123results about How to "Improve quality ratio" patented technology

The invention provides a composite diaphragm as well as a preparation method and application thereof, and relates to a lithium ion battery. The composite diaphragm comprises a base diaphragm material; a protective layer coats the surface of the base diaphragm material and adopts a water-soluble bonding agent; a solvent used by slurry of the protective layer is water. The preparation method of the composite diaphragm comprises the steps of (1) evenly mixing inorganic particle powder, the water-soluble bonding agent and the solvent to obtain mixed powder; and (2) coating the single or double surfaces of a common commercially available diaphragm with the mixed powder obtained in the step (1) by a film applicator, carrying out vacuum drying, and removing the solvent to obtain the composite diaphragm, wherein the thickness of the composite diaphragm can be adjusted by controlling the concentration of the slurry and the parameters of the film applicator. The composite diaphragm can be applied to the preparation of a secondary battery and can be used for replacing an existing ceramic diaphragm, wherein the secondary battery comprises but not limited to a lithium ion battery.

The invention discloses a spherical robot with binocular stereoscopic vision. The spherical robot with the binocular stereoscopic vision comprises a visual camera support structure, a straight line and turning driving mechanism, a novel spherical shell and balance weights. The spherical shell is a whole formed by three portions, the spherical crowns of a left spherical shell and a right spherical shell are cut to form a through hole, a long shaft which cannot rotate with the spherical shell is arranged, the installation of a visual camera sensor is convenient, a visual camera can stretch out of the spherical shell through the through hole of the spherical shell, and the limitation of the spherical shell is avoided. A movement mechanism is provided to enable the spherical robot with the binocular stereoscopic vision to have the capacity of being flexible in turning.

A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly. Additionally, the back iron can be a magnetically conductive annular ring, such as is employed in a rotary motor. Moreover, the magnets can be arranged in a manner that generates a Halbach array to increase force output in a desired direction while canceling stray magnetic fields in other directions. Similar reduced-mass designs can be employed in conjunction with a back iron of a fixed cross-section and magnets of variable thicknesses, variable lengths, and/or variable widths. In a case where the arrangement is employed in a platen and forcer system, plates on both the platen and forcer may be scalloped to reduce mass.

The structure of swirl generator for liquid includes a motor with a head affixed to a swirl generator. The bearing seat of the swirl generator forms a fixation section, allowing the swirl extension to be affixed to the inside of the bearing seat easier and quicker, and installing the water guide cover at the opening of the bearing seat. Therefore, the swirl generator structure has advantages of easy assembly and decomposition for repair.

The invention relates to a method for preparing orthorhombic black phosphors monocrystals. The method comprises the following steps: mixing a phosphorus raw material, elemental Sn and a mineralizer SnI4, placing the obtained mixture in a quartz tube, carrying out vacuum pumping and high temperature sealing, placing the sealed quartz tube in a muffle furnace, and carrying out optimized temperature programming and cooling to prepare black phosphorus. Black phosphorscrystals obtained in the invention have the advantages of large size, good crystallization performance and high purity, and the preparation method has the advantages of low device requirements, easy realization, and provision of great convenience for subsequent black phosphorus application and development.

The invention relates to the technical field of aerospace, in particular to a small satellite carrier. The utility model comprises a fairing cabin, three sub-cabins, two sub-cabins, two sub-cabins, one sub-cabin and a tail section which are serially connected in series. The power of the first sub-stage and the second sub-stage are both solid-liquid hybrid rocket motors, and the power of the thirdsub-stage is solid rocket motors. The small satellite carrier provided by the invention adopts a solid-liquid hybrid rocket engine for the power of the first sub-stage and the second sub-stage, the liquid oxidant is physically isolated from the solid fuel before ignition, the safety is high, and the maintenance cost is reduced; the solid-liquid hybrid rocket engine is used for the power of the first sub-stage and the second sub-stage. The third stage is powered by solid rocket motor with high mass ratio, low dead weight and the same payload, which effectively reduces the size of the small satellite carrier and improves the quick response capability. The small satellite carrier provided by the invention can ensure the commercial value and economic benefit, and also has the quick response ability.

A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly.

The invention relates to a preparation method of a flexible lead-acid battery core easy to recycle. The preparation method of the flexible lead-acid battery core is characterized by taking porous glass fiber cloth made of compound sodium alginate fiber as a supporting layer, and comprises the following steps: applying metal flow collection layers to two surfaces of the supporting layer by adopting a vacuum sputtering or vacuum evaporation coating method, coating positive and negative electrode active substances respectively, and drying; spraying a sodium alginate solution on the dried surface, so as to form an isolating layer; and drying so as to obtain the flexible lead-acid battery core capable of being wound. The assembling is performed according to required capacitances, shapes and sizes, electrode leading-out terminals are connected and are pressed in a shell, then an electrolyte is filled in the shell, and the sealing is performed, so that the flexible lead-acid battery core easy to recycle is obtained.

A method of controlling body weight in humans by administering an amount of decaffeinated green coffee extract effective to treat a subject. A preferred green coffee extract contains a ratio of 4-caffeoylquinic acid (4-CQA) to total chlorogenic acids (tCGA) (5-CQA/tCGA) of from about 0.1 to about 0.2. More preferably, the green coffee extract comprises from about 6% to about 8% of 4-caffeoylquinic acid and has a total chlorgenic acid concentration that exceeds about 45%. A preferred method of administration consists of administering the green coffee extracts is a dosage of about 200 mg twice a day prior to meals on an empty stomach.

The invention relates to a nano iron phosphate hollow sphere/graphene composite material with graphene as a carrier, and the nano iron phosphate of a hollow spherical structure with the particle size 50-100nm grows on the graphene. The preparation method of the composite material provided by the invention comprises the following steps: carrying out a hydro-thermal reaction on a mixed liquid containing oxidized graphene, hexahydrate ammonium ferrous sulfate and phosphoric acid at 60-120 DEG C by using urea as a precipitator and adding a surfactant (lauryl sodium sulfate); washing the products;and carrying out vacuum drying, obtaining the nano iron phosphate hollow sphere/graphene composite material. The nano iron phosphate hollow sphere/graphene composite material provided by the invention has the advantages of unique nano hollow structure, excellent electrical conductivity and discharge stability, small particle size, good dispersity and suitability for the anode material of a lithium ion secondary electrode; and the preparation method based on a low-temperature hydro-thermal method is simple and economic, thereby being suitable for realization of industrial large-scale production.

The invention provides a single battery being capable of resisting overloading and high-spinning and being high in capacity. A preparation method includes the steps of: successively tightly laminatinga nickel square-mesh net, a graphite sheet, positive powder, insulation powder, a negative pole sheet and a current collector; surrounding and compacting the outer rings of the insulation powder andthe negative pole sheet by a current blocking ring which is produced by mixing and pulping MgO and asbestos according to mass ratio of 2:1 and punching the mixture into a ring; the insulation powder is a mixture of LiCl-LiBr-LiF ternary eutectic substance and MgO according to the mass ratio of 1:1-1:1.5, wherein the mixture is compressed to form an insulation layer being 0.4-0.6 mm in thickness; the positive powder is a CoS2/FeS2 mixture according to the mass ratio of 1:1, wherein the positive powder also contains insulation powder accounting for 15-18% by mass of the positive powder and lithium oxide accounting for 2-5% by mass of the positive powder. The single battery has strong anti-severe environment capability, can output stable voltage and is high in specific energy, and also satisfies the demand of resisting overloading and high-spinning and being long in service life.

The invention relates to a medicament eluting stent, which consists of a bare stent and a coating coated on the bare stent. The medicament eluting stent is characterized in that the coating at least comprises a polymer layer and a resin layer, wherein the polymer layer comprises polylactic-co-glycolic acid (PLGA) and medicaments; and the resin layer is coated on the surface of the polymer layer. A resin of the invention is coated on the surface of the medicament-loaded polymer coating. Due to the sustained release effect of the resin, on the premise of guaranteeing medicament dosage, the dosage of the polymer is reduced so as to obvious reduce an inflammatory reaction, reduce the generation of adverse reactions such as late intravascular restenosis and the like, and avoid forming late thrombosis.

The invention discloses a storage battery grid. The storage battery grid comprises a lug or at least one lug hole for installing the lug, wherein the storage battery grid is integrally a polygonal honeycomb structure; the storage battery grid is processed from graphite metal eutectic ceramic, wherein the graphite metal eutectic ceramic comprises conductive agent, ceramic composite material and medium material; the graphite metal eutectic ceramic comprises the following in part by weight: 5-20 parts of conductive agent, 55-70 parts of ceramic composite material, and 5-15 parts of medium material. The storage battery grid is used to substitute a calcium lead alloy storage battery grid in a lead-acid storage battery, and simultaneously substitute a lead metal bus bar, so that the dosage (saved about 50-70%) of heavy metal lead in the lead-acid storage battery is reduced, and lead pollution in the production process of the lead-acid storage battery is relieved. The mass of the storage battery grid is 20% of that of the calcium lead alloy storage battery grid, so that the mass ratio of the polar plate reaction substance to the storage battery grid for carrying and conducting is greatly improved.

A method for improving the damage tolerance performance of an Al-Cu-Mg alloy is to carry out a solid solution + water quenching treatment on an Al-Cu-Mg alloy plate, and then perform a cold rolling pre-deformation treatment with a deformation amount of 6-15%, and then Perform aging treatment. The process of the invention is simple and reasonable, through cold rolling with small deformation amount after solid solution quenching, a certain compressive stress layer is generated on the surface of the plate, and the formation and expansion of cracks under the action of fatigue stress are effectively inhibited. With the natural aging treatment, the surface layer has a large density of dislocations due to the pre-deformation of cold rolling, which makes the alloy precipitate large-sized Cu-Mg atomic clusters during the natural aging process, and increases the Cu/Mg mass ratio of the clusters, so that The surface layer of the plate produces a large order strengthening effect and modulus strengthening effect; artificial aging treatment can cause the plate to precipitate a fine and dispersed second phase, and at the same time, the higher density dislocations on the surface can form a finer and dispersed second phase on the surface of the plate. Two phases, thereby hindering the formation and propagation of fatigue cracks in the surface area, and improving the fatigue resistance damage tolerance performance of the plate. This surface-hard-core-tough structure can effectively improve the damage tolerance performance of the plate, and is suitable for industrial applications.

The invention discloses a tuned electromagnetic inertial mass damper, which mainly comprises a ball screw mechanism arranged in an outer barrel. The upper end of the ball screw mechanism is connectedwith a gearbox and a rotary flywheel, and the gearbox is fixed by an upper limit device; the tuned electromagnetic inertial mass damper further comprises an inner barrel arranged at the lower end of the interior of the outer barrel, a lower limit device is arranged on the outer part of the inner barrel, and the inner tube can linearly move up and down in the lower limit device; the upper end of the inner barrel is fixedly connected with the ball screw mechanism to drive the ball screw mechanism to linearly move up and down; and a coil and a permanent magnet are arranged in sequence from the outer side to the inner side of the lower part inside the inner barrel, the permanent magnet is internally and fixedly connected with a magnetic conductor capable of linearly moving up and down, the magnetic conductor extends to the outer sides of the lower ends of the inner barrel and the outer barrel, the lower end of the magnetic conductor body is fixedly connected with the lower part connectionpart and a connection plate of the lower part connection part, and a spring and the connecting plate are fixedly connected with the lower end partof the inner barrel and are mounted outside the magnetic conductor in a sleeving mode. The tuned electromagnetic inertial mass damper is suitable for civil engineering structures with relative displacement, such as stay cable, long span bridge beam and tower beam connection positions, and displacement positions among high-rise buildings.

The invention discloses an integral forming method for an engine case and a spraying pipe, and relates to a process of integrating the spraying pipe and the engine case rapidly and efficiently. The engine case comprises an engine case body and a front end socket connected with the front end of the engine case body, the structure that an engine case and a spraying pipe are formed independently and then connected through metal in the prior art is eliminated, instead, the spraying pipe and an engine case rear connector are combined into a whole, and formed along with the engine case in a winding mode together after the spraying pipe is assembled in place. A winding layer replaces an original spraying pipe metal shell body, the engine case rear connector, the spraying pipe metal shell body, a connector and the like are omitted, and the mass ratio of an engine can be effectively improved. In addition, the integral forming method is simple, short in period, low in price and particularly suitable for the engine case wound by fibers.

The invention relates to the technical field of aerospace, in particular to a small satellite carrier. The utility model comprises a fairing cabin, three sub-cabins, two sub-cabins, two sub-cabins, one sub-cabin and a tail section which are serially connected in series. The power of the first sub-stage is a solid rocket motor, and the power of the second sub-stage and the third sub-stage are bothsolid-liquid hybrid rocket motors. The power of the third stage and the second stage of the small satellite carrier provided by the invention adopts a solid-liquid hybrid rocket engine, the liquid oxidant is physically isolated from the solid fuel before ignition, the safety is high, and the maintenance cost is reduced; The first sub-stage is powered by solid rocket motor with high mass ratio, lowdead weight and the same payload, which effectively reduces the size of small satellite launch vehicle and improves the quick response capability. The small satellite carrier provided by the invention can ensure the commercial value and economic benefit, and also has the quick response ability.

The invention discloses an integral forming method for an engine composite shell and a spray pipe. The integral forming method refers to the process of rapidly and efficiently combining the spray pipe and the engine composite shell into a whole. The engine composite shell comprises a shell main body part and a front connector connected to the front end of the shell main body part. An engine shell and spray pipe flange connecting structure in the prior art is omitted. After assembled in place, a spray pipe assembly is formed together with the engine composite shell in a winding and curing mode. Metal components such as a rear connector, a connecting piece and the like are omitted. The mass ratio of an engine can be increased effectively. Meanwhile, the assembling procedure of the engine composite shell and the spray pipe is omitted, and the assembling and manufacturing period of the engine composite shell and the spray pipe is effectively shortened.

The invention discloses a high-mobility ratio aluminum-doped zinc oxide transparent conductive thin film and a preparation method of the high-mobility ratio aluminum-doped zinc oxide transparent conductive thin film. The high-mobility ratio aluminum-doped zinc oxide transparent conductive thin film comprises a glass substrate, an AZO seed layer and an AZO main part layer from bottom to top in sequence, wherein the thickness of the AZO seed layer ranges from 50nm to 200nm, and the thickness of the AZO main part layer ranges from 800nm to 1300nm; the mobility ratio of the aluminum-doped zinc oxide transparent conductive thin film is 40-60cm2V-1s-1, the electrical resistivity of the aluminum-doped zinc oxide transparent conductive thin film ranges from 2*10-4 omega centimeters to 5*10-4 omega centimeters, and the average transmittance of the aluminum-doped zinc oxide transparent conductive thin film within a wavelength range of 400nm to 1200nm is higher than 80%. According to the high-mobility ratio aluminum-doped zinc oxide transparent conductive thin film and the preparation method of the high-mobility ratio aluminum-doped zinc oxide transparent conductive thin film, high-concentration aluminum oxide-doped AZO is used as the seed player, heat treatment is conducted in a short time through a rapid thermal annealing method, as a result, processes are simple, consumed time is short, consumed energy is little, cost is low, and the high-mobility ratio aluminum-doped zinc oxide transparent conductive thin film is suitable for industrial production and application on a large scale.

The invention discloses a molding method for a graphene modified epoxy resin high-strength fiber wound shell. The molding method for the graphene modified epoxy resin high-strength fiber wound shell comprises the following steps that firstly, oxidized graphene is modified; secondly, modified graphene-enhanced epoxy resin is adopted; thirdly, components and parts of the wound shell are molded; fourthly, graphene modified epoxy resin is adopted, and the composite material shell is molded through wet wrapping of graphene modified epoxy resin; fifthly, the shell is solidified; and sixthly, the shell is demolded, and high-strength graphene modified epoxy resin fiber wound shell is acquired. According to the molding method for the graphene modified epoxy resin high-strength fiber wound shell, graphene is modified so that graphene is fully fused with epoxy resin, then the fiber wound shell is molded through wet wrapping of graphene modified epoxy resin; and the special structural property ofgraphene is utilized to fully strengthen the fiber wound composite material.

The invention provides a hydrogen generation apparatus for chemically producing hydrogen, which comprises: a cover (1), a chamber (2), a material bin (4) and a condenser (5). A gas outlet is formed on the upper end of the cover (1). The condenser (5) and a flow guide trough (9) are fixed in the chamber (2). A water inlet (10) is arranged on the bottom of the chamber (2). The material bin (4) is in the structure of a circular truncated cone. A sealing cover (3) is arranged on the upper part of the material bin (4). Gas pores are formed in the upper end of the material bin (4). A motor (6) is disposed on the bottom of the material bin (4). A sweep sieve (7) and fan blades (8) are mounted on a rotary shaft of the motor (6). The hydrogen generation apparatus can effectively prevent powdery reactants from caking, can reduce temperature increase rate, accelerates heat dissipation, enables the powdery reactants to be reacted fully and increases quality ratio of the powdery reactants to water.

The invention provides a soft-clad lithium battery module applied to an electric vehicle, the module comprises a soft-packed lithium battery, Side panel, foam, Heat sink, battery holder, Connecting tabs, bus tabs, fastening parts and other structures. The use of unique safety-type tabs improves electrical connection safety and reduces battery positioning accuracy requirements. The flexible busbarcan be bent freely to enlarge the use condition of the connecting piece, the module expansion can be realized relatively easily by using the modular bracket, the module structure is simplified by using the composite radiating plate, and so on, so that the soft-packaged lithium battery module has the advantages of compact structure, safety, stability, easy expansion and higher energy density.

The invention relates to gadolinium borate and a preparation method and application thereof. According to preparation of gadolinium borate, Gd<3+> is used as a raw material, and small molecular weight BO3<3-> is used as a ligand. The preparation method comprises the following steps: placing gadolinium oxide and boric acid into a quartz porcelain boat, grinding solids into powders, uniformly mixing, drying, transferring the quartz porcelain boat into a quartz tube furnace, heating to 400 DEG C and keeping the temperature for 10 h, heating to 1000 DEG C and keeping the temperature for 6h, cooling to room temperature to obtain a white powdery solid, washing and carrying out suction filtration, and drying to obtain gadolinium borate. The gadolinium borate which is white powdery crystal can be applied in preparation of magnetic refrigeration materials. Synthetic equipment is simple, and the preparation method is fast and easy to operate. The gadolinium borate is a borate compound and has very strong stability and good heat stability from a strong acid environment to a strong base environment. By raising mass ratio of rare earth to the ligand, magnetic density is raised, and magnetic refrigeration effect of the material is greatly enhanced.