59results about "Single substance explosives" patented technology

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 discloses a refining method of a hexanitrohexaaza-isowurtzitane based subject-object explosive crystal. The refining method comprises the following steps: A, dissolving a raw material CL-20 into a liquid medium to obtain a CL-20 solution with the concentration of 5 weight percent to 45 weight percent; B, sucking no less than 10ml of the CL-20 solution by utilizing an injector with aflat-end needle head; C, continuously introducing small-molecule gas into a cavity with an inlet and an outlet to form stable flowing airflow; controlling the temperature of the cavity to 20 DEG C to80 DEG C; D, injecting the sucked CL-20 solution in step B into the cavity with the flowing airflow in step C through the needle head of the injector to rapidly co-crystallize the CL-20 and a gas small molecule, so as to form the subject-object explosive crystal which has an ultrafine grain size and a unit cell internally embedded with the gas small molecule. The superfine subject-object explosivecrystal prepared by the refining method has relatively good particle morphology, the average grain diameter is about 2mu m and the thermal stability is good.

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.

A novel cyclotetraphosphazene compound, 1,1-diamino-3,3,5,5,7,7-hexaazidocyclotetraphosphazene, is disclosed which has application as an energetic compound and percussion primer. Also disclosed is a method of preparing the compound.

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 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 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 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.