456results about How to "Large-scale industrial production" patented technology

A microbolometer includes a micro-bridge structure for uncooling infrared or terahertz detectors. The thermistor and light absorbing materials of the micro-bridge structure are the vanadium oxide-carbon nanotube composite film formed by one-dimensional carbon nanotubes and two-dimensional vanadium oxide film. The micro-bridge is a three-layer sandwich structure consisting of a layer of amorphous silicon nitride base film as the supporting and insulating layer of the micro-bridge, a layer or multi-layer of vanadium oxide-carbon nanotube composite film in the middle of the micro-bridge as the heat sensitive and light absorbing layer of the microbolometer, and a layer of amorphous silicon nitride top film as the stress control layer and passivation of the heat sensitive film. The microbolometer and method for manufacturing the same can overcome the shortcomings of the prior art, improve the performance of the device, reduce the cost of raw materials and is suitable for large-scale industrial production.

The invention discloses a polyquaternium polymer emulsion antibacterial agent, a preparation method thereof and an application thereof. The polyquaternium polymer emulsion antibacterial agent comprises the following raw material components in parts by weight: 0.3-3 parts of cationic antibacterial monomer, 0.3-0.7 part of initiator, 60-80 parts of water, 1-14 parts of hard monomer, 1-17 parts of soft monomer, 0.1-1 part of waterproof functional monomer, 0.1-0.3 part of crosslinking functional monomer and 0.1-0.7 part of adhesion functional monomer. According to the technical scheme of the invention, the soap-free emulsion synthesis technique is adopted, so that no emulsifier is adopted. The water oxygen-rich pollution can be reduced. The obtained polyquaternium polymer emulsion antibacterial agent is strong in antibacterial performance, free of dissolution, and good in durability. The polyquaternium polymer emulsion antibacterial agent can make up the blank in the market and can be widely applied to the antibacterial treatment of fabric antibacterial finishing, automotive metal and plastic decorative materials, floors, ceramic products and home appliances. Meanwhile, the polyquaternium polymer emulsion antibacterial agent can be applied to the antibacterial and preservative treatment of aqueous coatings, inks, adhesives and the like.

The invention provides a high-temperature high-coercivity samarium-cobalt permanent magnet material and a preparation method thereof. The permanent magnet material is Sm(Co1-u-v-wFeuCuvZrw)z, whereinu ranges from 0.09-0.18, v ranges from 0.05-0.10, w ranges from 0.02-0.04 and z ranges from 6.9-7.8. The preparation method includes the steps that the rare earth element Sm with the purity of 99.95%,Co with the purity of 99.98%, Cu with the purity of 99.99%, Fe with the purity of 99.9% and Zr with the purity of 99.9% are evenly mixed and smelted into an alloy ingot, and the ingot is subjected tostructure optimization treatment; micron-sized alloy powder is prepared by using the powder metallurgy technology, then orientation forming, high-temperature sintering, solid solution and aging treatment are conducted, and the samarium-cobalt permanent magnetic alloy is prepared. According to the method, the proportion of a TbCu7 structure is effectively improved, and a samarium-cobalt permanentmagnet free of a Zr6(FeCo)23 phase and uniform in structure is prepared, has high coercivity, high magnetic energy and other excellent properties at ultra-high temperature and can be suitable for ultra-high-temperature environments with the temperature of 550 DEG C or above.

The invention discloses a degradable paper plastic composite bag including a plastic layer and a paper layer, the plastic layer is arranged on the surface of the paper layer, the plastic layer includes starch, vegetable fibre, polyvinyl alcohol, poly Beta-hydroxybutyrate, polyethylene, polycarbonate, nanometer titanium dioxide, glycerin, a plasticizer, and a stabilizing agent. The degradable paper plastic composite bag has excellent photodegradation and biodegradation properties, and is mild in degradation conditions and short in degradation time. The nanometer titanium dioxide in the plastic layer further improves the ultraviolet resistance capability of the plastic layer on the basis of having excellent degradability. In addition, the preparation method of the degradable paper plastic composite bag is simple in step and the degradable paper plastic composite bag can be produced industrially in batch because the raw materials are easy to get.

The invention relates to a hollow silicon-carbon composite material and a preparation method thereof. According to the hollow silicon-carbon composite material, the silicon-carbon composite material is spherical or ellipsoid secondary particles; the secondary particles have hollow structures, the shell is formed by compounding graphite sheets, a silicon material and amorphous carbon, the silicon material is uniformly adhered on the surface of the graphite sheet and between the graphite sheets, and the surfaces of all the graphite sheets and the silicon material are covered with an amorphous carbon protection layer; and the graphite sheets for forming the secondary particles are randomly oriented to each other. According to the present invention, the silicon-carbon composite material used as the lithium-ion battery negative electrode has electrochemical characteristics of high capacity, high Coulomb efficiency, low expansion and good cycle performance; the lithium-ion battery prepared from the silicon-carbon composite material has characteristics of high volume energy density, low expansion and good cycle performance; and the preparation process has advantages of simpleness, wide raw material source and low cost, and can achieve the industrial application of the silicon-carbon composite material in the lithium battery field.

The invention relates to a variable thermal resistance based thermoregulation garment, which includes a garment material layer, a flexible semiconductor thermoelectricity array, a garment lining layer, a converter, an adjustable load, a controller and an external power supply adapting piece, wherein the flexible semiconductor thermoelectricity array is placed between the garment material layer and the garment lining layer; the flexible semiconductor thermoelectricity array is connected with the adjustable load through the converter, or is sequentially connected with the controller and the external power supply adapting piece through the converter; the converter is used for switching the connection relation. The thermoregulation garment is convenient and quick in thermoregulation, is well-adapted to thermoregulation, causes no energy waste as temperature variation within a certain range is based on the thermal resistance change of the garment, and realizes the extreme temperature through the heating and refrigeration via the semiconductor thermo-electric effect when electric power supply is adopted, cannot influence the wearing and attractiveness in appearance as a micro-nano flexible element is adopted, can be produced in a large-scale and industrialized manner, and has excellent market prospect.

The invention relates to a carbon fiber surface treatment method. The method comprises that under an atmosphere environment, air is adopted as a carbon fiber surface treatment medium, electroneutral low temperature plasma is emitted by a plasma emitting device for low temperature plasma bombardment to the surface of a moving carbon fiber tow at a speed of 60-150m / h; the ambient temperature of carbon fiber treatment ranges from -10DEG C to 50DEG C; the gap between the carbon fiber and the plasma emitting device is 5-30mm; the ambient humidity of carbon fiber surface treatment is 30-90%; the power of carbon fiber surface treatment ranges from 500 to 800W / tow; and the temperature of carbon fiber surface treatment by low temperature plasma is 30DEG C-100DEG C. The method of the invention can enhance the content of active and polar functional groups on the carbon fiber surface, deepen grooves on the carbon fiber surface, increase the specific surface area, improve the interlaminar shear strength of carbon fiber composite materials, save energy and reduce energy consumption, and is clean and free of pollution.

The invention relates to the field of high-polymer compound materials, and provides a high-thermal conductivity nylon compound material. , which is prepared from the following Raw raw material components include: nylon resin, an enhancing material, a thermal conductivity material and a lubricant, wherein the nylon resin is prepared fromcomprises at least one graphene-containing PA6 resin. The high-thermal conductivity nylon compound material has the following advantages and beneficial effects that the problem of extrusion flying dust caused by small graphene stacking density is solved; graphene in the graphene-containing PA6 resin and a conventional thermal conductivity filler can be organically combined, to generate an unexpected synergistic effect is generated, and so that the technicalbottleneck problem that a conventional thermal conductivity material cannot reach a high thermal conductivity coefficient under awith low loading degree of the thermal conductivity filler is solved; the nylon compound material can be endowed with good thermal conductivity performance by introducing only a small amount of graphene (0.1%-2%) needs to be introduced into a conventional thermal conductivity filler and filledfilling nylon compound material system so that the nylon compound material can be endowed with good thermal conductivity performance, compared with using graphene powder directly, the high-thermal conductivity nylon compound material has the advantages that the adding amount of the graphene is effectively reduced, the production cost is greatly reduced, and large-scale industrial production is feasible.

The invention relates to a laser holographic anti-counterfeiting stamping technology and particularly relates to a metallic coin stamped with a holographic anti-counterfeiting pattern and a manufacturing method thereof and provides the metallic coin which has a laser holographic anti-counterfeiting function and exquisite pattern and is stamped with the holographic anti-counterfeiting pattern and the manufacturing method of the metallic coin. The manufacturing method comprises the following steps of: duplicating a laser holographic image on a metallic nickel plate to form a metal nickel plate for die pressing; coating a release layer, an imaging layer, a die pressing layer, an aluminum plating layer and a dual-layer adhesive layer on a film belt of a base film; positioning, transferring and stamping a laser electrochemical aluminum stamping foil on the metallic coin; heating a stamping head to 80-90DEG C; meanwhile, preheating and improving the temperature of the original metallic coin to 90-100DEG C; and removing the film belt of the base film by the release layer to form the metallic coin with laser holographic pattern. The metallic coin generates a new visual color in the overlapped laser effect and is a novel metal coin anti-counterfeiting type; and in addition, the metallic coin has the advantages of accuracy in positioning, strong three-dimensional sense, abundant layers, simple and quick process, one-time transfer stamping, favorable reproducibility and no pollution.

The invention discloses a rigid polyurethane-aerogel silicon dioxide composite foam plastic which is prepared by foaming the following raw materials: polyether / polyester polyol, a composite catalyst, a foam stabilizer, water, a mixed foaming agent, polyisocyanate and a hydroxy silicon dioxide aerogel solution. The rigid polyurethane-aerogel silicon dioxide composite foam plastic disclosed by the invention is simple in process, can be subjected to large-scale industrialized production and enhances the mechanical strength and heat-insulating property of foams and can be suitable for an extreme ultralow temperature environment by adding hydroxy silicon dioxide aerogel resin.

The invention relates to the technical field of nanometer materials, in particular to a method for preparing a metal hydroxide multi-stage structure through an MOF derivative bimetallic oxide template. Alkali treatment is conducted on the MOF derivative bimetallic oxide template to obtain the metal hydroxide multi-stage structure, M is set into metal in the metal hydroxide multi-stage structure, the MOF derivative bimetallic oxide template is set into MMoO4-MOF derivative bimetallic oxide, and the metal hydroxide multi-stage structure is M(OH)x. The method is simple, mold and universal in preparing process, has no special requirements for equipment, does not use surfactants, and can conduct large-scale industrial production; the metal hydroxide multi-stage structure prepared through the method is uniform in size, stable in structure and even in component distribution and has excellent OER performance and constant-current stability.

The invention relates to the technical field of a gear box cover, and in particular relates to a zinc-aluminum alloy gear box cover and a preparation process thereof. The gear box cover is made of a zinc-aluminum alloy material, wherein the zinc-aluminum alloy material consists of the following chemical components by mass percent: 94.5 to 96.5 percent of zinc, 3 to 5 percent of aluminum, 0.02 to 0.04 percent of magnesium, 0.4 to 0.6 percent of copper, 0.006 to 0.009 percent of iron, 0.002 to 0.004 percent of impurity lead, 0.0005 to 0.0015 percent of cadmium and 0.0001 to 0.0008 percent of tin. The preparation process comprises the steps such as smelting, die-casting forming, polishing, flash removing, grinding and CNC machining. The gear box cover is easier to assemble, high in wear resistance, excellent in mechanical property and long in service life; the process is simple, the quality is stable, the production efficiency is high, the overall cost can be reduced by more than 50 percent, and the industrialized mass production can be realized.

The invention provides an adhesive composition used for a solar backboard. The adhesive composition is prepared from the following components in percentage by weight: 30% to 50% of polyester modified acrylic resin, 30% to 45% of polyester resin and 5% to 40% of an isocyanate curing agent. 2-methylene-1,3-dioxocycloheptane is used for being reacted with an acrylic monomer, so that modified acrylic resin of which a main chain contains more ester bonds is obtained; the modified acrylic resin can be preferably compatible with polyester, the modified acrylic resin and the polyester are cooperatively used, and the adhesive force of the adhesive for PET films, PVF films or EVA films simultaneously can be greatly improved, so that the using performance of the backboard adhesive is greatly improved.

The invention discloses a method for recovering iodine from dilute phosphoric acid in phosphoric acid production with a wet method; iodine is extracted from the dilute phosphoric acid generated in the iodine-containing phosphorus ore production process, wherein, the content of iodine in the dilute phosphoric acid is 50-110mg / L, the concentration of P2O5 in the dilute phosphoric is 25-30%, compound oxidant is added into the phosphoric acid for oxidation reaction, air is used for blowing molecular iodine out, then SO2-containing acidic solution is used for absorbing, the pH value of absorption liquid is between 1-6, then hydrogen peroxide is added to separate iodine out and filtration and separation are carried out to obtain finished iodine. The compound oxidant obtained from the tests conducted by the applicant can improve the efficiency of oxidant and reduce the dosage of oxidant. Proved by the tests performed by the applicant, after the hydrogen peroxide is added with vanadic oxide, the dosage of oxidant can be reduced by 30%; at present, the actual amount of the hydrogen peroxide used for producing 1 ton iodine is 20 tons.

The invention discloses a catalyst for combustion of ventilation air methane and a preparation method thereof. The catalyst of the invention consists of an active ingredient, an active auxiliary agent and a porous carrier, wherein the active ingredient may be one or two of oxides of iron and copper or soluble salts of iron and copper; the active auxiliary agent is any one of cerium or lanthanum compounds; the porous carrier may be one or more of aluminum oxide, titanium oxide, zirconium oxide, magnesium oxide, calcium oxide, silica, aluminium silicate and magnesium silicate; and in form of oxide, the active ingredient accounts for 1 to 50 weight percent, the active auxiliary agent accounts for 1 to 30 weight percent and the carrier accounts for the balance. The catalyst of the invention has a catalytic effect on the combustion of the ventilation air methane and has the advantages that: the preparation method is simple; cost is low; methane ignition temperature and complete combustion temperature are low; and the like.

The invention discloses a reproducible paper-plastic compound bag and a preparation method thereof. The paper-plastic compound bag comprises a plastic layer and a paper layer, wherein the plastic layer is positioned on the surface of the paper layer; the plastic layer comprises polypropylene, polyethylene, starch, polylactic acid, plant fiber, polyhydroxyalkanoate, polycaprolactone, poly-beta-hydroxybutyrate, epoxy resin, wood powder, aluminum sulfate, lactose, dibutyl phthalate and sodium stearate. The reproducible paper-plastic compound bag has excellent regeneration performance and degradation performance, and the preparation method is simple, convenient and practical and is low in cost.

The invention relates to calcium aluminate cement containing nanometer-sized calcium carbonate and a preparation method thereof. The preparation method of the calcium aluminate cement containing nanometer-sized calcium carbonate is based on calcium aluminate used in prior refractory material by adding nano calcium carbonate powder and alumina micropowder. The invention solves the shortcoming of low mid-temperature strength in prior calcium aluminate, and particularly greatly improves the strength around 800 DEG C. The monolithic refractory containing the combined nanometer-sized calcium carbonate has a small change in cold strength under 800 DEG C and 1600 DEG C burning, and the strength of the cold state and the hot state is greatly increased compared with that of prior ordinary monolithic refractory containing the same quantity of CaO made by combining calcium aluminate cement. The invented nanometer-sized calcium aluminate cement containing calcium carbonate can be broadly used in producing refractory material such as refractory casting material, spray material, etc., and can greatly improve mid-temperature strength of material.

The invention relates to the technical field of food additives, in particular to a microencapsulated acidity regulator and a preparation method thereof. The microencapsulated acidity regulator is composed of a wall material and an acidity regulator core material in a weight ratio of 1-30:3-1; the wall material wraps a swelling agent core material and is at least one of distilled glycerin monostearate, sorbitan monooleate, hydrogenated vegetable oil, glycerol monolaurate, diacetyl tartaric acid ester of mono(di)glycerides, polyglycerol fatty acid ester, sodium stearoyl lactate and calcium stearoyl lactate; the acidity regulator core material is at least one of gluconic acid-delta-lactone, malic acid, citric acid and fumaric acid. The microencapsulated acidity regulator has advantages that release speed of the acidity regulator can be controlled under certain conditions, and accordingly reactions of the acidity regulator with other substances in advance in certain environment can be reduced; the microencapsulated acidity regulator is less prone to damping and convenient to store and transport.

The invention discloses a lithium ion battery negative electrode for reducing irreversible capacity loss. The lithium ion battery negative electrode comprises a negative electrode current collector and a negative electrode paste, wherein the negative electrode paste is coated on the surface of the negative electrode current collector and comprises the following constituents based on mass: 25-45% of negative electrode active substance, 0.3-5% of conductive agent, 0.3-5% of binding agent, 0-2% of surfactant, 0.0001-0.01% of lithium salt and 50-70% of water, and the percentage sum of all constituents is 100%. With the lithium ion battery negative electrode disclosed by the invention, the irreversible capacity loss of the battery can be effectively reduced, and the energy density of the battery is improved. The invention also provides a preparation method of the lithium ion battery negative electrode for reducing the irreversible capacity loss. The process step is simple, and the method is high in operability, is easy to implement, and can be completely applied to industrial production of a lithium ion battery at a large scale.

The invention relates to the technical field of cable materials, and in particular relates to a flame-retardant thermoplastic polyurethane (TPU) cable sheathing material with an electromagnetic shielding function and a preparation method of the TPU cable sheathing material. The TPU cable sheathing material comprises the following raw materials in parts by weight: 25-85 parts of thermoplastic polyurethane, 5-45 parts of graphene, 5-35 parts of a flame retardant, 0.5-5 parts of a compatibilizer, and 0.02-0.1 part of an antioxidant. The TPU cable sheathing material provided by the invention has the electromagnetic shielding function, the shielding effectiveness (SE) value can reach 17-50 db, and the flame-retardant effect is excellent; and a single vertical burning test can reach a V0 level,the strength is high, the tensile strength can reach 25.2 MPa or more, the flexibility is good, the elongation at break is high and can reach 405% or more, and the mechanical properties are excellent.

The invention discloses a waterproof paper-plastic compound bag and a preparation method thereof. The waterproof paper-plastic compound bag comprises a plastic layer and a paper layer, wherein the plastic layer is arranged on the surface of the paper layer; the plastic layer comprises starch, polyvinyl alcohol, poly-beta-polyhydroxybutyrate, modified polyacrylate, high density polyethylene, dicumyl peroxide, polyisobutene, polyester fiber, lactose, glycerol, dimethyl phthalate and epoxy resin; the modified polyacrylate comprises a modifying agent and polyacrylate that are mutually compounded; and the modifying agent comprises one or more of organosilicon, organic fluorine and polyurethane. The preparation method of the waterproof paper-plastic compound bag is simple in step, and the raw materials are easy to obtain, so that large-scale industrial production of the waterproof paper-plastic compound bag can be conducted.

The invention discloses an indoor air purifying device based on low-temperature plasma. The indoor air purifying device comprises a shell; inside the shell, a fan, a primary filter screen, a low-temperature plasma reaction device and an adsorptive catalytic layer are sequentially arranged from a base plate to a top face cover; the low-temperature plasma reaction device comprises an insulating bracket; a plurality of low-temperature plasma discharging units are mounted on the insulating bracket; each low-temperature plasma discharging unit comprises an outer layer metal cylinder, an inner layer insulating cylinder and a plurality of metal corona wires; the outer layer metal cylinders and the inner layer insulating cylinders are arranged in parallel at intervals; the metal corona wires are arranged in parallel on the sidewall of each inner layer insulating cylinder; the metal corona wires are connected with the high-voltage end of a power supply; each outer layer metal cylinder is connected with the ground terminal of the power supply; a reaction chamber is formed between the metal corona wires and the outer layer metal cylinders. The indoor air purifying device disclosed by the invention is simple and compact in structure, low in wind resistance, large in air treatment capacity, capable of purifying indoor particulate matters, gaseous pollutants, bacteria, viruses and the like, also high in purification efficiency and good in practicability.

The invention relates to the technical field of a cable material, in particular to a flame-resistant TPU (thermoplastic polyurethane) cable sheath material with an electromagnetic shielding function as well as a preparation method thereof. The TPU cable sheath material comprises the following raw materials in parts by weight: 25 to 85 parts of TPU, 5 to 45 parts of carbon fiber, 5 to 35 parts of flame retardant, 0.5 to 5 parts of compatilizer and 0.02 to 0.1 part of antioxidant. The TPU cable sheath material provided by the invention has the electromagnetic shielding function, the shielding efficacy SE value can reach to 17 to 50 db, the flame-resistant effect is excellent, the flame-resistant effect of single cable sheath cable through vertical combustion test can reach to Level V0, the strength is high, the tensile strength can reach to above 25.5 MPa, the flexibility is high, the breaking elongation is high and can reach to above 410 percent and the mechanical property is excellent.

The invention relates to relates to the technical fields of lead-cadmium-free glass powder and printing ink and particularly relates to lead-cadmium-free compound glass powder for printing ink for a windshield of an automobile. The lead-cadmium-free compound glass powder is characterized by being prepared by adequately mixing Bi2O3-B2O3-SiO2 system glass powder with Nb2O5-ZnO-B2O3-SiO2 system glass powder in a mass ratio of (2-5) to 1, wherein the Bi2O3-B2O3-SiO2 system glass powder comprises the following components in percentage by weight: 10%-45% of Bi2O3, 8%-30% of B2O3, 20%-50% of SiO2, 3%-15% of ZnO, 2%-8% of Na2O and 2%-8% of K2O; and the Nb2O5-ZnO-B2O3-SiO2 system glass powder comprises the following components in percentage by weight: 8%-22% of Nb2O5, 10%-30% of ZnO, 20%-45% of SiO2, 6%-20% of B2O3, 0.5%-4% of MoO3, 0.5%-4% of TiO2, 5%-15% of Na2O, 0.2%-2% of K2O, 1%-5% of Li2O, 0.2%-2% of ZrO2 and 0.2%-2% of Al2O3. The prepared compound glass powder is applied to the printing ink for the windshield of the automobile, so that the printing ink can be adequately fused at 600-650 DEG C in a sintering process, does not crack, is good in glossiness and high in blackness and further has excellent water resistance and acid-base corrosion resistance.

The present invention relates to the technical field of food additives and particularly relates to a microcapsule embedded leavening agent and a preparation method thereof. The microcapsule embedded leavening agent comprises wall materials at a weight percentage of 30%-80% and preservative core materials at a weight percentage of 20%-70%. The core materials of the leavening agent are embedded with the wall materials; the wall materials are at least one of distilled glyceryl monostearate, hydrogenated vegetable oil, diacetyl tartaric acid monoglyceride or diglyceride, polyglycerol fatty acid esters, sodium stearoyl lactate, phospholipids and beeswax; and the core materials of the leavening agent are at least one of sodium bicarbonate, dihydrogen disodium pyrophosphate, calcium hydrophosphate and calcium carbonate. The microcapsule embedded leavening agent is good in use effects, can control the speed of the reaction of the leavening agent, is conductive to releasing in the subsequent baking process, and thereby grants baked food fluffy volume and soft quality.

The invention provides a highly corrosion-resistant, high strength, Al-containing weathering steel plate, wherein the chemical composition comprises in weight percentages (wt %) of: C: 0.02-0.07%, Si: 0.2-1.0%, Mn: 0.2-2.2%, P≦0.01%, S≦0.006%, Cu: 0.2-0.5%, Cr: 0.5-3.5%, Ni: 0.2-1.2%, Al: 0.4-4.0%, N≦0.005%; selectively added one or more of Nb: 0.01-0.06%, Ti: 0.01-0.10%, V: 0.02-0.10%; the balance of Fe and unavoidable impurities, wherein Al / Cr is 0.5-8.0. The steel plate has a yield strength of 350-500 MPa, an elongation of 20% or more, a relative corrosion rate of 27% or less and a good impact toughness and a low yield ratio. The present application also provides a method for manufacturing the weathering steel plate.

This invention relates to an extraction process of brown algae polysaccharides in a field of pharmaceutical chemistry. This invention particularly discloses a process of extracting brown algae polysaccharides based on a microwave chemistry method and brown algae polysaccharides obtained by said process. The process of the invention comprises: 1) putting pulverized brown algae powder into a microwave reaction chamber, adding acid solution to conduct reaction; optionally concentrating the mixer, and then washing with organic solvent to remove excess acid; conducting grading alcohol precipitation after water extract to obtain mannuronic acid rich fragment (M rich) algin, fucoidan and / or laminaran respectively; and adding an alkali solution to the brown algae residue to conduct alkaline digestion, filtering the residue off, adjusting pH of the filtrate to neutral, conducting alcohol precipitation to obtain guluronic acid rich fragment (G rich) algin precipitates. The present invention has significant advantages like fast processing rate, high yield of polysaccharides, strong controllable polysaccharide degradation, using less organic acid and efficient recovery, small water consumption, low power consumption, etc., the active polysaccharides has high yield and content, better water-soluble, and good biological activities.

The invention provides a lithium ion capacitor manufacturing method and a lithium ion capacitor. The manufacturing method includes the steps: (1) assembling a cell; (2) immersing the cell in organic solution containing lithium salt; (3) respectively connecting a positive electrode and a negative electrode with a charge-discharge tester, taking one-time discharge after one-time charge as a cycle and totally performing 1-100 cycles to pre-embed lithium into the negative electrode; (4) taking out the cell, placing the cell into a packaging shell, injecting electrolyte and assembling the single lithium ion capacitor. The manufacturing method can effectively solve the problem of too high cost caused by lithium metal, multi-hole current collector and the like, safety can be improved, technical processes are simplified, and the manufacturing method is applicable to industrial large-scale production.

The invention provides a cloning method for the complete mRNA and DNA sequences of a novel beta-mannanase gene derived from Aspergillus usamii E001, and the nucleotide sequences of the mRAN and the DNA are SEQ ID No.1 and SEQ ID No.2 respectively. Bioinformatic analysis indicates that beta-mannanase belongs to the fifth family of glycoside hydrolase and is named Aus Man5A. The amino acid sequence of the beta-mannanase is SEQ ID No.32 and the corresponding gene of the beta-mannanase is named Aus Man5A. The invention also discloses a construction method of beta-mannanase engineering bacteria and a high-efficiency expression and purification method for recombinant beta-mannanase. The optimal temperature and optimal pH value of the prepared recombinant beta-mannanase are 75 DEG C and 3.5 respectively, the recombinant beta-mannanase is stable in a pH value range from 3.0 to 7.0 and at a temperature of 70 DEG C. The methods have high industrial production potential and economic value.

The invention relates to the technical field of package, in particular to a co-extrusion composite aluminum foil film and a preparation method thereof. The co-extrusion composite aluminum foil film comprises a surface layer, a middle layer and a substrate layer, arranged in sequence from outside to inside; the upper surface of the middle layer is jointed with the lower surface of the surface layer; the lower surface of the middle layer is jointed with the upper surface of the substrate layer; a PET protection film or a PA protection film is arranged on the surface layer; an aluminum foil film is arranged on the middle layer; a multiple-layer co-extrusion film is arranged on the substrate layer; an antistatic coating is jointed to the outer surface of the surface layer. The co-extrusion composite aluminum foil film can be permanently antistatic, has high block-water capability and oxygen barrier performance, is good in sealing effect, better in tensile strength, heat resistance, cold resistance, photopathy, barrier property and chemical stability, is multiple in function and low in cost, and is a good material for manufacturing electronic component packing bags.