290results about How to "Can be mass produced" patented technology

The invention relates to a conductive-rubber-based flexible array clip pressure sensor and a manufacturing method. In the conductive-rubber-based flexible array clip pressure sensor, upper and lower electrode wires and electrode rings are printed on an upper electrode layer and an electrode layer; the electrode ring is provided with a rubber voltage-sensitive unit; a silicon rubber liner is arranged at the position where sensitive elements do not exist; the rubber voltage-sensitive unit is nested into the silicon rubber liner; the upper and lower electrode wires are led and connected to an electrode lead-out head; the upper and lower electrode layers are sealed by high viscose; and when force acts on the rubber voltage-sensitive unit, the rubber voltage-sensitive unit is compressed and deformed due to stress, so a resistance value of the rubber voltage-sensitive unit is changed, and pressure or concentrated loads at the point contact position can be reflected according to the variablequantity of the resistance value on the rubber voltage-sensitive unit relative to an initial resistance value. By a manufacturing method based on a silk-screen printing process, the flexible array clip sensor has the characteristics of light weight, low cost, simple manufacturing and mass production, and is long in service life and convenient to operate.

The invention relates to a method for preparing a work hardening insulation quilt for a high temperature furnace, which comprises the following steps of: 1, cutting, pre-impregnating and airing a soft quilt; 2, adhering the soft quilt by using an adhesive; 3, pressing and curing for forming; 4, performing carbonization treatment; 5, performing high temperature treatment; 6, machining; 7, performing coating treatment; and 8, performing chemical vapor deposition treatment and high temperature treatment, or directly performing high temperature treatment to obtain the work hardening insulation quilt for the high temperature furnace. The method has the advantages of simple technological process and suitability for mass production; and the prepared work hardening insulation quilt has the heat conductivity of less than or equal to 0.5W / m.K, the ash content of less than or equal to 2,000ppm, high mechanical properties and high-temperature dimensional stability and excellent processability, does not generate volatile matters when used in the high temperature furnace, cannot pollute the product, and has important significance for prolonging the service life of the insulation quilt in the high temperature furnace.

The invention relates to a C / SiC composite coating applied to the surface of a low-density carbon / carbon composite material and a preparation process thereof. The composite coating consists of an inner hole sealing layer and an outer coating. The inner hole sealing layer is prepared from the raw materials in percentage by weight: 10-60% of silicon carbide powder, 1-25% of silicon powder, 0.05-8% of graphite powder, 1-10% of polyacrylonitrile ground carbon fiber and 40-80% of silica sol. The outer coating is prepared from the raw materials in percentage by weight: 10-30% of silicon carbide powder, 40-60% of resin, 30-70% of diluter and 1-6% of curing agent. The invention further comprises the preparation process of the low density C / SiC composite coating made of the carbon / carbon composite material. The C / SiC composite coating applied to the surface of the low-density carbon / carbon composite material provided by the invention is better in oxidation resistance, better in bonding force with a substrate material, compact in surface, free from crack and free from power fall.

The invention discloses a universal gateway design method based on object model and protocol configuration, which sequentially includes the following steps: (a) developing a protocol configuration management platform; (b) generating a specific gateway application program; and (d) assembling a specific function gateway for special occasion. The specific gateway application program is generated by developing a protocol configuration management platform, and the specific function gateway is assembled to a special occasion, thereby to form a specific gateway product. By adopting above technical scheme, the invention has good flexibility, high reliability low cost, and batch production, and ensures the entire function and reliable performance of the gateway.

The invention relates to a skin-core structure fiber intelligent pattern and a printing method and application of the skin-core structure fiber intelligent pattern. The printing method of the skin-core structure fiber intelligent pattern comprises the steps that (1) skin-layer fiber slurry and core-layer fiber slurry are prepared; (2), the skin-layer fiber slurry and the core-layer fiber slurry are input into a coaxial printing needle and then connected with a 3D printing mobile terminal, printing is performed on a substrate according to a preset pattern, and the skin-core structure fiber intelligent pattern can be obtained. A complex three-dimensional skin-core structure which cannot be obtained by an ordinary planar printing technology such as ink-jet printing and silk-screen printing can be realized, custom-made pattern fabrication can be realized, and the prepared structure and pattern can be widely applied to wearable intelligent electronic devices.

The invention discloses a sheet metal pulse current auxiliary micro bending forming device and method, and relates to a micro bending forming device and method. The sheet metal pulse current auxiliarymicro bending forming device and method are used for solving the problems that in an existing micro bending forming process, forming is difficult because a workpiece is difficult to clamp, the accuracy of positioning is low, the amount of springback is large, control is difficult to carry out, and so on. The sheet metal pulse current auxiliary micro bending forming device comprises a die assembly, a loading device, a pulse power source system and a control system. The die assembly is installed in the loading device. The pulse power source system is connected with the die assembly and providespulses for the die assembly. Both the loading device and the pulse power source system are connected with the control system. The die assembly, the loading device and the pulse power source system are automatically controlled through the control system. The micro bending forming method comprises the steps of firstly, installing a micro workpiece; secondly, enabling a male die to make contact withthe micro workpiece; thirdly, loading the micro workpiece; and fourthly, completing the micro bending forming of the micro workpiece. The micro bending forming device and method are suitable for carrying out micro bending forming on the materials which cannot be easily formed or cannot be formed with a common micro bending method.

A process for preparing the superfine powder of sea cucumber includes washing fresh sea cucumber, removing impurities, cutting, freeze vacuum drying, breaking, and superfine pulverizing by fluidized-bed airflow. Its advantages are no pollution and easy absorption.

The invention discloses a preparation method of a decoction piece of superfine traditional Chinese medicine, the surface of which is coated, including the steps of processing, coarse crushing, superfine crushing, tablet forming and granulizing. When the step of the superfine crushing is executed, a surface coating agent is synchronously introduced, and the surface coating agent forms a protective layer at the surface of the traditional Chinese medicine. The method of the invention can retain the effective components of the raw materials of the traditional Chinese medicine and improve the fluidity of the superfine traditional Chinese medicine powder during the processes of traditional Chinese medicine crushing, tablet forming and storing. The decoction piece of superfine traditional Chinese medicine, which is prepared by the invention, can be conveniently used; the dissolution is fast; the biological utilization degree is high; the batch production can be realized.

A method for preparing a large-size sintered samarium cobalt permanent magnet includes the following steps that firstly, a samarium cobalt alloy ingot is smashed, milled and mixed to obtain magnetic powder; secondly, oriented-pressing and forming are conducted in a magnetic field to obtain blanks; thirdly, two or more blanks are spliced together and tightly wrapped by fresh-keeping films, vacuum packaging is conducted, cold isostatic pressing is conducted, and a formed blank is obtained; fourthly, the formed blank is subjected to vacuum pre-sintering, inert gas is introduced for sintering, solid solution is conducted, air cooling is conducted to normal temperature, and a sintered blank is obtained; fifthly, the sintered blank is subjected to aging treatment, cooling and heat preservation are conducted, air cooling is conducted to normal temperature, and the large-size sintered samarium cobalt permanent magnet is obtained through machining. The ultra-large sintered samarium cobalt permanent magnet with the unilateral size larger than 130 mm can be prepared through the method, is good in magnetic property, and can reach the XGS30H trademark magnet standard, the product yield reaches 94% or above, the magnetic property is not changed after temperature-resistant and fatigue testing, and the appearance is normal. The process is simple, large-scale production can be achieved, and the cost is low.

The invention discloses a miniaturized full Stokes vector polarization imaging device based on a binary digital coded birefringent crystal, including a spectral filter (1), an imaging lens (2), a binary digital coded birefringent crystal sheet (3), a micro polarizer array (4), and a light intensity detector (5). Binary digital coding is carried out on the birefringent crystal sheet by making use of the birefringence effect of a birefringent crystal and using a micro sodium optical processing method, and the birefringent crystal sheet is integrated with the micro polarizer array and the light intensity detector to form a compact and fully-functional full Stokes vector polarization imaging device. A full Stokes vector can be acquired through only one exposure, and the real-time performance is good. The device has a compact structure and a stable system. The micro optical structure is large, the requirement on precision is low, the cost is low, and the device can be mass produced. The device has low requirement on environment, and has stable performance. The device can be widely used in important areas such as astronomical polarization imaging, biological tissue detection and medicinediagnosis, remote sensing imaging, and target detection.

The invention provides a composite material device. The device comprises a base body which is provided with a plurality of holes. A plurality of metal particles are attached to the inner walls of the holes. The particle diameters of the metal particles are 1-200 nanometers. The multiple metal particles have at least x different particle diameters d, and the x is greater than or equal to two. The composite material device has the high light absorption rate and the large light absorption bandwidth.

The invention belongs to the technical field of hot setting resins and preparation methods thereof, and provides a maleimide terminated type benzoxazine oligomers and a preparation method thereof. The preparation method comprises two steps. In the step S1, amino phenol and maleic anhydride are used as raw materials for reaction to prepare maleimide functionalized phenols. In the step S2, the maleimide functionalized phenols, bi-amine compounds, bi-phenolic compounds and paraformaldehyde are reacted to prepare the maleimide terminated type benzoxazine oligomer. The maleimide terminated type benzoxazine oligomer prepared by using the method is characterized in that the maleimide groups are introduced in the benzoxazine oligomers to further enhance the degree of crosslinking of benzoxazine resin, and greatly enhance the heat stability benzoxazine. At the same time, the maleimide groups reduce the rigidity of the benzoxazine to make the processing and forming more convenient. The integral preparation is simple in process, low in equipment requirement, and thus suitable for scale production.

The invention relates to a porous active artificial bone. In the porous active artificial bone, a calcium phosphate-based biological ceramic material is used as a matrix, and the porous active artificial bone comprises small pores, dense parts and directional pore channels and chelates with diphosphonate. A preparation method of the porous active artificial bone comprises the steps of preparing calcium phosphate precursor powder, compression molding a ceramic blank by using a pore-foaming agent, polyester fiber and the precursor powder, high temperature sintering into a calcium phosphate-based ceramic sintered body and forming the dense parts, the small pores distributed alternately; and immersing calcium phosphate-based ceramic sintered body in a diphosphonate solution to chelate with the diphosphonate so as to obtain the drug-loaded porous active artificial bone. The artificial bone provided by the invention has longitudinal directional pores and a porous structure suitable for osteoblast migration, propagation and growth metabolism, can slowly release small molecular drugs capable of promoting the growth of the osteoblast and inhibiting osteoclast, and is particularly suitable for the fields of treating bone defects of osteoporosis patients, dental restoration, and the like.

The invention provides a modified anion resin material as well as a preparation method and an application thereof. The preparation method comprises the steps as follows: a strong base type anion resinmaterial is washed and dried, and a dried strong base type anion resin material is obtained; a hydrochloric acid solution of ferric chloride and a hydrochloric acid solution of zirconium oxychlorideare mixed, a mixed solution is obtained, then, the dried strong base type anion resin material is added to a mixed solution to be treated, and the modified anion resin material is obtained. The modified anion resin material can be used as a phosphorus removal adsorbent. Iron oxide and zirconium oxide are successfully loaded on the strong base type anion resin material, so that the modified anion resin material retains the adsorptive property of the iron oxide and the zirconium oxide for phosphorus and provides a fixed environment of good mechanical strength and excellent hydraulic performance,and the excellent adsorption effect of the iron oxide and the zirconium oxide for phosphorus is played.

The invention discloses orientation groove micro / nano-fibres and a preparation method for the same. The orientation groove micro / nano-fibres comprise common groove micro / nano-fibres or beaded groove micro / nano-fibres, and the diameters of the fibres are 50 nanometres to 10 microns. The preparation method for the same comprises the following steps of: preparing polymer solution containing a high-volatility solvent and a low-volatility solvent, and preparing micro / nano-fibres by virtue of an electrospinning technique; preparing micro / nano-fibres with different groove structures, for example, different groove quantities, groove depths, groove distances and the like by adjusting process parameters of a solvent ratio, a solution concentration, a relative humidity and the like. The orientation groove micro / nano-fibres disclosed by the invention have the advantages of large specific surface area, high porosity and the like, and have a wide application prospect in the fields of superhydrophobicity, filter, tissue engineering and the like; the preparation method disclosed by the invention is capable of directly preparing the orientation groove micro / nano-fibres without the need of any aftertreatment process, simple to operate, stable in process, low in cost, and capable of realizing batch production.

The invention discloses a thermal-driving uniaxial drawing / compressive deformation device for a scanning / transmission electron microscope, and belongs to the field of material mechanical property-microscopic structure integrated in situ representation instrument equipment. The integral research on the micro-nano scale material deformation and microscopic structure and physical property evolution is realized. A scanning electron microscope warming table or a transmission electron heating sample rod is used for heating a metal V-shaped beam after corrosion processing, so that the V-shaped beam is thermally expanded. The V-shaped beam is composed of a plurality of thin beams in symmetric structures, the single beam is thermally expanded so as to be bent and deformed under the stress induction; the V-shaped beam can realize the uniaxial deformation of a sample due to the symmetric structure of the thin beams. The uniaxial drawing and uniaxial compressing of the sample can be realized through the change of a geometric structure of the V-shaped beam. The output force and the displacement of the V-shaped beam and the sample deformation rate are regulated through the controlling on the included angle of the V-shaped beam, the three-dimensional geometric size, the heating temperature and the rate. Moreover, the output force of the stress is regulated as drawing force or compressing force through the controlling on the positive and negative of the included angle of the V-shaped beam.

The invention provides a device for the real-time measurement of a sun polarization stokes vector. The device comprises a spectral filter, a wave plate array, a polarizer array and a light intensity acquisition camera. A solar magnetic field provides a driving force and an energy source for the activity outbreak of the sun, while the measurement on the sun polarization stokes vector is the only way for the detection of the solar magnetic field. According to the technical scheme of the invention, a novel device for the real-time measurement of the sun polarization stokes vector is provided. Based on the micro-optical technology principle, the microwave plate array is prepared. On the above basis, the micro-polarizer array is prepared and is attached to the photosensitive surface of the light intensity acquisition camera. In this way, the information of the sun polarization stokes vector can be obtained through the single-exposure process. Compared with a conventional device, the above device is compact in structure and high in real-time property. Meanwhile, the device does not need to be finely tuned or manually operated, and is wide in spectral response range, low in cost and suitable for mass production. At the same time, the occurrence of detection errors, due to the non-uniform response of the camera, aberration and the like, can be avoided. The device can be conveniently extended and applied to other application fields.

The invention provides a soybean acidic albumen powder production technology, mainly comprising the following steps: adding hydrochloric acid with the concentration of 10% in soybean acid precipitation curd lactoprotein to keep the mixture with the pH value of about 2.0 for 30 min; heating the mixture to 35-50 DEG C; adding acid protease preparation and reacting for 60 min; adding phytase and reacting for 20 min; heating to 80 DEG C for 30 min; carrying out physical modification on the obtained proteolysis solution by a high-pressure viscolizer; and carrying out spray drying to obtain the soybean acidic albumen powder. The invention has the advantages of simple technology and mass production. The dissolubility of the acidic albumen powder is improved, the stability of the acidic albumen powder under the acidic condition is enhanced, and the application range of the acidic albumen powder is widened.

The invention relates to a digital differential micro-accelerometer chip which comprises a silicon substrate and two quartz double-end fixing tuning forks, wherein the silicon substrate has the functions of a mass block and a spring; the silicon substrate is composed of the mass block and two cantilever beams for supporting the mass block; a mass block-spring system composed of the mass block and the cantilever beams means the cantilever beams have elasticity along a sensitive direction of the micro-accelerometer chip and the cantilever beams are arranged along one diagonal direction of the mass block; the quartz double-end fixing tuning forks are arranged along the other diagonal direction of the mass block; and the two quartz double-end fixing tuning forks with same structures are arranged in a differential form. The digital differential micro-accelerometer chip can eliminate the influence of temperature on a sensor, can increase the degree of nonlinearity of the sensor and has the advantages of high response speed and high precision.

The invention discloses a glimmer motor accelerometer based on laser feedback interference, comprising upper detecting assembly (1), acceleration sensing unit (2) and down detecting assembly (3), wherein the acceleration sensing unit (2) is between the upper detecting assembly (1) and down detecting assembly (3) and the upper detecting assembly (1) has the same structure with the down detecting assembly. The structure of accelerometer is simple because of laser feedback interference. In order to reduce the size and weight of acceleration, the optimum design for spatial distribution of required parts of the accelerometer is performed. The acceleration sensing unit and glimmer optical reflector are processed by micro-processing technology, at the same time light resource, photo detector and beam collimator are integrated together. Multilayer assembling and packaging are realized using linkage technique, therefore the requirement of accelerometer in precision, reliability, miniaturization and useful life.

One self-check micro mechanical thermopile biology reaction heat detector is the axial symmetry structure, there are silicon oxide and silicon nitride insulation layer in turn on one side of silicon substrate; on the silicon nitride insulating layer there are two groups side by side which are electrothermo couplers formed by two different metals and head-tail connected. The two groups of electrothermo coupler are in axial symmetry and there is bar-shape resistance as self-check element each on axis and two sides of the two groups of coupler. The other sides of the silicone under the heat and cold ends all have heat isolation groove. One end of the two groups of the thermoelectro coupler has pre-heating coil. Preparation: prepare silicone oxide and silicone nitride on silicone sheet; prepare first and second thermopile material and pre-heating coil for self-check material; deep etch on back side to complete thermopile.

The invention discloses a Cr<3+>-doped germanium-containing garnet phase broadband near-infrared fluorescent powder and a preparation method thereof, and belongs to the technical field of near-infrared luminescence. The germanium-containing garnet phase fluorescent powder is prepared by a high-temperature solid-phase method, and the preparation method comprises the following steps: grinding and uniformly mixing solid powder raw materials, calcining at 1200-1500 DEG C for 1-3 times, and finally grinding to obtain a final product. On the basis of a garnet structure with stable chemical properties and high luminous efficiency, the garnet phase structure fluorescent powder containing elements such as germanium, zinc, magnesium, calcium, strontium and the like is constructed in a weak crystal field environment, so that a Cr<3+> emission peak is red-shifted to a near-infrared region. The obtained garnet fluorescent powder realizes red shift of a Cr<3+> emission peak, has excellent propertiesof near-infrared broadband luminescence, wide emission range (650-850 nm), capability of being excited by blue light, high emission efficiency and the like, and is low in raw material cost, simple and convenient in operation method and capable of being produced on a large scale.

The invention provides an internal pressure type swimming pond adopting an assembled structure and a multifunctional swimming pond tent. The swimming pond wall of the swimming pond comprises a swimming pond wall frame body, a pond wall inner wall plate connected to the inner side of the swimming pond wall frame body and a pond wall outer decorating plate connected to the outer side of the swimming pond wall frame body, wherein the swimming pond wall frame body comprises supports arranged at intervals and connecting pipes connected among the supports; the connecting pipes comprise a row of inner connecting pipes and a row of outer connecting pipes; the inner connecting pipes are arranged on the inner sides of the supports from the top down; the outer connecting pipes are arranged on the outer sides of the supports from the top down; the side surface on the side, adjacent to the swimming pond wall frame body, of the pond wall inner wall plate leans against the inner connecting pipes; the side surface on the side, adjacent to the swimming pond wall frame body, of the pond wall outer decorating plate leans against the outer connecting pipes; the pond wall inner wall plate and the pond wall outer decorating plate are connected with the supports through upper pressure plates. According to the swimming pond, the pond wall outer decorating plate can be hung while no steel-structure sway brace is arranged, so that the swimming pond has rich and colorful appearance styles, is very beautiful and is especially appropriate in a square shape.

The invention discloses phosphor series benzoxazine and a preparation method, which is characterized in that 2-hydroxybenzaldehyde and trioxane react to synthesize 5,5'-methylene-bis-2-hydroxybenzaldehyde, then 5,5'-methylene-bis-2-hydroxybenzaldehyde, DOPO (9,10-dihydro-9-oxa-10-phospha phenanthrene-10-oxide), formaldehyde and monofunctional amine are reacted to generate the phosphor series benzoxazine. According to the invention, the synthesis step is simple, DOPO can be directly used to reduce C=N double bond during the synthesis process, after the reaction is completed, a dead cycle is carried out by adding formaldehyde without precipitation, and the synthesis method has the advantages of convenient processing and mass production. When the phosphor series benzoxazine is taken as a hardener and reacted with epoxy resin, the cured epoxy resins with excellent thermal property, thermostability and fire retardant property can be formed.

The invention discloses a LiNbO3 / PAN compound nanofiber electret anti-haze window screening and a preparation method thereof. The window screening comprises three fiber membranes which are a core layer, a substrate and an upper layer. The core layer is LiNbO3 / PAN compound nano fibers, the substrate is a silver plated high molecular netty structure, and the upper layer is a black dacron non-woven fabric. The LiNbO3 / PAN compound nano fibers are adhered to the silver plated high molecular netty structure by means of electrospinning to obtain the silver plated netty structure through which the LiNbO3 / PAN compound nano fibers are attached. The silver plated netty structure through which the LiNbO3 / PAN compound nano fibers are attached is attached to the black dacron non-woven fabric through ultrasonic waves. The LiNbO3 / PAN compound nanofibers are prepared by means of electrospinning. The average diameters of the nanofibers are about 100 nm, and the nanofibers are high in strength and good in filter effect and are easily attached to the high molecular non-woven fabric.

The invention provides a low coupling ultra-wide band MIMO antenna and relates to the field of MIMO antennas. the structure of a common neutralizing wire is deformed so as to achieve de-coupling inside an ultra-wide band. The structure of the neutralizing wire has a square patch in the middle thereof. The two edges of the square patch are parallel to a microstrip line and separately extend a L-shaped metal arm which is connected to a circular printing monopole radiation patch. According to the invention, since the de-coupling structure is arranged between two antenna units, the size of the whole MIMO is smaller; the adding of the de-coupling structure effectively increases isolation of the frequency band; the circular printing monopole radiation patch, the deformed structure of the neutralizing wire and the 50 ohm microstrip line all adopt the printing structure; a medium substrate uses FR4 having a 4.4 dielectric constant, and the FR4 as the most common material for a PCB plate is cheap and easy to purpose. Therefore, according to the invention, the antenna has low manufacturing cost, is easy to process, can be manufactured on a large scale, and has greater practical application value.

The invention discloses a method for extracting sodium lignin sulfonate from a papermaking black liquor employing sulphur treatment. The method is characterized by comprising the following steps: 1, injecting a black liquor into a reaction circulating tank, pumping the black liquor to the top of a reaction absorption tower by using a pump, and spraying down from a solution distribution sieve at the top; 2, feeding an SO2 acid gas generated by a burner into the bottom of a reaction tower by using an exhaust fan through a pipeline, and generating reverse gas-liquid reaction by a gas inside the tower and the black liquor sprayed down from the top; 3, absorbing SO2 in a cycle to carry out sulfuration reaction, so as to control the pH value to 3.5-4.0; 4, sulfonating lignin and finishing winterization to sink into the bottom of the tank after foam of reaction liquid disappears in a precipitation tank, and discharging upper brown liquid to obtain lignin pulp; 5, pumping the pulp into a filter press to filter the liquid by a pump, baking and packaging after crushing a filter cake, so as to obtain the product. The method is low in cost, safety production is achieved, the liquid after reaction is a sodium sulfite solution, and a pulping material, and the solution after lignin is filtered and pressed can be prepared into an alkaline pulp. Thus, cyclic utilization of resources is achieved.

The invention relates to a positive / negative electrode material for a high-performance asymmetric capacitor. The positive electrode material is a high-specific-capacity ternary composite material: polyaniline / graphene oxide / multi-wall carbon nanotube; the negative electrode material is a potassium hydroxide activated GO / MWCNT composite material with a high specific surface area and high conductivity. An electrochemical test for the ternary positive electrode material can prove that the electrochemical performance of the ternary composite material is far better than that of a binary composite material; an electrochemical test for a simple asymmetric capacitor assembled by the negative electrode material also proves that a relatively good electrochemical performance is obtained; the preparation method is simple in process, and the raw materials are free of toxins and hazards; the microcosmic ternary structure of the obtained positive electrode material represents integrated characteristics, wherein GO provides sufficient specific surface areas and are loaded with polyaniline nanorods; the MWCNT coated with polyaniline is bridged between GO pieces; and the negative electrode material shows porous and loosening characteristics, so that the positive / negative electrode material has relatively bright application prospects in the capacitor electrode materials.

The invention discloses a preparation method for modifying a high nickel ternary positive electrode material through multi-component coating. The method comprises the following steps that 1), the highnickel ternary positive electrode material LiNixCOyMn1-x-yO2 (x is lager than or equal to 0.6 and less than or equal to 0. 85, and y is lager than or equal to 0.05 and less than or equal to 0.2) as asubstrate, an aluminum-containing coating A and a boron-containing coating B are added, and a mixture is put into a high-speed mixer for uniform mixing; 2), the mixture is subjected to low-temperature oxygen-rich sintering, after the temperature is raised to 350-700 DEG C at a rate of 3-7 DEG C / min, natural cooling is performed for 5-10 hour, and the modified high nickel ternary positive electrode material is obtained through iron removal and sieving. The preparation method for modifying the high nickel ternary positive electrode material through multi-component coating has the advantages that an adopted solid phase method makes the high nickel ternary material uniformly coated by the two metal elements, can effectively improve free lithium in the material, stabilize the crystal structure, and effectively resist a corrosion reaction of a barrier material and an battery electrolyte; the process is simple, the equipment requirements are low, the practicability is strong, and batch production can be achieved.

The invention provides a sub-wavelength structure for realizing structural color and holographic double anti-counterfeiting effect. The sub-wavelength structure comprises a metal substrate, a metal sub-wavelength structure and a medium protecting layer from bottom to top, wherein the medium protecting layer is only required when the selected metal material is easy to oxidize. The sub-wavelength structure is characterized in that under the function of transmission surface plasma resonance and local surface plasma resonance excited by the metal sub-wavelength structure, the super-narrow band circular polarization conversion is realized, and the high-purity color display is realized; by rotating an anisotropy structure, the geometric phases can be introduced without change of the structural color, the holographic codes are calculated by intersection and combination, and the completely different holographic images can be obtained in a far field; by changing the cycle and size of the sub-wavelength structure, the fork circular polarization spectrum line peak wavelength can cover the whole light wave band, so as to realize the full-color display; the anti-counterfeiting technique based on the sub-wavelength structure can be used for gradually troubleshooting, the structural color is suitable for initial inspection, and the holography is suitable for final inspection. The sub-wavelength structure has the advantages that the security class is high, the imitating threshold of a main template is high, the imitating cannot be reached within shorter time, and the structure is simple.