyrotechnic composition
EP0031045A2 (fr) * 1979-12-22 1981-07-01 Hüls Troisdorf Aktiengesellschaft Utilisation du peroxyde de zinc comme oxydant pour explosifs et compositions pyrotechniques
DE3243425A1 (de) * 1982-11-24 1984-05-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Anzuendmittel fuer treibladungen
US4464989A (en) * 1983-05-13 1984-08-14 The United States Of America As Represented By The United States Department Of Energy Integral low-energy thermite igniter
EP0310580A2 (fr) * 1987-09-29 1989-04-05 Swedish Ordnance - Ffv/Bofors Ab Procédé pour la préparation d'une charge pyrotechnique
US5145106A (en) * 1989-08-03 1992-09-08 Erico International Corporation Welding apparatus and method
EP0519485A1 (fr) * 1991-06-21 1992-12-23 Dynamit Nobel Aktiengesellschaft Propellent pour générateurs de gaz
DE4301794C1 (de) * 1993-01-23 1994-05-26 Temic Bayern Chem Airbag Gmbh Airbag-Gasgenerator mit einem Selbstzündmittel
DE9416112U1 (de) * 1993-10-06 1994-12-15 Contec - Chemieanlagen GmbH, 84544 Aschau Gasgeneratortreibstoff
EP0656332A1 (fr) * 1993-11-09 1995-06-07 Schweizerische Eidgenossenschaft vertreten durch die SM Schweizerische Munitionsunternehmung der Gruppe für Rüstungsdienste Amorçage à percussion pour armes à feu portatives, procédé pour sa préparation ainsi que son application
EP0663376A1 (fr) * 1993-12-17 1995-07-19 Giat Industries Composition incendiaire et projectile incendiaire dispersant une telle composition

Family Cites Families (5)

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DE3105060C1 (de) * 1981-02-12 1982-09-30 Diehl GmbH & Co, 8500 Nürnberg Zündstoffmischung ohne Initialsprengstoff und Anordnung der Zündstoffmischung in einem Geschoß
DE3245907C2 (de) * 1982-12-11 1986-10-30 Diehl GmbH & Co, 8500 Nürnberg Verfahren zur Herstellung eines Brandmittel-Gemisches und dessen Verwendung in Munitionen
DE3321943A1 (de) * 1983-06-18 1984-12-20 Dynamit Nobel Ag, 5210 Troisdorf Blei- und bariumfreie anzuendsaetze
DE3841690A1 (de) * 1988-12-10 1990-06-13 Diehl Gmbh & Co Anzuendmischung
JP3543347B2 (ja) * 1994-01-24 2004-07-14 日本油脂株式会社 点火薬造粒物の製造方法

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB275021A (en) * 1926-08-09 1927-08-04 Vickers Ltd Improvements in or relating to combustible compositions for pyrotechnic, smoke and flame producing, and other like purposes
US2115047A (en) * 1936-11-30 1938-04-26 Stevenson Thomas Tracer ammunition and to an igniter mixture for tracer compositions
US3088857A (en) * 1958-11-26 1963-05-07 Nicholas M Matusewicz Tracer mechanism
US3499386A (en) * 1962-11-29 1970-03-10 Dynamit Nobel Ag Primer
FR2015074A1 (fr) * 1968-08-05 1970-04-24 Dynamit Nobel Ag
US3634153A (en) * 1970-02-03 1972-01-11 Us Army Noncorrosive pyrotechnic composition
EP0031045A2 (fr) * 1979-12-22 1981-07-01 Hüls Troisdorf Aktiengesellschaft Utilisation du peroxyde de zinc comme oxydant pour explosifs et compositions pyrotechniques
DE3243425A1 (de) * 1982-11-24 1984-05-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Anzuendmittel fuer treibladungen
US4464989A (en) * 1983-05-13 1984-08-14 The United States Of America As Represented By The United States Department Of Energy Integral low-energy thermite igniter
EP0310580A2 (fr) * 1987-09-29 1989-04-05 Swedish Ordnance - Ffv/Bofors Ab Procédé pour la préparation d'une charge pyrotechnique
US5145106A (en) * 1989-08-03 1992-09-08 Erico International Corporation Welding apparatus and method
EP0519485A1 (fr) * 1991-06-21 1992-12-23 Dynamit Nobel Aktiengesellschaft Propellent pour générateurs de gaz
DE4301794C1 (de) * 1993-01-23 1994-05-26 Temic Bayern Chem Airbag Gmbh Airbag-Gasgenerator mit einem Selbstzündmittel
DE9416112U1 (de) * 1993-10-06 1994-12-15 Contec - Chemieanlagen GmbH, 84544 Aschau Gasgeneratortreibstoff
EP0656332A1 (fr) * 1993-11-09 1995-06-07 Schweizerische Eidgenossenschaft vertreten durch die SM Schweizerische Munitionsunternehmung der Gruppe für Rüstungsdienste Amorçage à percussion pour armes à feu portatives, procédé pour sa préparation ainsi que son application
EP0663376A1 (fr) * 1993-12-17 1995-07-19 Giat Industries Composition incendiaire et projectile incendiaire dispersant une telle composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1866264A1 (fr) * 2005-04-05 2007-12-19 General Dynamics Ordnance and Tactical Systems - Canada Inc. Compositions de traceur ir metalliques-sans metaux, non toxiques, contenant un peroxyde de zinc, et projectiles a traceur ir les contenant utilises pour generer une trace ir de faible visibilite
EP1866264A4 (fr) * 2005-04-05 2009-07-01 Gen Dynamics Ordnance & Tactic Compositions de traceur ir metalliques-sans metaux, non toxiques, contenant un peroxyde de zinc, et projectiles a traceur ir les contenant utilises pour generer une trace ir de faible visibilite

Also Published As

Publication number Publication date
DE19548544A1 (de) 1997-06-26

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