127results about How to "Explosive" patented technology

The invention relates to the field of textile, in particular to a medical and sport bandage. The bandage is technical characterized by fabrics and a processing method of the fabrics; the selected materials break through materials on the prior market, weft yarn which is 100 percent of all-cotton yarn is selected, and warp yarn adopts fabric of all-cotton yarn packed spandex yarn as base cloth; 55 percent of ultrahigh elasticity and long retention time which do not exist in the bandage fabric on the prior market are obtained by a special processing method, and a bandage finished product can be directly stuck to the skin part needing protection in a disposable way, has favorable lightness, ventilation and comfortable feeling and novelty.

The invention relates to a purification method of ultra-pure aluminum, comprising the following steps: cleaning and drying raw refined aluminum, wherein the purity of the selected refined aluminum is at least 4N6, Mg is less than 6ppm, Ti is less than 0.2ppm and Zr is less than 0.2ppm; loading the selected raw refined aluminum into a purification furnace, sealing and vacuumizing the furnace, and heating to 680-750 DEG C by using a gas furnace to melt the solid raw refined aluminum to form liquid; moving the purification furnace heated to 680-750 DEG C to a crystal growing furnace which is kept at 660 DEG C inside by a crystal growing furnace heater, rotating the aluminum liquid of the purification furnace in the crystal growing furnace heater, and enabling the aluminum liquid inside the purification furnace to self-keep the crystallization speed at 5-10 cm/h by controlling the heat dissipating capacity of the crystal growing furnace and finishing the crystallization after 4-6 hours; cooling the crystallized purification furnace, taking out a crystallization ingot, removing 25-35 percent relative to the mass of the crystallization from the tail part of the crystallization ingot and obtaining a first purified aluminum ingot; placing the first purified aluminum ingot into the purification furnace again, and repeating purification until the aluminum ingot reaching the required precision is obtained.

The invention discloses a pretreatment method for determining multiple heavy metal elements in soil simultaneously. The pretreatment method comprises steps as follows: step (1): sample weighing: the soil is air-dried, ground and screened with a nylon sieve, a soil sample is weighed and put into a microwave digestion tube through a polytetrafluoroethylene long-neck funnel, and the funnel is slightly flapped before the funnel is removed so that all the soil sample attached to the wall of the funnel enter the digestion tube; step (2): digestion: nitric acid, hydrochloric acid and hydrofluoric acid are added to the digestion tube, a cover is screwed down, and the digestion tube is put into a microwave digestion instrument for digestion; step (3): acid driving: after microwave digestion is finished, hydrogen peroxide is added to the digestion tube; then the microwave digestion tube is put into a temperature-controlling acid driver in a fume cupboard for direct acid driving until the volume is smaller than 1 mL, then a solution is directly transferred to a volumetric flask, the volume is constant, and a to-be-tested solution is obtained. With the adoption of the pretreatment method, the digestion speed of the sample can be increased, the pre-treatment step of the sample is simplified, and the accuracy of the detection analysis result is guaranteed.

The invention discloses a high-speed and high-efficiency diamond grinding wheel as well as a preparation method and a usage method thereof. The diamond grinding wheel comprises a base body and a working layer, wherein the working layer comprises raw materials in percentage by mass as follows: 75%-93% of metal and ceramic composite binding agent powder and 7%-25% of diamond. The metal and ceramic composite binding agent powder is prepared from 65%-80% of pre-alloy powder and 20%-35% of glass-ceramic binding agent powder. When the grinding wheel is applied to a glass edge grinding machine, a combined grinding wheel comprising a fine grinding wheel and a rough grinding wheel is mounted on each of two electrode spindles, two combined grinding wheels are mounted in a cross manner, and rough grinding and fine grinding are performed simultaneously. The diamond grinding wheel prepared with the method has the characteristics of stable performance, sharp grinding, low cost and the like; the traditional glass edge grinding and chamfering machining manner is changed, glass machining procedures are greatly simplified, and the glass machining efficiency and quality are improved.

The invention relates to an emulsifying-type linear cutting operating fluid and uses thereof, and mainly solves the problem of short service life of the emulsifying-type electric-spark linear cutting operating fluid in the prior art. The emulsifying-type linear cutting operating fluid comprises the following components: by weight, a) 1-20 parts of a modified rosin blasting agent; b) 2-40 parts of a vegetable oilness agent; c) 0.2-5 parts of a pH adjustment agent; d) 0.1-10 parts of a coupling agent; e) 0.1-8 parts of an emulsifier; and f) 25-80 parts of base oil; the modified rosin blasting agent is selected from at least one from modified rosin prepared by esterification reaction or neutralization reaction of carboxyl in a molecular structure of rosin, or by addition reaction, hydrogenation reaction, disproportionation reaction or polymerization of double bonds of the molecular structure of the rosin, and the technical scheme solves the problem well, and can be used in the industrial production of the emulsifying-type electric-spark linear cutting operating fluid.

The invention relates to a calcium sulfate composite oxidant for fireworks and crackers and a preparation method thereof, belonging to the technical field of chemical raw materials of the industry of the fireworks and crackers. The oxidant takes calcium sulfate and iron oxide as a main body assisted by barium nitrate, takes potassium permanganate and potassium perchlorate as initiators, and is added a small amount of an active agent. The preparation method comprises the following steps: roasting gypsum (calcium sulfate dihydrate), smashing, adding a mixed powder body of potassium permanganate and potassium perchlorate, grinding, smashing iron oxide, adding the active agent into the iron oxide powder, and then adding barium nitrate and grinding; and uniformly mixing the two types of ground powder. One of main raw materials of the invention is calcium sulfate which is non-toxic and has low price, and after being roasted the calcium sulfate, the calcium sulfate is not only an oxidant but also a moisture-proof agent and a leavening agent and also is a mechanical sensitivity buffer which is fine and smooth and slippery. Since the composite oxidant of the invention is prepared into the fireworks and crackers according to the traditional method, the fireworks and crackers has the advantages that the burning property is good, the safety is strong, the friction sensitivity and impact sensitivity are zero, and the production cost is greatly reduced.

A device for producing electrical discharges in an aqueous medium, the device has a first electrode 3 and a second electrode 4, where each electrode 3, 4 is made of a metal alloy 5 and each has an electrode tip 3C, 4C integral or otherwise affixed to said electrode 3, 4. Each tip 3C, 4C is made of a metal alloy and at least the outer surface of such tips includes a percentage of gold or platinum. Preferably the entire tip 3C, 4C portion is made of an alloy 5 having between 0.02 to 20 percent weight percent gold or platinum. The tip metal alloy 5 preferably has a base composition of steel, more preferably a base composition having either at least 4 percent cobalt or at least 4 percent nickel in combination with the small amount of gold or platinum. The use of gold or platinum provides exceptional electrical conductivity, but improves the ductility of the tip material such that the explosive and corrosive effects of the high voltage plasma discharges in the acoustic shock waves are greatly diminished.

The invention discloses a method for extracting theophylline sodium salt or theophylline from a theophylline sodium salt or theophylline mother solution by a styrene type macroporous resin adsorption method, which comprises the following steps: (1) regulating the pH value of the theophylline sodium salt or theophylline mother solution; (2) filtering the mother solution and removing suspended impurities in the mother solution; (3) adsorbing the mother solution by adsorption resin; (4) desorbing the adsorption resin after adsorption saturation by a desorbing agent to obtain a desorption solution; (5) regulating the pH value of the desorption solution, standing and crystallizing theophylline sodium salt or theophylline; (6) centrifugally filtering; and (7) drying to obtain solid theophylline sodium salt. The method provided by the invention has the advantages that the theophylline sodium salt or theophylline crude product has better quality, the operation safety is better, the extraction efficiency is higher, the extraction cost is low, and the method is more suitable for mass production and facilitates realizing automatic operation. With the method disclosed by the invention, the extraction cost of the theophylline sodium salt and theophylline can be reduced, the extraction yield of the theophylline sodium salt and theophylline is increased, and the competitiveness of enterprises is enhanced.

The invention relates to an impulse self-cleaning air filter, which comprises four parts as filter, self-cleaning, control and pressure protection. Wherein, the filter part utilizes three-stage filtration; the Venturi tube of self-cleaning part is relatively arranged above the filter cylinder of filter part; the passive pressure collecting point of sealing box is connected into the power control box of said control part; the signal terminal of PLC micro computer inside the power control box is connected to the electromagnetic impulse valve which is connected to the compressed air source and the injector of self-cleaning gas source; the pressure differential alarm inside the sealing box is serially connected between the PLC micro computer and the pressure differential controller; the pressure collecting point of passive pressure protective gate is connected between the PLC micro computer and the passive pressure protective gate. The invention has the advantages that: it has lower gas consumption, better washing effect, better sealing ability, long service life, while the gas leakage is zero, the filter accuracy is 0.3 mum, and it uses passive pressure protection.

The invention provides a filter element component. The component comprises a bracket cabin, wherein the bracket cabin is provided with a gas transmission shaft, and is connected with a filter element through a seal connection device; an enclosed cavity is formed in the bracket cabin; the lower end part of the gas transmission shaft is provided with a pulse head positioned in the enclosed cavity; and an air cylinder is arranged in the bracket cabin, and a piston end of the air cylinder is provided with a lift disk. A dust removal device comprises a draught fan chamber, a filter element chamber, a dust collection chamber and a gas storage tank which is connected to the filter element chamber through a gas transmission pipe, wherein a draught fan is arranged in the draught fan chamber; the draught fan chamber and the dust collection chamber are connected with the filter element chamber respectively; the input end of the gas transmission pipe is provided with a pulse valve; and at least one filter element component is arranged in the dust collection chamber. The filter element component combines pulse type gas transmission with the filter element and has the advantages of reasonable structure, strong explosive force of pulse gas and good dust removal effect; and each group of the filter element components can be cleaned independently, so that excellent cleaning effect can be ensured.

The invention discloses a catapult used on an aircraft carrier, comprising a power system and a seat frame, wherein, a rotating shaft is arranged on the upper frame of the seat frame; a cylinder is arranged outside the rotating shaft; at least one curly hair strip-shaped steel plate is arranged between the rotating shaft and the inner wall of the cylinder; a traction steel cable is wound outside the cylinder; a tractor is connected on the traction steel cable; and the power system is connected with the rotating shaft. The catapult has the characteristic of strong moment explosive force, leadsthe launching distance of an object to be far, can be rapidly reused; in each launching, the common electric power is only needed to lead the power system to tightly twist the spring-type steel plate, and the launching cost is low.

A synthetic diesel oil is prepared from the desulfurized heavy benzol as main raw material, adding proper quantity of kerosene and light diesel oil, further adding small amounts of cetane, number improver, viscosity index improver and flowability improver through mixing. Its advantages are high cetane number, heat value and power, low oil consumption, and high start-up performance.

The invention provides a battery box system with the temperature automatically adjusted. The system comprises a cooling loop and a heating loop; a vehicle controller adjusts the temperature of a battery box through a low temperature controller and a high temperature controller according to the actual temperature of the battery box so that the temperature of the battery box can be kept within a settemperature range; meanwhile, the system monitors the working state of each component and reminds related personnel in time when an abnormality or fault occurs, so that it is guranateed that a battery pack, especially an electric vehicle lithium power battery pack, can work safely and reliably, and the service life of the battery pack can be prolonged.

An underground coal mine deep-hole directional blasting cartridge comprises a cartridge body (1), an upper connector (2) and a lower connector (3). One side or opposing sides of the cartridge body (1) are provided with cuts (4), and each cut is covered with a layer of metal sheet (5) which is provided with a V-groove by concaving; the bottom of every V-groove points to the center of circle along the peripheral radial direction of the cartridge body and is arranged at a 1/2 radius part. The underground coal mine deep-hole directional blasting cartridge allows for more ideal directional blasting.

The invention belongs to the field of self-assembly high molecular materials, and discloses a ternary brush polymer with amphipathy, and a nanoporous capsule constructed by the ternary brush polymer. The polymer is prepared through the following steps: (1) synthesizing a main chain so as to obtain a main-chain polymer; (2) synthesizing a side chain, and in the synthesizing process, introducing a functional group or performing functionalization on the synthesized side chain, so as to obtain a hydrophilic side-chain polymer with pH value responsiveness and adopting a photo-crosslinking structure; (3) mixing the main chain with the corresponding hydrophilic oleophylic side chain adopting the photo-crosslinking structure, wherein each unit functional group of the main chain and the corresponding hydrophilic oleophylic side chain adopting the photo-crosslinking structure can be subjected to a chemical reaction, and performing a one-step reaction in the presence of a catalyst so as to obtain the ternary molecule brush polymer with the amphipathy and the pH value responsiveness. According to the ternary brush polymer disclosed by the invention, sulfydryl-epoxy click chemistry is adopted, and Cu ionic catalysts are avoided, so that great convenience is brought for post-treatment of the reaction, the reaction rate and the reaction efficiency are both improved, and besides, the safety of the process for preparing nanovesicles is improved.

The invention discloses a ginger-red jujube-scallion beverage which mainly contains ginger juice, red jujube juice, scallion juice, white granulated sugar, water, conventional amount of food additive and the like. The preparation method of the ginger-red jujube-scallion beverage comprises the following steps: peeling and cleaning fresh ginger, cutting the fresh ginger into small slices which are 4-5cm long, cleaning fresh red jujube, peeling and cleaning fresh scallion, cutting the fresh scallion into the small slices which are 4-5cm long, placing the ginger slices, the red jujube and the scallion slices into a pot to be mixed together, heating to be boiling after adding water with mass fire firstly and then soft fire, boiling for 50-70 minutes, adding the white granulated sugar, continuously heating for 20-30 minutes, then fishing for the ginger slices, the red jujube and the scallion slices, cooling, filtering, adding the conventional amount of food additive, and evenly mixing, thus obtaining the ginger-red jujube-scallion beverage. The prepared ginger juice -red jujube juice -scallion juice beverage with a health care function not only has the efficacies of relieving exterior syndrome by diaphoresis, warming middle energizer and arresting vomiting, warming lung to stop cough, and detoxifying, but also has the efficacies of reinforcing the spleen to replenish qi, clearing heat and detoxicating, eliminating phlegm and stopping cough, relaxing spasm and relieving pain, and is sour and sweet in taste, faint in ginger fragrance and better in mouthfeel.

The present invention relates to an engine oxygen-rich fuel, which is formed by mixing an active hydrogen-free and oxygen-containing organic matter and an additive, wherein the active hydrogen-free and oxygen-containing organic matter comprises but is not limited to a ketone substance, an ether substance, an ester substance and an acetal substance, the ester substance content is 0-99.99%, the content of other substances is 0-100%, and the additive content is 0-10%. According to the present invention, the product can be separately used, and can further be used by mixing with a fossil fuel and an alcohol based fuel according to an arbitrary ratio so as to improve combustion quality; and the oxygen-rich fuel has characteristics of complete combustion, environmental-friendliness on environment, human body and engines, and low cost, and is the ideal fuel for replacing the existing fossil energy source.

The invention relates to an improved structure of a rotary engine. According to the invention, a temperature sensor, a temperature controller and a fuel injector are arranged in an explosion chamber. During operation, the engine is started by using low-ignition-point fuel; when a working temperature is reached, the temperature controller drives the fuel injector to supply high-ignition-point fuel for the explosion chamber for combustion, and the supplying of the low-ignition-point fuel is stopped. During an operation process, because a movable plate of the rotary engine is movably arranged, a communication channel is formed between the combustion chamber and the explosion chamber; high-temperature and high-pressure airflow and oil fires in the explosion chamber are filled into the combustion chamber through a gas inlet; and air newly filled in the combustion chamber can be compressed, such that an autogenous compression phenomenon occurs. After mixed combustion, higher explosive power can be obtained, and better mechanical rotation benefits can be provided.