EP1044180A1 - Treibmittel - Google Patents
TreibmittelInfo
- Publication number
- EP1044180A1 EP1044180A1 EP99903602A EP99903602A EP1044180A1 EP 1044180 A1 EP1044180 A1 EP 1044180A1 EP 99903602 A EP99903602 A EP 99903602A EP 99903602 A EP99903602 A EP 99903602A EP 1044180 A1 EP1044180 A1 EP 1044180A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blowing agent
- propellant
- agent according
- proportion
- nitramine
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B25/00—Compositions containing a nitrated organic compound
- C06B25/34—Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
Definitions
- the present invention relates to a blowing agent which is stable at high temperatures.
- Propellant bodies the blowing agents from the group of nitrate esters z. B. contain nitrocellulose (NC) are thermally unstable.
- they In order to be able to use them as blowing agents, however, they must be phlegmatized. This is the only way to ensure controlled combustion. Without phlegmatization, they would be capable of detonation and would react like an explosive in the weapon.
- every blowing agent must have a precisely coordinated gas production rate for the respective application.
- the known propellant charge powders based on a nitrocellulose matrix are varied in geometry and thus in the surface of the erosion.
- the burning rate of the material itself can only be varied within a limited range.
- the geometry must be kept constant, for example in the case of sleeveless telescopic cartridges, for ignition transmitters, for combustible ones
- nitramine / binder combinations used include The following disadvantages: They are characterized by extremely poor sensitivity to ignition. The proportion of explosives cannot be increased by more than 86%, otherwise the detonable properties will predominate. If you drop significantly below this value, the performance of the blowing agent decreases rapidly. However, the required performance may be can no longer be guaranteed. In order to control the burning rate and the sensitivity to ignition, the proportion of binder or unphlegmatized explosive has so far been varied. For example, if the burn-up speed has to be reduced for technical reasons, this is done by increasing the proportion of inert. However, a reduction in the sensitivity to ignition must be accepted. The energy balance of the blowing agent has also deteriorated.
- the object of the present invention was to provide a blowing agent which does not have the disadvantages of the blowing agents known from the prior art.
- Embodiments are preferably characterized in the subclaims.
- the solution according to the invention provides to provide a blowing agent in which the burning rate can be varied within a very wide range (ratio 10: 1) without changing the proportion of binder or the porosity.
- the blowing agent according to the invention is thermally more stable, has a largely variable burning rate and has a sufficiently high sensitivity to ignition.
- nitro compounds which can be used according to the invention are guanidine, triazole or tetrazole derivatives, preferably nitroguanidine and guanidine nitrate or mixtures thereof, particularly preferably nitroguanidine.
- the burning rate of the blowing agent known per se consisting of nitramines with desensitizing binders, is reduced by adding the nitro compounds provided according to the invention, without significantly worsening the energy balance.
- nitro compounds according to the invention from the group of guanidine, triazole and / or tetrazole derivatives are extremely thermally stable, have very little vivacity and are much less explosive than the other explosives belonging to the group of nitramines.
- the solution according to the invention provides to add the nitro compounds provided according to the invention to the blowing agents known per se from nitramine binder mixtures.
- the proportion to be mixed can be up to 90% by weight, preferably 5 to 90% by weight, particularly preferably 15 to 85% by weight.
- the proportion of nitro compounds that can be used according to the invention is varied. In certain cases it is also possible to use compositions which consist exclusively of the nitro compounds and binders provided according to the invention.
- any desired burning rate can be set, since the nitro compounds provided according to the invention themselves have a low burning rate due to the low energy balance compared to the other nitramines.
- the nitro compounds provided according to the invention have a positive partial heat of explosion and thus hardly deteriorate the energy balance of the overall composition.
- the nitro compounds according to the invention do not themselves have to be phlegmatized due to their low risk of explosion, they improve the sensitivity to ignition of the overall composition.
- the addition of the nitro compounds provided according to the invention serves as a binder additive.
- the proportion of binder in a known propellant based on nitramines can consequently be reduced.
- a binder content of 5 to 9% is generally sufficient in the blowing agents composed according to the invention.
- the proportion of binder can be further reduced by suitable binders.
- Adequate strength of the blowing agent is crucial. This significantly improves the burning properties.
- the poor oxygen balance that is usually associated with the use of inert binders is brought to a level that is common with classic NC blowing agents (approx. -40%).
- the negative oxygen balance is more favorable without the need to use additional combustion moderators or oxygen suppliers such as perchlorates.
- the nitro compounds provided according to the invention reduce the sensitivity to detonation, friction and impact of the overall composition.
- the low explosion heat inherent in the nitro compounds provided according to the invention can be compensated for in tube weapons by a high loading density.
- a loading density of between 1.2 and 1.5 g / cm 3 can be provided.
- the explosion temperature of the overall composition is also reduced by the nitro compounds provided according to the invention, which has a favorable effect on pipe erosion.
- the blowing agents according to the invention can be processed to form propellant bodies which are suitable for various purposes. Because of the great variability in the rate of combustion, the propellant charge bodies produced from the propellant according to the invention can be adjusted in an outstanding manner to the required gas production rate. A property that is severely restricted in the known blowing agents. With classic NC-bound blowing agents, the gas production rate is almost exclusively determined by the geometry controlled (propellant powder: (TLP) wall thickness). With the known nitramine-binder combinations, depending on the type of binder, different gas production rates are obtained, but these can only be varied in a small range. Given the geometry of the TLP body, the range of use of the known propellants is thus narrowly limited.
- the blowing agent according to the invention can be pressed into propellant charge bodies in a manner known per se.
- a propellant charge body which burns radially from the inside to the outside after being ignited by a booster charge can preferably be constructed in such a way that the inner layer burns much more slowly than the outer layer. This can be achieved by a layered structure when pressing the propellant charge body or by using a combustible sleeve that burns faster than the propellant charge body itself.
- This so-called heterogeneous structure ensures that the gas supply rate is low at the beginning and is increased with increasing burn-up when the cargo space volume has increased due to the projectile movement. The result is an increase in cartridge performance, an increase in progressiveness.
- FIG. 1 shows the influence of the addition of nitroguanidine on the burning rate of a propellant charge body consisting of hexogen coated with 15% polymethyl methacrylate (PMMA).
- PMMA acts as a binder.
- Other binders known per se, for example peroxidically crosslinked polymers, polybutadienes, two-component resins, mixtures of such binders can also be used if sufficient mechanical strength can be achieved with them and as long as they are compatible with the explosives.
- the propellants according to the invention can be used in cartridges, igniter elements, propellant charges or in other propellant bodies.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Air Bags (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19800106 | 1998-01-05 | ||
DE19800106 | 1998-01-05 | ||
PCT/EP1999/000012 WO1999035108A1 (de) | 1998-01-05 | 1999-01-05 | Treibmittel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1044180A1 true EP1044180A1 (de) | 2000-10-18 |
EP1044180B1 EP1044180B1 (de) | 2018-04-11 |
Family
ID=7853980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99903602.3A Expired - Lifetime EP1044180B1 (de) | 1998-01-05 | 1999-01-05 | Verwendung von Nitroverbindungen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1044180B1 (de) |
DE (1) | DE19900110A1 (de) |
WO (1) | WO1999035108A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19907809C2 (de) * | 1999-02-24 | 2002-10-10 | Nitrochemie Gmbh | Verfahren zur Herstellung von ein-, zwei- oder dreibasigen Triebladungspulvern für Rohrwaffenmunition |
KR20010111143A (ko) * | 2000-06-08 | 2001-12-17 | 이계안 | 차량의 아이들 제어장치 및 방법 |
WO2014155061A1 (en) | 2013-03-27 | 2014-10-02 | Bae Systems Plc | Non-phthalate propellants |
EP3838877A1 (de) * | 2013-03-27 | 2021-06-23 | BAE SYSTEMS plc | Unempfindliche munitionstreibmittel |
EP2784054A1 (de) * | 2013-03-27 | 2014-10-01 | BAE SYSTEMS plc | Unempfindliche Munitionstreibmittel |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE884170C (de) * | 1946-11-08 | 1953-07-23 | Ici Ltd | Gaserzeugende Ladung |
US3002459A (en) * | 1955-11-09 | 1961-10-03 | Ici Ltd | Propellant charges |
DE1093717B (de) * | 1958-11-07 | 1960-11-24 | Dynamit Nobel Ag | Verfahren zur Herstellung von geformten Raketentreibsaetzen hoher Festigkeit aus Cyclotrimethylentrinitramin |
GB1302361A (de) * | 1960-05-11 | 1973-01-10 | ||
US3909322A (en) * | 1970-08-03 | 1975-09-30 | Us Navy | Solid gas generating and gun propellant compositions containing a nitroaminotetrazole salt |
US4092188A (en) * | 1977-05-16 | 1978-05-30 | Lovelace Alan M Acting Adminis | Nitramine propellants |
FR2584066B1 (fr) * | 1985-06-28 | 1987-08-07 | Poudres & Explosifs Ste Nale | Utilisation du 5-oxo 3-nitro, 1,2,4-triazole comme substance explosive et compositions pyrotechniques contenant du 5-oxo 3-nitro 1,2,4-triazole. |
DE3744680C2 (de) * | 1986-07-04 | 1996-10-02 | Royal Ordnance Plc | Energiereiche Materialien sowie deren Verwendung |
GB2265896B (en) * | 1990-07-02 | 1994-07-20 | Secr Defence | Extrudable gun propellant composition |
DE4126981C1 (de) * | 1991-08-15 | 1993-01-28 | Dynamit Nobel Ag, 5210 Troisdorf, De |
-
1999
- 1999-01-05 DE DE19900110A patent/DE19900110A1/de not_active Ceased
- 1999-01-05 EP EP99903602.3A patent/EP1044180B1/de not_active Expired - Lifetime
- 1999-01-05 WO PCT/EP1999/000012 patent/WO1999035108A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO9935108A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1999035108A1 (de) | 1999-07-15 |
DE19900110A1 (de) | 1999-07-08 |
EP1044180B1 (de) | 2018-04-11 |
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