EP1089955A1 - Procede de production de jeux pyrotechniques d'amorce - Google Patents
Procede de production de jeux pyrotechniques d'amorceInfo
- Publication number
- EP1089955A1 EP1089955A1 EP99926266A EP99926266A EP1089955A1 EP 1089955 A1 EP1089955 A1 EP 1089955A1 EP 99926266 A EP99926266 A EP 99926266A EP 99926266 A EP99926266 A EP 99926266A EP 1089955 A1 EP1089955 A1 EP 1089955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal
- pyrotechnic
- binder
- potassium perchlorate
- mixture
- 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
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 producing pyrotechnic igniter charges based on metal powders or metal hydrides, potassium perchlorate and binders.
- Pyrotechnic phrases are mixtures of solid substances in mostly powdery form, the components of which mainly consist of reducing agents and oxidizing agents.
- an appropriate amount of energy e.g. B. in the form of an ignition flame
- a redox process is initiated: depending on the structure and arrangement, the pyrotechnic charge burns more or less violently.
- Pyrotechnic phrases are used in a variety of ways and are used e.g. B. as ignition heads of matches, in light and signal ammunition, in smoke and mist bodies, in gas generators, for. B. for safety air cushions (airbags) and used in numerous different arrangements for fireworks.
- Pyrotechnic kits are usually produced by dry mixing the individual components. If this is done by hand, the crushed components are pressed through sieves and mixed. In the case of mechanical mixing, the components of the pyrotechnic set are possibly mixed unmixed into containers after prior comminution and homogeneously mixed in this by means of stirrers, rotary movements of the mixing container or devices applying shear forces.
- the mixing devices are tumble mixers, tetrahedron mixers, planetary mixers or derived and also combined mixers used.
- Pyrotechnic phrases are often used as granules because they are easier to pour and dose in this form.
- the granulation is done by adding a suitable solvent to the dry batch and mixing in special containers.
- the solvent can already contain the binder in solution, or the binder component, which is swellable or soluble in the solvent, is already in powder form in the pyrotechnic compound, so that when the solvent is added, adhesive forces can form which ultimately lead to the form of granules .
- Special granule mixers are provided to form the granulate shape. The solvent is then removed again by drying, so that a meterable bulk material is obtained.
- This method is used in particular when mixing pyrotechnic primers.
- solvents e.g. B. water
- the pyrotechnic primers can be made much safer than when dry. Nevertheless, the energy stored in ignition kits is so high that the effect of an accident-related triggering prohibits their processing by hand even when wet.
- the amount of mixture in the mass must be kept small, usually less than 100 grams, so that triggering remains manageable even during manufacture.
- Another difficulty with this method is the measurement of the amount of liquid. On the one hand, it must be large enough to significantly reduce the risk of triggering when the sentence is mixed; on the other hand, the subsequent drying time increases with increasing amount of liquid; in addition, the risk of cracks and voids forming when drying increases: cracks and voids endanger the safe function of the primer when it is ignited. Since after the preparation of the mixture in the subsequent metering for the application, the liquid is also metered in, but is not involved in the actual conversion of the ignition mixture, the liquid content of the mixture must be precisely determinable and also kept constant during metering. Only then will the igniter charges have uniform properties during the subsequent drying.
- liquid pasty mixtures for pyrotechnic primers with components of different density, solubility or electrical environment i. H. Formation of dipoles or charging in the same or opposite directions, relatively difficult to handle.
- the different solid components in the mixtures have different
- the invention has for its object to provide a method for producing pyrotechnic primers of the type in question, with which the components used are mixed homogeneously, while at the same time the risk of triggering the mixture is significantly reduced and a reproducible dosage is made possible.
- a homogeneous suspension is produced from the individual components for the pyrotechnic ignition charge with the aid of a suitable liquid dispersant, this being carried out with the aid of ultrasound he follows.
- the mixture is dosed immediately afterwards in this consistency, e.g. B. in lighters or on igniters.
- the grain sizes of the solids used, ie metal powder or metal hydrides and the potassium perchlorate are less than 50 ⁇ m, preferably less than 20 ⁇ m.
- both an optimal mixing of the components and a suitable viscosity of the suspension for the subsequent metering can be achieved.
- the energy required for the homogeneous distribution of the components in the suspension is introduced into the mixture by cavitation.
- the cavitation is generated by ultrasound with frequencies preferably greater than 16 kHz. With the implosion of the gas bubbles resulting from the cavitation, temperatures of approx. 5500 ° C and pressures up to 500 bar can be reached.
- Another feature of the invention is that the components are mixed directly in the container from which subsequently is also metered to the preparation of the dispersion. This is e.g. B. by using appropriately shaped sonotrodes, very possible.
- the mixtures are e.g. B. in cartridges or cartridges, which are then used in a metering device.
- the liquid mixtures are then metered into the prepared igniter housing or onto igniter elements using light pressure or vacuum.
- the cartridges or cartridges containing the ignition mixture can be exposed to mechanical vibrations or sound waves.
- Another application of the invention while avoiding the dangers that can occur when mixing larger quantities is the dosing of premixed components that are not or only slightly explosive in suspension in a relatively small mixing space and the subsequent filling or dosing in z.
- the mixing room can be provided with a sonotrode connection or a mechanical sonotrode contact.
- the method according to the invention for the production of pyrotechnic ignition charges based on metal powders, metal hydrides, potassium perchlorate and binders therefore consists of the process steps:
- An exemplary composition of the ignition mixture is:
- the ratio of solid to dispersant is variable and, based on experience, is in the range of 70 to 80% solids.
- Titanium or zirconium or their hydrides are preferably used as the metal.
- the binder is preferably selected from the group of the fluorinated polymeric aliphates.
- 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 proven effective for this.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Air Bags (AREA)
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 true EP1089955A1 (fr) | 2001-04-11 |
EP1089955B1 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) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
MX2013000536A (es) * | 2010-07-15 | 2013-07-29 | Nippon Kayaku Kk | Composicion de ignicion en polvo para aparato de encendido. |
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 |
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 |
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 |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3222231A (en) * | 1962-09-18 | 1965-12-07 | Atlantic Res Corp | Process for producing finely divided rounded particles |
DE1578099A1 (de) * | 1966-04-07 | 1971-04-08 | Dynamit Nobel Ag | Verfahren zum Einbringen von Zuendsatz in die Bodenfalte von Kartuschhuelsen fuer Randfeuerzuendung |
US3420137A (en) * | 1967-08-18 | 1969-01-07 | Olin Mathieson | Contained compacted ammunition primer composition and method of preparation |
US3652350A (en) * | 1969-06-23 | 1972-03-28 | Hi Shear Corp | Method of blending pyrotechnic mixtures |
US3954526A (en) * | 1971-02-22 | 1976-05-04 | Thiokol Corporation | Method for making coated ultra-fine ammonium perchlorate particles and product produced thereby |
US3708357A (en) * | 1971-04-21 | 1973-01-02 | Us Army | Oxidizers with improved thermal stability and method of making same |
US3739166A (en) * | 1971-12-30 | 1973-06-12 | Gen Electric | Photoflash device |
US4000025A (en) * | 1974-05-28 | 1976-12-28 | The United States Of America As Represented By The Secretary Of The Navy | Incorporating ballistic modifiers in slurry cast double base containing compositions |
FR2344329A1 (fr) * | 1976-03-18 | 1977-10-14 | Deberghe & Lafaye | Procede et dispositif permettant de modifier les caracteristiques d'un fluide |
US4247494A (en) * | 1977-08-16 | 1981-01-27 | Imi Kynoch Limited | Case priming |
US4207125A (en) * | 1978-08-07 | 1980-06-10 | Energy Sciences And Consultants, Inc. | Pre-mix for explosive composition and method |
US4287010A (en) * | 1979-08-06 | 1981-09-01 | E. I. Du Pont De Nemours & Company | Emulsion-type explosive composition and method for the preparation thereof |
US4640724A (en) * | 1980-04-19 | 1987-02-03 | Imi Kynoch Limited | Methods of priming explosive devices |
CA1195122A (fr) * | 1981-05-25 | 1985-10-15 | Paul Arni | Methode de preparation d'un explosif brisant; produit ainsi obtenu, et sa mise en forme |
CH664554A5 (en) * | 1985-07-15 | 1988-03-15 | Oerlikon Buehrle Ag | Ignition powder mixt. for solid propellant reinforcing charge - contg. inorganic. fuel and excess inorganic oxidant to generate oxygen and prevent hang fire in cold |
US4841865A (en) * | 1987-06-17 | 1989-06-27 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence | Smoke composition and method of making same |
CH676389A5 (fr) * | 1987-07-29 | 1991-01-15 | Eidgenoess Munitionsfab Thun | |
DE3925234A1 (de) * | 1989-07-29 | 1991-01-31 | Nico Pyrotechnik | Verfahren zur herstellung explosionsgefaehrlicher stoffgemische |
DE4117717C1 (en) * | 1991-05-30 | 1992-12-17 | Dynamit Nobel Ag, 5210 Troisdorf, De | Finely crystalline priming explosive prodn. - by comminuting to specified grain size in non-solvent using high speed stirrer |
RU2056926C1 (ru) * | 1993-04-15 | 1996-03-27 | Всероссийский научно-исследовательский институт консервной и овощесушильной промышленности | Смеситель |
US5728964A (en) * | 1993-10-20 | 1998-03-17 | Quantic Industries, Inc. | Electrical initiator |
RU2050963C1 (ru) * | 1993-11-18 | 1995-12-27 | Всероссийский научно-исследовательский институт консервной и овощесушильной промышленности | Ультразвуковой диспергатор-смеситель |
US5531845A (en) * | 1994-01-10 | 1996-07-02 | Thiokol Corporation | Methods of preparing gas generant formulations |
GB9511263D0 (en) * | 1995-06-03 | 1995-07-26 | Ici Plc | Process for the production of a pyrotechnic or explosive device |
US5732634A (en) * | 1996-09-03 | 1998-03-31 | Teledyne Industries, Inc. | Thin film bridge initiators and method of manufacture |
US5831207A (en) * | 1996-10-30 | 1998-11-03 | Breed Automotive Technology, Inc. | Autoignition composition for an airbag inflator |
US6224099B1 (en) * | 1997-07-22 | 2001-05-01 | Cordant Technologies Inc. | Supplemental-restraint-system gas generating device with water-soluble polymeric binder |
US6170399B1 (en) * | 1997-08-30 | 2001-01-09 | Cordant Technologies Inc. | Flares having igniters formed from extrudable igniter compositions |
-
1998
- 1998-05-28 DE DE19823999A patent/DE19823999C2/de not_active Expired - Fee Related
-
1999
- 1999-04-16 WO PCT/DE1999/001160 patent/WO1999061394A1/fr active IP Right Grant
- 1999-04-16 AU AU43584/99A patent/AU752432B2/en not_active Ceased
- 1999-04-16 JP JP2000550806A patent/JP2002516250A/ja not_active Withdrawn
- 1999-04-16 CA CA002332903A patent/CA2332903A1/fr not_active Abandoned
- 1999-04-16 KR KR1020007013169A patent/KR100570574B1/ko not_active IP Right Cessation
- 1999-04-16 DE DE59902415T patent/DE59902415D1/de not_active Expired - Lifetime
- 1999-04-16 AT AT99926266T patent/ATE222580T1/de not_active IP Right Cessation
- 1999-04-16 EP EP99926266A patent/EP1089955B1/fr not_active Expired - Lifetime
- 1999-04-16 US US09/701,275 patent/US6783616B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9961394A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU4358499A (en) | 1999-12-13 |
KR20010052391A (ko) | 2001-06-25 |
WO1999061394A1 (fr) | 1999-12-02 |
US6783616B1 (en) | 2004-08-31 |
DE19823999A1 (de) | 1999-12-09 |
DE59902415D1 (de) | 2002-09-26 |
JP2002516250A (ja) | 2002-06-04 |
KR100570574B1 (ko) | 2006-04-12 |
AU752432B2 (en) | 2002-09-19 |
DE19823999C2 (de) | 2002-07-18 |
ATE222580T1 (de) | 2002-09-15 |
CA2332903A1 (fr) | 1999-12-02 |
EP1089955B1 (fr) | 2002-08-21 |
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