21results about "Non-explosive stabilisers" patented technology

Disclosed herein are exothermic reaction mixtures that can be used for copper-based thermite reactions. The disclosed exothermic reaction mixtures can be advantageously formulated with synthetically made copper oxide(s), which can improve consistency and stability of thermite reactions. An example exothermic reaction mixture includes an alloy comprising copper and aluminum and a metal oxide comprising Cu2O and CuO. Also disclosed are methods of preparing the exothermic reaction mixture and methods of welding that include the exothermic reaction mixture.

The invention provides a method for preparing a high-explosive hot-pressing composite explosive from aluminum-boron alloy microspheres. Comprising the following steps: step 1, preparing spherical submicron aluminum-boron alloy microspheres; and 2, preparing the high-explosion-heat composite explosive column. According to the preparation method, the metal aluminum powder and the amorphous boron powder are alloyed through a high-energy mechanical ball milling method under the action of long-time and violent mechanical force, the aluminum-boron alloy microspheres with the high sphericity degree are prepared, the microcosmic grain size of the metal aluminum powder and the boron powder is reduced to the nanometer size, and therefore the aluminum-boron alloy microspheres with the high sphericity degree are obtained. The aluminum-boron alloy microspheres with the nanoscale microcosmic grain size have very low ignition temperature and very high combustion speed, so that the aluminum-boron alloy microspheres can sufficiently release most heat in the transient detonation process of the high explosive, and finally, the actually measured explosion heat of the composite explosive is very close to the theoretically calculated explosion heat. In addition, the spherical structure of the aluminum-boron alloy microspheres is very beneficial to charging, and is more beneficial to reducing the mechanical sensitivity of the composite explosive.

A fuel composition for producing an emulsion explosive composition comprises a mixture of a liquid fuel and an emulsifying agent, wherein the emulsifying agent comprises nanoparticles in a weight % that is from about 0.05% to about 2% of the weight of the fuel composition.

The invention belongs to the technical field of stabilization of nitrate ester compounds, and particularly relates to application of poly (p-phenylenediamine) as a stabilizer for the nitrate ester compounds, and the addition amount of the poly (p-phenylenediamine) is 2.9%-3.1% on the basis of the total weight of the nitrate ester compounds. The preparation method of the poly (p-phenylenediamine) comprises the following steps: taking ammonium persulfate as an oxidizing agent, taking p-phenylenediamine as a monomer, adopting a spiral gas-solid two-phase flow technology, and enabling raw material solid particles to mutually rub and collide to initiate an oxidative polymerization reaction, so as to prepare the poly (p-phenylenediamine). The poly (p-phenylenediamine) has the characteristics of low price, easiness in synthesis, no toxicity, excellent nitrogen oxide absorption capacity and the like, has good compatibility with nitrate ester compounds, can effectively reduce the autocatalysis phenomenon and improve the long-term stability of the nitrate ester compounds, can avoid the toxicity problem of the traditional amine stabilizer when being used as the stabilizer, and has the advantages of low cost, low cost and the like. The environment and human health are facilitated.

The invention discloses a synthesis method of an alcohol amine polymer emulsifier for emulsion explosives, which comprises the following steps: (1) carrying out 1, 4 addition reaction on methyl acrylate and acetyl bromide to obtain methyl 3-bromopropionate, and reacting with diethanol amine to generate methyl N, N-dihydroxyethyl-3-aminopropionate; and (2) carrying out esterification reaction on the N, N-dihydroxyethyl-3-amino methyl propionate and polyisobutylene succinic anhydride to prepare the polyisobutylene succinic anhydride-N, N-dihydroxyethyl-3-amino methyl propionate. And (3) carrying out esterification reaction on the polyisobutylene succinic anhydride-N, N-dihydroxyethyl-3-amino methyl propionate and triethanolamine to prepare the alcohol amine polymer emulsifier. According to the invention, the problem of poor product singleness caused by complex molecular configuration of polyalkenyl ester polymer emulsifiers of polyhydric alcohols and polyhydric alcohol amines can be solved, and the problem of large quality fluctuation of the product in industrial production can be controlled. By adopting the new method, the high-quality alcohol amine polymer emulsifier can be continuously and quickly produced, and the produced emulsifier has the characteristics of good emulsifying capacity, high emulsion forming speed and the like.

A composition for forming a hydrogen peroxide-based emulsion explosive which composition comprises; an oxidizer-phase comprising at least 15% by weight of hydrogen peroxide and at least 15% by weight of water, a fuel-phase comprising at least one oil type fuel, an emulsifier and at least one finely divided solid adsorbent, wherein the oxidizer-phase is discontinuously dispersed throughout the continuous fuel-phase. A method of preparing an emulsion type explosive composition is also disclosed.

The application discloses a liquid stabilizer for nitrate compounds and a preparation method thereof, wherein phenol derivatives, glycidyl ethers and alkaline substances are added into an aqueous organic solvent under stirring at 20-30 DEG C, the mixture is stirred uniformly, then the temperature is raised to 40-80 DEG C in an oil bath to make ethanol reflux, the stirring reaction is carried out for 4-40 hours, then an extraction solvent is added after cooling, the mixture is stirred intensively and then is left to separate into layers, the extraction liquid is washed with 1M sodium hydroxide aqueous solution for three times, the organic solution layer is collected after separation and the water layer is discarded, the organic solution layer is washed with saturated sodium chloride solution for three times, and ethyl acetate is removed by rotary evaporation to obtain the product as the liquid stabilizer. The liquid stabilizer contains a large number of ether bond structures in the molecular structure, thus becoming an oxygen-containing stabilizer, and after being compounded with nitrate compounds, the liquid stabilizer less affects the fast combustion performance of the nitrate compounds.

A method of using cerium metal complexes / compounds to modify the burning rate of solid rocket motor propellants by preparing a double-based propellant composition including cerium metal ion.

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.

The invention relates to the use of a hydrogen peroxide (H2O2) solution stabilized with dipicolinic acid and a phosphonic acid compound in combination with a copolymer of propylene glycol and ethylene glycol for the preparation of stable gels or emulsions. Furthermore, the invention relates to a gel or emulsion containing hydrogen peroxide, dipicolinic acid, phosphoric acid compound and a copolymer of propylene glycol and ethylene glycol, and to the use of the gel or emulsion in rock fragmentation

The present disclosure provides for an explosive inhibitor composition which can be used to form explosive compositions comprising ammonium nitrate which are less susceptible to unwanted detonations due to the reaction between the ammonium nitrate and pyrite and / or other reactive sulphide minerals. The inhibitor composition comprises at least one component which contributes to the inhibition of this unwanted reaction and improves safety in using such explosive compositions with reactive ground.

The present invention relates to a composition in the form of a powder comprising: a polymer A which is a fluorinated polymer A1, a polyamide A2 or a polyamide-polyether block copolymer A3 or a mixture thereof; and a compound having an oxygen balance of less than 60.

The invention relates to a propellant composite for a safety device, obtainable by a method comprising the following steps: providing at least one pyrotechnic material and at least one stabilizer selected from the group consisting of monosaccharides, disaccharides, and sugar alcohols, as well as combinations thereof, wherein the at least one pyrotechnic material comprises at least one fuel and at least one oxidizing agent; and grinding the at least one pyrotechnic material and the at least one stabilizer to obtain the propellant composite. Furthermore, a method for producing the propellant composite and a propellant element are proposed.

The invention discloses a preparation method of a transient thermal expansion stone cracking agent. The preparation method comprises the following steps: dissolving magnesium oxide powder into a perchloric acid-phosphoric acid mixed solution to obtain a first mixture, adding components such as a bituminous coal mixture, stirring to obtain a second mixture, adding potassium nitrate powder, stirring, and filtering to obtain filter residues; meanwhile, preparing a silane-starch glue conjugate, adding calcium peroxide, stirring, drying to obtain a starch glue-calcium peroxide modifier, and finally mixing, kneading, kneading, granulating and drying the silane-starch glue conjugate and the starch glue-calcium peroxide modifier to obtain the stone cracking agent. The transient thermal expansion stone cracking agent prepared by the invention can still be stably and efficiently ignited when being stored in a high-humidity environment, so that the ignition reliability in actual use is ensured.

Disclosed herein are exothermic reaction mixtures that can be used for copper-based thermite reactions. The disclosed exothermic reaction mixtures can be advantageously formulated with synthetically made copper oxide(s), which can improve consistency and stability of thermite reactions. An example exothermic reaction mixture includes an alloy comprising copper and aluminum and a metal oxide comprising Cu2O and CuO. Also disclosed are methods of preparing the exothermic reaction mixture and methods of welding that include the exothermic reaction mixture.

The present invention relates to a composition in powder form comprising a polymer A, which is a fluoropolymer A1, a polyamide A2 or a polyamide-polyether block copolymer A3 or mixtures thereof, and a compound having an oxygen balance of less than 60.

The present application relates to a kind of 3-nitro-1,2,4-triazole-5-ketone / zirconium dioxide composite nano energetic material and its preparation method, the material is composed of "core" and "shell" two parts."Core" is NTO particle, and 3-nitro-1,2,4-triazole-5-ketone particle with particle size of 500-5000nm is obtained by spray drying."Shell" is nano zirconium dioxide particle with particle size of 5-300nm.3-nitro-1,2,4-triazole-5-ketone / zirconium dioxide composite nano energetic material is prepared using ultrasonic mixing effect.The composite nano energetic material prepared by the present application has high energy density of 3-nitro-1,2,4-triazole-5-ketone, conductivity of zirconium dioxide, and excellent insensitivity and strong anti-metal corrosion of composite nano material.The preparation process of this method is simple, the cost is low, nano zirconium dioxide can be uniformly coated on the energetic material 3-nitro-1,2,4-triazole-5-ketone particle, and the particle size and thickness of the composite material can be controlled, with good application prospect.

Disclosed is a stabilizer composition for rocket grade hydrogen peroxide (H2O2) which is not detrimental to the combustion performance of RDREs and not detrimental to the decomposition performance of catalyst beds while simultaneously greatly increasing the storability of H2O2 in rocket propellant management systems including but not limited to tankages and regenerative cooling combustion chambers.

Disclosed herein are exothermic reaction mixtures that can be used for copper-based thermite reactions. The disclosed exothermic reaction mixtures can be advantageously formulated with synthetically made copper oxide(s), which can improve consistency and stability of thermite reactions. An example exothermic reaction mixture includes an alloy comprising copper and aluminum and a metal oxide comprising Cu2O and CuO. Also disclosed are methods of preparing the exothermic reaction mixture and methods of welding that include the exothermic reaction mixture.

The application provides a normal-temperature aluminum water metal fuel propellant and a preparation method thereof, and belongs to the technical field of solid propellants. The application uses aluminum powder as fuel, which can save the cost of propellant and improve the energy characteristics of the propellant. The application uses aluminum hydride as a fuel additive, which increases the hydrogen content in the fuel, reduces the flame temperature of the propellant, and improves the specific impulse of the propellant. The application uses perchlorate and sodium sulfate hydrate as an oxidizing agent. The sodium sulfate hydrate stores water in the form of crystal water in the propellant, which overcomes the disadvantage that the aluminum / ice propellant needs to be stored at low temperature. Under normal temperature conditions, the sodium sulfate hydrate has good stability and is not easy to decompose or lose crystal water, thereby prolonging the service life of the propellant. In the combustion process, the sodium sulfate hydrate can be dehydrated to provide an oxidizing agent for the propellant and can be decomposed to generate a working medium, thereby improving the specific impulse of the propellant.