150results about "Nitrated aromatic explosive compositions" patented technology

A secure authorization server computer system for verifying an identity of an end-user is provided. The computer system is programmed to receive, from a computing client, an authentication request at an authorization component. The authentication request includes a secure authentication request identifier. The computer system is also programmed to validate the authentication request at the authorization component by validating the secure authentication request identifier. The computer system is further programmed to transmit an authentication response from the authorization component to the computing client. The authentication response includes an authorization code. The authorization code represents a validation of the authentication request.

The present invention provides methods, enzymes, and cells for the biosynthetic production of phloroglucinol from malonyl-CoA, which is ultimately obtained from simple starting materials such as glucose; also provided are methods for preparing derivatives of biosynthetic phloroglucinol, including, e.g., resorcinol.

The present invention relates to energetic cocrystals, and to methods for using the same for treatment of a subterranean formation. In various embodiments, the present invention provides a method of treating a subterranean formation, the method including obtaining or providing a composition including energetic cocrystals. Each energetic cocrystal independently includes an energetic compound and a secondary material. The method also includes placing the composition in a subterranean formation.

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.

A non-toxic, non-hydroscopic percussion primer composition and methods of preparing the same, including at least one explosive component that has been traditionally considered a moderately insensitive explosive or secondary explosive, and at least fuel particle component having a particle size of about 1.5 microns to about 12 microns, which allows the use of moderately active metal oxidizers. The sensitivity of the primer composition is created by the interaction between the moderately insensitive explosive and the fuel agent such that traditional primary explosives such as lead styphnate or DDNP are not needed. The primer composition also eliminates the risks and dangers associated with traditional nano-sized fuel particles.

An ionic liquid is disclosed. A precursor composition that comprises at least one ionic liquid and at least one energetic material is also disclosed, as is a method of synthesizing an ionic liquid and a method of desensitizing an explosive composition.

The invention relates to the field of initiating explosive devices, in particular to a nano-explosive preparation system and a nano-explosive preparation method based on the microfluidic technology. The system comprises a fluid driving unit, a recrystallization unit, a sample collection unit and a connection component; the fluid driving unit is used for driving solvents and non-solvent solutions;the recrystallization unit comprises a temperature control device and a microchip; the microchip comprises a micro-mixing structure; after the fluid driving unit drives the solvents and the non-solvent solutions to contact with the microchip, rapid mixing can be realized at a recrystallization temperature under the action of the micro-mixing structure to form suspensions; the sample collection unit is used for collecting the suspensions flowing out from the microchip; the connection component is sequentially connected with the fluid driving unit, the recrystallization unit and the sample collection unit. The nano-explosive preparation system and the nano-explosive preparation method have the advantages that the solvents and the non-solvent solutions are rapidly mixed to react to generate the suspensions through the temperature control device and the micro-mixing structure of the recrystallization unit, and the suspensions are washed, filtered and dried to obtain nano-explosives with uniform crystal forms, good crystal appearance and concentrated particle size distribution.

The invention discloses a preparation method of a benzotrifuroxan (BTF) and trinitrotoluene (TNT) cocrystallized explosive. The preparation method comprises the following steps of: (1) preparation of BTF-TNT saturated solution, namely, adding sufficient quantity of BTF to a crystallization solvent, raising the temperature to 20-50 DEG C, dissolving BTF and filtering the solution to obtain the BTF saturated solution; and adding sufficient quantity of TNT to the BTF saturated solution to be dissolved and filtering the solution to obtain the BTF-TNT mixed saturated solution; and (2) preparation of the BTF-TNT cocrystallized explosive: putting the BTF-TNT mixed saturated solution into a beaker, then standing in a constant temperature incubator, evaporating the solvent and drying the product, thus obtaining the BTF-TNT cocrystallized explosive. The preparation method has the beneficial effects that the prepared BTF-TNT cocrystallized explosive has good safety and detonation property and excellent free-flowing property, can serve as the component of explosives, gunpowder and propellants and has better application prospect in high-energy insensitive ammunitions; and the preparation method has the advantages of simple process flow, convenience in operation, mild reaction conditions, good safety and high product quality.

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.

A method and system for downhole operations that includes an energetic material with a reduced sensitivity to temperature, and a temperature rating that is higher than other energetic materials. Downhole tools that use energetic material thus can have a higher temperature rating with the reduced sensitivity energetic material. One embodiment of the energetic material includes an energetic heterocycle compound, such as 2,6-diamino-3,5-dinitropyrazine-1-oxide.

The invention discloses an alternating micro-layered heat conduction PBX mixed explosive. The mixed explosive comprises, by weight, 90%-95% of an explosive, 4%-9.8% of a polymer binder and 0.2%-1% ofa heat conduction filler. The heat conduction filler comprises a flake-like heat conduction filler and a linear heat conduction filler. The flake-like heat conduction filler comprises any one of graphene, graphene nanosheets and boron nitride nanosheets. The linear heat conduction filler comprises any one of single-walled carbon nanotubes, multi-walled carbon nanotubes, boron nitride nanotubes andnano-carbon fibers. The invention also provides a preparation method of the alternating micro-layered heat conduction PBX mixed explosive. The preparation method fully utilizes the thermal conductivity characteristics and advantages of the two-dimensional flake-like and one-dimensional linear high thermal conductivity fillers and adopts an ingenious structure control strategy so that the fillersare respectively enriched in the partial layer space to form flake-like and linear thermal conduction layer passages and thus parallel transmission in layers is realized and heat transfer is maximized.

The invention discloses a method for preparing micro-nano TATB (triamino trinitrobenzene) explosive granules. The method comprises the following steps of: (1) preparation of explosive solution, wherein the TATB explosive is dissolved to prepare the explosive solution without impurities; (2) preparation of non-solvent medium, wherein water and dispersant are uniformly mixed to prepare the non-solvent medium, and the non-solvent medium is cooled by putting in a refrigerator or adding ice cakes and other mode; (3) mixed crystallization, wherein the TATB explosive solution prepared in the step (1) and the non-solvent medium prepared in the step are mixed to crystallize to form micro-nano explosive granules, and the non-solvent medium in the mixing process is kept at a temperature of lower than 10 DEG C; and (4) post-treatment, wherein the micro-nano explosive granule liquid prepared in the step (3) are subjected to solid-liquid separation, washing purification and drying to obtain the micro-nano TATB explosive product. The method has the characteristics of simple process flow and convenience in operation, and is applicable to industrial large-scale production. By adopting the method, micro-nano TATB powder with average granular diameter of 170nm and d50 of 100nm can be obtained by controlling process parameters.

A priming mixture comprises aluminium silicate as the sensitizer, advantageously in a percentage higher than 10%, not exceeding 30% and preferably included between 15% and 25%. Combined with said sensitizer, the-mixture may further comprises a potassium compound, preferably potassium nitrate.

The present invention provides a photoresponsive gas-generating material that is to be used in a micropump of a microfluid device having fine channels formed therein, and is capable of effectively generating gases for transporting a microfluid in response to light irradiation and transporting the microfluid at an improved transport efficiency. The present invention also provides a micropump incorporating the photoresponsive gas-generating material.A photoresponsive gas-generating material 13 is to be used in a micropump having fine channels formed in a substrate, and comprises a photo-sensitive acid-generating agent and an acid-sensitive gas-generating agent, and a micropump 10 has the photoresponsive gas-generating material 13 housed therein.

The invention discloses a high polymer bonded explosive enhancing mechanical properties with nanoparticle and a preparation method of the high polymer bonded explosive. The high polymer bonded explosive contains 2-75% by mass of nano explosive particles with the particle size of 50-600nm. The preparation method comprises the following steps: mixing an explosive with an average particle size with the nano explosive particles in water in a proportion; then slowly adding a bonding agent solution to ensure that the explosive particles are gradually compounded into microparticles along with the volatilization of a solvent under the action of the bonding agent; and pressing an explosive product after washing and drying. According to the preparation method disclosed by the invention, the nano explosive particles are adopted to replace average granular explosive in the high polymer bonded explosive, and the PBX formula components and contents thereof are not needed to be changed, so that the mechanical properties of the high polymer bonded explosive can be significantly improved, a large amount of multi-component bonding agent systems which are used for improving the mechanical properties can be effectively avoided, the high-energy density of the high polymer bonded explosive is ensured, and meanwhile, the high polymer bonded explosive is relatively single in component, simple in preparation method and low in cost.

The invention discloses a 3,4-di(3',5'-dinitryl-4'-methyl phenyl) furoxan compound, the structural formula of which is shown in the specification. The compound is mainly applied to energetic materials.

The invention discloses a heatproof mixing explosive which comprises the following raw materials: by mass, 93.0%-95.0% of a single-compound explosive; 2.0%-3.0% of fluorine rubber; 0.5%-1.0% of stearic acid; 1.0%-2.0% of rubber slurry; and 0.3%-0.5% of graphite. The single-compound explosive is a mixture of LLM-105 and ATB; the fluorine rubber is FPM2311, FPM2603 or FPM246G; and the rubber slurry is polytetrafluoroethylene emulsion, polyacrylate emulsion or styrene-acrylonitrile copolymer emulsion. In the heatproof mixing explosive, the density and energy of the component LLM-105 are much higher than those of HNS, and the LLM-105 can provide sensitivity required for the explosive and provide rapid output of complete detonation waves. The component TATB can provide the explosive higher relative density and explosion output because of good loading and explosive pressing characteristics, so that the explosive has higher pressed density and armour penetrating power.

The invention relates to the field of explosives, and particularly discloses a polymer bonded explosive for an ultra-high-temperature petroleum perforation bullet and a preparation method for the polymer bonded explosive. The explosive consists of hexanitrostilbene, a vinyl acetate-methyl acrylate-butyl acrylate terpolymer and graphite. The explosive has the characteristics of high heat-resistant elemental hexanitrostilbene content, easiness in detonation, high explosive pressing performance, higher pressing density and energy and high inter-component compatibility. The explosive consists of 96.8 to 98.2 mass percent of hexanitrostilbene, 1.5 to 2.5 mass percent of the vinyl acetate-methyl acrylate-butyl acrylate terpolymer and 0.3 to 0.7 mass percent of graphite. According to the explosive and the preparation method, combustion and explosion of the ultra-high-temperature petroleum perforation bullet under the conditions of 220 DEG C and 100 h or 250 DEG C and 4 h are avoided, and the explosive and the preparation method can be used for the exploitation of a deep well oilfield and an offshore oil-gas field.

The invention discloses a preparation method of a benzotrifuroxan (BTF) and 2,4-dinitroanisole (DNAN) cocrystallized explosive. The preparation method comprises the following steps of: (1) preparation of BTF-DNAN saturated solution, namely, adding sufficient quantity of BTF to a crystallization solvent at 20-50 DEG C, dissolving BTF and filtering the solution to obtain the BTF saturated solution; and adding DNAN to the BTF saturated solution to be dissolved and filtering the solution to obtain the BTF-DNAN mixed saturated solution; and (2) preparation of the BTF-DNAN cocrystallized explosive: putting the BTF-DNAN mixed saturated solution into a beaker, then standing in a constant temperature incubator, evaporating the solvent and drying the product, thus obtaining the BTF-DNAN cocrystallized explosive. The preparation method has the beneficial effects that the prepared BTF-DNAN cocrystallized explosive obviously reduces the sensitivity of BTF, obviously improves the energy of DNAN, has excellent detonation property, can serve as a novel insensitive detonating agent and has better application prospect in the insensitive ammunitions resistant to high overload and the like; and the preparation method has the advantages of simple process flow, convenience in operation, mild reaction conditions, good safety and high product quality.

The invention relates to a thermotolerant mixed explosive for oil field, which comprises (by mass ratio) hexanitrodiphenylsulfone 95-98, fluoroelastomer and fluoro-resin 1.5-3.5, mineral wax and mineral wax 0.5-1.5. The invention can be applied to the field of heatproof high explosive such as oil gas deep-well heat-proof gun perforation cartridge charging.

The invention belongs to the technical field of energetic materials and relates to an ETN-DNT eutecticevaporate energetic material and a preparation method thereof. The ETN-DNT eutecticevaporate energetic material and the preparation method thereof aim at achieving the effects that the composite energetic material is low in sensitivity, high in energy, low in melting point and great in NC dissolving capacity. The ETN-DNT eutecticevaporate energetic material is prepared from, by mass, 20-70% of 1, 2, 3, 4-erythritol tetranitrate, 20-70% of 2, 4-dinitrotoluene, 1-5% of a stabilizing agent and 1-10% of a desensitization agent, wherein the stabilizing agent is a mixture of 2-nitrodiphenylamine and diethyl diphenyl urea, the 2-nitrodiphenylamine accounts for 20-80% the total mass of the stabilizing agent, and the diethyl diphenyl urea accounts for 20-80% the total mass of the stabilizing agent; the desensitization agent is one of or a mixture of dioctyl sebacate, glycerol triacetate or dimethyl phthalate. The energetic material has the advantages that detonation heat energy is maintained to be 5139 kJ / kg and above, detonation velocity energy is maintained to be 7008 m / s and above, and energy performance is high.

A method to convert surplus nitroarene explosives (picric acid, ammonium picrate,) into TATB is described. The process comprises three major steps: conversion of picric acid / ammonium picrate into picramide; conversion of picramide to TATB through vicarious nucleophilic substitution (VNS) of hydrogen chemistry; and purification of TATB.

The invention discloses a preparation method of an energetic material with controllable interface infiltration performance. The preparation method includes the steps that firstly, an energetic material with hydrophilicity is prepared; secondly, an energetic material wrapping specific nanometer particles is prepared; thirdly, washing and drying are conducted; fourthly, soaking with an alkyl siloxane solution is conducted; and fifthly, washing and drying are conducted, so that the energetic material with the controllable interface infiltration performance is obtained. The preparation method has the beneficial effects that expensive equipment and severe experiment conditions do not need to be used, and the production cost is reduced; the characteristics of convenience and rapidness are achieved, and good infiltration performance controllability is achieved; the energetic material which is prepared through the preparation method and has the controllable surface and interface infiltration performance is used for the field of PBX, the infiltration performance can be changed at any time according to changes of a bonding system, and a good solid-liquid complete infiltrating and wrapping effect is achieved; and water-insoluble energetic materials such as HMX, RDX and TATB can be used as modification matrixes, and the wide application range is achieved.

The invention discloses 2, 4, 6-trinitro-1, 3-distyryl benzene derivatives containing chlorine substituent as well as a preparation method and an application thereof. The chemical structure of the compounds is characterized in that three nitryls exist at positions 2, 4, 6 of a middle benzene ring of 1, 3-distyryl benzene, and ortho-positions, meta-positions and para-positions of benzene rings at the two sides are connected to chlorine atoms, or the ortho-positions and the para-positions are simultaneously connected to the chlorine atoms. The chemical structure of the compounds is confirmed to be the trans-structure when the coupling constant of diphenylethene double bonds in a nuclear magnetic resonance spectrum is about 16.0Hz. The 2, 4, 6-trinitro-1, 3-distyryl benzene derivatives containing chlorine substituent are synthesized through microwave assistance under a catalysis condition, are simple in a preparation technology, solvent-free, fast, green and safe and can be potentially applied to the field of luminescent devices and energetic materials.

As has been established, the use of energetic materials, generated by manufacturer's excess and / or demilitarization projects, as ingredients in commercial blasting explosives is a feasible and environmentally acceptable method of handling them. Ammonium picrate is used as an explosive charge in the manufacturing of conventional ammunition rounds, such as large caliber navy guns. The present invention is directed to the use of recovered ammonium picrate in commercial blasting agent compositions, that include watergel slurries, ANFO, HANFO-blends and emulsion based blasting agents. These new blasting agents exhibit favorable cost for performance characteristics and have found a use for recovered ammonium picrate, which would heretofore have been incinerated or otherwise disposed of at significant cost.

An initiator explosive for detonating a second explosive that includes nanocrystalline silicon containing a plurality of pores and a solid state oxidant disposed within said pores.

The invention discloses a preparation method for a benzotrifuroxan and m-dinitrobenzene eutectic explosive. The preparation method comprises the following steps: firstly, preparing a benzotrifuroxan and m-dinitrobenzene saturated solution through a crystallization solvent; secondly, evaporating the solvent of the saturated solution by a constant temperature incubator and crystallizing to form the benzotrifuroxan and m-dinitrobenzene eutectic explosive. The benzotrifuroxan and m-dinitrobenzene eutectic explosive has the benefits of excellent safety, good detonation performance and good free-running property, can serve as a component of a novel booster explosive, has a good application prospect in high-energy low-sensitive ammunitions, and is simple and stable in preparation method and process flow, convenient to operate, moderate in reaction conditions, good in safety and high in quality.