1351results about How to "Good dispersion" patented technology

The invention discloses a method for preparing nano cerium oxide composite abrasive particle polishing solution. The method is characterized by taking inorganic abrasive particles as the inner core and a cerium oxide coating as the shell to form the nano cerium oxide composite abrasive particle polishing solution with a core/shell structure, and belongs to the high-precision polishing material preparation technique technical field. The preparation process of the polishing solution is as follows: firstly, the nano cerium oxide composite abrasive particles are prepared by the homogeneous precipitation method; secondly, the polishing solution is prepared through the cerium oxide composite abrasive particles. During the preparation process of the polishing solution, the weight percent of the cerium oxide composite abrasive particles and water is between 2 and 10 percent, and 0.5 to 2 percent of dispersant is added; after further ultrasonic dispersion or ball milling dispersion of mixture, uniform dispersion liquid is formed; and the nano cerium oxide composite abrasive particle polishing solution is obtained after addition of 0.5 to 5 percent of oxidant, 0.05 to 0.1 percent of corrosion inhibitor and 0.05 to 0.1 percent of lubricant (the addition of various materials takes 100 percent of water as the reference basis). The polishing solution is represented by low surface roughness and scratch level, and then an ultra-smooth surface is obtained.

The invention discloses a preparation method of a single-crystal-morphology lithium ion battery ternary positive material. The method comprises the following steps: (1) preparing an inflorescence-shaped ternary positive material precursor particles by clustering lamellar primary particles in a coprecipitation method, wherein the D50 of the precursor particles is 2-5micron, the BET is more than 100m<2>/g, and the valences of nickel, cobalt and manganese are +2; (2) mixing a precursor obtained by adopting the coprecipitation method with auxiliaries to obtain a mixture 1, and performing high-temperature sintering on the mixture 1 at the temperature between 600-950 DEG C so as to obtain a round-likely roundness type oxide; (3) mixing the round-likely roundness type oxide precursor obtained by the high-temperature sintering with a lithium salt so as to obtain a mixture 2, and performing sintering on the mixture 2 at the temperature between 700-1000 DEG C so as to obtain a product; and (4) dispersing the product obtained by sintering in the step (3), and performing heating treatment on the dispersed product at the temperature between 780-1000 DEG C so as to obtain the single-crystal-morphology lithium ion battery ternary positive material. The prepared positive material is made from the uniform single-crystal primary particles with good dispersibility, and the problem that the primary particles are easy to cluster in the high-temperature sintering process in a conventional method can be effectively overcome.

A grafted polymer, either polyolefin or polyester, containing monomers associated with sludge and varnish control as well as monomers associated with soot handling to provide a graft polymer exhibiting multiple performance attributes. Also described are methods for manufacturing these novel multiple-function graft polymers via solution and melt processes. Lubricating oil compositions containing these novel multiple-function polymers as an additive that display performance characteristics directed to good soot handling and sludge and varnish control as well as control of viscosity increase are described.

The invention discloses a cation modified polycarboxylate superplasticizer which is characterized by being prepared from isoamyl alcohol polyoxyethylene ether monomer a, unitary unsaturated carboxylic acid and a derivative monomer b thereof, cationic monomer c as well as binary unsaturated carboxylic acid and a derivative monomer d thereof through copolymerization in a 7-70 DEG C water solution for 3-8h under the action of an initiator e and a chain transfer agent f and addition of alkali to realize neutralization until the pH is 5-8. Compared with the traditional anionic polycarboxylate superplasticizers, the cation modified polycarboxylate superplasticizer can be adsorbed on the surfaces of cement minerals with positive charge and negative charge when being added into concrete as a cation group is introduced into the molecular structure, and undergoing molecular chain extension in cement paste alkaline environment due to the existence of antipolyelectrolyte effect to make the adsorption form more stretch, so that the water reducing rate of the superplasticizer is higher and the cement particles can be dispersed more sufficiently.

Articles of manufacture and methods for providing energy conserving means to control and/or remove wrinkles from fabric. The article includes an aqueous wrinkle control composition in a package and a set of instructions associated with the package, the set of instructions includes instructions for controlling and/or removing wrinkles in an energy and/or environment conserving manner by applying the composition to wrinkled fabrics, manipulating the fabrics to remove wrinkles and allowing the fabrics to dry without the use of an iron or tumble dryer. Alternatively, the set of instructions can be provided through the electronic or print media or some combination thereof. The instructions can further include an instruction concerning the energy that is conserved through the use of the composition as a substitute for laundering and/or ironing. The instructions can further include a recommendation or endorsement from a government agency, non-profit organization, utility service provider, or some combination thereof.

The invention relates to a core-shell structure cobalt-base catalyst of a middle distillate for synthesis gas preparation, which comprises the following components in percentage by weight: 5 to 30 percent of cobalt and 70 to 95 percent of silica. The catalyst has the following physical properties: the specific surface area is 200 to 1400m<2>/g, the pore volume is 0.5 to 1.3cm<3>/g, the average pore size is 2.0 to 18nm, the cobalt crystallite dimension is 12 to 25nm, and the particle size of the core-shell structure cobalt-base catalyst is less than 100nm, and cobaltosic oxide nano particles are coated in a mesoporous silicon shell to form a core-shell structure. The invention has the advantages of simple operation, high yield, high activity and high selectivity of the middle distillate.

Powder treated with a powder treating agent comprising organohydrogenpolysiloxane, characterized in that the organohydrogenpolysiloxane has a weight average molecular weight of from 300 to 100,000, at least one SiH bond per molecule, and at least one selected from (R²₃SiO_1/2) unit and (SiO₂) unit, wherein R¹ is selected from the group consisting of a hydrogen atom, and alkyl, fluorinated alkyl, aryl and aralkyl groups each having 1 to 30 carbon atoms.

The invention relates to a preparation method of cerium oxide nanoballs, and belongs to the technical field of the preparation processes of the inorganic nanomaterials. The key points of the method of the invention include: stirring and mixing cerium salt and a certain amount of surfactant at room temperature, dissolving the mixture in a mixed solution of water and an organic solvent and ultrasonically processing the mixture for 5 to 10 minutes, wherein the cerium salt is optimally cerium nitrate; the surfactant is most preferably polyvinylpyrrolidone; and the belonged organic solvent is most preferably diglycol; then transferring the mixed solution into a high pressure reaction kettle to perform a solvothermal reaction; heating the mixed solution to perform reaction for 24 to 28 hours at the temperature of 100 to 200 DEG C so as to obtain the cerium oxide nanoball sol; evaporating the sol at the temperature of 1500 o 180 DEG C to dryness; and forging the obtained powder for 1 to 4 hours at the temperature of 400 to 600 DEG C; and finally obtaining the cerium oxide nanoballs in the shape of yellow solid powder. The nanoballs have a particle size ranging from 30 to 160nm and high performance and can be applied in fields of ultraviolet light shielding, mechanical polishing and automobile exhaust catalyzation and the like.

The invention provides a method for preparing molybdenum disulfide nanosheets by ultrasonic-assisted chemical intercalation and belongs to the field of preparation of molybdenum disulfide nanosheets. The method provided by the invention comprises the following steps: performing ultrasonic reaction on molybdenum disulfide powder and n-butyl lithium under the protection of high-purity argon gas to obtain lithium-intercalated molybdenum disulfide; and adding ultra-pure water into a reactant, performing chemical stripping on a molybdenum disulfide bulk material to obtain single-layer molybdenum disulfide nanosheets, adding anhydrous ethanol for washing, and performing ultra-pure water dispersion and high-speed centrifugal separation so as to obtain a single-layer molybdenum disulfide nanosheet material which can be dispersed in water. Compared with the traditional method for preparing the molybdenum disulfide nanosheets by chemical intercalation, the method for preparing the molybdenum disulfide nanosheets, provided by the invention, has the characteristics of high reaction speed, high reaction yield, good stripping effect, simple operation, mild reaction conditions and easiness in large-scale production.

The invention provides a cellulose/silver nano composite material and a preparation method thereof. In the method, the composite material is prepared by using solution of microcrystalline cellulose, a silver salt and a reducer as raw materials and N,N-dimethylacetylamide (DMAc) as solvent and by using a microwave radiation processing method. The cellulose/silver nano composite material prepared by the method has the advantage that the silver nanoparticles have uniform particle size and can uniformly distribute on a cellulose substrate, and therefore has a promising application prospect in biochemical field and in terms of antibacterial performance. The preparation method has the advantages of greatly simplifying production technical process, saving time, reducing cost, along with cheap raw materials, simple process, convenient operation, quick preparation and easily controllable technical conditions. Meanwhile, the preparation method does not require complex and expensive equipment and is favorable for industrial promotion.

The invention discloses a polypropylene color masterbatch and a preparation method thereof. The polypropylene color masterbatch comprises the following components, by weight, 20-70% of polypropylene, 0.01-70% of a toner, 0-40% of a dispersant, 0.1-10% of a foaming agent, 0-10% of a crosslinking agent, 0-2% of a heat stabilizer, and 0-40% of a filler. The preparation method comprises the following steps: burdening and mixing above components according above proportions, carrying out melt blending with a double screw extruder or an internal mixer, and granulating and drying to prepare the color masterbatch. The shape of the color masterbatch is cylindrical, beaded, square or round tablet-like according to different granulating modes. The polypropylene color masterbatch provided in the invention which can be used in coloring products of polypropylene extrusion, spinning and injection molding has the advantages of excellent dispersibility and color stability.

The invention discloses a supported catalyst for eliminating formaldehyde, a preparation method and application thereof. The catalyst comprises an inert carrier, oxide of A and noble metal M, and is characterized in that the inert carrier is gamma-Al2O3 or mesoporous Al2O3 or a pure silicon mesoporous material, the noble metal M is Pt, Ru, Rh, Pd or Au, the A is Ce, Co, Zn, Fe or Ti, wherein the molar ratio of the A to Al or the A to Si is 1:5-25; and the catalyst contains 0.2 to 5 mass percent of noble metal M. The catalyst is prepared by the following steps that: a compound of the A is impregnated onto the inert carrier and then is roasted to obtain an inert carrier supported with the oxide of the A, and then the inert carrier supported with the oxide of the A is supported with noble metal components. The catalyst can maintain higher activity and stability to the formaldehyde at low temperature, and can perform catalytic oxidation on the formaldehyde without other additional devices to transform the formaldehyde into harmless H2O and CO2 further to realize the green elimination of the formaldehyde.

The invention discloses a glass coating with heat-insulating and self-cleaning functions, mainly comprising the following components: a film-forming resin, nano antimony-doped tin oxide (ATO) powder, nano TiO2 powder, a dispersing agent, film-forming additives and the like. Coated by the glass coating, the glass has dual heat-insulating and self-cleaning functions. The energy is saved and the manual wiping work is reduced due to the adoption of the glass coating. In addition, the glass coating is easy to prepare, low in cost and suitable for industrial production.

The invention discloses a preparation method of a magnetic chitosan composite adsorption material. The preparation method of the magnetic chitosan composite adsorption material comprises the steps that ferriferrous oxide magnetic nanoparticles are prepared through a chemical coprecipitation method, silicon dioxide wraps the surface of ferriferrous oxide through a hydrolysis reaction of tetraethyl orthosilicate, glutaraldehyde serves as a cross-linking agent to enable chitosan and ferriferrous oxide wrapped by silicon dioxide to generate a cross-linking reaction to obtain magnetic chitosan, and finally the magnetic chitosan composite adsorption material is obtained by modifying the magnetic chitosan through quaternary ammonium salt. The composite material has the excellent dispersibility, thermostability and weak magnetism, the composite material has the advantages of being high in adsorption capacity, good in adsorption effect, high in adsorption speed, easy to separate and the like to anionic dye in wastewater, and the composite material has a good application prospect in wastewater treatment of the anionic dye.

The invention discloses a glass fiber impregnating agent for a transparent plate, which basically comprises the following components in percentage by weight: 0.15-1.0 percent of silane coupling agent, 3.0-20.0 percent of binding agent, 0.02-1.0 percent of lubricating agent, 0.05-0.8 percent of antistatic agent, 0.1-2 percent of pH value adjusting agent and the balance of deionized water, wherein the binding agent is epoxy-ester emulsion or a mixture of PVAc emulsion and the epoxy-ester emulsion, and the contents of the PVAc emulsion and the epoxy-ester emulsion are calculated by respective solid content. The invention adopting the epoxy-ester emulsion or the mixture of the PVAc emulsion and the epoxy-ester emulsion as the binding agent can improve the glass fiber impregnating speed and the production efficiency; in addition, the light refractive rates of the impregnating agent and matrix resin are close, and the transmittance of the produced plate is high.

The invention provides a solar silicon slice cleaning agent, and belongs to the field of cleaning agents for electronic industry. The cleaning agent of the invention mainly comprises sodium hydroxide, sodium carbonate, sodium silicate, disodium edentate, sodium dodecyl benzene sulfonate, sodium dioctyl sulfosuccinate, polyethylene glycol, Tween-80, OP-10, triethanolamine, anhydrous alcohol or normal butyl alcohol or isopropyl alcohol or a composition of anhydrous alcohol, normal butyl alcohol or isopropyl alcohol, and deionized water. The cleaning agent is alkaline, does not contain sulfur and phosphorus additives, and when used as alone, has the advantages of good decontamination and cleaning property, low slice-returning rate, long service cycle, no corrosion to silicon slice, low operational requirements in use, easy treatment of treated waste oil and sewage, and the suitability for manual, semi-automatic and full automatic ultrasonic cleaning production lines of various process; in addition, the cleaning rate is over 99 percent, the slice-returning rate is close to zero, and the cost of the process of the invention is one tenth to one twentieth of that of the conventional cleaning process.

The invention provides a preparation method of graphene, which belongs to the technical field of synthesis of graphene and nano materials. The graphene is prepared by utilizing graphite oxide as a raw material and adopting environmental-friendly tea polyphenol/green tea juice as a reducing agent through a chemical reduction method without adding any stabilizing agent/dispersing agent. A graphene aqueous solution prepared by the invention has favorable dispersibility and stability without settling after standing for several months or generating an agglomerating phenomenon. The preparation method provided by the invention has advantages of simple process, easy popularization, low cost of the selected reducing agent, environmental protection and adaption of the requirements for low cost, large scale and green production. Any organic stabilizing agent/dispersing agent is not added in the process of preparing the graphene, which is beneficial to the following application of the graphene; and the adopted reducing agent and a reduzate which are environment-friendly have biocompatibility, and the prepared graphene is expected to be applied to the field of biochemistry.

The invention relates to a catalyst for preparation of ethanol through acetic acid hydrogenation and a preparation method thereof, and provides a catalyst for preparation of ethanol through acetic acid hydrogenation, which is environment-friendly, mild in conditions, excellent in catalysis performance and high in stability, and a preparation method thereof. The catalyst comprises the following components in percentage by mass: 0.5-2% of platinum, 0.5-6% of tin and the balance of carrier; and the composition of the catalyst is expressed as x%Pt-y%Sn/carrier, wherein x% represents the mass percent of Pt in the catalyst, y% represents the mass percent of Sn in the catalyst, and the carrier is silicon carbide or carbon nanotube. The preparation method of the catalyst comprises the following steps: mixing surfactant sodium lauryl sulfate with the platinum and tin components; then adding the carrier; performing liquid-phase reduction to prepare a catalyst precursor; and roasting the catalyst precursor under the air atmosphere to obtain the supported platinum-tin bimetallic catalyst for acetic acid hydrogenation. The invention has the advantages of simple preparation process and good repetitiveness, and is easy to implement scale-up production.

The present invention provides a nonflammable water-based cutting fluid composition which affords excellent dispersion property of abrasives, which does not cause problems involving in flammability upon the use for cutting process of a hard and brittle materials, which can be readily washed, and which can achieve sufficient rust preventive property even if it is used in an equipment for oil use. Provided by the present invention is a nonflammable water-based cutting fluid composition containing a polycarboxylic acid-based polymer compound and/or a salt thereof having a weight-average molecular weight of 1,000-200,000, and additionally a carboxylic acid and/or a salt thereof upon needs for a rust preventive property.

The invention belongs to the technical field of advanced nano materials, and particularly relates to a magnetic mesoporous silica composite microsphere with a Yolk-Shell structure and a manufacturing method of the magnetic mesoporous silica composite microsphere. Firstly, a sol-gel chemical synthesis method is adopted, and a magnetic nanoparticle is coated with a macromolecule layer of amorphous silicon dioxide and a macromolecule layer of polymer resin in sequence; then the self-assembling behavior of organic surface active agents as structural guiding agents and inorganic substances in solutions is utilized, and the magnetic nanoparticle is coated with a layer of silicon dioxide/surface active agent composite materials with an ordered mesostructure; the surface active agents and the macromolecule layers are removed through roasting, and then the materials of the magnetic mesoporous silica composite microsphere with the Yolk-Shell structure are obtained. The composite microsphere is provided with a large adjustable cavity, a high specific surface area and mesoporous shell layers evenly perpendicular to an interface, has magnetic responsiveness strong in stability, and has wide application prospects in nanoreactors, drug sustained release, high-capacity bioseparation and absorption. The method is simple, raw materials are easy to obtain, and amplification production can be achieved.

The present invention relates to a method for preparing an [alpha]-Fe2O3 nanoparticles with a controllable shape and size. The present invention adopts a hydrothermal method to synthesize the [alpha]-Fe2O3 nanoparticles in one step under the structural guide of amino acid. The trivalent ferric salt and the amino acid are dissolved in 100ml water according to different mol ratios and magnetically stirred to give a defecated clear solution. The defecated clear solution is poured into a reaction kettle of 150 ml, sealed heated to temperature of between 100 and 180 DEG C, kept at the temperature for 24 hours, cooled to room temperature, and then is subject to water cleaning, ethanol cleaning and drying, and thus the product is obtained. The shapes of the [alpha]-Fe2O3 nanoparticles can be controlled by applying different amino acids, and the sizes can be adjusted by changing the reaction conditions. The method is simple in process, well dispersible in water phase, low in cost, free of pollution and suitable for industrialized production.

The invention provides a chitosan nano-microspheres product in which the average grain size of the chitosan nano microspheres is from tens of nanometers to ten micrometers and the grain size distribution coefficient C.V. is less than 20%. The invention also provides a preparation method and an application of the chitosan nano microspheres.

The invention discloses a grifola frondosus liquid strain and a method for cultivating grifola frondosus by using the liquid strain. The liquid strain has good dispersion and strong fluidity, and can quicken the growth speed of the strain and shorten the fermentation time; and bag hypha prepared from the liquid strain grows healthily, the growth of each part is uniform, the fungus age is regular, and the grown mushroom is regular and facilitates factory management.

The invention provides a preparation method of a water-based adhesive for lithium batteries. The preparation method comprises the following steps: dripping water soluble acrylic monomers, oil soluble acrylic monomers and an initiator into a styrene-butadiene-styrene block copolymer (SBS) emulsion, and carrying out a stirring and heating reaction to obtain the water-based adhesive for lithium batteries; the weight ratio of the water soluble acrylic monomers to the oil soluble acrylic monomers to the initiator to the styrene-butadiene-styrene block copolymer (SBS) emulsion is (2.5-15) : (10-25) : (0.5-10) : 100. By adopting the invention, the technical problems of the existing water-based adhesive for lithium batteries of few varieties, high dosage, low dispersion efficiency and longer dispersion period are solved, the water-based adhesive prepared by the method disclosed by the invention has better bonding performance and dispersion effect, has high dispersion efficiency on such electrode materials as graphite, and has the advantages of low dosage and excellent cycle performance.

The invention discloses a Mn-Ce supported low temperature denitration catalyst and a preparation method thereof. The catalyst is mainly composed of cerium nitrate hexahydrate, urea, PAA, potassium permanganate, manganese nitrate, and glacial acetic acid; and is prepared by the following steps: preparing a cerium dioxide carrier and loading active components on the carrier through hydrothermal deposition. Common chemical reagents such as cerium nitrate, urea, and the like are used to prepare the nano cerium dioxide catalyst; the preparation process is simple and controllable; compared with the cerium dioxide purchased in the market, the catalyst has the advantages of good dispersing property, small particles, larger specific surface area, better oxygen storing and releasing ability, and strong antitoxin performance; the neutralization reactions between potassium permanganate and manganese nitrate are utilized, cerium dioxide is taken as the substrate to carry out redox reactions to obtain a mixture precipitate of manganese oxides and cerium dioxide, and then the mixture precipitate is subjected to a post treatment to obtain the supported manganese-based low temperature denitration catalyst. According to the preparation method, only a hydrothermal method is adopted, the related technology is simple, the cost is low, and the efficiency is high.

The invention relates to a composite binding agent applicable for a silicon-based negative electrode material of a lithium ion battery. The composite binding agent comprises a main binding agent and a matched binging agent, wherein the main binding agent is partially neutralized polyacrylic acid. With the partially neutralized polyacrylic acid proposed by the invention, the dispersibility of the composite binding agent is improved, moreover, the mechanical property and the processability of the composite binding agent are improved, and the electrochemical performance of the material is further favorably improved. The binding agent is a mixture of the main binding agent and the matched binding agent, the main binding agent is in an intermediate state of the polyacrylic acid and poly(lithium acrylate) and has performance superior to the polyacrylic acid and the poly(lithium acrylate), and the electrochemical performance of the silicon-based negative electrode material is remarkably improved; the matched agent is styrene-butadiene rubber; moreover, a few amount of lithium-containing raw material is consumed during preparation of the composite binding agent, the composite binding agent is relatively low in cost, is easy for industrialization, has certain lithium ion conductivity, and has relatively high market potential.

The invention provides a formulation to be administered as dry powder for inhalation suitable for efficacious delivery of low-dosage strength active ingredients to the low respiratory tract of patient. In particular, the invention provides a formulation comprising microparticles constituted of microparticles of a low-dosage strength active ingredient and microparticles of an excipient wherein the MMD of the microparticles is comprised between 2 and 15 micron, at least 10% of the microparticles has a mass diameter (MD) higher than 0.5 micron, and the process of preparation thereof.

The invention discloses a method for preparing a post-finished nanometer negative ion automobile internal decorative fabric, comprising the following steps that: nanometer negative ion powder is added into the de-ionized water and is stirred at a high speed; a dispersing agent of sodium polyacrylate and a silicone hydride coupling agent are added at a temperature of between 40 and 50 DEG C; the mass ratio of the de-ionized water to the nanometer negative ion powder to the dispersing agent and to the coupling agent is 100:8 to 15:3.0 to 3.5:3 to 4, the silicone hydride coupling agent is selected from vinyl silane, amino silane, meth acryloxy silane, hydrosulphonyl silane or uramido silane; the nanometer negative ion finishing agent is obtained by stirring and the ultra audible sound dispersing process; after the nanometer negative ion finishing agent is diluted, and the immersing-padding-drying technique is adopted to prepare the post-finished nanometer negative ion automobile internal decorative fabric. The nanometer negative ion plug material not only has good shakeproof stability and rub resistance, but also releases air negative ions with high concentration, thereby being suitable for the automobile internal decoration field.

The invention relates to a fiber-reinforced ceramic matrix composite and preparation method for a graphene/carbon nano-tube interface.The composite is structurally characterized in that a carbon fiber is wrapped by a carbon nano-tube, the carbon nano-tube is wrapped by graphene, and a Sic base body is arranged on the outermost layer.The deposit rate of the carbon nano-tube, the graphene and the Sic base body is regulated by regulating the solution concentration and deposition time, and the sequence and the number of layers of a 'carbon nano-tube/graphene' interface layer are designed by changing the deposition sequence and the number of deposition times.The introduced carbon nano-tube and graphene are good in dispersibility, the mass fraction is adjustable within a large scope, and the interface can be designed.An interface phase with the strength reasonable can be designed, and the effect of a fiber-reinforced body can be given to full play; secondary toughening can be conducted on the composite through CNT and the layered graphene, the pulling-out and bridging effects as well as the effect of deflecting cracks of the fiber, the CNT and the graphene can be given to full play, and mechanical properties of the composite are effectively improved.By means of the method, interface layer preparation time is short, efficiency is high, and design can be regulated.

The invention discloses a blocking thermoplastic polyurethane (TPU)/functional graphite oxide composite film and a preparation method thereof. The method comprises the following steps: firstly, preparing graphene oxide by adopting an improved hummers method, and then carrying out organic modification on the graphite oxide by using different fluorine ketone diisocyanate to obtain functional graphite oxide; finally, compositely building a film on a film coating machine by using the functional graphite oxide and TPU. By adopting the composite material film prepared by the method disclosed by the invention, the functional graphite oxide can be evenly dispersed into a TPU substrate as a good impermeable material, so that the composite film has good ability of blocking small molecule materials such as vapor, oxygen and the like, the barrier property is greatly enhanced, the mechanical property is also definitely improved, the film is good in transparency, and he blocking TPU/functional graphite oxide composite film can be widely applied to the fields such as food packaging and drug packaging encapsulation materials and the like. The blocking TPU/functional graphite oxide composite film is scientific and reasonable in preparation method, simple in process, and strong in maneuverability, and industrial production can be carried out on a large scale.