Burned-out propellant loading cylinder

Abstract

An ignition propellant loading cylinder for ammunition that can be fired from an armored gun barrel, comprising pulp, nitrocellulose, MO3 particles (where M = Mo and / or W), and a cationic surfactant, where the average particle size d 50 of the MO3 particles is 0.5 to 2.0 μm, and the maximum particle size d 100 of the MO3 particles is ≦ 20 μm, and the average MO3 concentration (c 3 )(wt%) in a volume element of about 0.05 to 1.0 cm VE at any location in the propellant loading cylinder and the total MO3 concentration (c total )(wt%) in the propellant loading cylinder, the quotient c VE :c total is 0.80 to 1.20, an ignition propellant loading cylinder is provided.

Description

Technical Field

[0001] The present invention relates to a burnout propellant cartridge containing MoO3 and / or WO3 particles, a method for manufacturing the burnout propellant cartridge, and the use of the burnout propellant cartridge for firing ammunition.

[0002] When firing ammunition from an armored gun barrel, high temperature and high pressure are generated due to the combustion of the propellant, which causes severe wear of the armored gun barrel, especially for large-caliber projectiles, such as projectiles used in artillery and tanks.

[0003] To reduce wear, erosion-reducing additives, such as wax or kerosene, may be added to the propellant or the burnout propellant cartridge enclosing the propellant, as described in DE 3927400.

[0004] EP 1227295 describes that erosion-reducing additives may be added to the propellant cartridge in the form of an oxide of one of the rare earth elements or elements of the sixth period of the periodic table or polyoxymethylene.

[0005] EP 1647538 describes that, to reduce erosion, polyacetylene or a mixture of WO3 or MoO3 and CeO2 or La2O3 or Y2O3 is added to the propellant cartridge in the form of particles, where the average particle size is 1 to 10 μm and the maximum particle size is 30 μm.

[0006] Tungsten trioxide (WO3) and molybdenum trioxide (MoO3) can be used as additives in the propellant cartridge to reduce gun barrel erosion and thus gun barrel wear, perhaps by capturing atomic hydrogen. However, the gun barrel wear caused by this ammunition still requires further improvement to improve the accuracy during ammunition firing, as it reduces the maintenance effort, extends the service life of the armored gun barrel, and shows a significant decrease in firing accuracy, especially in eroded gun barrels.

[0007] Accordingly, an object of the present invention is to reduce wear of a gun barrel, particularly a gun barrel of a cannon or a tank, caused by ammunition that can be fired from the gun barrel.

[0008] This object is solved by the burnout propellant loading cartridge according to claim 1, the method for manufacturing the burnout propellant loading cartridge according to claim 11, and the use of the burnout propellant loading cartridge according to claim 15. Further features, embodiments and advantages are derived from the dependent claims and the description.

[0009] One aspect of the present invention is a burnout propellant loading cartridge for ammunition that can be fired from an armored gun barrel, pulp, nitrocellulose, 5 to 10% by weight of MO3 particles (where M = Mo and / or W) based on the total weight of the propellant loading cartridge, 0.01 to 2% by weight of a cationic surfactant based on the total weight of the propellant loading cartridge, where the average particle size d of the MO3 particles 50 is 0.5 to 2.0 μm, the maximum particle size d of the MO3 particles 100 is ≦ 20 μm, and the average MO3 concentration (c 3 )(% by weight) in a volume element of about 0.05 to 1.0 cm VE at any location in the propellant loading cartridge and the total MO3 concentration (c total )(% by weight) in the propellant loading cartridge, the quotient c VE :c total is 0.80 to 1.20, relating to a burnout propellant loading cartridge.

[0010] A further aspect of the present invention is the following (a) preparing a slurry of pulp, nitrocellulose, MO3 particles (where M = Mo and / or W) and a cationic surfactant in water; (b) mixing the slurry; (c) dehydrating the slurry on a sieve mold to prepare a green felt; (d) pressing the green felt. (e) drying to form a burnout propellant loading cylinder; Relates to a method for manufacturing a burnout propellant loading cylinder, including

[0011] According to the present invention, it is understood that the MO3 particles are MoO3 particles (molybdenum trioxide particles) or WO3 particles (tungsten trioxide particles). WO3 particles are preferred.

[0012] In the context of the present invention, prior art propellant loading cylinders containing metal oxide particles, such as MoO3 or WO3 particles, exhibit significant variations in the metal oxide concentration in the propellant loading cylinder, which has been found to be at least one factor for still too high gun barrel wear after firing ammunition with the corresponding propellant loading cylinder.

[0013] Surprisingly, by using a cationic surfactant in the manufacturing method, relatively uniform and small particle sizes of MoO3 and / or WO3 particles are obtained, and the concentration variations of MoO3 and / or WO3 in the burnout propellant loading cylinder are reduced. Therefore, the temperature and pressure peaks during firing are avoided, thereby reducing gun barrel wear.

[0014] Although not limited thereto, according to the present invention, the cationic surfactant, combined with relatively small particle sizes and a narrow particle size distribution, counteracts the sedimentation of MoO3 and WO3 particles in the manufacturing method, while promoting the effective recrystallization of MoO3 and WO3 in the pulp (slurry), thereby enabling a relatively uniform particle size distribution. On the other hand, the dispersion effect of the surfactant, i.e., by keeping MoO3 and / or WO3 particles in a suspended state, promotes the adhesion of these particles to the fibers of nitrocellulose and pulp (cellulose), thereby preventing the MoO3 and / or WO3 particles from sinking as a result of gravity. This reduces the concentration variations of MoO3 and / or WO3 particles in the completed propellant loading cylinder. This is particularly relevant to the MoO3 and WO3 particles used according to the present invention. This is because the densities of these substances are particularly high.

[0015] The particle size and particle size distribution are determined using laser diffraction in wet measurement (Malvern system, Mastersizer E, wet measurement in water in a cuvette). Thereby, a particle size distribution curve is provided. d x means that x volume % of the particles have a diameter smaller than the specified value. For example, d 50 when the value (average particle size) is 1 μm, 50 volume % of the particles have a diameter ≤ 1 μm (micrometer). d 100 when the value (maximum particle size) is 10 μm, 100 volume % of the particles have a diameter ≤ 10 μm.

[0016] For the purposes of the present invention, a surfactant is understood to be a substance having surface activity and thus reducing the surface tension of a liquid or the interfacial tension between two phases, thereby supporting the formation of a dispersion, for example, a suspension. A cationic surfactant has a positively charged group, for example, a quaternary ammonium group.

[0017] For the purposes of the present invention, a polyamine is understood to be a saturated, open-chain and / or cyclic organic compound having terminal amino groups and optionally secondary and tertiary amino groups. Such a polyamine can be prepared, for example, by reacting ethylenediamine and / or propylenediamine with ethylene oxide to completely or almost completely replace oxygen atoms. Also, for example, it is possible to react ethylenediamine and / or propylenediamine with epichlorohydrin to completely or almost completely replace oxygen atoms and chlorine atoms. Such a polyamine may be present in the form of an oligomer or a polymer. A cationic surfactant derived from a polyamine is, for example, a salt of a polyamine and an acid, for example, acetic acid.

[0018] In a preferred embodiment of the present invention, the cationic surfactant has two or more cationic groups. Preferably, the cationic surfactant is a salt of an organic polyamine and / or polyethyleneimine and an acid. The acid may be an organic acid or an inorganic acid, preferably an inorganic acid such as hydrochloric acid or sulfuric acid. A surfactant available under the trade name Paragas is more preferred. Paragas is a mixture of various compounds and is essentially a salt of a polyethyleneamine / imine and an acid. With these preferred cationic surfactants, it is possible to achieve a particularly constant MO3 concentration in the propellant charge cartridge, i.e., to reduce the variation in concentration. This means that particularly low gun barrel wear can be achieved during firing.

[0019] The burnt propellant charge cartridge of the present invention contains 0.01 to 2% by weight of a cationic surfactant, preferably 0.05 to 1% by weight, more preferably 0.07 to 0.8% by weight, even more preferably 0.1 to 0.6% by weight, particularly preferably 0.3 to 0.5% by weight of a cationic surfactant. With these concentrations, a very constant MO3 concentration can be achieved in the propellant charge cartridge of the present invention, and thus the gun barrel wear during firing is particularly reduced.

[0020] The burnt propellant charge cartridge of the present invention is characterized by the fact that the concentration of MoO3 and / or WO3 particles in the propellant charge cartridge is more constant than in the propellant charge cartridges of the prior art. In the propellant charge cartridges of the prior art, the concentration inside the propellant charge cartridge varies greatly, and there is also a large variation between cartridges. In known propellant charge cartridges, for example, a concentration difference of nearly -3% by weight, i.e., a minimum value of 5% by weight, is common with respect to an average value of 8% by weight. In contrast, the concentration variation of MoO3 and / or WO3 particles in the propellant charge cartridge of the present invention is smaller, preferably ≦1.5% by weight, more preferably ≦1.0% by weight, particularly preferably ≦0.7% by weight, especially ≦0.5% by weight. In the axial direction of the propellant charge cartridge, the concentration variation is preferably even smaller, preferably ≦1.0% by weight, more preferably ≦0.5% by weight.

[0021] The concentrations of MoO3 and WO3 are measured using a wet chemical method by cutting a fragment of the propellant cartridge, for example, into a size of 1 cm × 1 cm × the wall thickness of the propellant cartridge (usually 3.3 mm), for example, punching it out, destroying it by fuming with concentrated nitric acid, and then ashing it at 800 °C in a muffle furnace. The ash content and the loss on ignition of tungsten trioxide of the preliminary sample (a slurry of nitrocellulose and pulp (cellulose) without WO3) are taken into account. By measuring the residual moisture in the sample, the analysis results can be described in terms of the dry matter.

[0022]

Number

[0023] To determine the total concentration of MoO3 and / or WO3, wet chemical measurements are performed on the entire propellant cartridge using the above method. Alternatively, wet chemical measurements of a volume of approximately 0.05 - 1.0 cm 3 are each performed at least three times at randomly selected locations on the propellant cartridge according to the above method, and an arithmetic mean value can be formed from them. The total concentration (c total ) of MoO3 and / or WO3 in the propellant cartridge is the total mass of MoO3 and / or WO3 in the propellant cartridge divided by the total mass of the propellant cartridge.

[0024] The average MO3 concentration (c 3 ) (weight %) in a volume element of approximately 0.05 - 1.0 cm VE at any location within the propellant cartridge and the total MO3 concentration (ctotal )(the quotient c with (% by weight)) VE :c total is 0.80 to 1.20, preferably 0.85 to 1.15, and most preferably 0.90 to 1.10. Here, M = Mo and / or W, preferably W.

[0025] 0.05 to 1.0 cm 3 The volume element of is preferably about 0.1 to 0.8 cm 3 and more preferably about 0.2 to 0.6 cm 3 and particularly about 0.33 cm 3 has a volume of. Even more preferably, it is a continuous volume element. In a preferred embodiment of the present invention, the volume element has the wall thickness of the propellant loading cylinder. The propellant loading cylinder is usually about 30 to 90 cm (centimeters) in length, 100 to 160 mm (millimeters) in diameter, and about 2 to 4 mm, particularly 3.3 mm, in wall thickness.

[0026] Preferably, c VE The volume element for determining is 0.5 cm × 0.5 cm × 0.2 cm to 1.5 cm × 1.5 cm × 0.4 cm, preferably 0.5 cm × 0.5 cm × 0.33 cm to 1.5 cm × 1.5 cm × 0.33 cm, and particularly preferably 1.0 cm × 1.0 cm × 0.33 cm in size. Therefore, these volume elements having the wall thickness of the propellant loading cylinder as their thickness reflect the axial deviation of the propellant loading cylinder in multiple measurements. The deviation from the average value is particularly small in the axial direction. For the volume element for determining c at a size of 0.5 cm × 0.5 cm × 0.2 cm to 1.5 cm × 1.5 cm × 0.4 cm VE Regarding the volume element for determining c VE :c total is preferably 0.85 to 1.15, preferably 0.90 to 1.10, and particularly preferably 0.92 to 1.08. This reflects the concentration change in the axial direction.

[0027] In a preferred embodiment of the propellant loading cylinder of the present invention, the average particle size d of the MO3 particles 50 is, for example, 0.5 to 2.0 μm, and the maximum particle size d of the MO3 particles 100is ≤ 20 μm, and the average MO3 concentration (c VE )(wt%) in the volume element at any location in the propellant charge tube and the total MO3 concentration (c total )(wt%) in the propellant charge tube, the quotient c VE :c total is 0.85 to 1.15, preferably 0.90 to 1.10, particularly preferably 0.92 to 1.08. Here, the volume element has a size of 0.5 cm × 0.5 cm × 0.2 cm to 1.5 cm × 1.5 cm × 0.4 cm, where the propellant charge tube has a wall thickness, and the wall thickness of the propellant charge tube is 0.2 cm to 0.4 cm.

[0028] As an alternative means to the wet chemical measurement described above, the concentration of MoO3 and / or WO3 can be measured using a scanning electron microscope with energy dispersive X-ray spectroscopy (SEM-EDX). For this purpose, a fragment of the propellant charge tube is prepared, and the SEM-EDX measurement is performed in a region of about 100 μm × 100 μm. This measurement is a surface measurement and shows the concentration of MO3 and / or WO3 (wt%) in the upper layer of the fragment. The wet chemical measurement described above is preferred.

[0029] In a preferred embodiment of the present invention, the MoO3 and / or WO3 particles have a relatively uniform particle size, that is, the particle size distribution is relatively narrow. This is reflected by a lower d 50 value compared to the d 100 value. According to the present invention, the d 50 value of the MO3 particles (MoO3 and / or WO3 particles) is 0.5 to 2.0 μm, preferably 0.7 to 1.6 μm, particularly preferably 0.8 to 1.4 μm, and most preferably 0.9 to 1.1 μm. The d 100The value is ≤20 μm, preferably ≤15 μm, more preferably ≤12 μm, and particularly preferably ≤10 μm. With these particle sizes, on the one hand, in the propellant loading cylinder of the present invention, a very constant MO3 particle concentration, i.e., a particularly small concentration variation, can be achieved. As a result, less gun barrel wear during firing can be achieved. In addition, these uniform particle sizes have the advantage that they themselves guarantee a low temperature and pressure peak during firing, and as a result, the gun barrel wear can be further reduced.

[0030] The uniform particle size in the sense of a narrow particle size distribution is achieved in the method of the present invention by mixing the slurry in the presence of a cationic surfactant, preferably for at least 15 minutes. The mixing is preferably carried out by stirring. Without being bound thereto, according to the present invention, it is assumed that the cationic surfactant is arranged around the regularly slightly negatively charged MoO3 and / or WO3 particles (MoO3 and WO3 are slightly acidic in an aqueous environment), whereby the MoO3 and / or WO3 particles are kept in a suspended state, thereby promoting recrystallization, i.e., dissolution and recrystallization. Even when MoO3 and / or WO3 particles with a wide particle size distribution are used, after implementing the method of the present invention, the particle size distribution in the propellant loading cylinder is very narrow, for example, d 50 = 0.5 to 2.0 μm, preferably 0.8 to 1.4 μm, and d 100 ≤15 μm, preferably ≤12 μm, and particularly preferably ≤10 μm. The particle size distribution becomes narrow, thereby guaranteeing a more uniform heat load and pressure load in the armored gun barrel, thereby avoiding heat peaks and pressure peaks and reducing gun barrel wear.

[0031] The average concentration (total MO3 concentration) of MO3 in the propellant charge cartridge of the present invention is 5 to 10% by weight, preferably 6 to 9% by weight, particularly preferably 7 to 8% by weight, where M = Mo and / or W. M is preferably tungsten (W). In a preferred embodiment of the present invention, the propellant charge cartridge contains less than 1% by weight, preferably less than 0.5% by weight, particularly preferably less than 0.1% by weight of other metal oxide particles in addition to MoO3 and / or WO3 particles.

[0032] The burnout propellant charge cartridge of the present invention preferably contains 45 to 65% by weight, particularly 52 to 58% by weight of nitrocellulose and / or 25 to 50% by weight, particularly 33 to 40% by weight of pulp.

[0033] The method of the present invention is as follows (a) A step of producing a slurry of pulp, nitrocellulose, MO3 particles (where M = Mo and / or W), and a cationic surfactant in water; (b) A step of mixing the slurry, preferably for at least 5 minutes, more preferably for at least 20 minutes, particularly preferably for 30 minutes to 2 hours; (c) A step of dehydrating the slurry on a sieve mold to prepare a green felt; (d) A step of pressing the green felt; (e) A step of drying to form a burnout propellant charge cartridge and includes.

[0034] In a preferred embodiment of the present invention, the slurry in step (a) contains 5 to 10% by weight of MO3 particles based on the total weight of pulp, nitrocellulose, MO3 particles, and the cationic surfactant and / or 0.1 to 2% by weight of the cationic surfactant based on the total weight of pulp, nitrocellulose, MO3 particles, and the cationic surfactant.

[0035] The method of the present invention preferably is as follows (a) In water, based on the total weight of pulp, nitrocellulose, and the propellant cartridge, a slurry is prepared containing 5 to 10 wt% of MO3 particles (where M = Mo and / or W) and 0.1 to 2 wt% of a cationic surfactant based on the total weight of the propellant cartridge. (b) The slurry is preferably mixed for at least 5 minutes, more preferably at least 20 minutes, and particularly preferably for 30 minutes to 2 hours. (c) The slurry is dehydrated on a sieve mold to prepare a green felt. (d) The green felt is pressed. (e) It is dried to form a burnout propellant cartridge. It includes.

[0036] Since the surfactant preferably accumulates partially on the fibers, the amount of surfactant in the cartridge is preferably somewhat less than the amount in the slurry used.

[0037] In a preferred embodiment of the method of the present invention, in step (a), based on the total mass of nitrocellulose, pulp, MoO3 particles and / or WO3 particles, and / or the cationic surfactant, in wt%, respectively, 45 to 65 wt% nitrocellulose, 25 to 50 wt% pulp, 5 to 10 wt% MoO3 particles and / or WO3 particles, 0.1 to 2 wt% cationic surfactant and optionally, an additive, a stabilizer, and / or a binder resin slurry is prepared in water. It is understood that the sum of the wt% of the individual components is 100 wt%. A preferred stabilizer is Akardite.

[0038] The pressing of the green felt in step (d) is preferably carried out at 20 to 175 °C, more preferably at 100 to 175 °C, and most preferably at 120 to 150 °C.

[0039] Drying is preferably carried out under ambient conditions, particularly under so-called standard climate conditions.

[0040] In a preferred embodiment of the method of the present invention, a stabilizer is further added in step (a). This stabilizer is preferably akardite (diphenylamine). This stabilizer particularly helps to stabilize nitrocellulose.

[0041] In an even more preferred embodiment of the method of the present invention, a binder resin is further added in step (a). The binder resin can be added, for example, in the form of binder resin particles. During subsequent hot pressing, the binder resin melts and binds the fibers together. The binder resin is preferably a polymer or polymer mixture of polystyrene-polybutadiene rubber (latex).

[0042] In a preferred embodiment of the present invention, after step (e), a lacquer is applied to the surface of the propellant loading tube. Nitrocellulose lacquer is preferred. Preferably, when using a lacquer, the binder resin described above is added to step (a).

[0043] In an even more preferred embodiment of the method of the present invention, between step (d) and step (e), a plastic is applied to the surface of the pressed raw felt. The plastic is preferably polyurethane (PU). This is preferably done by immersing the pressed raw felt in a bath of polyol containing an isocyanate crosslinking agent and then drying it. Thereby, the polyurethane hardens.

[0044] Preferably, the method of the present invention is as follows (a) producing a slurry of pulp, nitrocellulose, MO3 particles (where M = Mo and / or W), and a cationic surfactant in water; (b) mixing the slurry, preferably for at least 15 minutes; (c) dehydrating the slurry on a sieve mold to prepare a raw felt; (d1) pressing the raw felt; (d2) Applying plastic, preferably polyurethane, to the surface of the pressed raw felt; (e) Drying to form a burnout propellant cartridge; It includes.

[0045] Also, the method of the present invention preferably includes the following (a) Manufacturing a slurry of pulp, nitrocellulose, and binder resin particles in water, and adding MO3 particles (where M = Mo and / or W) and a cationic surfactant in water; (b) Mixing the slurry, preferably for at least 15 minutes; (c) Dehydrating the slurry on a sieve mold to prepare a raw felt; (d) Pressing the raw felt; (e) Drying to form a burnout propellant cartridge; (f) Coating the surface of the burnout propellant cartridge with lacquer, preferably nitrocellulose lacquer; It includes.

[0046] The mixing of the slurry is preferably carried out using a conventional stirring tool, such as a rotary knife. The slurry is poured into a sieve mold, supported by vacuum if possible, and the water is allowed to flow out through the holes of the sieve to dehydrate the slurry. Then, the raw felt is pressed on this sieve mold with a suitable counterpart to produce a slightly wet propellant cartridge. Then, this is dried to produce the burnout propellant cartridge of the present invention.

[0047] The present invention also relates to the use of the propellant cartridge of the present invention for firing ammunition, particularly shells.

[0048] The present invention will be further described below with reference to two examples.

[0049] Example 1 Manufacture of a burnout cylinder for tank ammunition 1. Stir the pulp sheet in water (2627 liters of process water) to form a fiber mash. Place this in a container equipped with a rotating knife at the bottom. Weigh 78.8 kg. Then, grind this fiber mash with a refiner. Add an additional 1200 liters of process water. 2. Stir nitrocellulose into the fiber mash. Weigh 120.0 kg. 3. Control the stock density to approximately 8%. 4. Add an additional 1600 liters of process water. 5. Addition of Paragas: Mix Paragas with water and add it to the batch while stirring. 6. Add the stabilizer Akardite: Slurry and grind Akardite in water. Then, add it to the batch while stirring. 7. Slurry 16.8 kg of WO3 particles in 32 liters of water and add it to the batch while stirring. 8. Pump the batch into the target container and dilute it with process water. 9. Separate the fibers by suction on a sieve mold in a special tank (this tank is in an exchange state with the target container). This produces a raw felt. 10. Then, press the raw felt at approximately 170 °C. During pressing, remove the moisture in the raw felt by vacuum. In this process, manufacture the cylinder in its predetermined shape. 11. Immerse the pressed cylinder in a bath of polyol containing an isocyanate crosslinking agent for a short time to impregnate it with PU, and then dry and cure it in a drying tunnel. 12. Condition (dry) it in a standard climate. 13. Mechanically cut and chamfer the length.

[0050] Example 2 Manufacture of a burnout cylinder for a shell Steps 1 to 3 are the same.

[0051] Here, in step 4, binder resin particles are added. These binder resin particles melt during subsequent pressing and bond the fibers together. These are polymers formed from polystyrene - polybutadiene - latex.

[0052] In the same manner as the above method, raw felt is produced and pressed.

[0053] Here, step 11 is omitted.

[0054] Steps 12 and 13 are performed in the same manner.

[0055] Thereafter, a lacquer process is performed. The lacquer is applied using an NC paint containing a pigment of an appropriate color.

[0056] It is understood that the features mentioned above and the features described below can be used not only in the indicated combinations but also in other combinations or alone without exceeding the scope of the present invention. The advantages of the foregoing features or combinations of features are merely exemplary and may alternatively or cumulatively be effective. Combinations of features of various embodiments of the present invention or combinations of features of various claims may be possible departing from the selected references of the claims.

Claims

1. An incendiary propellant loading tube for ammunition that can be fired from an armored gun barrel, pulp, nitrocellulose, 5 to 10% by weight of MO ３ particles (where M = Mo and / or W), and and contains 0.01 to 2% by weight of a cationic surfactant based on the total weight of the incendiary propellant loading tube, Here, MO ３ The average particle diameter d of the particles ５０ is 0.5 to 2.0 μm, and the maximum particle diameter d of the MO ３ particles １００ is ≦ 20 μm, and the average MO 3 concentration (c ３ ) (wt%) in a volume element of about 0.05 to 1.0 cm at any location in the propellant charge cylinder ＶＥ and the total MO ３ concentration (c ｔｏｔａｌ ) (wt%) in the propellant charge cylinder, the quotient c ＶＥ : c ｔｏｔａｌ is 0.80 to 1.

20. an incendiary propellant loading tube.

2. MO ３ Average particle size d of the particles ５０ The burnout propellant loading cylinder according to claim 1, characterized in that the average particle size d of the particles is 0.8 to 1.4 μm.

3. MO ３ The d of the particles １００ The burnout-emitting propellant loading cylinder according to claim 1 or 2, characterized in that the value is ≤ 12 μm.

4. The propellant loading tube contains 7-8 wt% MO ３ particles and / or 0.05-1 wt% cationic surfactant, and is characterized by the burnt propellant loading tube according to any one of claims 1 to 3.

5. c ＶＥ : c ｔｏｔａｌ = 0.85 to 1.15, characterized by the burnout propellant loading cylinder according to any one of claims 1 to 4.

6. The volume element has a size of about 0.5 cm × 0.5 cm × 0.2 cm to 1.5 cm × 1.5 cm × 0.4 cm, where the propellant loading cylinder has a wall thickness, and the wall thickness of the propellant loading cylinder is 0.2 cm to 0.4 cm, c ＶＥ : c ｔｏｔａｌ = 0.90 to 1.10, and the burnout propellant loading cylinder according to any one of claims 1 to 5 is characterized by this.

7. About 0.33 cm at any point in the propellant charge 3 Average MO in volume elements ３ Concentration (c ＶＥ ) (wt%) and the total MO in the propellant charge ３ Concentration (c ｔｏｔａｌ ) (weight%) and ＶＥ :c ｔｏｔａｌ The burnout propellant charge according to any one of claims 1 to 6, wherein the burnout propellant charge is 0.80 to 1.

20.

8. The incendiary propellant loading tube according to any one of claims 1 to 7, characterized in that M = W.

9. The incendiary propellant loading tube according to any one of claims 1 to 8, characterized in that the cationic surfactant contains two or more cationic groups.

10. The incendiary propellant loading tube according to any one of claims 1 to 9, characterized in that the cationic surfactant is a salt of an organic polyamine and / or polyethyleneimine and an acid.

11. The following (a) In water, preparing a slurry of pulp, nitrocellulose, MO ３ particles (where M = Mo and / or W) and a cationic surfactant; (b) a step of mixing the slurry; (c) a step of dehydrating the slurry on a sieve mold to prepare a raw felt; (d) a step of pressing the raw felt; (e) a step of drying to form an incendiary propellant loading tube A method for manufacturing an incendiary propellant loading tube according to any one of claims 1 to 10, comprising:

12. The slurry in step (a) contains 5 to 10% by weight of MO based on the total weight of pulp, nitrocellulose, MO ３ particles and a cationic surfactant, and / or 0.1 to 2% by weight of a cationic surfactant based on the total weight of pulp, nitrocellulose, MO ３ particles and a cationic surfactant, and / or 0.1 to 2% by weight of a cationic surfactant based on the total weight of pulp, nitrocellulose, MO ３ The method according to claim 11, characterized in that it contains 0.1 to 2% by weight of a cationic surfactant based on the total weight of pulp, nitrocellulose, MO

13. The method according to claim 11 or 12, characterized in that the cationic surfactant contains two or more cationic groups, and preferably the cationic surfactant is a salt of an organic polyamine and an acid.

14. The method according to any one of claims 11 to 13, characterized in that in step (a), a stabilizer, preferably akardite, is further added.

15. Use of an incendiary propellant loading tube according to any one of claims 1 to 10 for firing ammunition, particularly artillery ammunition.

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