EP1171402A1 - Dispositif declenchant une detonation - Google Patents

Dispositif declenchant une detonation

Info

Publication number
EP1171402A1
EP1171402A1 EP99973485A EP99973485A EP1171402A1 EP 1171402 A1 EP1171402 A1 EP 1171402A1 EP 99973485 A EP99973485 A EP 99973485A EP 99973485 A EP99973485 A EP 99973485A EP 1171402 A1 EP1171402 A1 EP 1171402A1
Authority
EP
European Patent Office
Prior art keywords
initiating device
ddnp
detonation initiating
particulate form
detonation
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Withdrawn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
EP99973485A
Other languages
German (de)
English (en)
Inventor
Adriaan Johannes Goosen
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.)
SMI Tech Pty Ltd
Original Assignee
SMI Tech Pty Ltd
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 SMI Tech Pty Ltd filed Critical SMI Tech Pty Ltd
Publication of EP1171402A1 publication Critical patent/EP1171402A1/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Withdrawn legal-status Critical Current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
    • C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/02—Compositions or products which are defined by structure or arrangement of component of product comprising particles of diverse size or shape
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C7/00—Non-electric detonators; Blasting caps; Primers

Definitions

  • This invention relates to a detonator and to a detonation initiating device for
  • detonation initiating device which often comprises a metal resistive wire
  • the metal resistive wire may be embedded in
  • cerium as cerium, tantalum or boron in combination with an oxidiser.
  • detonation initiating device is commonly known as a fuse head.
  • a thick film bridge initiator usually comprises a printed resistor extending
  • the resistor being either polymeric or ceramic in nature, as is common in hybrid electronic
  • the bridge is trimmed or printed to value.
  • a thin film bridge usually comprises a central conductor; and an annular
  • a metal layer forming a resistor is vacuum deposited
  • a SCB initiating device uses silicon doping compositions to generate plasma
  • the resistor or SCB is disposed in close contact
  • the device including:
  • an explosive composition including diazodinitrophenol (DDNP),
  • DDNP Diazodinitrophenol
  • the resistive substance may constitute a thick film bridge for an electronic
  • the resistive substance may constitute a thin film bridge.
  • the resistive substance may comprise a dope substance
  • the explosive composition may further include a binder.
  • the binder may be an energetic material.
  • the binder is selected from
  • the binder may be non- energetic.
  • the binder is
  • the explosive composition includes
  • the DDNP in fine particulate form may have a particle size which is
  • the DDNP in particulate form may be a precipitate of a mixture of DDNP and
  • the DDNP in particulate form may be in a crystalline or modified crystalline
  • the DDNP in particulate form may be prepared substantially as described in
  • the DDNP in particulate form may include compounds selected from the
  • the oxidisers may be selected from the group comprising chlorates, nitrates,
  • perchlorates, and oxides and the fuels may be selected from the group
  • Said resistive substance may constitute a resistive bridge and the fine
  • particulate DDNP may have a particle size which is at least five times smaller
  • the fine particulate DDNP has a particle size which is at least ten times smaller than
  • larger particulate form may be between 1 :99 and 20:80 on a mass per mass
  • the ratio between the fine particulate DDNP and the DDNP is preferably the ratio between the fine particulate DDNP and the DDNP
  • the arrangement may be such that when an external current is applied to the
  • the fine particulate DDNP ignites, to initiate ignition of the DDNP in
  • the DDNP in fine particulate form may be
  • the DDNP is enclosed.
  • the DDNP is enclosed.
  • DDNP is enclosed by a layer comprising a polymeric material or a resin.
  • the detonation initiating device 10 includes two spaced electrical conductors
  • composition generally designated by reference numeral 18, covering the
  • the explosive composition 18 is prepared from an energetic nitro-cellulose
  • the DDNP in fine particulate form 18.1 has a particle size which is magnitudes smaller than the
  • the DDNP in particulate form is preferably in a crystalline state and the
  • explosive composition 18 includes additional compounds such as other
  • the oxidisers are explosives, oxidisers, fuels and/or reducing agents.
  • the oxidisers are explosives, oxidisers, fuels and/or reducing agents.
  • the oxidisers are explosives, oxidisers, fuels and/or reducing agents.
  • the fuels are selected from the group comprising metals and sulphides.
  • the oxidiser is lead monoxide (PbO) and the fuel metal is
  • the DDNP in fine particulate form 18.1 may alternatively be applied
  • the explosives composition 16 is enclosed by a polymeric layer 20.
  • particulate DDNP 18.1 initiates ignition of the DDNP in relatively larger
  • particulate form 18.2 which in turn ignites a detonator charge (not shown).
  • the detonation initiating device according to the invention is not only very

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Air Bags (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

Cette invention porte sur un dispositif déclenchant une détonation et s'appliquant sur un détonateur. Ce dispositif comprend deux conducteurs électriques espacés ; une substance résistive s'étendant entre les conducteurs électriques et destinée à libérer une énergie lors de l'application d'un courant électrique sur celle-ci ; et une composition explosive comprenant du diazodinitrophénol (DDNP) et recouvrant la substance résistive. La composition explosive comprend du DDNP sous forme de fines particules et sous forme de particules relativement plus grosses. Le dispositif déclenchant la détonation est non seulement très stable et résistant à une explosion accidentelle, mais aussi très fiable du fait de la présence de DDNP sous forme de fines particules. De plus, la composition explosive du dispositif peut être déclenchée même en présence de faibles niveaux d'énergie auxquels fonctionnent généralement les dispositifs de déclenchement électroniques.
EP99973485A 1998-12-21 1999-12-09 Dispositif declenchant une detonation Withdrawn EP1171402A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ZA9811701 1998-12-21
ZA9811701 1998-12-21
PCT/IB1999/001971 WO2000037395A1 (fr) 1998-12-21 1999-12-09 Dispositif declenchant une detonation

Publications (1)

Publication Number Publication Date
EP1171402A1 true EP1171402A1 (fr) 2002-01-16

Family

ID=25587467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99973485A Withdrawn EP1171402A1 (fr) 1998-12-21 1999-12-09 Dispositif declenchant une detonation

Country Status (5)

Country Link
EP (1) EP1171402A1 (fr)
AR (1) AR021942A1 (fr)
AU (1) AU778545B2 (fr)
CA (1) CA2355256A1 (fr)
WO (1) WO2000037395A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040140027A1 (en) * 2001-05-10 2004-07-22 Rainer Hagel Igniting agents
DE102004004748A1 (de) * 2003-03-08 2004-09-23 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Glasdurchführung für einen pyroelektrischen Anzünder
JP4787515B2 (ja) * 2005-03-04 2011-10-05 旭化成ケミカルズ株式会社 起爆薬含有フィルム

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2195032A (en) * 1938-04-16 1940-03-26 Atlas Powder Co Detonator
US2960933A (en) * 1945-10-12 1960-11-22 Hercules Powder Co Ltd Detonator
DE2020016C3 (de) * 1970-04-24 1974-12-12 Dynamit Nobel Ag, 5210 Troisdorf Metallschichtzündmittel
CA1150513A (fr) * 1980-09-19 1983-07-26 Lechoslaw A.M. Utracki Produit d'amorcage pour detonateurs ou charges d'amorcage renfermant un liant au polysulfure
US4858529A (en) * 1988-07-01 1989-08-22 The United States Of America As Represented By The Department Of Energy Spark-safe low-voltage detonator
DE4143631A1 (de) 1991-05-30 1998-04-16 Dynamit Nobel Ag Zerkleinerung von pulverförmigen Initialsprengstoffen
FR2704944B1 (fr) * 1993-05-05 1995-08-04 Ncs Pyrotechnie Technologies Initiateur électro-pyrotechnique.
US5648634A (en) * 1993-10-20 1997-07-15 Quantic Industries, Inc. Electrical initiator
US5646367A (en) * 1996-03-01 1997-07-08 Remington Arms Company, Inc. Conductive primer mix
DE19806388A1 (de) * 1997-03-07 1998-09-10 Dynamit Nobel Ag Zündmittelelement mit Schutzlack
US5889228A (en) * 1997-04-09 1999-03-30 The Ensign-Bickford Company Detonator with loosely packed ignition charge and method of assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0037395A1 *

Also Published As

Publication number Publication date
WO2000037395A1 (fr) 2000-06-29
CA2355256A1 (fr) 2000-06-29
AR021942A1 (es) 2002-09-04
AU1403900A (en) 2000-07-12
AU778545B2 (en) 2004-12-09

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