DE3542447C2 - Laser-sensitive ignition mixture - Google Patents

Laser-sensitive ignition mixture

Info

Publication number
DE3542447C2
DE3542447C2 DE19853542447 DE3542447A DE3542447C2 DE 3542447 C2 DE3542447 C2 DE 3542447C2 DE 19853542447 DE19853542447 DE 19853542447 DE 3542447 A DE3542447 A DE 3542447A DE 3542447 C2 DE3542447 C2 DE 3542447C2
Authority
DE
Germany
Prior art keywords
weight
mixture
ignition mixture
zirconium
laser
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 - Fee Related
Application number
DE19853542447
Other languages
German (de)
Other versions
DE3542447A1 (en
Inventor
Martin Kloeber
Wolfgang Dipl Chem Schwarz
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.)
Diehl Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Priority to DE19853542447 priority Critical patent/DE3542447C2/en
Publication of DE3542447A1 publication Critical patent/DE3542447A1/en
Application granted granted Critical
Publication of DE3542447C2 publication Critical patent/DE3542447C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/113—Initiators therefor activated by optical means, e.g. laser, flashlight

Description

Die Erfindung bezieht sich auf eine laserempfindliche Anzündmischung.The invention relates to a laser-sensitive ignition mixture.

Aus der US-PS 39 56 991 ist ein lichtempfindlicher Detonator als Bestandteil eines Bomblett-Zünders angegeben. Die Zusammensetzung des Detonators ist jedoch nicht bekannt.From US-PS 39 56 991 is a light-sensitive detonator as a component of a bomblet detonator. The composition of the detonator is not known, however.

Bei der Anzündmischung, die über einen Laser initiierbar ist, kommt es darauf an, daß eine relativ geringe Wärmemenge, die aus der Absorption der Laserstrahlung herrührt, zur Anzündung ausreicht. Wenn diese Forderung erfüllt ist, wird die Entzündung des Satzes nicht verhindert, wenn die optischen Fenster, durch die der Laser eingestrahlt wird, verschmutzt sind. Im feldmäßigen Einsatz können keine großen Energiequellen benutzt werden. Eine geringe Energie muß aber noch zur sicheren Reaktion ausreichen.The ignition mixture, which can be initiated by a laser, comes it indicates that a relatively small amount of heat comes from absorption the laser radiation originates, sufficient for ignition. If this demand is true, the inflammation of the sentence is not prevented if the optical windows through which the laser is irradiated are dirty are. No large energy sources can be used in field use will. A low energy must still be enough for a safe reaction.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Anzündmischung anzugeben, die bei einer verhältnismäßig geringen Entzündungstemperatur durch einen Laser anzündbar ist.The invention is therefore based on the object of specifying an ignition mixture, that at a relatively low ignition temperature can be ignited by a laser.

Die Lösung dieser Aufgabe ist den kennzeichnenden Merkmalen des Anspruches 1 zu entnehmen.The solution to this problem is the characterizing features of claim 1 refer to.

Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben.Advantageous further developments are specified in the subclaims.

Die erfindungsgemäße Anzündmischung zeichnet sich durch einen relativ niedrigen Entzündungspunkt aus. Maßgebend hierfür ist eine Zumischung von Ruß, der die eingestrahlte Energie nahezu vollständig absorbiert und in Wäreme umwandelt. The ignition mixture according to the invention is characterized by a relative low inflammation point. A decisive factor here is an admixture of soot, which almost completely absorbs the radiated energy and converted into heat.  

In dem engen geometrischen Bereich von wenigen mm2, auf den der Laserstrahl auftrifft, muß nicht nur die Energie absorbiert werden, sondern in diesem kleinen Bereich muß auch die richtige Zusammensetzung bestehen, damit die Redoxreaktion initiiert werden kann. Die Korngrößen müssen klein genug sein, damit auch im genannten Bereich die richtige Zusammensetzung anzutreffen ist. Kleinere Teile lassen sich auch wegen ihrer geringen Wärmekapazität leichter auf die Starttemperatur bringen.In the narrow geometrical area of a few mm 2 , on which the laser beam strikes, not only the energy must be absorbed, but also the correct composition must exist in this small area so that the redox reaction can be initiated. The grain sizes must be small enough so that the correct composition can also be found in the range mentioned. Smaller parts can also be brought to the starting temperature more easily because of their low heat capacity.

Mit Kupferoxid oder Vanadiumpentoxid als Katalysator liegt eine leichter zündbare Anzündmischung mit beschleunigter, jedoch konstanter Reaktion der Anzündmischung vor.With copper oxide or vanadium pentoxide as a catalyst more easily ignitable ignition mixture with accelerated but constant Ignition mixture reaction before.

Bei dem Ruß kommt es darauf an, daß er eine möglichst intensive Farbtiefe und ein möglichst niedriges Reflektionsvermögen aufweist. Damit liegt dann eine hohe Absorptionsfähigkeit vor, um Lichtenergie in Wärmeenergie umzuwandeln.It is important for the soot to be as intense as possible Depth of color and the lowest possible reflectivity. Then there is a high absorption capacity, around light energy convert into thermal energy.

Mit einem Rubinlaser bei einer Frequenz von 694,3 nm und einem Energiebereich von 50 bis 500 mJ wurden bei einem Satzgewicht von 30 mg folgende Ergebnisse erreicht:
Die Distanz zwischen dem zu entzündenden Satz und dem Laser betrug 2,5 bis 3,00 m. Die Zielfläche an der Anzündmischung betrug 7 mm2, 12,6 mm2 oder 19,6 mm2.With a ruby laser at a frequency of 694.3 nm and an energy range from 50 to 500 mJ, the following results were achieved with a set weight of 30 mg:
The distance between the set to be lit and the laser was 2.5 to 3.00 m. The target area at the ignition mixture was 7 mm 2 , 12.6 mm 2 or 19.6 mm 2 .

Bei den vorgenannten Anzündmischungen lagen jeweils für das Zirkon Korngrößen von 1,7 µm vor.In the case of the aforementioned ignition mixtures, zirconia was used Grain sizes of 1.7 microns.

Claims (6)

1. Laserempfindliche Anzündmischung, gekennzeichnet durch folgende Bestandteile:
  • a) 10-30 Gew.-% eines sehr heißbrennenden Metallpulvers, ausgewählt aus Zirkonium und Titan oder Bor, mit einer Korngröße <3 µm,
  • b) 60-85 Gew.-% Bleioxid (ausgenommen: PbO) als Oxidationsmittel und
  • c) 1-5 Gew.-% Ruß in Form von Ofen-, Flamm- oder Farbruß.
1. Laser-sensitive ignition mixture, characterized by the following components:
  • a) 10-30% by weight of a very hot-burning metal powder, selected from zirconium and titanium or boron, with a grain size <3 µm,
  • b) 60-85% by weight lead oxide (except: PbO) as an oxidizing agent and
  • c) 1-5 wt .-% carbon black in the form of furnace, flame or color black.
2. Anzündmischung nach Anspruch 1, dadurch gekennzeichnet, daß die Mischung 20 Gew.-% Zirkonium, 76 Gew.-% Bleioxid und 2 Gew.-% Ruß enthält.2. ignition mixture according to claim 1, characterized, that the mixture 20% by weight of zirconium, 76% by weight Contains lead oxide and 2 wt .-% carbon black. 3. Anzündmischung nach Anspruch 1, dadurch gekennzeichnet, daß die Mischung zusätzlich 2-5 Gew.-% Kupferoxid oder Vanadinpentoxid als Katalysator enthält.3. ignition mixture according to claim 1, characterized, that the mixture additionally 2-5 wt .-% copper oxide or contains vanadium pentoxide as a catalyst. 4. Anzündmischung nach Anspruch 3, dadurch gekennzeichnet, daß die Mischung 20 Gew.-% Zirkonium, 76 Gew.-% Bleioxid, 2 Gew.-% Ruß und 2 Gew.-% Kupferoxid enthält. 4. ignition mixture according to claim 3, characterized, that the mixture 20% by weight of zirconium, 76% by weight Contains lead oxide, 2 wt .-% carbon black and 2 wt .-% copper oxide.   5. Anzündmischung nach Anspruch 1, dadurch gekennzeichnet, daß die Mischung 17 Gew.-% Zirkonium, 66 Gew.-% Bleioxid, 2 Gew.-% Ruß und zusätzlich 15 Gew.-% Nitropenta enthält.5. ignition mixture according to claim 1, characterized, that the mixture 17% by weight of zirconium, 66% by weight Lead oxide, 2% by weight of carbon black and an additional 15% by weight of nitropenta contains. 6. Anzündmischung nach Anspruch 1, dadurch gekennzeichnet, daß das in der Mischung enthaltene Zirkonium eine Korngröße von 1,5-2,5 µm aufweist.6. ignition mixture according to claim 1, characterized, that the zirconium contained in the mixture is a Has grain size of 1.5-2.5 microns.
DE19853542447 1985-11-30 1985-11-30 Laser-sensitive ignition mixture Expired - Fee Related DE3542447C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853542447 DE3542447C2 (en) 1985-11-30 1985-11-30 Laser-sensitive ignition mixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853542447 DE3542447C2 (en) 1985-11-30 1985-11-30 Laser-sensitive ignition mixture

Publications (2)

Publication Number Publication Date
DE3542447A1 DE3542447A1 (en) 1987-06-04
DE3542447C2 true DE3542447C2 (en) 1993-11-18

Family

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Family Applications (1)

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DE19853542447 Expired - Fee Related DE3542447C2 (en) 1985-11-30 1985-11-30 Laser-sensitive ignition mixture

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DE (1) DE3542447C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7923662B2 (en) 2004-05-20 2011-04-12 Alexza Pharmaceuticals, Inc. Stable initiator compositions and igniters
US8387612B2 (en) 2003-05-21 2013-03-05 Alexza Pharmaceuticals, Inc. Self-contained heating unit and drug-supply unit employing same

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838896C2 (en) * 1988-11-17 1999-07-01 Dynamit Nobel Ag Laser-initiable ignition / ignition element provided with a storage layer
DE3909952A1 (en) * 1989-03-25 1990-09-27 Dynamit Nobel Ag Fuze/detonator which can be initiated by a laser
WO1999000343A1 (en) * 1997-06-30 1999-01-07 The Ensign-Bickford Company Laser-ignitable ignition composition and initiator devices and assemblies comprising the same
DE19824122A1 (en) * 1998-05-29 1999-12-02 Dynamit Nobel Ag Ignition of the propellant powder of a plastic cartridge, especially for bolt-setting tools
DE19837839A1 (en) * 1998-08-20 2000-02-24 Dynamit Nobel Ag Detonator for explosive material for vehicle airbag or seatbelt tensioner, has laser diode with transparent housing in direct contact with explosive material
DE19949674C1 (en) * 1999-10-14 2001-06-07 Fraunhofer Ges Forschung Propellant charge arrangement for barrel weapons or ballistic drives
US7834295B2 (en) 2008-09-16 2010-11-16 Alexza Pharmaceuticals, Inc. Printable igniters
US20120048963A1 (en) 2010-08-26 2012-03-01 Alexza Pharmaceuticals, Inc. Heat Units Using a Solid Fuel Capable of Undergoing an Exothermic Metal Oxidation-Reduction Reaction Propagated without an Igniter
CN114522152A (en) 2015-03-11 2022-05-24 艾利斯达医药品公司 Use of antistatic materials in airways for hot aerosol condensation processes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3956991A (en) * 1968-10-03 1976-05-18 The United States Of America As Represented By The Secretary Of The Navy Optical, semi-active bomblet fuze
US4391195A (en) * 1979-08-21 1983-07-05 Shann Peter C Detonation of explosive charges and equipment therefor
US4432818A (en) * 1980-08-22 1984-02-21 Hughes Aircraft Company Compositions for use in heat-generating reactions
DE3507399A1 (en) * 1985-03-02 1986-09-04 Diehl GmbH & Co, 8500 Nürnberg Delay composition of lead oxide and boron for igniting and detonating agents

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8387612B2 (en) 2003-05-21 2013-03-05 Alexza Pharmaceuticals, Inc. Self-contained heating unit and drug-supply unit employing same
US8991387B2 (en) 2003-05-21 2015-03-31 Alexza Pharmaceuticals, Inc. Self-contained heating unit and drug-supply unit employing same
US9370629B2 (en) 2003-05-21 2016-06-21 Alexza Pharmaceuticals, Inc. Self-contained heating unit and drug-supply unit employing same
US7923662B2 (en) 2004-05-20 2011-04-12 Alexza Pharmaceuticals, Inc. Stable initiator compositions and igniters

Also Published As

Publication number Publication date
DE3542447A1 (en) 1987-06-04

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8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: F42B 3/113

D2 Grant after examination
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8339 Ceased/non-payment of the annual fee