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212results about "Ammonium perchlorate explosive compositions" patented technology
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Gas propelled munitions Anti-fouling system
InactiveUS20190106364A1Great contributionShotgun ammunitionNon-explosive/non-thermic compositionsEngineeringCitric acid
A gas propelled munitions anti-fouling system has a case having an open forward mouth end, a rear end, and an interior, the rear end defining a pocket that receives a primer and a passage communicating between the pocket and the interior of the case, a quantity of propellant received within the interior of the case, a quantity of anti-fouling composition received within the interior of the case, and a bullet having a rear portion inserted into the open forward mouth end of the case. The anti-fouling composition may have at least one salt and at least one acid. The acid may be anhydrous. The salt may be sodium chloride or sodium nitrate. The acid may be anhydrous citric acid. The anti-fouling composition may have at least one abrasive. The abrasive may be stannic acid. The anti-fouling composition may be 50% salt by weight and 50% acid by weight.
Owner:ADLER CAPITAL LLC
Reactive material enhanced projectiles and related methods
ActiveUS20080035007A1Simple and robustDesign economyAmmunition projectilesCartridge ammunitionEngineeringReactive material
A munition, such as a projectile formed of at least one reactive material, is provided. In one embodiment, the projectile includes a body portion formed of at least one reactive material composition wherein the at least one reactive material composition defines at least a portion of an exterior surface of the projectile. In other words, a portion of the reactive material may be left “unbuffered” or exposed to the barrel of a gun or weapon from which it is launched and similarly exposed to a target with which the projectile subsequently impacts. In one embodiment, the projectile may be formed with a jacket surrounding a portion of the reactive material to provide additional structural integrity. The projectile may be formed by casting or pressing the reactive material into a desired shape. In another embodiment of the invention, the reactive material may be extruded into a near-net shape and then machined into the desired shape.
Owner:NORTHROP GRUMMAN SYST CORP
Explosive material composition and method for preparing the same
InactiveUS20050189049A1Moderate mechanical strengthExplosive working-up apparatusAlkali metal salt explosive compositionsAdditive ingredientWater soluble
An explosive material composition containing, as an active ingredient, particles of a water-soluble reactive ingredient having an uniform particle size. Each particle is coated with an oil ingredient and / or a thickener. The coated particles form an agglomerate.
Owner:NOF CORP
Multicolor cold-firework reagent and manufacturing method of cold fireworks
InactiveCN103121886AEasy to viewExplosive working-up apparatusAmmonium perchlorate explosive compositionsNitrocellulosePhotoluminescence
The invention discloses a multicolor cold-firework reagent and a manufacturing method of cold fireworks. The multicolor cold-firework reagent comprises the following components in percentage by weight: 20-30% of ammonium perchlorate, 20-30% of nitrocellulose, 30-35% of silver titanium powder, 15-20% of photoluminescence material and 5-10% of fluororubber. The manufacturing method of the spraying-decoration cold fireworks comprises the following steps: fuel granulation, reagent mixing, charging and packaging. The manufacturing method of the high-waterfall display shell cold fireworks comprises the following steps: luminescent material granulation, fuel mixing, detonating agent manufacturing and display shell filling. The cold fireworks disclosed by the invention can have multiple bright colors, thereby greatly enhancing the ornamental value of the cold fireworks.
Owner:NANJING UNIV OF SCI & TECH
Thermoplastic polymer propellant compositions
Owner:CESARONI ANTHONY JOSEPH
Method for cladding energetic materials
InactiveCN104591932AImprove solubilityCoated evenlyNitroparaffin explosive compositionsNitrated acyclic/alicyclic/heterocyclic amine explosive compositionsNon solventAnti solvent
The invention relates to a method for cladding energetic materials and particularly relates to a method for coating energetic materials by taking liquid CO2 as an anti-solvent, a dispersion agent and a drying medium. The method provided by the invention is mainly used for solving the technical problems of the existing method for coating energetic material that the coating is not uniform, the operation is complicated, some special energetic materials cannot be coated by a wet process, the solvent cannot be mutually soluble with a non-solvent to limit the application of the water (or solution) suspension method and cause the environment pollution. The invention provides a method for coating energetic materials by taking liquid CO2 as an anti-solvent, a dispersion agent and a drying medium. The method provided by the invention has the advantages of uniform coating, simple operation, wide application range and no environmental pollution.
Owner:ZHONGBEI UNIV
Solid gas generator and preparation method thereof
The invention provides a solid gas generator and a preparation method thereof. The solid gas generator comprises 12 to 23% of a polyether adhesive, 1.2 to 3.6% of a curing agent, 50 to 80% of an oxidizing agent, 0 to 5% of a plasticizer, 0 to 30% of a cooling agent, 0 to 5% of a combustion conditioning agent and 0 to 2% of other additives, wherein the polyether adhesive is one or a composition of more than one selected from the group consisting of ethylene oxide tetrahydrofuran copolyether and propylene oxide tetrahydrofuran copolyether, the curing agent is one or a composition of more than one selected from the group consisting of toluene diisocyanate, isophorone diisocyanate and multifunctional aliphatic diisocyanate, and the plasticizer is one or a composition of more than one selected from the group consisting of dioctyl sebacate, acetyl triethyl citrate and triethyl glycerin tricarbonate. The solid gas generator provided by the invention has a negative pressure exponent of 0 to - 0.30 and provides a power source for attitude control and orbit control power systems of light-weight kinetic kill vehicles (KKV).
Owner:HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
Method and device for preparing nanometer-eutectic energetic material
InactiveCN103977593AFine granularityUniform grainNitrated aromatic explosive compositionsSolution crystallizationSolventHigh pressure
The invention discloses a method and a device for preparing a nanometer-eutectic energetic material. The method comprises the following steps that an energetic material is dissolved in a good solvent and then is transported into a temperature gradient heating furnace through inert gases in an ultrasonic spray manner, and then nanometer-eutectic energetic material crystals are collected through a high-voltage electrostatic field and the good solvent and the inert gases are cooled and recovered. The device used in the method is formed by sequentially communicating an ultrasonic device, the temperature gradient heating furnace, the high-voltage electrostatic field and a receiving device in a sealing manner. The method can prepare the energetic material crystals with the crystal size being 20-1000nm, is wide in preparation range, and can realize continuous operation. The preparation method is simple in procedures and is easy to operate, reaction conditions are mild and are easily controlled, and the method can be applied to various kinds of eutectic explosives. The crystal grains of the prepared nanometer-eutectic energetic explosives are uniform, and the purity is larger than 99.9 percent. Waste liquid in the preparation procedures is recovered, and the minimum pollution to the environment is realized.
Owner:INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
Safe environment-friendly novel pyrotechnic composition
InactiveCN104276908AReduced friction sensitivityLow impact sensitivityAlkali metal salt explosive compositionsAmmonium perchlorate explosive compositionsCelluloseNitrocellulose
A safe environment-friendly novel pyrotechnic composition is used as a powdery colorful flower-forming spray composition, and comprises the compositions in parts by weight: 20-50 parts of a high-energy oxidizing agent, 30-60 parts of nitrocellulose, 1-15 parts of a colouring agent, 1-15 parts of a combustible effect agent, 1-10 parts of an adhesive, and 1-10 parts of a stabilizing agent. A preparation technology for the novel pyrotechnic composition is simple, the pyrotechnic composition prepared by employing the above formula is relatively low in friction sensitivity and impact sensitivity, far higher in chemical stability and safety than those of other pyrotechnic compositions, slightly smoky and environment-friendly after being combusted, and is widely applicable to various pyrotechnic composition products.
Owner:周健 +1
Ammonium perchlorate-containing gas generants
ActiveUS20050067076A1Non-explosive/non-thermic compositionsAmmonium perchlorate explosive compositionsScavengerCopper nitrate
Ammonium perchlorate-containing gas generant compositions which, upon combustion, produce or result in an improved effluent and related methods for generating an inflation gas for use in an inflatable restraint system are provided. Such ammonium perchlorate-containing gas generant compositions include ammonium perchlorate present with a mean particle size in excess of 100 microns. Such ammonium perchlorate-containing gas generant compositions also include or contain a chlorine scavenger present in an amount effective to result in a gaseous effluent that is substantially free of hydrogen chloride when the gas generant is combusted, wherein at least about 98 weight percent of the chlorine scavenger is a copper-containing compound. Suitable copper-containing chlorine scavenger compounds include basic copper nitrate, cupric oxide, copper diammine dinitrate-ammonium nitrate mixture wherein ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, copper diammine bitetrazole, a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate and combinations thereof.
Owner:AUTOLIV ASP INC
Reactive material enhanced projectiles and related methods
ActiveUS8122833B2Simple and robustDesign economyAmmunition projectilesCartridge ammunitionEngineeringReactive material
A munition, such as a projectile formed of at least one reactive material, is provided. In one embodiment, the projectile includes a body portion formed of at least one reactive material composition wherein the at least one reactive material composition defines at least a portion of an exterior surface of the projectile. In other words, a portion of the reactive material may be left “unbuffered” or exposed to the barrel of a gun or weapon from which it is launched and similarly exposed to a target with which the projectile subsequently impacts. In one embodiment, the projectile may be formed with a jacket surrounding a portion of the reactive material to provide additional structural integrity. The projectile may be formed by casting or pressing the reactive material into a desired shape. In another embodiment of the invention, the reactive material may be extruded into a near-net shape and then machined into the desired shape.
Owner:NORTHROP GRUMMAN SYST CORP
CoAl-metallic oxide/carbon nano tube composite as well as preparation method and application thereof as ammonium porchlorate catalyst
InactiveCN101869837AFirmly assembledGuaranteed smooth assemblyMetal/metal-oxides/metal-hydroxide catalystsAmmonium perchlorate explosive compositionsCross-linkDispersity
The invention provides a CoAl-metallic oxide / carbon nano tube composite as well as a preparation method and application thereof as an ammonium porchlorate catalyst. The preparation method of the composite comprises the following steps of: preparing a CoAl-layered bimetallic hydroxide / carbon nano tube composite precursor by adopting a coprecipitation method and using L-cysteine as a cross-linking agent; and roasting at 500 DEG C under N2 atmosphere to convert the CoAl-layered bimetallic hydroxide in the composite precursor into CoO and a CoAl2O4 mixedoxide so as to obtain a CoAl-metallic oxide / carbon nano tube composite. The L-cysteine which is used as a cross-linking molecule can enhance the interaction between layered bimetallic hydroxide nano particles and carbon nano tubes in the precursor and improve the dispersity of the layered bimetallic hydroxide nano particles on the surfaces of the carbon nano tubes, thereby further influencing the disperse state of the CoAl-metallic oxide on the surfaces of the carbon nano tubes. The CoAl-metallic oxide / carbon nano tube composite has good thermocatalysis property, and when the composite is used as the ammonium porchlorate catalyst, a low-temperature exothermic peak decomposed by the ammonium porchlorate can be disappeared; the high-temperature exothermic peak temperature is reduced to 271.3-299.1 DEG C, and the decomposition speed is improved to 7.0-13.0mg / min.
Owner:BEIJING UNIV OF CHEM TECH
Gas generating composition
InactiveUS6779464B1Nitrated acyclic/alicyclic/heterocyclic amine explosive compositionsAmmonium perchlorate explosive compositionsNitroguanidinePerchlorate
A gas generating composition is obtained in which an amount of a combustion residue based on a unit amount of a gas generated is reduced.A gas generating composition comprising nitroguanidine, guanidine nitrate or a mixture thereof as a fuel and further an oxidizing agent. The oxidizing agent is a perchloric acid salt, a nitric acid salt or a mixture thereof, and when the oxidizing agent is ammonium perchlorate, a chlorine neutralizer is further incorporated.
Owner:DAICEL CHEM IND LTD
Method for preparing spherical organic micro-molecular monomer or compound through emulsion technology
ActiveCN106748584AImprove stabilityImprove bioavailabilityOrganic chemistry methodsExplosive working-up apparatusNonlinear optical crystalSolubility
The invention discloses a method for preparing a spherical organic micro-molecular monomer or compound through an emulsion technology. The method comprises the following steps: adding one or more organic micro-molecules to a solvent-nonsolvent, stirring the one or more organic micro-molecules and the solvent-nonsolvent, adding a surfactant, carrying out ultrasonic or mechanical emulsion after the above obtained emulsion is uniformly dispersed, precipitating crystals through adopting a crystal precipitation technology to obtain a solid and liquid mixture, filtering the mixture, washing the obtained solid, and drying the washed solid to obtain monomer or compound spherical crystals. Compounding, super refinement and spheroidization of the organic micro-molecules are combined in the invention, so the sensitivity of an energetic material is greatly reduced, the fluidity and the loading density of the energetic material are improved, and the viscosity of the crystals in the 3D printing or PBX explosive slurry of the energetic material is reduced; the change of the melting point and the solubility of a medicine improves the stability and the bioavailability of the medicine and facilitates pressing into tablets; and the crystals allow the researching and application fields of conductive organic crystals, nonlinear optical crystals, dyes, photograph raw material pigments and agrochemicals to be expanded.
Owner:SOUTHWEAT UNIV OF SCI & TECH
NiO/MXene composite material as well as preparation method and application thereof
ActiveCN107814670AIncrease migration rateEvenly dispersedPhysical/chemical process catalystsExplosive working-up apparatusNickel saltTube furnace
The invention discloses a NiO / MXene composite material as well as a preparation method and application thereof. The composite material takes MXene as a supporting carrier, and NiO particles are uniformly dispersed on the surface of MXene, wherein the mass ratio of NiO to MXene is (2.98-50):50. The preparation method comprises the following =steps: (1) etching a certain amount of MAX material intoa HF acid solution with certain concentration, so as to obtain an MXene material; (2) mixing and stirring a certain amount of nickel salt and the MXene obtained in the step (1) into a beaker while dropwise adding a NaOH solution with certain concentration, stirring for a period of time, then washing, centrifuging, and carrying out vacuum freeze drying; and (3) putting a mixture prepared in the step (2) into a tubular furnace, and calcining in nitrogen atmosphere, so that the target product is obtained. The NiO / MXene composite material is applied to thermal decomposition of ammonium perchlorate(AP) and shows better catalytic effect; meanwhile, preparation technology is simple, and the NiO / MXene composite material has a good application prospect.
Owner:NANJING UNIV OF SCI & TECH
Thermoplastic composite solid propellant and preparation method thereof
ActiveCN107867962AAchieve moldingImprove securityNon-explosive fillers/gelling/thickening agentsAmmonium perchlorate explosive compositionsInherent safetyPlasticizer
The invention provides a thermoplastic composite solid propellant applicable to a solid booster. The thermoplastic composite solid propellant is prepared from components in percentage by mass as follows: 55%-70% of an oxidant, 10%-20% of a thermoplastic resin adhesive, 10%-20% of a plasticizer, 5%-20% of metal fuel and 3%-8% of auxiliaries. According to the prepared thermoplastic composite solid propellant, relative independence of mixing and pouring, integrated formation of the propellant and secondary formation of engine charge can be realized according to temperature adjustment, and melt mixing and formation of the thermoplastic propellant can be realized at relatively low temperature lower than 90 DEG C, so that inherent safety of preparation of the thermoplastic propellant is greatlyimproved; compared with a traditional thermosetting propellant, crosslinking curing process is omitted, technological process is shortened, recovery and repeated processing of waste products can be realized, and production cost is reduced. The thermoplastic propellant is prepared with a hot melt mixing-cooling formation technology, and application of components absorbing moisture easily in the propellant is realized.
Owner:HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
Insensitive propellant composition
InactiveUS20120227875A1Improved SCO propertySuitable for useAmmonium perchlorate explosive compositionsAmmonium perchlorateRocket
The present invention relates to a propellant composition which comprises hydroxy-terminated polyether (HTPE), N-butyl-(2-nitratoethyl)nitramine (BuNENA) and ammonium perchlorate (AP) and is insensitive to impact and thermal reactions and thus suitably used for a solid rocket propulsion unit.
Owner:AGENCY FOR DEFENSE DEV
N-ferrocenylmethyl-3-amino-1,2,4-triazole energy-containing transition metal complex and preparation method thereof
ActiveCN108558957AEasy to migrateSolve volatileMagnesium fertilisersMetallocenesBurn rateNitrogen gas
The invention discloses an N-ferrocenylmethyl-3-amino-1,2,4-triazole energy-containing transition metal complex and a preparation method thereof. The structural formula of the complex is as shown in the description, wherein M represents Cu, Zn, Mn, Ni, Co, Cd or Fe, L is 1H, 1'H-(5,5'-bistetrazole)-1,1'-diol dianion, and x is an integer from 0 to 3. The complex disclosed by the invention is simplein preparation method, low in cost and high in yield and has better burning catalysis effect on main components (ammonium perchlorate and hexogen) of a composite solid propellant; the N-ferrocenylmethyl-3-amino-1,2,4-triazole ligand in the complex has high nitrogen content, has higher positive enthalpy of formation and has synergistic catalysis effect with transition metal ions; and by addition of energy-containing compound 1,1'-dihydroxy-5,5'-bistetrazole disodium salt tetrahydrate, the sensitivity of a burning rate catalyst can be reduced, the energy can be supplied for the solid propellant, and the decomposed and released nitrogen gas is friendly to the environment.
Owner:SHAANXI NORMAL UNIV
Preparation method of high-heat explosive containing cerium hydride
ActiveCN103980073ASimple production processSimple preparationNitroparaffin explosive compositionsNitrated acyclic/alicyclic/heterocyclic amine explosive compositionsAdhesiveCerium
According to the invention, metal hydride and an oxidizing agent are mixed, and under the action of an adhesive, the mixture is granulated to prepare a high-heat mixed explosive. The explosive contains the following components, by mass, 50-80% of cyclonite (RDX) and octogen (HMX) or hexanitrohexaazaisowurtzitane (CL-20), 10-25% of an oxidizing agent, 10-25% of metal hydride and 1.0-5% of a binder. According to the invention, metal hydride is added into the explosive for the first time so as to obtain the high-heat high-power explosive with the value of explosion heat being 14000-22000kJ / kg. The explosive has excellent sensitivity, and storage life of the explosive reaches 30 years. The explosive is suitable for charge by using press-fitting technology.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +1
Triazolyl-aminotriazine compositions, including salts
The present invention includes a salt compound having the chemical formula: having a tricyclic structure with the third ring having either six or seven atoms.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Preparation method of fluorine polymer/metal composite energy-containing material
ActiveCN109956844ASimple operation processEasy to prepare in batchesExplosive working-up apparatusAmmonium perchlorate explosive compositionsDetonationDecomposition
The invention discloses a preparation method of a fluorine polymer / metal composite energy-containing material. According to the preparation method, ammonium perchlorate is doped in a fluorine polymermetal energy-containing system through solution crystallization method so as to obtain a novel composite energy-containing material. According to the preparation method, ammonium perchlorate decomposition is adopted to generated a gas product for enhancing the system pressure output and combustion reaction performance, at the same time, the gas obtained through ammonium perchlorate decomposition and reaction product carbon from a fluorine polymer metal system are subjected to oxidation reaction, energy and pressure release is accelerated, so that the fluorine polymer metal energy-containing system energy and combustion reaction characteristics are improved obviously. The preparation method is capable of improving the energy and pressure output of the fluorine polymer metal energy-containing system, and combustion reaction rate is converted from slow combustion to detonation and blast. Doping is adopted to form the novel energy-containing system, and it is possible for the novel energy-containing system to be used in fields such as solid propellant, metallized explosive, and gas generators.
Owner:INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
Gas generating composition for inflator containing melamine cyanurate
To provide a gas generating composition for air bag which is low in toxicity, large in burning rate, and low in combustion temperature. Gas generating compositions comprising (a) melamine cyanurate or a mixture of melamine cyanurate and nitrogen-containing organic compound and (b) oxygen-containing oxidant, and gas generating compositions comprising (c) binder and (d) additive are provided.
Owner:DAICEL CHEM IND LTD
Propellant formulation
InactiveUS7011722B2Improve balanceEasy to processExplosive working-up apparatusAlkali metal salt explosive compositionsMean diameterParylene
A solid heterogeneous, high performance rocket propellant, operable at high pressure with a burn rate relatively insensitive to changes in pressure and temperature, is disclosed. The propellant includes a binder formed from the reaction of a hydroxy terminated polybutadiene with a diisocyanate, ammonium perchlorate as an oxidizer, aluminum as a fuel, and iron oxide as a burn rate modifier. The ammonium perchlorate is a multimodal mixture of large paryticles with a weight mean diameter of about 70 to about 110 μm and small particles having a weight mean diameter of about 7.5 to about 15 μm. The propellant may also include bonding agents, curing catalysts, a plasticizer, antioxidant / peroxide scavengers, and pot life extenders.
Owner:NORTHROP GRUMMAN SYST CORP
Safe ignition powder and preparation method thereof
ActiveCN105152824ASimple processEasy to operateAmmonium perchlorate explosive compositionsCalcium peroxideOxidizing agent
The invention relates to a safe ignition powder and a preparation method thereof, belonging to the field of energetic materials. The safe ignition powder comprises 20 to 40% of carbon black, 30 to 50% of an oxidizing agent, 15 to 30% of coated calcium peroxide, 5 to 15% of hydroborate and 1 to 8% of a binder A. The safe ignition powder provided by the invention has high safety; and coated calcium peroxide prevents reaction of calcium peroxide with hydroborate and obstructs reaction of calcium peroxide with other components caused by collision and friction, so sensitivity is reduced, and safety in transportation and usage of the safe ignition powder is improved. The preparation method is simple, does not need complex equipment, is simple and easily practicable to operate and facilitate continuous production.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +1
Method for improving mechanical performance of HTPB (hydroxyl-terminated polybutadiene) propellant and prepared HTPB propellant
ActiveCN107867961AImprove mechanical propertiesIncrease maximum elongationNon-explosive/non-thermic compositionsAmmonium perchlorate explosive compositionsAl powderPlasticizer
The invention discloses a method for improving mechanical performance of an HTPB (hydroxyl-terminated polybutadiene) propellant and the prepared HTPB propellant. AHTPB (anionic HTPB) is added to the HTPB propellant to replace part of free-radical HTPB, and a curing catalyst is added, wherein the AHTPB refers to bifunctional HTPB synthesized with an anionic method. The propellant is prepared from components in percentage by mass as follows: 1.0%-10.0% of AHTPB, 1.0%-10.0% of HTPB, 0.5%-1.5% of a curing agent, 55.0%-85.0% of an oxidizing agent AP, 5.0%-20% of metal fuel Al powder, 1.0%-6% of a plasticizer, 0.01%-0.1% of the curing catalyst and the like. The mechanical performance of the propellant can be improved significantly, the processing properties and the aging performance of the propellant can be improved while other properties of the propellant are not affected, and the increasingly high requirements of all kinds of rockets and strategic and tactical missiles for the mechanical performance of the propellant can be met.
Owner:HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
Preparation method and application of supported copper oxide catalyst
ActiveCN107029769AAdvantage Catalytic EfficiencyAdvantage ReusabilityCatalyst carriersCatalyst activation/preparationCopper platingCopper oxide
The invention discloses a supported copper oxide catalyst. A preparation method of the supported copper oxide catalyst includes weighing titanium powder, aluminum powder, titanium carbide powder and activated carbon powder according to the mole ratio of Ti to Al to C to TiC being 1.5:1.0:0.5:0.5, and subjecting the powder to microwave sintering to obtain high-purity compact Ti2AlC powder; grinding and sieving the Ti2AlC powder obtained after microwave sintering by an agate mortar to obtain 500-mesh powder; allowing the powder to react with hydrofluoric acid with the concentration of 20% for 6 hours, and performing deionized-water centrifugal drying to obtain a Ti2C material; subjecting the Ti2C to electroless copper plating and thermal oxidation to obtain the Ti2C-CuO-Cu2O catalyst. The supported copper oxide catalyst has the advantages that catalytic efficiency of ordinary copper oxide catalysts can be improved, high-temperature thermal decomposition temperature of ammonium perchlorate can be reduced remarkably, combustion efficiency can be improved, and catalytic efficiency is better than that of other catalysts.
Owner:WUHAN UNIV OF TECH
Method for preparing micro-ammonium perchlorate
ActiveCN105253857AGood dispersionRegular shapePerchloratesAmmonium perchlorate explosive compositionsCalcium perchlorateDispersity
The invention relates to a method for preparing micro-ammonium perchlorate. The method comprises the specific steps that an ammonium perchlorate saturated solution containing a surface active agent is prepared; an anti-solvent is conveyed to enter an external channel of a flowing focused type micro-mixer, ultrasound is started, a saturated solution is conveyed to enter an internal channel of the flowing focused type micro-mixer to be mixed with the anti-solvent; the obtained product is filtered and dried to obtain the micro-ammonium perchlorate with the good dispersity. The inner diameter of the internal channel, the distance between the internal channel and the external channel, the standing time of total materials inside the external channel, the volume ratio of the solvent to the saturated solution to the anti-solvent, ultrasonic parameters and the like are adjusted to prepare the micro-ammonium perchlorate with the controllable average grain diameter being 0.3-2 micrometers and the regular morphology. The process of preparing the micro-ammonium perchlorate by means of the flowing focused type micro-mixer is continuous and controllable, and the method has the advantages of being simple in technology, rapid, high in yield and safety performance, free of amplification effects and the like.
Owner:NANJING UNIV OF TECH
Discontinuous crystallization unit for the production of ball-shaped crystals
InactiveUS20170128854A1Easy to controlPolycrystalline material growthFrom normal temperature solutionsCooling curveCirculator pump
Owner:ERUCA TECH SRO
Method for reducing charge retention properties of solid propellants
InactiveUS8025010B1Improve conductivityLower electrical resistivityAerial display rocketsLoomsCharge retentionPolymer
A quaternary salt is added at low concentrations to a solid propellant, thereby increasing the conductivity of the polymeric binder to provide for safe discharge of static electricity at relatively low potentials.
Owner:BANK OF AMERICA N A
Formula for reducing high pressure exponent of solid propellant
InactiveCN106336334AHigh Smoke Signal CharacteristicsGood dispersionAmmonium perchlorate explosive compositionsFOX-7Adhesive
The invention relates to a formula for reducing high pressure exponent of solid propellant and improving the performances of a rocket engine fuel. The formula is characterized in that 20-30% of an adhesive and a plasticizer, 0-15% of an oxidant ammonium perchlorate (AP), 30-45% of nitramine explosive, 10-30% of insensitive high explosive FOX-7 with the granularity of 8-200 [mu]m, 1.0-2.0% of a curing agent and 0.5-2% of a combustion stabilizing agent are added to a solid propellant system. The insensitive high explosive FOX-7 with good dispersibility and component compatibility, the AP, the adhesive and the plasticizer are used to guarantee the signal characteristic and the energy, technology and mechanical performances of the propellant, reduce the high pressure exponent of the propellant and guarantee the working reliability of an engine. The formula has the advantages of scientific formula, convenience in production, obvious effect and stable performances.
Owner:HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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