145results about How to "Improve detonation performance" patented technology

The invention provides a special composite oil phase for an emulsion explosive and a preparation method thereof, which belong to the technical field of explosive composition. The composite oil phase comprises Span-80, soybean lecithin, vaseline, a microcrystalline wax, a paraffin wax and a composite wax, wherein during producing the emulsion explosive, an emulsion and a blending wax are melted after being mixed or mixed after being melted according to a mass ratio of 1:2 so as to obtain the special composite oil phase for the emulsion explosive. By using the composite oil phase provided by the invention, the problems of low performance, over-quickness for damping detonation capacity as well as short storage period of the traditional emulsion explosive are solved; and the special composite oil phase for the emulsion explosive, provided by the invention, can be used for producing the special composite oil phase materials for the emulsion explosive.

The invention discloses preparation of skin explosive and an explosion lamination method of a texture interface. A base plate with a certain texture structure is arranged on the surface; an outwards-protruding or flat covering plate is pressed into a concave part of the base plate under the action of the skin explosive or other explosion energy; a convex part of a base plate material is sunk into a concave part of the covering plate, so that the tight combination is realized. The skin explosive has the characteristics of stable detonation performance and good viscoelasticity, stability, storage performance and the like, and can be prepared into rolls in advance to be stored, so that explosive distribution time is shortened and the continuous production of compounding metal boards is convenient to realize; the skin explosive can be compounded with metal materials, namely plates, rods, pipes and the like. A texture interface composite plate is subjected to the explosion lamination by adopting a manner of combining physical extruding deformation with a metallurgical bonding phase, and the physical and chemical properties of sheet materials on the two sides of a combining interface are not changed; the explosive amount of a unit area is small and the energy utilization rate is high. The explosion lamination method of the texture interface can be applied to the production of metal plates and thin plates, which have greater physical property difference, such as melting points.

The invention relates to a novel emulsifier for emulsion explosives, which is product of reaction of PIBSA (polyisobutylene succinic anhydride) and triethanolamine. The method has the advantages that no catalyst is needed for reaction, changes in the reaction acid value can be followed during the reaction process, and the ending of reaction can be determined according to the acid value. The emulsifier synthesized in the method has high emulsion capacity, and the prepared emulsion explosive has high stability for storage and excellent explosive performance. The emulsifier can also be used as adispersing agent in lubricants to effectively disperse oil sludge.

The invention discloses an MY type colloid emulsified civil explosive which comprises the following raw materials in percentage by weight: 35%-45% of ammonium nitrate, 6.5%-7.5% of sodium nitrate, 6%-10% of potassium nitrate, 15%-16% of flame inhibitors, 1.5% of urea, 3.5%-4% of emulsifying agents, 10% of water, 6%-6.3% of oil phases, 1.6%-1.8% of foaming agents, 0.15% of foaming promoters, 4.2%-4.4% of expanded perlite, 0.5% of mixed rare earth and 2.5%-6.5% of titanium hydride. The preparation process of the emulsified explosive comprises the steps of water phase preparation, oil phase preparation, emulsification, sensitization and charging. The MY type colloid emulsified civil explosive disclosed by the invention ensures the safety of the emulsified explosive, enhances the explosiveness and detonation sensitivity of the emulsified explosive and has high storage stability.

The invention discloses a preparation method of a benzotrifuroxan (BTF) and trinitrotoluene (TNT) cocrystallized explosive. The preparation method comprises the following steps of: (1) preparation of BTF-TNT saturated solution, namely, adding sufficient quantity of BTF to a crystallization solvent, raising the temperature to 20-50 DEG C, dissolving BTF and filtering the solution to obtain the BTF saturated solution; and adding sufficient quantity of TNT to the BTF saturated solution to be dissolved and filtering the solution to obtain the BTF-TNT mixed saturated solution; and (2) preparation of the BTF-TNT cocrystallized explosive: putting the BTF-TNT mixed saturated solution into a beaker, then standing in a constant temperature incubator, evaporating the solvent and drying the product, thus obtaining the BTF-TNT cocrystallized explosive. The preparation method has the beneficial effects that the prepared BTF-TNT cocrystallized explosive has good safety and detonation property and excellent free-flowing property, can serve as the component of explosives, gunpowder and propellants and has better application prospect in high-energy insensitive ammunitions; and the preparation method has the advantages of simple process flow, convenience in operation, mild reaction conditions, good safety and high product quality.

The invention relates to a field vehicle-made emulsion explosive suitable for underwater blasting, belonging to a technical field for preparing the emulsion explosive. The emulsion explosive is mainly prepared by applying water-phase materials of ammonium nitrate, sodium nitrate and perchlorate water; oil-phase materials of emulsifier and diesel oil; density modifier of glass or plastic hollow bead; and dry powder of coarse aluminum powder and fine aluminum powder. Compared with traditional emulsion explosive, the field vehicle-made emulsion explosive of the invention has the advantages of high detonation velocity, big power and good water-resistant performance; the emulsion explosive is beneficial to solve the problem that the existing emulsion explosive is unsuitable for underwater blasting; the emulsion explosive has high application value in a large-scale underwater blasting project.

The invention discloses novel sensitization bubble carrier colloidal emulsion explosive. The colloidal emulsion explosive comprises the following components: inorganic oxidizer salt, water, a compound oil phase, an emulgator, a compound flame inhibitor, a sensitizer, a foaming agent and a foaming accelerant, wherein the inorganic oxidizer salt is a mixture of ammonium nitrate, sodium nitrate and urea. The invention also designs a preparation method of the novel sensitization bubble carrier colloidal emulsion explosive. The preparation method comprises the following steps: firstly preparing a water phase, adding an oil phase to the water phase for mixing, then sequentially emulsifying and sensitizing, and finally filling to obtain a finished product. The novel sensitization bubble carrier colloidal emulsion explosive is good in water resistance, excellent in explosive performance, proper in sensitivity, suitable for blasting of various environments, simple and convenient in production process, low in affect on environment and low in cost.

The present invention provides the preparation process of one kind of emulsifier for powdered emulsified explosive. The polymer emulsifier with excellent emulsifying performance and high emulsifying stability is prepared through the reaction between alkyl carboxylic acid or carboxylic anhydride and the mixture of several kinds of alcohol amine compounds. The powdered emulsified explosive prepared with the emulsifier has high explosion performance, high stability and long storing period.

The invention relates to an emulsifying agent mainly used for emulsion explosive and a preparation method of the emulsifying agent. The preparation method comprises the following steps: esterifying and modifying polyisobutene succinate by using boric acid, and then blocking by adopting a Span emulsifying agent and a fatty alcohol compound, thus obtaining the emulsifying agent. The emulsifying agent has good anti-static property and emulsifying property, is capable of effectively reducing the diameters of emulsifying molecules and improving the dispersibility of an emulsion, the emulsifying efficiency and the storage stability of the emulsion explosive.

The invention relates to a preparation method of a high-nitrogen modified ammonium nitrate explosive crystal doped with a 2D conjugated structure. The method comprises the following steps: a high-nitrogen amino compound and an organic solvent with high boiling point are mixed, then an ammonium nitrate explosive and an aldehyde compound are added, and a 2D conjugated structure material is obtained;the ammonium nitrate explosive grows on the 2D conjugated structure, and the insensitively modified ammonium nitrate explosive crystal is obtained. The method is simpler, structure and performance ofthe final material can be controlled precisely through reaction conditions and doping amount, product yield is high, cost of raw materials is lower, and industrial production is easy to realize. Further, HMX is higher in energy, so that energy density cannot be reduced substantially by doping of a small quantity of a high-nitrogen 2D material, instead, crystal rigidity and molecular organized bulk density are increased, and detonation performance of the explosive crystal is improved.

The present invention discloses a preparation method for a hexanitrohexaazaisowurtzitane and m-dinitrobenzene co-crystallized explosive, wherein a crystallization solvent is adopted to prepare a hexanitrohexaazaisowurtzitane and m-dinitrobenzene saturated solution, and a constant temperature incubator is adopted to perform solvent evaporation and crystallization to obtain the hexanitrohexaazaisowurtzitane and m-dinitrobenzene co-crystallized explosive. According to the present invention, crystal density of the hexanitrohexaazaisowurtzitane and m-dinitrobenzene (CL-20-DNB) co-crystallized explosive is significantly increased by 19.6% compared with crystal density of DNB, detonation velocity and detonation pressure of the CL-20-DNB co-crystallized explosive are respectively increased by 46.2% and 147.5% compared to detonation velocity and detonation pressure of DNB, and the CL-20-DNB co-crystallized explosive has characteristics of a good detonation performance and high safety performance, and can be used for preparing low sensitivity ammunition.

The invention discloses a preparation method of a benzotrifuroxan (BTF) and 2,4-dinitroanisole (DNAN) cocrystallized explosive. The preparation method comprises the following steps of: (1) preparation of BTF-DNAN saturated solution, namely, adding sufficient quantity of BTF to a crystallization solvent at 20-50 DEG C, dissolving BTF and filtering the solution to obtain the BTF saturated solution; and adding DNAN to the BTF saturated solution to be dissolved and filtering the solution to obtain the BTF-DNAN mixed saturated solution; and (2) preparation of the BTF-DNAN cocrystallized explosive: putting the BTF-DNAN mixed saturated solution into a beaker, then standing in a constant temperature incubator, evaporating the solvent and drying the product, thus obtaining the BTF-DNAN cocrystallized explosive. The preparation method has the beneficial effects that the prepared BTF-DNAN cocrystallized explosive obviously reduces the sensitivity of BTF, obviously improves the energy of DNAN, has excellent detonation property, can serve as a novel insensitive detonating agent and has better application prospect in the insensitive ammunitions resistant to high overload and the like; and the preparation method has the advantages of simple process flow, convenience in operation, mild reaction conditions, good safety and high product quality.

The invention relates to a smooth blasting spaced loading joint-cutting pipe composed of loading parts and spacing parts. The loading parts and the spacing parts are sequentially and alternately arranged along the pipe length. The loading parts comprise cartridge containing grooves and cartridge covers fixed to the cartridge containing grooves in a free dismounting manner, and joints are arranged at the connecting positions of the cartridge containing grooves and the cartridge covers to form cut joints. A limiting component used for limiting cartridges to move in the pipe axial direction is arranged in the joint-cutting pipe. The spacing parts are of a pipe body structure, and the joint-cutting pipe is jointly formed by the spacing parts and the loading parts.

The invention discloses a waste emulsified explosive and method for reclaiming matrix, which consists of rolling 75-92% of ammonium nitrate, charging 0.05-0.50 of modifier, 2-19% of waste emulsion type explosive and base material, rolling again to remove moisture, charging 1-55 of compound oil phase material, rolling the mixture, charging charging 2-11% of TNT and 2-6% of dried wood powder, rolling and packaging.

The present invention relates to a coal mine permitted ammonium TNT oil explosive and its production method. Its composition and contents are: ammonium nitrate, wood powder, oil phase, TNT 1.5-2.5%, compound flame-elimianting ageng 10-20% and surfactant 0.1-1.0%, in which the flame-elimianting agent is formed from one or several kinds of three groups of compounds of alkali metal or alkaline earth metal nitrate, ammonium halide salt and alkali metal or alkaline earth metal halide, and its surfactant is formed from one or several kinds of alkylamine salt whose carbon chain is 12-18, sodium lauryl sulfate, stearic acid and dodecyl alcohol acyl phosphate, etc.

The invention relates to an emulsion explosive with high power and strong hardness, which is characterized in that the emulsion explosive is prepared by the steps of crushing ammonium nitrate according to proportion by a crusher, adding the crushed ammonium nitrate and sodium nitrate into a melting tank filled with water according to proportion by a inclined spiral machine, stirring and heating to 115-125DEG C to prepare aqueous solution; stirring and heating semi-refined paraffin, Vaseline, crystallite wax, stearic acid and emulsifier according to proportion to 110-120DEG C to prepare oil phase solution; conveying the aqueous solution and the oil phase solution according to ratio of 94:6 to a emulsifying machine by a screw pump, making the aqueous solution excellently wrapped in the oil phase solution to form a water-in-oil type emulsification matrix, cooling to 43-57DEG C by steel strip, adding a sensitizing agent according to proportion, uniformly mixing, packaging and storing. The invention has advantages of hard state, high explosion power, long storage life, low production cost and high production safety.

The invention relates to the technical field of explosive preparation and aims to provide a puffing ammonium nitrate explosive and a preparation method thereof. The puffing ammonium nitrate explosive is prepared from the following raw materials in parts by weight: 99.0-99.5 parts of ammonium nitrate, 0.5-1.0 part of urea, 0.1-0.5 part of diesel oil, 0.1-0.2 part of swelling agent and 3.0-5.0 parts of wood powder. According to the method, the urea is used as an oxidizing agent for replacing sodium nitrate and preparing the puffing ammonium nitrate explosive. The explosive preparation disclosed by the invention has the beneficial effects that the urea is used as the oxidizing agent and is used for replacing the ammonium nitrate in the explosive, so that the density and detonation velocity of the explosive can be increased, the explosion propagation performance is promoted, and meanwhile, the content of the toxic and harmful gas generated by the explosive explosion is reduced.

The invention discloses a colloidal emulsion explosive for high detonation velocity deep water blasting, which comprises the following components: main oxidant, auxiliary oxidant, reducing agent, water, additive, emulsifier, sensitizer, density regulator, crystal shape modifier, Stabilizer, foaming agent, sensitization aid, flame suppressant, adhesive, the explosive has high detonation velocity, good detonation performance, high safety, low production cost, no poison and no pollution.

The invention discloses a preparation method for a benzotrifuroxan and m-dinitrobenzene eutectic explosive. The preparation method comprises the following steps: firstly, preparing a benzotrifuroxan and m-dinitrobenzene saturated solution through a crystallization solvent; secondly, evaporating the solvent of the saturated solution by a constant temperature incubator and crystallizing to form the benzotrifuroxan and m-dinitrobenzene eutectic explosive. The benzotrifuroxan and m-dinitrobenzene eutectic explosive has the benefits of excellent safety, good detonation performance and good free-running property, can serve as a component of a novel booster explosive, has a good application prospect in high-energy low-sensitive ammunitions, and is simple and stable in preparation method and process flow, convenient to operate, moderate in reaction conditions, good in safety and high in quality.

The invention discloses a liquid-phase charging warhead shell which does not use a balancing weight, does not change the charging amount and can adjust the mass and mass center. A check block is located in the middle of the interior of a first cylinder of the warhead shell, a sixth inner cylindrical surface of the check block is connected with a second outer cylindrical surface of an annular interlayer in a sealed mode, a sixth outer cylindrical surface of the check block is in sealed connection with a first inner cylindrical surface of the warhead shell, and a closed space formed by the firstinner cylindrical surface of the warhead shell, a first right end concentric circle plane of the warhead shell and the second outer cylindrical surface of the annular interlayer is divided into two independent spaces by the check block. The annular interlayer is added into the liquid-phase charging warhead shell, compressed energetic gas fuel is added into the annular interlayer, the mass of theenergetic gas fuel is adjusted by adjusting the density of the energetic gas fuel, the mass error of a warhead is made up, and the mass and the mass center of the warhead are both within the requiredrange. The energetic gas fuel participates in throwing to form an active cloud cluster, and the detonation effect of the warhead is improved.

The invention belongs to the technical field of compound preparation, and discloses a preparation method of melt-cast explosive 2, 3, 4-trifluoro-1, 5 dinitrobenzene. The preparation method includes the steps: adding nitrate or nitric acid into 95-98% concentrated sulfuric acid in a low-temperature stirred manner; adding 2, 3, 4-trifluoronitrobenzene, and continuing to stirring mixture to completely react; pouring reacted mixture into ice water, separating out precipitates, and filtering, washing and drying the precipitates to obtain the 2, 3, 4-trifluoro-1, 5 dinitrobenzene. Comprised with TNT, the prepared 2, 3, 4-trifluoro-1, 5 dinitrobenzene has better detonation performance and higher density, materials used by the method are safe, devices needed by the method are simple, the methodis simple and easy, yield and purity are high, and the dinitrobenzene is easily purified and re-crystallized.

The invention discloses a method for designing and controlling the microstructure of an explosive based on supramolecular assembly and disassembly. The method comprises the following steps of: forming an energetic supramolecular cocrystal system through supramolecular self-assembly with energetic materials as host molecules and guest molecules; disassembling the guest molecules in the supramolecular cocrystal system under the action of an external force to obtain an energetic material with a special microstructure; and completing the design and control of the explosive microstructure. The method provided by the invention can design the microstructure of the energetic material from a molecular level, thereby realizing the controllable molecular transport and operation of the energetic material supramolecular system. The control of the inter-molecule action force from a micro level has influence on the change of a larger microstructure. The detonation performance and combustion performance of the obtained energetic material with the special microstructure are improved.

The invention discloses a preparation method of a 2,4,6-triamino-5-nitropyrimidine-1,3-dioxide and nitric acid self-assembled energetic crystal material, comprising the following steps: (1) preparinga saturated aqueous solution of 2,4,6-triamino-5-nitropyrimidine-1,3-dioxide; (2) putting the saturated aqueous solution of 2,4,6-triamino-5-nitropyrimidine-1,3-dioxide in a beaker, then standing in aconstant temperature incubator, evaporating a solvent, and carrying out formation of crystal nuclei, crystal growth, crystal formation, filtration and drying in sequence to obtain 2,4,6-triamino-5-nitropyrimidine-1,3-dioxide and nitric acid self-assembled energetic crystal. The invention innovatively provides a 2,4,6-triamino-5-nitropyrimidine-1,3-dioxide and nitric acid self-assembled energeticcrystal material.

The invention discloses a synthesis method of a nitropyrazole energetic compound, which comprises the following steps: by taking 4-chloropyrazole as a raw material, carrying out nitration, ammonification and oxidation to prepare an important intermediate trinitropyrazole, and reacting the trinitropyrazole with bromoacetone for nitration to obtain the nitropyrazole energetic compound, thereby effectively lowering the synthesis cost and enhancing the yield. The invention further discloses the nitropyrazole energetic compound obtained on the basis of the method, and the energetic compound is high in oxygen content and theoretical energy and can serve as an energetic material to be applied to the fields of explosives, propellants, initiating explosive devices and the like.

The invention discloses a preparation method of an MTNP / TNAZ eutectic mixture. The preparation method comprises the following steps: (1) adding MTNP and TNAZ into an organic solvent to prepare a solution, wherein the molar ratio of MTNP to TNAZ is 1-3 : 1-3; (2) controlling the flow rate by using an injector, slowly dropwise adding the prepared solution into an anti-solvent, and continuously performing stirring in the process. According to the invention, a solvent anti-solvent method is adopted, experimental operation can be conducted at the room temperature, the link that a water area or an oil bath is used for heating and temperature rising in the melting process of a traditional melting method is effectively avoided, and the safety and convenience of an experiment are greatly improved;in addition, the eutectic prepared by using the solvent anti-solvent method is higher in quality, more uniform in mixing and very stable in performance, and the defect that different batches of eutectic prepared by using a traditional melting method are different in performance is completely avoided, so the proportion of the obtained lowest eutectic is more accurate.

The invention relates to a preparation method and property of a high-energy insensitive explosive 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole diammonium salt structure, and belongs to the technical fieldof energetic materials. The synthesis method comprises the following steps: heating and dissolving 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole into water, adding silver nitrate with molar equivalent of 2,reacting for 1 hour under a dark condition and at a room temperature, filtering to obtain yellow solid, washing the solid with cold water for twice, and drying to obtain 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole silver salt; and adding the synthesized silver salt into an ammonium chloride aqueous solution with molar equivalent of 2, performing stirring reaction at 80 DEG C for 4 hours, filtering out precipitate after reaction, evaporating the filtrate to dryness, and recrystallizing the obtained solid with a small amount of water to obtain the corresponding product 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole diammonium salt. The synthesis method is simple, stable in properties and easy in amplified preparation. According to the synthesized energetic compound, the decomposition temperature is248 DEG C, the density is 1.89 g / cm<3>, the detonation velocity is calculated to be 9071 m / s, and the detonation pressure is 32.9 GPa. The detonation performance and HMX are equivalent and insensitive, and the explosive is a novel high-energy insensitive explosive with application potentiality.

The invention provides a preparation method and performance calculation for a 2-(dinitromethyl)-3-nitro-1,3-diazacyclo-pent-1-ene ionic salt containing energy, which belongs to the technical field of energy materials. A synthetic method for the 2-(dinitromethyl)-3-nitro-1,3-diazacyclo-pent-1-ene ionic salt comprises the following steps: dissolving 2-(dinitromethylene)-1-nitro-1,3-diazacyclopentane in methanol to obtain a yellow clear liquid; adding a cationic compound or a methanol solution thereof with an amount equivalent to one molar Eq; and subjecting an obtained precipitate to filtration, washing and drying to obtain a target product. The synthetic method provided by the invention is simple and has mild conditions and high yield; a pure product can be prepared without complex purifying of the target product; and industrialization of the synthetic method is easy. 8 salts prepared in the invention have density in a range of 1.64 to 1.79 g / cm<3>, detonation velocity in a range of 7949 to 9004 m / s, detonation pressure of 25.2 to 35.5 GPa and a degree of percussion sensitivity in a range of 5.5 to 13 J, and detonation performances of a part of the salts are better than those of RDX. The ionic salt containing energy can be used as a substitute for a nitramine explosive, e.g., RDX.