2381 results about "Graphite oxide" patented technology

The invention discloses a light telegraph pole cement material and a preparation method thereof, and relates to the technical field of cement concrete. The method comprises the following steps: firstly, carrying out acid pickling, silane coupling agent grafting and nanoparticle vacuum impregnation treatment on shale ceramsite to obtain modified light ceramsite; the preparation method comprises the following steps: ultrasonically dispersing graphene oxide, compounding with Portland cement clinker and modified fly ash, and reacting with epoxy resin emulsion, a curing agent and a silane coupling agent to prepare organic-inorganic composite modified cement; the bamboo skeleton is subjected to silane coupling agent pretreatment to obtain a modified skeleton; then, mixing composite cement, an additive and water into slurry, adding the modified ceramsite and aggregate, and performing high-speed stirring and ultrasonic dispersion to form homogeneous concrete slurry; and finally, putting the modified bamboo skeleton into a mold, injecting the slurry, and performing centrifugal forming, steam curing and natural curing to obtain the cement material. The prepared lightweight telegraph pole cement material has excellent mechanical strength.

The invention discloses an anti-aging flame-retardant polyvinyl chloride material and a preparation method thereof. The anti-aging flame-retardant polyvinyl chloride material comprises the following raw material components in parts by weight: 100 parts of PVC resin, 0.6-2.4 parts of a lubricant, 15-27 parts of a plasticizer and 14-25 parts of a composite flame-retardant anti-aging reinforcing filler, wherein the composite flame-retardant anti-aging reinforcing filler is obtained by sequentially carrying out antioxidant loading and polymer grafting modification on a compound of graphene oxide, basic magnesium sulfate whiskers and mesoporous alumina. The prepared polyvinyl chloride has excellent aging resistance, flame retardance and mechanical strength, is good in thermal stability and excellent in comprehensive performance, and has a wide market application prospect.

The invention relates to the technical field of sensors, in particular to a high-sensitivity pressure-temperature dual-mode sensor and a preparation method thereof.The preparation method comprises the steps that a carbon nano tube is subjected to acid treatment and then reacts with a silane coupling agent KH550, and an aminated carbon nano tube is prepared; the method comprises the following steps: carrying out hydrothermal reaction on a phosphorus source and a graphene oxide aqueous solution to prepare phosphorus-doped reduced graphene oxide; the preparation method comprises the following steps: synthesizing Au-Ag heterojunction nano dispersion liquid through an Au nano seed method; mixing the three components and carrying out ultrasonic treatment to obtain mixed dispersion liquid; the preparation method comprises the following steps: modifying a PDMS substrate with KH560 and polyethylene glycol diamine to prepare a modified PDMS substrate; and coating the mixed dispersion liquid on a modified substrate to form a sensitive layer, and preparing an electrode to obtain the sensor. The aminated carbon nanotubes and the phosphorus-doped reduced graphene oxide construct a three-dimensional conductive network, so that high-sensitivity pressure detection is realized; the phosphorus-doped reduced graphene oxide and the Au-Ag heterojunction form a Schottky barrier, so that stable temperature sensing is realized; and the modified PDMS and the sensitive layer are strongly combined to improve the mechanical durability.

The invention relates to the technical field of fibers, and discloses an antistatic warm-keeping fiber and a preparation method thereof. The preparation method comprises the following steps: carrying out graft modification on a far infrared material graphene oxide through functionalized POSS, introducing the modified graphene oxide and an ionic liquid into polypropylene, carrying out melt grafting to prepare an antistatic polypropylene master batch, introducing the master batch into polypropylene slices for spinning, and carrying out a synergistic antistatic effect of an inorganic antistatic agent graphene and an organic antistatic agent ionic liquid to prepare a composite material. The prepared fiber has antistatic performance and far infrared heating performance, and meanwhile, the POSS structure with excellent thermal stability is introduced, so that the heat resistance of the fiber is further improved.

The invention discloses a light-moisture dual-curing underwater epoxy coating with a self-repairing function as well as a preparation method and a construction method of the light-moisture dual-curing underwater epoxy coating. The epoxy coating comprises a component A and a component B, wherein the mass ratio of the component A to the component B is (1.5-3.5): 1; the component A is prepared from the following raw materials: bisphenol F type epoxy resin, dynamic disulfide bond modified polysulfide rubber, boron nitride nanosheet and silicon carbide nanowire hybrid filler, a photoinitiator and a silane coupling agent; the component B is prepared from the following raw materials: moisture-cured polyether amine, a boric acid ester bond cross-linking agent and hydrophobic modified graphene oxide. According to the invention, a light-moisture dual-curing mechanism is adopted, ultraviolet irradiation initiates rapid surface curing, and then environmental moisture permeates to complete deep curing. The material provided by the invention has the advantages of rapid curing, excellent self-repairing function, significantly improved underwater adhesion and good thermal conductivity, and provides a new solution for rapid repairing and long-acting protection of underwater structures.

The invention provides a waterproof and windproof warm-keeping fabric and a production process thereof, and relates to the technical field of textile fabrics, the waterproof and windproof warm-keeping fabric comprises a protective surface layer, a windproof temperature-locking middle layer and a skin-friendly warm-keeping inner layer which are sequentially arranged from outside to inside, and the three layers are compounded through a gradient hot melt adhesive; the protective surface layer is a graphene oxide modified polyester fiber fabric treated by a composite hydrophobic finishing liquid; the windproof temperature-locking middle layer sequentially comprises a non-swelling environment-friendly TPU film, a polytetrafluoroethylene microporous film and a Cs0. 33WO3 modified PA6 / 66 hollow fiber net from outside to inside, and the three are laminated and compounded into an integrated structure through hot pressing; and the skin-friendly warm-keeping inner layer is a bamboo pulp fiber-cotton-skin-friendly antibacterial polyester fiber blended fabric loaded with phase change microcapsules. The fabric disclosed by the invention integrates excellent waterproof, windproof and warm-keeping properties, is suitable for outdoor and cold-proof clothes, and has both functions and comfort.

The invention discloses a high-initial-efficiency fast-charge graphite composite material and a preparation method thereof, the composite material is of a core-shell structure, the core is graphite, and the shell is lithium sulfonate / lithium molybdate and an amorphous carbon coating layer thereof; the mass ratio of the shell is 5-15 wt% according to the mass ratio of the composite material being 100%. The preparation method comprises the following steps: adding a molybdenum compound into a solvent to prepare a solution, adding graphite oxide, an inorganic lithium salt and a carbon nanotube conductive solution, reacting for 2-12 hours at the temperature of 50-120 DEG C, filtering, carbonizing filter residues to obtain a lithium molybdate conductive agent coated graphite material, and depositing a lithium sulfonate derivative on the surface of the lithium molybdate conductive agent coated graphite material by an atomization method to obtain the lithium molybdate conductive agent coated graphite material. The electron and ion conductivity of the material can be improved, and the rate and the first efficiency of the material can be improved.

The invention relates to an adsorbent and a preparation method and application thereof, the adsorbent comprises a polymer matrix and a nanofiller uniformly embedded in the polymer matrix, the polymer matrix comprises a calcium / boron cross-linked polyvinyl alcohol-sodium alginate blend, and the nanofiller is sulfonic acid / carboxylic acid functionalized graphene oxide; the mass fraction of the nano filler in the adsorbent is 0.05%-0.60%; wrinkles and irregular hole structures are distributed on the surface of the adsorbent. The adsorbent is used for removing tritium in water and is high in adsorption capacity, stable in structure and good in recycling performance. The removal rate of tritium in the single-stage adsorption process is greater than 8.5%, and the removal rate of tritium in the third-stage adsorption process is 19.4-57.7%.

The invention discloses a staphylococcus aureus biosensor based on a nucleic acid aptamer and a preparation method of the staphylococcus aureus biosensor. Three fluorine atoms (F) are introduced into the 5'end, the 3 'end and the middle position of an aptamer 2' F3-(5 '3'm DNA) sequence (SEQ ID NO: 1) for modification, so that the binding force of the aptamer and graphene is remarkably enhanced, the signal stability and the anti-interference capability of the biosensor are remarkably improved, non-specific fluorescence leakage can be effectively blocked, and reliable guarantee is provided for complex sample detection. According to the present invention, with the cooperation of the graphene oxide quenching substrate, the high-sensitivity detection of the staphylococcus aureus is achieved, the detection limit of the sensor within 5 min can achieve 5 cells / mL, the sensitivity is high, the specificity on the complex sample is more than 95.4%, and the sensor is suitable for the food safety rapid screening and the clinical diagnosis.

The invention belongs to the technical field of building materials, and particularly relates to a micro-expansion anti-cracking waterproof composite deep groove filler and a preparation method thereof. The micro-bulking anti-cracking waterproof composite deep groove filler provided by the invention comprises cement, gypsum, mineral powder, nano silicon oxide, coarse aggregate, fine aggregate, modified fibers, an expanding agent, a polycarboxylate superplasticizer and water. According to the invention, polyacrylamide, calcium sulphoaluminate and magnesium oxide are adopted to jointly form an expanding agent, and early-stage-late-stage full-period shrinkage compensation is jointly formed in a concrete hydration process, so that the density of the concrete is effectively improved, and the waterproof performance of the concrete is further improved; according to the invention, sodium dodecyl benzene sulfonate and propylene glycol block polyether are adopted to carry out compound modification on graphene oxide, and gamma-aminopropyltriethoxysilane is connected to the surface of basalt fiber, so that the bonding strength of basalt fiber and a cement matrix and the compactness of the cement matrix are improved, and the waterproof and anti-cracking properties of concrete are further improved.

The invention belongs to the technical field of conductive polymer materials, and particularly relates to a three-dimensional polypyrrole conductive material and a preparation method and application thereof. The preparation method of the three-dimensional polypyrrole conductive material comprises the following steps: (1) preparing a metal copper quantum dot and graphene oxide mixed dispersion liquid; (2) adding an oxidizing agent to obtain a reaction solution; (3) adding a pyrrole monomer, and carrying out a polymerization reaction to obtain a graphene oxide / polypyrrole composite dispersion liquid; and (4) adding a reducing agent to reduce the graphene oxide to obtain the three-dimensional polypyrrole conductive material. After the metal copper quantum dots are loaded on the graphene oxide sheet layer, the graphene oxide sheet layer becomes a structure-oriented core in subsequent polymerization, and finally the stable three-dimensional conductive composite material with graphene as a framework and polypyrrole nanosheets as connection points is formed. Compared with a traditional three-dimensional material formed by overlapping and integrating a two-dimensional graphene sheet layer and a conductive nanowire / nanorod, the three-dimensional material with the structure can form an efficient conductive path more easily under the condition of low filler content.

The invention relates to a pour point depressing paraffin inhibitor and a preparation method thereof. The pour point depressing paraffin inhibitor is prepared from the following raw material components: graphene oxide, acrylic acid, a dispersing agent, a catalyst and a solvent, wherein the content of the graphene oxide is 4%-14.5% by mass, the content of the acrylic acid is 38%-76% by mass, the content of the dispersing agent is 4%-6% by mass, and the content of the catalyst is 1%-2% by mass. The graphene oxide is introduced into the pour-point depressing paraffin inhibitor provided by the invention, the size nanocrystallization is easy to prevent the formation of wax crystals in crude oil, the pour-point depressing effect is good, and the crude oil is conveniently exploited from a shaft and transported by a crude oil pipeline.

The invention discloses an intelligent modified atmosphere packaging film with gas selectivity and pH / humidity double response as well as a preparation method and application of the intelligent modified atmosphere packaging film. The preparation method comprises the following steps: mixing thymol emulsion and graphene oxide dispersion liquid, and stirring and reacting at room temperature in a dark place to prepare graphene oxide-thymol; the preparation method comprises the following steps: dissolving chitosan in an acetic acid aqueous solution, then adding graphene oxide-thymol and a plasticizer, and carrying out ultrasonic dispersion treatment to form a film-forming solution; and carrying out film forming treatment on the film forming solution by adopting a casting method to prepare the intelligent modified atmosphere packaging film with gas selectivity and pH / humidity double response. The prepared intelligent modified atmosphere packaging film can be modified automatically, is uniform and stable in structure, high in encapsulation efficiency, close in coordination, good in antibacterial and antioxidant activity and excellent in mechanical property and gas barrier property, can realize selective adsorption of gas, controls release of thymol by responding to changes of the pH value and humidity in the environment, and has a good application prospect. The method has a good application prospect in the field of fruit and vegetable preservation.

The present invention provides a high-thermal-conductivity and high-thickness graphene composite film and a preparation method therefor. The graphene composite film has a thickness of 1-2 mm, a thermal conductivity in the horizontal direction of 1500-1800 W / m•K and a thermal conductivity in the vertical direction of 100-200 W / m•K. The graphene composite film is obtained by mixing, coating, drying and sintering raw materials comprising a graphene oxide slurry, carbon fibers, carbon nanotubes and an adhesive dispersant, wherein on the basis of the mass of the graphene oxide slurry, the mass percentage of the carbon fibers is 4-7%, the mass percentage of the carbon nanotubes is 5-10%, and the mass percentage of the adhesive dispersant is 5-10%. The graphene composite film uses graphene oxide as a base material, and carbon fibers and carbon nanotubes of a certain length and diameter are added thereto to create a thermal conduction channel in the vertical direction. The synergistic combination of the three raw materials solves the current defect of it being difficult to balance the thickness and axial thermal conduction performance of a graphene film.

A preparation method of porous hafnium carbide superhigh-temperature ceramic is characterized by comprising the following steps: dispersing graphene oxide in a solvent to form a graphene oxide dispersion liquid, mixing a monomer hafnium source solution with the graphene oxide dispersion liquid, and carrying out hydrothermal treatment on a hafnium oxide carbon precursor network structure to obtain the porous hafnium carbide superhigh-temperature ceramic. The organic-inorganic hybrid precursor is subjected to two-stage heat treatment, the first stage is inorganic treatment, the second stage is carbon thermal reduction reaction, and the porous hafnium carbide ultrahigh-temperature ceramic material is obtained. Graphene oxide is used as a structure-directing agent and an in-situ carbon source, a monomer hafnium source is uniformly anchored on the surface of a GO sheet layer on the molecular scale, an organic-inorganic hybrid precursor is formed, after the precursor is subjected to hydrothermal crosslinking, Hf species and a carbon skeleton are highly mixed on the nanoscale, and the Hf / GO composite material is obtained. And the subsequent carbon thermal reduction reaction can be efficiently completed in a low-temperature interval of 1300-1450 DEG C.

The invention discloses a sodium ion battery hard carbon negative electrode material and a preparation method and application thereof, the preparation method comprises the following steps: S1, treating coconut shell carbon precursor powder with an alkaline solution to remove impurities to obtain a precursor A; s2, mixing graphene oxide with deionized water to prepare a graphene oxide solution; s3, adding the precursor A into a graphene oxide solution, mixing, and drying to obtain a precursor B; s4, transferring the precursor B into a tubular furnace, heating to 400-600 DEG C at a heating rate of 1-5 DEG C / min, and keeping the temperature for 1-3 hours; after heat preservation is finished, the temperature is increased to 1200-1500 DEG C at the heating rate of 1-5 DEG C / min, heat preservation is conducted for 2 h, and then natural cooling is conducted; inert gas is introduced as shielding gas in the whole reaction process. A closed-pore structure is formed on the surface of the carbon negative electrode hard carbon material prepared by the preparation method, so that the electrochemical performance of the hard carbon material is improved, and the carbon negative electrode hard carbon material can be used as a base material to prepare a sodium-ion battery with high electrochemical performance.

The invention relates to the technical field of ceramic glaze water, in particular to ceramic glaze water capable of continuously releasing negative ions based on a rare earth material and a preparation method of the ceramic glaze water. Comprising a negative ion material, sodium polystyrenesulfonate, an immobilized bacterium preparation, carbon nanotube modified graphene oxide, turbo stone, modified sepiolite, nano-zinc oxide, sodium hexametasilicate, polyethylene glycol, a composite antioxidant, a coalescing agent, a slow-release carrier and deionized water. The negative ion material is formed by mixing low-radioactivity commercial rare earth powder, tourmaline and opal according to the mass ratio of (3-4): (4-5): 1. According to the invention, the preparation cost of the glaze water is reduced and the production efficiency is improved by optimizing the composition and compounding mode of the negative ion material, enhancing the stability of the bacterial preparation and simplifying the preparation process, meanwhile, the negative ion release durability, the ceramic surface adhesive force and the antibacterial property are remarkably enhanced, and the requirements of industrial production and practical application are met.

The invention discloses high-strength durable pervious concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from the following raw materials in parts by weight: 160 to 220 parts of cement, 1200 to 1600 parts of coarse aggregate, 170 to 230 parts of fine sand, 160 to 200 parts of water, 3 to 4.5 parts of polycarboxylate superplasticizer, 5 to 15 parts of silica fume, 1 to 3 parts of polypropylene fiber, 8 to 12 parts of modified nano cellulose and 5 to 7 parts of flexibilizer, wherein the flexibilizer comprises modified graphene oxide, propylene glycol monomethyl ether and polyisoprene rubber. The interface compatibility is enhanced through the modified nanocellulose, microcracks are reduced, the bonding strength of aggregate and cement is improved, and the compressive strength is improved; the toughening agent component endows the concrete with toughness and durability, the toughening agent component and the toughening agent component have a synergistic effect, and the concrete prepared by mixing the various raw materials has excellent mechanical properties and durability on the basis of good water permeability, and has a wide market application prospect.

The invention discloses a graphene oxide-chitosan-carboxymethyl cellulose composite aerogel and an application of the graphene oxide-chitosan-carboxymethyl cellulose composite aerogel in adsorption of amaranth. The preparation method comprises the following steps: mixing a carboxymethyl cellulose aqueous solution with a chitosan acetic acid solution, adding gallic acid, stirring until the gallic acid is completely dissolved, adding the graphene oxide dispersion liquid, and stirring until a system forms uniform and stable gel; the gel is firstly subjected to ultralow-temperature freezing and then subjected to freeze drying, and finally the graphene oxide-chitosan-carboxymethyl cellulose composite aerogel is obtained. The aerogel prepared by the method is environment-friendly and stable in pore structure, and is a composite aerogel material with high adsorption capacity and good regeneration performance on anionic dyes. The adsorption capacity of the aerogel to amaranth can reach 125 mg / g, the adsorption rate is still kept at 77% after the aerogel is recycled for 3 times, and the aerogel is suitable for efficient treatment of dye wastewater.

The invention discloses a protective adhesive film for sealing and testing a semiconductor and a preparation method of the protective adhesive film, and relates to the technical field of adhesives. The protective adhesive film is obtained by taking a modified acrylate monomer as a main body, taking a synthetic product of 2-hydroxypyridine and methacryloyl chloride as a modifier, taking trimethylolpropane triacrylate as a cross-linking agent and adding maleic anhydride modified modified chitosan and modified polyimide in a polymerization film forming process. The modified acrylate monomer is obtained by taking graphene oxide modified by vinyl trimethoxy silane and hollow glass beads modified by methacryloxy propyl trimethoxy silane as heat conducting fillers; the modified polyimide is obtained by adding a boron nitride nanosheet modified and acidified by amino acrylic acid as a heat-conducting reinforcing filler into a polyimide prepolymer and then carrying out imidization. The mechanical property, heat conduction efficiency and low-temperature brittleness of the protective adhesive film can be improved.

The application discloses a kind of high-performance coiled material powder coating and preparation method thereof, belong to powder coating technical field, the application is by the compounding of organosilicon modified epoxy resin and carboxyl-terminated polyester resin, after organosilicon modification, the segment of introduction-Si-O-Si in system has high flexibility, and synergistic effect with nano calcium carbonate, it is helpful to balance the adhesion and flexibility of coating, grafting modification graphene oxide, active chromium oxide is added again, can obviously improve the mechanical strength of coating;After then, phosphite group is grafted onto graphene oxide, and is applied in the present powder coating system, can form three-dimensional network structure in system, chemical bond effect, not only can improve its crosslinking stability in system, and the sheet structure of graphene oxide, also can play certain barrier property, can also give coating longer weather resistance, and active chromium oxide synergistic effect is further improved, and the weather resistance and corrosion resistance of coating.

The invention discloses an ultra-high molecular weight polyethylene fiber waterproof membrane and a preparation method thereof, and belongs to the technical field of high polymer materials. Comprising the following steps: mixing ultra-high molecular weight polyethylene, modified master batch, an antioxidant, a lubricant, a light stabilizer, an ultraviolet light absorber, a coloring agent and a compatilizer, uniformly mixing, extruding and granulating by a twin-screw extruder to obtain mixture particles, dissolving the mixture particles in a solvent, and carrying out extrusion granulation by a twin-screw extruder to obtain the ultra-high molecular weight polyethylene composite material. The ultra-high molecular weight polyethylene fiber waterproof membrane is obtained after spinning and membrane spinning. Ammoniated cellulose nanocrystals and ammonium fluozirconate are grafted through an acid cross-linking agent and then serve as metal coordination nodes of the zirconium-based metal organic framework material, a Na-montmorillonite / graphene oxide / zirconium-based MOF material is prepared, the Na-montmorillonite / graphene oxide / zirconium-based MOF material is blended with polyethylene resin to prepare a modified master batch, the entanglement degree of an ultra-high molecular weight polyethylene molecular chain is reduced, the processability is improved, and the service life of the material is prolonged. Meanwhile, the wear resistance and the antibacterial property of the ultra-high molecular weight polyethylene film are improved.

The invention discloses a preparation method of a manganese-doped iron-based sulfide / nitrogen-doped reduced graphene oxide composite electrode material for a sodium-ion battery, a simple solvothermal method is combined with annealing treatment, and iron atoms in a hexagonal system are replaced by part of manganese atoms in a hydrothermal process to form multivalent iron-based sulfide, so that the composite electrode material is prepared. The manganese-doped iron-based sulfide / nitrogen-doped reduced graphene oxide composite electrode material for the sodium-ion battery is successfully prepared by uniformly compounding the manganese-doped iron-based sulfide and the nitrogen-doped reduced graphene oxide, and the manganese-doped iron-based sulfide / nitrogen-doped reduced graphene oxide composite electrode material can effectively regulate and control the electronic state density, reduce the sodium ion migration energy barrier and promote the electron / ion transmission; meanwhile, continuous growth of iron-based sulfide particles is limited, so that the iron-based sulfide particles are uniformly dispersed on the surface of the graphene, more active sites are exposed, the electrochemical reaction activity is improved, and the structural stability is enhanced. The composite electrode material disclosed by the invention can be widely applied to a negative plate for a sodium-ion battery, and has excellent adaptability and application prospect in a wide temperature range and under a high-current working condition.

The invention relates to the technical field of coatings, in particular to a graphene modified epoxy anticorrosive coating and a preparation method thereof. The coating is prepared from epoxy resin, graphene-hyperbranched epoxy resin, a reactive diluent and an auxiliary agent, wherein the graphene-hyperbranched epoxy resin is prepared by a three-step method comprising the following steps: firstly, performing dual modification on graphene oxide by adopting 11-aminoundecyltriethoxysilane and 3-aminopropyltriethoxysilane; then reacting with 2-formyl-5-phenylphenol, and finally carrying out condensation polymerization with trimethylolpropane triglycidyl ether to form a hyperbranched structure. According to the invention, collaborative optimization of mechanical strength and corrosion resistance is realized, and the coating has excellent adhesive force, hardness and long-acting corrosion resistance, and is suitable for severe corrosion environments such as ocean engineering and the like.

The invention provides a surface modified carbon negative electrode material, a preparation method thereof and a battery. The preparation method comprises the following steps: mixing a graphite carbon source and a pore-forming agent, and graphitizing the obtained mixture to form porous graphite; performing oxidation treatment on the porous graphite to prepare porous graphite oxide particles; the porous graphite oxide particles are placed in a tin source solution containing tin cations, the tin source solution is attached to the surfaces of holes of the porous graphite oxide particles, and tin oxide attached to the surfaces of the holes of the porous graphite oxide particles is formed based on the tin source solution; and the porous graphite oxide particles are placed in a carbon-containing reducing gas environment to be subjected to calcination treatment, and the carbon-coated tin nanowires are prepared on the basis of the tin oxide. According to the preparation method, the surface and holes of the carbon negative electrode material are modified by adopting the carbon-coated tin nanowires, so that the discharge performance of the battery at relatively high rate can be effectively improved.

The invention provides a modified high-temperature-resistant heat-insulating anticorrosive coating and a preparation method thereof. The modified high-temperature-resistant heat-insulating anticorrosive paint comprises a component A and a component B, the component A comprises organic silicon resin, epoxy resin, a polyaniline-nano metal oxide-graphene oxide composite material, hollow glass beads and hexagonal boron nitride; the component B comprises an organic silicon modified amine curing agent, an anhydride curing agent, a titanate catalyst and an accelerant. The modified high-temperature-resistant heat-insulating anticorrosive paint has excellent corrosion resistance, high-temperature-resistant heat-insulating performance and high-temperature cracking resistance, and also has the advantages of strong adhesive force and short surface drying time. The modified high-temperature-resistant heat-insulating anticorrosive paint provided by the invention is suitable for corrosion protection of metal components exposed in high-temperature and complex corrosive environments for a long time.

The application discloses a preparation method of graphene aerogel and application thereof, and the graphene aerogel is prepared from a three-dimensional network of graphene oxide as a continuous matrix, hydrophilic polyimide fibers as a reinforcing framework, and metal-organic coordination bonds as functional nodes by coordinating cobalt ions with ethylenediamine tetramethylene phosphonic acid, and is prepared through a hydrothermal reaction, freeze drying and high-temperature annealing; the preparation method is simple, the process is easy to control, the electromagnetic shielding performance of the prepared graphene aerogel reaches 48 dB, and the graphene aerogel has good mechanical stability in the range of-75 to 150 DEG C; under a pressure of 1 kg, the compression time and recovery time of the graphene aerogel are 30 ms and 27 ms respectively, and the graphene aerogel meets the commercial standards of sensing materials and shielding materials.

The invention provides a graphene oxide and aramid nanofiber hybrid modified chopped fiber reinforced flexible polymer thermal protection material as well as a preparation method and application thereof, and belongs to the field of advanced materials. Aiming at the problems of huge modulus difference, poor interface compatibility and serious stress concentration between fibers and a flexible matrix, a hybrid interface phase composed of graphene oxide and aramid nanofibers is constructed, so that an inert surface microstructure of the chopped fibers is improved, and a multi-scale mechanical interlocking structure is promoted to be formed between the fibers and the flexible matrix; the modulus mismatch between the fiber and a rubber matrix is effectively relieved, and more uniform and efficient stress transfer of an interface area is realized. In the processes of tensile deformation, dynamic loading, high-temperature ablation and the like, the hybrid interface phase can keep tight interface combination between the fibers and the flexible matrix, the ablation anti-scouring performance and mechanical performance of the flexible composite material are remarkably improved, especially the flexible ablation performance in the high-dynamic and deformation state, and the flexible composite material has good application prospects.

The present invention relates to a method for manufacturing a barrier-coated substrate web, coated with a layer of reduced graphene oxide. The invention further relates to laminated packaging materials comprising the barrier-coated substrate web, in particular intended for liquid carton food packaging, and to liquid carton packaging containers comprising the laminated packaging material.

The invention provides a preparation method of a graphene carbon nanofiber film for oil-water separation, and relates to the field of oil-water separation membranes, and the preparation method comprises the following steps: mixing polyacrylonitrile powder and an N, N-dimethylformamide solution to obtain an electrostatic spinning solution; spinning through an electrostatic spinning machine to obtain a polyacrylonitrile fiber membrane; coating the polyacrylonitrile fiber film with the prefabricated graphene oxide dispersion liquid to obtain a graphene oxide / polyacrylonitrile composite film; carrying out pre-oxidation, activation and carbonization treatment on the composite film to obtain a graphene carbon nanofiber film; according to the method, the waste isostatic pressing graphite which is low in price and easy to obtain is adopted as the raw material, the ammonia activation means is combined, improvement is carried out on the basis of a Hummers method, graphene oxide is prepared, resource recycling is achieved, the isostatic pressing graphite waste generated in the production process is recycled and processed into a product with a high additional value, and therefore the purposes of reducing the production cost and saving resources are achieved.