59results about "Single substance explosives" patented technology

Embodiments of the present subject matter provide a compound and material that may be used as a lead-free primary explosive. An embodiment of the present subject matter provides the compound copper(I) nitrotetrazolate. Certain embodiments of the present subject matter provide methods for preparing lead-free primary explosives. The method includes: providing cuprous salt; providing water; providing 5-nitrotetrazolate salt; combining the cuprous salt, water and 5-nitrotetrazolate salt to form a mixture; and heating the mixture. The method may also include providing cuprous chloride and providing sodium 5-nitrotetrazolate. Certain embodiments of the present subject matter also provide methods for preparing copper(I) nitrotetrazolate. The method includes: providing cuprous salt; providing water; providing 5-nitrotetrazolate salt; combining the cuprous salt, water and 5-nitrotetrazolate salt to form a mixture; and heating the mixture. The method may also include providing cuprous chloride and providing sodium 5-nitrotetrazolate.

The invention discloses a preparation method of a hexaazaisowurtzitane crystal. The preparation method of the hexaazaisowurtzitane crystal comprises the following steps of: carrying out wet-crushing onto explosives until the particle dimension is 0.1 micron to 5 microns, centrifuging, washing, freezing and drying the crushed materials; placing the material in the step I to a solvent for carrying out ultrasonic treatment, heating, re-filtering, washing and drying under the standing condition or the stirring condition to obtain a hexaazaisowurtzitane explosive crystal. According to the preparation method of the hexaazaisowurtzitane crystal, the high-quality explosive crystal product, which is prepared by a preparation technology adopting a two-step process including mechanical crushing and solvent thermal-induction growing, is regular in particle shape, jewel-shaped, uniform in particle dimension, smooth in surface, less in internal defects of the crystal, and lower in mechanical sensitivity. Besides, the preparation method of the hexaazaisowurtzitane crystal is simple in process, gentle in reaction conditions, good in reproducibility, high in yield and suitable for large-scale industrial production.

The invention discloses the application of molybdenum trioxide on dynamite preparation, which is as follows: high-power mixed dynamite is prepared from 25 to 35 mass percent of aluminum powder, 50 to 55 mass percent of molybdenum trioxide powder, 10 to 15 mass percent of simple-ingredient dynamite and 2 to 5 mass percent of insensitive agent. The invention also discloses a preparation method of the high-power mixed dynamite. The maximum density, the highest explosion heat and the highest explosion speed of the high-power mixed dynamite prepared by the invention are respectively 1.5g / cm<3>, 4.7 MJ / kg, and 9400 m / s. After explosion, the pollution of the dynamite on the environment is greatly reduced, the dynamite preparation safety is greatly improved, and the prepared dynamite has excellent stability.

The color fireworks flash sheets are produced with nitro guanidine potassium, nitrocellulose, chlorinated paraffin 70, magnesium powder and coloring agent and through adhesion with organic adhesive and balling. It is used mainly in toy rocket, spraying flower and other fireworks product to produce blasting, flashing and sounding effects. It has stable storing performance, low production cost, long flash time and good environment protecting performance. It may be used as the substitute of available flash sheets.

The present invention relates to a method for recrystallizing fine spherical cyclotrimethylenetrinitramine (Research Department Explosive, hereinafter, referred to as “RDX”) particles, and the method for recrystallizing fine spherical RDX particles according to the present invention may include (a) introducing a powder material containing RDX into a container, (b) introducing a dimethylether compressed gas into the container and dissolving the RDX to form a RDX solution, (c) releasing and decompressing the RDX solution into atmospheric pressure to form crystallized RDX particles, and (d) separating and collecting the RDX particles.

The invention relates to a cast charge and application thereof to production of a firework propellant. The cast charge is potassium hydrogen terephthalate prepared by mixing terephthalic acid and potassium hydroxide in water to generate a chemical reaction. The cast charge is applied to production of the firework propellant, wherein the firework propellant is prepared by mixing the following components in percentage by weight: 60-70% of potassium perchlorate, 25-35% of cast charge and 2-5% of adhesive and pelletizing a mixture through a sugar coating machine. During the production of the cast charge disclosed by the invention, raw materials are not directly mixed with a strong oxidant, thus very safe production and transportation of the cast charge are realized; when the cast charge is applied to production of the firework propellant, as long as the cast charge is mixed with the potassium perchlorate and the adhesive before the production and is not mechanically machined and the cast charge is not directly stored and conveyed for a long time, potential safety hazard is greatly reduced; in addition, the usage amount of the firework propellant produced by the cast charge disclosed by the invention is only 6g and is 60% of that of a traditional firework propellant, thus the cost is reduced.

The invention discloses a synthesis method of a high-energy density material, which comprises the following steps: a) preparing [2,2'-di(1,3,4-oxadiazole)]-5,5'-diamine: adding oxalyl dihydrazide and potassium bicarbonate to a solvent, performing stirring, adding cyanogen bromide in batches, performing keeping for 10h-2d, adding water in a reaction, and performing stirring, filtering, water washing and drying; b) preparing [2,2'-di(1,3,4-oxadiazole)]-5,5'-dinitramide: allowing [2,2'-di(1,3,4-oxadiazole)]-5,5'-diamine to generate a nitration reaction in a nitration system to obtain [2,2'-di(1,3,4-oxadiazole)]-5,5'-dinitramide. The invention further provides the high-energy density material. The synthesis method of the high-energy density material is developed by taking oxalyl dihydrazide as a raw material, and is low in cost, mild in reaction and simple to operate.

The invention relates to a novel crystal form NTO single-compound explosive and a preparation method thereof, and belongs to the field of energetic materials. According to the preparation method, NTO is taken as a raw material, and a NTO single-compound explosive with a gamma crystal form is prepared by adopting a heating and cooling method. The method comprises the following steps: adding NTO and a crystal form control agent into a solvent at room temperature, heating to completely dissolve the NTO and the crystal form control agent, slowly cooling to separate out white crystals, and filtering, washing and drying to obtain gamma-NTO crystals. According to the invention, the morphology of the gamma-NTO crystal prepared by the method is closer to a sphere, and the preparation of the composite explosive and the implementation of the safety are more facilitated; the thermal stability of gamma-NTO is higher than that of alpha-NTO, and the mechanical sensitivity and acidity of gamma-NTO are both lower than those of alpha-NTO; the preparation process is simple, the experiment condition is mild, and the production cost is low; and as a high-energy low-sensitivity explosive, the novel crystal form NTO single-compound explosive has a good application prospect.

The present invention provides a method for the preparation of an insensitive high enthalpy explosive Dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) in the presence of N,N-dimethylformamide, N,N-dimethylacetamide, or N-Methyl-2-pyrrolidone as a solvent via a four-step, one-pot reaction route to obtain a final product after four reaction steps. The more dangerous intermediate diazidoglyoxime may be solved by the one-pot method without the need of isolation. Further, the cyclization reaction is carried out in the presence of dropwisely added concentrated sulfuric acid to replace hydrochloric gas so no hydrochloric gas generator is needed to greatly reduce the amount of waste acid so as to effectively reduce the cost by avoiding using hydrochloric gas steel cylinders which require much safety equipment.

The invention discloses a nanometer flaky 1,1-diamido-2,2-binitro ethylene explosive and a preparation method thereof. The preparation method includes the following steps that a 1,1-diamido-2,2-binitro ethylene explosive and surfactant are dissolved in an organic solvent, heated and stirred to be completely dissolved, then cooling is conducted at the speed of 0.5-10 DEG C / min under stirring for crystallization, and through filtering, washing and drying, the nanometer flaky 1,1-diamido-2,2-binitro ethylene explosive can be obtained. The nanometer flaky 1,1-diamido-2,2-binitro ethylene explosive prepared through the method is of an orderly nanometer flaky structure and is uniform in particle morphology, the sheet layer diameter is 1-2 micrometers, the sheet layer thickness is 80-120 nm, the crystal purity of the explosive is larger than 99%, and important application prospects are achieved in the field of booster explosives and the like. The preparation technological process is simple, the preparation period is short, the solvent can be recycled, reaction conditions are moderate, and good safety is achieved.

The present application belongs to the field of energetic compounds, and particularly relates to the use of a perovskite-type compound ABX3 as an energetic material. As a finding of the present application, the structural characteristics of the perovskite type enables the type of compound to be highly stable, thus overcoming the unsafety of an explosive having poor stability in the prior art. Meanwhile, the structural characteristics of the compound, such as rich energetic ligands, as well as the alternately arranged oxidizing energetic anions and reducing organic cations in the space, endow the compound with excellent performance on instantaneously releasing energy at detonation. The resulting three-dimensional structure allows the compound to not only have an energetic material effect but also overcome shortcomings of some existing energetic materials.

The invention relates to a novel high-performance nitrogen-rich metal complex Cu(NTZNO)(NH3)(NH2NO2) and its design method and application and belongs to the crossing field of metal materials, energetic materials and quantum chemistry. Cu as a metal center and nitrogen-rich and oxygen-rich nitro-tetrazolium nitroxide (NTZNO), NH3 and NH2NO2 as high-energy ligands form the complex through a skeleton structure. The design method effectively ensures that the complex has high energy and minimizes the high sensitivity of the metal elements so that compared with the traditional primary explosive, the complex has higher energy and lower sensitivity and can be used as a substitute for the traditional high energy explosive and primary explosive.

A method producing a surfactant from glycerol by converting glycerol, in a first step, to glycidol, polymerizing glycidol to an aliphatic alcohol and finally substituting a hydroxyl group with a substitute anion.

The invention discloses a preparation method for an explosive material nanowire. The method comprises the following steps: A, dissolving dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate into water, and heating the solution until the salt is completely dissolved; B, transferring the solution into a polytetrafluoroethylene bottle, and performing shock chilling by adopting liquid nitrogen until thesolution is completely frozen to a solid state; and C, performing freeze drying on the frozen and solidified solution under vacuum conditions, so as to obtain the explosive material with a nanowire structure. The invention also discloses the explosive material nanowire. The product provided by the invention has a unique nanowire structure, uniform morphology, and an important application prospectin the fields of initiating explosive materials, booster explosive materials and the like used for weapons; and the method provided by the invention has a simple preparation process, good repeatability and mild reaction conditions, and is easy to enlarge.

The invention discloses a damage developing type epoxy glass polymer and a fiber or explosive composite material thereof, and the damage developing type epoxy glass polymer is prepared from the following components in parts by weight: 50-100 parts of epoxy resin A, 10-50 parts of an epoxy curing agent B, 5-40 parts of an epoxy diluent and 0-50 parts of an inorganic filler, or 50-100 parts of epoxy resin C, 10-50 parts of an epoxy curing agent D, 5-40 parts of an epoxy diluent and 0-50 parts of an inorganic filler. The material has the characteristics of releasing deformation stress, self-repairing, disassembling, reprocessing and forming and the like of epoxy glass macromolecules, and can generate macroscopic color changes including green, orange or pink and the like when being faced with different sizes and forms of damages such as scratches, cracks, fracture surfaces or crushing and the like.

The invention provides a polyaniline coated nitro-amine high-energy explosive composite material. The preparation method sequentially comprises the following steps: step 1, dispersing an explosive: adding a high-energy single-compound explosive into an acidic solution of aniline, and stirring to obtain a uniform explosive dispersion liquid; step 2, reacting and coating: dropwise adding an acid solution of ammonium persulfate, and stirring until white particles in the reaction liquid turns into dark green particles, (the reactions are finished); step 3, carrying out solid-liquid separation, andfiltering the reaction solution to obtain a solid product namely the polyaniline-coated high-energy explosive; and step 4, washing and drying the solid product, filtering, and drying to obtain a loose finished product. Polyaniline not only can play a role in protecting the surface of the nitro-amine high-energy explosive and reduce the mechanical sensitivity, but also can significantly reduce theelectrostatic accumulation amount of the nitro-amine high-energy explosive and ensure the safety during transportation, storage and use. The synthesis method is simple, and the synthesized compositematerial is low in sensitivity and has a good application prospect.

According to the NTO crystal provided by the invention, the ratio of the short axis to the long axis of the NTO crystal is 0.9 to 1.5. The NTO crystal provided by the invention has a regular morphology, is particularly spherical, and has higher formability and charge density when being used for mixed explosives, so that the application range of the NTO crystal is further expanded. The preparation method of the NTO crystal provided by the invention comprises the following steps: dissolving NTO in a mixed solvent of dimethyl sulfoxide and water to obtain a saturated solution; the volume ratio of the dimethyl sulfoxide to the water is (0.5-1.75): 1, and the temperature of the saturated solution is 64-76 DEG C; cooling and crystallizing the saturated solution, and separating out the NTO crystal; the cooling rate of the cooling crystallization is 3.0-4.5 DEG C * min <-1 >; the cooling crystallization is accompanied by stirring, and the rotating speed of stirring is 300-800r / min. The spherical NTO crystal is prepared by limiting parameters such as the type of the solvent, the temperature of the saturated solution, the cooling rate and the stirring rate.

The invention discloses an MCHN7 energetic material and a preparation method thereof and an application of the MCHN7 energetic material as an initiating explosive, an explosive and a pyrotechnic composition. The chemical formula of the energetic material is MCHN7, wherein M is selected from at least one of IB group metal elements, IIB group metal elements, VIIB group metal elements and VIII groupmetal elements; the crystal structure of the energetic material belongs to an orthorhombic system, and the space group is P2[1]2[1]2[1]. The energetic material has excellent stability and safety, andis green and environment-friendly. Experimental determination shows that the MCHN7 energetic material has thermal stability at the tempeture of not less than 255 DEG C, the impact sensitivity is 0.8-2.0 J, the friction sensitivity is greater than or equal to 5 N, and the electrostatic spark sensitivity is 2-200 mJ. Compared with an existing commercial initiating explosive, the energetic material disclosed by the invention has the advantages that the explosion heat is 2-4 times that of the existing commercial initiating explosive, the defects of serious lead pollution and insufficient explosionperformance are overcome, and the energetic material has important commercial application value in the field of green high-performance energetic materials.

The invention discloses a 3, 3'-diamino-4, 4'-oxazafurazan multi-stage geode and a preparation method thereof. The 3, 3'-diamino-4, 4'-oxazafurazan multi-stage geode comprises the following steps of dissolving 3, 3'-diamino-4, 4'-oxazafurazan explosive into an organic solvent till the 3, 3'-diamino-4, 4'-oxazafurazan explosive is completely dissolved; enabling an obtained mixture to stand in a constant temperature incubator; enabling the solvent to volatilize; and after the solvent completely volatilizes, carrying out suction filtration, flushing and vacuum drying on the mixture to finally obtain the 3, 3'-diamino-4, 4'-oxazafurazan multi-stage geode. The 3, 3'-diamino-4, 4'-oxazafurazan multi-stage geode disclosed by the invention has the advantages that the impurity content of an explosive product prepared by the preparation method is less, the purity of the explosive product is high, and the 3, 3'-diamino-4, 4'-oxazafurazan multi-stage geode is beneficial for studying crystal habitsof high energy insensitive high explosive 3, 3'-diamino-4, 4'-oxazafurazan multi-stage geode and expanding the application range of the high energy insensitive high explosive 3, 3'-diamino-4, 4'-oxazafurazan multi-stage geode.

The invention discloses a method for synthesizing hexanitrostilbene (HNS), which aims to solve the problems of high quality requirement of liquid bromine, difficulty in weighing and generation of irritating gas in the process of synthesizing hexanitrostilbene from hexanitrobibenzyl. The invention uses hexanitrobibenzyl as raw material, uses mixed solvent as solvent, and prepares hexanitrostilbene under the action of solid dehydrogenation agent. The present invention is mainly used for synthesizing hexanitrostilbene.

The invention discloses a hydrogen-containing metal combustion agent and a preparation method thereof, and belongs to the technical field of solid combustion agents. The combustion agent is composed of three elements of aluminum, magnesium and hydrogen, the phase composition of the combustion agent is aluminum and magnesium hydride, and the molar ratio of aluminum to magnesium hydride is 2-4:1. The preparation method comprises the following steps that firstly, metal aluminum and magnesium with the purity not lower than 99.5% are weighed according to the molar ratio of (2-4):[1 / (1-x)] (x is theburning loss rate of magnesium in the smelting process); secondly, aluminum and magnesium are smelted into alloy through adoption of a smelting method, and the alloy is mechanically smashed into powder with the particle size smaller than 300 meshes; and finally, the alloy powder is subjected to hydrogenation treatment at 350-400 DEG C under the hydrogen pressure of 8 MPa. The hydrogen-containingmetal combustion agent provided by the invention has the technical effects of low ignition temperature, high reaction activity and combustion efficiency, simple preparation process, safety, reliability and low price.

The application provides low shock wave sensitivity 3, 4-dinitrofurazanofuroxan (DNTF) and a preparation method thereof. The method takes a synthetic DNTF crude product as a raw material, and adopts asolvent-nonsolvent method to recrystallize the DNTF crude product so as to prepare the low shock wave sensitivity DNTF. The method comprises the steps of taking a solvent and the DNTF crude product according to a mass ratio of 4 to 1, stirring at a speed of 500r / m and heating, and stirring the DNTF for 20min at the temperature of 80-85 DEG C; adding 1% of a crystal form control agent, stirring for 10min at a speed of 1000r / m at the temperature of 80-85 DEG C, and naturally cooling when the stirring speed is reduced to 800r / m; stirring for 10min at the temperature of 63.5-64 DEG C under the condition of heat preservation; controlling the temperature, increasing the stirring speed to 1000r / m, dripping deionized water into the DNTF at a speed of 0.8ml / min, diluting the DNTF solution, and controlling the stirring time to be 60-90min; stopping stirring, carrying out suction filtration, washing, and drying to obtain the low shock wave sensitivity DNTF crystals. The DNTF crystals prepared byusing the recrystallization process method overcome the defect that in the background technology, the DNTF is higher in shock wave sensitivity.

The invention belongs to the field of compounds, and particularly relates to a series of ethylene diammonium ternary crystalline compounds, a preparation method of the ethylene diammonium ternary crystalline compounds and application of the ethylene diammonium ternary crystalline compounds as energetic materials. The crystalline compound comprises a crystalline compound with the general formula of ABX4 and also comprises a crystalline compound with the general formula of B2A'X5, wherein B can be a saturated fatty diammonium cation, such as an ethylene diammonium cation, for example.

The invention belongs to the field of compounds, and particularly relates to a crystalline compound based on hydroxylammonium and / or ion assembly and a solid solution thereof, a preparation method thereof and application thereof as an energetic material, and the crystalline compound is found to have excellent energetic property and practicability when being used as the energetic material. Compared with the prior art such as ammonium ions, the compound has the advantages that the hydroxyl ammonium and the ions have higher enthalpy of formation, and more hydrogen bonds are expected to be formed in crystals for interaction, or higher binding force is favorably obtained, so that the enthalpy of formation and the crystal density of the compound are simultaneously improved. Therefore, the inventor constructs a metal-free energetic material by using the material so as to further improve the energetic characteristic. The at least one compound is high in theoretical explosion heat and volume energy density, excellent in detonation performance, good in safety performance, high in theoretical specific impulse value, free of volatility and capable of being stored for a long time without decomposition; crystallinity is single at room temperature, the raw materials are cheap and easy to obtain, the production process is simple, and safe and large-scale preparation can be realized.

The invention relates to the field of reutilization and manufacture of waste single-base propellants, in particular to a recyclable method for waste single-base propellants. Waste single-base medicines are flammable and explosive. At present, methods such as burial and burning are often used for destruction, which restricts the recycling of waste propellants. The present invention controllably obtains nitrocellulose with different nitrogen content by reducing the single-base propellant mainly composed of nitrocellulose, and uses the method for recycling waste single-base propellants. The invention relates to (1) the reduction process of hydrazine hydrate to the single-base propellant; (2) the control of the nitrogen content of nitrocellulose in the single-base propellant by the reduction process; (3) the reduction process of thiourea dioxide to the nitrocellulose in the single-base propellant . Through the reduction treatment of the nitrate ester group in the single-base propellant, the nitrogen content of the nitrocellulose is controlled, and the waste single-base medicine is swollen, reduced, and regenerated to recycle the waste single-base medicine and broaden the use of the waste single-base medicine. application field.

The invention discloses a high explosive with high thermal stability. The high explosive is a compound 1-amino-1-hydrazino-2-nitro-2-tetrazolyl ethylene. The invention also discloses a preparation method of the 1-amino-1-hydrazino-2-nitro-2-tetrazolyl ethylene, and the preparation method comprises the following steps: firstly, enabling an initial raw material 1, 1-diamino-2-nitro-2-tetrazolyl ethylene to react with hydrazine hydrate, and then reacting with hydrochloric acid to obtain the 1-amino-1-hydrazino-2-nitro-2-tetrazolyl ethylene. The compound has high gas production rate and enthalpy of formation, and the preparation method is simple, green, pollution-free and good in stability, so that the compound is an energetic material with potential.

The invention relates to an NTO dissociation inhibitor and application thereof, belonging to the field of energetic materials. The invention aims to solve the problems of low yield and large pollution in the existing method. The present invention firstly prepares the NTO dissociation inhibitor by using citric acid, malic acid, glycolic acid, tartaric acid, succinic acid, ethanol and propionic acid as raw materials, then mixes the deionized water and the NTO dissociation inhibitor evenly, and then adds NTO. After heating up, the binder system is added dropwise, and the NTO-based mixed explosive molding powder is obtained after stirring, dissolving, cooling and filtering. The waste liquid can be added to the water suspension for recycling. The NTO-based mixed explosive molding powder prepared by the invention is dense and smooth, has a stable crystal form, and has little difference in mechanical sensitivity from the molding powder obtained by the prior method. Compared with the existing method, the invention can greatly increase the yield of NTO-based mixed explosive molding powder prepared by the water suspension method, and can reduce the content of NTO in the waste liquid and reduce the pollution to the environment. At the same time, the invention has simple process, mild experimental conditions, low production cost and easy realization of large-scale production.