35results about "Ammonium perchlorate explosive compositions" patented technology

The invention discloses application of ferrocenyl conjugated microporous polymers Fc-CMPs in a composite solid propellant and the composite solid propellant, the ferrocenyl conjugated microporous polymers Fc-CMPs are porous organic polymers which take ferrocenyl groups as conjugated functional units and are connected through covalent acetylenic bonds, and the ferrocenyl conjugated microporous polymers Fc-CMPs have excellent thermal stability and permanent porosity, and can be used for preparing the composite solid propellant. The material is solid powder, is insoluble in a traditional organic solvent and does not migrate, and a ferrocene unit serves as a constituent part of a polymer framework and an oxidation-reduction active site and is dispersed in a two-dimensional conjugated network structure of a composite solid propellant. When being used as a burning rate catalyst to be applied to AP decomposition, the ferrocene burning rate catalyst can obviously reduce the high-temperature decomposition peak temperature of AP, and solves the migration problem of a traditional ferrocene burning rate catalyst in a composite solid propellant system. The Fc-CMPs are applied to an AP decomposition catalysis scene for the first time, and a new direction is provided for development of a composite solid propellant burning rate catalyst.

The invention relates to a composite solid propellant comprising: - a crosslinked polyurethane binder, which is the reaction product of a polyol polymer and a polyisocyanate crosslinking agent, in the presence of a crosslinking catalyst; - ammonium perchlorate; - optionally aluminum; - optionally a ballistic catalyst; - at least one additive comprising a functionalized organic compound comprising 30 to 50 carbon atoms. Figure for the abstract: Fig. 1.

The invention belongs to the technical field of ammonium perchlorate modification, and particularly relates to a low-sensitivity ammonium perchlorate composite material and a preparation method thereof. The preparation method of the composite material comprises the following steps: (1) mixing diethanol amine and an insensitive material to obtain a coating material; (2) adding a part of ammonium perchlorate into a stirrer according to a sandwich type feeding method, spreading the bottom of the stirrer, adding a coating material, finally adding the rest ammonium perchlorate, lifting a stirrer material cylinder, and starting a stirring reaction when the bottom of a stirring paddle is about to touch the material; and (3) after the reaction is finished, stirring and cooling the reaction system to obtain the ammonium perchlorate composite material with low friction sensitivity and impact sensitivity. The process provided by the invention is suitable for preparing low-sensitivity ammonium perchlorate with various particle sizes, has the advantages of simple process flow, good reproducibility, easiness in amplification and almost no pollution to the environment, and does not influence the performance of ammonium perchlorate while reducing the sensitivity of ammonium perchlorate.

The application provides an oleic acid amide compound, a preparation method and a method for improving propellant performance, and the method for improving propellant performance comprises the following steps: adding the oleic acid amide compound into a solid propellant with a solid content greater than or equal to 90% as an additive for reducing the viscosity of a solid propellant slurry and improving the flow leveling property of the solid propellant slurry. The oleic acid amide compound of the application can significantly improve the wetting state of solid particles and a binder system of the propellant, so that the solid particles are easily dispersed, the structural strength hindering the flow in the slurry is reduced, the yield value and the viscosity of the slurry are reduced, and the flow leveling index of the slurry is improved. The application effect of the oleic acid amide compound in the solid propellant with a solid content greater than or equal to 90% is good.

The application discloses a kind of nitrogen-rich oxygen three-component high-energy density materials and synthesis method thereof.By introducing high-energy or low-sense energetic anion and cation to regulate neutral compound performance is the most direct and effective way to alleviate the contradiction between energy and stability of energetic material,can fundamentally realize the dual promotion of energy and stability.Nitrogen-rich compound 4,5-diamino-3-aminomethyl-1,2,4-triazole is used as substrate,ionization reaction is carried out with perchloric acid,then hydroxylamine ion is introduced by intermolecular force,obtains nitrogen-rich oxygen three-component high-energy density material.The synthesis method has the characteristics of easy-to-obtain raw materials,operation is simple,high safety,high yield and the like.

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.

The invention discloses a display shell capable of generating a yellow smoke effect, which consists of a spherical shell body filled with explosives and effect powder and a paper cup seat loaded with propellant powder, and further comprises an ignition lead and a blasting fuse. According to the display shell provided by the invention, through the three-section synergistic effect of the effect powder, the explosive and the propellant powder, stable generation and high-altitude release of yellow smoke are realized. The effect drug takes 3, 6-diamino-10-methyl acridine hydrochloride as a color development core and is supplemented by a barium nitrate / strontium carbonate composite oxidant system; the explosive triggers the effect explosive to release through a high-heat reaction of aluminum powder-barium nitrate; the propellant ensures that the display shell is accurately lifted off through high-energy output of potassium perchlorate-magnesium aluminum alloy. The three formulas form synergy in three aspects of energy transfer, oxidant complementation and combustion regulation, so that the yellow smoke has the advantages of stable color development, uniform diffusion and long duration.

The invention relates to the technical field of solid rocket propellants, and particularly discloses a phosphoric acid modified cyclic borate bonding agent and a preparation method and application thereof.The bonding agent does not contain nitrogen atoms, contains a cyclic structure, further introduces high-polarity phosphorus-oxygen (P = O) groups and has multiple hydroxyl groups capable of participating in a curing reaction; the compatibility with nitrate in a high-energy propellant is good, and ammonia release caused by the adoption of a bonding agent containing amido is avoided; the catalyst has good hydrolytic stability, and can generate a bonding effect with a nitramine filler in a coordination bonding manner; by improving the surface and interface performance of the solid filler and increasing the infiltration speed of the adhesive to the solid filler, the pharmaceutical process performance of the propellant can be improved; and the polymer can also be used as a chain extender and a reinforcing agent to optimize and regulate a matrix network structure, so that the purposes of high strength and high elongation are achieved. The bonding agent can meet the development requirements of NEPE high-energy propellants on high mechanical properties and optimized process properties.

A gas generating composition according to various embodiments includes a fuel, an oxidant, and at least two combustion modifiers. The oxidant may be a metal nitrate, such as basic copper nitrate; the fuel may be a nitrogen-containing organic compound, such as melamine nitrate; the at least two combustion modifiers are ammonium perchlorate and potassium perchlorate. Ammonium perchlorate and potassium perchlorate are present in any ratio between 3: 1 and 1: 3, respectively, relative to each other. In some embodiments, the ratio is 1: 1. Optionally, the gas generating composition may include other ingredients, such as treatment lubricants, slagging agents, as well as other fuels, oxidants, and combustion modifiers.

The invention relates to the fields of chemical industry, pyrotechnic compositions, fireworks and crackers and the like, and relates to preparation of barium fumarate serving as a novel compound material with coloring agent and reducing agent effects, and preparation and application of the material in the fields of pyrotechnic compositions, fireworks and crackers and the like. The preparation method comprises the following steps: mixing fumaric acid and barium carbonate or barium oxide or barium hydroxide, and heating an aqueous solution to prepare barium fumarate; furthermore, the barium fumarate can be fully mixed with selected other substances to prepare a green pyrotechnic composition, and the green pyrotechnic composition is applied to fireworks and crackers and other fields; in addition, the barium fumarate is mixed with other selected substances, a small amount of perchlorate can be selectively added and fully mixed to prepare non-pyrotechnic composition or pyrotechnic composition substances in various geometrical shapes, and then the substances are placed in handheld, ground and air (including aircrafts) devices or equipment to be used for preparing the non-pyrotechnic composition or pyrotechnic composition. The non-pyrotechnic composition and the pyrotechnic composition substance can be ignited according to the electronic heating principle, and green light is emitted through combustion for color development.

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.

The application discloses a method for adjusting TKX-50 oxygen balance based on oil-in-oil technology, comprising the following steps: dissolving TKX-50, AP and fluorine rubber into an organic solvent, adding a surfactant and an alkane, stirring and ultrasonicating to obtain an emulsion system; gradually adding ethanol into the emulsion system for extraction, slowly diffusing the organic solvent into ethanol, and gradually separating to form spherical-like compounds when TKX-50, AP and fluorine rubber reach saturation; and filtering, washing and drying to obtain a final sample. The application uniformly composites TKX-50 and AP at a nanometer scale, obtains spherical-like TKX-50 / AP compounds with regular morphology, improves the thermal decomposition performance of TKX-50, and reduces the sensitivity of TKX-50, and the significant advantages include: (1) simple preparation process, high efficiency and low cost; (2) mild experimental conditions and high product quality; (3) small proportion of non-explosive materials used, and no influence on the oxidation effect of the oxidant.

This invention provides an energetic complex Cs-BTE, its continuous preparation method, and its applications. Starting with 1,2-bis(tetraazol-5-yl)ethane, a ligand solution and a metal ion salt solution are continuously injected into a continuous flow reaction unit via a syringe pump. After filtration, washing, and drying, energetic complex crystals are obtained. This invention develops a novel, simple, continuous, and mild method for preparing energetic complexes. For the first time, an energetic complex Cs-BTE with a novel structure and excellent overall performance was prepared. In addition to high thermal stability, Cs-BTE also possesses the advantages of a simple, efficient, safe, and controllable process. The thermal decomposition temperature of Cs-BTE reaches 375.5℃, with a measured impact sensitivity greater than 40 J and a friction sensitivity greater than 360 N. It also exhibits a catalytic effect on the thermal decomposition of ammonium perchlorate. The superior performance of Cs-BTE makes it a promising energetic complex for catalyzing the combustion efficiency of solid propellants.

The invention relates to the technical field of AP (ammonium perchlorate) modification, in particular to a preparation method of an ammonium perchlorate anti-moisture-absorption material coated with silicon dioxide based on double-silane synergistic modification through a wet method. Silicon dioxide is subjected to two-step synergistic modification through a long-chain alkylsilane modifier and a short-chain alkylsilane modifier; the preparation method comprises the following steps: modifying the surface by using long-chain silane, filling long-chain silane modified gaps by using short-chain alkyl to prepare modified nano silicon dioxide particles, and coating superfine AP particles with the modified nano silicon dioxide particles through wet modification, the modified nano silicon dioxide particles have enough steric hindrance and better hydrophobicity due to a three-dimensional structure on the surface, and the AP can be effectively prevented from being agglomerated after being coated with the modified nano silicon dioxide particles; the method is green and pollution-free, the process is simple, the comprehensive performance can be easily controlled through simple adjustment, the problem that the ultra-fine AP particles produced industrially are prone to moisture absorption and caking can be solved, and the application range of the ultra-fine AP particles in novel high-energy propellants is widened.

Additive-manufactured fuel grains for hybrid rocket engines (HREs) and method of manufacturing the same are disclosed herein. The additive-manufactured fuel grain has an infill density and an infill geometry selected to provide a predetermined burn profile. The method of manufacturing the fuel grain comprises operating an additive-manufacturing system to fabricate a fuel grain having an infill density and an infill geometry selected to provide a predetermined burn profile.

The invention relates to the fields of chemical industry, pyrotechnic compositions, fireworks and crackers and the like, and relates to preparation of strontium fumarate serving as a novel compound material with coloring agent and reducing agent effects, and preparation and application of the material in the fields of pyrotechnic compositions, fireworks and crackers and the like. The preparation method comprises the following steps: mixing fumaric acid and strontium carbonate or strontium oxide or strontium hydroxide, and heating an aqueous solution to prepare strontium fumarate; furthermore, strontium fumarate can be fully mixed with selected other substances to prepare a red pyrotechnic composition, and the red pyrotechnic composition can be applied to fireworks and crackers and other fields; in addition, strontium fumarate is mixed with other selected substances, a small amount of perchlorate can be selectively added to be fully mixed to prepare non-pyrotechnic composition or pyrotechnic composition substances in various geometrical shapes, and then the substances are placed in handheld, ground and air (including an aircraft) devices or equipment to be used for preparing the non-pyrotechnic composition or pyrotechnic composition. The non-pyrotechnic composition and the pyrotechnic composition substance can be ignited according to the electronic heating principle, and red light is emitted through combustion for color development.

The present disclosure provides a gas-generating agent composition, a gas-generating agent, and a preparation method and the use. The gas-generating agent composition comprises the following components, in percentages by mass: 30-70% of guanidine nitrate, 20-60% of basic copper nitrate, 0-10% of basic copper carbonate, 1-10% of ammonium perchlorate and 1-15% of a slag-forming agent, wherein the slag-forming agent comprises a first component and a second component, the first component being selected from aluminum hydroxide, and the second component being selected from at least one of a zirconate and a silicate.

Gas-generating compositions according to various embodiments comprise a fuel, an oxidizer, and at least two combustion modifiers. The oxidizer can be a metal nitrate, such as basic copper nitrate, and the fuel can be a nitrogen-containing organic compound, such as melamine nitrate. The at least two combustion modifiers are ammonium perchlorate and potassium perchlorate. The ammonium perchlorate and potassium perchlorate are present in a ratio of between 3:1 and 1:3. In some embodiments, the ratio is 1:1. Optionally, the gas-generating compositions can include additional components, such as processing lubricants, slagging agents, and additional fuels, oxidizers, and combustion modifiers.

The application provides a graphene metal complex-ammonium perchlorate composite, a preparation method and application thereof, and the preparation method is as follows: graphene-metal complex is ultrasonically dispersed in a solvent to prepare a graphene-metal complex dispersion liquid; ammonium perchlorate is stirred and dissolved in the solvent to prepare an ammonium perchlorate solution; the graphene-metal complex dispersion liquid and the ammonium perchlorate solution are stirred and uniformly mixed, and then spray granulation is performed under a protective atmosphere by using a spray granulator; after the spray granulation is completed, the graphene metal complex-ammonium perchlorate composite is prepared. The graphene metal complex-ammonium perchlorate composite can be used as a combustion catalyst in a solid propellant. The graphene metal complex-ammonium perchlorate composite of the application is not prone to migration in the solid propellant, and can improve the combustion performance of the solid propellant while ensuring the service life of the solid propellant.

The present application belongs to the field of composite solid propellant manufacturing, and specifically discloses a gas generating agent with a wide burning rate adjusting range, a preparation method and application thereof, which comprises the following raw materials in parts by weight: binder: 10-15%; plasticizer: 3.4-8.4%; curing agent: 1.0-1.5%; oxidizer: 30-65%; cooling agent: 10-45%; burning rate catalyst: 0.5-6.0%; bonding agent: 0.1-0.3%; wherein the oxidizer is mixed in an arbitrary ratio of 100-400 μm coarse particles and 10 μm or less fine particles to achieve the adjustment of the burning rate range. The gas generating agent uses polyether or azide polyether as the binder, high-oxygen-content inert ester as the plasticizer, and modified borate or alcohol amine as the bonding agent, and has a wide formula burning rate adjusting range, can be adjusted to 2.5 mm / s-35 mm / s, the normal temperature mechanical strength is adjusted to 1.0 MPa-1.8 MPa, and the elongation is greater than 60%.

A binder material suitable for energetic compositions comprises a cross-linked material formed from a hydroxyl containing compound (preferably hydroxy terminated polybutadiene), a cross-linker having

The invention discloses a preparation method of modified ammonium perchlorate triethylene diamine perchloric acid double salt. According to the disclosed scheme, K < + > or NO3 <-> is doped in DAP-4, so that the sensitivity of DAP-4 is reduced, and the modified ammonium perchlorate triethylene diamine perchloric acid double salt is prepared. The doped perovskite energetic compound DAP-4 belongs to a heat-resistant explosive, and plays an important role in the fields of oil exploration and civil industry.

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.

The invention relates to the technical field of energetic materials, in particular to a composite energetic material with molecular perovskite DAP-4 growing on the surface of MXene in situ and a preparation method and application thereof.The preparation method includes the steps that triethylene diamine and ammonium perchlorate are sequentially added into MXene suspension liquid, and stirring is conducted to obtain an MXene precursor solution; and dropwise adding an HClO4 solution while stirring to obtain DAP-4-coated MXene composite particles, continuously stirring, carrying out suction filtration, washing, and drying to obtain the composite energetic material. By adopting the steps, DAP-4 crystals are crystallized and grown on the surface of the MXene sheet layer in situ, so that the laser energy absorption and heat conduction efficiency of the material can be improved, and the photothermal conversion efficiency of DAP-4 is remarkably improved, thereby effectively reducing the laser ignition threshold and shortening the ignition delay time. Meanwhile, the MXene can also enable the material to show higher energy release efficiency in the combustion process.

The application discloses a preparation method of superfine porous ammonium perchlorate and belongs to the technical field of materials. The preparation method is as follows: ammonium perchlorate raw materials are dissolved in a mixed solvent to prepare an ammonium perchlorate saturated solution; then, a surfactant is added into the ammonium perchlorate saturated solution and stirred uniformly; then, the ammonium perchlorate saturated solution is added into a non-solvent at a constant speed, the ammonium perchlorate particles are precipitated while stirring, and the stirring is continued after the addition is completed; after the reaction is completed, the reaction solution is filtered, washed and dried to obtain the superfine porous ammonium perchlorate. The superfine porous ammonium perchlorate is obtained by dissolving the ammonium perchlorate in a mixed solution of methanol and triethanolamine through a solvent-non-solvent method and then precipitating the ammonium perchlorate from a non-solvent octane, the method is safe and reliable, the operation steps are simple, the cost is low, the method is suitable for industrial production, the particle size is controllable, and the superfine porous ammonium perchlorate is easy to prepare.

The invention relates to the technical field of propellants, in particular to a gel propellant curing factor material, a gel propellant and a preparation method and application of the gel propellant. The gel propellant curing factor material comprises an organic supramolecular gelling agent and an inorganic nano material gelling agent, wherein the organic supramolecular gelling agent is an amphiphilic organic amino acid derivative, and the structural formula of the organic supramolecular gelling agent contains carboxyl and amido bonds. An organic supramolecular curing factor material and an inorganic nano material are used as curing factors, so that the adaptability of the propellant can be enhanced while the combustion performance of the gel propellant is not influenced, and good hydrodynamic characteristics and atomization performance of the propellant are maintained; meanwhile, combustion products of the gel propellant are clean and free of pollution, and the concept of green promotion is met.

The application provides an iron oxide-based ammonium perchlorate composite and a preparation method thereof, and the preparation method specifically comprises the following processes: dispersing an iron oxide-graphene composite in a solvent by ultrasonic to obtain an iron oxide-graphene composite dispersion; dissolving ammonium perchlorate in the solvent by stirring to obtain an ammonium perchlorate solution; uniformly mixing the iron oxide-graphene composite dispersion and the ammonium perchlorate solution by stirring, and then performing spray granulation under a protective atmosphere by using a spray granulator; and after the spray granulation is completed, the iron oxide-based ammonium perchlorate composite is obtained. By preparing the iron oxide-based ammonium perchlorate composite, the iron oxide and the iron oxide-graphene composite are directly combined with the ammonium perchlorate, the combustion catalytic efficiency is improved, and meanwhile, the graphene material is used as a carrier, which is helpful for the dispersion of the nano iron oxide, and the combustion catalytic performance is further improved.

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.

This invention belongs to the field of thrusters, specifically relating to an electrically controlled solid propellant afterburning propellant and a thruster system. The electrically controlled solid propellant afterburning propellant, by weight, comprises 65-95 parts oxidizer, 5-25 parts binder, and 0.3-5 parts curing agent. When the main combustion chamber is energized, the high-temperature, fuel-rich gas flow generated in the main combustion chamber washes over the surface of the afterburning propellant, rapidly reaching its pyrolysis temperature and instantaneously releasing oxygen. When applied to an electrically stimulated thruster combustion enhancement device, the afterburning propellant, upon heating, decomposes to produce oxygen-rich gas, which can mix and burn with the high-temperature, fuel-rich gas generated from incomplete combustion in the main combustion chamber. This fully utilizes the electrically controlled solid propellant, and the afterburning propellant offers controllable combustion, thereby significantly improving propellant combustion efficiency and thrust performance without affecting the thruster's electrically controlled combustion characteristics.

Additive-manufactured fuel grains for hybrid rocket engines (HREs) and method of manufacturing the same are disclosed herein. The additive-manufactured fuel grain has an infill density and an infill geometry selected to provide a predetermined burn profile. The method of manufacturing the fuel grain comprises operating an additive-manufacturing system to fabricate a fuel grain having an infill density and an infill geometry selected to provide a predetermined burn profile.