354 results about "Ammonium perchlorate" patented technology

The invention discloses a PVDF nano fiber multifunctional air filtering material which comprises a polypropylene micrometer fiber layer and a PVDF nano fiber layer, wherein the PVDF nano fiber is prepared from a spinning solution; the spinning solution comprises the following components in parts by weight: 1 part of PVDF resin and 9-13 parts of a mixed solvent; the mixed solvent comprises an amide solvent and ketone; the preparation method for the material comprises the following steps: 1) adopting the polypropylene micrometer fiber layer as a substrate; 2) stirring and mixing the PVDF resin, the mixed solvent and tetrabutyl ammonium perchlorate, and adding the obtained spinning solution into an electrostatic spinning device; 3) performing bowl hot-pressing on the substrate through a high-temperature calender, and feeding into the electrostatic spinning device for spraying; 4) obtaining a finished product after the spraying is completed. The PVDF nano fiber multifunctional air filtering material can effectively inhibit growth of bacteria, can greatly reduce the content of oily granules and ionic granules, and is long in service life and high in production efficiency.

The invention relates to a room-temperature curing propellant. The room-temperature curing propellant is prepared from the following components in percentage by mass: 69 to 77% of AP (ammonium perchlorate), 10 to 18% of Al (aluminum) powder, 1 to 5% of plasticizer DOS, 7 to 10% of adhesive HTPB and curing agent, 0.005 to 0.05% of curing catalyst, and 0.2 to 2.0% of network adjusting agent, wherein the network adjusting agent is an alcohol or amine compound with two degrees of functionality, and is one or combination of N-isopropyl alcohol-N-isopropyl ether-aniline, anionic HTPB (hydroxyl-terminated polybutadiene) or N,N'-dihydroxy(diisopropyl)aniline HPA; the curing agent is one or combination of PAPI (polyaryl polymethylene isocyanate), MDI (methylene diphenyl diisocyanate), XDI (xylylene diisocyanate), or TDI (toluene diisocynate). The room-temperature curing propellant has the advantages that the propellant with effective solid content of more than 85% is mixed and cast at the temperature of 20 to 35 DEG C, and can reach a curing point within 7d after curing; the normal-temperature mechanical strength can reach 0.85MPa or above, and the elongation rate is more than 35%.

The invention discloses a bright green cold firework composition and a preparation method thereof. The composition comprises the following ingredients by weight percentage: 25-40% of boron powder, 5-15% of magnalium powder, 6-12% of titanium powder, 8-15% of barium nitrate, 6-10% of 52# chlorinated paraffin, 15-20% of nitrocotton and 15-20% of ammonium perchlorate. The preparation method of the composition comprises the steps of fuel mixing, fuel granulation, fuel grain drying and composition mixing. A cold firework produced by the composition can emit bright green light, the color variety of the cold firework is enriched, and the enjoyment effect of the cold firework is improved.

The invention discloses a method for preparing a porous graphite-phase carbon nitride material. The method includes the following steps that melamine is placed in hot deionized water to be stirred till the melamine is dissolved; after the mixture is cooled to be at the indoor temperature, a HCl aqueous solution is dripped, and white precipitate is formed by stirring; after the product is dried, porous graphite-phase carbon nitride (p-g-C3N4) is obtained through calcination. The graphite-phase carbon nitride material prepared through the method is of a porous structure, and a good catalytic effect is achieved on thermal decomposition of ammonium perchlorate. According to the preparation method, the raw materials can be obtained easily, the process is simple, and product cost is lowered to a great extent; the method is suitable for industrialized mass production, and wide application prospects are achieved in the field of energetic materials.

A non-laminated gas producing agent and its production are disclosed. The non-laminated gas producing agent consists of oxygen-enriched carbamidine nitrate 40-60% with granularity 0.5-6mu, basic copper nitrate 10-28% as oxidant with granularity 0.5-6mu, copperon oxide of catalyst with primary oxidant 15-30% with granularity 0.1-6mu, and clay or paraffin wax 0.1-3% as process assistant with granularity 1-20mu. The production is carried out by: breaking the materials, adding into mixer by proportioning, mixing, sieving by screen, adding water 10-30%, agitating, drying, sieving the dried materials by screen with 20-80 mesh to obtain medicine particles, pressing into tablets, and drying the tablets under 100-120deg.C for 1.5-2.5hrs with water content <0.4%. It achieves wide regulating range, high gas output efficiency, and clean gas composition.

The invention discloses a preparation method of a mesoporous graphite-phase carbon nitride material. The material is prepared by using a monocyanamide water solution as a raw material and nano colloid SiO2 as a template by a hard template process. The preparation method comprises the following steps: adding nano colloid oxidized SiO2 into a monocyanamide water solution, stirring uniformly, drying and calcining to obtain light yellow powder; putting the powder into an NH4HF2 solution, and stirring to remove the SiO2 template; and washing, and drying to obtain the mesoporous graphite-phase carbon nitride (mpg-C3H4) material. Compared with the common blocky graphite-phase carbon nitride (g-C3H4) material, the mesoporous graphite-phase carbon nitride (mpg-C3H4) material has larger specific area, and thus, has better catalytic effect on thermal decomposition of ammonium perchlorate. The preparation method has the advantages of simple technical operation, wide raw material sources and high preparation efficiency.

The invention relates to a preparation method of a self-cleaning coating and a self-cleaning glass. The preparation method includes: firstly preparing a SiO2 sol; then mixing the SiO2 sol with polyethylene glycol, ammonium perchlorate and n-butanol evenly to obtain the self-cleaning coating; and spraying the self-cleaning coating on the surface of a clean glass, then carrying out curing treatment, or performing toughening treatment according to a toughened glass process, thus obtaining the self-cleaning curtain wall glass. The self-cleaning film layer formed in the invention is a porous SiO2 structure, is firmly combined with a glass substrate and has excellent weather resistance. The prepared self-cleaning glass surface has a superhydrophilic effect, so that surface dirt can be effectively removed. With good weather resistance, the self-cleaning glass can be used in the curtain wall glass filed.

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.

The present invention relates to an azide-free gas-generating composition, in particular for use in safety devices for motor vehicles, comprising a fuel in a proportion of 20 to 60% by weight and consisting of one or more components, and an oxidizer mixture in a proportion of 40 to 80% by weight and consisting of at least three components, each in relation to the total composition. In accordance with the invention, the fuel consists of a guanidine compound in a proportion of at least 95% by weight and a further fuel component in a proportion of 0 to less than 5% by weight, each in relation to the fuel, and the oxidizer mixture consists of one or more transition metal oxides in a proportion of 20 to 80% by weight, basic copper nitrate in a proportion of 0 to 50% by weight, metal chlorate, metal perchlorate, ammonium perchlorate or mixtures thereof in a proportion of 1 to 15% by weight and alkali metal nitrate, alkaline earth metal nitrate or mixtures thereof in a proportion of 1 to 15% by weight, each in relation to the oxidizer mixture.

The invention relates to a hollow ultrafine ammonium perchlorate and a preparation method thereof. The ammonium perchlorate is a material with a multilayer cavity structure in the middle part and has the particle size of 1-100mu m. The preparation method adopts a desolvation-recrystallization method, and comprises the following steps of: (1) dissolving the ammonium perchlorate into an N,N-dimethyl formamide/ acetone mixed solvent to prepare a saturated solution; (2) under the conditions of certain stirring speed and solvent-anti solvent volume ratio, adding the ammonium perchlorate saturated solution into anti solvent ethyl acetate, and separating out the ammonium perchlorate by crystallization when supersaturation; and (3) after crystallization, filtering, washing and drying the product, thus obtaining the hollow ultrafine ammonium perchlorate. The ammonium perchlorate is an ultrafine powder material and has hollow morphology, thus being good in dispersity and ordered in structure and effectively improving the performance of a solid propellant. The desolvation-recrystallization method is simple, safe and convenient in operation.

The invention provides a preparation method of a prussian blue type energy storage material, and specifically relates to a preparation method of a prussian blue type sodium-ion battery electrode material with high yield. The preparation method comprises the following steps: S1, dissolving divalent transition metal perchlorate and sodium ferrocyanide into water respectively to obtain a divalent transition metal perchlorate solution and a sodium ferrocyanide solution; S2, dissolving sodium perchlorate into water to obtain a sodium perchlorate solution; and S3, mixing the divalent transition metal perchlorate solution and the sodium ferrocyanide solution with the sodium perchlorate solution to obtain a mixed solution, and stirring and standing the mixed solution to obtain a sediment product;and separating and drying the sediment product to obtain the prussian blue type energy storage material. According to the preparation method, a great deal of loss of the prussian blue type material inthe cleaning process is avoided, and high-yield production can be realized. The preparation method is simple and high in yield, and is easy for industrial large-scale production.

The invention discloses a colorful trace fume star used in fireworks. The star consists of an effect agent core, an intermediate agent isolation layer and an ignition agent layer. A layer of intermediate agent is stuck on the effect agent core granules as the intermediate agent isolation layer; and a layer of black powder is stuck on the intermediate agent isolation layer as the ignition agent layer. The effect agent core comprises the following ingredients by weight: 15-30 parts of ammonium perchlorate, 5-15 parts of a colorant, 50-75 parts of single-base and double-base agent and 0-5 parts of magnalium. The intermediate agent comprises the following ingredients by weight: 20-35 parts of potassium perchlorate, 5-15 parts of the colorant, 50-75 parts of the single-base and double-base agent and 0-5 parts of the magnalium. The colorful trace fume star used in fireworks generates fume which is less than 30% of that of the existing agent after burning, and has good moisture resistant performance and long shelf life; and visual observation at the burning field proves that burning rate, lightness and color saturation of the star achieve or exceed the effects of the existing products.

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.

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.

The invention provides a MOFs (Metal-Organic Frameworks)-based carbon-cladded ZnO core-shell structure nano-material and a preparation method thereof and relates to a ZnO composite nano-material and apreparation method thereof, aiming at solving the technical problem that the decomposition speed is slow when an existing single ZnO catalyst is used for catalyzing thermal decomposition reaction ammonium perchlorate. The nano-material provided by the invention is a nano-sphere which takes a ZnO spherical nanoparticle as a core and carbon as a shell. The preparation method comprises the followingsteps: 1, dissolving zinc acetate in diethylene glycol and reacting, and taking supernatant; 2, then dissolving the zinc acetate in the diethylene glycol; adding the supernatant and reacting to obtain ZnO nanoparticles; 3, enabling 2-methylimidazole and the ZnO nanoparticles to react to prepare 2-methylimidazole zinc salt cladded ZnO core-shell structure spherical particles; 4, calcining to obtain the carbon-cladded ZnO core-shell structure nano-material. When the material is used for catalyzing thermal decomposition of AP, a decomposition peak is advanced to 293 to 295 DEG C and the apparentdecomposition heat reaches 1,420 to 1,435J/g, so that the material can be applied to the field of catalysis.

The invention discloses a micro smoke gun propellant for fireworks, which comprises the following components in part by weight: 30-70 parts of nitrocotton, 5-30 parts of moistureproof ammonium perchlorate, 2-10 parts of reducing agent and 5-20 parts of high-nitrogen substance. The safety performance indexes of the micro smoke gun propellant for fireworks completely meet the requirements of the national standard. The micro smoke gun propellant for fireworks not only can meet the propelling requirement of the product, but also produces micro smoke when the gun propellant is combusted. According to the light transmittance detection result, the smoke quantity produced by the gun propellant is only about 30% of that of the traditional equivalent corresponding products.

The invention discloses an environment-friendly minimum smoke firecracker, composed of a high sounder, an igniting wrapped powder on the surface of the high sounder, a lead wire and a casing layer. The high sounder has a lead-free high sounder as a sounder of the firecracker; the igniting wrapped powder has smokeless igniting powder, ingredient and weight proposition of which is as follows: nitrated cellulose 60 to 90 parts; ammonium perchlorate 10 to 40 parts; antiodorant 5 parts; and strong rubber powder 2 parts; the finished product of firecracker is produced by wrapping the lead-free smokeless sounder with smokeless paper and the smokeless lead wire, so as to ensure each step of setting off firecracker is contamination free such as smoke, pungent smell, residue, etc., and implement minimum smoke and even smokeless effect.