EP0781260B1 - Ignition elements and finely adjustable ignition compositions - Google Patents

Ignition elements and finely adjustable ignition compositions Download PDF

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Publication number
EP0781260B1
EP0781260B1 EP95932725A EP95932725A EP0781260B1 EP 0781260 B1 EP0781260 B1 EP 0781260B1 EP 95932725 A EP95932725 A EP 95932725A EP 95932725 A EP95932725 A EP 95932725A EP 0781260 B1 EP0781260 B1 EP 0781260B1
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EP
European Patent Office
Prior art keywords
heat
dissipating
ignition
firing element
parts
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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.)
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EP95932725A
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German (de)
French (fr)
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EP0781260A1 (en
Inventor
Günther Faber
Helmut ZÖLLNER
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Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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Priority to EP01103794A priority Critical patent/EP1110928A1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/12—Compositions or products which are defined by structure or arrangement of component of product having contiguous layers or zones
    • C06B45/14—Compositions or products which are defined by structure or arrangement of component of product having contiguous layers or zones a layer or zone containing an inorganic explosive or an inorganic explosive or an inorganic thermic component
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C7/00—Non-electric detonators; Blasting caps; Primers
    • 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 finely graduated primers for Kindling and kindling.
  • igniters and igniters are essentially determined by two factors.
  • the reaction products should be rich in particles if possible and these particles should be as hot as possible
  • a transport gas must be provided for the particles so that the particles penetrate the propellant charge as well as possible.
  • the transport gas should also have a correspondingly high temperature in order to maintain the particle temperature.
  • Igniters and igniters containing a pyrotechnic fuel based on B / KNO 3 or Ti / Ba (NO 3 ) 2 or TiH x / Ba (NO 3 ) 2 with x ⁇ 1 or Zr / Ba (NO 3 ) 2 and nitrocellulose but also igniters and igniters containing zirconium and potassium perchlorate generally meet these requirements.
  • the so-called electrical Characteristic data are the ignition sensitivity (Aze), Ignition insensitivity (Azu) and the ignition delay time (Azvz) of the individual sentences.
  • the insensitivity to ignition says something about safety and ignitability or ignition delay time somewhat above that Ignition sensitivity of the primers.
  • primers with either sufficiently high sensitivity to ignition but with too high values for the ignition sensitivity or the ignition delay time, i.e. with too little Ignition sensitivity or primers with enough low ignition sensitivity and ignition delay time, but not known to be insensitive to ignition.
  • the object of the present invention was to ignite and ignition elements, hereinafter referred to as ignition elements, to provide, in addition to sufficient Performance depending on the application, finely graduated values for the sensitivity to ignition and the sensitivity to ignition exhibit without significantly affecting the ignition delay time becomes.
  • Ignition elements according to claims 1-12, and in particular by the provision and combination of two in their properties different primers.
  • the so-called glow wire set responsible for the electrical characteristics, during the 2nd primer, the so-called benefit rate, is responsible for the Power.
  • the Ensuring high heat dissipation in the filament set is of particular importance.
  • This heat-dissipating additive will selected from substances known to absorb heat can draw heat from the environment. Examples of such substances can be inorganic or also be organic in nature, such as metals, metal compounds or organometallic compounds.
  • metals or metal compounds are provided according to the invention as heat-dissipating components.
  • Zirconium, aluminum, titanium and / or ferrotitanium are preferably used as metals.
  • Zircon is particularly preferred.
  • borides and hydrides of the metals mentioned can be used as metal compounds.
  • Zirconium boride and zirconium hydride are particularly preferred.
  • the glow wire sets of the ignition elements according to the invention contain at least one initial explosive, for example lead azide, diazodinitrophenol, silver azide, tricinate or picrate, preferably lead picrate, and an oxidizing agent, for example alkali metal or alkaline earth metal nitrate, chlorate, perchlorate, preferably KClO 3 and / or KClO 4 , particularly preferably KClO 4 and a binder.
  • the binder is not only responsible for the connection of the individual components, but also for the temperature resistance of the ignition elements; they should have a temperature resistance of> 85 ° C.
  • Binders suitable according to the invention are therefore polyvinyl acetate, polysulfone or polyethersulfone. Polyvinyl acetate is preferably used. While the heat-dissipating additive is intended to increase sensitivity to ignition, the initial explosive used is responsible for ensuring the necessary sensitivity to ignition.
  • Glow wire sets according to the first embodiment which are suitable according to the invention are composed of 20 to 80 parts of initial explosive, preferably lead picrate, 20 to 80 parts of a mixture of heat-dissipating additive and oxidizing agent and 1 to 6 parts of binder. The mixture of heat-dissipating additive and oxidizing agent is composed of 60 to 90 parts of heat-dissipating additive and 10 to 40 parts of oxidizing agent.
  • a heat-dissipating Initial explosive preferably silver azide
  • other heat-dissipating Components such as metals, metal compounds or organometallic compounds provided.
  • metals metal compounds
  • the particular advantage in use of silver azide lies in the fact that it is also known as heat-dissipating additive acts and in its capacity Ignition sensitivity as an initial explosive improved.
  • the glow wire set consists of 100 Parts of silver azide and 1 to 6, preferably 4 parts Binder.
  • Binder As a binder with the same functions as in the first embodiment, it is preferred Polyvinyl acetate used.
  • the power set consists of a component that generates hot reaction particles, one of the oxidizing agents mentioned above and one of the said binding agents.
  • a component that generates hot reaction particles zircon in its different crystal modifications, titanium or their mixtures is suitable.
  • KClO 3 and / or KClO 4 preferably KClO 4
  • the same substances are preferably used as binders as for the filament set.
  • Power sets suitable according to the invention are composed of 30 to 80 parts of zirconium, titanium or mixtures thereof, 20 to 70 parts of oxidizing agent, preferably KClO 4 and 1 to 6 parts of binder.
  • a mixture of 60 parts of zircon, 40 parts of KClO 4 and 4 parts of polyvinyl acetate is preferably used.
  • the ignition elements according to the invention are manufactured for example as follows.
  • the components of the filament set and the benefit rate are sieved and in the binder dissolved in a suitable solvent slurried. If you use polyvinyl acetate as a binder, so butyl acetate is a suitable solvent.
  • This slurry is made submersible, i.e. the viscosity is adjusted accordingly.
  • Ignition elements are generally in shape made from squibs.
  • a common squib consists for example of two electrically conductive, elongated pole supports (lamellae), which by means of a insulating web are connected and one, the pole carrier connecting glow plug.
  • a primer body is immersed several times in the primer slurry in such a way that the 1st primer is the glow plug encloses.
  • the diving process is repeated until the sufficient amount for the respective application Glow wire set mixture is applied.
  • For the 1st primer Amounts of 6 to 10 mg have proven themselves.
  • the solvent given to evaporate After the filament set is in in the same way the power set as a sheath around the filament set upset. For this sentence too Repeat the dive until the one for each Intended use sufficient amount of power rate mix is applied.
  • primer weight for the entire squib have 50 to 100, preferably 65 to 85 mg proven. After the squib was dried for 24 hours the squib is still covered with a 20% varnish coated with the respective binder and again 48 h dried.
  • the primers according to the invention can be used according to the Binders are used in high temperature resistant Ignition elements.
  • Used as a binder for example Polysulfone or polyethersulfone used, can the primers according to the invention at temperatures of up to 250 ° C can be used.
  • the invention Ignition elements are particularly suitable for the Ignition of propellants that have long exposure times hot flame and insensitive propellants, where hot metallic particles are needed become.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Closures For Containers (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The ignition element, consisting of a combination of 2 detonators, comprises a first detonator (hot wire detonator) contg. initiator(s), heat dissipating additive(s), oxidant(s) and a binder, and a second detonator (output detonator) contg. constituent(s) producing hot reaction particles, an oxidant and a binder. Also claimed are a 2-component ignition element in which the first detonator contains a heat-dissipating initiator and opt. a heat dissipating additive; and the first and second detonator per se.

Description

Die Erfindung betrifft fein abstufbare Zündsätze für Anzündmittel und Anzündelemente.The invention relates to finely graduated primers for Kindling and kindling.

Die Wirkung von Anzündmitteln und Anzündelementen wird im wesentlichen von zwei Faktoren bestimmt. Zum einen sollen die Reaktionsprodukte nach Möglichkeit partikelreich sein und diese Partikel möglichst heiß sein, zum anderen muß für die Partikel ein Transportgas bereitgestellt werden, damit die Partikel die Treibladung so gut wie möglich durchdringen. Auch das Transportgas soll eine entsprechend hohe Temperatur aufweisen, um die Partikeltemperatur aufrechtzuerhalten. Anzündmittel und Anzündelemente, die einen pyrotechnischen Brennstoff auf der Basis B/KNO3 oder Ti/Ba(NO3)2 oder TiHx/Ba(NO3)2 mit x<1 oder Zr/Ba(NO3)2 und Nitrocellulose enthalten, aber auch Anzündmittel und Anzündelemente, die Zirkon und Kaliumperchlorat enthalten, erfüllen im allgemeinen diese Anforderungen.The effects of igniters and igniters are essentially determined by two factors. On the one hand, the reaction products should be rich in particles if possible and these particles should be as hot as possible, on the other hand, a transport gas must be provided for the particles so that the particles penetrate the propellant charge as well as possible. The transport gas should also have a correspondingly high temperature in order to maintain the particle temperature. Igniters and igniters containing a pyrotechnic fuel based on B / KNO 3 or Ti / Ba (NO 3 ) 2 or TiH x / Ba (NO 3 ) 2 with x <1 or Zr / Ba (NO 3 ) 2 and nitrocellulose , but also igniters and igniters containing zirconium and potassium perchlorate generally meet these requirements.

Neben diesen grundsätzlichen Leistungsanforderungen sind aber auch andere Eigenschaften, die die Empfindlichkeit und die Sicherheit dieser Anzündmittel und Anzündelemente betreffen, von ganz entscheidender Bedeutung für die Qualität und die Einsetzbarkeit solcher Anzündmittel und Anzündelemente. Diese Eigenschaften, die sogenannten elektrischen Kenndaten sind die Anzündempfindlichkeit (Aze), die Anzündunempfindlichkeit (Azu) und die Anzündverzugszeit (Azvz) der einzelnen Sätze. Hierbei sagt die Anzündunempfindlichkeit etwas über die Sicherheit und die Anzündempfindlichkeit bzw. Anzündverzugszeit etwas über die Zündempfindlichkeit der Zündsätze aus. Bisher sind Zündsätze mit entweder genügend hoher Anzündunempfindlichkeit, dafür aber mit zu hohen Werten für die Anzündempfindlichkeit bzw. die Anzündverzugszeit, d.h. mit zu geringer Zündempfindlichkeit oder Zündsätze mit genügend geringer Anzündempfindlichkeit und Anzündverzugszeit, aber nicht ausreichender Anzündunempfindlichkeit bekannt.In addition to these basic performance requirements but other properties that affect sensitivity and the safety of these igniters and igniters concern, vital for the Quality and applicability of such igniters and Ignition elements. These properties, the so-called electrical Characteristic data are the ignition sensitivity (Aze), Ignition insensitivity (Azu) and the ignition delay time (Azvz) of the individual sentences. Here, the insensitivity to ignition says something about safety and ignitability or ignition delay time somewhat above that Ignition sensitivity of the primers. So far, are primers with either sufficiently high sensitivity to ignition, but with too high values for the ignition sensitivity or the ignition delay time, i.e. with too little Ignition sensitivity or primers with enough low ignition sensitivity and ignition delay time, but not known to be insensitive to ignition.

Aufgabe der vorliegenden Erfindung war es, Anzündmittel und Anzündelemente, im folgenden kurz Anzündelemente genannt, bereitzustellen, die neben einer ausreichenden Leistung je nach Einsatzzweck fein abstufbare Werte für die Anzündempfindlichkeit und die Anzündunempfindlichkeit aufweisen, ohne daß die Anzündverzugszeit wesentlich beeinträchtigt wird.The object of the present invention was to ignite and ignition elements, hereinafter referred to as ignition elements, to provide, in addition to sufficient Performance depending on the application, finely graduated values for the sensitivity to ignition and the sensitivity to ignition exhibit without significantly affecting the ignition delay time becomes.

Erfindungsgemäß gelöst wurde diese Aufgabe durch die Anzündelemente nach den Ansprüchen 1-12, und insbesondere durch die Bereitstellung und Kombination von zwei in ihren Eigenschaften unterschiedlichen Zündsätzen. Hierbei ist der 1. Zündsatz, der sogenannte Glühdrahtsatz, verantwortlich für die elektrischen Kenndaten, während der 2. Zündsatz, der sogenannte Leistungssatz, verantwortlich ist für die Leistung. Es wurde überraschenderweise festgestellt, daß zur Erhöhung der Anzündunempfindlichkeit des Glühdrahtsatzes, ohne Beeinträchtigung der Anzündverzugszeit, die Sicherstellung einer hohen Wärmeableitung im Glühdrahtsatz von besonderer Bedeutung ist. Dies wird erfindungsgemäß durch einen Zusatz erreicht, der in der Lage ist, die Wärme abzuleiten. Dieser wärmeableitende Zusatz wird ausgewählt aus Substanzen, die bekanntermaßen Wärme aufnehmen können und dadurch der Umgebung Wärme entziehen. Beispiele für solche Substanzen können anorganischer oder auch organischer Natur sein, wie Metalle, Metallverbindungen oder metallorganische Verbindungen.According to the invention, this object was achieved by Ignition elements according to claims 1-12, and in particular by the provision and combination of two in their properties different primers. Here is the 1. Ignition charge, the so-called glow wire set, responsible for the electrical characteristics, during the 2nd primer, the so-called benefit rate, is responsible for the Power. It was surprisingly found that to increase the immunity to ignition of the glow wire set, without affecting the ignition delay time, the Ensuring high heat dissipation in the filament set is of particular importance. This is according to the invention achieved by an additive that is able to dissipate the heat. This heat-dissipating additive will selected from substances known to absorb heat can draw heat from the environment. Examples of such substances can be inorganic or also be organic in nature, such as metals, metal compounds or organometallic compounds.

In einer ersten Ausführungsform des Glühdrahtsatzes (Anspruch 1) werden als wärmeableitende Bestandteile erfindungsgemäß Metalle oder Metallverbindungen vorgesehen. Als Metalle finden vorzugsweise Zirkon, Aluminium, Titan und/oder Ferrotitan Verwendung. Besonders bevorzugt ist Zirkon. Als Metallverbindungen können beispielsweise Boride und Hydride der genannten Metalle eingesetzt werden. Besonders bevorzugt ist Zirkonborid und Zirkonhydrid. Neben diesen wärmeableitenden Metallzusätzen enthalten die Glühdrahtsätze der erfindungsgemäßen Anzündelemente mindestens einen Initialsprengstoff, beispielsweise Bleiazid, Diazodinitrophenol, Silberazid, Trizinat oder Pikrat, vorzugsweise Bleipikrat, sowie ein Oxidationsmittel, wie beispielsweise Alkali- oder Erdalkalinitrate, -chlorate, -perchlorate, vorzugsweise KClO3 und/oder KClO4, besonders bevorzugt KClO4 und ein Bindemittel. Das Bindemittel ist nicht nur für die Verbindung der einzelnen Bestandteile, sondern auch für die Temperaturbeständigkeit der Anzündelemente verantwortlich; sie sollen eine Temperaturbeständigkeit von > 85°C aufweisen. Erfindungsgemäß geeignete Bindemittel sind daher Polyvinylacetat, Polysulfon oder Polyethersulfon. Vorzugsweise wird Polyvinylacetat verwendet. Während der wärmeableitende Zusatz die Anzündunempfindlichkeit erhöhen soll, ist der eingesetzte Initialsprengstoff verantwortlich für die Sicherstellung der notwendigen Anzündempfindlichkeit. Erfindungsgemäß geeignete Glühdrahtsätze der ersten Ausführungsform setzen sich zusammen aus 20 bis 80 Teilen Initialsprengstoff, vorzugsweise Bleipikrat, 20 bis 80 Teilen einer Mischung aus wärmeableitendem Zusatz und- Oxidationsmittel und 1 bis 6 Teilen Bindemittel. Die Mischung aus wärmeableitendem Zusatz und Oxidationsmittel setzt sich zusammen aus 60 bis 90 Teilen wärmeableitendem Zusatz und 10 bis 40 Teilen Oxidationsmittel.In a first embodiment of the filament set (claim 1) metals or metal compounds are provided according to the invention as heat-dissipating components. Zirconium, aluminum, titanium and / or ferrotitanium are preferably used as metals. Zircon is particularly preferred. For example, borides and hydrides of the metals mentioned can be used as metal compounds. Zirconium boride and zirconium hydride are particularly preferred. In addition to these heat-dissipating metal additives, the glow wire sets of the ignition elements according to the invention contain at least one initial explosive, for example lead azide, diazodinitrophenol, silver azide, tricinate or picrate, preferably lead picrate, and an oxidizing agent, for example alkali metal or alkaline earth metal nitrate, chlorate, perchlorate, preferably KClO 3 and / or KClO 4 , particularly preferably KClO 4 and a binder. The binder is not only responsible for the connection of the individual components, but also for the temperature resistance of the ignition elements; they should have a temperature resistance of> 85 ° C. Binders suitable according to the invention are therefore polyvinyl acetate, polysulfone or polyethersulfone. Polyvinyl acetate is preferably used. While the heat-dissipating additive is intended to increase sensitivity to ignition, the initial explosive used is responsible for ensuring the necessary sensitivity to ignition. Glow wire sets according to the first embodiment which are suitable according to the invention are composed of 20 to 80 parts of initial explosive, preferably lead picrate, 20 to 80 parts of a mixture of heat-dissipating additive and oxidizing agent and 1 to 6 parts of binder. The mixture of heat-dissipating additive and oxidizing agent is composed of 60 to 90 parts of heat-dissipating additive and 10 to 40 parts of oxidizing agent.

In einer zweiten Ausführungsform des Glühdrahtsatzes (Anspruch 3) wird als wärmeableitender Bestandteil erfindungsgemäß ein wärmeableitender Initialsprengstoff, vorzugsweise Silberazid, gegebenenfalls in Kombination mit weiteren wärmeableitenden Bestandteilen wie Metallen, Metallverbindungen oder metallorganischen Verbindungen vorgesehen. Als Metalle können auch bei dieser Ausführungsform Zirkon, Aluminium, Titan und/oder Ferrotitan, als Metallverbindungen Boride und Hydride, vorzugsweise Zirkonborid und Zirkonhydrid eingesetzt werden. Der besondere Vorteil in der Verwendung von Silberazid liegt darin, daß es gleichzeitig als wärmeableitender Zusatz fungiert und in seiner Eigenschaft als Initialsprengstoff die Anzündempfindlichkeit verbessert. Wird erfindungsgemäß ausschließlich Silberazid eingesetzt, dann besteht der Glühdrahtsatz aus 100 Teilen Silberazid und 1 bis 6, vorzugsweise 4 Teilen Bindemittel. Als Bindemittel mit den gleichen Funktionen wie bei der ersten Ausführungsform wird vorzugsweise Polyvinylacetat eingesetzt.In a second embodiment of the filament set (claim 3) as a heat-dissipating component according to the invention a heat-dissipating Initial explosive, preferably silver azide, optionally in combination with other heat-dissipating Components such as metals, metal compounds or organometallic compounds provided. As metals In this embodiment, zirconium, aluminum, Titanium and / or ferrotitanium, as metal compounds borides and hydrides, preferably zirconium boride and zirconium hydride be used. The particular advantage in use of silver azide lies in the fact that it is also known as heat-dissipating additive acts and in its capacity Ignition sensitivity as an initial explosive improved. According to the invention, only silver azide inserted, then the glow wire set consists of 100 Parts of silver azide and 1 to 6, preferably 4 parts Binder. As a binder with the same functions as in the first embodiment, it is preferred Polyvinyl acetate used.

Der Leistungssatz besteht aus einem Bestandteil, der heiße Reaktionspartikel erzeugt, einem der obengenannten Oxidationsmittel und einem der besagten Bindemittel. Als Bestandteil, der heiße Reaktionspartikel erzeugt, ist Zirkon in seinen unterschiedlichen Kristallmodifikationen, Titan oder deren Mischungen geeignet. Als Oxidationsmittel kann beispielsweise KClO3 und/ oder KClO4, vorzugsweise KClO4 eingesetzt werden. Als Bindemittel werden vorzugsweise dieselben Substanzen wie für den Glühdrahtsatz verwendet. Erfindungsgemäß geeignete Leistungssätze setzen sich zusammen aus 30 bis 80 Teilen Zirkon, Titan oder deren Mischungen, 20 bis 70 Teilen Oxidationsmittel, vorzugsweise KClO4 und 1 bis 6 Teilen Bindemittel. Vorzugsweise wird eine Mischung aus 60 Teilen Zirkon, 40 Teilen KClO4 und 4 Teilen Polyvinylacetat verwendet.The power set consists of a component that generates hot reaction particles, one of the oxidizing agents mentioned above and one of the said binding agents. As a component that generates hot reaction particles, zircon in its different crystal modifications, titanium or their mixtures is suitable. For example, KClO 3 and / or KClO 4 , preferably KClO 4 , can be used as the oxidizing agent. The same substances are preferably used as binders as for the filament set. Power sets suitable according to the invention are composed of 30 to 80 parts of zirconium, titanium or mixtures thereof, 20 to 70 parts of oxidizing agent, preferably KClO 4 and 1 to 6 parts of binder. A mixture of 60 parts of zircon, 40 parts of KClO 4 and 4 parts of polyvinyl acetate is preferably used.

Hergestellt werden die erfindungsgemäßen Anzündelemente beispielsweise folgendermaßen. Die Bestandteile des Glühdrahtsatzes und des Leistungssatzes werden gesiebt und in dem, in einem geeigneten Lösungsmittel gelösten Bindemittel aufgeschlämmt. Verwendet man Polyvinylacetat als Bindemittel, so ist Butylacetat ein geeignetes Lösungsmittel. Diese Aufschlämmung wird tauchfähig gemacht, d.h. die Viskosität wird entsprechend eingestellt. Von besonderer Bedeutung ist dabei, daß die Bestandteile während der Tauchung nicht sedimentieren. Um dies zu gewährleisten, wird beispielsweise die Zündsatzschlämme unter Sicherheitsvorkehrungen durch vorsichtiges Umrühren homogenisiert. Anzündelemente werden im allgemeinen in Form von Zündpillen hergestellt. Eine gebräuchliche Zündpille besteht beispielsweise aus zwei elektrisch leitenden, länglichen Polträgern (Lamellen), welche mittels eines isolierenden Steges verbunden sind und einer, die Polträger verbindenden Glühbrücke. Ein solcher Zündpillengrundkörper wird mehrmals in die Zündsatzschlämme getaucht und zwar so, daß der 1. Zündsatz die Glühbrücke umschließt. Der Tauchvorgang wird so oft wiederholt, bis die für den jeweiligen Einsatzzweck ausreichende Menge Glühdrahtsatzmischung aufgebracht ist. Für den 1. Zündsatz haben sich Mengen von 6 bis 10 mg bewährt. Zwischen den einzelnen Tauchgängen wird dem Lösungsmittel Gelegenheit gegeben, abzudunsten. Nach dem Glühdrahtsatz wird in gleicher Weise der Leistungssatz als Hülle um den Glühdrahtsatz aufgebracht. Auch für diesen Satz wird der Tauchgang so oft wiederholt, bis die für den jeweiligen Einsatzzweck ausreichende Menge Leistungssatzmischung aufgebracht ist. Als Zündsatzgewicht für die gesamte Zündpille haben sich 50 bis 100, vorzugsweise 65 bis 85 mg bewährt. Nachdem die Zündpille 24 h getrocknet worden ist, wird die Zündpille noch mit einem 20%igen Lack aus dem jeweiligen Bindemittel überzogen und wiederum 48 h getrocknet.The ignition elements according to the invention are manufactured for example as follows. The components of the filament set and the benefit rate are sieved and in the binder dissolved in a suitable solvent slurried. If you use polyvinyl acetate as a binder, so butyl acetate is a suitable solvent. This slurry is made submersible, i.e. the viscosity is adjusted accordingly. Of special It is important that the components during do not sediment during diving. To ensure this is, for example, the primer sludge under Safety precautions homogenized by careful stirring. Ignition elements are generally in shape made from squibs. A common squib consists for example of two electrically conductive, elongated pole supports (lamellae), which by means of a insulating web are connected and one, the pole carrier connecting glow plug. Such a primer body is immersed several times in the primer slurry in such a way that the 1st primer is the glow plug encloses. The diving process is repeated until the sufficient amount for the respective application Glow wire set mixture is applied. For the 1st primer Amounts of 6 to 10 mg have proven themselves. Between the individual dives become an opportunity for the solvent given to evaporate. After the filament set is in in the same way the power set as a sheath around the filament set upset. For this sentence too Repeat the dive until the one for each Intended use sufficient amount of power rate mix is applied. As primer weight for the entire squib have 50 to 100, preferably 65 to 85 mg proven. After the squib was dried for 24 hours the squib is still covered with a 20% varnish coated with the respective binder and again 48 h dried.

Die erfindungsgemäßen Zündsätze können je nach eingesetztem Bindemittel Verwendung finden bei hochtemperaturbeständigen Anzündelementen. Wird als Bindemittel beispielsweise Polysulfon oder Polyethersulfon eingesetzt, können die erfindungsgemäßen Zündsätze bei Temperaturen von bis zu 250°C eingesetzt werden. Die erfindungsgemäßen Anzündelemente sind ganz besonders geeignet für die Anzündung von Treibsätzen, die lange Einwirkzeiten mit heißer Flamme erfordern, sowie für unempfindliche Treibsätze, bei denen heiße metallische Partikel benötigt werden. The primers according to the invention can be used according to the Binders are used in high temperature resistant Ignition elements. Used as a binder, for example Polysulfone or polyethersulfone used, can the primers according to the invention at temperatures of up to 250 ° C can be used. The invention Ignition elements are particularly suitable for the Ignition of propellants that have long exposure times hot flame and insensitive propellants, where hot metallic particles are needed become.

Die in der Tabelle 1 angegebenen Zündsatzmischungen sollen die Erfindung näher erläutern, ohne sie jedoch einzuschränken.The primer mixtures specified in Table 1 are intended explain the invention in more detail, but without restricting it.

Als Glühdrähte wurden eingesetzt:The following filaments were used:

Gd. I Cr/Ni 2938 Ohm/m bl. h. 0,5 mm Gd. II Cr/Ni 2823 Ohm/m bl. w. 0,5 mm Gd.III Cr/Ni 2827 Ohm/m bl. h. 0,5 mm Gd. IV Cr/Ni 2631 Ohm/m bl. w. 0,7 mm Gd. V Cr/Ni 2649 Ohm/m bl. h. 0,7 mm Gd. VI Cr/Ni 2649 Ohm/m bl. h. 0,5 mm.

Figure 00080001
Figure 00090001
DG I Cr / Ni 2938 Ohm / m bl. H. 0.5 mm DG II Cr / Ni 2823 Ohm / m bl. w. 0.5 mm Gd.III Cr / Ni 2827 Ohm / m bl. H. 0.5 mm DG IV Cr / Ni 2631 Ohm / m bl. w. 0.7 mm DG V Cr / Ni 2649 Ohm / m bl. H. 0.7 mm DG VI Cr / Ni 2649 Ohm / m bl. H. 0.5 mm.
Figure 00080001
Figure 00090001

Claims (12)

  1. Firing element consisting of a combination of two ignition charges, characterized in that the first ignition charge (glow-wire charge) contains at least one initiating explosive, at least one heat-dissipating additive, at least one oxidizing agent and a binding agent, and the second ignition charge (power charge) contains at least one constituent that produces hot reaction particles, contains an oxidizing agent and a binding agent.
  2. Firing element according to claim 1, characterized in that lead azide, diazodinitrophenol, silver azide, picrate or trizinate, preferably lead picrate, is used as the initiating explosive of the glow-wire charge.
  3. Firing element consisting of a combination of two ignition charges, characterized in that the first ignition charge (glow-wire charge) contains a heat-dissipating initiating explosive, or a heat-dissipating initiating explosive with a heat-dissipating additive, and a binding agent, and the second ignition charge (power charge) contains at least one constituent that produces hot reaction particles, contains an oxidizing agent and a binding agent.
  4. Firing element according to claim 3, characterized in that silver azide is used as the heat-dissipating initiating explosive.
  5. Firing element according to one of claims 1 to 4, characterized in that inorganic or organic heat-absorbing substances, preferably metals, metal compounds or metal-organic compounds, are used as the heat-dissipating additive.
  6. Firing element according to one of claims 1 to 5, characterized in that zirconium, aluminium, titanium, ferrotitanium, metal compounds, preferably zirconium boride or zirconium hydride or a mixture of these heat-dissipating additives, is used as the heat-dissipating additive.
  7. Firing element according to one of claims 1 to 6, characterized in that the constituent in the power charge that produces hot reaction particles consists of zirconium in different crystal modifications, titanium or mixtures thereof.
  8. Firing element according to one of claims 1 to 7, characterized in that KClO3 and/or KClO4 is used as the oxidizing agent.
  9. Firing element according to one of claims 1 to 8, characterized in that polyvinyl acetate, polysulphone or polyether sulphone, preferably polyvinyl acetate, is used as the binding agent.
  10. Firing element according to one of claims 1 or 2, characterized in that the glow-wire charge consists of 20 to 80 parts of picrate, 80 to 20 parts of a mixture of heat-dissipating additive according to claim 5 and oxidizing agent according to claim 8, and 1 to 6 parts of binding agent according to claim 9, preferably 4 parts of binding agent according to claim 9.
  11. Firing element according to claim 10, characterized in that the mixture of heat-dissipating additive and oxidizing agent consists of 60 to 90 parts of heat-dissipating additive and 10 to 40 parts of KClO4.
  12. Firing element according to one of claims 3 to 9, characterized in that the glow-wire charge consists of 100 parts of heat-dissipating initiating explosive, preferably silver azide, and 1 to 6 parts, preferably 4 parts of binding agent.
EP95932725A 1994-09-13 1995-09-12 Ignition elements and finely adjustable ignition compositions Expired - Lifetime EP0781260B1 (en)

Priority Applications (1)

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DE4432521 1994-09-13
DE4432521 1994-09-13
PCT/EP1995/003589 WO1996008454A1 (en) 1994-09-13 1995-09-12 Ignition elements and finely adjustable ignition compositions

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EP0781260B1 true EP0781260B1 (en) 2001-12-12

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WO1999048842A1 (en) * 1998-03-20 1999-09-30 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Primary explosives and primers which can be ignited by electric triggering
US20030034103A1 (en) * 1999-12-03 2003-02-20 Klaus Kedecker Ignition means for propellant powders
DE10125079C1 (en) * 2001-05-23 2003-01-09 Tdw Verteidigungstech Wirksys Explosive charge for a warhead
US6905562B2 (en) * 2003-09-04 2005-06-14 Autoliv Asp, Inc. Low density slurry bridge mix
RU2484077C2 (en) * 2011-04-11 2013-06-10 Витаутас Валентинович Сенкус Combustible mixture mix and method of its ignition
RU2538263C1 (en) * 2013-06-26 2015-01-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кемеровский государственный университет" (КемГУ) Method of controlling optical detonator triggering threshold
JP6648161B2 (en) * 2016-01-27 2020-02-14 第一稀元素化学工業株式会社 Zirconium boride and method for producing the same
DE102019116464A1 (en) * 2019-06-18 2020-12-24 NEFZER SPECIAL EFFECTS GmbH Film effect detonator and method of manufacture
JP2023096436A (en) * 2021-12-27 2023-07-07 日本化薬株式会社 Ignition charge and igniter containing the same

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US3499386A (en) * 1962-11-29 1970-03-10 Dynamit Nobel Ag Primer
CH450990A (en) * 1964-02-11 1968-05-15 Du Pont Pop fuse
US3211097A (en) * 1964-06-29 1965-10-12 Kenneth R Foote Pyrogen squib
DE1771943C2 (en) * 1968-08-05 1975-03-27 Dynamit Nobel Ag, 5210 Troisdorf Ignition kit for propellants and rocket propellants
US3865008A (en) * 1970-02-04 1975-02-11 Arwyn Theophilus Thomas Manufacture of fuse heads
CH648012A5 (en) * 1980-12-22 1985-02-28 Inventa Ag DELAY KIT, INCLUDING INITIAL EXPLOSIVE.
DE3243425A1 (en) * 1982-11-24 1984-05-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Igniter for propellant charges
FR2599361B1 (en) * 1986-05-27 1991-10-04 Survilliers Nle Cartoucherie PYROTECHNIC COMPOSITION FOR ELECTRIC SAFETY IGNITER AND IGNITER, INFLAMMATOR AND IGNITOR THUS OBTAINED
DE3707694A1 (en) * 1987-03-11 1988-09-29 Dynamit Nobel Ag ELECTRICALLY APPLICABLE SETS FOR SLEEVELESS AMMUNITION AND DRIVING CARTRIDGES
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EP1110928A1 (en) 2001-06-27
CZ296695B6 (en) 2006-05-17
PL181960B1 (en) 2001-10-31
JPH10505573A (en) 1998-06-02
KR970706215A (en) 1997-11-03
PL319093A1 (en) 1997-07-21
ATE210619T1 (en) 2001-12-15
CZ70797A3 (en) 1997-11-12
EP0781260A1 (en) 1997-07-02
DE19533487A1 (en) 1996-03-14
DE59509947D1 (en) 2002-01-24
WO1996008454A1 (en) 1996-03-21

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