Propellant charge

FIELD: weapons and ammunition.

SUBSTANCE: propellant charge represents a single unit composed of compacted grains with polymer coating applied on their surface. Said polymer coating is made of water soluble polymers of synthetic or natural origin in amount of 5-15 wt %. Unit porosity makes 5-60%.

EFFECT: perfected propellant charge.

5 cl, 1 tbl

 

This invention relates to the field of munitions, namely modular propelling charges for equipment besilesomab, tubular cartridges and charges attached to the receiver systems, and can be used in the design and manufacture of advanced weapons with improved physico-mechanical and ballistic characteristics.

Today known U.S. patent No. 3723203 (Appl. 02.09.1969,, publ. 27.03.1973,, MKI C06B 1/00) upon receipt of the fuel charges for besilesomab ammunition for hand guns. Manufactured in this way the charge to 7.62 mm cartridge has the following composition: granular smokeless (pyroxylin) gunpowder - 95...99 wt.%, polymeric fuel binder (a copolymer of ethylene with olefins and other compounds) of 0.8 to 5 wt.%, plasticizer - 0...1 wt.%. However, compressing the charge is carried out at a temperature of 145°C, causing a potential fire and explosion hazards of manufacture and is its main drawback.

Also known powder charge (UK application No. 1575120, 1980, MKI C06B 25/18, 21/00), which contains granules of cellulose nitrate gunpowder connected together using less than 7% gelatinised plasticizer with a melting point below 80°C, which are used as mono-, di - or triacetate of glycerol, polyester based on adipic what do succinic acid, diallylmalonate of ethylene glycol or hexamethylenediisocyanate. The pellets are impregnated with a plasticizer, are passed through sieves, processed graphite, and then pressed and heated to form prior to the formation of charge. Granules of cellulose nitrate powder may contain diphenylamine as a stabilizer and potassium sulfate as flame retardant additives.

In U.S. patent No. 3679781 (Appl. 17.10.1969,, publ. 25.07.1972,, MKI C06B 21/00) provides a composition and method for producing propellant charges by hot pressing of the elements monobasic (pyroxylin) cellulose nitrate powder, pre-coated with layers of explosives and plasticized thermoplastic binder. The composition of the charge includes a polymer binder to 1.2 wt.%, plasticizer - to 0.18 wt.% and active filler (granules degradirovannoi pyroxylin powder to 97,42 wt.% and blasting explosives to 1.2 wt.%). The manufacturer charges is performed by a uniform coating of the powder granules with a layer of explosives (PETN), then a layer of polymeric binder (PVA) from the aqueous dispersion or solution in alcohol or other solvent containing the plasticizer (DBP), the further removal of volatile solvent by drying by heating the coated binder granules of gunpowder to 82...110°C and forming the dawn of the options by pressing pellets at a pressure of 420 to 700 kgf/cm 2.

The main disadvantages of the above inventions propelling charges are as follows:

- the use of thermoplastics, which, although they provide a higher strength characteristics, but, in most cases, reduce chemical resistance and significantly complicate the manufacturing technology of charges;

- the use of explosives formulations for increasing the energy of the block charges, leading to an increase in the risk of production;

- uncontrolled deformation and destruction of the powder elements in forming charges with a small amount of binder and high pressure, leading to an increase in ballistic heterogeneity and reduce the reproducibility of the parameters of the shot. The high content of inert polymeric binder in recipes makes lower pressure block charges, but negatively affects their energy performance;

- limited use of modular charges from the high-energy components due to high sensitivity to mechanical stress and high temperatures of combustion, which create additional security problems of production and maintenance charges.

The prototype of the present invention is the patent of Russia №2153144 (1999, MCI F2B 5/16), describing a propelling charge for unitary cartridges barreled weapons, contains two components: the first component is pressed smokeless gunpowder, the second component - granulated smokeless powder in the form of bulk, and the first component is made in one piece, pressed from the powder grains, the surface of which is deposited inhibiting coating, the porosity of the block is 5...25%and a unit weight equal to 75...95% of the total weight of the charge. In addition, the block can be executed Deposit (including those consisting of several pieces) or pressed into the sleeve. Also, the unit may have a Central channel with a diameter of 0.1...0.3 diameter of the block.

However, the described invention has a number of significant drawbacks. First, the invention allows to produce only high-density propellant charges with a density of loading of 1.1...1.3 g/cm3and the range of porosity from 5%to 25%. Secondly, to be applied on the surface of the powder grains inhibiting coating should be sufficiently complex technological design production propelling charges. Thirdly, according to this invention may have a narrow range of speed regulation of gas in the charge, depending on the type and thickness of the inhibiting coating on the individual powder grains and their sizes.

All this does not allow yet to respond quickly to customer needs into the products and does not contribute to the extension of its range, and complex technological design production charges does not provide environmental and technological safety.

The technical result of the present invention is to eliminate the above drawbacks, namely the creation of a better propellant with improved energy, ballistic, performance characteristics and their regulation in a wide range of values in the production process, providing environmental and technological safety and efficiency change range of products depending on the customer's needs.

The technical result is achieved by propelling charge for unitary cartridges barreled weapons made in one piece, pressed from the powder grains on the surface which are covered with a polymer coating, and the polymer coating are water-soluble polymers of synthetic or natural origin in the amount of 5-15 wt.%, and the porosity of the block is 5-60%. Propelling charge may contain active filler, which can be used shredded pyroxylin, ballistic, spherical powders in any ratio, and/or waste of these powders in the amount of up to 80 wt.%, and/or blasting explosive in Koli is este to 70 wt.% Propelling charge may be made independent (including, consisting of several pieces) or pressed into the sleeve.

Prescription-technological methods in the manufacture of the block of propellant will allow due to changes in porosity in a fairly wide range of values significantly change the nature of its combustion and to adjust the speed of the gas, which will contribute to the creation of a modern propellant charges with advanced combustion and adjustable ballistic characteristics.

The positive effect of the present invention is achieved by using as the polymeric coating of water-soluble polymers, which, as a binder for the powder grains and active filler, ensure the manufacturability of the molded block, the strength of the propellant charge, the consistency of his performance. The main advantage of the use of water-soluble polymers as polymer coatings is that they do not enter into chemical reactions with cellulose nitrate powders and not plastificator them, while preserving the original shape and the internal porosity of the powder elements. Having high adhesion and film-forming properties, a water-soluble polymer in the molding process block glued charge the individual powder grains and particles of active filler, due to chagodoschensky high reinforcing effect, giving a block to charge an increased mechanical strength.

As a solvent of the polymer is water which does not enter into chemical interaction with cellulose nitrate powders and particles of active filler and not plasticizes them, and enables you to evenly distribute the polymer on the surface of the powder grains and particles for the formation of a polymer coating. As a result of application of water is ensured manufacturability modular propelling charges, security of carrying out the process of forming charges. Due to the lack of cost on the classic solvent-plasticizers (alcohol, ether, ethyl acetate) and their recovery reduces the cost of the final product, i.e. modular propelling charges. All this makes the present invention economically, environmentally, and technologically feasible.

For polymer coating the surface of the powder grains and active filler as water-soluble polymers can be any of the polymers of synthetic and natural origin, for example: ethers, cellulose (methyl-, oxyethyl-, carboxymethyl cellulose), polysaccharides (starch, dextrin), protein (casein, mezdrovyj, animal glues), polyacrylonitrile, polyvinyl alcohol and others.

Most of the rationale for asno use as a binder of polyvinyl alcohol. Unlike most water-soluble natural polymers and ethers of cellulose polyvinyl alcohol is resistant against enzimaticescoe the action of bacteria and mold. The high content in the macromolecule polyvinyl alcohol oxygen and hydrogen, as well as the absence of heteroatoms favorably to save energy performance modular propelling charges. The presence of hydroxyl groups in the polyvinyl alcohol makes the possibility of linking nitrogen oxides released during the decomposition of gunpowder. In addition, polyvinyl alcohol physiologically harmless, so it is widely used in medicine and in the food industry.

Thus, a water-soluble polymer used in the formulation of the block of propellant bonding powder items or powder crumbs in forming, is a major component of ensuring the manufacturability and durability. The use of water-soluble polymer used in the formulation of the charge leads to the possibility of organizing a recycling of products after completion of their term storage in warehouses or relatively easy to repair defective products in the manufacturing process.

As a component that provides the porosity of the structure of the charge used granulated powder. In the molding process block charges with vocarstvo Imam polymer saved geometric shape, the size and porosity of the original powder elements relative constancy for granulated powders of one brand provides the ability to control, constancy and reproducibility of porosity block charge. When using granulated powders of different brands, different geometric sizes and porosity, it is possible to provide speed control of combustion in a wide range.

As an active filler block of propellant proposed use Pelkosenniemi pyroxylin and/or spherical powders and/or crushed pyroxylin, ballistic powders in any ratio, and/or disposal of these powders and/or high explosives (e.g., RDX, HMX and so on). To achieve a very high energy performance and increase ballistic efficiency of the block of propellant, it is advisable to use as an active filler - high explosives. The introduction of the block charge active filler on the basis of gunpowder (and/or their waste) and/or high explosives allows not only to improve the energy characteristics of the charge, but also allows their regulation in a fairly wide range of values. However, limiting the content of the components AK is active filler is limited by the mechanical strength of the charge and ensuring the conditions for the explosion in its manufacture, accounting: for powders and/or their waste - not more than 80 wt.%, for high explosives - not more than 70 wt.%.

The invention also provides for the possibility of the use of outdated cellulose nitrate powders withdrawn from the reserve, which will affect a significant reduction of the manufacturing costs are low.

Mechanical and technological characteristics of the block of propellant depend on the ratio between the water-soluble polymer, the powder elements and an active filler. The number you enter in the formulation of the polymer depends on the geometric dimensions of the powder elements and active filler. Optimum is the minimum content of the water-soluble polymer, which provides high strength characteristics block charges and good manufacturability.

To ensure the reproducibility of the ballistic characteristics shots containing modular propelling charges, you want an even distribution of the ingredients of the charges by volume. As water-soluble polymers not plastificator powder, the regulation of the speed of combustion and rate of gas charges expected to occur due to the introduction of granulated powders with different thickness of the burning vault. A wide range of content of the main component is having the composition of the propellant charge also allows you to adjust the physico-mechanical and energetic properties, what does the generic for manufacturing modular propelling charges various sizes, designs and purposes.

The porosity of the block 5...60% is chosen based on the need to create a certain speed of the convective flame spread on the block and ensure high physical-mechanical characteristics of the charge (the strength of the unit is more than 20 MPa).

The molding block charges can be carried out by the method of the deaf pressing (stamping) of cellulose nitrate grains of powder with a polymer coating in the form of a supplementary piece with a diameter close to the inner diameter of the sleeve, or by pressing directly in the socket. Invest in a sleeve unit may consist of several pieces, if conditions stamping do not allow to make a full block length in one step.

By regulating the qualitative and quantitative composition of the charge (granulated powders and active filler) you can change the range of products depending on the customer's needs and to get a block propelling charges under various receiver systems, with different porosity block throwing charges will be ensured by the use of the powder elements of different brands.

The main distinctive features of the block of propellant from the prototype are:

1. use the use of water-soluble polymers of synthetic or natural origin as a polymer coating the surface of the powder elements;

2. giving charge high strength characteristics due to the good adhesion properties of the water-soluble polymer;

3. used in the manufacture of modular propelling charges of aqueous polymer solutions, providing environmental and technological safety of the manufacturing process charges;

4. the relative safety of the production process of modular propelling charges caused by the use of the solvent of the polymer - water;

5. the ability to control ballistic characteristics due to a change in the qualitative and quantitative composition of the block of propellant;

6. low cost propellant charge due to the absence of organic solvents in the formulation and the need for their recovery;

7. the composition of the block of propellant does not require the introduction of a stabilizer chemical resistance, because the hydroxyl groups of polyvinyl alcohol makes the possibility of linking nitrogen oxides released during the decomposition of gunpowder that can have a positive effect on the energy characteristics of the battery and improve its physical and chemical stability.

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

Examples of formulations block charges, their physico-mechanical characteristics, the results of manometric and ballistic tests are given in the table.

The results of the study characteristics of the experimental compositions modular propelling charges
FeaturesNon experienced compositions
IIIIIIIVVVI
Composition, wt.%:
granulated powder939238383838
polyvinyl alcohol : 788888
on Ahova crumb --5454--
HMX----5454
The calorific value QW, kJ/kg289528002800280042104210
The porosity P %523132503453
The burning rate* at pressure P=50 MPa, u, m/s36,0to 12.012,528,714,335,0
Ballistic characteristics** when hanging the charge 1.4 g:
airspeed fraction V10m/s330320325340--
the maximum pressure of the powder gases Pmax, MPa605759102--
Note: * - the results of pressure tests on the test-processing center "Volcano";
** - the results of ballistic tests in smoothbore gun 12 gauge

Ballistic evaluation of modular propelling charges was conducted by the ballistic tests of shotgun shells with the definition:

- V10flight fraction at a distance of 10 m from the muzzle end, m/s;

- maximum pressure pmaxthe powder gases MPa.

For testing block charges were merged into the form of cylinders with a diameter of 16 mm, length varied depending on porosity. For equipment sporting cartridges were used liners plastic-type SOPS, which are inserted block charges. The cartridges were filled with shot lead hunting type-6 GOST 7837-78, hinging fraction - 24, the Assembly of cartridges was carried out in the prescribed manner with French plug container and sealing of the star. Ballistic tests were conducted by firing ballistic weapons 12-gauge mark MC 16-12-70.

Analysis of results indicates that the energy characteristics of the bulk charge can be higher than that of the prototype, since the formulation may contain as the active filler blasting explosives, in addition, the recipe does not require stabilizers chemical resistance, reducing energy charge. Therefore, the calorie block charges can be in a wide range: 2800-4500 kJ/kg. in Addition, modular propelling charges, containing as a polymeric surface coating of the powder elements are characterized by high physical and mechanical characteristics.

Modular propelling charges containing water-soluble polymers, can find wide application in various receiver systems 30-mm caliber and above, in particular in the shooting sports and hunting weapons. In the manufacture of durable charges in the form of a block, you also receive the ability to create shots bezgolovogo loader. In mortar shots of b is full charge can be completed as principal, and additional (removable) charges. Block charges have good prospects for the replacement of the regular charges for construction and Assembly of ammo.

Thus, the proposed composition of the block of propellant compared to the prototype has the following advantages:

- the ability to manufacture bulk charge with physico-mechanical, energy and ballistic characteristics in a wide range of values, which leads to the universality of the production of propellant charges to various small systems;

- possibility of regulating the speed of the combustion block charges within wide limits by changing the qualitative and quantitative composition of the charge;

- physiological and ecological safety of operation modular propelling charge, containing a water-soluble polymer is polyvinyl alcohol;

- technological and ecological safety of production modular propelling charges through the use of the solvent of the polymer water;

- economic feasibility of production of modular propelling charges and picking shots on their basis;

- ability and ease of recycling obsolete powders in the composition of the block charges.

On the basis of the present invention by the layout of the single components, you can create different is brassie multiblock charges to the different systems of tube artillery with a wide interval of the tactical-technical characteristics.

1. A propelling charge for unitary cartridges barreled weapons, made in one piece, pressed from the powder grains on the surface which are covered with a polymer coating, characterized in that the polymer coatings are used water-soluble polymers of synthetic or natural origin in the amount of 5-15 wt.%, and the porosity of the block is 5-60%.

2. Propellant charge according to claim 1, characterized in that the block contains an active filler, which apply crushed pyroxylin, ballistic, spherical powders in the proportions and/or waste of these powders in the amount of up to 80 wt.%, and/or blasting explosive in an amount up to 70 wt.%.

3. Propellant charge according to claim 1, characterized in that the unit is loose in the socket.

4. Propellant charge according to claim 1, characterized in that the unit is pressed into the sleeve.

5. Propellant charge according to claim 1, characterized in that the supplementary unit is made up of several pieces.



 

Same patents:

FIELD: weapons and ammunition.

SUBSTANCE: propellant charge for an armour-piercing composite shell comprises a powder charge in a burning cylinder with holes for alignment pins filled with a sealing composition and closed with a cloth tape made of chemical threads with edges at both sides with the ratio of thickness of the belt edge to the thickness of the belt equal to 1.0:1.1. The cloth belt is made of polyamide or polyester monothreads with the value of surface density of the belt within 10-37 g/mm2 and thickness of a polyamide or polyester monothread within the range of 1.7-3.3 g/km (tex).

EFFECT: invention provides for reliability of a sealing unit and stable functioning of a propellant charge.

2 cl, 1 dwg

FIELD: weapons and ammunition.

SUBSTANCE: main ignition charge comprises an extended paper cartridge with a metal base with the ratio of length to diameter equal to 5.5÷6.5, where an igniting cap is installed. In the cartridge there is a part of the igniter charge from a gunpowder with weight of 60-70% of total mass, separated from the igniting cap by membranes from a nitrate film, and two bundles of thin-dome ballistit powder. Between bundles of thin-dome ballistit strip powder there is the second part of the igniter charge from gunpowder in a cloth powder bag, and a wad compensator is installed above the upper half-charge. With the ratio of charge length to the extended cavity of the mine stabiliser equal to 0.75÷0.9 there is also a paper tube installed into the stabiliser tube.

EFFECT: higher reliability of propellant charge operation.

2 cl, 1 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to making charges for small arm cartridges. The charge is made from plasticised pellet powder, consisting of nitrocellulose with nitrogen oxide content of 212.5…214 ml NO/g, 10…14 wt %, nitroglycerine, diphenylamine, ethyl acetate and dinitrotoluene, and has packed density of 0.930…0.998 kg/dm3 and particle size 0.315…0.63 mm, where said particles are phlegmatised from the surface of 4.0…6.0 wt % centralite I, graphitised 0.2…0.3 wt % graphite, with moisture content 0.4…0.9 wt % and ethyl acetate 0.3…0.9 wt %, with the following weight ratio of particle fractions, %: 0.63…0.4 mm not less than 75; 0.40…0.315 not more than 20; smaller than 0.315 mm and not larger than 0.16 mm - not more than 5.

EFFECT: stable ballistic characteristics of the powder charge for a new sporting and hunting PSO 5,5x45 cartridge.

1 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to making charges for small arms and can be used in making charges for a 7.62 mm calibre sporting rifle cartridge. The charge contains pellet powder made from nitrocellulose with nitrogen oxide content 213…214 ml NO/g, carbon and diphenylamine with packed density 0.960…0.990 kg/dm3, and content of centralite I and dinitrotoluene in the grain surface layer is in the range of 3.0…6.0 and 3.0…4.5 wt %, respectively, with respect to weight of the powder, and the surface layer further contains graphite in amount of 0.1…0.3 wt % and ethyl acetate in amount of 0.5…1.2 wt %, with relative moisture content of the powder of 0.3…0.9 wt %, with the following weight ratio of fractions, %: 0,4…0.56 mm - 55…68; 0.56…0.7 mm - 27…40; larger than 0.7 mm and smaller than 0.4 mm - not more than 5.

EFFECT: high stability of ballistic characteristics on the weight of the powder charge, bullet speed, bullet speed spread, explosion pressure in the barrel of the weapon and reduced bullet scatter when shooting at a target.

1 dwg, 1 tbl

FIELD: weapons and ammunition.

SUBSTANCE: charge contains spherical powder made from nitrocellulose with content of nitrogen oxide 209…210.5 ml NO/g, carbon, diphenylamine and ethyl acetate, with apparent density of 0.600…0.850 kg/dm3 and size of 0.4…0.2 mm from particles moderated from surface with 2.0…4.0 wt % dibutyl phthalate and 0.5…1.0 wt % dinitrotoluene, coated with 0.2…0.4 wt % of graphite, with moisture content of 0.2…0.6 wt % and ethyl acetate 0.3…1.2 wt % at the following mass ratio of particle fractions, %: 0.2…0.4 mm - at least 80; less than 0.2 mm and more than 0.4 mm - not more than 20.

EFFECT: increased initial speed of bullet velocity and provision of stable performance of a powder charge.

1 dwg, 1 tbl

FIELD: weapons and ammunition.

SUBSTANCE: charge is made of spherical powder elements containing nitrocellulose with content of nitrogen oxide 213.0…214.0 ml NO/g and 10.5…13.5 wt % nitroglycerine, 0.5…1.1 wt % diphenylamine, with apparent density of 0.930…0.980 kg/dm3, moderated on surface with 4.2…6.2 wt % mollite and 1.3…2.3 wt % dinitrotoluene, coated with 0.1…0.3 wt % graphite, with content of moisture 0.2…0.9 wt % and ethyl acetate 0.1…0.9 wt % at the following mass ratio of fractions, %: 0.63…0.4 - at least 75; 0.4…0.315 - not more than 20; sum of coarse fraction left on grid 0.63 and fine fraction went through grid 0.315 and left on grid 0.16 - not more than 5.

EFFECT: improved stability of performance of spherical powder for charges to a 5,45 mm cartridge.

1 dwg, 1 tbl

FIELD: weapons and ammunition.

SUBSTANCE: charge consists of spherical powder with particle size of 0.2…0.4 mm. Charge is arranged in encapsulated case with a bullet. Charge has bulk density of 0.930…1.120 kg/dm3 of the particles graphitised from surface of 0.1…0.3 wt % of graphite, with moisture content of 0.2…0.8 wt % and ethyl acetate 0.6…0.8 wt % at the following weight ratio of fractions, %: 0.2…0.4 mm - not less than 90; less than 0.2 mm and more than 0.4 mm - not more than 10.

EFFECT: increasing initial bullet flight speed.

1 dwg

FIELD: powder charge for firearm cartridges.

SUBSTANCE: invention can be used for sporting and hunting 30 Carbine cartridges (7,62x33 mm). The powder charge consists of spherical powder of the size of 0,2...0,4 mm. The charge is positioned in a cartridge with an encapsulated bullet. The charge is made of powder elements consisting of nitrocellulose and of nitroglycerine (15...38% of total mass), with a packed density of 0,850...0,980 kg/dm3; of particles moderated from centralite I or centralite II (3,0...9,0% of total mass), graphite (0,2...0,6% of total mass), containing ethyl acetate (0,6...0,8% of total mass) and moisture (0,2...0,8% of total mass), with the following mass ratio of the fractions, %:

0,2...0,4 mm - at least 80 less than 0,2mm and more than 0,4 mm - up to 20.

EFFECT: stable ballistic performance of the powder charge.

1 dwg

FIELD: weapons and ammunition.

SUBSTANCE: charge comprises a batch of tubular powder elements with limit capacity of at least 0.25 of the powder density. The batch is made of two bundles that consist of joined tubular powder elements. The upper bundle is equipped with an igniter fixed on the lower end. The lower bundle is equipped with an igniter also fixed on the lower end. Igniters and a flash extinguisher are placed in separate powder bags along the axis of the bundles. The upper bundle with the igniter is additionally wrapped with a retarder.

EFFECT: minimum dispersion of initial charge speeds is achieved.

6 cl, 3 dwg

Artillery module // 2440549

FIELD: weapons and ammunition.

SUBSTANCE: powder hinge and internal and external burning cover plates are arranged in artillery module in the case with steel tray and burning housing with wall thickness of not less than 1.5 of tray wall thickness in the section. Internal cover plate is equipped with membrane with circular and cross-shaped stress detectors with thickness of 0.3-0.6 of the cover plate thickness. Cylindrical surfaces of the cover plates have an annular gap. Upper cover plate is equipped with a shell with height of not less than 0.09-0.17 of its outer diameter.

EFFECT: increasing the initial missile velocity, reducing gas contamination of fighting compartment, and providing the required combustion stability of powder hinge.

18 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to investigation and analysis of materials using radiation methods and can be used as an explosive substance imitator based on hexogene or octogene. The imitator contains a solid body of any shape made from a mixture of powdered nonahydrate aluminium nitrate in amount of 20…36 wt %, melamine in amount of 40…44 wt %, graphite in amount of 11…15 wt %, saccharose in amount of 9…13 wt % and re-dispersible polyvinyl acetate in amount of 9…11 wt %, and density of the solid body is equal to 1.5…1.7 g/cm3.

EFFECT: preparation of a safe explosive substance imitator based on hexogene or octogene for testing apparatus for detecting explosives.

3 cl

FIELD: chemistry.

SUBSTANCE: invention relates to investigation and analysis of materials with radiation methods and can be used as a nitrogen-containing explosive substance imitator. The imitator contains a solid body of any shape made from a mixture of powdered nonahydrate aluminium nitrate in amount of 29…37 wt %, melamine in amount of 15…21 wt % and graphite in amount of 42…56 wt %, and density of the solid body is equal to 1.4…1.7 g/cm3.

EFFECT: safe imitator of nitrogen-containing explosive substance for testing and calibrating apparatus for detecting explosive substances.

3 cl

FIELD: explosives.

SUBSTANCE: method for production of such imitator includes injection moulding and drying. Injection moulding is carried out from mass produced by means of addition of up to 1 % of ES into magnesia cement in the form of trotyl or cyclonite, or octogene, or pyroxilic powder, or varnish powder, or ballistit powder, or nitroglycerine, or ammonium nitrate, or penthrite. Drying is carried out at room temperature till permanent weight with production of magnesium-inorganic polymer complex compound with explosive substance of the following structure: .

EFFECT: according to tactic-operational requirements, imitator of ES smell produced by this method excels available specimens in practicalness, convenience in use and durability.

2 cl, 2 tbl, 8 ex

FIELD: explosives.

SUBSTANCE: ballistic solid rocket propellant includes combustion modifying agent which consists of lead copper complex of phthalic acid or nickel lead complex of phthalic acid as combustion catalyst, chrome (III) - copper (II) - oxides or dioxides of titanium, or titanium disilicide, or calcium carbonate as combustion stabiliser, technical carbon and 1,2-dibutoxybenzol. Combustion catalyst is included in the propellant in quantity of 1.5-4.0 wt %, combustion stabilising agent 0.4 - 3.0 wt %, technical carbon 0.1 - 1.0 wt %, 1,2-dibutoxybenzol - 0.5 - 2.0 wt %.

EFFECT: low dependence of propellant combustion velocity on pressure, and increased propellant chemical durability.

1 tbl

Composite explosive // 2384551

FIELD: explosives.

SUBSTANCE: there proposed is composite explosive for explosion welding which contains powdered tetranitropentaerythrite (TNE) or HMX, or RDX (30-70 percent by volume) and filler in the form of sodium bicarbonate (the rest).

EFFECT: invention provides quality explosion welding of sheet items or foils due to the fact that there provided are low values of brisance, rate of detonation and critical diametre value, but comparatively high value of fougasse ability at detonation of an explosive.

4 ex, 1 tbl, 4 dwg

FIELD: technological processes.

SUBSTANCE: invention is related to emulsifying compositions for making of water-in-oil emulsions used to produce emulsive explosives. Emulsifying composition for preparation of water-in-oil emulsions contains mixture of reaction product of polyisobutylene succinic or polyisobutylene bissuccinic anhydride with organic mono- or polyamine, ethers of acids and polyatomic alcohols and industrial oil. Ether of acids and polyatomic alcohols is represented by mixture of sorbitan ethers of fatty and tar acids. Ratio of ingredients in emulsifying composition makes as follows, %: reaction product of polyisobutylene succinic or polyisobutylene bissuccinic anhydride with organic mono- or polyamine 20-70; mixture of sorbitan ethers of fatty and tar acids 5-35; industrial oil 3-75.

EFFECT: invention provides for improvement of technological parameters of emulsifying composition production used to manufacture emulsive explosives, and makes it possible to control viscous-temperature properties of composition and expansion of raw materials assortment for its production.

3 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to emulsion explosives. The method of preparing an emulsifier for production of emulsion explosives based on products of condensation of polyisobutylene succinic anhydrides with alkanol amines dissolved in industrial oil involves esterification in two steps. At the first esterification step, alkenyl succinic anhydride is reacted with dimethylethanolamine in the presence of industrial oil and pinene or camphene, obtaining an intermediate product in form of a 50% solution of ether amides in industrial oil. At the second esterification step, while heating and stirring, the obtained product is mixed with industrial oil, glycerine monooleate or glycerin monooleate on polymerised glycerin and TP ethanol amides.

EFFECT: increased emulsion stability due to reduced amount of free acid, partially formed as a result of hydrolysis of alkenyl succinic anhydride.

2 cl

FIELD: explosive materials.

SUBSTANCE: method of explosive material marking includes introduction of marking composition into explosive material. The marling composition contains identifiers whose quantity is equal to that of the technical figures subject to marking. The identifiers are oil-fat-soluble chemical stable in the media with different pH, free radical resistant, chemical resistant to explosive material components, free from surface active agent properties of the first kind, chemical resistant to explosion products and free from toxic properties. Polymethylsiloxane, polyethylsiloxane or their mixture is used as the identifier.

EFFECT: accuracy and reliability of explosive material marking according to different technical parametres.

4 cl, 1 tbl

Explosive // 2358957

FIELD: shooting operations.

SUBSTANCE: explosive contains octogene in quantity of 99.01-99.8 wt % and modifying coating applied to octogene particles in quantity of 0.2-1.0 wt %.

EFFECT: development of modifying coating applied to octogene particles with high adhesive strength.

4 tbl

FIELD: blasting operations.

SUBSTANCE: charge is used as a pulsed power source based on power-generating materials (explosives, rocket mixed solid propellants, pyrotechnic compositions). The charge contains an arbitrary orientation reinforcing element made from a wire with thickness not over 200 micron and uniformly distributed over the charge volume making some 5-80% of the charge volume.

EFFECT: higher charge strength and density, increased explosion power in air.

2 cl, 3 ex, 1 dwg

FIELD: explosives.

SUBSTANCE: proposed water-in-oil-type explosive composition contains ammonium nitrate, mineral oil, water, and emulsifier. The latter is prepared by mixing poly(isobutylenesuccinic anhydride) or poly(isobutylene-bis-succinic anhydride) with product of its interaction with organic mono- or polyamine, adding, to continuously stirred mixture, esters of fatty acids with polyatomic alcohols, then adding Ca, K, Mg, Mo alkylbenzenesulfonate or mixture thereof in the form of 20-70% solution in industrial oil, mixing, and filtering resulting mixture.

EFFECT: reduced price of explosive composition due to reduced content of emulsifier.

1 tbl, 4 ex

Up!