EP1089955B1 - Procede de production de jeux pyrotechniques d'amorce - Google Patents

Procede de production de jeux pyrotechniques d'amorce Download PDF

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Publication number
EP1089955B1
EP1089955B1 EP99926266A EP99926266A EP1089955B1 EP 1089955 B1 EP1089955 B1 EP 1089955B1 EP 99926266 A EP99926266 A EP 99926266A EP 99926266 A EP99926266 A EP 99926266A EP 1089955 B1 EP1089955 B1 EP 1089955B1
Authority
EP
European Patent Office
Prior art keywords
process according
dispersing agent
components
metal
pyrotechnic
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
EP99926266A
Other languages
German (de)
English (en)
Other versions
EP1089955A1 (fr
Inventor
Uwe Krone
Dirk Cegiel
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.)
Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG
Original Assignee
Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG
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 Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG filed Critical Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG
Publication of EP1089955A1 publication Critical patent/EP1089955A1/fr
Application granted granted Critical
Publication of EP1089955B1 publication Critical patent/EP1089955B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • 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
    • C06B21/0008—Compounding the ingredient
    • 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
    • C06B33/06—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 an inorganic oxygen-halogen salt
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C9/00—Chemical contact igniters; Chemical lighters

Definitions

  • the invention relates to a method for manufacturing of pyrotechnic primers based on metal powders or metal hydrides, potassium perchlorate and binders.
  • Pyrotechnic igniters are mixtures of solid substances in mostly powdery state, the components of which are mainly consist of reducing agents and oxidizing agents.
  • reducing agents e.g. reducing agents
  • oxidizing agents e.g. reducing agents
  • a redox process is initiated: the pyrotechnic charge burns depending on the structure and arrangement more or less violently.
  • Pyrotechnic igniters are widely used and e.g. as match heads of matches, in luminous and Signal ammunition, in smoke and fog bodies, in gas generators, e.g. for safety air cushions (airbags) and in numerous different arrangements used in fireworks.
  • Pyrotechnic primers are usually manufactured by dry mixing the individual components. happens this by hand, so the crushed components pressed through sieves and mixed. With machine The components of the pyrotechnic primer will be mixed possibly unmixed after previous grinding filled in containers and in this by stirrers, rotary movements of the mixing container or applying shear forces Facilities mixed homogeneously. As mixing devices Tumble mixer, tetrahedron mixer, planetary mixer or from it derived and combined mixers used.
  • Pyrotechnic primers are often used as granules, because they pour and dose better in this form to let.
  • the granulation is done by adding a suitable one Solvent for dry primer and mixing in Special containers.
  • the solvent can already bind the binder dissolved or the binder component, which with the solvent is swellable or soluble in it already in powder form in the pyrotechnic sentence, so that Adhesive forces develop when the solvent is added can eventually lead to the form of granules.
  • special granule mixers are provided for training In the granulate form. Subsequent drying removes the solvent removed so that you get a meterable bulk.
  • Another difficulty with this method is dimensioning the amount of liquid.
  • the invention has for its object a method for Manufacture of pyrotechnic primers of the type in question Specify the way in which the components used are homogeneous are mixed, at the same time the risk of triggering the mixture significantly reduced and a reproduced dosage is made possible.
  • the individual components for the pyrotechnic Ignition charge with the help of suitable liquid dispersants made several homogeneous suspensions that didn't or are only slightly explosive. These suspensions are mixed in small quantities using ultrasound. The mixture is immediately in this consistency for the lighter in the desired amount e.g. dosed in lighter or on ignition elements, after which from the metered amount the dispersion medium are removed.
  • the little or not explosive Suspensions mixed in batches in small quantities and dosed immediately after this mixing e.g. in the housing of an airbag lighter.
  • the liquid mixture is preserved so that Cracks and voids are avoided and the ignition properties of the lighter are reproducible.
  • the grain sizes of the solids used i.e. metal powder or metal hydrides and the potassium perchlorate are here smaller than 50 ⁇ m, preferably smaller than 20 ⁇ m.
  • the invention can by a suitable amount of dispersant both an optimal mixing of the components as well as a suitable viscosity of the suspension for that subsequent dosing can be achieved.
  • the homogeneous distribution of the components in the suspension required energy is introduced into the mixture by cavitation.
  • the cavitation is preferred by ultrasound with frequencies generated greater than 16 kHz.
  • With the implosion of the by Cavitation gas bubbles can reach temperatures of approx. 5500 ° C and pressures up to 500 bar can be reached.
  • Rapidity of gas bubble disintegration in a period of time of less than 1 ⁇ s and due to the small size of the Gas bubbles, which are usually smaller than 150 ⁇ m, are Cooling rate at implosion so high that the warming the suspension remains negligible.
  • the chemical Effects of ultrasound have been reported by K. S. Suslick in the magazine Spektrum dermaschine, Issue 4, pages 60ff, 1989, here essentially Aspects of liquid and solid sonochemistry Surfaces as well as suspended particles were examined.
  • the components can be mixed directly in the container from which subsequently is also metered to the preparation of the dispersion. This is e.g. through the use of appropriately shaped sonotrodes, very possible.
  • the mixtures are e.g. in cartridges or cartridges, which are then placed in a dosing device be used.
  • the liquid mixtures will be then with light pressure or by vacuum, e.g. in prepared Ignition housing or dosed on ignition elements.
  • the mixing room can be with a sonotrode connection or be provided with a mechanical sonotrode contact.
  • the per se dangerous Mix made only as much as for one or a few lighters is needed.
  • the production can then be mechanically more economical in one for series production suitable high clock sequence can be controlled.
  • a composition of the ignition charge from potassium perchlorate, Zirconium powder, a binder and a solvent selected then two suspension-like premixes can be produced that are not or only slightly explosive are, as a component that in the solvent dispersed potassium perchlorate and as a second component the zirconium powder dispersed in the solvent, the Binder is already dissolved in the solvent.
  • the primers e.g. by drying the rest Dispersion medium freed and further processing fed.
  • the ratio of solid to dispersant is variable and experience has shown that it is in the range of 70% to 80% solids.
  • the metal used is preferably titanium or zirconium or their Hydride used.
  • the binder is preferably made from the Group of fluorinated polymeric aliphates selected.
  • the dispersant preferably acts as a solvent for the binder and preferably comes from the series of aliphatic Ketones. Acetone or methyl ethyl ketone have been used for this proven.

Landscapes

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

Claims (10)

  1. Procédé de fabrication de jeux pyrotechniques d'amorce, à base de poudres métalliques ou de poudres d'hydrures métalliques, de perchlorate de potassium et de liants, caractérisé en ce que des suspensions sont réalisées à partir des composants du jeu d'amorce à l'aide d'agents de dispersion liquides présentant peu ou pas de dangers d'explosion, en ce que ces suspensions sont mélangées par l'emploi d'ultrasons, en ce que, immédiatement après mélange, le mélange dans cette consistance est dosé en une quantité souhaitée, et en ce que ensuite les agents de dispersion sont enlevés de la quantité dosée.
  2. Procédé selon la revendication 1, caractérisé en ce que les suspensions sont mélangées par l'emploi d'ultrasons dans la quantité désirée directement dans un boítier renfermant le jeu pyrotechnique d'amorce.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les composants en poudre utilisés de métal, d'hydrure métallique et de perchlorate de potassium ont une taille de grain < 50 µm, de préférence < 20 µm.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que du titane ou du zirconium, ou leurs hybrides sont utilisés en tant que métal.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que le liant est choisi parmi le groupe des polymères aliphatiques fluorés.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'agent de dispersion agit comme moyen dissolvant pour le liant.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'agent de dispersion est choisi dans la série des cétones aliphatiques.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'agent de dispersion utilisé est de l'acétone ou du méthyl-éthyl-cétone.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que le mélange subit des oscillations lors du dosage.
  10. Procédé selon la revendication 9, caractérisé en ce que des ondes sonores sont portées dans le mélange.
EP99926266A 1998-05-28 1999-04-16 Procede de production de jeux pyrotechniques d'amorce Expired - Lifetime EP1089955B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19823999 1998-05-28
DE19823999A DE19823999C2 (de) 1998-05-28 1998-05-28 Verfahren zur Herstellung von pyrotechnischen Anzündern
PCT/DE1999/001160 WO1999061394A1 (fr) 1998-05-28 1999-04-16 Procede de production de jeux pyrotechniques d'amorce

Publications (2)

Publication Number Publication Date
EP1089955A1 EP1089955A1 (fr) 2001-04-11
EP1089955B1 true EP1089955B1 (fr) 2002-08-21

Family

ID=7869260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99926266A Expired - Lifetime EP1089955B1 (fr) 1998-05-28 1999-04-16 Procede de production de jeux pyrotechniques d'amorce

Country Status (9)

Country Link
US (1) US6783616B1 (fr)
EP (1) EP1089955B1 (fr)
JP (1) JP2002516250A (fr)
KR (1) KR100570574B1 (fr)
AT (1) ATE222580T1 (fr)
AU (1) AU752432B2 (fr)
CA (1) CA2332903A1 (fr)
DE (2) DE19823999C2 (fr)
WO (1) WO1999061394A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111393238A (zh) * 2020-04-03 2020-07-10 江西省冠天科技有限公司 一种能实现安全生产、贮运和燃放的烟花

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KR100436568B1 (ko) * 2001-11-09 2004-06-19 국방과학연구소 미세 과염소산칼륨이 포함된 혼합화약의 초음파를 이용한제조방법
US6941868B2 (en) * 2003-06-26 2005-09-13 Autoliv Asp, Inc. Single increment initiator charge
US6905562B2 (en) * 2003-09-04 2005-06-14 Autoliv Asp, Inc. Low density slurry bridge mix
FR2861389B1 (fr) * 2003-10-22 2006-03-10 Davey Bickford Composition pyrotechnique faiblement sensible a l'electricite statique et aux ultrasons.
JP4473818B2 (ja) * 2005-12-28 2010-06-02 昭和金属工業株式会社 イニシエータ用点火薬とその製造方法及びそれを用いたイニシエータの製造方法
US20100294113A1 (en) * 2007-10-30 2010-11-25 Mcpherson Michael D Propellant and Explosives Production Method by Use of Resonant Acoustic Mix Process
SG186824A1 (en) * 2010-07-15 2013-02-28 Nippon Kayaku Kk Ignition powder composition for igniter
US8657894B2 (en) 2011-04-15 2014-02-25 Longyear Tm, Inc. Use of resonant mixing to produce impregnated bits
CN103524279A (zh) * 2013-09-22 2014-01-22 安徽省无为县花炮总厂 一种烟花的配方
RU2663047C1 (ru) * 2017-04-04 2018-08-01 Акционерное общество "Научно-производственное предприятие "Краснознамёнец" Способ изготовления пиротехнических составов
CN108863687B (zh) * 2018-09-04 2020-12-25 南京理工大学 一种基于微流控技术的纳米炸药制备系统和方法
CN112898105A (zh) * 2021-02-09 2021-06-04 北京理工大学 一种无硫无氮耐高温环保烟花发射药及其制备方法
CN215676697U (zh) * 2021-09-23 2022-01-28 李亮 一种具有金属花效果的砂炮

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Publication number Priority date Publication date Assignee Title
CN111393238A (zh) * 2020-04-03 2020-07-10 江西省冠天科技有限公司 一种能实现安全生产、贮运和燃放的烟花
CN111393238B (zh) * 2020-04-03 2022-01-18 朱炳强 一种能实现安全生产、贮运和燃放的烟花

Also Published As

Publication number Publication date
DE59902415D1 (de) 2002-09-26
DE19823999C2 (de) 2002-07-18
EP1089955A1 (fr) 2001-04-11
DE19823999A1 (de) 1999-12-09
CA2332903A1 (fr) 1999-12-02
JP2002516250A (ja) 2002-06-04
AU752432B2 (en) 2002-09-19
KR100570574B1 (ko) 2006-04-12
WO1999061394A1 (fr) 1999-12-02
AU4358499A (en) 1999-12-13
KR20010052391A (ko) 2001-06-25
ATE222580T1 (de) 2002-09-15
US6783616B1 (en) 2004-08-31

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