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Functional copper foil based on graphene and preparation method thereof
InactiveCN104600320AEliminate foilingReduce the possibility of security incidentsElectrode carriers/collectorsLithiumCopper foil
The invention discloses a functional copper foil based on graphene and a preparation method thereof. The functional copper foil based on graphene comprises a copper foil and a material coating containing graphene. The functional copper foil with the surface uniformly coated with a graphene mixed material is used to replace a copper foil as a lithium ion battery anode current collector, the lithium storage characteristic of graphene is utilized, the foil exposure phenomenon of the current collector in the process of coating the battery material is eliminated, the safety accident incidence during usage of a lithium ion battery is reduced, the integral safety of the lithium ion battery is improved, and the electric conductivity and the heat radiation performance of a lithium ion battery electrode are improved. The provided functional copper foil based on graphene eliminates the foil exposure probability during electrode preparation, and improves the integral safety of the battery. Also, the preparation method of the functional copper foil based on graphene is simple, and easy for realizing industrialization and continuous production.
Owner:SHANGHAI YUEDA NEW MATERIAL TECH
Method for preparing nitrogen doped porous carbon material by using biologic proteins
The invention provides a method for preparing a nitrogen doped porous carbon material by using biologic proteins. The method mainly comprises the following steps: 1, mixing the biologic proteins with an acid or alkali or salt solution; 2, carbonizing the above obtained dried mixture under the protection of inert gas; and 3, carrying out distilled water addition, pumping filtration and washing until the pH value is 6.4-7, and drying to obtain solid powder which is the nitrogen doped porous carbon material. The widely and easily available biologic proteins are adopted as raw materials, and the raw materials comprise silk fibroin, albumen and soybean proteins, so the method has the advantages of simple operating technology, convenient control, cleanness, environmental protection, and easy industrial realization. The prepared nitrogen doped porous carbon material has the advantages of large specific surface area, low ash content and good conductivity. The nitrogen doped porous carbon material can be used in lithium ion batteries, lithium sulfur batteries, super capacitors and other electrode materials, and fields of carbon dioxide capture, hydrogen storage, catalyst carriers, active carbon adsorbents and biologic applications.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Duel-clutch stepless speed change series parallel hybrid power system
InactiveCN101797884AReduce labor intensityRealize stepless speed changeGas pressure propulsion mountingPlural diverse prime-mover propulsion mountingClutchElectricity
The invention discloses a duel-clutch stepless speed change series parallel hybrid power system in the technical field of automobiles, which comprises an engine, a first clutch, a first motor, a second clutch, a second motor, a speed reduction differential gear, a driving axle, a wheel, an energy storing device, a motor control device, an attachment drive transmission gear and a starting motor, wherein a crank shaft output end of the engine is connected with a rotor of the first motor through the first clutch; the rotor of the first motor is also connected with a rotor of the second motor through the second clutch; the rotor of the second motor is connected with the wheel through the speed reduction differential gear and the driving axle; the energy storing device is electrically connected with the motor control device; the attachment drive transmission gear is connected to the rotor of the first motor to provide hybrid drive for attachments for air-conditioning, braking, steering and the like; and the starting motor is connected with the crank shaft output end of the engine through an input end driving disc of the first clutch. The duel-clutch stepless speed change series parallel hybrid power system has the characteristics of entire car stepless speed change series parallel drive, attachment system hybrid drive, low system cost, low development cost, low maintenance cost and the like.
Owner:SHANGHAI JIAO TONG UNIV
Polarized light-emitting diode
InactiveCN101572286AOverall small sizeImprove performanceSemiconductor devicesPolarizerLithography process
The invention discloses a polarized light-emitting diode (LED). An LED chip of the polarized LED comprises a work area consisting of an n-type area, p-type area and a quantum well structure, a substrate, an insulating dielectric film, a transparent electrode and a metal electrode. The polarized LED is characterized in that a raised or embedded grating is prepared on the light-emitting surface of the LED chip, and the grating has the period between 50 and 600 nm, the duty cycle between 0.2 and 0.9 and the thickness between 50 and 400 nm. Compared with the prior LED external polarizer for realizing polarization, the polarized LED adopts a technical proposal of directly integrating and manufacturing a grating structure on the surface of the LED chip and achieving the aim that the emitted light of the LED chip is polarized light with no external polarizer and other structures. Therefore, light-emitting devices are greatly reduced in integral volume, optimized in performances and lower in cost. In addition, the polarized LED can be integrated on a light-emitting chip at a time through a semiconductor lithography process, and is easy to realize industrialization, popularization and application.
Owner:SUZHOU UNIV
Composite automatic synchronous energy transfer equalization circuit and equalization method for series battery pack
InactiveCN102437609AHigh speedImprove efficiencyBatteries circuit arrangementsElectric powerCapacitanceMode control
The invention discloses a composite automatic synchronous energy transfer equalization circuit and an equalization method for a series battery pack. The circuit comprises n composite two-way battery unit energy transfer equalization modules, a master control module and equalization buses, wherein the composite two-way battery unit energy transfer equalization modules are arranged according to the number of battery units in the series battery pack; n is more than or equal to 1; the composite two-way battery unit energy transfer equalization module corresponds to a battery module consisting of k battery units which are connected in series; k is more than 1; and the composite two-way battery unit energy transfer equalization module consists of a switch matrix, an equalization control module, a two-way direct current (DC)-DC module, k discharge equalization circuits and a mode control switch. The composite automatic synchronous energy transfer equalization circuit and the equalization method for the series battery pack are high in reliability, low in cost, small in volume, light in weight, functionally comprehensive and easy to manufacture and use in large scale, and can be applied in the fields of electric vehicles, rail transit, wind-driven power generation and the like by which the series battery pack and a series capacitor bank are required.
Owner:SHANGHAI 01 POWER TECH
Coaxial coupling driving system of double planetary gear systems and double motors
ActiveCN106183780AGood loadabilityReduce labor intensityHybrid vehiclesGas pressure propulsion mountingElectric power transmissionVehicle dynamics
The invention provides a coaxial coupling driving system of double planetary gear systems and double motors. The coaxial coupling driving system comprises the double motors, the double planetary gear systems and the like. Each planetary gear system comprises a gear ring, a planetary carrier and a sun wheel. A rotor of the first motor is connected with the gear ring of the first planetary gear system. A rotor of the second motor is connected with the sun wheel of the first planetary gear system and the sun wheel of the second planetary gear system through synchronizers correspondingly. The planetary carriers of the two planetary gear systems are connected with an output shaft. The gear ring of the second planetary gear system is connected with a shell. The output shaft is connected with the input end of a deceleration differential. The output end of the deceleration differential is connected with two wheels through two half shafts. A motor control device is connected with an energy storage device and conducts electric power transmission. The motor control device is further connected with the first motor and the second motor and outputs a control command. The coaxial coupling driving system has the characteristic that the vehicle dynamic property, the energy consumption economical efficiency, the geographical adaptability and the application adaptability are better.
Owner:SHANGHAI JIAO TONG UNIV +1
Four-die stepless speed change series-parallel hybrid power driving system
ActiveCN102050001ATight structureEasy to Modular DesignGas pressure propulsion mountingPlural diverse prime-mover propulsion mountingClutchEnergy storage
The invention discloses a four-die stepless speed change series-parallel hybrid power driving system, belonging to the technical field of automobile hybrid driving. The system comprises an engine, a clutch, two motors, corresponding transmission chains of the two motors, a power transfer switching device, a planetary gear differential device, a deceleration differential device, an energy storage device and a motor control device. The system provided by the invention has the characteristics of better technical inheritance with existing vehicles, overall dynamic property, fuel economy and low emission, and has functions of four-die driving, stepless speed change and series-parallel system; the problems of insufficient driving power, lack in ramp starting ability, large system volume and high cost of the existing similar technologies and the problems that the stepless speed regulation of the engine cannot be realized and the batch industrialization is difficult as the electromechanical components are difficult to manufacture are solved, and organic combination of high performance, low development cost, low system cost and easy implementation of scale industrialization is realized.
Owner:SHANGHAI JIAO TONG UNIV
Super capacitor device containing millet-husk-based porous active carbon material
InactiveCN106276888ALow ashLow wettability of the surfaceHybrid capacitor electrodesMicrowave methodFiltration
The invention discloses a super capacitor device containing a millet-husk-based porous active carbon material. The millet-husk-based porous active carbon material is prepared by uniformly mixing dried millet husks and an activator, performing carbonization and activation with a microwave device in the protection of an inert gas, adding distilled water to obtained black powder for suction filtration washing till the pH value is 6.4-7, and performing drying to obtain black powder. The black powder is the prepared millet-husk-based porous active carbon material. The millet-husk-based porous active carbon material (an active substance) prepared through the microwave method is mixed with a binder according to a certain mass ratio, distilled water is added for mixing to prepare a thick liquid, and the thick liquid is repeatedly rolled to obtain a sheet electrode material. The electrode material is put on a current collector with the corresponding size, cold pressing is carried out at 1-40 Mpa for 10-200 s, and drying is performed at 120 DEG C to obtain an electrode plate of the super capacitor device. The electrode material in the electrode plate is more than 14 mg per square centimeter. An electrode plate, a membrane, and an electrode plate are assembled into a sandwich structure, then different electrolytes are dropwise added, so that the super capacitor device is assembled.
Owner:YANGZHOU UNIV
Preparation and applications of nitrogen doped porous active carbon material
InactiveCN107128918ASimple design processLow activation temperatureCarbon compoundsHybrid capacitor electrodesCapacitanceNitrogen doped
The invention discloses a nitrogen doped porous active carbon material, which is prepared by burning a carbon precursor prepared from sago cycas, a nitrogen source, and an alkaline inorganic substance. The specific surface of the material is in a range of 1136 to 2628 m<2> / g, and the average aperture is in a range of 1.17 to 2.11 nm. The preparation method comprises the following steps: step one, washing the leaves of sago cycas by water, drying the leaves, grinding the leaves, and burning the leaves to obtain a carbon precursor; step two, mixing the carbon precursor, the nitrogen source, and the alkaline inorganic substance, soaking, drying, burning, and carrying out activation to obtain a nitrogen doped porous active carbon material; and step three, soaking the nitrogen doped porous active carbon material in an acid solution, washing, filtering, drying, and grinding to obtain the final nitrogen doped porous active carbon material. When the material is used as the electrode material of a super capacitor, and if the current density is 1 A g<-1>, the specific capacitance is in a range of 266 to 351 F g<-1>. Leaves of sago cycas are taken as the raw materials, the application range is enlarged; and the material has a wide application prospect in the fields of porous materials and super capacitor.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system
ActiveCN104494415AGood loadabilityReduce labor intensityHybrid vehiclesGas pressure propulsion mountingElectric power transmissionVehicle dynamics
The invention provides a multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system. The multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system comprises a first motor and the like; a planetary gear train comprises a gear ring, a planet carrier and a sun gear; the rotor of the first motor is connected with the gear ring of the planetary gear train; the rotor of the second motor is connected with the sun gear of the planetary gear train and the input end of a transmission chain, respectively; a gear shifting device is connected with the input end of a speed reducing differential mechanism and control on power transfer from the planet carrier of the planetary gear train and the output end of the transmission chain to the speed reducing differential mechanism is realized; the output end of the speed reducing differential mechanism is connected with two wheels by use of two half shafts; a motor control device is connected with an energy storage device to transfer electric energy; the motor control device is further connected with the first motor and the second motor, respectively, and outputs control instructions. The multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system has the characteristics of better technical inheritance to the existing vehicles, whole vehicle dynamic property, fuel economy and low emission.
Owner:SHANGHAI JIAO TONG UNIV +1
LED outputting narrow-band notch filtering light and preparation method thereof
ActiveCN102544265AWith filtering effectAdd resonance filter effectDiffraction gratingsSemiconductor devicesGratingResonance
The invention discloses an LED outputting narrow-band notch filtering light, and a preparation method thereof. According to the invention, a multi-layer waveguide structural layer is composited on the light-emitting surface of an LED chip and comprises a medium depletion layer, a composite grating layer and a medium protective layer; the composite grating layer is a metal / medium grating film layer which is formed by metal strips and medium strips at intervals; the medium depletion layer is positioned below the composite grating layer and is in direct contact with the light-emitting surface of the LED chip; the medium protective layer is above the composite grating layer and is in direct contact with the ambient environment or transparency electrode; and the thickness of each layer of the multi-layer waveguide structure layer, the grating duty cycle and the period parameter are designed to meet the condition of the resonance of the light waveguide mold transmission. According to the invention, a sub-wavelength metal / medium composite grating structure is directly integrated on the surface of the LED chip, and the LED per se has filtering effect; and compared with a traditional passive filter, the LED is a highly integrated active filtering light-emitting device.
Owner:苏州东辉光学有限公司
Broadband angle selection optical fiber and preparation method thereof
ActiveCN104570378ASolve space-time distortionControl workOptical elementsDiffraction orderRefractive index
The invention discloses a broadband angle selection optical fiber and a preparation method thereof. The filter system comprises binary-phase diffraction gratings which achieves symmetric diffraction order distribution and volume Bragg gratings which correspond to the diffraction orders of the binary-phase diffraction gratings. The diffraction light orders of the binary-phase diffraction gratings are sequentially increased from the center to the two sides, the volume Bragg gratings are sequentially placed from the center to the two sides according to a grating period from low to high, and the central axis of the volume Bragg gratings and the central axis of the binary-phase diffraction gratings are symmetrically distributed. Rectangular grid bars are prepared on a grating substrate according to the duty ratio, the period and the grating layer thickness parameter of the gratings, and the binary-phase diffraction gratings are obtained. Gratings are prepared on silicate base photoinduced thermosensitive refractive index glass according to the number of the volume Bragg gratings and the corresponding period and thickness parameters. The broadband angle selection optical fiber has the broadband light input filtering effect, and is simple in structure and good in filtering consistency.
Owner:苏州东辉光学有限公司
Preparation method and application of grapefruit pulp peel based porous carbon material
InactiveCN108584947ASimple design processLow activation temperatureCarbon compoundsHybrid capacitor electrodesCapacitancePorous carbon
The invention discloses a porous carbon material prepared from grapefruit pulp peel, namely by using grapefruit pulp peel to prepare carbon precursor, using alkaline inorganic matter for treatment andcalcining. Specific surface area of the porous carbon material ranges from 972m2 g-1 to 1598m2 g-1, and average pore diameter distribution ranges from 1.76nm to 1.89nm. The preparation method includes following steps: 1), carbonizing grapefruit pulp peel at low temperature; 2), activating the grapefruit pulp peel based porous carbon material; 3), post-treating the grapefruit pulp peel based porous carbon material. When the porous carbon material is applied as a supercapacitor electrode material, Specific capacitance value ranges from 117F g-1 to 315F g-1 when current density is 0.5A g-1. Thegrapefruit pulp peel is used as a carbon source, so that application field of biological materials is expanded; the porous carbon material has extensive application prospect in the field of porous materials and supercapacitors.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Physical concentration and phosphorus reduction method for skarn-type high-phosphorus molybdenum ore
The invention discloses a physical concentration and phosphorus reduction method for a skarn-type high-phosphorus molybdenum ore. The physical concentration and phosphorus reduction method comprises the following steps of (1) crushing, namely crushing raw ores by using a crusher, sieving, and returning a +3mm-grade raw ore to crush until the particle size of the raw ore is up to the -3mm grade; (2) grinding the ores, namely adding the crushed -3mm-grade raw ore into raw ore grinding equipment to carry out closed-circuit ore grinding operation, meanwhile, adding 500-1000g / t of water glass and 250-800g / t of a phosphate mineral inhibitor into a grinding machine, and grinding the raw ore until the particle size is up to the -0.075mm grade and the phosphorus content is up to 55-75%; (3) carrying out roughing operation; (4) carrying out scavenging operation; (5) regrinding a roughed molybdenum concentrate, namely adding 100-280g / t of a sulfur inhibitor and 150-300g / t of a phosphate mineral inhibitor to regrind the roughed molybdenum concentrate in roughed molybdenum concentrate regrinding equipment until the particle size is up to the -0.045mm grade and the phosphorus content is up to 70-95%; and (6) carrying out fine flotation operation. By using the physical concentration and phosphorus reduction method, the phosphorus content of a molybdenum concentrate product can be reduced to be lower than the standard, and a high-quality molybdenum concentrate product can be obtained.
Owner:INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
Lithium ion battery electrode based on graphene and preparation method thereof
InactiveCN104600246AImprove electronic conductivityImprove lithium ion diffusion coefficientCell electrodesSecondary cellsLithium electrodeContinuous production
The invention discloses a lithium ion battery electrode based on graphene and a preparation method thereof. The lithium ion battery electrode comprises a base body and an electrode material coating containing graphene. Graphene is relatively effectively conveniently dispersed in the battery material, the electric conduction characteristic of graphene is utilized and is fully given play, and thus the performances of the electrode material is relatively fully effectively given play, the integral homogeneity and the batch consistency of the lithium ion battery electrode are improved, and various performances of the lithium ion battery are greatly improved. The provided lithium ion battery electrode is high in electron conductivity and large in lithium ion diffusion coefficient. Also, the preparation method of the lithium ion battery electrode is simple in technology, and is extremely easy for realizing industrialization and continuous production.
Owner:SHANGHAI YUEDA NEW MATERIAL TECH
Method for preparing porous carbon material from allyl wastes and application
ActiveCN108557819ALow ashImprove wettabilityCarbon compoundsHybrid capacitor electrodesPorous carbonHeating temperature
The invention discloses a method for preparing a porous carbon material from allyl wastes and application. The preparation method comprises the following steps: S1, heating and carbonizing the allyl wastes in an inert atmosphere, wherein the carbonizing temperature is 400-800 DEG C, and the carbonizing time is 80-150 min; S2, carrying out acid pickling on the product prepared in step S1, and washing the product until the product is neutral; S3, dipping the product prepared in step S2 in a chemical activating agent; and S4, heating and activating the product prepared in step S3, wherein the heating temperature is 700-900 DEG C, and the time is 60-140 min; and carrying out acid pickling, washing and drying to obtain an allyl waste porous carbon electrode material. The method is high in professional applicability, a design process is simple, and industrialization is easy to realize. While the porous carbon material is prepared, the allyl wastes are utilized at high quality, and an obtained porous carbon super-capacitor is excellent in performance.
Owner:SHANDONG UNIV
Double synchronizing clutch and planetary gear coupling double-motor power system
ActiveCN106274443AGood loadabilityReduce labor intensityGas pressure propulsion mountingPlural diverse prime-mover propulsion mountingGear wheelElectric machine
The invention provides a double synchronizing clutch and a planetary gear coupling double-motor power system. The double synchronizing clutch comprises an inner synchronizer and an outer synchronizer which are arranged inside and outside in the radial direction, a first spline hub of the outer synchronizer and a second spline hub of the inner synchronizer are mechanically connected into a spline hub of an integrated structure, a channel is formed in the spline hub, an axial protrusion is arranged on a combining sleeve of the inner synchronizer, penetrates through the channel in the spline hub and is connected with a shifting fork ring groove of the inner synchronizer, an operation mechanism of the inner synchronizer is movably connected with the shifting fork ring groove of the inner synchronizer, an operation mechanism of the outer synchronizer is movably connected with a combining sleeve of the outer synchronizer, a combination tooth ring of the inner synchronizer is connected with a first input / output end, a combination tooth ring of the outer synchronizer is connected with a second input / output end, and the spline hub is connected with a third output / input end. The double synchronizing clutch and the planetary gear coupling double-motor power system have the stepless speed change function and the like, and have the advantage of meeting all-region and multipurpose application requirements.
Owner:SHANGHAI JIAO TONG UNIV +1
Preparation method of titanium dioxide
InactiveCN103523821AMeet all requirementsNarrow particle size distributionTitanium compoundsSlurryTitanium
The invention discloses a preparation method of titanium dioxide. The preparation method concretely comprises the following steps of dissolving titanium tetraoxide by using deionized water to obtain a titanium oxychloride clear solution; adding ammonia water to the titanium oxychloride clear solution; when the ammonia water is added, controlling the acidity of liquid to meet the requirement of controlling the particle size range of the titanium dioxide so as to obtain a mixed buffer clear solution of hydrochloric acid, titanium oxychloride and ammonium chloride; adding a dispersing agent, hydrolyzing at constant temperature to obtain metatitanic acid slurry; adding a surface treating agent, keeping temperature for a certain time, then carrying out pressure filtration, and calcining an obtained metatitanic acid filter cake at high temperature; cooling, crushing, and screening to obtain titanium dioxide powder. The titanium dioxide prepared through the method disclosed by the invention has the advantages of narrow particle size distribution, high crystallinity and controllable particle size, and is easy to disperse.
Owner:韩城市微晶电子材料有限公司
Industrial preparation method of producing nano calcium carbonate by recycling filter-pressing water
InactiveCN103523813AEasy to achieve industrializationQuick responseCalcium/strontium/barium carbonatesCALCIUM HYDROXIDE SOLUTIONCarbonization
The invention relates to an industrial preparation method of producing nano calcium carbonate by recycling filter-pressing water, and is used for solving a problem that a nano calcium carbonate product is poor in repeatability and unstable in quality after the existing water treatment technology is utilized to treat the filter-pressing water in an existing preparation method. The industrial preparation method comprises the following steps: filtering the filter-pressing water in a nano calcium carbonate producting process by using a high temperature resistant filter press, keeping the water temperature at 65 DEG C-85 DEG C, modulating the mass concentration of digested calcium hydroxide liquor to 6%-10%, and controlling the temperature to 22 DEG C-35 DEG C; then, filling into a reaction kettle, regulating the temperature of Ca(OH)2 suspension liquid to 25 DEG C-40 DEG C; ventilating a gas mixture of carbon dioxide and nitrogen gas into a carbonization reaction kettle at the velocity of 0.6-0.8 cubic meter / second, adding a dispersing agent which accounts for 0.02%-0.05% of the total weight of the Ca(OH)2 in the suspension liquid of the Ca(OH)2, heating a nano calcium carbonate sizing agent to 55 DEG C-65 DEG C, and adding a coating agent. The industrial preparation method disclosed by the invention realizes the closed cycle of nano calcium carbonate process water.
Owner:SHANXI LANHUA HUAMING NANO MATERIALS
Preparation and applications of novel porous carbon material with high energy storage performance
InactiveCN111017925ASimple processLow activation temperatureCarbon compoundsHybrid capacitor electrodesLeesPorous carbon
The invention discloses a novel porous carbon material with high energy storage performance, wherein the material is derived and prepared from lees, lees is subjected to low-temperature pre-carbonization to obtain a carbon precursor, and then the carbon precursor and an alkaline inorganic matter are directly mixed and calcined to obtain the lees-derived porous carbon material, wherein the obtainedmaterial is honeycomb-shaped and has a specific surface area of 1000-4000 m<2> / g, the fermentation method of the lees is whole-process semi-solid semi-liquid state fermentation, and the lees is Sanhua wine lees. The preparation method comprises: 1) preparation of a carbon precursor: drying, grinding, and carrying out low-temperature pre-carbonization to prepare the carbon precursor; and 2) preparation of a lees-derived porous carbon material: grinding, mixing, calcining, soaking, washing, filtering, drying, and grinding to prepare the lees-derived porous carbon material.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Preparation method of regular octahedron-type cobaltosic oxide
InactiveCN103964514ASmooth responseReduce security risksCobalt oxides/hydroxidesOctahedronCobalt(II,III) oxide
The invention discloses a preparation method of regular octahedron-type cobaltosic oxide. The preparation method comprises the following steps of 1, mixing a cobalt salt solution having a cobalt ion concentration of 1.0-2.0mol / L and a complexing agent to obtain a mixed solution, 2, preparing a hydroxide solution having a hydroxyl concentration of 5.0-10.0mol / L from a hydroxide, 3, merging the mixed solution and the hydroxide solution, feeding the mixture into a reactor and preparing a cobalt hydroxide suspension liquid, 4, filtering the cobalt hydroxide suspension liquid, washing the filter residue and carrying out drying, and 5, calcining the dried hydroxide solids in a calcining furnace to obtain the regular octahedron-type cobaltosic oxide. The preparation method avoids microwave radiation pollution, comprises a mild liquid phase reaction in a preparation early stage and a calcining oxidation reaction in a preparation later stage, has high safety in the whole preparation process, has low energy consumption, and realizes easy enlargement of the reactor. Therefore, the preparation method easily realizes industrialization.
Owner:NINGBO RONBAY LITHIUM BATTERY MATERIAL CO LTD
Production method of nanometer calcium carbonate for electronic glue
InactiveCN103508479AEasy to achieve industrializationControl the nucleation rateCalcium/strontium/barium carbonatesNanotechnologySlurryWater soluble
The invention relates to a production method of nanometer calcium carbonate for electronic glue, and solves the problems of poor quality reproducibility and instable quality of nanometer calcium carbonate products in the existing preparation method. The method comprises the following steps: Ca(OH)2 suspension taking 40-60% of the volume of a reaction kettle is added in the carburization reaction kettle; the mass concentration of the Ca(OH)2 suspension is 6-9%; the temperature of the Ca(OH)2 suspension is regulated to be 22-30 DEG C, so that the stirring speed of the Ca(OH)2 suspension is higher than 100 r / m, and the speed of a stirring wire at the tail end of a stirrer is higher than 15 m / s; CO2 gas is led in the carburization reaction kettle by the speed of 0.3-0.7 m<3> / s; a dispersing agent taking 0.05-0.25% of total mass of Ca(OH)2 is added in the Ca(OH)2 suspension; one or two of fatty acid or water-soluble phthalate ester coupling agents are prepared into a water solution coating agent; nanometer calcium carbonate slurry is heated to 65-75 DEG C; then the coating agent is added in the slurry; and the mixing time is 1-3 hours. The production method has the advantages of short reaction time and high product quality reproducibility, and industrialization is easy to achieve.
Owner:SHANXI LANHUA HUAMING NANO MATERIALS
Method for comprehensively utilizing ginger straw
ActiveCN110203926AImprove use valueSimple design processHybrid capacitor electrodesCarbon preparation/purificationPorous carbonAcid washing
The present invention provides a method for comprehensively utilizing ginger straw. The method comprises: washing ginger straw, pressing, and separately collecting the juice and the residue after thepressing treatment; separating the oil from the obtained ginger straw juice through standing or by using a centrifuge to obtain a ginger straw crude oil; drying the obtained ginger straw residue, placing in a closed furnace hearth, introducing a protective gas, and heating to carbonize so as to obtain ginger straw charcoal; and carrying out acid washing on the obtained ginger straw charcoal, carrying out water washing to achieve a neutral state, and drying to obtain the ginger straw-based porous carbon, wherein the temperatures of the acid washing and the water washing respectively are 70-90 DEG C. According to the present invention, with the method, the high value utilization of ginger straw waste is achieved, the preparation process is simple, the chemical reagent consumption is less, and the waste utilization rate is high.
Owner:SHANDONG UNIV
Preparation method of three-dimensional graphene film and three-dimensional graphene-copper composite cable
PendingCN109264705ALess structural defectsQuality improvementSingle layer grapheneCarbon-silicon compound conductorsEtchingElectrical conductor
The invention discloses a preparation method of a three-dimensional graphene film and a three-dimensional graphene-copper composite cable. The three-dimensional graphene film is prepared by the following steps: surface cleaning of a nickel screen, graphene growing by high-temperature CVD, soaking / high-temperature curing, substance etching and removal of PMMA; the three-dimensional graphene film has the advantages of few structural defects, few layers, large size and high quality. The graphene-copper composite cable is prepared by a traditional wire and cable conductor preparation technology, and has the advantages of simple process, low cost and easiness in implementing industrial production; the graphene in the conductor is of a 3D network structure, thus the conductor is superior to a pure-metal conductor in electrical conductivity, thermal conductivity and mechanical property.
Owner:SHANGHAI SIMBATT ENERGY TECH CO LTD +1
Method for efficiently recycling rare earth, fluorite and barite from rare earth tailings
The invention belongs to the technical field of energy saving and environmental protection, and provides a method for efficiently recycling rare earth, fluorite and barite from rare earth tailings. The method specifically comprises the following steps of: step (1). adding 100-600g / t of water glass, 50-400g / t of barite inhibitor, and 100-400g / t of rare earth and fluorite collecting agent to tailings pulp, stirring and mixing the pulp; step (2). performing mixed flotation initial separation, scavenging and concentration operation to obtain flotation concentrates and flotation cleaner tailings; step (3). performing strong magnetic initial separation and scavenging operation on the flotation concentrates to obtain strong magnetic tailings which are the final fluorite concentrates; step (4). performing rare earth reselection rough concentration and scavenging operation on the strong magnetic concentrates to obtain rare earth reselection concentrates which are the final rare earth concentrates; and step (5). performing barite reselection roughing separation, scavenging, concentration and concentrate sweeping operation on the floatation cleaner tailings to obtain the barite gravity concentrates which are the final barite concentrates. The method solves the problem of difficult recovery of rare earth, fluorite and barite in the ore, and the obtained target mineral has high grade and high recovery rate.
Owner:四川省地质矿产勘查开发局成都综合岩矿测试中心
Preparation method of anatase black nano titanium oxide powder
InactiveCN104843780AReduce manufacturing costSimple preparation processPhysical/chemical process catalystsTitanium dioxideBatch productionAnatase
The invention discloses a preparation method of an anatase black nano titanium oxide powder. The preparation method comprises the steps of mixing a Ti4+ solution and a Ti3+ solution together to obtain a raw material solution, adding a precipitator to the raw material solution and reacting by stirring under the condition of a pH value within the range of 5-7 to obtain precipitate, filtering and cleaning the precipitate, and then roasting to obtain the anatase black nano titanium oxide powder. The anatase black nano titanium oxide powder product prepared by use of the method is of a pure anatase phase, and can be well controlled in the Ti3+ content. The preparation method is capable of greatly reducing the production cost; besides, the preparation method is simple and fast in process; the preparation method is applicable to batch production and prone to industrialization, and further capable of effectively meeting the production and use requirements of the black nano titanium oxide.
Owner:JINGDEZHEN CERAMIC INSTITUTE
A preparation method of droplet self-driven microreactor and microreactor thereof
ActiveCN105833814BIncrease the gap between hydrophilicity and hydrophobicitySolve the lack of precisionChemical/physical/physico-chemical microreactorsMicroreactorMaterials science
Owner:ZHEJIANG UNIV OF TECH +1
Flame-retardant anti-static fabric and production process thereof
The invention discloses a flame-retardant anti-static fabric which is formed by blending high-performance fiber, flame-retardant fiber and conductive fiber according to the blending ratio of 15:83:2.The flame-retardant anti-static fabric has the advantages of being high in strength, light and soft, durable in laundering and the like, has the excellent comprehensive wearability, and is suitable for popularization, and industrialization and commercialization are easily realized; the product can be applied to traditional protection suits for personnel in flammable and combustible places and canalso be used for protection suits for personnel in special important fields of fire control, military science, spaceflight, aviation and the like.
Owner:JIANGSU BAIHOO TEXTILES TECH CO LTD
Preparation method for extracting edible and medicinal monomer for preventing and treating hyperuricemia and gout from Semen Cuscutae
InactiveCN106727857ATarget enrichmentImprove solubilityPre-extraction tea treatmentSkeletal disorderSolubilityN-Butanol
The invention relates to a preparation method for extracting an edible and medicinal monomer for preventing and treating hyperuricemia and gout from Semen Cuscutae. The method comprises the following steps: crushing the Semen Cuscutae raw material, adding ethanol and heating and refluxing for crude extraction, purifying with a macroporous resin column, detecting and analyzing an eluant by thin layer chromatography, collecting an eluant with a high-proportion target compound and merging, and making the eluant into the product. Semen Cuscutae contains a phenylpropanoid compound. The monomer of the invention is composed of a bistetrahydrofuran ring connecting with glycosyl, has good dissolvability in medium polar solvents, such as n-butanol, ethyl acetate, etc., and has certain water solubility. According to the invention, 60% ethanol is used for decoction extraction, polar macroporous resin is used for purification, and a target monomeric compound group is purposefully enriched. The method is low-cost, has high yield, and is easy for realization of industrialization and mass production. Capsules, tablets, health-care medicinal tea, etc. prepared from the above product are convenient to use and have diversity.
Owner:张清仲
Method for preparing high-purity magnesium oxide by taking bischofite as raw material
The invention relates to a method for preparing high-purity magnesium oxide by taking bischofite as a raw material. The method comprises the following steps: heating bischofite in a high-temperature furnace to 700-900 DEG C at a heating rate of 5-15 DEG C / min, and carrying out primary calcination for 0.5-5 hours to obtain a primary calcined product; and carrying out ultrasonic cleaning on the primary calcined product in water, carrying out suction filtration and water washing, performing drying, performing heating to 700-900 DEG C in a muffle furnace, and carrying out secondary calcination for 0.5-2.5 hours to obtain the high-purity magnesium oxide. According to the method for preparing the high-purity magnesium oxide by taking bischofite as the raw material, comprehensive utilization of salt lake magnesium resources is realized while the ecological environment is protected, and the high-purity magnesium oxide is prepared by a process of calcination-impurity removal (ultrasonic treatment and suction filtration and water washing)-calcination; and the titration of the purity by the EDTA volumetric method shows that the high-purity magnesium oxide with the purity higher than 98% can be obtained, and an effective way is provided for the comprehensive and efficient utilization of salt lake magnesium resources.
Owner:SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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