43results about How to "Relieve oxidation" patented technology

The invention relates to a double-surface polishing method for a gallium antimonide wafer. The double-surface polishing method comprises the following steps of: grouping wafer thickness measurement; initially cleaning a wafer; adhering the wafer; polishing a back surface; dismantling the wafer; adhering the wafer and polishing a positive surface; secondly cleaning the wafer; placing the wafer with polished double surfaces in a solution prepared from cleaning liquid and purified water in volume ratio of 1:(3-10) for ultrasonic cleaning at 50-100 DEG for 10-30min, washing by using the purified water; corroding chemically: preparing corrosion liquid according to a proportion of CH3COOH, H2O and HF in volume ratio of (10-30):(5-15):1; and checking and packing. According to the double-surface polishing method for the gallium antimonide wafer, disclosed by the invention, the gallium antimonide (100) wafer with polished double surfaces can be machined in batch, the method is simple and practical, the maneuverability is strong, and the polished yield is up to 90%; simultaneously, a problem of oxidation of the polished gallium antimonide wafer is released. The gallium antimonide wafer polished by the double-surface polishing method disclosed by the invention is not larger than 20 microns in warping degree, not larger than 4 microns in wafer surface flatness, 0.1-0.2 micron in surface roughness and not larger than 5 microns in total thickness of the wafer, and the defects of the polished wafer, such as dirt, fog, scratch, particles, cracking, orange peel and crow claw, are not detected.

The invention provides a method for treatment of soil containing chromium through coupling of biogas residue microbial inoculum and ferrous sulfate. Soil treated with biogas residue microbial inoculum and soil treated with ferrous sulfate are mixed, and sulfate in ferrous sulfate is reduced by means of sulfate reducing bacteria in biogas residue microbial inoculums to generate sulfide, so that hexavalent chromium can be reduced more effectively and secondary pollution of sulfate is avoided.

The invention discloses a preparation method of a polyvinyl alcohol composite film with embedded silver-wrapped nanoparticles, comprising the following steps: (1) preparing a polyvinyl alcohol-silver nitrate solution; (2)preparing a polyvinyl alcohol-silver nitrate film by using spin coating method or casting film method; and (3) irradiating the polyvinyl alcohol-silver nitrate film with ultraviolet light. The prepared composite film has the characteristics of uniform metal nanoparticle size distribution, controllable dimension, uniform shape, and uniform dispersion.

The invention discloses a GaAs double-faced thin-film solar cell comprising a cell unit or an array composed of a plurality of cell units. Each cell unit comprises a back electrode layer, a device layer and a grid electrode layer. Each grid electrode comprises a first grid structure, each back electrode comprises a second grid structure, a first antireflection film layer is arranged between the device layer and the back electrode layer, and a second antireflection film layer is arranged between the device layer and the grid electrode layer. Each cell unit is in the shape of a regular hexagon or rectangle. The GaAs double-faced thin-film solar cell has the advantages that double-faced light interception of the GaAs thin-film solar cell is realized, light loss is reduced, and photoelectric conversion efficiency is higher; small-gap and even seamless splicing of regular-hexagonal or rectangular solar cells can be achieved to form the cell array, so that energy density of the solar array in unit area is increased, output power of the solar array in unit area is improved, and production cost is reduced remarkably.

The invention discloses a preparation method of a nano-silver antibacterial agent, and belongs to the field of antibacterial technology. Activated carbon is crushed and then mixed with phosphorus pentoxide, mixture is dispersed in absolute ethyl alcohol, the phosphorus pentoxide is dissolved in the ethyl alcohol to form phospholipid, the phospholipid is adsorbed on the surface of the activated carbon, calcium nitrate is slowly combined with hydroxy on a phospholipid hydrolysis product to form hydroxy calcium phosphate crystal nucleuses, the hydroxy calcium phosphate crystal nucleuses are adsorbed in pore structures of the activated carbon, agglomeration is avoided, the crystal nucleuses are washed, dried and then calcined, activated carbon cores are removed to obtain calcined materials with porous structures, the calcined materials serve as carriers, glucose serves as a reducing agent for reducing silver-ammonia solution, and generated nano-silver particles are adsorbed by the calcined materials with the porous structures, finally filtered, washed and dried in vacuum to obtain the nano-silver antibacterial agent. The nano-silver antibacterial agent is good in stability and uniform in dispersion in the use process and has high antibacterial endurance.

The invention discloses a modified iron-copper bimetallic nanoparticle and a preparation method thereof. The modified iron-copper bimetallic nanoparticle includes chitosan and iron-copper bimetallic nanoparticles, wherein chitosan is coated on the surfaces of the iron-copper bimetallic nanoparticles. The preparation method includes: mixing a chitosan solution with a ferrous sulfate solution, adding an NaHB4 solution dropwise for liquid phase reduction reaction, and adding a copper sulfate solution dropwise for in-situ displacement reaction to obtain the modified iron-copper bimetallic nanoparticle. The modified iron-copper bimetallic nanoparticle provided by the invention have the advantages of good dispersibility, strong reducibility, long service life and the like, and is an environment-friendly material that has good application prospects and can be applied to in-situ restoration of heavy metal polluted underground water. The preparation method of the modified iron-copper bimetallicnanoparticle provided by the invention has the advantages of simple operation, low cost, cleanness, no pollution, etc.

The invention provides a method for cooperatively treating hexavalent chromium in contaminated soil through biogas residues and ferrous sulfate. The biogas residues, a carbon source and the ferrous sulfate are mixed and prepared into a mixed agent used for treating chromium-contained soil. In the process, sulfate reducing bacteria in the biogas residues are used for reducing sulfate in the ferrous sulfate to generate sulfide, secondary contamination of the sulfate is avoided while the hexavalent chromium is reduced more effectively, and the sulfate reducing bacteria in the biogas residues and used for reducing the hexavalent chromium can be increased in a large scale.

The invention discloses a novel method for treating chromium slag. Sludge, a carbon source and ferrous sulfate are prepared into chemical agents to be applied into the chromium slag; and then a special curing manner is adopted, and hexavalent chromium slowly released in the chromium slag is gradually reduced. By means of the method, the hexavalent chromium can be efficiently reduced at low cost, and meanwhile secondary pollution of sulfate and the sludge is avoided.

The invention discloses a system and a method for intelligently managing and controlling a signature card. The system comprises at least one client management platform and a sever management platform, wherein the client management platform comprises signature image acquisition equipment and electronic seal-identifying equipment; the signature image acquisition equipment communicates with the electronic seal-identifying equipment through a client internal network; the sever management platform comprises at least one signature card intelligent storage cabinet and a control server; the signature card intelligent storage cabinet communicates with the control server through a server internal network; and the client internal network communicates with the server internal network through a wide area network. Therefore, the searching efficiency of a reserved signature card can be remarkably improved, and labor cost is saved; moreover, the problem that an official seal which is affixed to the reserved signature card is oxidized can be effectively solved, the storage life of the reserved signature card is prolonged, and the success rate during card validation is improved.

The invention provides a preparation method of a surface coating of a zirconium alloy cladding, and further provides the surface coating. The preparation method is characterized in that a carbide target material is adopted to form a carbide coating on a zirconium alloy matrix. The preparation method comprises the steps that mechanical grinding and polishing treatment are carried out on the zirconium alloy matrix; the zirconium alloy matrix is placed in a solution composed of acetone and deionized water to be subjected to ultrasonic cleaning; the zirconium alloy matrix is subjected to low-temperature drying treatment; the carbide target material is subjected to sputtering sintering through a radio frequency magnetron sputtering method, sputtering power is 1200 W or below, the bias range is0 V to 1000 V, and a carbide coating is formed; the zirconium alloy matrix on which the carbide coating is formed is taken out of a magnetron sputtering instrument, and thermal treatment is carried out under an argon environment for 1 h to 3 h at the temperature of 500 DEG C to 700 DEG C; and the zirconium alloy cladding on which the carbide coating is formed is subjected to inspection. Accordingto the preparation method of the surface coating of the zirconium alloy cladding, corrosion resistance and oxidization resistance of the zirconium alloy cladding can be improved.

The invention provides a preparation method of special flavored chicken paste. The preparation method comprises the following steps: pre-treatment, defibrination, enzymolysis, enzyme deactivation, Maillard reaction, mixing and filling. According to the preparation method of special flavored chicken paste, protein macromolecules of chicken are decomposed into free amino acids by means of enzymolysis of protease by taking chicken as a primary raw material. The free amino acids contain a lot of fresh glutamine, glutamic acid, glycine and taurine which is high in functionality and the like and then generate more unique flavor substances by means of Maillard reaction of saccharides and amino acids to from an excellent seasoning with special fresh fragrance. By joint enzymolysis of protease anda flavor enzyme and determination of degree of hydrolysis of the proteins, the enzymatic hydrolysis is relatively thorough when the degree of hydrolysis reaches 30%. The Maillard reaction temperatureis controlled at 120 DEG C, so that a certain empyreumatique substance is generated on the basis of keeping nutritional components, and therefore, the more unique flavor is kept; the effects of beingeconomical and time-saving are achieved at the same time.

The invention discloses a novel method for treating Cr(VI) contaminated soil. Biogas residues, a carbon source and ferrous sulfate are prepared into a medicament to be applied to chromium-containing soil; and then a special curing mode is adopted. The method can reduce hexavalent chromium at low cost and at high efficiency, and prevents secondary pollution of the sulfate and the biogas residues.

The invention provides a food processor, which comprises: a cup body assembly, wherein the cup body assembly is internally provided with a working cavity capable of being sealed, and the cup body assembly is provided with an extraction opening communicated with the working cavity; a screw rod, which can be rotatably mounted in the working cavity, can be used for treating food materials in the working cavity and comprises a rod body and at least one main spiral rib; and a vacuum valve, which is mounted on the cup body assembly, can be used for vacuumizing the cup body assembly through the extraction opening, and can be used for relieving the pressure of the cup body assembly after the cup body assembly is vacuumized. According to the scheme, vacuumizing treatment can be directly realized through the vacuum valve, the pressure relief is performed after the vacuum pumping, a vacuum pump is directly replaced by the vacuum valve, and thusa vacuum pump and a pressure relief device can be removed; and compared with the combination of the vacuum pump and the pressure relief device, the structure of the vacuum valve is smaller and simpler, so that the structure of a product can be simplified, the cost of the product can be reduced and the volume of the product can be reduced while vacuum juicing is performed by using the vacuum valve.

The invention provides an aerosol type metal decontaminating polishing agent and a preparation method thereof. The aerosol type metal decontaminating polishing agent comprises the following components in percentage by weight: 25.0-35.0% of a fatty hydrocarbon solvent, 1.0-3.0% of limonene, 0.5-1.0% of oleic acid, 0.5-1.5% of triethanolamine, 3-6% of a non-ionic emulsifier, 5-10% of aluminum oxide, 5-10% of diatomite, 5-10% of quartz powder, 0.5-1.5% of modified nano silicon dioxide, 30-40% of deionized water, 5-15% of isopropanol and 5-10% of a propellant. The preparation method for the aerosol type metal decontaminating polishing agent comprises the following steps: preparing a composition of the aerosol type metal decontaminating polishing agent by adopting an emulsifying process; and canning the composition into an aerosol tank; and adding a proper of propellant after sealing the aerosol tank, thereby obtaining the aerosol type metal decontaminating polishing agent. Process operations are simple; and the prepared metal decontaminating polishing agent is safe, is environmentally-friendly, and is convenient to use.

The invention discloses an anti-ageing health-care food containing a lumbricus peptide-containing extract and a clamworm peptide-containing extract. Effective components of the anti-ageing health-care food are the clamworm peptide-containing extract and the lumbricus peptide-containing extract in the weight ratio of the clamworm peptide-containing extract to the lumbricus peptide-containing extract being (1-3) to 1. The clamworm peptide-containing extract and the lumbricus peptide-containing extract are prepared through the following steps: taking 500g of fresh clamworms or lumbricus, adding distilled water, performing wall-breaking crushing, and performing ultrasonic leaching for 30min; performing pressure filtration through an ultra-close filtering cloth so as to obtain filtrate containing natural peptide; performing suspension on filter residues with the distilled water, adding papain, performing a reaction under the condition of the temperature being 65 DEG C and pH being 6.5 for 120min, performing pressure filtration with the ultra-close filtering cloth, and repeating enzymolysis and filtration once; and combining filtrate obtained through filtration for three times, performing decompression concentration, and performing freeze drying so as to obtain the lumbricus peptide-containing extract and the clamworm peptide-containing extract. According to the anti-ageing health-care food disclosed by the invention, SOD and GSH-Px in bodies can be increased, the production of MDA in the bodies can be restrained, the anti-ageing health-care food has the efficacies of alleviating oxidation, retarding ageing, blocking oxidative damage and the like, the memory of old-people crowds can be obviously improved, the learning capacity can be improved, and the anti-ageing health-care has significant anti-ageing effects.

The invention relates to an antioxidant red mud doped coating for a high-temperature steel billet. The coating comprises red mud, silicon dioxide, carboxymethyl cellulose, aluminum oxide, magnesium oxide, graphite powder, sodium silicate and water. The mixed powder comprises the following main components in percentage by mass: 15-50% of red mud powder, 20-60% of silicon dioxide powder, 15-75% of aluminum oxide powder, 1-20% of graphite powder, 1-20% of magnesium oxide powder, 5-15% of a high-temperature binder and 0.4-1% of a dispersant. According to the invention of the anti-oxidation coating, the utilization value of the red mud is improved, the treatment capacity of red mud waste is increased, and the pressure of the red mud on the environment is reduced; The antioxidation coating is low in preparation cost and small in environmental pollution, does not pulverize or crack in a high-temperature environment after being brushed, sprayed or dip-coated on a steel billet, forms a layer of compact protection film on the surface of the steel billet, and has good anti-oxidation performance in the heating and heat preservation processes of the steel billet.

The invention belongs to the technical field of adhesive preparation and specifically relates to a waterproof anti-aging plate alignment adhesive preparation method. According to the preparation method disclosed by the invention, lecithin in a soybean extracting solution is utilized as an emulsifying agent, and the lecithin has excellent hydrophobic performance; a hydrophobic layer can be formed on the surface of a latex film, so that water resistance of the latex film is improved; the soybean extracting solution contains a lot of unsaturated fatty acid and can perform esterification with fiber surface hydroxyl, so that compatibility between emulsion and linen fiber is promoted; when fiber is loaded to resin, the flexibility of a plate alignment adhesive film is enhanced, and the plate alignment adhesive film is not prone to brittle rupture. According to the preparation method disclosed by the invention, titanium dioxide is added to whiten the linen fiber; meanwhile, the titanium dioxide can serve as an ultraviolet light absorber, so that the macromolecular plate alignment adhesive is prevented from being damaged; in addition, in a linen fiber oxidizing process, nickel chloride andelhylene diamine tetraacetic acid are chelated, and fluorescence energy radiated to the surface of the plate alignment adhesive can be eliminated by the action among molecules; thus, the waterproof anti-aging plate alignment adhesive preparation method has a wide application prospect.

The invention relates to an anthocyanin sustained-release microcapsule, a preparation method thereof and a skin care product. The anthocyanin sustained-release microcapsule comprises a capsule core material and a capsule wall material wrapping the capsule core material, the capsule core material comprises anthocyanin, the capsule wall material is selected from at least one of sericin peptide and silk fibroin peptide of silk, the molecular weight of the sericin peptide is not greater than 3000 Daltons, and the molecular weight of the silk fibroin peptide is not greater than 3000 Daltons. In the anthocyanin sustained-release microcapsule, the sericin peptide and / or the silk fibroin peptide with specific molecular weight wrap the anthocyanin, so that the biological activity of the anthocyanin is stable; and moreover, the anthocyanin and the sericin peptide and / or silk fibroin peptide with specific molecular weight have a synergistic effect, can promote skin metabolism, relieve oxidation and moisten skin, so that skin oxidation and melanin deposition are slowed down, fine wrinkles of facial skin can be reduced, and the anti-oxidation and whitening effects are achieved.

The invention discloses a printed circuit board type discharge electrode, and belongs to the technical field of discharge electrodes for high-voltage discharge. The printed circuit board type discharge electrode comprises a substrate, wire electrodes and welding points. The substrate is made of an insulation material. Four or more hollowed holes are machined in the substrate, and the substrate isdivided by the hollowed holes into supporting beams distributed in a cross manner. One corresponding wire electrode is printed on each supporting beam of the substrate through a printing or depositionprocess, and the surface of each supporting beam is coated with insulation paint to cover the corresponding wire electrode. The two wire electrodes at each intersection are connected, and therefore acommunicating wire electrode net is formed by all the wire electrodes. The one or more welding points are arranged on the edge of the substrate, and the welding points communicate with the wire electrodes. After the wire electrodes are electrically with an outer high-voltage power source through one welding point, the printed circuit board type discharge electrode carries out discharge work. According to the printed circuit board type discharge electrode, the problems that existing wire electrodes for high-voltage discharge are inconvenient to mount, and the wire electrodes are prone to beingbent, broken and oxidized during moving and using can be solved.

The invention discloses nutritional flavored composite sauce and a preparation method thereof, and belongs to the field of food processing. The method comprises the following steps: peeling and screening raw material seeds, carrying out ultrasonic soaking with a fructo-oligosaccharide solution with a certain concentration, carrying out microwave baking treatment, and carrying out sauce grinding toobtain a sauce material A; performing screening, superfine grinding and 80-100-mesh screening on the removed raw material skin to obtain raw material skin powder, then adding the raw material skin powder into vegetable oil preheated to 80 DEG C, and performing uniform stirring to obtain a sauce B; adding the sauce B into the sauce A, performing uniform stirring, performing homogenizing to obtaina sauce C, performing microwave sterilization, performing cooling, and performing filling so as to obtain the nutritional flavored composite sauce. The method is simple in process, low in energy consumption and low in cost. The obtained product is good in flavor, good in stability, free of layering, high in safety, high in nutritional value, rich in essential fatty acid and easy to digest and absorb.

The invention discloses a preparation method of an enveloping acidulant for feeds, and belongs to the technical field of feed additives. According to the preparation method disclosed by the invention, essential oil is coated with cyclodextrin, a traditional fatty acid enveloping substance is replaced, and the cyclodextrin and the essential oil slowly release and decompose in the stomach and the intestine, so that the release time of the acidulant in animal bodies is shortened, foraging of animals is promoted, and besides, the enveloping acidulant has excellent antibacterial properties, effectively prevents harmful bacteria in gastrointestinal tracts from proliferating, and promotes beneficial bacteria to propagate; besides, the enveloping acidulant is free from excessive fatty acid, effectively controls fatty acid taken in by the animals, protects the livers of the animals, shortens the growth time of the animals, and prolongs the life of the animals; zeolite is used for fixed cross-linking and adsorption modification, so that the quantity of oxygen free radicals is reduced, and the animal organisms are protected; synthetized or modified zeolite can also alleviate the oxidation process in muscular tissues, and can effectively overcome the defects that essential oil is easy to oxidize and decompose in human bodies and enveloping substances are consumed untimely, and the utilization efficiency of the acidulant is improved.

The invention provides a preparation method of TiO2 coating type polyurethane (PU) or thermoplastic polyurethane (TPU) film drag reduction micro-groove used for airship skins, relates to the preparation method of airship skin materials, and aims to solve the problems that the existing stratosphere airship skin is poor in weather resisting property, large in resistance, poor in thermal insulation, low in load and large in volume. The method comprises the following steps of preparing TiO2 sol precursor liquid, coating a TiO2 coating on PU or TPU film to be stamped, preparing aluminum template with a groove structure, washing the template and coating a demolding agent; and stamping the template at a temperature of 135-140 DEG C and a speed of 15-20 kg / cm<2>. The prepared TiO2 coating type PU or TPU film drag reduction micro-groove is clear in marks, good in regularity and prominent in damping reduction effect, and plays significant roles in reducing airship volume, improving load and prolonging time in air; and meanwhile, the TiO2 coating can strongly absorb ultraviolet, can shielding atom oxide, reduce harm of ultraviolet to the film, and increase the weather resisting property. The method provided by the invention can be used for preparing airship skin materials.

The invention discloses a high-rate high-energy density lithium ion battery. Through formulation optimization of a lithium nickel cobalt manganate anode material, structural stability and cycle stability of the anode material at high energy density are improved, and a nano-conductive material is filled in the middle of voids of spherical-like positive electrode particles; under the premise of notaffecting the volumetric energy density of the material, the conductivity of the material and high rate discharge characteristics of the material are both improved. Aluminum oxide coating is coated ona microporous film to improve high temperature resistance and electrolyte absorption retention performance of the microporous film, 1,3-propane sultone is utilized to improve high temperature stability of a high nickel positive electrode, the lithium dioxalate borate is added to improve oxidation resistance of the electrolyte, a stable SEI film is formed on a surface of the positive electrode, the internal hydrofluoric acid content of the battery is reduced, damage of the hydrofluoric acid to the positive electrode material is reduced, and battery performance is improved.

A sodium ion battery positive electrode material precursor has a chemical formula of NixMnyMz (OH) 2, 0.4 < = x < 0.6, 0.2 < = y < 0.5, and 0.1 < z < = 0.3. The preparation method comprises the following steps: 1, preparing a mixed solution of Ni, Mn and M salts; preparing a sodium hydroxide or potassium hydroxide solution as a precipitator; preparing an ammonia water solution as a complexing agent; 2, adding pure water, a precipitator and a complexing agent into the kettle to prepare a base solution; 3, introducing mixed gas of air and nitrogen according to the volume ratio of (3-5): 1, and adding the mixed solution, a precipitator and a complexing agent into a kettle for coprecipitation; overflowing to a concentration machine, and controlling the solid content in the kettle until the material reaches the target particle size requirement; and 4, carrying out filter pressing, washing and drying on the product to obtain the sodium ion battery positive electrode material precursor. The material structure phase change reversibility of the layered sodium ion transition metal oxide in the charging and discharging process can be improved, the sodium ion transmission efficiency is high, meanwhile, polarization is relieved, and the commercialized application requirement can be met.

The invention discloses an outdoor electric energy meter convenient to overhaul, and relates to the technical field of electric energy meters. The outdoor electric energy meter comprises a substrate, a sliding plate is slidably mounted on the substrate, a wiring part is fixedly mounted on one side of the sliding plate, an electric energy meter body is fixedly mounted on the sliding plate, and the conductive end of the electric energy meter body can be electrically connected with the conductive end of the wiring part; and the sliding plate is rotatably provided with a ventilation part, and one end part of the ventilation part is communicated with a cavity connected with the conductive end of the ammeter body and the conductive end of the wiring part. The height of the electric meter body is changed by pulling the sliding plate, and maintenance of the electric meter body is facilitated.

The invention discloses a chip packaging machine which structurally comprises a control table, an operation screen, a pressing mechanism, a conveying rolling belt and a base. The chip packaging machine has the beneficial effects that the pressing mechanism is studied, separation devices in the mechanism are used for conducting separating packaging on chip packaging bags, synchronous classifying can be conducted on chips while packaging is conducted, and filling of vacuum gas is conducted so that it can be ensured that the chips have the good packaging performance; and the separation devices are used so that grid rubber bars in the longitudinal direction and the transverse direction can be formed, it is ensured that the chips can be classified during packaging, in addition, the best sealing performance can be ensured, vacuum gas leakage in the packaging bags is avoided, meanwhile, due to filling of the vacuum gas, oxidation of the chips can be effectively relieved, and the vacuum gas can also serve as a buffering protection layer so that the chips can be prevented from being fractured the first time the chips are impacted.

The invention discloses a modified iron-copper bimetallic nanoparticle and a preparation method thereof. The modified iron-copper bimetallic nanoparticle includes chitosan and iron-copper bimetallic nanoparticles, wherein chitosan is coated on the surfaces of the iron-copper bimetallic nanoparticles. The preparation method includes: mixing a chitosan solution with a ferrous sulfate solution, adding an NaHB4 solution dropwise for liquid phase reduction reaction, and adding a copper sulfate solution dropwise for in-situ displacement reaction to obtain the modified iron-copper bimetallic nanoparticle. The modified iron-copper bimetallic nanoparticle provided by the invention have the advantages of good dispersibility, strong reducibility, long service life and the like, and is an environment-friendly material that has good application prospects and can be applied to in-situ restoration of heavy metal polluted underground water. The preparation method of the modified iron-copper bimetallicnanoparticle provided by the invention has the advantages of simple operation, low cost, cleanness, no pollution, etc.

The invention discloses a GaAs double-faced thin-film solar cell comprising a cell unit or an array composed of a plurality of cell units. Each cell unit comprises a back electrode layer, a device layer and a grid electrode layer. Each grid electrode comprises a first grid structure, each back electrode comprises a second grid structure, a first antireflection film layer is arranged between the device layer and the back electrode layer, and a second antireflection film layer is arranged between the device layer and the grid electrode layer. Each cell unit is in the shape of a regular hexagon or rectangle. The GaAs double-faced thin-film solar cell has the advantages that double-faced light interception of the GaAs thin-film solar cell is realized, light loss is reduced, and photoelectric conversion efficiency is higher; small-gap and even seamless splicing of regular-hexagonal or rectangular solar cells can be achieved to form the cell array, so that energy density of the solar array in unit area is increased, output power of the solar array in unit area is improved, and production cost is reduced remarkably.

The invention discloses a chip packaging machine which structurally comprises a control table, an operation screen, a pressing mechanism, a conveying rolling belt and a base. The chip packaging machine has the beneficial effects that the pressing mechanism is studied, separation devices in the mechanism are used for conducting separating packaging on chip packaging bags, synchronous classifying can be conducted on chips while packaging is conducted, and filling of vacuum gas is conducted so that it can be ensured that the chips have the good packaging performance; and the separation devices are used so that grid rubber bars in the longitudinal direction and the transverse direction can be formed, it is ensured that the chips can be classified during packaging, in addition, the best sealing performance can be ensured, vacuum gas leakage in the packaging bags is avoided, meanwhile, due to filling of the vacuum gas, oxidation of the chips can be effectively relieved, and the vacuum gas can also serve as a buffering protection layer so that the chips can be prevented from being fractured the first time the chips are impacted.