10results about "Nitrated explosive compositions" patented technology

The invention discloses a composite energetic material and a preparation method and application thereof, the composite energetic material provided by the invention is a composite energetic material of ammonium salt and FOX-7, and the ammonium salt comprises one or more of ammonium chloride, ammonium bromide, ammonium dihydrogen sulfate and ammonium sulfate. By constructing a composite system, the high-temperature decomposition peak temperature of the FOX-7 can be increased, the apparent thermal activation energy can be increased, low-temperature decomposition can be inhibited, and the thermal stability of the FOX-7 can be remarkably improved. Compared with complex processes (such as electrostatic spraying, ultrasonic-assisted precipitation-spray drying and the like) in the prior art, the composite energetic material provided by the invention can be realized only by mixing and grinding, and the thermal stability of FOX-7 is remarkably improved by constructing a composite system.

The present invention provides an explosive composition containing at least one explosive and at least one heteroatom compound, the heteroatom compound including at least one type of heteroatom selected from the group consisting of B, P, Si, S, Cr, Sn, Al, Ge, Li, Na, K, Cs, Mg, Ca, Sr, Ba, Ti, Zr, V, Nb, Ta, Mo, W, Mn, Ni, Cu, Ag, Cd, Hg, Ga, In, Tl, As, Sb, Bi, Se, Te, Co, Xe, F, Y, and lanthanoids.

The application discloses an energetic metal complex and a synthesis method thereof, and the method is characterized by the molar ratio of 3-aminomethyl-4,5-diamino-1,2,4-triazole, rubidium nitrate and nitric acid being 1:1:1-6, after the feeding is completed, the reaction system is heated to 25-100 DEG C to react, and the reaction time is 0.5-4 hours. After the reaction is completed, the reaction system is cooled to room temperature, filtered, washed and dried to obtain the energetic metal complex [TATT][Rb](NO3)3. The triazol ring with high nitrogen content is selected as a basic skeleton, and the metal complex is obtained by further reacting with the rubidium nitrate and the nitric acid, the single crystal density of the metal complex at normal temperature reaches 2.078 g / cm 3 , the thermal stability reaches 230 DEG C, the electronic density is as high as 4.6419*10 21 / m 3 , the electronic temperature reaches 0.58683 eV, and the metal complex has a great application prospect in the direction of plasma explosives.

The invention belongs to the field of production and manufacturing of energetic materials for fireworks and crackers, and particularly relates to a preparation method of a nitrocotton-based pyrotechnic composition for fireworks and crackers. The preparation method comprises the following steps: sequentially adding water, nitrocotton, a stabilizing agent and ethyl acetate into a reaction kettle provided with a heating and stirring device, then adding protective glue, continuously stirring, adding a sodium sulfate solution into the reaction kettle, dehydrating, adding microcrystalline wax / paraffin into the reaction kettle after the particle morphology is stable, and continuously stirring; melting microcrystalline wax / paraffin under the stirring action, and uniformly coating the surfaces of the nitrocotton particles with the microcrystalline wax / paraffin to form a layer of hydrophobic protective film, so as to obtain a semi-finished product; washing with warm water to remove residual sodium sulfate, protective glue and a small amount of ethyl acetate; and drying the washed product at the temperature of lower than 50 DEG C to obtain a final gunpowder particle product. According to the method, the spherical and dense nitrocotton-based pyrotechnic composition particles with good surface coating can be prepared, and the free-running property, the combustion consistency and the moisture absorption resistance of the product are effectively improved.

The application provides a TNBA cast explosive and a preparation method thereof, and belongs to the technical field of cast explosive preparation. The TNBA cast explosive is prepared according to the mass percentage of 50.6-55.2% of a liquid carrier, 4.4-4.8% of a fluxing agent and 40-45% of a solid filler. The TNBA cast explosive prepared by the application has the following advantages: the liquid carrier and the fluxing agent have high density, low volatility, low toxicity, low sensitivity and good formability, and no shrinkage hole and crack after pouring; the solid filler has the characteristics of high energy, low sensitivity, high density and high explosion heat; the raw material cost is low, the preparation process is simple, and the explosive can be produced on a large scale; compared with the existing explosives, the cast explosive has high oxygen balance, can generate more heat, has high density, detonation velocity, explosion heat and explosion pressure, and low impact sensitivity, and has higher performance than ordinary explosives.

The invention discloses a method for preparing a microporous single-base flat-bulb explosive by adopting a microchannel reactor. The method comprises the following steps: dissolving nitrocotton in a solvent, emulsifying and foaming a solution as a dispersion phase, and adding a dispersing agent into water as a continuous phase; a cross-shaped micro-channel reactor is adopted, a dispersed phase is injected into a micro-channel through a main channel, and a continuous phase is injected into the micro-channel through double channels; the dispersion phase forms liquid drops under the action of shearing force of the continuous phase, a spherical structure is formed under the action of surface tension, the liquid drops are subjected to flooding and curing forming in a channel, and further curing and drying are carried out under the stirring condition in a collecting device to prepare the microporous single-base flat-bulb explosive. The microporous flat-bulb powder prepared by the method disclosed by the invention is uniform in particle size and controllable in component form, and has the advantages of controllable flat-bulb powder density, simple device, high efficiency, good stability, good repeatability and the like.

The invention discloses a synthesis method of tetrazine high-nitrogen compounds and salts thereof, and belongs to the technical field of organic synthesis.The synthesis method of the tetrazine high-nitrogen compounds comprises the following steps that 3, 6-bis-3, 5-dimethylpyrazole-1, 2, 4, 5-tetrazine and a nucleophilic reagent are mixed and subjected to a heating and stirring reaction, after the reaction is finished, suction filtration, washing and drying are conducted, and the tetrazine high-nitrogen compounds are obtained. The tetrazine high nitrogen compound is obtained. The method comprises the following steps: mixing a tetrazine high-nitrogen compound with a nitrogen-containing reaction ligand in a solvent for reaction, and after the reaction is finished, carrying out solid-liquid separation and drying to obtain the ionic salt of the tetrazine high-nitrogen compound. The obtained compound is good in thermal stability and low in mechanical sensitivity, the specific impulse value of a solid propellant can be increased to a certain degree, the characteristic signal of the propellant can be reduced, and the research and application field of the asymmetric tetrazine energetic compound is further expanded.

The invention provides a dinitramide ammonium-based liquid propellant combustion simulation data labeling method and system based on digital twinning, and the method comprises the steps: constructing a labeling correlation map through combing and refining combustion physical rules and multi-batch historical labeling data of a dinitramide ammonium-based liquid propellant in different combustion environments; the method comprises the following steps: comparing new combustion simulation data generated by a digital twin system through iterative simulation with an annotation association map, extracting a covering combustion state description item and multiplexing a corresponding annotation label, synchronously separating a new combustion state description item which is not matched with the annotation association map, performing targeted annotation to obtain a newly added annotation label, and performing annotation on the newly added annotation label to obtain a new combustion state description item; and updating a combustion state description item-labeling label association corresponding record of the labeling association map, performing adaptive calibration on all combustion simulation historical labeling data generated in an early stage, updating original labeling label contents, and synchronously updating a combustion simulation data labeling reference library of the digital twin system. According to the method, the integrating degree of simulation and labeling can be improved.

The invention discloses a treatment device for separating liquid nitrate in wastewater. The treatment device comprises a wastewater temporary storage tank, a separation membrane, a liquid discharge pump, a recovery ejector and a washing separator, a wastewater outlet is formed in the upper part of a right side plate of the wastewater temporary storage tank; the separation membrane is used for isolating nitrate from passing through the wastewater; a liquid inlet pipeline is led out of the nitrate-containing wastewater storage equipment and is inserted into the leftmost end of the inner cavity of the wastewater temporary storage tank, and a valve is arranged on the liquid inlet pipeline; a wastewater outlet of the wastewater temporary storage tank is connected with a wastewater pipeline, a liquid discharge pump and a valve are arranged on the wastewater pipeline, and a separation membrane is arranged at an inlet end of the wastewater pipeline; a liquid inlet lead-out pipeline of the recovery ejector is inserted into the bottom of the rightmost end of the inner cavity of the waste water temporary storage tank, and a liquid outlet of the recovery ejector is connected with a liquid inlet of the washing separator through a pipeline. The treatment device disclosed by the invention realizes normal-temperature treatment of the nitrate-containing wastewater.

The invention provides a kettle type overflow synthesis method of a glycerol trinitrate / diethylene glycol dinitrate mixture. The kettle type overflow synthesis method comprises the following steps: step 1, mixing concentrated nitric acid and concentrated sulfuric acid to prepare nitric acid and sulfuric acid mixed acid; mixing glycerol with diethylene glycol to obtain mixed polyol; step 2, continuously pumping the mixed acid of nitric acid and sulfuric acid and the mixed polyol according to the formula ratio into an overflow reaction kettle by virtue of a metering pump, carrying out nitration reaction, and enabling a reaction product to flow out of an overflow port of the reaction kettle and enter a separator; step 3, separating in a separator to obtain an organic phase; 4, the organic phase enters a collecting tank after being subjected to water washing and alkali washing, and a glycerol trinitrate / diethylene glycol dinitrate mixture is obtained. According to the method disclosed by the invention, a kettle type overflow synthesis method is adopted, so that the process operation is simplified, the online amount of reaction is reduced, the safety of a nitration reaction process is improved, and the reaction yield of a glycerol trinitrate / diethylene glycol dinitrate mixture is improved.