EP2646400A2 - Mélange pyrotechnique exempt de perchlorate - Google Patents

Mélange pyrotechnique exempt de perchlorate

Info

Publication number
EP2646400A2
EP2646400A2 EP11787794.4A EP11787794A EP2646400A2 EP 2646400 A2 EP2646400 A2 EP 2646400A2 EP 11787794 A EP11787794 A EP 11787794A EP 2646400 A2 EP2646400 A2 EP 2646400A2
Authority
EP
European Patent Office
Prior art keywords
mixture
pyrotechnic
weight
binary
lightning effects
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.)
Withdrawn
Application number
EP11787794.4A
Other languages
German (de)
English (en)
Inventor
Julia Strenger
Dirk Cegiel
Christopher Zimmermann
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 EP2646400A2 publication Critical patent/EP2646400A2/fr
Withdrawn legal-status Critical Current

Links

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
    • C06B33/12—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 the material being two or more oxygen-yielding compounds
    • C06B33/14—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 the material being two or more oxygen-yielding compounds at least one being an inorganic nitrogen-oxygen salt
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C15/00—Pyrophoric compositions; Flints

Definitions

  • the invention is concerned with the provision of perchlorate-free, binary and ternary inorganic oxidizing agent mixtures and pulverulent pyrotechnic mixtures to be produced therewith, which, when used in pyrotechnic articles and / or ammunitions, preferably serve to produce blast and / or lightning effects.
  • Established pyrotechnic mixtures for the production of blast and / or lightning effects are z.
  • black powder mixtures of potassium perchlorate with metal powders or mixtures of barium nitrate with metal powders optionally with the addition of sulfur.
  • barium peroxide-based pyrotechnic mixtures to produce blast and / or lightning effects in military applications no longer meets the requirements due to the lack of handling safety in the extended temperature range.
  • High-performance blends of potassium perchlorate with metal powders such as aluminum, magnesium or alloys thereof are particularly suitable for generating high sound pressure outputs in so-called irritation bodies.
  • these sets are characterized by their handling safety and storage stability. Among other things, this is due to the temperature stability and low water solubility of the potassium perchlorate which serves as the oxidizing agent.
  • US Pat. No. 7,578,895 A proposes perchlorate-free flash bang sets including their production and mixing methods for use in pyrotechnic practice ammunition.
  • These flash-bang sets consist of 45.0% by weight to 60.0% by weight of potassium nitrate as oxidizing agent, 0.5% by weight to 1.5% by weight of boric acid as pH stabilizer, 0, 2 wt .-% to 0.8 wt .-% of an anti-caking agent, preferably silica, 35.0 wt .-% to 45.0 wt .-% aluminum powder as a metallic fuel, 5.0 wt .-% to 10.0 %
  • a non-metallic fuel preferably sulfur, about 0.5% by weight of carbon or graphite and 0% to 10.0% by weight of a "ballistic accelerator” such as black powder, nitrocellulose or a commercially available one single- or double-base propellant charge powder.
  • the object of the invention is to provide a perchlorate-free, powdery pyrotechnic mixture which meets the new requirements.
  • the aim of the present invention is thus the provision of novel perchlorate-free, powdery pyrotechnic mixture systems, which, installed in pyrotechnic articles and / or ammunition, for generating bang and / or lightning effects Performance retention and / or enhancement and improved impact sensitivity.
  • US 2002/0023699 A1 introduces pyrotechnic mixtures which may contain as oxidizing agent a mixture of potassium nitrate, manganese dioxide and another metal oxide.
  • the fuel used is an organic, nitrogen-containing compound.
  • a metal oxide is proposed.
  • the catalytic properties for the conversion of said noxious gases into carbon dioxide and nitrogen are considered. Any oxidizing properties of the metal oxide or oxides will not be discussed further.
  • metal oxides are also known as an oxidizing agent in pyrotechnic Thermit-, delay and / or igniter.
  • binary mixtures of many metal oxides with elemental fuels, such as base metal powders or boron tend to show moderate burn-off behavior with the release of large amounts of heat.
  • memengen as it is often used in thermic sets.
  • Some oxides, such as, for example, manganese dioxide or manganese react comparatively more vigorously in admixture with other pyrotechnic components and are preferably used in delaying or igniting charges.
  • some other metal oxides are able to increase the reduced ignitability when mixing the alkali metal or alkaline earth metal nitrates with metal powders in comparison to the system with potassium perchlorate / metal powder.
  • those metal oxides are suitable which partially split off oxygen when the energy is supplied and / or lower the ignition temperature of the pyrotechnic Automatabmischung (oxidant mixture plus fuel) over the corresponding binary mixtures (nitrate component plus fuel or metal oxide plus fuel).
  • Manganese dioxide is known as an additive that increases the ignitability of pyrotechnic charges, but so far has not been used in blends to produce blast and / or lightning effects.
  • the metal oxides used in flash kits are reducible to metals with low boiling temperatures. This is done according to the invention deviating from the requirements in thermite sets.
  • manganese dioxide When manganese dioxide is used as a performance-enhancing additive, it is possible to partially replace pressurized binary systems made of an alkali metal or alkaline earth metal nitrate and a metallic fuel with manganese dioxide. Depending on the proportion of manganese dioxide, this results in different, strongly oxygen-over-balanced mixtures.
  • Table 1 Examples 2 to 4 are listed for the performance enhancing supplement to the strontium nitrate / aluminum system.
  • the alkali or alkaline earth metal nitrates are partially replaced by manganese oxides while the metallic fuel content is maintained in the range of 23% to 30% by weight (Tables 1 and 2, Example 5 and Table 2, Example 7) ). Furthermore, it has been shown that a large number of metal oxides by integration into binary pyrotechnic mixtures of an alkali metal or alkaline earth metal nitrate and an elementary inorganic fuel are generally suitable for increasing the performance.
  • Example Blends 3 to 5 show that the use of manganese dioxide as the oxidizer component in totalized stock blends (Example 5) results in significantly higher performance than the mere addition of the same to blended binary blends of a nitrate and an inorganic fuel.
  • metal oxides to increase the performance of blends of the nitrates of an alkali or alkaline earth metal with an elemental inorganic fuel is given.
  • binary inorganic oxidizer mixtures based on a nitrate, preferably an alkali or alkaline earth metal nitrate and a metal oxide, preferably manganese dioxide, in suitably balanced pyrotechnic mixtures (assuming reduction of the metal oxide to elemental metal) to produce blast and / or flash effects is forward-looking.
  • non-metal oxides such as boron oxide, silicon dioxide or iodine (V) oxide can be used as potential performance enhancer or oxidizer component, but with the exception of the iodine (V) oxide, the performance enhancing effect due to the low heat of these Thermitre force should be negligible ,
  • the group HIB metal oxides are in any case unsuitable for this application since they can not be prepared metallothermally.
  • metal and non-metal oxides which are suitable in principle, it is also possible to use "masked" metal oxides in the form of carbonyl compounds, carbonates or oxalates, which readily decompose into the corresponding oxides upon introduction of heat, for example the carbonyl compounds of the metals of group VIB, Manganese (II) carbonate, manganese (II) oxalate, iron (II) carbonate, iron (II) oxalate or copper (II) carbonate.
  • metals of group VIB Manganese (II) carbonate, manganese (II) oxalate, iron (II) carbonate, iron (II) oxalate or copper (II) carbonate.
  • reactive metal oxides whose thermite mixtures have a comparatively low ignition temperature and / or are easily reacted with heat supply with elimination of oxygen (usually associated with disproportionation) are also suitable for an additional increase in the ignition sensitivity.
  • dio xide of lead and manganese and, where appropriate, those of molybdenum and tungsten.
  • the oxides of manganese are of primary interest for practical applications.
  • the performance of this novel group of flash bang sets can be controlled by varying the nitrate component used, the metal oxide (s) used, and by varying the fuel used.
  • a preferred composition of this novel group of flash pops consists of a binary oxidant mixture of an alkali or alkaline earth metal nitrate and a metal oxide of a total of 50.0 wt% to 85.0 wt%, an elemental inorganic fuel or a mixture or an alloy of elemental inorganic fuels of a total of 15.0 wt .-% to 40.0 wt .-% and graphite in amounts of 3 wt .-% to 5 wt .-%.
  • the preferred metal oxide is manganese dioxide
  • the preferred inorganic fuels are aluminum, boron, magnesium and titanium, or blends or alloys thereof.
  • zirconium as a fuel is deliberately omitted here for reasons of handling safety.
  • the proposed powdery pyrotechnic mixture is thus distinguished by the fact that it contains no chlorate- and / or perchlorate-containing compound as the oxidizing agent and no sulfur or a sulfur-containing compound as a fuel.
  • a further increase in performance of these novel flash bang sets can be additionally increased by the addition of up to 25 wt .-% of a "ballistic accelerator" in the form of a stabilized nitrocellulose or a nitrocellulose based propellant charge powder.This resulted in an increase in performance of approx 5 dB.
  • these novel flash pop sets may also have another component up to 5% by weight in the form of a processing aid or stabilizer.
  • a processing aid or stabilizer may be oxides of aluminum, silicon or titanium or boron nitride or magnesium or zinc stearate or a substituted urea derivative, preferably arkadite II.
  • the present solution realizes the provision of a perchlorate-free pyrotechnic mixture system, which is installed in an irritation body, preferably with top and bottom relief wells, capable of sound pressure ratings of 170 dB to 185 dB at distances of 1, 2m to about 2.0m to provide.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un mélange pyrotechnique en poudre composé de 50,0 % en poids à 85,0 % en poids au total d'un mélange oxydant inorganique binaire ou ternaire comprenant un ou de deux oxydes métalliques et un nitrate; de 15% en poids à 40,0 % en poids au total d'un combustible inorganique élémentaire ou d'un mélange de combustibles inorganiques élémentaires, de 0,0 % en poids à 25,0% en poids d'une nitrocellulose stabilisée ou d'une poudre propulsive à base de nitrocellulose, de 0,0% en poids à 5,0% en poids de graphite, et éventuellement de 0,0 % en poids à 5,0% en poids d'un autre additif. Le mélange pyrotechnique en poudre est caractérisée en ce qu'il ne contient pas de composés chloratés et/ou perchloratés en tant qu'oxydant, ni de soufre ou de composé soufré en tant que combustible. Ce mélange pyrotechnique proposé est destiné à être utilisé dans des engins pyrotechniques et des munitions pour produire un effet de détonation et/ou d'étincellement.
EP11787794.4A 2010-11-29 2011-11-16 Mélange pyrotechnique exempt de perchlorate Withdrawn EP2646400A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010052628A DE102010052628A1 (de) 2010-11-29 2010-11-29 Perchloratfreie pyrotechnische Mischung
PCT/EP2011/005755 WO2012072198A2 (fr) 2010-11-29 2011-11-16 Mélange pyrotechnique exempt de perchlorate

Publications (1)

Publication Number Publication Date
EP2646400A2 true EP2646400A2 (fr) 2013-10-09

Family

ID=45033921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11787794.4A Withdrawn EP2646400A2 (fr) 2010-11-29 2011-11-16 Mélange pyrotechnique exempt de perchlorate

Country Status (4)

Country Link
US (1) US8888936B2 (fr)
EP (1) EP2646400A2 (fr)
DE (1) DE102010052628A1 (fr)
WO (1) WO2012072198A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130333815A1 (en) 2012-06-13 2013-12-19 Alliant Techsystems Inc. Non-lethal payloads and methods of producing same
CN102898259A (zh) * 2012-09-25 2013-01-30 北京理工大学 一种白色雪花尾组合烟花及其制备方法
JP2016525992A (ja) * 2013-04-25 2016-09-01 フィッシャーヴェルケ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトｆｉｓｃｈｅｒｗｅｒｋｅ ＧｍｂＨ ＆ Ｃｏ． ＫＧ 電気的に点火可能なケースレスの発射薬、その製造方法及び使用
RU2710188C1 (ru) * 2019-08-29 2019-12-24 Акционерное общество "Федеральный научно-производственный центр "Научно-исследовательский институт прикладной химии" Пиротехнический состав белого огня

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FR392903A (fr) * 1908-08-03 1908-12-09 Carl Bethge Procédé de fabrication de compositions pour la production d'éclairs posés et d'effets lumineux
US1708151A (en) * 1924-05-23 1929-04-09 Henry C Pritham Tracer composition
GB435588A (en) * 1934-10-19 1935-09-24 Harcourt Tasker Simpson A new or improved explosive
US3088857A (en) * 1958-11-26 1963-05-07 Nicholas M Matusewicz Tracer mechanism
US3498857A (en) * 1966-12-06 1970-03-03 Ethyl Corp Aluminum iron oxide incendiary composition containing a (cyclopentadienyl) iron compound
US3664898A (en) * 1969-08-04 1972-05-23 Us Navy Pyrotechnic composition
US3702792A (en) * 1971-09-15 1972-11-14 Wasagchemie Ag Novel polybasic propellant
DE2710451C2 (de) 1977-03-10 1990-11-15 Rheinmetall GmbH, 4000 Düsseldorf Oberflächenschutzbeschichtung für Munition mit verbrennbarer Hülse bzw. hülsenlose Munition
DE19581542T1 (de) * 1994-12-21 1999-04-01 Daicel Chem Gaserzeugende Zusammensetzung
DE10107948A1 (de) 2001-02-20 2002-08-22 Rheinmetall W & M Gmbh Verfahren zur Herstellung gießfähiger kunststoffgebundener Sprengladungen oder Raketentreibstoffe
DE10111304C2 (de) 2001-03-09 2003-03-20 Buderus Edelstahlwerke Ag Verfahren zur Herstellung von Rohren für schwere Geschütze
AU2003256246A1 (en) * 2002-02-05 2003-11-17 Greg Carter Jr. Pyrotechnic thermite composition and torch
US6627013B2 (en) * 2002-02-05 2003-09-30 Greg Carter, Jr. Pyrotechnic thermite composition
US7578895B1 (en) * 2004-03-24 2009-08-25 The United States Of America As Represented By The Secretary Of The Army Perchlorate free flash bang compositions for pyrotechnic training rounds
US8161883B1 (en) 2009-07-16 2012-04-24 The United States Of America As Represented By The Secretary Of The Army Flash-bang grenade with greater flash intensity
DE102010020776B4 (de) 2010-05-18 2015-03-05 Diehl Bgt Defence Gmbh & Co. Kg Treibladung und Verfahren zu ihrer Herstellung

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Title
None *
See also references of WO2012072198A2 *

Also Published As

Publication number Publication date
WO2012072198A3 (fr) 2012-08-23
DE102010052628A1 (de) 2012-05-31
US20120132328A1 (en) 2012-05-31
WO2012072198A2 (fr) 2012-06-07
US8888936B2 (en) 2014-11-18

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