EP0446085B1 - Verfahren zur Herstellung temperaturbeständiger zerfallsfähiger Treibladungen, entsprechende Treibladungspulver sowie so hergestellte Treibladungen. - Google Patents

Verfahren zur Herstellung temperaturbeständiger zerfallsfähiger Treibladungen, entsprechende Treibladungspulver sowie so hergestellte Treibladungen. Download PDF

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Publication number
EP0446085B1
EP0446085B1 EP19910400319 EP91400319A EP0446085B1 EP 0446085 B1 EP0446085 B1 EP 0446085B1 EP 19910400319 EP19910400319 EP 19910400319 EP 91400319 A EP91400319 A EP 91400319A EP 0446085 B1 EP0446085 B1 EP 0446085B1
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Prior art keywords
powder
dinitropolystyrene
grains
weight
solvent
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EP19910400319
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English (en)
French (fr)
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EP0446085A1 (de
Inventor
Jacques Boileau
Louis Leneveu
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EURENCO FRANCE S.A.
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Societe Nationale des Poudres et Explosifs
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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
    • C06B45/02—Compositions or products which are defined by structure or arrangement of component of product comprising particles of diverse size or shape
    • 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
    • C06B21/0041—Shaping the mixture by compression
    • 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
    • C06B21/0083—Treatment of solid structures, e.g. for coating or impregnating with a modifier
    • 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
    • C06B45/18—Compositions or products which are defined by structure or arrangement of component of product comprising a coated component

Definitions

  • the present invention relates to the field of propellant charges for small and medium caliber tube weapons. More specifically, the invention relates to a process for the production of temperature-resistant fragmentable propellant charges as well as the powders and charges obtained by this method.
  • a fragmentable charge is obtained by compression of grains of propellant powder.
  • This compression is generally carried out on grains of powder impregnated with a nitrocellulose plasticizer or with a crosslinkable binder as described for example in US Patents 3,655,836 or FR 2,374,278.
  • thermoplastic binder A particularly interesting energetic thermoplastic binder is found to be polyvinyl nitrate.
  • a first possibility described for example in French patent 2 411 817, consists in carrying out the hot compression of a mixture of grains of powder and grains of binder composition based on polyvinyl nitrate.
  • a second possibility described for example in French patent 2,436,766, consists in carrying out the hot compression of grains of powder coated with a film based on polyvinyl nitrate.
  • the powder grains are coated by a coating operation during which a powder solution of polyvinyl nitrate in a volatile solvent is sprayed onto the powder grains.
  • Fragmentable charges obtained from propellant powder compressed in the presence of polyvinyl nitrate are effectively energetic and fragment very well at the time of firing but they have a limit of use linked to the poor temperature resistance of polyvinyl nitrate which softens from 70 ° C.
  • many current munitions have specifications for use which require good mechanical strength at least up to 100 ° C.
  • the object of the invention is precisely to propose such fragmentable propellant charges as well as a process for manufacturing these charges.
  • the invention therefore relates to a method for manufacturing fragmentable propellant charges for ammunition without a cartridge from propellant powder in grains, characterized in that in a first step, said grains of powder first undergo a coating operation during which a mixture containing at least one dinitropolystyrene, a stabilizer and a derivative of polvinyl alcohol chosen from the group consisting of polyvinyl nitrate and polyvinyl acetate is sprayed onto the powder grains, said mixture being in solution in a medium solvent, and in that, after evaporation of said solvent medium, in a second step, the powder grains thus obtained are compressed at a temperature between 100 ° C and 140 ° C.
  • the weight ratio between the dinitropolystyrene and the dinitropolystyrene unit-derivative of polyvinyl alcohol is between 25% and 75%.
  • part of the derivative of polyvinyl alcohol is replaced by cellulose acetate.
  • said solvent medium comprises at least one solvent for dinitropolystyrene chosen from the group consisting of cyclohexanone, tetraalkylureas such as tetramethylurea, nitrobenzene, butyrolactone and tetramethylene sulfone.
  • the invention also relates to the fragmentable propellant charges for ammunition without a cartridge obtained by the method according to the invention.
  • the invention relates in particular to the loadings in which the propellant powder in grains is a single nitrocellulose base powder.
  • the invention also relates to the propellant powder grains obtained at the end of the first step of the process according to the invention which are characterized in that said grains are coated with a film of a mixture containing at least one dinitropolystyrene, a stabilizer and a derivative of polyvinyl alcohol chosen from the group consisting of polyvinyl nitrate and acetate polyvinyl.
  • the method according to the invention therefore consists in a first step of coating grains of propellant powder with a film of an energetic thermoplastic material and in a second step of hot pressing the grains of powder thus coated.
  • propellant powder it is possible to use in the context of the present invention most of the propellant powders known to those skilled in the art. It is thus possible in particular to use powders with a simple nitrocellulose base or so-called “composite" powders constituted mainly by a nitramine such as hexogen or octogen and by an organic binder such as a polyurethane, a polyester, an acetobutyrate. cellulose alone or in admixture with nitrocellulose and triethyl citrate acetate.
  • composite powders constituted mainly by a nitramine such as hexogen or octogen and by an organic binder such as a polyurethane, a polyester, an acetobutyrate. cellulose alone or in admixture with nitrocellulose and triethyl citrate acetate.
  • powders containing nitroglycerin or more generally a nitrated oil such as so-called “double base” powders constituted by a mixture of nitrocellulose and nitroglycerine or powders called “multibase” constituted by nitrocellulose, nitroglycerin and one or more nitro energetic compounds such as nitroguanidine, hexogen, octogen, pentrite, dinitroglycolurile, etc ...
  • double base powders constituted by a mixture of nitrocellulose and nitroglycerine or powders called “multibase” constituted by nitrocellulose, nitroglycerin and one or more nitro energetic compounds such as nitroguanidine, hexogen, octogen, pentrite, dinitroglycolurile, etc ...
  • the Applicant recommends not using powders with a nitroglycerin or nitrated oil content greater than 25% by weight. For most shipments intended for small and medium caliber weapons, single nitrocellulose-based powders will usually be used
  • the geometry of the powder grain will depend on the dimensions and properties desired for the fragmentable load.
  • the powder grains, smoothed or unsmoothed, are therefore coated with a film of an energetic thermoplastic material.
  • this material is typically constituted by the mixture of at least one dinitropolystyrene, a stabilizer, and a derivative of polyvinyl alcohol chosen from the group consisting of polyvinyl nitrate and l polyvinyl acetate.
  • the weight ratio between the dinitropolystyrene and the assembly constituted by the dinitropolystyrene and the derivative (s) of polyvinyl alcohol must be between 25% and 75%.
  • Dinitropolystyrene is an organic polymer with the formula in which the symbols C, H, O, N represent carbon, hydrogen, oxygen and nitrogen respectively and n represents an integer.
  • dinitropolystyrenes of different molecular weights can be used, but those whose softening temperature is higher than 260 ° C. are preferred.
  • Dinitropolystyrene is advantageously obtained by nitration of polystyrene according to the techniques described, for example, in the following works: Mémorial des Poudres, volume 35, 1953, pages 41 to 50 (Boniau, Pujo, Lang), Encyclopedia of Explosives and Relative Items, volume 8, 1978, pages 143-144, or even in US patent 3,715,323.
  • stabilizer of the mixture conventional stabilizers of nitro compounds such as diphenylamine or 2-nitro-diphenylamine can be used, however the preferred stabilizer is 2-nitro-diphenylamine.
  • This stabilizer will be present in the mixture at a rate of approximately 2% by weight of the total weight of the dinitropolystyrene assembly and derivatives of polyvinyl alcohol.
  • the mixture coating the powder grains therefore contains at least one derivative of polyvinyl alcohol chosen from the group consisting of polyvinyl nitrate and polyvinyl acetate. It can simultaneously contain these two derivatives.
  • part of the derivatives of polyvinyl alcohol can be replaced by cellulose acetate but, and this is an important condition for implementing the invention, cellulose acetate cannot completely replace polyvinyl alcohol derivatives.
  • the derivatives of polyvinyl alcohol, polyvinyl nitrate and / or polyvinyl acetate must represent at least one third by weight of the total weight of the cellulose acetate + derivatives of polyvinyl alcohol.
  • the solvent medium comprises at least one dinitropolystyrene solvent chosen from the group consisting of cyclohexanone, tetramethylurea, nitrobenzene, butyrolactone and tetramethylene sulfone still known under the trade name SULFOLANE®, so as to ensure good dissolution of the dinitropolystyrene .
  • the preferred solvents for dinitropolystyrene in the context of the invention are cyclohexanone, tetramethylurea and tetramethylene sulfone.
  • said solvent is used in admixture with an auxiliary solvent which is a good solvent for derivatives of polyvinyl alcohol and cellulose acetate.
  • Acetone is a preferred auxiliary solvent in the context of the present invention.
  • the amount of coating material deposited on the powder grains should be about two percent of the weight of the powder.
  • This deposition is carried out by spraying the solution of coating material onto the powder grains, for example in a rotating bezel as for a conventional smoothing operation. After spraying the solution, the solvent medium is removed by air drying, optionally supplemented by drying in an oven, at atmospheric pressure or under vacuum.
  • the powder grains thus coated are then compressed to the shape and dimensions of the desired fragmentable load.
  • This compression is advantageously carried out at a temperature between 100 ° C and 140 ° C.
  • a pressure close to 100 bars, or 10 replenish Pa, is generally sufficient for the usual loads intended for small and medium-caliber weapons.
  • This second step of the process can take place either immediately after the first step or later in time as explained later in the description.
  • the invention also relates to the fragmentable propellant charges thus obtained.
  • load is meant in the sense of the present application either the propellant load in its entirety if it consists of a single element, or an element constituting the load if the latter consists of a plurality of elements.
  • loads obtained by agglomeration of powder grains coated according to the invention have good mechanical strength when cold and still retain a certain mechanical strength at 100 ° C., in contrast to the loads obtained by agglomeration of powder grains coated only with polyvinyl nitrate . Furthermore, the loads according to the invention have ballistic properties comparable to those of traditional loads and in particular exhibit, on combustion, a perfectly correct fragmentation.
  • the propellant charges according to the invention obtained from propellant powder with a simple nitrocellulose base will advantageously be used, this powder being the most common and the most common today. economic.
  • the invention also relates to the powders constituting the loads according to the invention. More specifically, the invention relates to the propellant powder grains obtained at the end of the first step of the process according to the invention after evaporation of the solvent medium. These powder grains are coated with a film of a mixture containing at least one dinitropolystyrene, a stabilizer and a derivative of polyvinyl alcohol chosen from the group consisting of polyvinyl nitrate and polyvinyl acetate.
  • the invention particularly relates to the coated grains obtained from a single-base nitrocellulose powder. Such powder grains keep well over time and can be easily transported. They thus make it possible to dissociate, in time and even in space, the two stages of the method according to the invention, according to the needs.
  • the powder used is a conventional powder based on nitrocellulose in cylindrical grains having a central hole, web (thickness to be burned) 0.25 mm. At the start, the powder is not smoothed and not graphitized and its potential is 4,034 joules / g, ie 965 cal / g.
  • the powder is coated as follows: 5 kg of powder, 2.5 g of graphite are introduced into a bezel heated to 25 ° C. and a coating solution is sprayed, the overall composition of which is the next one : - polyvinyl nitrate 2% of the weight of the powder - acetone 20% of the weight of the powder - ethanol 4% of the weight of the powder - 2-nitro diphenylamine 0.04% by weight of the powder
  • the temperature of the coating solution is 60 ° C, the temperature of the pan being 25 ° C.
  • Solid fragmentable cylindrical blocks 22 mm high and 12.6 mm in diameter are thus obtained, having the following characteristics: potential 3,840 joules / g or 918 cal / g aspect correct crush resistance + 21 ° C: 0.60 kN / cm2 + 100 ° C: mechanical strength too weak to be able to be measured.
  • Fragmentable charges according to the invention were made from propellant powder in grains coated with a mixture of polyvinyl nitrate (NPV) and dinitropolystyrene (DNPS) in the presence of 2-nitro diphenylamine (2-NDPA) as a stabilizer.
  • NPV polyvinyl nitrate
  • DNPS dinitropolystyrene
  • 2-NDPA 2-nitro diphenylamine
  • Example 2 The powder used was the same as that of Example 1 and the coating was carried out as described in Example 1 with coating solutions whose overall compositions were as follows: EX 2 EX 3 EX 4 EX 5 EX 6 NPV 1% 0.5% 1% 1.2% 1.5% DNPS 1% 1.5% 1% 0.8% 0.5% cyclohexanone 18% 18% 7% 5.6% 4% acetone 0% 0% 15% 18% 18% 2-NDPA 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04%
  • the percentages are expressed by weight relative to the total weight of the powder.
  • the dinitropolystyrene used had a nitrogen content of 14.81%, an average molecular weight of 500,000 and a softening point above 260 ° C. It is this dinitropolystyrene which was used in all the examples.
  • the compression of the coated grains was carried out in a similar manner to that described in Example 1, the compression temperature being 130 ° C.
  • the residual percentage of cyclohexanone is expressed by weight relative to the total weight of the load.
  • a fragmentable charge according to the invention was made from propellant powder in grains coated with a mixture of polyvinyl acetate (AcPV) and dinitropolystyrene (DNPS) in the presence of 2-nitro diphenylamine (2-NDPA) as stabilizer.
  • AcPV polyvinyl acetate
  • DNPS dinitropolystyrene
  • 2-NDPA 2-nitro diphenylamine
  • the powder used is the same as that of Example 1.
  • the coating is carried out as follows: into a bezel heated to 25 ° C. 5 kg of powder, 2.5 g of graphite are introduced and sprayed in four times a coating solution whose overall composition is as follows: - AcPV 1% of the weight of the powder - DNPS 1% of the weight of the powder - cyclohexanone 10% of the weight of the powder - acetone 10% of the weight of the powder - 2-NDPA 0.04% by weight of the powder
  • the temperature of the coating solution was 60 ° C. After spraying, the pan was left to rotate for 5 minutes with the doors open, then the powder was put to dry in an oven for 16 hours at 60 ° C. The coated powder was then introduced into a mold heated to 130 ° C., the powder was left in the mold for 5 minutes and was compressed for 1 minute at 107 Pa, ie 100 bars. Solid cylindrical fragmentable blocks 22 mm high and 12.6 mm in diameter were thus obtained, having the following characteristics: aspect correct potential 3,770 joules / g or 902 cal / g crush resistance + 21 ° C: 1.01 kN / cm2 + 100 ° C: 0.86 kN / cm2
  • a fragmentable charge according to the invention was made from propellant powder in grains coated with a mixture of dinitropolystyrene (DNPS), polyvinyl nitrate (NPV) and polyvinyl acetate (AcPV) in the presence of 2-nitro diphenylamine (2-NDPA) as a stabilizer.
  • DNPS dinitropolystyrene
  • NPV polyvinyl nitrate
  • AcPV polyvinyl acetate
  • 2-NDPA 2-nitro diphenylamine
  • Example 7 The procedure was as described in Example 7 with a coating solution whose overall composition was as follows: - DNPS 0.67% of the weight of the powder - NPV 0.67% of the weight of the powder - AcPV 0.67% of the weight of the powder - 2-NDPA 0.04% by weight of the powder - cyclohexanone 10% of the weight of the powder - acetone 10% of the weight of the powder
  • Fragmentable blocks were thus obtained having the following characteristics: aspect correct potential 3,860 joules / g or 924 cal / g crush resistance + 21 ° C: 0.66 kN / cm2 + 100 ° C: 0.44 kN / cm2
  • Examples 7 and 8 demonstrate that polyvinyl acetate can replace polyvinyl nitrate in all proportions in the context of the present invention.
  • a fragmentable charge according to the invention was made from propellant powder in grains coated with a mixture of dinitropolystyrene (DNPS), polyvinyl nitrate (NPV) and cellulose acetate (AcCell) in the presence of 2-nitro diphenylamine (2-NDPA) as a stabilizer.
  • DNPS dinitropolystyrene
  • NPV polyvinyl nitrate
  • AcCell cellulose acetate
  • 2-NDPA 2-nitro diphenylamine
  • Example 7 We proceeded as described in Example 7 with a solution coating whose overall composition was as follows: - DNPS 0.67% of the weight of the powder - NPV 0.67% of the weight of the powder - AcCell 0.67% of the weight of the powder - cyclohexanone 10% of the weight of the powder - acetone 10% of the weight of the powder - 2-NDPA 0.04% by weight of the powder
  • Fragmentable blocks were thus obtained having the following characteristics: aspect correct potential 3,854 joules / g or 922 cal / g crush resistance + 21 ° C: 0.24 kN / cm2 + 100 ° C: 0.23 kN / cm2
  • Example 7 The procedure was as described in Example 7 with a coating solution whose overall composition was as follows: - DNPS 1% of the weight of the powder - AcCell 1% of the weight of the podure - 2-NDPA 0.04% by weight of the powder - cyclohexanone 10% of the weight of the powder - acetone 10% of the weight of the powder
  • a fragmentable charge according to the invention was made from propellant powder in grains coated with a mixture of dinitropolystyrene (DNPS) and polyvinyl nitrate (NPV) in the presence of 2-nitro diphenylamine (2-NDPA) as stabilizer and using nitrobenzene as solvent.
  • DNPS dinitropolystyrene
  • NPV polyvinyl nitrate
  • Example 7 The procedure was as described in Example 7 with a coating solution whose overall composition was as follows: - DNPS 1% of the weight of the powder - NPV 1% of the weight of the powder - 2-NDPA 0.04% by weight of the powder - nitrobenzene 15% of the weight of the powder
  • Fragmentable blocks were thus obtained having the following characteristics: aspect correct potential 3,460 joules / g or 828 cal / g crush resistance + 21 ° C: 0.49 kN / cm2 + 100 ° C: 0.23 kN / cm2
  • a fragmentable charge according to the invention was made from propellant powder in grains coated with a mixture of dinitropolystyrene (DNPS) and polyvinyl nitrate (NPV) in the presence of 2-nitro diphenylamine (2-NDPA) as stabilizer and using tetramethylurea as a solvent.
  • DNPS dinitropolystyrene
  • NPV polyvinyl nitrate
  • Example 7 The procedure was as described in Example 7 with a coating solution whose overall composition was as follows: - DNPS 1% of the weight of the powder - NPV 1% of the weight of the powder - 2-NDPA 0.04% by weight of the powder - tetramethylurea 15% of the weight of the powder
  • Fragmentable blocks were thus obtained having the following characteristics: aspect correct potential 3,680 joules / g or 880 cal / g crush resistance + 21 ° C: 1.89 kN / cm2 + 100 ° C: 1.04 kN / cm2
  • a fragmentable charge according to the invention was made from propellant powder in grains coated with a mixture of dinitropolystyrene (DNPS) and polyvinyl nitrate (NPV) in the presence of 2-nitro diphenylamine (2-NDPA) as stabilizer and using butyrolactone as solvent.
  • DNPS dinitropolystyrene
  • NPV polyvinyl nitrate
  • Example 7 The procedure was as described in Example 7 with a coating solution whose overall composition was as follows: - DNPS 1% of the weight of the powder - NPV 1% of the weight of the powder - 2-NDPA 0.04% by weight of the powder - butyrolactone 15% of the weight of the powder
  • Fragmentable blocks were thus obtained having the following characteristics: aspect correct potential 3,106 joules / g or 743 cal / g crush resistance + 21 ° C: 0.85 kN / cm2 + 100 ° C: 0.29 kN / cm2
  • a fragmentable charge according to the invention was made from propellant powder in grains coated with a mixture of dinitropolystyrene (DNPS) and polyvinyl nitrate (NPV) in the presence of 2-nitro diphenylamine (2-NDPA) as stabilizer and using tetramethylene sulfone as solvent.
  • DNPS dinitropolystyrene
  • NPV polyvinyl nitrate
  • Example 7 The procedure was as described in Example 7 with a coating solution whose overall composition was as follows: - DNPS 1% of the weight of the powder - NPV 1% of the weight of the powder - acetone 12% of the weight of the powder - tetramethylene sulfone 6% of the weight of the powder - 2-NDPA 0.04% by weight of the powder
  • Fragmentable blocks were thus obtained having the following characteristics: aspect correct potential 3,712 joules / g or 886 cal / g crush resistance + 21 ° C: 1.1 kN / cm2 + 100 ° C: 0.6 kN / cm2
  • a fragmentable charge was made according to the invention using a composite powder, the composition of which was as follows: - hexogen (coated with 2% by weight of dioctyl phthalate) 80 parts by weight - centrality 0.4 parts by weight - nitrocellulose (nitrogen content 11.8%) 4 parts by weight - cellulose acetate butyrate 9.6 parts by weight - ATEC 6 parts by weight
  • ATEC designates triethyl citrate acetate of formula:
  • the potential of this powder was 3,595 joules / g or 860 cal / g.
  • a coating solution whose overall composition was as follows: - polyvinyl nitrate 0.67% of the weight of the powder - polyvinyl acetate 0.67% of the weight of the powder - dinitropolystyrene 0.67% of the weight of the powder - cyclohexanone 10% of the weight of the powder - acetone 10% of the weight of the powder
  • Fragmentable blocks were thus obtained having the following characteristics: aspect correct potential 3,574 joules / g or 855 cal / g crush resistance + 21 ° C: 0.89 kN / cm2 + 100 ° C: 0.59 kN / cm2

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Claims (13)

  1. Verfahren zur Herstellung von zerfallsfähigen Treibladungen für hüllenlose Munition aus körnigem Treibladungspulver,
    dadurch gekennzeichnet, daß
    in einer ersten Stufe die Pulverkörner zunächst einer Ummantelung unterzogen werden, bei der ein Gemisch, das mindestens ein Poly(dinitrostyrol), ein Stabilisierungsmittel und ein unter Polyvinylnitrat und Polyvinylacetat ausgewähltes polyvinylalkoholderivat enthält und in Lösung in einem Lösungsmittelmilieu vorliegt, durch Zerstäuben auf die Pulverkörner aufgebracht wird,
    und, nach Abdampfen des Lösungsmittelmilieus, in einer zweiten Stufe die so erhaltenen Pulverkörner bei einer Temperatur von etwa 100 bis 140 °C verpreßt werden.
  2. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß
    der Gewichtsanteil des Poly(dinitrostyrols), bezogen auf das Gesamtgewicht aus Poly(dinitrostyrol) und dem Polyvinylalkoholderivat, 25 bis 75 % beträgt.
  3. Verfahren nach Anspruch 2,
    dadurch gekennzeichnet, daß
    das Poly(dinitrostyrol) einen Erweichungspunkt von über 260 °C aufweist.
  4. Verfahren nach Anspruch 2,
    dadurch gekennzeichnet, daß
    das Stabilisierungsmittel 2-Nitrodiphenylamin ist.
  5. Verfahren nach Anspruch 2,
    dadurch gekennzeichnet, daß
    ein Teil der Polyvinylalkoholderivate durch Celluloseacetat ersetzt wird.
  6. Verfahren nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, daß
    das Lösungsmittelmilieu mindestens ein Lösungsmittel für Poly(dinitrostyrol) enthält, das unter Cyclohexanon, Tetramethylharnstoff, Nitrobenzol, Butyrolacton und Tetramethylensulfon ausgewählt ist.
  7. Verfahren nach Anspruch 6,
    dadurch gekennzeichnet, daß
    das Lösungsmittel für Poly(dinitrostyrol) mit mindestens einem Hilfslösungsmittel gemischt wird, das ein Lösungsmittel für die Polyvinylalkoholderivate und Celluloseacetat darstellt.
  8. Verfahren nach Anspruch 7,
    dadurch gekennzeichnet, daß
    das Hilfslösungsmittel Aceton ist.
  9. Verfahren nach Anspruch 8,
    dadurch gekennzeichnet, daß
    das Lösungsmittel für Poly(dinitrostyrol) Cyclohexanon ist.
  10. Zerfallsfähige Treibladungen aus körnigem Treibladungspulver,
    dadurch gekennzeichnet, daß
    sie nach dem Verfahren nach einem der Ansprüche 1 bis 9 erhalten sind.
  11. Treibladungen nach Anspruch 10,
    dadurch gekennzeichnet, daß
    das körnige Treibladungspulver ein einbasiges Nitrocellulosepulver ist.
  12. Körniges Treibladungspulver,
    dadurch gekennzeichnet, daß
    die Pulverkörner mit einer Ummantelung aus einem Gemisch überzogen sind, das mindestens ein Poly(dinitrostyrol), ein Stabilisierungsmittel und ein unter Polyvinylnitrat und Polyvinylacetat ausgewähltes Polyvinylalkoholderivat enthält.
  13. Treibladungspulver nach Anspruch 12,
    dadurch gekennzeichnet, daß
    das körnige Treibladungspulver ein einbasiges Nitrocellulosepulver ist.
EP19910400319 1990-02-21 1991-02-11 Verfahren zur Herstellung temperaturbeständiger zerfallsfähiger Treibladungen, entsprechende Treibladungspulver sowie so hergestellte Treibladungen. Expired - Lifetime EP0446085B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002092A FR2658505B1 (fr) 1990-02-21 1990-02-21 Procede de fabrication de chargements propulsifs fragmentables resistant a la temperature, poudres constitutives et chargements ainsi obtenus.
FR9002092 1990-02-21

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Publication Number Publication Date
EP0446085A1 EP0446085A1 (de) 1991-09-11
EP0446085B1 true EP0446085B1 (de) 1995-07-12

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EP (1) EP0446085B1 (de)
DE (1) DE69111097T2 (de)
FR (1) FR2658505B1 (de)

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Publication number Priority date Publication date Assignee Title
EP0633236A1 (de) * 1993-06-30 1995-01-11 Alliant Techsystems Inc. Energetische Beschuhtung für Treibstoffe für Feuerwaffen
DE19907809C2 (de) * 1999-02-24 2002-10-10 Nitrochemie Gmbh Verfahren zur Herstellung von ein-, zwei- oder dreibasigen Triebladungspulvern für Rohrwaffenmunition
FR2899228B1 (fr) * 2006-03-31 2012-01-13 Commissariat Energie Atomique Synthese de composes benzeniques substitues par des groupes nitro et vinyles, 1,3-dinitro-4,6-divinylbenzene et ses applications

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US3655836A (en) * 1968-06-26 1972-04-11 Hercules Inc Process for preparation of molded propellant charges from smokeless powder and nonvolatile binders
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FR2436766A1 (fr) * 1978-09-21 1980-04-18 Poudres & Explosifs Ste Nale Chargements fragmentables de poudre propulsive enrobee de nitrate de polyvinyle et leur procede de fabrication
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FR2587328B1 (fr) * 1985-09-19 1991-06-14 Poudres & Explosifs Ste Nale Chargements propulsifs mixtes resistant a haute temperature

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DE69111097T2 (de) 1996-04-04
EP0446085A1 (de) 1991-09-11
FR2658505B1 (fr) 1992-04-30
FR2658505A1 (fr) 1991-08-23
DE69111097D1 (de) 1995-08-17

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