EP0051324A1 - Incendiary compound comprising a metallic fuel from group IVA of the periodic system - Google Patents

Incendiary compound comprising a metallic fuel from group IVA of the periodic system Download PDF

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Publication number
EP0051324A1
EP0051324A1 EP81200996A EP81200996A EP0051324A1 EP 0051324 A1 EP0051324 A1 EP 0051324A1 EP 81200996 A EP81200996 A EP 81200996A EP 81200996 A EP81200996 A EP 81200996A EP 0051324 A1 EP0051324 A1 EP 0051324A1
Authority
EP
European Patent Office
Prior art keywords
fire
characterized
used
mass
organic binder
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.)
Granted
Application number
EP81200996A
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German (de)
French (fr)
Other versions
EP0051324B1 (en
Inventor
Eduard Daume
Jürg Sarbach
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 Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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
Priority to CH811680 priority Critical
Priority to CH8116/80 priority
Application filed by Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Publication of EP0051324A1 publication Critical patent/EP0051324A1/en
Application granted granted Critical
Publication of EP0051324B1 publication Critical patent/EP0051324B1/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/04Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
    • C06B45/06Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
    • C06B45/10Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B43/00Compositions characterised by explosive or thermic constituents not provided for in groups C06B25/00 - C06B41/00
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06CDETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C15/00Pyrophoric compositions; Flints
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S149/00Explosive and thermic compositions or charges
    • Y10S149/11Particle size of a component
    • Y10S149/114Inorganic fuel

Abstract

The fire mass consists of a zirconium or titanium powder with an average grain size of 15 - 50 µm, to which less than 2% by mass of an organic binder is added, especially polyvinyl acetate, because small binder concentrations have a favorable effect on the effect of the burning metal particles, i.e. affect burning time and flight distance.

Description

  • The invention relates to a compressible fire mass, with a metallic fuel of group IVB of the periodic system and an organic binder. The metals used are preferably titanium and zircon. The preferred binder is polyvinyl acetate.
  • For sliver fire ammunition, this fire mass is preferably arranged in a projectile or warhead together with an explosive explosive. However, it can also be pressed into the cavity of a projectile that does not contain explosives, e.g. armor-piercing projectiles without explosives.
  • The detonative or mechanical fragmentation of the projectile or warhead in or near the target creates not only the splinters, but also rapidly flying fire mass particles that burn autonomously in the air. This creates a fire effect that is extensive in terms of space and time.
  • A known fire mass of this type (see DE-AS 29 01 517) contains an organic binder and a metal sponge e.g. made of zircon or hafnium, polytetrafluoroethylene in a proportion of 2 to 15% by mass being used as the binder.
  • Known sliver fire ammunition contains mixtures of highly explosive explosives such as hexogen, octogen, trotyl and aluminum powder. The addition of metal increases the blowing effect and extends the flame burning time from 1 ms to 15 ms. This increases the likelihood of kindling for flammable material in the target - e.g. leaking fuel - enlarged.
  • The use of fluorinated binders is said to incinerate by forming the tetrafluoride of the corresponding metal support. With metals in the form of coarse-grained, porous, sponge-like particles with a particle size of 0.05 - 8 mm, the aim is to extend the burning time. Experiments have shown that on the one hand the use of a metal sponge is not absolutely necessary and that too much binder has an unfavorable influence on the effect of the combustible metal particles, in particular on the burning time and the flight distance.
  • The binder must therefore be used in the lowest possible concentration, which still ensures that the metal powder can be pressed sufficiently.
  • According to the invention, the proportion of the binder in the fire mass is therefore less than 2% by mass.
  • The binder can be mixed in the usual way as a lacquer solution with the metal powder. By sieving and removing the solvent at elevated temperature, a compressible granulate is created.
  • It has also been shown that halogen-containing binders do not effectively support the combustion of the metals. This can also be derived from the volume and mass-specific reaction enthalpies.
  • Reaction of the metal particles with the atmospheric oxygen:
    • Zr + O 2 → ZrO 2 - 12 kJ / g metal 78 kJ / cm 3 metal
  • Reaction of the metal particles with the Teflon binder:
    • nZr + (C 2 F 4 ) n → nZrF 4 + 2 nC - 5.4 kJ / g mixture ≅ 17.7 kJ / c m 3 mixture
  • The metal fluorides formed are volatile and withdraw energy from the system when they evaporate.
  • The organic binder used according to the invention is therefore preferably halogen-free.
  • Furthermore, it was found that the metal sponges used for the production of fire masses can be replaced by metal powder of pyrotechnic quality without significant loss of burning time. The advantage is a strong reduction in the risk of explosion when the fire mass is compressed with the explosive. The risk of explosion is high when using relatively large, sponge-like particles with a hard, jagged surface.
  • Metal powder with an average grain size of 15-50 μm is therefore preferably used.
  • To test the effectiveness of the fire masses, projectile bodies were statically blasted with 5 g of fire mass pressed in on the face and 25 g of a highly explosive explosive consisting of hexogen and trinitrotoluene.
  • The projectile body was placed vertically on a solid surface. The charge was detonated using an electrically triggered ignition system.
  • The flight distance and burning time of the flinging, cone-shaped, burning metal particles were measured.
  • A. The influence of grain size and grain shape on the effect of the fire masses can be seen in the following table.
  • Binder: 1% by mass of polyvinyl acetate
  • Figure imgb0001
  • B. The influence of the binder concentration on the effect of the fire mass is shown in the following table. Zirconium powder with an average grain size of 15 μm and polyvinyl acetate were used as a binder.
    Figure imgb0002

Claims (6)

1. Compressible fire mass with a metallic fuel from group IVB of the periodic system (Zr, Ti, Hf) and an organic binder, in particular polyvinyl acetate, characterized in that the proportion of the organic binder is less than 2% by mass.
2. Fire composition according to claim 1, characterized in that a metal powder with an average grain size of 15-50 microns is used.
3. Fire mass according to claim 1, characterized in that a metal sponge with an average grain size up to 2000 pm is used.
4. Fire composition according to claims 1-3, characterized in that the organic binder used is halogen-free.
5. incendiary composition according to claims 1-4, characterized in that it is used for sliver fire ammunition in a projectile body or warhead together with an explosive explosive.
6. Fire compound according to claims 1-4, characterized in that it is used for armor-piercing projectiles in a projectile body that contains no explosives.
EP81200996A 1980-10-31 1981-09-09 Incendiary compound comprising a metallic fuel from group iva of the periodic system Expired EP0051324B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH811680 1980-10-31
CH8116/80 1980-10-31

Publications (2)

Publication Number Publication Date
EP0051324A1 true EP0051324A1 (en) 1982-05-12
EP0051324B1 EP0051324B1 (en) 1984-06-13

Family

ID=4335423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200996A Expired EP0051324B1 (en) 1980-10-31 1981-09-09 Incendiary compound comprising a metallic fuel from group iva of the periodic system

Country Status (7)

Country Link
US (1) US4402705A (en)
EP (1) EP0051324B1 (en)
JP (1) JPS57106591A (en)
CA (1) CA1175658A (en)
DE (1) DE3164190D1 (en)
NO (1) NO150477C (en)
ZA (1) ZA8107001B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257498A (en) * 1983-11-12 1993-01-13 Rheinmetall Gmbh Hollow charges
WO2007062732A2 (en) * 2005-11-29 2007-06-07 Rwm Schweiz Ag Incendiary compound comprising a combustible from group ivb of the periodic table, and projectile containing said incendiary compound
WO2016120605A1 (en) * 2015-01-27 2016-08-04 Bae Systems Plc Reactive materials

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6679176B1 (en) 2000-03-21 2004-01-20 Peter D. Zavitsanos Reactive projectiles for exploding unexploded ordnance
US6691622B2 (en) * 2000-03-21 2004-02-17 General Sciences, Inc. Reactive projectiles, delivery devices therefor, and methods for their use in the destruction of unexploded ordnance
US6485586B1 (en) * 2000-10-27 2002-11-26 The United States Of America As Represented By The Secretary Of The Navy Lower burning rate, reduced hazard, high temperature incendiary
DE10140600A1 (en) * 2001-08-18 2003-03-06 Rheinmetall W & M Gmbh Fire set for a wing-stabilized balancing projectile
DE102007021451A1 (en) * 2007-04-05 2008-10-09 Rwm Schweiz Ag Sub-projectile with energetic content

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939779A (en) * 1958-04-09 1960-06-07 Olin Mathieson Pyrotechnic compositions
US3020243A (en) * 1958-05-22 1962-02-06 Catalysts & Chem Inc Preparation of gel extrudates
US3109762A (en) * 1962-08-01 1963-11-05 Robert E Betts Hafnium-potassium perchlorate pyrotechnic composition
US3396060A (en) * 1960-11-02 1968-08-06 Army Usa Incendiary composition consisting of titanium, aluminum-magnesium alloy, and inorganic oxidizer salt
US3565706A (en) * 1968-01-19 1971-02-23 Hal R Waite Incendiary composition containing a metallic fuel and a solid fluoro-carbon polymer
DE2226266A1 (en) * 1972-05-30 1973-12-13 Dynamit Nobel Ag Ignition pin prodn - by coating pin with layers of reducing agent and oxidising agent
US3865035A (en) * 1969-01-16 1975-02-11 Thiokol Chemical Corp Multi-use munition
DE2552950A1 (en) * 1975-11-26 1977-06-02 Diehl Fa incendiary ammunition
DE2901517A1 (en) * 1978-01-25 1979-08-02 Teledyne Ind choux paste

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032451A (en) * 1954-09-29 1962-05-01 Ohio Commw Eng Co Solid jet or rocket fuel
US3030243A (en) * 1958-02-24 1962-04-17 Hart David First fire and igniter composition
US3734788A (en) * 1964-04-17 1973-05-22 Us Navy High density solid propellants and method of preparation using fluoro-polymers
FR2309493B1 (en) * 1973-03-15 1978-03-31 France Etat
US3927993A (en) * 1973-11-21 1975-12-23 Ronald W Griffin Fire starter and method
US3998676A (en) * 1974-07-29 1976-12-21 The United States Of America As Represented By The Secretary Of The Navy Method for bomb manufacture
US4090894A (en) * 1977-03-21 1978-05-23 The United States Of America As Represented By The Secretary Of The Navy Moldable ethylene/vinyl acetate copolymer
US4128996A (en) * 1977-12-05 1978-12-12 Allied Chemical Corporation Chlorite containing pyrotechnic composition and method of inflating an inflatable automobile safety restraint

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939779A (en) * 1958-04-09 1960-06-07 Olin Mathieson Pyrotechnic compositions
US3020243A (en) * 1958-05-22 1962-02-06 Catalysts & Chem Inc Preparation of gel extrudates
US3396060A (en) * 1960-11-02 1968-08-06 Army Usa Incendiary composition consisting of titanium, aluminum-magnesium alloy, and inorganic oxidizer salt
US3109762A (en) * 1962-08-01 1963-11-05 Robert E Betts Hafnium-potassium perchlorate pyrotechnic composition
US3565706A (en) * 1968-01-19 1971-02-23 Hal R Waite Incendiary composition containing a metallic fuel and a solid fluoro-carbon polymer
US3865035A (en) * 1969-01-16 1975-02-11 Thiokol Chemical Corp Multi-use munition
DE2226266A1 (en) * 1972-05-30 1973-12-13 Dynamit Nobel Ag Ignition pin prodn - by coating pin with layers of reducing agent and oxidising agent
DE2552950A1 (en) * 1975-11-26 1977-06-02 Diehl Fa incendiary ammunition
DE2901517A1 (en) * 1978-01-25 1979-08-02 Teledyne Ind choux paste

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257498A (en) * 1983-11-12 1993-01-13 Rheinmetall Gmbh Hollow charges
GB2257498B (en) * 1983-11-12 1993-09-22 Rheinmetall Gmbh Armour piercing charge
WO2007062732A2 (en) * 2005-11-29 2007-06-07 Rwm Schweiz Ag Incendiary compound comprising a combustible from group ivb of the periodic table, and projectile containing said incendiary compound
WO2007062732A3 (en) * 2005-11-29 2007-08-02 Rwm Schweiz Ag Incendiary compound comprising a combustible from group ivb of the periodic table, and projectile containing said incendiary compound
US8518197B2 (en) 2005-11-29 2013-08-27 Rwm Schweiz Ag Incendiary compound comprising a combustible from group IVb of the period table, and projectile containing said incendiary compound
NO339632B1 (en) * 2005-11-29 2017-01-16 Rwm Schweiz Ag Fire Mass and projectile such incendiary composition
WO2016120605A1 (en) * 2015-01-27 2016-08-04 Bae Systems Plc Reactive materials
AU2016211060B2 (en) * 2015-01-27 2019-08-22 Bae Systems Plc Reactive materials

Also Published As

Publication number Publication date
DE3164190D1 (en) 1984-07-19
NO150477B (en) 1984-07-16
ZA8107001B (en) 1982-09-29
EP0051324B1 (en) 1984-06-13
NO150477C (en) 1984-10-24
US4402705A (en) 1983-09-06
NO813663L (en) 1982-05-03
JPS57106591A (en) 1982-07-02
CA1175658A1 (en)
CA1175658A (en) 1984-10-09

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