41results about "Non-explosive/non-thermic compositions" patented technology

The embodiment of the present application provides a kind of spherical dihydroxy glyoxime and its preparation method and energetic material.The method comprises the following steps: hydrochloric acid solution and dihydroxy glyoxime metal salt suspension are simultaneously added into reaction bottom liquid containing regulator, crystallization reaction is carried out, and crystal suspension is obtained;The crystal suspension is filtered, and the spherical dihydroxy glyoxime is obtained.The method is used to achieve the effect of providing the flowability and bulk density of spherical dihydroxy glyoxime.

The application discloses a synthesis method of aza-cyclic modified hydroxyalkyl diethanolamine borate linking agent, which comprises the following steps: (1) adding hydroxyalkyl diethanolamine and boric acid into a three-neck flask provided with a stirrer, a thermometer and a vacuum distillation device, and stirring and heating to react until no water is generated; (2) adding an aza-cyclic compound into the reaction system obtained in the step (1), increasing the reaction temperature, and removing water generated in the reaction by vacuum distillation when no water vapor is generated, so as to obtain a target product. The borate linking agent obtained by the synthesis method has good hydrolysis resistance, and when the borate linking agent is used in a hydroxyl-terminated solid propellant, the mechanical properties of the hydroxyl-terminated solid propellant can be effectively improved.

The application discloses a ferrocenyl diamine monomer, a polyimide and a preparation method and application thereof, the ferrocenyl diamine monomer is prepared by reacting a ferrocene carbonyl compound with aniline, so as to introduce a ferrocene structural unit into the diamine monomer, and form a novel ferrocenyl diamine monomer for preparing the polyimide; the ferrocenyl diamine monomer is polymerized with a tetracarboxylic dianhydride and is subjected to an imidization reaction to prepare the polyimide, and the polyimide is used as a burning rate catalyst; the polyimide can not only effectively ensure the ferrocene content, has good thermal stability, greatly reduce the high-temperature decomposition temperature of an oxidant, has a smaller influence on the low-temperature decomposition temperature, and can significantly reduce the migration rate, effectively improve the performance of the ferrocene polymer burning rate catalyst, and is beneficial to the use safety.

The invention relates to smokeless gunpowder for barrel systems, which contains powder grains, wherein the surface layer of each powder grain is provided with a phlegmatizer for retarding the combustion of the surface layer of each powder grain, characterized in that the surface layer of each powder grain contains 1 to 10 % by volume of a phlegmatizer, which is formed by either - sucrose acetate, sucrose benzoate, sucrose acetate butyrate, sucrose octaacetate or sucrose benzoate disaccharide esters or sucrose diacetate hexaisobutyrate or - a combination of sucrose acetate, sucrose benzoate, sucrose acetate butyrate, sucrose octaacetate or sucrose benzoate disaccharide esters, or sucrose diacetate hexaisobutyrate with benzyl esters of salicylic acid, especially benzyl salicylate, or - a combination of sucrose acetate, sucrose benzoate, sucrose acetate butyrate, sucrose octaacetate or sucrose benzoate disaccharide esters or sucrose diacetate hexaisobutyrate with phenyl esters of salicylic acid, especially phenyl salicylate, or - a combination of sucrose acetate, sucrose benzoate, sucrose acetate butyrate, sucrose octaacetate or sucrose benzoate disaccharide esters or sucrose diacetate hexaisobutyrate with compounds from the group of benzoates, especially diethylene glycol dibenzoate or dipropylene glycol dibenzoate. The invention also relates to a method of preparing this gunpowder for barrel systems.

The invention relates to the use of nanocatalysts with a high catalytic activity for the thermal decomposition of ammonium perchlorate (AP). To obtain these materials, magnetite nanoparticles (Fe3O4 NPs) were functionalized with two different groups of amine derivatives, tertiary amine (Fe3O4 NPs-A1) and quaternary amine (Fe3O4 NPs-A2). These nanocatalysts allow a lower activation energy to be obtained, accelerating the thermal decomposition of ammonium perchlorate.

This invention discloses a method for preparing a polymer-bonded explosive with synergistic enhancement of graphene and carbon nanotubes, aiming to solve the problem of poor thermal conductivity of existing PBX. By using carbon nanotubes as thermally conductive fillers and forming a multi-level structure through a water suspension method and a slurry method composite process, the prepared composite material has a high thermal conductivity.

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.

A gas generant composition for passive inflatable restraint systems (e.g., airbags) for automobiles is provided that comprises a melamine oxalate compound. The gas generant may be a cool burning gas generant composition that comprises a melamine oxalate compound, a co-fuel, such as guanidine nitrate, and an oxidizer, such as basic copper nitrate. The gas generant composition has advantageous combustion properties, including a maximum flame temperature at combustion (Tc) of ≤about 1700K (1,427° C.), a linear burn rate of ≥about 18 mm per second at a pressure of about 10 megapascals (MPa), a gas yield of the gas generant composition of ≥about 5.7 moles / 100 cm3, and a linear burn rate pressure exponent of ≤about 0.35.

The present application belongs to the technical field of industrial explosive production, and discloses a kind of porous granular ammonium oil explosive, which is prepared by mixing the following components with mass percentage: fuel oil 0.78% to 2.56%, porous granular ammonium nitrate 90.28% to 92.45%, and charcoal powder slurry 5.14% to 7.44%. The charcoal powder slurry is composed of the following components with mass percentage: micron charcoal powder 49.15% to 81.10%, activating agent 12.26% to 42.2%, regenerated fuel oil 2.54% to 11.49%, and anti-caking agent 0.2% to 0.5%. The production method of the explosive is also disclosed. The preparation method of the present application is simple and effective, and the prepared product has the characteristics of environmental protection, anti-caking, and high explosion performance.

This invention discloses an NPTTz-based anionic energetic complex, prepared by a volatilization method using 6-(4-nitro-1H-pyrazole-1-yl)-[1,2,4]triazolo[4,3-b][1,2,4,5]tetraazine and metal nitrates as raw materials. The NPTTz-based anionic energetic complex of this invention exhibits a detonation response upon laser irradiation, demonstrating good safety and detonation performance. It can be used as a laser-initiated detonator or as a component of explosives and propellants. Furthermore, the NPTTz-based anionic energetic complex of this invention exhibits good catalytic activity and can be used as an ammonium perchlorate catalyst, showing promising application prospects in the field of high-energy insensitive energetic materials.

This invention discloses an anionic energetic complex based on AMPTTz, its preparation method, and its application. AMPTTz is 3-amino-6-(3,5-dimethylpyrazol-1-yl)-1,2,4-triazol[4,3-b]-[1,2,4,5]tetraazine. The general structural formula of the anionic energetic complex based on AMPTTz is [X m (AMPTTz) p Y t (H2O) q ] n In the formula ·zH₂O, X is a metal cation, and Y is an acid radical anion; the values ​​of m range from 1 to 2, p from 1 to 6, t from 1 to 5, q from 0 to 2, and z from 0 to 3. The AMPTTz-based anionic energetic complex prepared in this invention exhibits a detonation response upon laser irradiation, demonstrating good safety and detonation performance. It can be used as a laser-initiated explosive or as a component of explosives and propellants, showing promising application prospects in the field of high-energy insensitive energetic materials. Furthermore, the AMPTTz-based anionic energetic complex prepared in this invention can also serve as a combustion catalyst for modified double-base propellants, significantly improving the combustion rate and reducing the platform pressure index.

The application belongs to the technical field of emulsion explosive production, and discloses a foaming agent adding device and method for density control of emulsion explosive, which comprises a circular feeding ring, the bottom end of the circular feeding ring is fixedly connected with nozzles in an axial equidistant manner, and the top end of the circular feeding ring is fixedly connected with a uniform dispersion assembly. The foaming agent is thrown into the circumferentially distributed feeding ring by centrifugal force, and finally sprayed out in a ring array through the multiple nozzles at the bottom. This multi-point spraying mode converts the originally concentrated "single flow" into a wide "ring-shaped rain curtain", greatly increases the contact specific surface area of the foaming agent and the latex matrix, eliminates the local hypersensitization or insufficient sensitization area caused by single-point injection, makes the bubble nucleus more uniformly distributed in the latex matrix, significantly reduces the density distribution mean square error of the processed emulsion explosive, and makes the detonation wave propagation more stable, effectively avoids the half-explosion or quenching phenomenon caused by uneven density, and ensures the quality consistency of the product.

The application provides a synthesis method of [5,5,5,6] furazanopyrazine fused ring energetic compound and belongs to the technical field of energetic materials. The synthesis method comprises the following steps: compound II is prepared by reacting compound I with triphosgene; wherein the chemical structure of compound I is as follows: the chemical structure of compound II, namely [5,5,5,6] furazanopyrazine fused ring energetic compound, is as follows: The application has the characteristics of mild reaction condition, simple operation, easy engineering amplification and the like, and the compound prepared in the application is equivalent to similar compounds in energy performance, is superior to similar compounds reported in mechanical sensitivity, and has strong comprehensive practicability.

Explosives using thermally expandable microspheres (TEMs) in a solid matrix are disclosed that facilitate tunable changes in local density, porosity, and ultimately, shock sensitivity. Solid high explosive systems with “on demand” shock sensitivity may be created. A relatively small fraction (e.g., 1% or less) of TEMs may incorporated during the manufacturing process of the solid matrix explosive (e.g., polymer-bonded explosives (PBX), trinitrotoluene (TNT), etc.). The fraction of TEMs used to achieve the desired explosive properties will depend on the base explosive material to achieve the desired initiation sensitivity.

The application discloses a preparation method of a No. 2 medium setting agent, and is characterized in that the No. 2 medium setting agent is prepared according to the following steps: (1) N-methylaniline, NaOH and water are added into a reaction kettle, and a stirrer is started to mix, and the mixture is layered, and the upper layer is an N-methylaniline layer, and the lower layer is an NaOH aqueous solution layer; (2) an acylation reagent is introduced into the reaction kettle through an insertion pipe, the bottom end of the insertion pipe is located in the upper N-methylaniline layer, the stirring speed is controlled to be 50-300 r / min, and a product is obtained through stirring reaction. According to the application, the side reaction of acyl chloride hydrolysis is greatly inhibited by controlling the reaction temperature, the acylation reagent feeding height and the stirring speed, the generation of salt-containing wastewater is reduced, the environmental protection pressure is reduced, and the selectivity of the No. 2 medium setting agent is improved.

This invention discloses a composite solid propellant and its preparation method, relating to the field of propellant preparation technology. It comprises the following raw materials in parts by weight: 70-75 parts of a desensitizing modified oxidant; 10-15 parts of metal powder; 4-8 parts of a binder system; 3-5 parts of a plasticizer; 1-3 parts of a combustion rate catalyst; 0.1-0.2 parts of a solid catalyst and an antioxidant. This invention adds a desensitizing modified propellant to the raw materials, specifically using ethylenediamine, triethylenediamine, and crown ether to eutectic modify the oxidant. The low melting point of the modified material increases the thermal sensitivity of the oxidant, promoting its combustion reaction. The eutectic material forms a protective film on the oxidant surface, preventing oxidative degradation and pulverization. The eutectic material enhances the relative density and mechanical strength of the oxidant particles, improving the combustion characteristics and energy density of the solid catalyst.

The application discloses a kind of anti-hygroscopic coating modification methods of dinitramide, belong to the field of anti-hygroscopic of energetic oxidizer.The method of the present application uses polyvinyl butyral and fatty acid surfactant as mixed coating agent, and forms polymer-surfactant synergistic anti-hygroscopic coating layer on the surface of dinitramide particles by liquid phase surface coating method;The fatty acid surfactant is octadecanoic acid or eicosanoic acid.Compared with prior art, the present application uses specific polymer and fatty acid surfactant synergistic coating strategy, improves the anti-hygroscopic property of dinitramide without changing its crystal structure and crystal form, realizes the improvement of the anti-hygroscopic property of dinitramide while improving its mechanical safety.The process of the present application is simple, mild, can effectively improve the hygroscopicity of dinitramide, and provides technical support for the practical application of dinitramide in the field of high-energy energetic materials.

The present application belongs to the technical field of industrial explosive production, and discloses a heavy ammonium nitrate fuel oil explosive which is prepared by mixing 20.0-80.0% of porous granular ammonium nitrate fuel oil explosive and 20.0-80.0% of a latex matrix, wherein the porous granular ammonium nitrate fuel oil explosive comprises porous granular ammonium nitrate, fuel oil and charcoal powder slurry; the latex matrix comprises ammonium nitrate, sodium nitrate, urea, water, a composite oil phase, micron charcoal powder and 1.5-3% of glass microspheres based on the total mass of the above-mentioned raw materials. The preparation method of the heavy ammonium nitrate fuel oil explosive is also disclosed. The preparation method is simple and effective, and the prepared heavy ammonium nitrate fuel oil explosive can ensure excellent explosive performance, replace non-renewable substances in the original explosive with renewable substances, and achieve the purposes of low carbon, environmental protection, low cost and high performance.

The present application relates to the field of industrial explosive materials, and discloses a kind of swelling nitramine explosive oil phase material and its preparation method and application.The oil phase material is composed of fischer-tropsch synthesis solid wax, fischer-tropsch synthesis liquid wax and fischer-tropsch synthesis oil, without using petroleum products or adding additional additives, reducing the production of toxic gas after explosive explosion, and using green environmental protection.The preparation method of the oil phase material forms a uniform miscible oil phase material by simply melting and mixing the above components, which is simple, efficient and safe, and suitable for large-scale production.When the oil material is used to prepare swelling nitramine explosive, it can effectively wrap explosive components, improve the flowability of explosive powder, thereby improving the density of swelling nitramine explosive, making the explosive have better explosion performance and use safety;The prepared explosive does not produce sticky and caked phenomenon under the storage condition of higher temperature and humidity, and maintains good explosion performance, and has high practical application value.

The application discloses a preparation process of special magnesium oxide and relates to the technical field of special magnesium oxide preparation, and comprises the following steps: crushing magnesite, processing the magnesite into a plurality of ore blocks, screening the ore blocks with high magnesium content for further crushing, setting the initial rotating speed of a converter, starting the converter and preheating, pouring the ore blocks into the converter, continuously heating the converter, when the temperature and heating time of the converter reach the requirements, stopping the heating and closing the converter, cooling the converter to the ambient temperature, completing the first-time burning of the magnesium oxide, resetting the rotating speed of the converter, starting the converter and heating, when the temperature and heating time of the converter reach the requirements, stopping the heating and closing the converter, cooling the converter to the ambient temperature, taking out the special magnesium oxide after repeated burning, mixing and bagging, and completing the preparation of the special magnesium oxide. The repeated calcination method is adopted, the prepared magnesium oxide has high catalytic performance, and thus the combustion performance of double-base propellant is improved.

This application discloses a method for screening interfacial compatibilizers for cast explosives, a method for preparing cast explosives, and a method for preparing cast explosive charge. The screening method includes: S1: simulating and calculating the van der Waals surface electrostatic potentials of the target matrix molecules, dispersed phase molecules, and each candidate interfacial compatibilizer monomer to evaluate the electrostatic complementarity between molecules; S2: based on the results of the electrostatic potential simulation analysis in S1, constructing initial dimer models between the candidate interfacial compatibilizers and the target matrix molecules and dispersed phase molecules respectively, and screening out candidate interfacial compatibilizers that can form strong stabilizing interactions with both by comparing the binding energy values; S3: performing independent electron density topological analysis on the candidate interfacial compatibilizers obtained in S2 and the dimers constructed with the target matrix molecules and / or dispersed phase molecules, visualizing the interactions and obtaining the topological parameters of the bond critical points, thereby determining the specific selection of the interfacial compatibilizer. This method achieves efficient and accurate screening of interfacial compatibilizers.

This invention discloses a method for lubrication and drag reduction, as well as rapid static sensitization at the end of a pipeline for transporting mixed emulsion explosives. The method includes the following steps: S1, a latex matrix is ​​pumped into the pipeline using a pump, while a sensitizer is pumped into a lubrication and drag reduction device using a high-pressure plunger pump; S2, the lubrication and drag reduction device evenly distributes the sensitizer on the inner wall of the pipeline, forming a continuous lubricating film, thus achieving layered transport of the latex matrix and sensitizer; S3, the layered latex matrix and sensitizer enter a static mixer at the end of the pipeline for rapid and uniform mixing. This invention utilizes the sensitizer as a lubricant to form a lubricating film through a lubrication and drag reduction device, achieving layered transport of the latex matrix and sensitizer. This significantly reduces transport resistance, solves the problems of blockage and excessive pressure in long-distance transport pipelines, improves transport efficiency and intrinsic safety, and has significant economic and social benefits.

The application discloses a kind of core-shell structure manganese-based nano thermite and its preparation method, belong to energetic material technical field.The thermite is with micron aluminum powder as core, polyvinylidene fluoride and nanometer manganese oxide composite as shell layer, form dense spherical microstructure.Its preparation method includes: polyvinylidene fluoride is dissolved in solvent, micron aluminum powder and manganese oxide are added and are dispersed into precursor liquid by ultrasonic, by adjusting voltage, receiving distance and other parameters, using electrostatic spraying technology, core-shell structure microspheres are prepared by one-step method.The application effectively solves the agglomeration problem of nanometer manganese oxide using electrostatic spraying process, realizes the uniform coating of components in micron scale;Polyvinylidene fluoride shell layer serves as buffer and isolation layer, significantly reduces the mechanical sensitivity of material, greatly improves safety;At the same time, the structure effectively inhibits the micro-explosion and splashing phenomenon in the combustion process, realizes the stability, continuity and completeness of reaction.

This invention discloses an anionic energetic complex based on ANPTTz, its preparation method, and its applications. The method includes preparing the complex via a volatilization method using 6-(4-nitro-1H-pyrazole-1-yl)-[1,2,4]triazolo[4,3-b][1,2,4,5]tetraazine-3-amine and a metal nitrate as raw materials. The anionic energetic complex based on ANPTTz exhibits a detonation response upon laser irradiation, demonstrating good safety and detonation performance. It can be used as a laser-initiated explosive or as a component of explosives and propellants, showing promising application prospects in the field of high-energy insensitive energetic materials.

This invention discloses an anionic energetic complex based on APTTz, its preparation method, and its applications. APTTz is 6-(1H-pyrazol-1-yl)-[1,2,4]triazolo[4,3-b][1,2,4,5]tetraazine-3-amine. The general structural formula of the anionic energetic complex based on APTTz is [X m (APTTz) p Y t ] n· In zH₂O, X is a metal cation, and Y is an acid radical anion; the values ​​of m range from 1 to 2, P range from 1 to 3, t range from 1 to 2, and z range from 0 to 2. The triazolotetraazine anionic energetic complex obtained in this invention exhibits a detonation response upon laser irradiation, demonstrating good safety and detonation performance. It can be used as a laser-initiated explosive or as a component of explosives and propellants, showing promising application prospects in the field of high-energy insensitive energetic materials. The APTTz-based anionic energetic complex prepared in this invention can be used as a combustion catalyst for composite propellants and modified double-base propellants, significantly improving the combustion rate of composite propellants and modified double-base propellants and reducing the platform pressure index.

This invention discloses a core-shell structured moisture-resistant ammonium dinitramide composite material, its preparation method, and its applications. The composite material uses ammonium dinitramide (ADN) as the core and methyl methacrylate-butyl acrylate copolymer (PMMA-BA) as the shell. A solvent-non-solvent method is used to precipitate and coat the PMMA-BA copolymer onto the ADN surface, resulting in the ADN@PMMA-BA core-shell structured composite material. This invention effectively shields the polar ionic sites on the ADN surface by constructing a dense hydrophobic polymer shell, significantly reducing its adsorption and permeation of water molecules. While maintaining the original thermal stability and energy performance of ADN, this material exhibits reduced moisture absorption and increased water contact angle, demonstrating excellent moisture-resistant properties. It is suitable for applications in humidity-sensitive explosives, propellants, and blasting agents, effectively extending the storage stability and safety of ADN-containing materials.

The present application relates to a kind of sodium carboxymethyl cellulose-polyazide glycidyl ether co-coated aluminum lithium alloy powder and its preparation method, belong to energetic material technical field.CMC is coated on the surface of aluminum lithium alloy powder with aluminum chelation, and GAP is grafted and coated on the surface of CMC;The degree of substitution of CMC is less than 1.CMC is further reacted with the CMC on the surface of aluminum lithium alloy powder after modification by GAP, and the grafted GAP can be further reacted with the surface of CMC through hydroxyl group, and is tightly coated on the surface layer of CMC.The coated aluminum lithium alloy powder is not directly connected with GAP, which avoids the high activity of lithium, and the large amount of GAP falling caused by low compatibility.GAP itself as an energetic binder of propellant, it can significantly improve the energy level of alloy powder, and the alloy powder containing azide can release a large amount of heat value without oxygen environment when decomposing.It has significant significance for the energy improvement of aluminum lithium alloy powder itself and the subsequent application of aluminum lithium alloy powder in propellant.

The application discloses a method for catalyzing thermal decomposition of ammonium perchlorate by using a metal carbodiimide compound, and belongs to the field of solid rocket propellants. The method is characterized in that the metal carbodiimide compound is mixed into the ammonium perchlorate at a certain proportion and used as a catalyst to perform a thermal decomposition reaction of the ammonium perchlorate, so as to reduce the thermal decomposition temperature of the ammonium perchlorate and improve the heat release. Therefore, the method can be applied to the field of solid rocket propellants.