EP1604963A2 - Composition pyrotechnique ayant une tenue mécanique améliorée - Google Patents
Composition pyrotechnique ayant une tenue mécanique améliorée Download PDFInfo
- Publication number
- EP1604963A2 EP1604963A2 EP05291154A EP05291154A EP1604963A2 EP 1604963 A2 EP1604963 A2 EP 1604963A2 EP 05291154 A EP05291154 A EP 05291154A EP 05291154 A EP05291154 A EP 05291154A EP 1604963 A2 EP1604963 A2 EP 1604963A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- acid
- composition according
- myristic acid
- pyrotechnic composition
- pyrotechnic
- 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- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06D—MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
- C06D5/00—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets
- C06D5/06—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/009—Wetting agents, hydrophobing agents, dehydrating agents, antistatic additives, viscosity improvers, antiagglomerating agents, grinding agents and other additives for working up
Definitions
- the technical field of the invention is that of pyrotechnic compositions and in particular that of the pyrotechnic gas generating compositions.
- Pyrotechnic compositions are well known the skilled person. They usually associate one or several oxidants with one or more reducing agents. They sometimes incorporate additives such as reaction or binders. Pyrotechnic compositions are compositions whose decomposition or combustion produces one or more specific effects: flame, light, smoke, noise, gas ... Among the compositions known are those used in inflammators pyrotechnics, in smoke generators and in gas generators.
- Patent EP 787702 thus describes a composition gas generator which combines a reducing agent (the acid tartaric) with an oxidant (potassium perchlorate). This composition is implemented by mixing in phase aqueous and then drying. Other known compositions are implemented by compression.
- Pyrotechnic compositions must be able to be kept for years before being called upon to function. They must retain their characteristics nominal values (flame temperature, volume and gas flow or generated smoke) so that their function is assured.
- compositions are subjected to thermal stress (heating) and mechanical stresses (vibrations).
- Fragmentation of the composition leads to a modification of the combustion regime which leads to a modification of the operating characteristics of the composition.
- a binder to improve the mechanical strength of a pyrotechnic composition.
- the patent WO9818661 describes for example a composition combining potassium chlorate (KClO 3 ) and lactose coated with a binder such as an aliphatic polycarbonate.
- No. 6,117,255 describes a composition combining nitrate or ammonium perchlorate with guanylurea dinitramide, the whole being coated with a rubber, polyurethane or polyethylene binder.
- the invention makes it possible to produce tablets with improved mechanical strength while reducing the amount of binder needed.
- composition pyrotechnic material comprising at least one oxidizing material and at less a reducing material, which composition is characterized in that it incorporates myristic acid.
- Myristic acid or tetradecanoic acid has the formula CH 3 - (CH 2 ) 12 -CO 2 H. It is an organic compound naturally present in animal and vegetable fats (coconut and palm kernel fats). This compound is mainly used as an additive in the food industry. Its cost is very low and it is not toxic.
- Another advantage of this component is that it has a acidic radical allowing it to participate in the reaction pyrotechnic as the main reducer used.
- Myristic acid in proportions up to 40% by weight of the composition.
- myristic acid in an application to a composition pyrotechnic gas generator, we can use from 1% to 40% myristic acid, the latter allowing to increase the mechanical strength of the composition without reducing the volume of generated gases.
- Myristic acid can be used in substitution for part of the main gear.
- a pyrotechnic composition generating a gas incorporating a reducing agent comprising at least one organic acid, say an acid including carbon atoms, for example glutamic acid, fumaric acid, ascorbic acid, stearic acid or acetylsalicylic acid or a mixture of these acids.
- a reducing agent comprising at least one organic acid, say an acid including carbon atoms, for example glutamic acid, fumaric acid, ascorbic acid, stearic acid or acetylsalicylic acid or a mixture of these acids.
- this reducer will be associated with a material oxidant selected from the following materials: potassium, ammonium perchlorate, potassium nitrate, ammonium nitrate and mixtures thereof.
- a binder for example to improve the flow characteristics components or to further increase cohesion.
- a binder from the following compounds: polyethylenic wax (micronized or not), acetate of Polyvinyl (PVA), Polyvinyl Chloride (PVC), Nitride vinyl, chlorofluoroethylene copolymer (known as Viton brand).
- additives are added to mixture of oxidizing and reducing compounds before coating with wax.
- the proportions of such additives will be calculated relative to the total mass of the oxidizing mixture and reducer. We can thus provide from 0 to 10% by weight additive.
- an additive acting as a catalyst for example 0 to 10% by weight of ferric oxide (Fe2O3) of particle size 1 to 20 microns.
- This additive will be incorporated into the redox mixture before coating with wax.
- compositions were thus produced:
- a composition combining: 60% by weight of potassium perchlorate (oxidizing), 20% by weight of acid glutamic acid, 10% myristic acid, 5% ferric oxide Fe203, 5% binder (polyethylene wax in the form of granules).
- This composition is produced as follows:
- composition comprising: 50% by weight of potassium perchlorate (oxidant), 40% by weight of ascorbic acid, 10% of acid myristic.
- This tooling makes it possible to compress pellets 8 mm in diameter and having a mass of the order 300 milligrams.
- the number of moles of gas has also been calculated generated.
- Example IC Rr (MPa) Example 5 499 0.37 Example 6 565 0.41 Example 7 631 0.46 Example 8 530 0.39 Example 9 561 0.40 Example 10 592 0.42 Example 11 623 0.44
- composition pyrotechnic for example an inflammatory composition Aluminum / Copper oxide.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Air Bags (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
| N° Exemple | Tenue mécanique | Nombre de moles de gaz engendrées par kg |
| Exemple 1 | Se pastille Résistance de 3 à 6 daN | 35 |
| Exemple 2 | Se pastille Résistance de 3 à 6 daN | 35 |
| Exemple 3 | Ne se pastille pas | 31 |
| Exemple 4 | Ne se pastille pas | 24 |
| N° Exemple | IC | Rr (MPa) |
| Exemple 5 | 499 | 0,37 |
| Exemple 6 | 565 | 0,41 |
| Exemple 7 | 631 | 0,46 |
| Exemple 8 | 530 | 0,39 |
| Exemple 9 | 561 | 0,40 |
| Exemple 10 | 592 | 0,42 |
| Exemple 11 | 623 | 0,44 |
Claims (17)
- Composition pyrotechnique comprenant au moins un matériau oxydant et au moins un matériau réducteur, composition caractérisée en ce qu'elle incorpore de l'acide Myristique.
- Composition pyrotechnique selon la revendication 1, caractérisée en ce qu'elle incorpore de 1% à 40% en masse d'acide Myristique.
- Composition pyrotechnique selon la revendication 2, caractérisée en ce qu'elle incorpore de 1% à 10% en masse d'acide Myristique.
- Composition pyrotechnique selon une des revendications 1 à 3, caractérisée en ce que le réducteur comprend au moins un acide organique.
- Composition pyrotechnique selon la revendication 4, caractérisée en ce que l'acide organique est choisi parmi les matériaux suivants : acide glutamique, acide acétylsalicylique, acide fumarique, acide stéarique, acide ascorbique et leurs mélanges.
- Composition pyrotechnique selon une des revendications 1 à 5, caractérisée en ce que le matériau oxydant est choisi parmi les matériaux suivants : perchlorate de potassium, perchlorate d'ammonium, nitrate de potassium, nitrate d'ammonium et leurs mélanges.
- Composition pyrotechnique selon une des revendications 1 à 6, caractérisée en ce qu'elle a la composition massique suivante :l'acide myristique constituant 10% à 100% du mélange réducteur.30 à 70% d'oxydant,20 à 40% d'un mélange réducteur associant l'acide myristique et au moins un acide organique,0 à 10% de liant,0 à 10% d'un catalyseur (tel l'oxyde ferrique Fe203),
- Composition pyrotechnique selon la revendication 7, caractérisée en ce qu'elle a la composition massique suivante:60% de perchlorate de potassium,20% d'acide glutamique,10% d'acide myristique,5% de liant,5% d'un catalyseur (tel l'oxyde ferrique Fe2O3).
- Composition pyrotechnique selon la revendication 7, caractérisée en ce qu'elle a la composition massique suivante:50% de perchlorate de potassium,30% d'acide glutamique,10% d'acide myristique,10% d'un catalyseur (tel l'oxyde ferrique Fe203).
- Composition pyrotechnique selon la revendication 7, caractérisée en ce qu'elle a la composition massique suivante:60% de perchlorate d'ammonium,20% d'acide glutamique,10% d'acide myristique,5% de liant,5% d'un catalyseur (tel l'oxyde ferrique Fe2O3).
- Composition pyrotechnique selon la revendication 7, caractérisée en ce qu'elle a la composition massique suivante:50% de perchlorate d'ammonium,30% d'acide glutamique,10% d'acide myristique,10% d'un catalyseur (tel l'oxyde ferrique Fe2O3).
- Composition pyrotechnique selon la revendication 7, caractérisée en ce qu'elle a la composition massique suivante:50% de perchlorate d'ammonium,40% d'acide ascorbique,10% d'acide myristique.
- Composition pyrotechnique selon la revendication 7, caractérisée en ce qu'elle a la composition massique suivante:60% de perchlorate de potassium,30% d'acide acétylsalicylique,5% d'acide myristique,5% d'un catalyseur (tel l'oxyde ferrique Fe2O3).
- Composition pyrotechnique selon la revendication 7, caractérisée en ce qu'elle a la composition massique suivante:60% de perchlorate de potassium,30% d'acide acétylsalicylique,10% d'acide myristique.
- Composition pyrotechnique selon la revendication 7, caractérisée en ce qu'elle a la composition massique suivante:57% de perchlorate de potassium,13% à 33% d'acide fumarique,5% à 20% d'acide myristique,0 à 10% d'un catalyseur (tel l'oxyde ferrique Fe2O3).
- Composition pyrotechnique selon la revendication 15, caractérisée en ce qu'elle a la composition massique suivante:57% de perchlorate de potassium,33% d'acide fumarique,10% d'acide myristique.
- Composition pyrotechnique selon la revendication 15, caractérisée en ce qu'elle a la composition massique suivante:57% de perchlorate de potassium,13% d'acide fumarique,20% d'acide myristique.10% d'oxyde ferrique Fe2O3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0406390A FR2871457B1 (fr) | 2004-06-10 | 2004-06-10 | Composition pyrotechnique ayant une tenue mecanique amelioree |
| FR0406390 | 2004-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1604963A2 true EP1604963A2 (fr) | 2005-12-14 |
| EP1604963A3 EP1604963A3 (fr) | 2012-11-21 |
Family
ID=34949799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05291154A Withdrawn EP1604963A3 (fr) | 2004-06-10 | 2005-05-30 | Composition pyrotechnique ayant une tenue mécanique améliorée |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1604963A3 (fr) |
| FR (1) | FR2871457B1 (fr) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7947649B2 (en) | 2008-04-14 | 2011-05-24 | Advanced Technologies And Regenerative Medicine, Llc | Liquid buffered GDF-5 formulations |
| US7956028B2 (en) | 2006-12-14 | 2011-06-07 | Johnson & Johnson Regenerative Therapeutics, Llc | Protein stabilization formulations |
| US7964561B2 (en) | 2007-06-29 | 2011-06-21 | Advanced Technologies And Regenerative Medicine, Llc | Protein formulations for use at elevated temperatures |
| US8058237B2 (en) | 2007-08-07 | 2011-11-15 | Advanced Technologies & Regenerative Medicine, LLC | Stable composition of GDF-5 and method of storage |
| EP4378917A1 (fr) * | 2022-12-01 | 2024-06-05 | ZF Airbag Germany GmbH | Élément de charge propulsive et procédé de fabrication d'un élément de charge propulsive |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2998566B1 (fr) | 2012-11-23 | 2021-08-20 | Nexter Munitions | Composant generateur de gaz pyrotechnique |
| CN103086811B (zh) * | 2013-02-03 | 2015-07-22 | 福建达安能源实业有限责任公司 | 一种粉状乳化炸药生物型专用脂 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB630981A (en) * | 1946-11-22 | 1949-10-25 | Percy Alfred Harry Goldsmith | Improvements in and relating to compositions for ignition of combustible gas producing charges or heating mixtures |
| GB1601392A (en) * | 1978-04-12 | 1981-10-28 | Pyrodex Corp | Gas generating compositions |
| EP0543026A4 (en) * | 1991-05-28 | 1995-03-29 | Daicel Chem | Gas generating agent |
| US5518054A (en) * | 1993-12-10 | 1996-05-21 | Morton International, Inc. | Processing aids for gas generants |
| AUPP366198A0 (en) * | 1998-05-22 | 1998-06-18 | Orica Australia Pty Ltd | Anfo composition |
| DE19932466A1 (de) * | 1999-07-12 | 2001-01-18 | Trw Airbag Sys Gmbh & Co Kg | Azidfreie gaserzeugende Zusammensetzung |
-
2004
- 2004-06-10 FR FR0406390A patent/FR2871457B1/fr not_active Expired - Fee Related
-
2005
- 2005-05-30 EP EP05291154A patent/EP1604963A3/fr not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7956028B2 (en) | 2006-12-14 | 2011-06-07 | Johnson & Johnson Regenerative Therapeutics, Llc | Protein stabilization formulations |
| US8435943B2 (en) | 2006-12-14 | 2013-05-07 | Advanced Technogies And Regenerative Medicine, Llc | Protein stabilization formulations |
| US8895506B2 (en) | 2006-12-14 | 2014-11-25 | DePuy Synthes Products, LLC | Protein stabilization formulations |
| US7964561B2 (en) | 2007-06-29 | 2011-06-21 | Advanced Technologies And Regenerative Medicine, Llc | Protein formulations for use at elevated temperatures |
| US8058237B2 (en) | 2007-08-07 | 2011-11-15 | Advanced Technologies & Regenerative Medicine, LLC | Stable composition of GDF-5 and method of storage |
| US7947649B2 (en) | 2008-04-14 | 2011-05-24 | Advanced Technologies And Regenerative Medicine, Llc | Liquid buffered GDF-5 formulations |
| EP4378917A1 (fr) * | 2022-12-01 | 2024-06-05 | ZF Airbag Germany GmbH | Élément de charge propulsive et procédé de fabrication d'un élément de charge propulsive |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2871457A1 (fr) | 2005-12-16 |
| EP1604963A3 (fr) | 2012-11-21 |
| FR2871457B1 (fr) | 2006-08-11 |
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| RIC1 | Information provided on ipc code assigned before grant |
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