181results about "Nitrated explosive compositions" patented technology

Propellant compositions include an energetic binder, such as nitrocellulose, and a stabilized, encapsulated red phosphorous as a ballistic modifier. The propellant composition may additionally include an energetic plasticizer, such as nitroglycerine. For example, the propellant composition may be formed by mixing a double or multi base propellant that includes nitrocellulose plasticized with nitroglycerine with the stabilized, encapsulated red phosphorus. The propellant compositions may be substantially lead-free and may exhibit improved ballistic properties. Methods of forming such propellant compositions and an ordnance device including such propellant compositions are also disclosed.

High nitrogen gas generant compositions, useful for inflating passenger restraint gas inflator bags, comprise a nitrogen rich coordination compound selected from coordination complexes comprised of anionic nitro and nitrito ligands coordinated with a transitional metal template, and nonmetallic or nonmetallic / metallic cations. The gas generant compositions generate relatively more gas and less solids, and are safer than known gas generant compositions. Certain gas generant compositions ignite at lower autoignition temperatures thereby facilitating the use of an aluminum or light weight metal pressure vessel. Other gas generants self-deflagrate eliminating the need for other constituents in the composition. Novel methods for the synthesis of nonmetal derivative coordination complexes, guanidine and hydrazine for example, are also presented.

A reactive material that includes at least one of a fuel, an oxidizer, and a class 1.1 explosive and is formulated for use in a reactive material projectile. The reactive material is formulated to provide at least one of an overpressure of greater than approximately 9 pounds per square inch at a radial measurement of 12 inches from a point of impact on a target, a hole greater than approximately 2 square inches at an optimum penetration level in a target, and pressure, damage, and a flame when the reactive material bullet impacts a target. The fuel may be a metal, a fusible metal alloy, an organic fuel, or mixtures thereof. The oxidizer may be an inorganic oxidizer, sulfur, a fluoropolymer, or mixtures thereof. A reactive material projectile having the reactive material disposed therein is also disclosed.

A spontaneous firing explosive composition for use in a gas generator for an airbag containing a fuel, an oxidizer, a combustion modifier, and a binder.

The invention discloses a modular smokeless firework ammunition capable of improving the dampproof performance. The modular smokeless firework ammunition comprises nitrocotton which has a large number of tiny holes, a block-type appearance and dampproof performance. The preparation method for the modular smokeless firework ammunition capable of improving the dampproof performance comprises the following steps of: preparing granular micro-hole firework ammunitions; mixing an organic adhesive with the dampproof characteristic, an ignition performance enhancer and the granular micro-hole firework ammunitions; preparing an ammunition block with a specific shape by the mixed materials; then attaching a layer of adhesive thin film with the dampproof performance to the surface of the ammunition block by an immersing or coating method, wherein the adhesive coated on the surface is the same as that of the adhesive for forming the modular ammunition; and finally drying. By adopting the waterproof adhesive and the preparation method, the dampproof performance of the modular smokeless firework ammunition can be improved greatly, and the problem that the firing effect of a firework product prepared by the smokeless firework ammunition is unstable is solved.

The invention discloses modularized bud-opening powder for a display shell. The bud-opening powder includes a nitro-cotton component. The internal part of the bud-opening powder has a large number of micropores which are blocky in shapes. The sizes and the shapes of the micropores are determined according to the diameter and the shape of the display shell and a setting shape needing to be reached. The method for preparing the modularized bud-opening powder for the display shell comprises the following steps of: preparing firework powder with granular micropores firstly; and then, bonding and forming the firework powder with the granular micropores to prepare a powder block matched with the display shell, wherein the process of bonding and forming the modularized powder comprises the following steps of: mixing a binder for forming, an ignitability reinforcing agent and the firework powder with the granular micropores; then, preparing the powder block in a specific shape from the mixed materials; and finally, drying the powder block. According to the modularized bud-opening powder, the problem of insufficient combustion of the bud-opening powder or powder residuals can be solved; the firing rate of bright beads is improved; the smoke generated in the bud-opening process is greatly reduced; and the process safety of firework products in the production process can be improved.

The invention relates to a novel process for the production of casting powder with high ntirocellulose content, and casting multiple-base rocket propellant including nitroglycerin formulated from such casting powder.

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.

The invention relates to a coated priming composition-free nail-shooting ammunition pellet formula and preparation method thereof. The coated priming composition-free nail-shooting ammunition pellet formula comprises, by weight, 89.80 to 99.78% of nitrocellulose, 0.20 to 0.75% of a stabilizing agent, 0.01 to 0.45% of a binder, 0.01 to 3.0% of a coating material, a solvent with an amount<=1.0%, and water with an amount <=5.0%. According to the preparation method, nitrocellulose containing water is taken as a base material; the nitrocellulose containing water, the solvent, the stabilizing agent, and the binder are delivered into a gelling kneading machine for gelling after a certain time of mixing; an obtained mixture is pressed into particles, the particles are dried and are subjected to moulding using a tablet machine so as to obtain pellets; and the pellets are coated with the coating material in a coating kettle, and are subjected to secondary drying. The obtained coated priming composition-free nail-shooting ammunition pellets possess excellent humidity resistance, and problems of the prior art, that drying efficiency is low, energy consumption is high, a large amount of dust is generated, combustion explosion is easily caused, and technology safety is poor, are solved.

The invention provides a catalyst for partial oxidation of hydrocarbon in the presence of a reducing compound, the catalyst comprising ultra-fine gold particles immobilized on a titanium-containing oxide, and a process for preparing an oxygen-containing organic compound, the process comprising the step of oxidizing hydrocarbon with oxygen in the presence of the above catalyst and a reducing compound.

The invention discloses a preparation method of waste paper nitrocellulose blasting powder, and belongs to the field of production of waste paper nitrocellulose blasting powder. The preparation method sequentially comprises the following steps: removing impurities in waste paper; drying cellulose; carrying out esterification reaction; carrying out invariability treatment; dehydrating; carrying out forming treatment; drying and packaging to obtain a finished product of the waste paper nitrocellulose blasting powder. The preparation method is used for preparing the nitrocellulose blasting powder from waste paper and can be used for preparing the blasting powder which is low in cost, high in energy and less in environment pollution after combustion, and black powder greatly used in the current firework and cracker industry is replaced with the blasting powder, so that the environment pollution caused when fireworks and crackers are set off is greatly relieved, and meanwhile, the entertainment and practicability of the fireworks and crackers set off by people are achieved.

A non-shell jet nail bullet is made up of mitrocellulose, stabilizer, solvent and chemical pigment through dissolving the stabilizer in solvent, kneading it with nitrocellulose, colloidizing, adding chemical pigment, stirring while granulating, backing and die pressing.

The invention discloses a modularized smokeless firework propellant which contains nitrocotton, a large quantity of tiny holes are arranged in the propellant and have block shape, and the size and shape of the holes are determined according to the caliber and shape of a firework transmitting barrel. The preparation method of the modularized smokeless firework propellant comprises the following steps: firstly mixing organic bond with granular pore firework powder, secondly preparing block-shaped solid by using the mixed materials through mould pressing, and then expelling volatilizing components in the block-shaped medicine by stoving. Compared with the granular pore firework powder, the modularized smokeless firework propellant can thoroughly solve the problem of propellant residue of granular propellant feeding, and simplifies the operation of transmitting propellant feeding, so that the stability and consistency of an end firework product are better; and in addition, the modularizedsmokeless firework propellant also avoids the mechanical friction action among granules, and improves the safety of manufacture, transmission, and storage of the firework products.

A reactive material that includes at least one of a fuel, an oxidizer, and a class 1.1 explosive and is formulated for use in a reactive material projectile. The reactive material is formulated to provide at least one of an overpressure of greater than approximately 9 pounds per square inch at a radial measurement of 12 inches from a point of impact on a target, a hole greater than approximately 2 square inches at an optimum penetration level in a target, and pressure, damage, and a flame when the reactive material bullet impacts a target. The fuel may be a metal, a fusible metal alloy, an organic fuel, or mixtures thereof. The oxidizer may be an inorganic oxidizer, sulfur, a fluoropolymer, or mixtures thereof. A reactive material projectile having the reactive material disposed therein is also disclosed.

Ammonium dinitramide based liquid monopropellants exhibiting stabilised combustion characteristics and improved storage life, containing ammonia, a base weaker than ammonia, or a base which is sterically hindered, added in an amount of 0.1 to 5% of the total weight of the other components of the propellant.

The invention relates to a method for preparing a primer mixture-free powder charge with high mechanical sensitivity, in particular to a primer mixture-free and shell-less nail shooting pill for a nail shooting apparatus, and belongs to the technical field of fixation of shooting nails. Cellulose nitrate with low fineness, high water content and high nitration degree is stabilized and then used as a base material of the powder charge, cellulose ether with high or ultrahigh viscosity is prepared into an aqueous solution, and the aims of bonding and granulating are fulfilled. A technical path of adding sensitive substances is not adopted in the method, and the technology is improved in a mode of improving the formula of the powder charge, the fineness of powder and the density of tablets. Under the action of certain mechanical excitation pulse, satisfactory mechanical sensitivity and percussion performance can be obtained, so that the contradiction of the conventional product among processing property and safety in production and reliability in use is overcome.

The invention discloses a smokeless type firework shell opening ammunition capable of improving the ignition capacity and a preparation method for the opening ammunition. An ignition performance enhancer which has relatively high melting point and can improve the ignition capacity without influencing the environment friendliness is added during preparation of the modular opening ammunition for a firework shell. The method comprises the following steps of: preparing granular micro-hole firework ammunitions; and adhering the granular micro-hole firework ammunitions to form the modular smokeless opening ammunition. The adhering forming process of the modular smokeless opening ammunition capable of improving the ignition capacity comprises the following steps of: mixing an adhesive for forming, an ignition performance enhancer and the granular micro-hole firework ammunitions; preparing an ammunition block by the mixture according to a die-casting method; and finally drying. The modular opening ammunition remarkably improves the ignition capacity of a bead without influencing the environment friendliness of a firework product and the process safety for manufacturing a firework shell.

Provided is a hypergolic bipropellant formed by combining a IL fuel having a dicyanamide anion and a nitrogen-containing, heterocyclic-based cation with an oxidizer for such fuel.

The heat resisting and pressure resisting safe electric detonator is used for explosive charge or blasting cartridge in well perforation, seismic prospecting, etc. and relates to blasting technology. The heat resisting and pressure resisting safe electric detonator has high temperature igniting powder and high temperature explosive for the high heat resistance; double-layered case structure with increased steel outer shell, conic aluminum plug and rubber plug of high temperature fluoric rubber for raised structure sealing and pressure resisting performance; and Ni-Cr wire for ignition for raised antistatic safety performance. The present invention has heat resisting performance up to 230 and pressure resisting performance up to 60MPa for safe detonation in well.

The present invention relates to a 5,5'-bistetrazole-1,1'-dioxide metal salt and a synthesis method thereof, and belongs to the high-energy nitrogen-rich compound synthesis in the energy-containing material field. According to the present invention, glyoxime is adopted as a raw material, N-chlorosuccinimide chlorination, sodium azide azidization and ring formation are performed to obtain a skeleton 5,5'-bistetrazole-1,1'-dihydroxy dehydrate, and the 5,5'-bistetrazole-1,1'-dihydroxy dehydrate reacts with a water-soluble metal ion compound in a water medium to obtain the different types of the 5,5'-bistetrazole-1,1'-dioxide metal salts; and the method has characteristics of less synthesis steps, simple process, and high product yield.

The invention discloses a continuous preparation method for energetic polymer microspheres. The method comprises the following steps: dissolving an energetic polymer material containing nitrocotton in ethyl acetate at room temperature to obtain a polymer sol containing the nitrocotton; then continuously conveying the polymer sol and an aqueous solution containing a dispersing agent in parallel to mix in a dynamic mixer for dispersing; continuously dispersing the polymer sol to form spherical liquid drops; conveying the mixed material to a static mixer through a continuous conveying device to continuously mix with the aqueous solution containing a dehydrating agent or mother liquor recycled by a solvent; hardening the spherical liquid drops gradually in a conveying process to form energetic polymer particles; and separating and drying the energetic polymer particles to obtain energetic polymer microspheres. The method has the characteristics of high preparation efficiency, stable finished product performance, easy and convenient operation, safety and environment friendliness and is applicable to batch preparation of a variety of micron-scale and submicron-scale energetic polymer microspheres containing nitrocotton.

The invention discloses a preparation formula and a preparation method of anti-abrasion waterproof percussion-composition-free nail-shooting pill tablets. The anti-abrasion waterproof percussion-composition-free nail-shooting pill tablets comprise high-explosive nitro-cotton, potassium permanganate, a granulation material, an anti-abrasion waterproof material, coloring agents, solvent and water. The solvent and the water are solvent and water which are left in the preparation process. The characteristic that potassium permanganate is decomposed and is changed from bright red to dark brown when heated is used for visual control in the production process. The coloring agents are used in the formula, tablets with different explosive forces are distinguished according to different colors of the coloring agents, and safety during construction or after construction is improved. The water content in the tablets is controlled in the production process, safety in the production process is ensured, and tabletting forming of the tablets is convenient. Meanwhile, in the vacuum freeze-drying procedure, porosity of the tablets is guaranteed, oxygen supply during explosions can be improved due to proper porosity, the explosive force is improved, and the dud rate is reduced.

Non-lethal payloads including at least one of boron and silicon, at least one fuel, and at least one oxidizer. The non-lethal payload may be a single-component or dual-component payload. Methods of producing the non-lethal payloads are also disclosed.

The invention provides a nail shooting pill for a nail fastening device and a manufacturing method of the nail shooting pill. The nail shooting pill comprises a nail shooting pill body and an embedded film, and the nail shooting pill body is wrapped with the embedded film. With energetic materials as the criterion, the nail shooting pill body is prepared from, by weight, 100% of the energetic materials, 30%-120% of a solvent, and 5%-25% of supplementary water. The embedded film wrapping the nail shooting pill body is prepared from, by the weight of the nail shooting pill body, 0.01%-4% of sealing agents. The preparation method of the nail shooting pill mainly comprises the technological steps of wet plasticization, drying, forming, blocking and the like. The nail shooting pill is provided with the multifunctional embedded wet film prepared from the sealing agents and has good water-proof, damp-proof, lubricating and burnout-proof functions and other functions.

Employing non-energetic MCPs as hosts (fuel) for the adsorption of oxidant molecules enables the intimate and molecular scale mixing of fuel and oxidizer on a level that is not commonly achievable in traditional energetic mixtures. The adsorption of the oxidants into MOF-5 resulted in increased heat released upon decomposition, which shows potential for utilization of this method as a platform to develop high-performance primary energetic materials.

The invention uses the indirect method with the nitrogen substituted fullerene pyrrolidine derivative and the nitro-halide benzene as the raw material; under the condition of the phase-transfer catalyst and weak alkali, the solid phase is heated to synthesize a nitryl fullerene derivative; the initial exploration has been done on the stability of the nitryl fullerene derivative so as to acquire an insensitive additive which not only has the energy insensitivity but also has the certain energy contribution; the insensitive additive can be used in the materials containing the energy such as the explosive, propellant, fire supplies and so on.

The present invention relates to a gas generator which is a core component of an inflator used for expanding an airbag for alleviating the impact on a passenger occuring during a vehicle collision, and provides the gas generator capable of generating a high combustion rate and a large quantity of gas. The present invention provides a gas generator having a combustion rate of 20 mm / sec or higher, a generated gas amount of 33 moles / kg or higher and a combustion temperature of 2300 K or lower by using: copper diamine dinitrate (CDD) as a principal oxidizing agent; basic copper nitrate (BCN) as an auxiliary oxidizing agent; guanidine nitrate (GN) as a principal fuel; 5-aminotetrazole (5-AT) as a combustion-rate-increasing fuel; metal oxide and a combustible catalyst as catalysts; and an additive. Also, the internal pressure of the inflator manufactured by using the gas generator is reduced to 100 bar, and thus the inflator is manufactured so as to weigh 250g which is a remarkable reduction in comparison with 440g of existing product A and 330g of existing product B.

Provided is a gas generating composition with a low combustion temperature, good ignition ability, and a high heat resistance.The gas generating composition includes: (a) a fuel; (b) an oxidizing agent including a basic metal nitrate; (c) a basic metal carbonate; and (d) a binder. The fuel of the component (a) includes melamine cyanurate (MC) and nitroguanidine (NQ), with a ratio (MC / NQ) of contents of MC and NQ being within a range of 0.3 to 1.5. The binder of the component (d) is one or two or more selected from: (d-1) starch, etherified starch, methyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, and hydroxyethyl cellulose; (d-2) poly(vinyl alcohol), polyvinyl ether, polyethylene oxide, polyvinyl pyrrolidone, and polyacrylamide; (d-3) guar gum, etherified guar gum, and tamarind gum.

The color fireworks flash sheets are produced with nitro guanidine potassium, nitrocellulose, chlorinated paraffin 70, magnesium powder and coloring agent and through adhesion with organic adhesive and balling. It is used mainly in toy rocket, spraying flower and other fireworks product to produce blasting, flashing and sounding effects. It has stable storing performance, low production cost, long flash time and good environment protecting performance. It may be used as the substitute of available flash sheets.