EP2027080A1

EP2027080A1 - Ignition charge

Info

Publication number: EP2027080A1
Application number: EP07729434A
Authority: EP
Inventors: Ulrich Bley; Rainer Hagel; Aleksej Hoschenko; Peter Simon Lechner; Frank MÖNIUS
Original assignee: RUAG Ammotec GmbH
Current assignee: RWS GmbH
Priority date: 2006-05-23
Filing date: 2007-05-23
Publication date: 2009-02-25
Anticipated expiration: 2027-05-23
Also published as: DK2027080T3; US8409378B2; PL2027080T3; EP2027080B1; WO2007135167A1; BRPI0712015A2; ZA200810380B; RU2454387C2; US20110041968A1; RU2008150590A; CN101448762A; ES2598112T3; BRPI0712015B1; DE102006024511A1

Abstract

The invention relates to a lead- and barium-free ignition charge which does not contain any oxidant and its use.

Description

ignition

The invention relates to a primer and its use.

The combustion residues of lead and barium compounds used in ignition charges, for example lead styphnate as initial explosive and barium peroxide as oxidizing agent, have the disadvantage that they are toxic and ecologically questionable. In addition, the poor tribological properties of the combustion residues of barium peroxide reduce the operability of the weapon or the bolt thruster.

While the lead styphnate could easily be replaced, for example, by diazodinitrophenol or salts of dinitrobenzofuroxanate, the zinc peroxide proposed in EP-AO 031 045 as a substitute for barium peroxide is far less harmful or ecologically harmful, but its combustion residues also have a corrosive and functional inhibiting effect on the materials of the weapon or the bolt thruster.

Object of the present invention is to provide a Anzündsatz that overcomes the disadvantages of the prior art, which is lead and barium free, which has a high reliability and / or its combustion residues do not lead to a malfunction of the weapon or the bolt thruster.

According to the invention, the object is surprisingly achieved by the features of the main claim. Preferred embodiments can be found in the subclaims.

In particular, it has surprisingly been found that the object is achieved by a lead-free and barium-free ignition charge which contains no oxidizing agent, in particular no peroxide. In addition to initial explosive, sensitizer and friction agent, the primer composition according to the invention may optionally contain one or more additives. In particular, the subject matter of the invention is a lead-free and barium-free ignition charge without oxidizing agent, which contains an initial explosive or several initial explosives. To improve the tribological properties of the combustion residues, this primer may contain boron and / or boron derivatives. The ignition charge can be used, for example, in cartridges with edge firing or cartridges for industrial purposes, again, for example, for bolt thrusters or cattle stunning.

Oxidizing agents in the context of the invention are understood to be substances whose oxygen balance is positive. Examples of such substances are the nitrates of the alkali and / or alkaline earth metals and / or ammonium, the perchlorates of the alkali and / or alkaline earth metals and / or ammonium, the peroxides of the alkaline earth metals and / or zinc or mixtures of two or more of these substances.

According to the invention, preference is given to an ignition charge which, in addition to the initial explosive, sensitizer and friction agent and optionally one or more additives, additionally contains a boron component, for example boron and / or boron derivatives such as boron nitride and / or zirconium boride. Such an ignition charge ensures high reliability and a long service life of the mechanically loaded parts of the weapon or the bolt thruster. The reason for this is above all the formation of metal boron oxides, in particular when using potassium dinitrobenzofuroxanate of potassium borate, which has a positive effect on the tribological properties of the combustion residues. The boron nitride also acts as a lubricant in the combustion residues.

The use of boron or boron derivatives in igniter charges is known per se, for example from WO-A-0140144. However, boron or boron derivatives are always used in conjunction with oxidizing agents in the prior art and serve as reducing agents relative to these oxidizing agents. The boron or boron derivatives therefore do not contribute in these igniter compositions to improve the tribological properties of the combustion residues. It is particularly preferred according to the invention for the boron component to be used as a builder of metal boron oxides in a stoichiometric amount, based on the formation of alkali and / or alkaline-earth borates in the combustion residues.

In a further preferred embodiment according to the invention, the primer composition contains, in addition to initial explosive, sensitizer and friction agent and optionally one or more additives, a boron component, for example boron and / or boron derivatives such as boron nitride and / or zirconium boride, one or more substances which are used to improve and

Characterization of the smell are suitable and survive the thermal stress during the shot. An example of such a scent is vanillin.

As initial explosive can be used according to the invention (individually or in mixtures):

Diazodinitrophenol, salts of dinitrobenzofuroxan especially potassium dinitrobenzofuroxanate, 1- (2,4,6-trinitrophenyl) -5- (1- (2,4,6-trinitrophenyl) -1H-tetrazol-5-yl) -1 H- tetrazole (short: pikrazole).

As a sensitizer can be used according to the invention (individually or in

Blends):

Tetracene, diazodinitrophenol.

As friction agents can be used according to the invention (individually or in mixtures):

Glass beads, glass beads, glass powder, calcium silicide, coke powder.

As additives can be used according to the invention:

1 . Reducing agents (individually or in mixtures):

Aluminum, titanium, titanium hydride, zirconium, zirconium hydride, silicon, graphite, activated carbon, carbon black. - A -

2. Auxiliary substances (individually or in mixtures):

Nitrocellulose ball powder, silicates, silica gels, preferably nitrocellulose ball powder.

3. Binders (individually or in mixtures):

Adhesin, cellulose and their derivatives, polyvinyl butyrals, Polynitropolyphenylen, Polynitrophenylether, Plexigum, gum arabic, dextrins, polyvinyl acetate and

Copolymers, preferably adhesin.

4. Secondary explosives (singly or in mixtures): hexogen, octogen and nitropenta.

The preparation of the ignition compositions according to the invention is carried out according to methods known from the prior art, for example by kneading the water-moist mixture or sieving the dry mixture. The dosing of the water-moist mass is also carried out according to methods known from the prior art, for example by brushing the perforated plates, by dispensing or by extrusion.

The subject of the invention is in detail:

- an ignition charge which is lead and barium free;

- a primer which is free of peroxides;

- An ignition charge that is free of oxidants;

an ignition charge containing one or more initial explosives, one or more sensitisers and / or one or more friction agents;

an ignition charge containing at least one initial explosive, a sensitizer and a friction agent; - An ignition charge, in addition to Initialexplosivstoff, sensitizer and friction agent additionally contains a Borkomponente, preferably boron and / or boron derivatives such as boron nitride and / or zirconium chloride;

- an ignition charge containing, in addition to initial explosive, sensitizer and friction agent, one or more additives;

- An ignition charge, in addition to Initialexplosivstoff, sensitizer, friction agent and one or more additives additionally contains a boron component, preferably boron and / or boron derivatives such as boron nitride and / or zirconium boride;

- a priming charge, the initial explosive being one or more of the following: diazodinitrophenol, salts of dinitrobenzofuroxan, in particular potassium dinitrobenzofuroxanate, 1- (2,4,6-trinitrophenyl) -5- (1- (2,4,6-) trinitrophenyl) -1H-tetrazol-5-yl) -1H-tetrazole (pikrazole for short);

- An ignition charge, wherein the proportion of Initialexplosivstoffes in the finished ignition charge 30 to 70 wt .-%, preferably 35 to 65 wt .-%, particularly preferably 38 to 58 wt .-% is.

- a primer, wherein the sensitizer is one or more of the following: tetracene, diazodinitrophenol, preferably tetrazene;

- An ignition charge, wherein the proportion of the sensitizer in the finished ignition charge 1 to 12 wt .-%, preferably 2 to 10 wt .-% is.

- a primer composition, the frictional agent being one or more of the following: glass beads, glass beads, glass powder, calcium silicide, coke powder;

- An ignition charge, wherein the proportion of the friction agent in the finished ignition charge 10 to 40 wt .-%, preferably 20 to 35 wt .-%, particularly preferably 20 to 32 wt .-% is; - An ignition charge, wherein the proportion of Borkomponente 0.01 to 5 wt .-%, preferably 0.05 to 3 wt .-%, particularly preferably 0.1 to 2.5% by weight;

- An ignition charge, wherein the boron component in a stoichiometric amount, based on the formation of alkali and / or Erdalkaliboraten in the combustion residues, is used;

- An ignition charge, wherein as additives one or more reducing agents, one or more auxiliaries, one or more binders, one or more secondary explosives and / or one or more odorous substances or mixtures of two or more of these substances can be used;

- An ignition charge, wherein as a reducing agent aluminum, titanium, titanium hydride, zirconium, zirconium hydride, silicon, graphite, activated carbon, carbon black or mixtures of two or more of these substances can be used;

- An ignition charge, wherein the proportion of the reducing agent in the finished ignition charge 0 to 20 wt .-%, preferably 1 to 19 wt .-%, particularly preferably 5 to 15 wt .-% is;

- An ignition charge, wherein as excipient nitrocellulose ball powder, silicates, silica gels, preferably nitrocellulose ball powder, or mixtures of two or more of these substances can be used;

- An ignition charge, wherein the proportion of the excipient in the finished ignition charge 2 to 45 wt .-%, preferably 5 to 40 wt .-%, particularly preferably 9 to 36 wt .-% is;

- An ignition charge, which can be used as a binder adhesin, cellulose and derivatives thereof, polyvinyl butyrals, Polynitropolyphenylen, Polynitrophenylether, Plexigum, gum arabic, dextrins, polyvinyl acetate or copolymers, preferably adhesin, or mixtures of two or more of these substances; - An ignition charge, wherein the proportion of the binder in the finished ignition charge from 0.2 to 5 wt .-%, preferably 0.5 to 3 wt .-% is;

- An ignition charge, which can be used as a secondary explosive Hexogen, octogen, Nitropenta or mixtures of two or more of these substances;

- An ignition charge, wherein the proportion of the secondary explosive in the finished ignition charge 0 to 20 wt .-%, preferably 1 to 19 wt .-%, particularly preferably 5 to 15 wt .-% is;

an ignition charge containing an odorant, preferably vanillin;

- An ignition charge, wherein the proportion of the odorant in the finished ignition charge 0 to 10 wt .-%, preferably 0.1 to 9 wt .-%, particularly preferably 1 to 5 wt .-% is;

- Use of the primer composition according to the invention in cartridges with edge fire ignition;

Use of the primer composition according to the invention in cartridges with rimfire ignition, preferably for industrial purposes, particularly preferably for bolt thrust devices or for cattle stunning.

The invention will be explained in more detail below by several embodiments, without limiting it thereto; all figures in percent (%) are to be understood as weight percentages (% by weight):

Example 1: Primer 1

Diazodinitrophenol 44.0%

Potassium dinitrobenzofuroxanate 10.0%

Tetracene 3.0%

Glass beads 32.0%

Nitrocellulose ball powder 9.7%

Adhesin 1.0%

Boron 0.2%

Boron nitride 0.1%

Example 2: Priming 2

Diazodinitrophenol 43.0%

Picrazole 10.0%

Tetracene 4.0%

Glass powder 32.0%

Nitrocellulose ball powder 9.7%

Adhesin 1.0%

Boron nitride 0.3%

Example 3: Ignition 3

Diazodinitrophenol 50.0%

Tetracene 8.0%

Glass powder 30.0%

Nitrocellulose ball powder 9.0%

Adhesin 2.0%

Calcium silicide 1.0% Example 4: Ignition 4:

Diazodinitrophenol 35.0%

Potassium dinitrobenzofuroxanate 10.0%

Tetracene 8.0%

Glass powder 30.0%

Nitrocellulose ball powder 15.0%

Adhesin 2.0%

Example 5: Ignition Rate 5:

Diazodinitrophenol 31, 0%

Potassium dinitrobenzofuroxanate 7.3%

Tetracene 2.1%

Glass powder 22.8%

Nitrocellulose ball powder 35.6%

Adhesin 0.9%

Boron 0.2%

Boron nitride 0.1%

Example 6: Ignition Rate 6:

Potassium dinitrobenzofuroxanate 44.0%

Tetracene 9.0%

Glass powder 20.0%

Nitrocellulose ball powder 22.0%

Adhesin 2.9%

Boron 2.0%

Boron nitride 0.1% AIIe priming in the examples were prepared water-moist by kneading and introduced via perforated plates in cartridges for bolt shovels (caliber 6.8 x 1 1) water-damp. Subsequently, the primer was thrown into the edge.

To evaluate the example mixtures, cartridges for bolt thrusters were manufactured and compared with commercially available cartridges with lead-containing igniter sets in terms of Zündernpfindlichkeit, Eintreibleist and pollution of the bolt thruster. Bolt pushing devices made by Hilti Type DX A40 and DX 36 were used.

The results are shown in Table 1.

Table 1 :

The results show that the function of the ignition charges is reliably guaranteed even without an oxidizing agent. The results also show that even the absence of the oxidizing agent causes less contamination of the bolt thruster, without the functionality of the bolt thruster is reduced. In particular, the results show that in the presence of boron and / or boron nitride, the contamination in the bolt thruster is significantly lower, without the functionality of the bolt thruster is reduced.

Claims

claims

1 . Lead-free and barium-free primer composition, characterized in that it is free of peroxides and contains one or more initial explosives, one or more sensitisers and / or one or more friction agents.

2. Lead and barium-free primer composition according to claim 1, characterized in that it is free of peroxides and contains at least one initial explosive, a sensitizer and a friction agent.

3. primer according to claim 1 or 2, characterized in that it is free of oxidizing agents.

4. primer according to at least one of claims 1 to 3, characterized in that it is the initial explosive diazodinitrophenol, salts of Dinitrobenzofuroxans particular Kaliumdinitrobenzofuroxanat, 1 - (2,4,6-trinitrophenyl) -5- (1 - (2.4 , 6-trinitrophenyl) -1H-tetrazol-5-yl) -1H-tetrazole or

Mixtures of these substances is.

5. primer according to at least one of claims 1 to 4, characterized in that the proportion of Initialexplosivstoffes in the finished ignition charge 30 to 70 wt .-%, preferably 35 to 65 wt .-%, particularly preferably 38 to 58 wt .-% is ,

6. primer according to at least one of claims 1 to 5, characterized in that it is the sensitizer to tetracene, diazodinitrophenol, preferably tetrazene or mixtures of these substances.

7. primer according to at least one of claims 1 to 6, characterized in that the proportion of the sensitizer in the finished primer 1 to 12 wt .-%, preferably 2 to 10 wt .-% is.

8. primer according to at least one of claims 1 to 7, characterized in that it is the friction agent to one or more of the following substances: glass beads, glass beads, glass powder, calcium silicide, coke powder.

9. primer according to at least one of claims 1 to 8, characterized in that the proportion of the friction agent in the finished primer 10 to 40 wt .-%, preferably 20 to 35 wt .-%, particularly preferably 20 to 32 wt .-% is ,

10. Primer composition according to at least one of claims 1 to 9, characterized in that it contains a boron component, preferably boron and / or boron derivatives, preferably boron nitride and / or zirconium boride.

1 1. Primer composition according to at least one of claims 1 to 10, characterized in that the proportion of Borkomponente 0.01 to 5 wt .-%, preferably 0.05 to 3 wt .-%, particularly preferably 0.1 to 2.5 wt. -% is.

12. primer according to at least one of claims 1 to 1 1, characterized in that the boron component, based on the formation of alkali and / or Erdalkaliboraten in the combustion residues, is used in a stoichiometric amount.

13. primer according to at least one of claims 1 to 12, characterized in that it contains one or more additives.

14. primer according to at least one of claims 1 to 13, characterized in that as additives one or more reducing agents, one or more auxiliaries, one or more binders, one or more secondary explosives and / or one or more odorous substances or mixtures of two or more these substances are used.

15. Ignition charge according to at least one of claims 1 to 14, characterized in that are used as the reducing agent aluminum, titanium, titanium hydride, zirconium, zirconium hydride, silicon, graphite, activated carbon, carbon black or mixtures of two or more of these substances.

16. primer according to at least one of claims 1 to 15, characterized in that the proportion of the reducing agent in the finished ignition charge 0 to 20 wt .-%, preferably 1 to 19 wt .-%, particularly preferably 5 to 15 wt .-% is ,

17. primer according to at least one of claims 1 to 16, characterized in that are used as excipient nitrocellulose ball powder, silicates, silica gels, preferably nitrocellulose ball powder, or mixtures of two or more of these substances.

18. primer according to at least one of claims 1 to 17, characterized in that the proportion of the excipient in the finished primer 2 to 45 wt .-%, preferably 5 to 40 wt .-%, particularly preferably 9 to 36 wt .-% is ,

19. primer according to at least one of claims 1 to 18, characterized in that as binder adhesin, cellulose and their derivatives, polyvinyl butyrals, Polynitropolyphenylen, Polynitrophenylether, Plexigum, gum arabic, dextrins, polyvinyl acetate or copolymers, preferably adhesin, or mixtures of two or several of these substances are used.

20. primer according to at least one of claims 1 to 19, characterized in that the proportion of the binder in the finished primer 0.2 to 5 wt .-%, preferably 0.5 to 3 wt .-% is.

21. Ignition charge according to at least one of claims 1 to 20, characterized in that as secondary explosive Hexogen, octogen, Nitropenta or

Mixtures of two or more of these substances are used.

22. primer according to at least one of claims 1 to 21, characterized in that the proportion of the secondary explosive in the finished ignition charge 0 to 20 wt .-%, preferably 1 to 19 wt .-%, particularly preferably 5 to 15 wt .-% is ,

23. primer according to at least one of claims 1 to 22, characterized in that it contains an odorant, preferably vanillin.

24. primer according to at least one of claims 1 to 23, characterized in that the proportion of the odorant in the finished ignition charge 0 to 10, preferably 0.1 to 9, particularly preferably 1 to 5 wt .-% is.

25. Use of the primer according to one or more of claims 1 to 24 in cartridges with edge fire ignition.

26. Use of the primer according to one or more of claims 1 to 24 in cartridges with edge fire ignition, preferably for industrial purposes, particularly preferably for pin thrust devices or cattle stunning.