EP0068528B1 - Explosif de puissance élevée, à liant de matière plastique, formable a froid et son procédé de fabrication - Google Patents

Explosif de puissance élevée, à liant de matière plastique, formable a froid et son procédé de fabrication Download PDF

Info

Publication number
EP0068528B1
EP0068528B1 EP82200629A EP82200629A EP0068528B1 EP 0068528 B1 EP0068528 B1 EP 0068528B1 EP 82200629 A EP82200629 A EP 82200629A EP 82200629 A EP82200629 A EP 82200629A EP 0068528 B1 EP0068528 B1 EP 0068528B1
Authority
EP
European Patent Office
Prior art keywords
weight
desensitizing
binding agent
dispersion
process according
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.)
Expired
Application number
EP82200629A
Other languages
German (de)
English (en)
Other versions
EP0068528A1 (fr
Inventor
Paul Arni
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.)
SM Schweizerische Munitionsunternehmung AG
Original Assignee
EIDGENOESS MUNITIONSFAB THUN
Schweizerische Eidgenossenschaft
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 EIDGENOESS MUNITIONSFAB THUN, Schweizerische Eidgenossenschaft filed Critical EIDGENOESS MUNITIONSFAB THUN
Priority to AT82200629T priority Critical patent/ATE11906T1/de
Publication of EP0068528A1 publication Critical patent/EP0068528A1/fr
Application granted granted Critical
Publication of EP0068528B1 publication Critical patent/EP0068528B1/fr
Expired 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
    • C06B45/04—Compositions 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
    • C06B45/06—Compositions 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
    • C06B45/10—Compositions 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
    • 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
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S149/00—Explosive and thermic compositions or charges
    • Y10S149/11—Particle size of a component
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S149/00—Explosive and thermic compositions or charges
    • Y10S149/11—Particle size of a component
    • Y10S149/114—Inorganic fuel
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S149/00—Explosive and thermic compositions or charges
    • Y10S149/11—Particle size of a component
    • Y10S149/115—Organic fuel

Definitions

  • a high-performance explosive such as cyclotetramethylene tetranitramine or cyclotrimethylene trinitramine
  • a desensitizing and binding agent which contains an organic polymer
  • the invention also relates to a plastic-bound high-performance explosive containing at least 90% by weight of a high-performance explosive such as cyclotetramethylene tetranitramine or cyclotrimethylene trinitramine and a maximum of 10% by weight (in each case based on the weight of the plastic-bound high-performance explosive) of a desensitizing and binding agent made from an organic polymer with additives like wax and paraffin.
  • a high-performance explosive such as cyclotetramethylene tetranitramine or cyclotrimethylene trinitramine
  • a desensitizing and binding agent made from an organic polymer with additives like wax and paraffin.
  • the invention further relates to a method for producing a shaped body from the high-performance explosive in a mold by applying pressure.
  • a high-performance explosive is obtained by dispersing a high-performance explosive such as octogen (in the following used trivial name for cyclotetramethylene tetranitramine) in a rubber-like two-component binder which is made from a prepolymer two preferably terminal carboxyl groups and an epoxy-based crosslinking agent.
  • a desensitizing agent such as wax is added, as well as other auxiliaries such as catalysts for crosslinking the desensitizing and binding agent, antioxidants and wetting agents.
  • the binder components are first mixed in a kneader at elevated temperatures under vacuum; the desensitizing and binding agent is then mixed with the octogen under the same conditions. This gives a pourable mass, which is poured under vacuum and under the action of vibrations into molds in which the mass hardens over the course of a few days.
  • the known method is cumbersome in that the desensitizing and binding agent and the octogen have to be mixed under vacuum at elevated temperature in a kneading device and the subsequent casting process must also be carried out under vacuum. In addition, vibrations must be brought into effect in order to achieve the desired homogeneity.
  • the hardening times of several days for the desensitizing and binding agent additionally make the whole process time-consuming.
  • the high-performance explosive molded article thus obtained still contains more than 10% foreign matter, and its explosive power is therefore considerably reduced compared to that of the pure octogen.
  • the object of the invention is to provide a high-performance explosive of the aforementioned type, the effectiveness of which is close to that of the pure octogen and which has high mechanical strength with high safety in handling, and to provide a process which can be carried out with simple means for its production and processing.
  • Handling safety is understood to mean, among other things, both the safety during manufacture and processing, as well as the insensitivity to external influences in use, such as the dimensional stability (e.g. under the effects of shock when firing) and the mechanical strength of molded articles made therefrom.
  • an aqueous polymer dispersion in the presence of Auxiliaries and additives are mixed with a lubricant, with an aqueous paraffin dispersion and with a filler in such a way that the aqueous dispersion of the desensitizing and binding agent thus obtained is mixed with the dry explosive and that the mixture thus obtained is dried warm.
  • the inventive method uses aqueous dispersions of 'polymers and other components of the Phlegmatmaschines- and binder. so that they can be completely mixed with one another and with other constituents of the desensitizing and binding agent in a very short time using simple means at room temperature and under normal pressure.
  • the aqueous dispersion of the desensitizing and binding agent is then effectively combined with the octogen in a mixing drum in a very short time, also at room temperature and under normal pressure; the product thus obtained is dried in a very simple manner by a warm air stream.
  • the dry product is extremely safe to use.
  • the aqueous polymer dispersion can be prepared by mixing an aqueous dispersion of polyacrylic acid butyl ester with an aqueous dispersion of polyethylene and 5 to 15% by weight of polyethylene (based on the weight of the polyacrylic acid butyl ester) having an average particle size of 0.1 to 0 , 3 pm can be added; polytetrafluoroethylene as a lubricant, highly disperse silica gel, paraffin and calcium carbonate with a particle size of approximately 1 J.Lm can be added as a filler.
  • Poorly soluble compounds of the alkaline earth group such as magnesium pyrophosphate, calcium carbonate, calcium sulfate and barium sulfate, are added as fillers.
  • the aqueous polymer dispersion can be prepared from alkyl polyacrylate or alkyl polymethacrylate with an alkyl group of at least 3 carbon atoms and preferably contain butyl or isobutyl polyacrylate.
  • a first component containing part of the polymer, graphite as a lubricant and part of the paraffin and a second component containing calcium sulfate as a filler, the highly disperse silica gel and the rest of the paraffin can be used together and then with a third component of the aqueous dispersion of the desensitization - And binder are mixed, which contains cyclohexanone and the rest of the polymer in an isopropanol-water mixture.
  • the plastic-bound high-performance explosive according to the invention achieves the aforementioned object in that the desensitizing and binding agent contains a polymer based on polyacrylate or polymethacrylate, a lubricant and a filler.
  • the filler in the desensitizing and binding agent of the plastic-bound high-performance explosive according to the invention is selected from poorly soluble compounds of the alkaline earth group and is preferably magnesium pyrophosphate, calcium carbonate, calcium sulfate or barium sulfate.
  • the polymer can be a polyacrylic acid alkyl ester or polymethacrylic acid alkyl ester, preferably polyacrylic acid butyl ester -acrylic acid isobutyl ester, and the high-performance explosive with a desensitizing and binding agent composed of 18 to 50% by weight of butyl polyacrylic acid, 0.9 to 8% by weight of polyethylene, 2 to 7% by weight. -% polytetrafluoroethylene, 20 to 65% by weight calcium carbonate, 0.3 to 2.3% by weight silica gel and 3.2 to 20% by weight paraffin.
  • a desensitizing and binding agent composed of 18 to 50% by weight of butyl polyacrylic acid, 0.9 to 8% by weight of polyethylene, 2 to 7% by weight.
  • -% polytetrafluoroethylene 20 to 65% by weight calcium carbonate, 0.3 to 2.3% by weight silica gel and 3.2 to 20% by weight paraffin.
  • An antistatic variant of the high-performance explosive according to the invention can be made with a desensitizing and binding agent composed of 18 to 50% by weight of butyl polyacrylic acid, 25 to 65% by weight of graphite with an average particle size of 2.5 f.lm and a particle size distribution corresponding to 95% below 5 ⁇ m , 12 to 25% by weight of calcium sulfate, 0.3 to 2.3% by weight of silica gel and 3.5 to 20% by weight of paraffin.
  • a desensitizing and binding agent composed of 18 to 50% by weight of butyl polyacrylic acid, 25 to 65% by weight of graphite with an average particle size of 2.5 f.lm and a particle size distribution corresponding to 95% below 5 ⁇ m , 12 to 25% by weight of calcium sulfate, 0.3 to 2.3% by weight of silica gel and 3.5 to 20% by weight of paraffin.
  • the aforementioned object is achieved with regard to the method for further processing according to the invention in that the high-performance explosive is pressed in the mold at room temperature with a pressure in the range above 1.5 kbar.
  • the high-performance explosive manufactured according to the invention can thus be processed to shaped articles, for example also shaped charges, by cold pressing. This particularly simple method has not yet been used successfully with explosives with high proportions of octogen.
  • Bodies have densities above 1.8 g f cm 3 and detonation speeds above 8.6 km / s. They have improved mechanical strength and homogeneity and are less sensitive to impact or friction than expected; they are also thermally stable and, to a particular extent, are pressure-resistant and bulletproof.
  • the polyacrylic acid butyl ester increases the adhesion between the explosive particles in a manner sufficient for further processing and for the dimensional stability of the molded article ultimately produced.
  • the polyethylene improves the mechanical properties of the plastic film with regard to its desensitizing effect.
  • Neither polymer is known to date as a binder for octogen.
  • the polytetrafluoroethylene known per se as a lubricant, is present in a proportion which is matched to the abovementioned constituents and is chosen so high that the dimensional stability of the ultimately produced shaped body is not impaired, but the shaped body is removed from the mold smoothly and without damage after shaping can be.
  • Graphite especially with average particle sizes of 2.5 f Lm and particle size distributions corresponding to 95% below 5 ⁇ m, supports the desensitizing effect of the paraffin and prevents electrostatic charging of the explosive particles; it also acts as a lubricant and its amount is chosen so that the dimensional stability of the molded article ultimately produced is only insignificantly impaired, but the molded article can be removed from the mold smoothly and without damage after shaping.
  • the octogen has a particle size of less than 1.68 mm, preferably less than 0.5 mm.
  • the filler selected from poorly soluble compounds of the alkaline earth group is first added in order to increase the flowability of the particles of the high-performance explosive and to reduce their mutual adhesion through the binder coating.
  • a filler is one. has a considerable desensitizing effect, which, in conjunction with the aforementioned polymers, enables safe handling of high-performance explosives with octogen proportions of more than 90% by weight.
  • this addition unexpectedly increases the mechanical strength of the molded articles made from the high-performance explosive.
  • 39 kg of a commercially available aqueous dispersion of butyl polyacrylic acid (24% by weight, corresponding to 9.3 kg of butyl polyacrylic acid) are diluted with 8 l of water while stirring and initially with 0.7 kg of a silicone-based defoamer (10% by weight, corresponding to 0.07 kg) and 0.3 kg of a wetting agent based on alkanol polyglycol ether.
  • the mixture is stirred until it is homogeneous: 3.4 kg of a commercially available aqueous polyethylene dispersion (35% by weight, corresponding to 1.2 kg of polyethylene) are then added with further stirring.
  • stirring speed is sufficiently low (to avoid flocculation)
  • 2.5 kg of a commercially available aqueous dispersion of polytetrafluoroethylene (60% by weight corresponding to 1.5 kg of polytetrafluoroethylene; particle size 0.05 to 0.5 nm) are added.
  • 0.5 kg of a commercially available colloidal silica gel (average particle size 12 nm) is added, in portions and at a low stirring speed until it is completely wetted and then at a high stirring speed until the clumps that may have formed are completely distributed.
  • the first step is to work with a slow stirring speed and then to increase the viscosity of the initially pulpy mass until the mixture is thin.
  • 10 kg of dry octogen are mixed with 1 kg of the aqueous dispersion of the desensitizing and binding agent.
  • the mass is first circulated by hand and then mixed for 10 minutes in a mixing drum of the usual type.
  • the mixture is removed from the mixing drum, spread out flat and, with occasional circulation, dried by passing a warm air stream over it.
  • the high-performance explosive obtained in accordance with point 2 is cold-pressed in molds of conventional design under a pressure in the range from 1.5 to 4.2 kbar.
  • a pressure of approx. 3.5 kbar gives optimal results, especially with regard to the safety and performance achieved.
  • the moldings have a density of 1.81 g / cm 3 and above. Detonation speed: 8.6 km / s.
  • the impact sensitivity was examined with the monkey method according to Koenen and Ide.
  • a 2 kg drop hammer and 10 mm 3 samples only isolated, weak reactions were observed at a drop height of 25 cm and less than 30% or 50% reactions at 30 or 35 cm drop height.
  • a 5 kg drop hammer and 40 mm 3 samples no reactions were observed at a drop height of 30 cm, only occasional reactions occurred at 3 5 cm and 0-20% reactions occurred at 40 cm.
  • a prepared third component of the desensitizing and binding agent which consists of 0.6 kg of cyclohexanone and 8.3 kg of a commercially available dispersion of polyacrylic acid butyl acrylate (40% by weight, corresponding to 3.3 kg of polyacrylic acid butyl acrylate) in isopropanol-water (mixture ratio 2: 1) consists of dispersing the mixture of the first and second components of the desensitizing and binding agent with an intensive stirrer. The stirring process is ended after 3 hours and repeated for 1 hour after one day. The desensitization and binder dispersion is then ready for use, but must be stirred before use.
  • aqueous desensitization and binder dispersion 1.015 kg of the aqueous desensitization and binder dispersion are mixed with 7 kg of dry octogen and evenly distributed over the explosive.
  • the mixture is then circulated in a mixing drum of the usual type, and after 10 minutes the desensitizing and binding agent is homogeneously distributed over the explosive.
  • the mixture is removed from the mixing drum, spread out flat and pre-dried with occasional circulation by passing a warm air stream over it.
  • the predried material is mixed in a rotating drum with 290 g of isopropanol-water (mixing ratio 1 1) corresponding to about 4% by weight and the mixture is circulated for 15 to 30 minutes.
  • the mixture is then removed from the mixing drum, spread out flat and, with occasional circulation, dried by passing a warm air stream over it.
  • the last-mentioned processes can also be carried out using a fluidized bed method, if necessary, taking into account relevant safety measures.
  • the high-performance explosive obtained in accordance with point 5 is cold-pressed in molds of conventional design under a pressure in the range from 1.5 to 4.2 kbar. Pressures of 2.2 to 3.5 kbar are usually sufficient, but the pressures can be increased for special requirements, even for shaped loads, high-performance loads.
  • the compacts have densities above 1.80 g / cm 3 .
  • the measured detonation speeds are 8.6 km / s and above.
  • the impact sensitivity was examined with the monkey method according to Koenen and Ide.
  • the results were particularly favorable for particle sizes below 0.5 mm: with a 2 kg drop hammer with an explosive volume of 10 mm 3 and with a 5 kg drop hammer with an explosive volume of 40 mm 3 , even with drop heights of 40 or 60 cm no reactions observed.
  • the compressive strength was measured on explosive compacts (compression pressure 1.9 to 4.2 ticm 2 ) with the shape of an equilateral cylinder at room temperature. With decreasing particle size and increasing pressure, increasing values for the compressive strength are obtained, which can be more than twice as high as the compressive strength of known wax-containing pressed bodies made of octogen. The compressive strength increases again by up to 30% as the compacts age (1 to 2 weeks at room temperature, 3 to 4 days at + 50 ° C).
  • explosives with the desired high density are obtained from fine-grained material using fine press material, which have the additional advantage of increased strength and reduced impact sensitivity. For this reason, such explosives are particularly safe to handle, to which their surface conductivity also makes an important contribution (surface resistance, measured according to DIN 53482, at a measuring voltage of 6V: a few kilo-ohms).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Lubricants (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Claims (38)

1. Procédé pour fabriquer un explosif à haute puissance contenant au moins 90 % en poids d'explosif à haute puissance tel que le cyclotétraméthylène tétranitramine ou le cyclotriméthylène trinitramine, et au plus 10 % en poids (respectivement rapportés au poids total = 100) d'un agent de stabilisation et de liaison contenant un polymère organique, procédé dans lequel on mélange d'abord les constituants de l'agent de stabilisation et de liaison, et on mélange ensuite le mélange ainsi obtenu avec l'explosif à haute puissance, caractérisé en ce qu'on mélange une dispersion aqueuse de polymère en présence d'adjuvants et d'additifs contenant un lubrifiant, avec une dispersion aqueuse de paraffine et une charge, que la dispersion aqueuse de l'agent de stabilisation et de liaison ainsi obtenue est mélangée avec l'explosif sec, et que le mélange ainsi obtenu est séché à chaud.
2. Procédé selon la revendication 1, caractérisé en ce que la dispersion aqueuse de polymère est fabriquée à partir d'un polyacrylate d'alkyle ou d'un polyméthacrylate d'alkyle ayant un groupe alkyle avec au moins 3 atomes de carbone et elle contient au moins 20% en poids du polymère (rapportés au poids de l'agent de stabilisation et de liaison).
3. Procédé selon la revendication 2, caractérisé en ce que le polymère est un polyacrylate de butyle ou d'isobutyle.
4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'on ajoute comme charge un composé alcalino-terreux, et que le composé alcalino-terreux est choisi de préférence dans le groupe comportant le pyrophosphate de magnésium, le carbonate de calcium, le sulfate de calcium et le sulfate de baryum.
5. Procédé selon la revendication 3 ou 4, caractérisé en ce que la dispersion aqueuse de polymère est fabriquée en mélangeant une dispersion aqueuse de polyacrylate de butyle avec une dispersion aqueuse de polyéthylène et qu'on ajoute 5 à 15 % en poids de polyéthylène (rapportés au poids du polyacrylate de butyle) ayant une dimension de particules moyenne comprise entre 0,1 et 0,3 µrn.
6. Procédé selon la revendication 5, càracté- risé en ce que la dispersion aqueuse de l'agent de stabilisation et de liaison est obtenue en ajoutant successivement les constituants à la dispersion aqueuse de polymère et en agitant intensivement.
7. Procédé selon la revendication 6, caractérisé en ce que le lubrifiant est du polytétrafluoroéthylène et qu'on ajoute à la dispersion aqueuse de polymère 2 à 7 % en poids de polytétrafluoroéthylène (rapportés au poids de l'agent de stabilisation et de liaison) en dispersion aqueuse.
8. Procédé selon la revendication 7, caractérisé en ce que, dans la dispersion aqueuse de polymère contenant le lubrifiant, on répartit 0,3 à 2,3 % en poids de gel de silice très bien dispersé (rapportés au poids de l'agent de stabilisation et de liaison).
9. Procédé selon la revendication 8, caractérisé en ce que la dispersion aqueuse de polymère contenant le lubrifiant et le gel de silice est mélangée, à grande vitesse d'agitation, avec une dispersion constituée de 10 à 45 parties en poids de paraffine dans 55 à 90 parties en poids d'eau et qu'on ajoute 8 à 20 % en poids de paraffine (rapportés au poids de l'agent de stabilisation et de liaison).
10. Procédé selon la revendication 9, caractérisé en ce qu'on mélange la dispersion aqueuse de polymère contenant le lubrifiant, le gel de silice et la paraffine, en agitant constamment à une vitesse d'agitation croissante, avec la charge solide.
11. Procédé selon la revendication 10, caractérisé en ce que la charge est de carbonate de calcium d'une granulométrie située autour de 1 (..Lm et qu'on ajoute de 20 à 65 % en poids environ de carbonate de calcium (rapportés au poids de !'agent de stabilisation et de liaison).
12. Procédé selon l'une des revendications 1 à 4, caractérisé en ce qu'un premier constituant de la dispersion aqueuse de l'agent de stabilisation et de liaison contenant le lubrifiant et un deuxième constituant de cette dispersion contenant la charge sont mélangés ensemble et sont ensuite mélangés avec un troisième constituant contenant du cyclohexanone et un mélange isopropanol-eau.
13. Procédé selon la revendication 12, caractérisé en ce que le premier constituant constitue une dispersion aqueuse de polymère dans laquelle sont dispersés successivement, en agitant intensément emt en faisant agir en même temps des ultrasons, le lubrifiant et une dispersion de 10 à 45 parties en poids de paraffine dans 55 à 90 parties en poids d'eau.
14. Procédé selon la revendication 13, caractérisé en ce que le polymère est un polyacrylate de butyle et la dispersion de polymère contient au moins 9,4 % en poids de polyacrylate de butyle (rapportés au poids de l'agent de stabilisation et de liaison), que le lubrifiant est du graphite ayant une granulométrie moyenne de 2,5 µm et une composition granulométrique correspondant à ' 95 % de particules inférieures à 5 wm, et qu'on ajoute à la dispersion de polymère 25 à 65 % en poids de graphite (rapportés au poids de l'agent de stabilisation et de liaison) et qu'on ajoute à la dispersion aqueuse de polymère contenant du graphite 0,48 % en poids de paraffine (rapportés au poids de l'agent de stabilisation et de liaison).
15. Procédé selon l'une des revendications 12 à 14, caractérisé en ce que le second constituant constitue une dispersion aqueuse de la charge dans laquelle on incorpore en remuant intensément et en faisant agir en même temps des ultrasons un gel de silice très bien dispersé, et qu'on ajoute ensuite de la paraffine en dispersion aqueuse contenant 10 à 45 % en poids de paraffine et 55 à 90 % en poids d'eau.
16. Procédé selon la revendication 15, caractérisé en ce que la charge est du sulfate de calcium et la dispersion aqueuse contient 12 à 25 % en poids de sulfate de calcium (rapportés au poids de l'agent de stabilisation et de liaison) et qu'on ajoute 0,3 à 2,3 % en poids de gel de silice très bien dispersé et au moins 3,2 % en poids de paraffine (rapportés respectivement au poids de l'agent de stabilisation et de liaison).
17. Procédé selon l'une des revendications 12 à 16, caractérisé en ce que le premier et le deuxième constituant sont mélangés par malaxage.
18. Procédé selon l'une des revendications 12 à 17, caractérisé en ce que le troisième constituant contient une dispersion de 8,6 à 19,2 % en poids de polyacrylate de butyle (rapportés au poids de l'agent de stabilisation et de liaison) dans un mélange isopropanol-eau (1 2).
19. Procédé selon la revendication 18, caractérisé en ce qu'on ajoute au troisième constituant 7,2 % en poids de cyclohexanone (rapportés au poids du troisième constituant).
20. Procédé selon l'une des revendications 12 à 19, caractérisé en ce que, pour fabriquer le premier constituant de la dispersion aqueuse de l'agent de stabilisation et de liaison, on disperse 6 parties en poids d'une dispersion aqueuse de polyacrylate de butyle et 5 parties en poids de graphite, en faisant agir des ultrasons, dans 9,7 parties en poids d'eau et qu'on les mélange en présence d'adjuvants et d'additifs avec 0,8 %. en poids de la dispersion aqueuse de paraffine, en ce que, pour fabriquer le deuxième constituant de la dispersion aqueuse de l'agent de stabilisation et de liaison, on disperse 2 parties en poids de sulfate de calcium, 0,16 partie en poids de gel de silice en faisant agir des ultrasons et en présence d'adjuvants et d'additifs, dans 6,7 parties en poids d'eau et qu'on ajoute ensuite en agitant 5.35 parties en poids de l'émulsion aqueuse de paraffine, en ce que le premier et le second constituants sont mélangés ensemble à 35 °C dans un rapport de poids de 3 : 2 ; et en ce qu'on mélange 35 parties en poids du mélange ainsi obtenu, en présence d'adjuvants et d'additifs, avec un troisième constituant, qui contient 3,3 parties en poids d'une dispersion de 40 parties en poids de polyacrylate de butyle dans 60 parties en poids d'un mélange isopropanol-eau (2:1).
21. Procédé selon l'une des revendications 1 à 20, caractérisé en ce qu'on mélange dans un tambour mélangeur 1 à 1,5 parties en poids de la dispersion aqueuse de l'agent de stabilisation et de liaison et 10 parties en poids de l'explosif à haute puissance.
22. Procédé selon la revendication 21, caractérisé en ce que l'explosif à haute puissance a une dimension de particules inférieure à 1,68 mm, de préférence inférieure à 0,5 mm.
23. Procédé selon la revendication 21 ou 22, caractérisé en ce que le mélange obtenu est étalé en couche plate et est séché dans un courant d'air chaud en le brassant.
24. Procédé selon la revendication 21 ou 22, caractérisé en ce que le mélange d'agent de stabilisation et de liaison et d'explosif à haute puissance subit un séchage préalable avec brassage, qu'il est ensuite traité dans un tambour mélangeur avec 2 à 10 % en poids (rapportés au poids du mélange = 100) d'un mélange alkanol- eau, de préférence isopropanol-eau (1 : 1) et qu'il est ensuite séché avec brassage.
25. Explosif à haute puissance lié par une matière plastique, contenant au moins 90 % en poids d'un explosif à haute puissance tel que le cyclotétraméthylène tétranitramine ou le cyclotriméthylène trinitramine et au maximum 10% en poids (respectivement rapportés au poids de l'explosif à haute puissance lié par une matière plastique) d'un agent de stabilisation et de liaison constitué d'un polymère organique avec des additifs constitués de cire et de paraffine, caractérisé en ce que l'agent de stabilisation et de liaison contient un polymère à base de polyacrylate ou de polyméthacrylate, un lubrifiant et une charge.
26. Explosif à haute puissance selon la revendication 25, caractérisé en ce que le polymère est un polyacrylate d'alkyle ou un polyméthacrylate d'alkyle comportant un groupe alkyle ayant au moins 3 atomes de carbone, et son pourcentage en agent de stabilisation et de liaison est d'au moins 18 % en poids.
27. Explosif à haute puissance selon la revendication 26, caractérisé en ce que le polyacrylate d'alkyle est un polyacrylate de butyle ou d'isobu- tyle.
28. Explosif à haute puissance selon l'une des revendications 25 à 27, caractérisé en ce que la charge est un composé alcalino-terreux difficilement soluble et que celui-ci est choisi de préférence dans le groupe comprenant le pyrophosphate de magnésium, le carbonate de calcium, le sulfate de calcium et le sulfate de baryum.
29. Explosif à haute puissance selon l'une des revendications 27 ou 28, caractérisé en ce que le polymère contient 5 à 15 % en poids de polyéthylène (rapportés au poids du polyacrylate d'alkyle) ayant une granulométrie comprise entre 0,1 et 0,3 wm.
30. Explosif à haute puissance selon la revendication 29, caractérisé en ce que le lubrifiant est du polytétrafluoroéthylène et le pourcentage de polytétrafluoroéthylène par rapport à l'agent de stabilisation et de liaison est compris entre 2 et 7 % en poids.
31. Explosif à haute puissance selon la revendication 30, caractérisé en ce que la charge est du carbonate de calcium ayant une dimension de particules de 1 ¡.Lm et le pourcentage du carbonate de calcium par rapport à l'agent de stabilisation et de liaison est compris entre 20 et 65 % en poids.
32. Explosif à haute puissance selon l'une des revendications 25 à 27, caractérisé en ce que le lubrifiant est du graphite d'une granulométrie moyenne de 2,5 ¡.Lm et d'une composition granulométrique correspondant à 95% de particules inférieures à 5 µm, et le pourcentage de graphite par rapport à l'agent de stabilisation et de liaison est compris entre 25 et 65 % en poids.
33. Explosif à haute puissance selon la revendication 32, caractérisé en ce que la charge est du sulfate de calcium et le pourcentage de sulfate de calcium par rapport à l'agent de stabilisation et de liaison est compris entre 15 et 25 % en poids.
34. Explosif à haute puissance selon l'une des revendications 25 à 33, caractérisé en ce que l'agent de stabilisation et de liaison contient 0,3 à 2,3 % en poids de gel de silice très bien dispersé (rapportés au poids total).
35. Explosif à haute puissance selon l'une des revendications 25 à 34, caractérisé en ce que l'agent de stabilisation et de liaison contient 3,7 à 20 % en poids de paraffine.
36. Explosif à haute puissance selon l'une des revendications 25 à 35, caractérisé en ce que l'explosif à haute puissance contient 90 à 97 % en poids de l'explosif à haute puissance ayant une granulométrie inférieure à 1,68 mm, de préférence inférieure à 0,5 mm.
37. Procédé pour fabriquer un corps moulé, constitué de l'explosif à haute puissance selon l'une des revendications 25 à 36, dans un moule en employant la pression, caractérisé en ce que l'explosif à haute puissance est moulé dans le moule à température ambiante à une pression située dans une plage au-dessus de 1,5 kbar.
38. Procédé selon la revendication 37, caractérisé en ce que la pression de moulage est comprise entre 1,5 et 4,2 kbar.
EP82200629A 1981-05-25 1982-05-24 Explosif de puissance élevée, à liant de matière plastique, formable a froid et son procédé de fabrication Expired EP0068528B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82200629T ATE11906T1 (de) 1981-05-25 1982-05-24 Kalt formbarer, kunststoffgebundener hochleistungssprengstoff und verfahren zu seiner herstellung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH340381 1981-05-25
CH3403/81 1981-05-25
CH1423/82 1982-03-09
CH142382 1982-03-09

Publications (2)

Publication Number Publication Date
EP0068528A1 EP0068528A1 (fr) 1983-01-05
EP0068528B1 true EP0068528B1 (fr) 1985-02-20

Family

ID=25687608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82200629A Expired EP0068528B1 (fr) 1981-05-25 1982-05-24 Explosif de puissance élevée, à liant de matière plastique, formable a froid et son procédé de fabrication

Country Status (10)

Country Link
US (1) US4428786A (fr)
EP (1) EP0068528B1 (fr)
CA (1) CA1195122A (fr)
DE (1) DE3262399D1 (fr)
DK (1) DK153388C (fr)
ES (1) ES512486A0 (fr)
FI (1) FI73661C (fr)
GR (1) GR76805B (fr)
NO (1) NO153452C (fr)
PT (1) PT74948B (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526633A (en) * 1982-11-08 1985-07-02 Ireco Incorporated Formulating and delivery system for emulsion blasting
NO153804C (no) * 1984-02-08 1986-05-28 Dyno Indusrtrier A S Nitroglyc Fremgangsmaate for belegning av krystallinske hoeyeksplosiver.
US4503004A (en) * 1984-03-12 1985-03-05 The United States Of America As Represented By The Secretary Of The Army Method of molding a red phosphorous pyrotechnic composition
DE3625412A1 (de) * 1986-07-26 1988-02-04 Messerschmitt Boelkow Blohm Verfahren zur herstellung eines kunststoffgebundenen explosivstoffs
SE460901B (sv) * 1987-06-04 1989-12-04 Exploweld Ab Vattenbestaendigt elastiskt spraengaemnesmaterial
CH673704A5 (fr) * 1987-06-17 1990-03-30 Eidgenoess Munitionsfab Thun
JPH07112537B2 (ja) * 1987-11-27 1995-12-06 ダイセル化学工業株式会社 発火または爆発性の高い物質の原料組成物の混合方法
US5547526A (en) * 1990-03-06 1996-08-20 Daimler-Benz Aerospace Ag Pressable explosive granular product and pressed explosive charge
DE4111752C1 (fr) * 1991-04-11 1992-09-17 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De
US5445690A (en) * 1993-03-29 1995-08-29 D. S. Wulfman & Associates, Inc. Environmentally neutral reformulation of military explosives and propellants
US5487851A (en) * 1993-12-20 1996-01-30 Thiokol Corporation Composite gun propellant processing technique
FR2749851B1 (fr) 1996-06-13 2000-02-25 Valeo Systemes Dessuyage Procede de fabrication d'un profile comportant une couche superficielle reduisant le coefficient de frottement avec une surface vitree a essuyer et lame d'essuyage obtenue par un tel procede
FR2749852B1 (fr) * 1996-06-13 2004-01-23 Valeo Systemes Dessuyage Solution pour realiser un revetement sur un profile, lame d'essuyage revetue d'une telle solution, procede pour revetir un profile d'un tel revetement et lame d'essuyage revetue d'un revetement, obtenue par un tel procede
DE19823999C2 (de) * 1998-05-28 2002-07-18 Nico Pyrotechnik Verfahren zur Herstellung von pyrotechnischen Anzündern
US6009810A (en) * 1998-07-08 2000-01-04 The United States Of America As Represented By The Secretary Of The Navy Airbag propellant
US6315930B1 (en) 1999-09-24 2001-11-13 Autoliv Asp, Inc. Method for making a propellant having a relatively low burn rate exponent and high gas yield for use in a vehicle inflator
US6402864B1 (en) 2000-10-27 2002-06-11 The United States Of America As Represented By The Secretary Of The Navy Low slag, reduced hazard, high temperature incendiary
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
US20100294113A1 (en) * 2007-10-30 2010-11-25 Mcpherson Michael D Propellant and Explosives Production Method by Use of Resonant Acoustic Mix Process
FR2954309B1 (fr) * 2009-12-21 2012-03-23 Eurenco France Explosif solide malleable et son obtention
DE102010044344A1 (de) * 2010-09-03 2012-03-08 Rheinmetall Waffe Munition Gmbh Kunststoffgebundene Sprengstoffformulierung
EP3514479B1 (fr) 2016-10-20 2024-02-28 RUAG Ammotec AG Projectile à usage multiple
RU2703204C1 (ru) * 2018-06-27 2019-10-15 Акционерное общество "Взрывгеосервис" Взрывчатый состав

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE722144C (de) * 1933-06-28 1942-07-02 Dynamit Act Ges Vormals Alfred Verfahren zur Herstellung nicht zusammenbackender pulverfoermiger Ammonsalpetersprengstoffe
US2597926A (en) * 1947-07-05 1952-05-27 Atlas Powder Co Pentaerythritol tetranitrate product
DE1239968B (de) * 1963-03-14 1967-05-03 Delet Selbsttragende Sprengstoffmasse mit viskos-elastischem Bindemittel, sowie Verfahren zu deren Herstellung
GB1089403A (en) * 1965-07-23 1967-11-01 Ici Ltd Explosive compositions
DE1446875A1 (de) * 1965-12-24 1968-11-21 Dynamit Nobel Ag Verfahren zur Erhoehung der elektrischen Oberflaechenleitfaehigkeit und Rieselfaehigkeit von kristallinen Sprengstoffen
FR2017104A1 (en) * 1968-08-30 1970-05-15 Dynamit Nobel Ag Moulded binder - contng compressed parts - made from powdered high explosives

Also Published As

Publication number Publication date
US4428786A (en) 1984-01-31
DE3262399D1 (en) 1985-03-28
FI73661C (fi) 1987-11-09
GR76805B (fr) 1984-09-04
NO821716L (no) 1982-12-26
PT74948A (en) 1982-06-01
DK153388B (da) 1988-07-11
DK235882A (da) 1982-11-26
EP0068528A1 (fr) 1983-01-05
NO153452C (no) 1986-05-07
ES8404668A1 (es) 1984-05-01
FI821814A0 (fi) 1982-05-21
DK153388C (da) 1988-11-28
NO153452B (no) 1985-12-16
PT74948B (en) 1984-11-26
FI73661B (fi) 1987-07-31
CA1195122A (fr) 1985-10-15
ES512486A0 (es) 1984-05-01

Similar Documents

Publication Publication Date Title
EP0068528B1 (fr) Explosif de puissance élevée, à liant de matière plastique, formable a froid et son procédé de fabrication
DE3586301T2 (de) Verfahren zum granulieren von pulverfoermigen stoffen und die erhaltenen produkte.
DE2733617C2 (fr)
DE69115711T2 (de) Verfahren zur arzneiformulierung sowie arzneimittel
EP0036481B1 (fr) Procédé de préparation d'explosifs liés par des polymères et produits obtenus selon ce procédé
DE2823002A1 (de) Verfahren zur herstellung von metallseifengranulat
DE2721603C3 (de) Beschichtete Körnchen aus Alkalimetallsalzen der Polyacrylsäure und Verfahren zu ihrer Herstellung
DE1571227A1 (de) Sprengstoffmassen
DE3831265C2 (fr)
EP0509200B1 (fr) Procédé de fabrication d'explosifs désensibilisés
DE69634253T2 (de) FREIFLIEßENDE, NICHTSTAUBENDE WASSERDISPERGIERBARE GRANULATE EINER WASSERUNLÖSlICHEN, HYDROPHOBEN AGRICHEMIKALIE
EP0423432A2 (fr) Explosif désensibilisé et son procédé de fabrication
DE3542919C2 (fr)
DE1068838B (de) Gekörnter russ und verfahren zu seiner herstellung
DE1667734B2 (de) Verfahren zur herstellung von getrennten, nicht-staubenden, fliessfaehigen schwefelteilchen
DE19727848B4 (de) Kautschukadditivgranulat, ein Verfahren zu seiner Herstellung sowie seine Verwendung
DE3512479A1 (de) Acetylen-russ und verfahren zu seiner herstellung
EP0072998B1 (fr) Corps de getter et procédé pour sa fabrication
DE3131909C2 (de) "Verfahren zur Herstellung einer körnigen organischen Kautschuk-Chemikalien-Zubereitung
DE2247371C3 (de) Verfahren zur Herstellung von unlöslichen Schwefel enthaltenden Granulaten
DE3605634A1 (de) Verfahren zur behandlung kristalliner sprengstoffe fuer hochleistungssprengladungen
DE3625412C2 (fr)
DE69108653T2 (de) Verfahren zur Herstellung von nicht löslichem granuliertem Schwefel mit verbesserter Fliessfähigkeit, Vulkanisierungsmittel und Schwefel enthaltende Gummizusammensetzungen.
BE1029025B1 (de) DNT enthaltender detonierender Verbundexplosivstoff
DE713160C (de) Verfahren zur Herstellung von Bremsmassen aus synthetischem Kautschuk

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19830205

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 11906

Country of ref document: AT

Date of ref document: 19850315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3262399

Country of ref document: DE

Date of ref document: 19850328

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 82200629.2

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: SCHWEIZERISCHE EIDGENOSSENSCHAFT, EIDG. MUNITIONSFABRIK THUN DER TRANSFER- SCHWEIZERISCHE EIDGENOSSENSCHAFT , SM SCHWEIZERISCHE MUNITIONSUNTERNEHMUNG DER GRUPPE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20000420

Year of fee payment: 19

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: SCHWEIZERISCHE EIDGENOSSENSCHAFT , SM SCHWEIZERISCHE MUNITIONSUNTERNEHMUNG DER GRUPPE TRANSFER- SM SCHWEIZERISCHE MUNITIONSUNTERNEHMUNG AG

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20000502

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000504

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20000515

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000524

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20000531

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000720

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000724

Year of fee payment: 19

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010412

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010524

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010524

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010524

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010623

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010623

NLS Nl: assignments of ep-patents

Owner name: SM SCHWEIZERISCHE MUNITIONSUNTERNEHMUNG AG

BERE Be: lapsed

Owner name: SCHWEIZERISCHE EIDGENOSSENSCHAFT VERTRETEN DURCH

Effective date: 20010531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010524

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020131

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20011201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020301

EUG Se: european patent has lapsed

Ref document number: 82200629.2