EP1216977A2 - Compositions pyrotechniques génératrices de gaz à liant hydrocarboné et procédé de fabrication en continu - Google Patents
Compositions pyrotechniques génératrices de gaz à liant hydrocarboné et procédé de fabrication en continu Download PDFInfo
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- EP1216977A2 EP1216977A2 EP01403255A EP01403255A EP1216977A2 EP 1216977 A2 EP1216977 A2 EP 1216977A2 EP 01403255 A EP01403255 A EP 01403255A EP 01403255 A EP01403255 A EP 01403255A EP 1216977 A2 EP1216977 A2 EP 1216977A2
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- Prior art keywords
- composition
- gum
- nitrate
- binder
- compartment
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B25/00—Compositions containing a nitrated organic compound
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- 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
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- 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
- C06B21/0033—Shaping the mixture
- C06B21/0075—Shaping the mixture by extrusion
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B29/00—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate
- C06B29/22—Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate the salt being ammonium perchlorate
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- 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
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- 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
Definitions
- the present invention relates to the field technique of pyrotechnic gas generation usable in particular in protection systems occupants of a motor vehicle by means of cushions which are inflated by the combustion gases of a pyrotechnic charge. More specifically the invention relates to pyrotechnic compositions generating acceptable temperatures for automotive safety clean, non-toxic gases. The invention relates to also a continuous manufacturing process for such compositions.
- pyrotechnic gas generators For different pyrotechnic needs and in particular to ensure correct inflation of the cushions protection, pyrotechnic gas generators must supply in extremely short time, around thirty milliseconds, clean gases that is to say free of solid particles liable to create hot spots that can damage the wall cushion, and non-toxic i.e. low nitrogen oxides, carbon oxides and chlorinated products.
- a first family relates to compositions based on alkali or alkaline earth azide in the presence of a mineral oxidant such as potassium nitrate or a metal oxide.
- These compositions which may optionally include a binder have major drawbacks. On the one hand they produce during their combustion a lot of dust which must be filtered by relatively large filtration systems, which increases both the weight and the price of the generator.
- azides are very toxic products which also have the possibility of forming lead azides or other heavy metals which are primary explosives. These compositions are therefore difficult to keep in good conditions for several years in a motor vehicle.
- compositions with nitrocellulose and nitroglycerin base are very interesting because they burn very quickly and without producing dust. However, they have the disadvantage of not be completely stable over time, and at high temperature.
- compositions say "composites” basically made up of a organic binder and by an oxidizing mineral filler like in particular a mineral perchlorate. These compositions are a priori very interesting because they present good burning speed and excellent stability to aging.
- compositions have also been proposed constituted by a silicone binder crosslinkable to room temperature, also known as linking “RTV” (Room Temperature Vulcanizable), and potassium perchlorate, the potassium atom playing the role of internal chlorine sensor.
- RTV Room Temperature Vulcanizable
- Such compositions are, for example, described in patents FR-A-2 190 776 and FR-B-2 213 254 or in their US correspondents US-A-3,986,908 and US-A-3,964,256.
- these compositions exhibit the disadvantage of generating gases very rich in oxygen that are not wanted by the manufacturers of automobile industry.
- compositions constituted by a silicone binder and by a mixture of ammonium perchlorate and sodium nitrate.
- Such compositions do not contain a solvent. They are for example described in French patent FR-A-2 728 562 or in its American correspondent US-A-5 610 444. These compositions generate many clean gases, rich in nitrogen and non-toxic but have the drawback of burning at very high temperatures and produce a high solid residue level.
- the methods of manufacturing existing compositions involve the presence of a solvent to adjust the viscosity.
- the use of a solvent has many drawbacks, especially at the industrial level. The solvent must be removed from the composition and this operation risks creating porosities in the pyrotechnic charge.
- the object of the present invention is precisely to propose such compositions and a method allowing to implement them.
- the invention therefore relates to a gas-generating pyrotechnic composition
- a binder an organic nitrogen compound, additives and an oxidizing charge comprising ammonium perchlorate and a chlorine sensor
- said binder being a hydrocarbon binder containing at least two components, one of the components being constituted by a gum, characterized in that, when the gum is a polyester gum, it is associated with a polyester resin and in that, when the gum is an acrylic gum, it is associated with one of its plasticizers.
- a polymer whose molecular mass is greater than 200,000 is called gum.
- the acrylic gums used are also called acrylic rubbers or polyacrylates. These gums can have reactive terminations of the chlorine / carboxyl, chlorine, hydroxyl or epoxy type.
- the polyester gums used are rubbers with ester units and which can have reactive hydroxyl type terminations.
- Resin is a hydrocarbon polymer whose mass molecular is between 100 and 10,000.
- the binder is formed by the association of an acrylic gum and one of its plasticizers.
- the plasticizer for acrylic gum is chosen from the group consisting of dioctyl adipate and dioctyl azelate.
- a crosslinker will generally be associated with the binder.
- the binder is formed by the association of an eraser polyester and polyester resin.
- the composition further comprises an isocyanate crosslinker.
- the weight content of the charges is greater than or equal to 85% of the total weight of the composition.
- the oxidizing charge includes ammonium perchlorate and a chlorine sensor.
- the chlorine sensor is chosen from the group consisting of sodium nitrate, calcium carbonate, lithium carbonate, potassium nitrate, strontium nitrate, barium nitrate, potassium chlorate, potassium perchlorate and copper oxide.
- a preferred chlorine sensor is sodium nitrate.
- the composition also includes a compound organic nitrogen.
- the organic nitrogen compound is chosen in the group consisting of nitroguanidine, the guanidine nitrate, aminoguanidine nitrate, oxamide, dicyandiamide, guanyl direedinitramide and metallic cyanamides.
- the content by weight of this nitrogen compound is between 3 and 15% of the total weight of the composition.
- the composition also comprises a ballistic catalyst chosen from the group consisting of titanium oxide, copper oxide, basic copper nitrate, copper chromite and iron oxide .
- the preferred ballistic catalyst is iron oxide.
- the weight content of the ballistic catalyst is preferably between 0% and 4% of the total weight of the composition. Among other things, it improves the combustion speed.
- the composition further comprises a wetting agent.
- This wetting agent is chosen from the group consisting of organosilanes, titanates and aziridines.
- the preferred organosilanes are the trialkyl silanes in which the functional group is a vinyl, epoxy, amine or metacrylic group.
- the weight content of the wetting agent is preferably between 0.5% and 2% of the total weight of the composition. This component reduces the residual porosity of the product.
- Ballistic catalyst and wetting agent constitute the preferred additives of the compositions according to the invention.
- the organic nitrogen compound and gum are premixed and introduced into the mixing compartment and mixing through the solids feed opening.
- the pressure of the compression compartment is less than 50 ⁇ 10 3 Pa, ie 500 mbar.
- the temperature of the mixing compartment and mixing is between 15 ° C and 75 ° C.
- the pressure in the extrusion head is between 6.10 6 Pa and 15.10 6 Pa, ie between 60 bars and 150 bars.
- the hydrocarbon binder comprises on the one hand a gum and on the other hand a liquid constituent which is either a resin or a plasticizer.
- a pasty binder is therefore obtained.
- this binder has sufficient strength to be extruded in the form of rods. There is therefore no need for a thickening agent or a solvent.
- the rods are then cut into loads and the structure of the binder is definitively frozen by crosslinking in an oven at a temperature between 100 ° C and 150 ° C.
- Figure 1 represents, in the form of partially cut diagram, an installation allowing the implementation of the method according to the invention.
- the twin-screw extruder-mixer 1 comprises an upstream part 2 in which the operations for mixing and kneading the composition are situated, a downstream part 3 in which the degassing operation for the composition takes place and a head for extrusion 4. During operation, a plug of material is formed which separates the downstream part 2 from the upstream part 3.
- the upstream part 2 will be called “mixing and kneading compartment” and the downstream part 3 "compression compartment".
- the gum and the nitrogenous organic compound are premixed.
- the eraser will be an eraser acrylic and the nitrogen compound will be nitrate of guanidine.
- the inert constituents namely the plasticizer and the various additives
- the oxidizing charges and the gum / nitrogenous organic compound mixture are then introduced.
- the various constituents are continuously introduced into the mixing and kneading compartment.
- Solids A are introduced without solvent by means of a hopper.
- the liquids B are introduced without solvent by means of a metering pump 6.
- the liquids B consist of the plasticizer and the wetting agent.
- Solids A are the acrylic gum / guanidine nitrate mixture, the oxidizing charge comprising ammonium perchlorate and the additives other than the wetting agent. Particles of ammonium perchlorate of two different particle sizes are used.
- the particle size is between 10 ⁇ m and 50 ⁇ m. Since ammonium perchlorate produces chlorine derivatives by combustion, it has a chlorine sensor attached to it.
- the preferred chlorine sensor in the context of the invention is sodium nitrate which fixes the chlorine in the form of sodium chloride of submicron size, therefore without risk of damaging the walls of the airbag.
- Sodium nitrate will also be introduced through the feed opening for solids A.
- the ratio between ammonium perchlorate and sodium nitrate is between 1 and 2.
- the rate of oxidizing charges is preferably around 80% of the total weight of the composition, to have a composition fairly balanced in oxygen balance.
- the weight content of the fillers is greater than or equal to 85% of the total weight of the composition. They are therefore compositions with a highly charged binder. The content of the binder and crosslinker composition will advantageously be close to 15%.
- the preferred additives are the wetting agent and the ballistic catalyst.
- the preferred ballistic catalyst is iron oxide.
- the paste formed in the mixing and kneading compartment 2 is then degassed in the compression compartment 3, under a pressure of less than 30.10 3 Pa, or 300 mbar.
- This paste is then extruded, by means of an extrusion head 4, in the form of rods 8.
- the pressure in the extrusion head is preferably close to 100 bars.
- These rods are then cut into loads 9 using a cutting device 10.
- These loads 9 are recovered by a conveyor belt 11 and routed to an oven 12.
- This oven 12 is heated to a temperature between 100 and 150 ° C. Preferably, this oven is heated to 120 ° C.
- the loads remain approximately 3 hours in this oven so as to complete the crosslinking of the constituents of the binder and thus to freeze the structure of the loads 9.
- the loads 9 have the form of hollow cylindrical blocks most often having axial channels.
- the charges thus formed find their preferred application as pyrotechnic charges in gas generators intended to inflate a protective cushion for occupants of a motor vehicle.
- the rate of combustion of these loads, as well as the rate of solid residues produced and the rate of carbon monoxide and nitrogen oxides produced are particularly suitable for the requirements of automobile safety.
- the examples which follow illustrate, without limitation, certain possibilities of implementing the invention.
- the weight content of the fillers is 87.9%
- the weight content of the fillers is 85%.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Air Bags (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
Un première famille concerne les compositions à base d'azoture alcalin ou alcalino-terreux en présence d'un oxydant minéral comme le nitrate de potassium ou d'un oxyde métallique. Ces compositions qui peuvent le cas échéant comporter un liant présentent des inconvénients majeurs. D'une part elles produisent lors de leur combustion beaucoup de poussières qui doivent être filtrées par des systèmes de filtration relativement importants, ce qui augmente à la fois le poids et le prix du générateur. D'autre part les azotures sont des produits très toxiques qui présentent de surcroít la possibilité de former des azotures de plomb ou d'autres métaux lourds qui sont des explosifs primaires. Ces compositions sont donc difficiles à conserver dans de bonnes conditions pendant plusieurs années dans un véhicule automobile.
Les procédés de fabrication des compositions existantes impliquent la présence d'un solvant pour ajuster la viscosité. L'emploi d'un solvant présente de nombreux inconvénients et notamment au niveau industriel. Le solvant doit être éliminé de la composition et cette opération risque de créer des porosités dans le chargement pyrotechnique.
On appelle gomme un polymère dont la masse moléculaire est supérieure à 200 000. Les gommes acryliques utilisées sont aussi appelées caoutchoucs acryliques ou polyacrylates. Ces gommes peuvent avoir des terminaisons réactives de type chlore/carboxyle, chlore, hydroxyl ou époxy.
Les gommes polyester utilisées sont des caoutchoucs avec des motifs ester et qui peuvent avoir des terminaisons réactives de type hydroxyl.
Un réticulant sera généralement associé au liant.
Un capteur de chlore préféré est le nitrate de sodium.
Il permet entre autre d'améliorer la vitesse de combustion.
La teneur pondérale de l'agent mouillant est préférentiellement comprise entre 0,5% et 2% du poids total de la composition.
Ce composant permet de réduire la porosité résiduelle du produit.
- le mélangeur-extrudeur bis-vis comprend un compartiment de mélange et de malaxage, un compartiment de compression et une tête d'extrusion, et en ce que,
- les constituants solides et liquides sont introduits dans le compartiment de mélange et de malaxage par deux ouvertures d'alimentation différentes, une ouverture d'alimentation des solides et une ouverture d'alimentation des liquides, et en ce qu'ils sont, dans ce compartiment, transportés et malaxés, puis, en ce que,
- la pâte homogène ainsi formée est dégazée dans le compartiment de compression puis extrudée, à l'aide d'une tête d'extrusion sous forme de joncs, et enfin en ce que,
- les joncs ainsi formés sont découpés en chargements à l'aide d'un appareil de découpe, et en ce que ces dits chargements sont mis à réticuler à une température comprise entre 100°C et 150°C.
Les joncs sont ensuite découpés en chargements et la structure du liant est définitivement figée par réticulation en étuve à une température comprise entre 100°C et 150°C.
En cours de fonctionnement, il se forme un bouchon de matière qui sépare la partie aval 2 de la partie amont 3.
Dans la suite de la présente description, on appellera la partie amont 2 « compartiment de mélange et de malaxage » et la partie aval 3 « compartiment de compression ».
On utilise des particules de perchlorate d'ammonium de deux granulométries différentes. La granulométrie est comprise entre 10µm et 50µm.
Le perchlorate d'ammonium produisant par combustion des dérivés chlorés, il lui est adjoint un capteur de chlore. Le capteur de chlore préféré dans le cadre de l'invention est le nitrate de sodium qui fixe le chlore sous forme de chlorure de sodium de taille submicronique, donc sans risque de détérioration des parois du coussin gonflable.
Le nitrate de sodium sera également introduit par l'ouverture d'alimentation des solides A. Le ratio entre le perchlorate d'ammonium et le nitrate de sodium est compris entre 1 et 2.
Le taux de charges oxydantes est préférentiellement d'environ 80% du poids total de la composition, pour avoir une composition assez équilibrée en balance en oxygène.
Les additifs préférés sont l'agent mouillant et le catalyseur balistique. Le catalyseur balistique préféré est l'oxyde de fer.
Les constituants sont transportés et malaxés dans le compartiment de mélange et de malaxage 2. Les constituants sont malaxés au moyen des éléments de malaxage 7 de manière à former une pâte homogène. La température au sein de ce compartiment est comprise entre 15°C et 75°C.
Cette pâte est ensuite extrudée, au moyen d'une tête d'extrusion 4, sous forme de joncs 8. La pression dans la tête d'extrusion est de préférence voisine de 100 bars.
Ces joncs sont alors découpés en chargements 9 à l'aide d'un appareil de découpe 10. Ces chargements 9 sont récupérés par un tapis transporteur 11 et acheminés vers une étuve 12. Cette étuve 12 est chauffée à une température comprise entre 100 et 150°C. De préférence, cette étuve est chauffée à 120°C. Les chargements restent 3 heures environ dans cette étuve de manière à achever la réticulation des constituants du liant et à figer ainsi la structure des chargements 9.
Les chargements ainsi formés trouvent leur application préférentielle comme chargement pyrotechnique dans les générateurs de gaz destinés à gonfler un coussin de protection pour occupants d'un véhicule automobile. En effet, la vitesse de combustion de ces chargements, ainsi que le taux de résidus solides produits et le taux de monoxyde de carbone et d'oxydes d'azote produits conviennent particulièrement bien aux exigences de la sécurité automobile.
Les exemples qui suivent illustrent, à titre non limitatif, certaines possibilités de mise en oeuvre de l'invention.
- gomme acrylique : 5,5% du poids total de la composition
- plastifiant (adipate de dioctyle ou azélate de dioctyle) : 6,5% du poids total de la composition.
- perchlorate d'ammonium bigranulométrique n'exédant pas 50µm : 60,5% en poids, le perchlorate fin étant en excès pondéral par rapport au perchlorate de plus grosse granulométrie.
- nitrate de sodium : 20% en poids
- nitrate de guanidine : 5% en poids
- oxyde de fer : 1,5% en poids
- agent mouillant (vinyl silane) : 1% en poids
La température de combustion de cette composition est de l'ordre de 2400°C.
La vitesse de combustion est de 33mm/s sous 20 Mpa.
Les caractéristiques des gaz de combustion de 18g d'une telle composition sont les suivantes :
- teneur globale des gaz en résidus solides à la température de combustion : 15,5%
- teneur des gaz en monoxyde de carbone, pour un volume de 60 L : 4500 ppm
- teneur des gaz en oxydes d'azote, pour un volume de 60 L : 1000 ppm.
- gomme acrylique : 6,6% du poids total de la composition
- plastifiant (adipate de dioctyle ou azélate de
dioctyle) : 5,5% du poids total de la
composition.
La teneur en liant est donc de 12,1 % du poids total de la composition - perchlorate d'ammonium bigranulométrique n'excédant pas 50µm : 58,5% en poids, le perchlorate de plus grosse granulométrie étant en excès par rapport au perchlorate fin.
- nitrate de sodium : 15,9% en poids
- nitrate basique de cuivre : 6,5% en poids.
La teneur en charges oxydantes est de 80,9% en poids - agent mouillant (vinyl silane) : 1% en poids
- nitrate de guanidine : 6% en poids
La vitesse de combustion est de 43mm/s sous 20 Mpa.
Les caractéristiques des gaz de combustion de 18g d'une telle composition sont les suivantes :
- teneur globale des gaz en résidus solides à la température de combustion : 14,6%
- teneur des gaz en monoxyde de carbone, pour un volume de 60L : 4500ppm
- teneur des gaz en oxydes d'azote, pour un volume de 60L : 1000ppm.
- gomme polyester : 3,46% en poids
- résine polyester : 8,76% en poids
- agent réticulant (méthylène dicyclohexyl diisocyanate) : 2,78% en poids
- perchlorate d'ammonium bigranulométrique n'excédant pas 50 µm : 54% en poids, le perchlorate de plus grosse granulométrie étant en excès par rapport au perchlorate fin
- nitrate de sodium : 15,5% en poids
- oxyde de cuivre : 7% en poids
- nitrate de guanidine : 8,5% en poids
La vitesse de combustion est de 20mm/s sous 20Mpa.
Les caractéristiques des gaz de combustion de 18g d'une telle composition sont les suivantes :
- teneur globale des gaz en résidus solides à la température de combustion : 16,3%
- teneur des gaz en monoxyde de carbone, pour un volume de 60L : 4500ppm
- teneur des gaz en oxydes d'azote, pour un volume de 60L : 800ppm.
Claims (14)
- Composition pyrotechnique génératrice de gaz comprenant un liant, un composé organique azoté, des additifs et une charge oxydante comprenant du perchlorate d'ammonium et un capteur de chlore, ledit liant étant un liant hydrocarboné à au moins deux composants, l'un des composants étant constitué par une gomme, caractérisée en ce que, lorsque la gomme est une gomme polyester, elle est associée à une résine polyester et en ce que, lorsque la gomme est une gomme acrylique, elle est associée à un de ses plastifiants.
- Composition selon la revendication 1, caractérisée en ce que le plastifiant de la gomme acrylique est choisi dans le groupe constitué par l'adipate de dioctyle et l'azélate de dioctyle.
- Composition selon la revendication 1, caractérisée en ce que lorsque le liant est constitué par l'association d'une gomme polyester et d'une résine polyester, la composition comprend en outre un réticulant de type isocyanate.
- Composition selon la revendication 1, caractérisée en ce que la teneur pondérale des charges constituées par le composé organique azoté, les additifs et la charge oxydante, est supérieure ou égale à 85% du poids total de la composition.
- Composition selon la revendication 1, caractérisée en ce que ledit capteur de chlore est choisi dans le groupe constitué par le nitrate de sodium, le carbonate de calcium, le carbonate de lithium, le nitrate de potassium, le nitrate de strontium, le nitrate de barium, le chlorate de potassium, le perchlorate de potassium et l'oxyde de cuivre.
- Composition selon la revendication 5, caractérisée en ce que le capteur de chlore est le nitrate de sodium.
- Composition selon la revendication 1, caractérisée en ce que ledit composé organique azoté est choisi dans le groupe constitué par la nitroguanidine, le nitrate de guanidine, le nitrate d'aminoguanidine, l'oxamide, le dicyandiamide, le guanyluréedinitramide et les cyanamides métalliques.
- Composition selon la revendication 1 caractérisée en ce qu'elle comprend en outre un catalyseur balistique choisi dans le groupe constitué par l'oxyde de titane, l'oxyde de cuivre, le nitrate basique de cuivre, le chromite de cuivre et l'oxyde de fer.
- Composition selon la revendication 1 caractérisée en ce qu'elle comprend en outre un agent mouillant choisi dans le groupe constitué par les organo-silanes, les titanates et les aziridines.
- Procédé de fabrication en continu, sans solvant, dans un mélangeur-extrudeur bi-vis (1) de compositions pyrotechniques selon l'une quelconque des revendications 1 à 9 caractérisé en ce que :le mélangeur-extrudeur bi-vis (1) comprend un compartiment de mélange et de malaxage (2), un compartiment de compression (3) et une tête d'extrusion (4), et en ce queles constituants solides (A) et liquides (B) sont introduits dans le compartiment de mélange et de malaxage (2) par deux ouvertures d'alimentation différentes, une ouverture d'alimentation des solides et une ouverture d'alimentation des liquides, en ce qu'ils sont, dans ce compartiment, transportés et malaxés, puis, en ce que,la pâte homogène ainsi formée est dégazée dans le compartiment de compression (3) puis extrudée, à l'aide d'une tête d'extrusion (4) sous forme de joncs (8), et enfin en ce que,les joncs ainsi formés (8) sont découpés en chargements (9), à l'aide d'un appareil de découpe (10), et en ce que ces dits chargements (9) sont mis à réticuler à une température comprise entre 100°C et 150°C.
- Procédé selon la revendication 10, caractérisé en ce que le composé organique azoté et la gomme sont prémélangés et introduits dans le compartiment de mélange et de malaxage (2) par l'ouverture d'alimentation des solides.
- Procédé selon la revendication 10, caractérisé en ce que la pression du compartiment de compression (3) est inférieure à 50.103Pa.
- Procédé selon la revendication 10, caractérisé en ce que la température du compartiment de mélange et de malaxage (2) est comprise entre 15°C et 75°C.
- Procédé selon la revendication 10, caractérisé en ce que la pression dans la tête d'extrusion (4) est comprise entre 6.106Pa et 15.106Pa.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0016879A FR2818636B1 (fr) | 2000-12-22 | 2000-12-22 | Compositions pyrotechniques generatrices de gaz a liant hydrocarbone et procede de fabrication en continu |
FR0016879 | 2000-12-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1216977A2 true EP1216977A2 (fr) | 2002-06-26 |
EP1216977A3 EP1216977A3 (fr) | 2002-09-11 |
EP1216977B1 EP1216977B1 (fr) | 2005-07-27 |
Family
ID=8858087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01403255A Expired - Lifetime EP1216977B1 (fr) | 2000-12-22 | 2001-12-14 | Compositions pyrotechniques génératrices de gaz à liant hydrocarboné et procédé de fabrication en continu |
Country Status (10)
Country | Link |
---|---|
US (1) | US6824626B2 (fr) |
EP (1) | EP1216977B1 (fr) |
JP (1) | JP3825316B2 (fr) |
KR (1) | KR100446267B1 (fr) |
AT (1) | ATE300508T1 (fr) |
BR (1) | BR0106250B1 (fr) |
CA (1) | CA2364135C (fr) |
DE (1) | DE60112231T2 (fr) |
FR (1) | FR2818636B1 (fr) |
MX (1) | MXPA01012981A (fr) |
Cited By (10)
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FR2857359A1 (fr) * | 2003-07-10 | 2005-01-14 | Snpe Materiaux Energetiques | Composition pyrotechnique generatrice de gaz destinee a la securite automobile et brulant a des temperatures de combustion inferieures a 2200 k |
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FR2902783A1 (fr) * | 2006-06-27 | 2007-12-28 | Snpe Materiaux Energetiques Sa | Compositions pyrotechniques thermo-initiables, utilisation. |
FR2915746A1 (fr) * | 2007-05-02 | 2008-11-07 | Snpe Materiaux Energetiques Sa | Compose pyrotechnique generateur de gaz; procede d'obtention |
FR2950624A1 (fr) * | 2009-09-25 | 2011-04-01 | Snpe Materiaux Energetiques | Compose pyrotechnique generateur de gaz |
WO2011135262A1 (fr) | 2010-04-29 | 2011-11-03 | Sme | Compose pyrotechnique generateur de gaz; procede d'obtention. |
WO2013045804A1 (fr) | 2011-09-26 | 2013-04-04 | Herakles | Procede d'extraction de charges solides solubles contenues dans une pate. |
US10159861B2 (en) | 2013-06-28 | 2018-12-25 | Arianegroup Sas | Method for delivering a liquid pressurised by the combustion gases from at least one pyrotechnic charge |
WO2019063923A1 (fr) * | 2017-09-29 | 2019-04-04 | Arianegroup Sas | Composition generatrice de gaz |
EP3770136A1 (fr) * | 2019-07-25 | 2021-01-27 | ArianeGroup SAS | Propergol solide composite |
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US20040094250A1 (en) * | 2002-11-14 | 2004-05-20 | Estes-Cox Corporation | Composite propellant compositions |
US20050016646A1 (en) * | 2003-07-25 | 2005-01-27 | Barnes Michael W. | Chlorine-containing gas generant compositions including a copper-containing chlorine scavenger |
WO2007012348A1 (fr) * | 2005-07-26 | 2007-02-01 | Dalphi Metal España, S.A. | Composition generatrice de gaz destinee a une utilisation automobile fabriquee par formation de granules |
US7857920B1 (en) * | 2005-08-22 | 2010-12-28 | The United States Of America As Represented By The Secretary Of The Navy | Low temperature clean burning pyrotechnic gas generators |
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DE102011100113B4 (de) | 2010-06-28 | 2019-10-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Gasgenerator-Treibstoffzusammensetzung, Verfahrenzu ihrer Herstellung und deren Verwendung |
RU2496753C2 (ru) * | 2011-04-08 | 2013-10-27 | Открытое акционерное общество "Научно-производственное предприятие "Краснознамёнец" | Способ получения газогенерирующего пиротехнического состава с полимерным связующим |
FR2975097B1 (fr) * | 2011-05-09 | 2015-11-20 | Sme | Composes pyrotechniques generateurs de gaz |
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DE102019218387B4 (de) * | 2019-11-27 | 2021-12-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Messanordnung und Verfahren zur Bestimmung von Eigenschaften eines zu extrudierenden Materials während der Durchführung eines Schnecken-Extrusionsprozesses |
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- 2001-12-10 CA CA002364135A patent/CA2364135C/fr not_active Expired - Fee Related
- 2001-12-14 EP EP01403255A patent/EP1216977B1/fr not_active Expired - Lifetime
- 2001-12-14 AT AT01403255T patent/ATE300508T1/de not_active IP Right Cessation
- 2001-12-14 DE DE60112231T patent/DE60112231T2/de not_active Expired - Lifetime
- 2001-12-14 MX MXPA01012981A patent/MXPA01012981A/es active IP Right Grant
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- 2001-12-21 BR BRPI0106250-6A patent/BR0106250B1/pt not_active IP Right Cessation
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Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2857359A1 (fr) * | 2003-07-10 | 2005-01-14 | Snpe Materiaux Energetiques | Composition pyrotechnique generatrice de gaz destinee a la securite automobile et brulant a des temperatures de combustion inferieures a 2200 k |
EP1553071A2 (fr) * | 2004-01-12 | 2005-07-13 | TRW Airbag Systems GmbH | Procédé de gonflage d'un sac gonflable et module de sac gonflable utilisé dans ce procédé |
EP1553071A3 (fr) * | 2004-01-12 | 2013-04-24 | TRW Airbag Systems GmbH | Procédé de gonflage d'un sac gonflable et module de sac gonflable utilisé dans ce procédé |
FR2902783A1 (fr) * | 2006-06-27 | 2007-12-28 | Snpe Materiaux Energetiques Sa | Compositions pyrotechniques thermo-initiables, utilisation. |
WO2008001005A2 (fr) * | 2006-06-27 | 2008-01-03 | Snpe Materiaux Energetiques | Compositions pyrotechniques thermo-initiables, utilisation |
WO2008001005A3 (fr) * | 2006-06-27 | 2008-02-28 | Snpe Materiaux Energetiques | Compositions pyrotechniques thermo-initiables, utilisation |
CN101679139B (zh) * | 2007-05-02 | 2012-09-26 | Snpe巨能材料公司 | 产生气体的烟火组合物和其制造方法 |
FR2915746A1 (fr) * | 2007-05-02 | 2008-11-07 | Snpe Materiaux Energetiques Sa | Compose pyrotechnique generateur de gaz; procede d'obtention |
WO2008145935A2 (fr) | 2007-05-02 | 2008-12-04 | Snpe Materiaux Energetiques | Compose pyrotechnique generateur de gaz; procede d'obtention |
WO2008145935A3 (fr) * | 2007-05-02 | 2009-09-17 | Snpe Materiaux Energetiques | Compose pyrotechnique generateur de gaz; procede d'obtention |
FR2950624A1 (fr) * | 2009-09-25 | 2011-04-01 | Snpe Materiaux Energetiques | Compose pyrotechnique generateur de gaz |
FR2959508A1 (fr) * | 2010-04-29 | 2011-11-04 | Snpe Materiaux Energetiques | Compose pyrotechnique generateur de gaz; procede d'obtention |
WO2011135262A1 (fr) | 2010-04-29 | 2011-11-03 | Sme | Compose pyrotechnique generateur de gaz; procede d'obtention. |
WO2013045804A1 (fr) | 2011-09-26 | 2013-04-04 | Herakles | Procede d'extraction de charges solides solubles contenues dans une pate. |
US9393503B2 (en) | 2011-09-26 | 2016-07-19 | Herakles | Method for extracting solid soluble charges contained in a paste |
US10159861B2 (en) | 2013-06-28 | 2018-12-25 | Arianegroup Sas | Method for delivering a liquid pressurised by the combustion gases from at least one pyrotechnic charge |
WO2019063923A1 (fr) * | 2017-09-29 | 2019-04-04 | Arianegroup Sas | Composition generatrice de gaz |
FR3071831A1 (fr) * | 2017-09-29 | 2019-04-05 | Arianegroup Sas | Composition generatrice de gaz |
EP3770136A1 (fr) * | 2019-07-25 | 2021-01-27 | ArianeGroup SAS | Propergol solide composite |
FR3099155A1 (fr) * | 2019-07-25 | 2021-01-29 | Arianegroup Sas | Propergol solide composite |
Also Published As
Publication number | Publication date |
---|---|
FR2818636A1 (fr) | 2002-06-28 |
EP1216977B1 (fr) | 2005-07-27 |
CA2364135A1 (fr) | 2002-06-22 |
JP2002255679A (ja) | 2002-09-11 |
US20020079031A1 (en) | 2002-06-27 |
US6824626B2 (en) | 2004-11-30 |
DE60112231T2 (de) | 2006-05-24 |
KR20020051850A (ko) | 2002-06-29 |
CA2364135C (fr) | 2009-02-03 |
BR0106250A (pt) | 2002-08-13 |
EP1216977A3 (fr) | 2002-09-11 |
JP3825316B2 (ja) | 2006-09-27 |
MXPA01012981A (es) | 2002-10-21 |
FR2818636B1 (fr) | 2003-02-28 |
KR100446267B1 (ko) | 2004-09-01 |
ATE300508T1 (de) | 2005-08-15 |
BR0106250B1 (pt) | 2010-11-16 |
DE60112231D1 (de) | 2005-09-01 |
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