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 PDFInfo
- 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
Links
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.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Air Bags (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
DE2754855 | 1977-12-09 |
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)
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)
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 |
-
1977
- 1977-12-09 DE DE2754855A patent/DE2754855C2/de not_active Expired
-
1978
- 1978-11-30 EP EP78101480A patent/EP0002466B1/fr not_active Expired
- 1978-11-30 DE DE7878101480T patent/DE2860795D1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0002466A2 (fr) | 1979-06-27 |
DE2860795D1 (en) | 1981-09-24 |
DE2754855B1 (de) | 1979-10-11 |
DE2754855A1 (de) | 1979-06-13 |
DE2754855C2 (de) | 1980-09-04 |
EP0002466A3 (en) | 1979-08-08 |
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