EP0002466B1 - Procédé pour améliorer la dépendance vis à vis de la pression de la combustion de propergols en pain ou pour armes à feu et leur application comme composants de propergols en pain ou pour armes à feu - Google Patents

Procédé pour améliorer la dépendance vis à vis de la pression de la combustion de propergols en pain ou pour armes à feu et leur application comme composants de propergols en pain ou pour armes à feu Download PDF

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Publication number
EP0002466B1
EP0002466B1 EP78101480A EP78101480A EP0002466B1 EP 0002466 B1 EP0002466 B1 EP 0002466B1 EP 78101480 A EP78101480 A EP 78101480A EP 78101480 A EP78101480 A EP 78101480A EP 0002466 B1 EP0002466 B1 EP 0002466B1
Authority
EP
European Patent Office
Prior art keywords
solid
propellants
firearms
grains
components
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
EP78101480A
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German (de)
English (en)
Other versions
EP0002466A2 (fr
EP0002466A3 (en
Inventor
Achim Dr. Pfeil
Walter Dr. Engel
Norbert Dipl.-Phys. Eisenreich
Klaus-Martin Dr. Bucerius
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Publication of EP0002466A2 publication Critical patent/EP0002466A2/fr
Publication of EP0002466A3 publication Critical patent/EP0002466A3/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • 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
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0008—Compounding the ingredient
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • 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
    • C06B45/20—Compositions or products which are defined by structure or arrangement of component of product comprising a coated component the component base containing an organic explosive or an organic thermic component

Definitions

  • the invention relates to a method according to the preamble of claim 1, wherein burn-off modifiers are to be used more effectively than corresponds to the current state of the art, and the use of these as a burn-off rate regulating component of gas-generating systems, in particular for solid fuels (AGVs) and pyrotechnic compositions.
  • FTS components can be solid monomeric or polymeric nitro or nitrate compounds, e.g. Polyvinyl nitrate or preferably nitrocellulose (NC).
  • NC is a key ingredient in many rocket propellants, gun propellants, gas generator propellants and pyrotechnic propellants.
  • double-based solid fuels DB-FTS
  • nitroglycerin plasticizers and stabilizers are further components.
  • composite double-base solid fuels CDB-FTS
  • CDB-FTS also contain binder components such as Polyurethanes or Poybutadienes and inorganic or organic oxidizers such as e.g. Ammonium perchlorate or hexogen.
  • CDB-FTS NC is often incorporated in the form of fluid balls or basegrain powder. Gas generators, gun propellants and pyrotechnic kits often have analog compositions.
  • Fluid balls are spherical granules of small grain size and “base grain powder” is a cylindrical granulate.
  • the burning rate of such systems increases monotonously with increasing pressure.
  • the reduction (plateau effect) or the interruption (mesa effect) of this monotonous increase is desirable for internal ballistic and security reasons.
  • a plateau or mesa effect can be achieved by using burn-up modifiers with a weight fraction of up to about 5%. So far, this has been achieved for DB-AGVs and systems of corresponding composition by kneading the components including burn-off modifiers and processing them into fuels using the known processes; however, this can only be achieved with complex processes, which cannot guarantee the required reproducibility.
  • the invention has for its object to find a method which ensures an even more effective modification of nitrocellulose-containing solid fuels and similar systems while at the same time achieving the necessary reproducibility.
  • the blowing agent on which the metals or metal compounds are deposited is not in the form of an agglomerate.
  • Various chemical compounds containing the burn-modifying metal can be used to generate precipitation. If one has the choice, the chemical compound which has the smaller solubility product is generally preferred because experience has shown that this can increase the fine particle size of the precipitate; like this e.g. is well known in the precipitation of barium as barium sulfate, although it is undesirable for analytical purposes.
  • burn-regulating metals can also be deposited on the polymeric, nitrogen-containing components. From colloidal solutions of fire-regulating metals, e.g. Copper or tin, the corresponding metals can be deposited in elementary amounts on the nitro or nitrate components according to the claimed process.
  • Another way of increasing the fineness of the burn-up modifiers is to select compounds of the burn-off-modifying metal whose peculiarity is to form particularly voluminous precipitates. This voluminous low Thanks to their large volume, blows are very suitable for an even and fine distribution on the fiber.
  • this compound is deposited in statu nascendi as fine as possible under suitable precipitation conditions.
  • Another variant of the method of distributing the burnup modifiers in the finest possible form on NC or other AGVS components is the possibility of physical precipitation.
  • This is the method of choice in the case of combustion modifier compounds which are readily soluble in water or other common solvents.
  • the AGV component, on which the burn-up modifier compounds are to be deposited is dispersed in undissolved state in water or another medium with low heat of vaporization by vigorous stirring and the burn-off modifier compound is dissolved therein.
  • the fine-particle precipitation of the burnup modifier on the AGV component is then achieved by causing the solvent to evaporate or evaporate, if appropriate under vacuum.
  • a further process variant would be to achieve a finely divided precipitation of the burnup modifiers by precipitation from colloidal solutions or emulsions of the modifiers.
  • hexogen, octogen, polynitroethylene, polyvinyl nitrate, etc. can be used as other monomeric or polymeric nitro or nitrate compounds.
  • Whether one and the same substance has a fuel or explosive property depends primarily on the type of ignition.
  • the best-known example in this context is a nitroglycerin-nitrocellulose mixture which, when lit, behaves like a double-base solid fuel or, ignited with a detonator, behaves like explosive gelatin. Nitropenta would be another example.
  • the modifier in the form of copper (I) and copper (II) sulfide is precipitated colloidally by introducing hydrogen sulfide from a neutral aqueous solution of 240 g of copper (II) acetate hydrate.
  • the colloidally dissolved copper sulfides are deposited in the finest possible form on the NC by boiling.
  • Example 1 Except that the precipitation of finely divided basic copper acetates on NC by evaporating the solvent water under vacuum at temperatures up to 50 ° C from a solution of 55 g of copper (11) acetate hydrate in 6 l of distilled water, with of which the 1,200 g nitrocellulose had been moistened uniformly.
  • DB-FTS which were produced with NC treated according to the invention, clearly showed the intended effect of a modified dependence of the burning rate on pressure to an extent that could not be achieved with the conventional addition of finely ground modifier salts.
  • finely ground modifier salts of the same percentage were incorporated in a convergent manner by kneading and rolling.

Claims (3)

1. Procédé pour l'amélioration de la dépendance par rapport à la pression du comportement à la combustion des carburants solides ou des carburants pour armes tubulaires, qui contiennent de la nitrocellulose ou d'autres composés solides, monomères ou polymères, comportant des groupes nitro- ou nitrates, ainsi que des stabilisants et d'autres additifs, ainsi que des métaux ou des composés métalliques en tant que constituants exerçant une influence sur la combustion, lequel procédé est caractérisé en ce que le carburant est réparti d'une manière homogène dans un liquide, puis en ce que les métaux ou les composés métalliques sont déposés par précipitation chimique ou physique sur la nitrocellulose ou les autres composés solides, monomères ou polymères, et comportant des groupes nitroou nitrates, et en ce que le traitement ultérieur est ensuite poursuivi.
2. Utilisation des constituants des carburants solides ou des carburants pour armes tubulaires produits par le procédé suivant la Revendication 1, pour la fabrication d'un granulat de nitrocellulose comportant une structure unique ou une double structure, de forme sphérique et présentant une faible granulométrie (billes fluides) ou se présentant sous la forme d'une poudre à base de grains.
3. Utilisation des constituants de carburants solides ou de carburants pour armes tubulaires, obtenus par le procédé suivant la Revendication 1, dans des fusées, des carburants solides, des carburants pour armes tubulaires, des carburants générateurs de gaz ou des compositions pyrotechniques.
EP78101480A 1977-12-09 1978-11-30 Procédé pour améliorer la dépendance vis à vis de la pression de la combustion de propergols en pain ou pour armes à feu et leur application comme composants de propergols en pain ou pour armes à feu Expired EP0002466B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2754855 1977-12-09
DE2754855A DE2754855C2 (de) 1977-12-09 1977-12-09 Verfahren zur Verbesserung der Druckabhängigkeit des Abbrandverhaltens von Festtreiboder Rohrwaffentreibmittel und Verwendung der nach dem Verfahren hergestellten Treibmittel

Publications (3)

Publication Number Publication Date
EP0002466A2 EP0002466A2 (fr) 1979-06-27
EP0002466A3 EP0002466A3 (en) 1979-08-08
EP0002466B1 true EP0002466B1 (fr) 1981-06-17

Family

ID=6025687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101480A Expired EP0002466B1 (fr) 1977-12-09 1978-11-30 Procédé pour améliorer la dépendance vis à vis de la pression de la combustion de propergols en pain ou pour armes à feu et leur application comme composants de propergols en pain ou pour armes à feu

Country Status (2)

Country Link
EP (1) EP0002466B1 (fr)
DE (2) DE2754855C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608102A (en) * 1984-11-14 1986-08-26 Omark Industries, Inc. Primer composition
DE3809177C1 (fr) * 1988-03-18 1989-06-22 Buck Chemisch-Technische Werke Gmbh & Co, 7347 Bad Ueberkingen, De
RU2451650C1 (ru) * 2010-12-20 2012-05-27 Федеральное государственное унитарное предприятие "Научно-исследовательский институт полимерных материалов" Способ модификации октогена
RU2471757C1 (ru) * 2011-09-16 2013-01-10 Открытое акционерное общество "Научно-исследовательский институт полимерных материалов" Способ модификации октогена
RU2471758C1 (ru) * 2011-12-14 2013-01-10 Открытое акционерное общество "Научно-исследовательский институт полимерных материалов" Способ модификации октогена

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009796A (en) * 1951-03-08 1961-11-21 Ralph F Preckel Gas-producing compositions of smokeless powder and metal compound inhibitors
US3140659A (en) * 1962-04-23 1964-07-14 Earl F Van Artsdalen Metal-coated propellant granules
US3282737A (en) * 1962-08-27 1966-11-01 Electric Storage Battery Co Electrodes and electrode material
FR1479246A (fr) * 1965-09-21 1967-05-05 France Ministre Des Armees Nouvelle poudre pour cartouches lance-grenade
US3860462A (en) * 1970-02-09 1975-01-14 Us Army Propellant composition of the nitrocellulose type containing non lead-containing ballistic modifiers
FR2275424A1 (fr) * 1974-06-18 1976-01-16 Poudres & Explosifs Ste Nale Perfectionnement au lissage des poudres poreuses a la nitrocellulose

Also Published As

Publication number Publication date
EP0002466A2 (fr) 1979-06-27
DE2860795D1 (en) 1981-09-24
DE2754855A1 (de) 1979-06-13
EP0002466A3 (en) 1979-08-08
DE2754855B1 (de) 1979-10-11
DE2754855C2 (de) 1980-09-04

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