RU2382019C1 - Block propellant porous charge (versions) and method of its manufacturing - Google Patents

Abstract

FIELD: explosives.

SUBSTANCE: block propellant porous charge (version 1) is made of composition, which contains non-plasticised fibres of cellulose nitrates and water-soluble polymer of synthetic or natural origin in amount of not more than 25 wt %. Block propellant porous charge (version 2) is made of composition, which contains non-plasticised fibres of cellulose nitrates, water-soluble polymer of synthetic or natural origin in amount of not more than 25 wt % and active filler with particle size of less than 0.4 mm in the form of brisant explosives and/or powders. Method is suggested for manufacturing of block propellant porous charge according to version 2, including preparation of aqueous solution of polymer, preparation of components mixture by mixing of active filler and water-moist non-plasticised fibres of cellulose nitrates and addition of aqueous polymer solution into produced mass, homogenisation of mixture in granulator, formation of charges from produced mixture by pressing and water removal by drying.

EFFECT: improved ballistic properties and operational parametres of propellant charges.

3 cl, 2 tbl

Description

This invention relates to the field of production of block throwing charges used in sleeveless, shell cartridges and attached charges to barrel systems, in particular for sports, hunting smooth-bore and rifled weapons and other artillery systems.

Block throwing charges are made of smokeless monobasic (pyroxylin) or dibasic (ballistic) gunpowders by pressing, extrusion or casting, mainly for caliber shots up to 30 mm and mortar shots. Depending on the design, charges can be single (mono) -, two-, three- and multi-block.

In the scientific and technical literature there is a sufficient amount of information about propellant charges based on cellulose nitrates and smokeless powders. So, for example, in US patent No. 3666533 (C06B 21/02), decl. 06/26/1968, publ. 07/11/1972, describes the manufacture of powder (propellant) charges by compression from pre-plasticized nitroglycerin fibrous cellulose nitrates (SC). In this method, fibrous SCs are first impregnated with a solution of a plasticizer (nitroglycerin) in isopropyl alcohol or dichloromethane, then volatile solvents are removed and the pulp is subsequently pressed to obtain a monolithic shell-free (sleeveless) charge. The main disadvantages of making this charge are:

- the inability to adjust and improve the energy characteristics of the charge due to the introduction of nitroglycerin (NG) only by impregnation;

- high potential production hazard due to the use of explosive, highly toxic components.

U.S. Patent No. 3576926 (C06B 21/02), claimed. 03/28/1968, publ. 04/27/1971, a method for manufacturing sleeveless powder charges by impregnating granular smokeless (dibasic) gunpowder with a solvating solution (40% acetone and 60% alcohol), pressing and then drying them is presented. The approximate composition of the resulting powder charge: SC 84.15 ... 91.0 wt.%, NG 7 ... 15 wt.%, KNO ₃ 0.85 ... 1.0 wt.%, DFA about 0.75 wt.%, Volatile about 0.25 wt.%. The main disadvantages of the proposed composition and method of manufacturing sleeveless charges are the following:

- the complexity and duration of the technological process of production of charges due to the need for pre-production of granular smokeless powder;

- the duration of the removal of volatile solvent from the charge;

- fire and explosion hazard of the pressing phase;

- limited size in the manufacture of large block charges (with a large thickness of the arch) due to the difficulty of removing solvents.

Known US patent No. 3485901 USA (C06B 21/02), decl. 01/04/1968, publ. 12/23/1969, on a method for producing a block (sleeveless) charge by applying to the granules of NTs a coating of organic polymers (acrylates, polystyrene, PVB, melamine formaldehyde). The coating is obtained by sputtering a polymer solution in a volatile solvent, then the shellless block charges are pressed from the obtained encapsulated granules, and then the granules are thermally polymerized. The main disadvantage of the described method is the use of thermoplastics, which, although they provide higher strength characteristics, but in most cases reduce the chemical resistance of NCs, significantly complicate the manufacturing technology. In addition, the additional input of inert coating materials reduces the energy characteristics of the charges.

U.S. Pat. No. 3,723,203 is also known (C06B 1/00), claimed 09/02/1969, publ. 03/27/1973, for the receipt of fuel charges for sleeveless ammunition (for guns). The charge produced by this method for a 7.62 mm cartridge has the following composition:

granular smokeless (pyroxylin) gunpowder 95 ... 99 wt.%, polymer fuel-binding agent (copolymer of ethylene with olefins and other compounds) 0.8 ... 5 wt.%, plasticizer 0 ... 1 wt.%. The disadvantages of this charge are low (due to the introduction of an inert binder) and not regulated over a wide range of energy characteristics and increased fire and explosion hazard of manufacture (charge pressing is carried out at a temperature of 145 ° C).

In the application No. 1575120 Great Britain (С06В 25/18, 21/00), decl. 1980, a powder charge is proposed that contains granules of cellulose powder pulp bound together using less than 7% gelling plasticizer with a melting point below 80 ° C. As such a plasticizer, glycerol mono-, di- or triacetate, adipic or succinic acid polyester, ethylene glycol diallyl carbonate or hexamethylene diisocyanate are used. The granules are impregnated with a plasticizer, passed through sieves, processed with graphite, and then pressed and heated in a mold to form a charge. Cellulose nitrate powder granules may contain diphenylamine as a stabilizer and potassium sulfate as a flame retardant.

The disadvantages of this charge are:

- a large dependence of its burning rate on external temperature;

- high explosion and fire hazard production of charge components - ballistic powders, due to the use of nitroglycerin.

The prototype of the invention is US patent No. 369781 (C06B 21/00), the application. 10/17/1969, publ. 07/25/1972, which describes the composition and method for producing powder charges by hot pressing from elements of monobasic (pyroxylin) cellulose nitrate powder, previously coated with explosive layers and plasticized with a thermoplastic binder. In accordance with this patent, the composition of the charge includes a polymeric binder up to 1.2 wt.%, A plasticizer up to 0.18 wt.% And an active filler - granules of non-graphite pyroxylin gunpowder up to 97.42 wt.% And blasting explosives up to 1.2 wt. .%. According to this patent, the manufacture of charges is as follows: the powder granules are uniformly coated with a layer of explosive (for example, PETN), then with a layer of a polymer binder (for example, PVA) from its aqueous dispersion or from its solution in alcohol or another solvent also containing a plasticizer (DBP ), then the volatile solvent is removed by drying, the powder-coated granules of the powder are heated to 82-110 ° C and charges are formed by pressing the granules at a pressure of 420-700 kgf / cm ² .

However, the described composition and method of manufacturing a propellant charge have a number of significant drawbacks, because, firstly, they do not provide the possibility of increasing the energy characteristics of the charge and controlling its burning rate (gas generation rate), which, accordingly, negatively affects the ballistic efficiency of the charge; secondly, the complex technological design of charge production does not provide environmental and technological safety; thirdly, there is no possibility of prompt response to customer needs for manufactured products due to the difficulty of reconfiguring the production line to change or expand the range.

The technical result of this invention is the elimination of these drawbacks, namely the creation of a block propellant porous charge having improved energy, ballistic, operational and technological characteristics, and a method for its manufacture with a relatively low cost of production, providing the ability to control characteristics in a wide range of values, the speed of changing the assortment manufactured products depending on customer needs, environmental and those technological safety of production.

The technical result is achieved in two versions of the block propellant porous charge. The porous block propellant charge according to the first embodiment is made up of a composition containing unplasticized cellulose nitrate fibers and a water-soluble polymer of synthetic or natural origin in an amount of not more than 25 wt.%.

According to the second variant, the block propellant is made up of a composition containing unplasticized cellulose nitrate fibers, a water-soluble polymer of synthetic or natural origin in an amount of not more than 25 wt.%, And as an active filler, the composition contains an active filler with a particle size of less than 0.4 mm in in the form of blasting explosives in an amount of not more than 70 wt.% by weight of the active filler and granular and / or crushed pyroxylin, ballistic, spherical gunpowders and / or these wastes rochs in an amount of not more than 80 wt.% by weight of the active filler, or blasting explosives, or granular and / or ground pyroxylin, ballistic, spherical powders and / or waste of these powders.

A method of manufacturing a block propellant porous charge according to option 2 consists in preparing a mixture of components by mixing the active filler and water-wet unplasticized fibers of cellulose nitrate and adding to the resulting mass an aqueous polymer solution, homogenizing the resulting mixture in a granulator, forming charges from the resulting mixture with water content 15 ... 25 wt.% And removing water by drying.

The positive effect of the present invention is achieved due to the joint use of water-soluble polymers and unplasticized fibers of the SC, providing manufacturability, strength of the propellant block porous charge, the constancy of its operational characteristics. The main advantage of using water-soluble polymers in the composition of the block propellant charge is that they do not interact with the NTs and do not plasticize them, preserving the initial structure of the NTs fibers. Possessing high adhesive and film-forming properties, water-soluble polymers in the process of forming a block porous charge glue individual fibers of SC. As a result, due to the use of a mixture of unplasticized fibrous SC with water-soluble polymers as part of a block propellant porous charge, a high reinforcing effect is achieved, which gives the block charge an increased mechanical strength.

The use of water-soluble polymers, which act as a binder, is environmentally and technologically feasible, economically advantageous, since water is used as a polymer solvent, which also does not plasticize NTs fibers and active filler particles, but evenly distributes polymers on the surface of fibers and particles. The use of water ensures high manufacturability of the manufacture of block throwing charges, the safety of the process of forming charges containing SC, gunpowder and / or blasting explosives, the cost of the final product is reduced, all this makes the present invention more cost-effective. For comparison: in the production of pyroxylin powders, the cost of an alcohol-ether solvent is about half the cost of powder.

Polymers of synthetic and natural origin, for example, cellulose ethers (methyl, hydroxyethyl, carboxymethyl cellulose), polysaccharides (starch, dextrins), protein substances (casein, fencing, animal adhesives), can be used as water-soluble polymers in the block propellant charge; polyacrylonitrile, polyvinyl alcohol and others.

Among the vast spectrum of water-soluble polymers, polyvinyl alcohol can find the most widespread application in the composition of a propellant block propellant, the choice of which is due to its resistance to the exnmatic effect of bacteria and mold, which is exposed to most water-soluble natural polymers and cellulose ethers. The high content of oxygen and hydrogen in the polyvinyl alcohol macromolecule, as well as the absence of heteroatoms, is favorable for maintaining the energy characteristics of block propellant charges, and the presence of hydroxyl groups makes it possible to bind nitrogen oxides released during the decomposition of NC. In addition, polyvinyl alcohol is physiologically harmless, which is why it is widely used in medicine and in the food industry (Encyclopedia of Polymers. - M .: Soviet Encyclopedia, 1972).

The porosity of the structure of the block propellant charge is ensured by the use of fibrous cellulose nitrates. In the process of esterification, SCs mainly retain the shape and size of the feedstock — cellulose. Numerous microscopic studies (Rogovin Z. A. Chemistry of cellulose. - M .: Nauka, 1972) show that the shape and size of the capillary fiber of cellulose depend on the source of raw materials (cotton, wood, etc.) and vary within small limits. The relative constancy of the size of the cellulose fiber and, as a result, the SC fiber provides the possibility of regulation, constancy and reproducibility of the porosity of the material of the block charge. Relatively high energy characteristics of the NC and a large specific surface of the fiber determine the regulation of the burning rate over a wide range (2 ... 3 orders). Thus, the introduction of fibrous SCs into the block propellant charge makes it possible to create porosity and provide the possibility of its regulation depending on the required linear burning rate (i.e., gas generation rate).

In order to achieve the highest energy characteristics and increase the ballistic efficiency of the block propellant, it is recommended to use highly esterified SCs (see Table 1), especially fibrous pyroxylin No. 1, which has the maximum energy among pyroxylins.

Table 1 Highly esterified SC (pyroxylins) Pyroxylin, its brand Nitrogen content Conditional viscosity, ° E Solubility%, not less than Application area ml NO / g % High Nitrogen BA-I not less than 208 not less than 13.02 4 ... 15 22 Gunpowder making High Nitrogen BA-II 208.5 ... 210 13.05 ... 13.14 8 ... 12 31.5 Gunpowder making Mid nitrogen CA 204 ... 207.9 12.76 ... 13.01 8 ... 12 32 Gunpowder making Pyroxylin No. 1 1P not less than 209 not less than 13.09 8 ... 12 four Production of mixed pyroxylins

The strength and technological characteristics of the block charge depend on the ratio between the water-soluble polymer and the fibrous SC. So, with an increase in the content of polyvinyl alcohol, the charge porosity decreases, the strength increases, and the technological characteristics improve. However, with an increase in the content of water-soluble polymer, the energy characteristics of the charge decrease. Therefore, the optimal content is the minimum content of water-soluble polymer, which ensures good processability of the moldable mass and high strength characteristics of the manufactured block propellant charge.

According to the second embodiment, the composition of the propellant block propellant charge contains blasting explosives (for example, RDX, HMX, etc.) and / or granular and / or ground pyroxylin, ballistic, spherical gunpowder and / or waste of these gunpowders with a size particles less than 0.4 mm.

An additional advantage of introducing an active filler based on gunpowders into the block charge is the possibility of disposing of pyroxylin, ballistic, and spherical powders that are obsolete and removed from the Federal Reserve. The introduction into the composition of a block charge of an active filler based on blasting explosives allows not only to provide an additional increase in the energy characteristics of the charge, but also makes it possible to regulate them in a fairly wide range of values. However, the maximum content of active filler components is limited by the mechanical strength of the charge and the provision of explosion safety conditions for its manufacture, amounting to:

for gunpowder and / or their waste not more than 80 wt.%, for blasting explosives not more than 70 wt.%.

A wide range of concentrations of the main components contained in the propellant charge allows you to adjust the physico-mechanical and energy properties, which makes the composition universal for the manufacture of block propellant propellant charges of various sizes, structures and purposes. This invention also provides for the possibility of using waste powdered nitrate cellulose powders and fibrous SC, which generally affects a significant reduction in the cost of the produced charge.

Since water-soluble polymers do not plasticize high-nitrogen pyroxylins, the regulation of the burning rate (gas generation rate) of the charges is supposed to be carried out by changing the porosity of the blocks during molding, as well as by introducing grain powders with different thicknesses of the burning roof.

To ensure reproducibility of the ballistic characteristics of shots containing block propellant porous charges, it is necessary to uniformly distribute the components of the charge formulation in volume, which is achieved by the optimal organization of the manufacturing process. The technological process for the production of block charges consists of the following phases:

- preparation of an aqueous polymer solution;

- preparation and dosing of the components of the composition;

- mixing the components of the charging mass;

- homogenization of the mixture;

- molding charges by pressing;

- removal of solvent (water) by drying.

The technological phase of the preparation and dosing of components must be carried out in an aqueous medium, the uniformity of the polymer distribution on the surface of SC fibers, strength and formability of the charges depend on this. The introduction of aqueous solutions of polymers and an increase in the liquid-phase component of the polymer binder due to the use of water-wet (up to 95 ... 100 wt.%) Fibrous SCs also contribute to a more uniform distribution of the finely dispersed components of the active filler in the matrix frame formed by SC fibers with a polymer distributed over their surface, which makes it possible to achieve technological reproducibility of block propellant charges with a certain burning rate and high ballistic uniformity at certain values pressing pressure in a safe environment of their formation.

The optimal water content to ensure uniform distribution of the polymer should be in the range of 25 ... 35 wt.%, And its content before molding in the range of 15 ... 25 wt.%. At a higher water content, extrusion of the polymer solution and low strength of the charges are observed, which complicates their removal from the molds. When the water content is less than 15 wt.%, The strength of the block charges is also reduced due to the lack of binding of individual fibers of the NC polymer binder.

The preparation of active filler components involves the preliminary grinding of coarse and tubular powders to obtain a fractional composition of less than 0.4 mm.

The final mixing of the mass is carried out in any mixer, where the prepared components are dosed. For homogenization of the mixed mass, its averaging, elimination of lumps and foreign objects, the mixed mass is passed through any granulator, the cell size of which will be determined by the particle size of the active filler.

The formation of block charges is carried out by the method of blind pressing. By adjusting the pressing pressure or the degree of compaction, it is possible to change the range of products depending on the needs of the customer and receive block propellant charges for various barrel systems, while different porosity of the block propellant charges will be provided during molding by changing the pressing conditions. The maximum density of block charges is achieved by pressing without a limiter on the length of the piston stroke, and block charges of high porosity are obtained by setting the limiter on a certain piston stroke height. Then, in the manufacture of high-density charges, the maximum specific pressing pressure will be 50 MPa, and in the production of high-porous charges, 0.05 MPa. However, both highly porous charges and high-density charges will relate to porous propellant charges, since even with a maximum degree of compaction, porosity will exist in a block charge due to the internal capillary porosity of the NC fibers.

To remove residual moisture from block charges, they are dried at a temperature of + 50 ° C to constant weight.

The main distinguishing features of the block propellant porous charge and the method of its manufacture from the prototype are:

1 application in the composition for the manufacture of a block propellant porous charge of water-soluble polymers of synthetic or natural origin together with unplasticized fibers of SC;

2 the use of fibrous SCs coated with a thin layer of a water-soluble polymer, which form a kind of matrix frame that gives the block charge high strength due to the good adhesive properties of the polymer component of the composition;

3 the use of highly esterified watery SCs (pyroxylin No. 1), which make it possible to increase the energy properties of the charge, as part of a block propellant porous charge;

4 use in the production of block propellant charges of aqueous solutions of polymers that ensure environmental and technological safety of the process of manufacturing charges;

5 the relative simplicity and safety of the technological process for the production of block propellant charges;

6 the ability to control the ballistic characteristics of the block propellant charge by changing the component composition and production techniques;

7 lower cost of production of the propellant charge due to the lack of organic solvents in the formulation and the simplification of the manufacturing process cycle due to the absence of the need for SC dehydration phases (water-wet pyroxylin goes into the technological cycle) and solvent recovery;

8, the composition of the block propellant charge does not require the introduction of a chemical resistance stabilizer, since the presence of hydroxyl groups makes it possible to bind nitrogen oxides released during the decomposition of NCs, which positively affects the increase in physicochemical stability, energy characteristics of the charge, and simplification of the technological process.

The above distinguishing features of this invention together provide a positive technical result.

In accordance with this invention, the manufacture of block propellant porous charge is as follows.

To prepare the polymer binder, polyvinyl alcohol is used in the form of a 7 ... 10% aqueous solution, which is obtained in two stages. At stage I, the polymer sample swells in water for 2 hours at a temperature of + 20 ° C. At stage II, the polymer is dissolved at a temperature of + 90 ... 100 ° C also within 2 hours. A portion of pyroxylin No. 1 is taken taking into account water humidity. The preparation of the active filler consists in taking weights as calculated. If necessary, fractionation of the filler is performed.

Fine-grained and spherical gunpowder is used in the form of ready-made non-graphitized elements or granules. Ballistic powder, pyroxylin tubular and coarse-grained powder is previously crushed to a fraction of less than 0.4 mm. High explosives are used in the form of a finished powder.

The preparation of the mass for subsequent pressing is carried out in any mixer of the blade type by dosing in a certain proportion and the established order of all prepared components and their subsequent mixing. A sample of water-wet pyroxylin No. 1 and an active filler (powder crumbs and / or explosive explosive) are loaded into the mixer and mixed until a homogeneous mass is formed, after which an aqueous solution of polyvinyl alcohol is added to the resulting mass. The mixture is mixed at a temperature of 18 ... 20 ° C for 20 ... 30 minutes

Next, the homogenization of the mixed mass is carried out in a granulator. The resulting mass with a water content of 15 ... 25 wt.% Is directed to molding. The regulation of porosity of block propellant charges is carried out by establishing the necessary degree of compaction or pressing pressure. So, for high-density charges, the maximum specific pressing pressure is 50 MPa, for highly porous charges, 0.05 MPa.

To remove residual moisture, block charges are dried at a temperature of + 50 ° C to constant weight.

The results of tests on block charges confirm that during the usual low-temperature (+ 50 ° С) drying, removal of residual moisture with a thickness of the burning roof of the charge up to 25 mm and more does not present any special difficulties, while the hygroscopicity of the charge material does not exceed 2.5%.

Ballistic assessment of charges was carried out by ballistic tests of shot cartridges equipped with block charges with various formulation and technological parameters, with the definition of the following main characteristics:

V ₁₀ - the flight speed of the fraction at a distance of 10 m from the muzzle, m / s;

p _max - the maximum pressure of the powder gases, MPa.

Examples of the manufacture of block propellant charges, variants of their formulations, physico-chemical characteristics, results of manometric and ballistic tests are given in Table 2.

For testing, block charges were prepared according to the above technology in the form of cylindrical columns with a diameter of 16.3 mm, the length varied depending on the porosity.

For the equipment of sporting cartridges, plastic shells of the SOP type were used, into which block charges were inserted.

The cartridges were equipped with shot lead hunting type OT-6 GOST 7837-78, a shot fraction 24 g.

The assembly of cartridges was carried out in the prescribed manner using a French wad-container and with a roll-in of the "star" type.

Ballistic tests were carried out by firing from a 12-gauge ballistic gun of the MTs 16-12-70 brand.

An analysis of the results of ballistic tests shows a direct dependence of the growth of pressure of powder gases with increasing porosity, which indicates the stability of the combustion process and good technological reproducibility of block charges.

The energy characteristics of the block propellant porous charge are higher than that of the prototype, since the formulation contains fibrous SC - high-energy pyroxylin No. 1. In addition, the formulation does not require the introduction of stabilizers of chemical resistance, reducing the energy of the charge. Due to the introduction of the active filler into the composition of the block charge, its calorific value can be in a wide range: 2895-4525 kJ / kg (see table 2).

Block charges can find wide practical application in small arms and sports and hunting weapons, as well as in artillery systems with caliber up to 30 mm and higher. In mortar shots from block charges, both main and additional (removable) charges can be equipped. Block charges have good prospects for replacing regular charges for construction cartridges.

table 2 Physico-chemical and ballistic characteristics of experimental compositions of block charges Characteristics Numbers of experimental compositions of block charges I II III IV V VI Composition, wt.%: pyroxylin No. 1 93 93 37 37 37 37 polyvinyl alcohol 7 7 7 7 7 7 powder crumb - - 56 56 - - octogen - - - - 56 56 Calorie content Q _W , kJ / kg 4100 4100 2895 2895 4525 4525 Porosity P,% 31 56 34 52 32 54 Burning rate * at a pressure of P = 50 MPa, u, m / s 9.0 26.0 12.5 18.7 14.3 32,0 Ballistic characteristics ** with a charge of 1.4 g: fraction flight speed V ₁₀ , m / s 321 330 348 340 - - the maximum pressure of the powder gases P _max , MPa 57 60 87 102 - - Note: * - the results of manometric tests on the test and computing complex "Volcano"; ** - results of ballistic tests in a 12-gauge smoothbore gun

Based on the present invention, by arranging from single-block components, it is possible to create various multi-block charges with a wide range of tactical and technical characteristics for various purposes.

To organize the production of block charges, there is a sufficient amount of raw materials in the form of obsolete pyroxylin and ballistic powders, their waste in the form of powder crumbs, blasting explosives, as well as water-wet cellulose nitrate semi-finished products and water-soluble polymers. The organization of production is most appropriate at existing enterprises in the industry of light industry, taking into account the available equipment and personnel potential.

Thus, the proposed composition of the block propellant charge and the method of its manufacture in comparison with the prototype have the following advantages:

- the possibility of manufacturing block propellant propellant charge with physico-chemical, energy and ballistic characteristics in a wide range of values, which determines the universality of the production of propellant charges for various artillery systems, including for sports and hunting smooth-bore and rifled weapons;

- the ability to control the burning rate of block propellant porous charges in a wide range due to changes in the composition and technological methods of forming charges;

- the versatility and simplicity of the hardware and technological design of the production of block charges;

- technological, physiological and environmental safety of the production of block propellant charges by maintaining the technological phases of production in the aquatic environment and using water as a solvent;

- the economic feasibility of the production of block throwing charges and the assembly of shots based on them;

- the possibility and ease of disposal of obsolete gunpowder as an active filler of block charges.

On the basis of this invention, it is possible to create modern, compact, high-tech, environmentally friendly industries for the production of block charges for various systems of barrel artillery with a wide range of tactical and technical characteristics.

Claims (3)

1. Block propellant porous charge made of a composition containing a polymer, characterized in that the composition contains unplasticized cellulose nitrate fibers, and as a polymer is a water-soluble polymer of synthetic or natural origin in an amount of not more than 25 wt.%. 2. Block propellant porous charge made of a composition containing a polymer and an active filler, characterized in that the composition contains unplasticized cellulose nitrate fibers, as a polymer - a water-soluble polymer of synthetic or natural origin in an amount of not more than 25 wt.%, And as active filler composition contains an active filler with a particle size of less than 0.4 mm in the form of blasting explosives in an amount of not more than 70 wt.% by weight of the active filler and granular and / or crushed pyroxylin, ballistic, spherical gunpowder and / or waste of these gunpowders in an amount of not more than 80 wt.% by weight of the active filler, or blasting explosives, or granular and / or ground pyroxylin, ballistic, spherical gunpowder and / or waste of these gunpowders. 3. A method of manufacturing a block propellant porous charge, comprising preparing an aqueous polymer solution, preparing a mixture of components, forming charges from the resulting mixture by compression, removing water by drying, characterized in that the block propelling charge according to claim 2 is made, wherein the mixture of components is prepared by mixing active filler and water-wet unplasticized fibers of cellulose nitrates and adding to the resulting mass of an aqueous polymer solution, the resulting mixture is homogenized in a granulator, aryady formed from mixtures containing water 15 ... 25 wt.%.