125 results about "Functionalized graphene" patented technology

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 preparation method and application of an amino-functionalized graphene quantum dot modified MXene loose nanofiltration membrane. The preparation method comprises the following steps: mixing an MXene nanosheet dispersion liquid with an aminated graphene quantum dot aqueous solution, and preparing an amino functionalized graphene quantum dot / MXene mixed dispersion liquid by adopting a self-assembly method; and filtering and depositing the obtained mixed dispersion liquid on the modified base membrane to obtain the MXene loose nanofiltration membrane. According to the preparation method disclosed by the invention, the zero-dimensional aminated graphene quantum dots are creatively embedded into the MXene nanosheets, so that the MXene loose nanofiltration membrane which is stable in structure and regular in stacking is prepared. The nanofiltration membrane has good separation performance on different dyes and inorganic salts while effectively inhibiting water swelling, is a next-generation separation membrane with high stability and high selectivity, is mild and simple in preparation process, and has a wide application prospect.

The invention discloses a self-repairing graphene-based wind driven generator blade protection film and a preparation method thereof, and relates to the technical field of wind power generation equipment protection. The protection film adopts a gradient structure of a bonding buffer layer, a self-repairing functional layer and a multifunctional protection layer; the self-repairing functional layer comprises a hybrid network formed by hydroxylated functionalized graphene and elastomer particles and bionic packaging microcapsules, inner layer capsules containing graphene quantum dot reinforced resin and a latent catalyst curing agent are packaged in the microcapsules, multiple times of repairing of the same damaged area can be achieved, and the repairing strength is high; the multifunctional protective layer endows the coating with super-hydrophobic, anti-icing and ultraviolet-resistant functions through fluorinated graphene and nano TiO2 (at) ZnO composite particles; the preparation process is mature, the comprehensive protection performance is excellent, and the coating is suitable for wind driven generator blade protection in the severe environment.

The invention discloses functionalized graphene for removing tritium from radioactive waste liquid and a preparation method and application of a graphene film, the functionalized graphene is a flaky substance formed by stacking lamellar structures, and the distance between the stacked lamellar structures is 7.5-8.7. The preparation method comprises the following steps: preparing graphene oxide powder; performing sulfonation on the graphene oxide powder to obtain sulfonated graphene aerogel; performing carboxylation on the graphene oxide powder to obtain carboxylated graphene; and mixing and stirring the sulfonated graphene aerogel and carboxylated graphene to obtain the functionalized graphene. The tritium in the tritium-containing liquid is separated by utilizing the membrane formed by the functionalized graphene, and the tritium removal technology has the advantages of mild reaction conditions, low energy consumption, easiness in large-scale production and the like.

The present invention relates to a planar heating element comprising: a heating layer including graphene flakes, functionalized graphene and a nanohybrid material; and an electrode electrically connected to the heating layer, wherein the nanohybrid material has the functionalized graphene self-adsorbed on the surfaces of thermally conductive inorganic particles.

The invention discloses an oil-soluble Mo-functionalized graphene composite material as well as a preparation method and application thereof, and belongs to the field of lubricating oil additives. The preparation method comprises the following steps: (1) mixing a Mo-functionalized graphene composite material with an organic solvent, and performing ultrasonic treatment to form a solution A; (2) adding an amine reducing agent into the solution A, carrying out reduction reaction, filtering and washing to obtain a filter cake; and (3) mixing a long-chain organic compound, a coupling agent and a surfactant, performing ultrasonic treatment to form a mixed solution B, performing ultrasonic dispersion on the filter cake into the mixed solution B, and performing heating treatment, cooling, filtering, washing and drying to obtain the oil-soluble Mo-functionalized graphene composite material. Through partial reduction and chemical grafting processes, the Mo-functionalized graphene composite material is subjected to selective reduction firstly, then a coupling agent is utilized to graft a long-chain organic compound to the surface of the composite material, and an oil-soluble group is introduced, so that the dispersion stability and the anti-wear and anti-friction performance in lubricating oil are remarkably improved.

The invention discloses a double-amino sequence functionalized graphene oxide immobilized enzyme as well as a preparation method and application thereof, and relates to the technical field of graphene oxide immobilized enzymes. The method comprises the following steps: grafting polydopamine to the surface of graphene oxide to obtain a GO-coated PDA material; reacting the GO-coated PDA material with an amino functional reagent in a first dispersion system, centrifuging, cleaning and drying to obtain a double-amino sequentially-functionalized graphene oxide material; the double-amino sequentially functionalized graphene oxide material is used for immobilizing a target enzyme; the amino functional reagent is polyethyleneimine and / or polyethanolamine. The preparation process of the double-amino sequence functionalized graphene oxide material provided by the invention is simple, and the process conditions are mild. The immobilized enzyme prepared from the material not only has better reusability, but also has better catalytic performance and stability than free enzyme when being practically used for preparing catalytic reaction products.

A graphene-based composition is disclosed comprising functionalized graphene powder produced by detonation, plasma synthesis, liquid phase exfoliation, mechanical exfoliation among other graphene production methods known in the art. The graphene powder includes oxygen-containing functional groups such as hydroxyl, epoxy, carbonyl, and carboxyl, with a carbon-to-oxygen atomic ratio ranging from approximately 1.0 to 99.0. The powder is dispersed in an organic solvent, non-organic solvent, aqueous medium, surfactant, or POSS-based medium at a solids concentration between about 2% w / v and 30% w / v. Methods of functionalizing the graphene powder and forming dispersions are provided, along with methods of making ink dispersions with polymer binders and printed or coated articles formed therefrom. The graphene formulations exhibit tunable surface chemistry, controlled defect structures as measured by Raman spectroscopy, and stable dispersion properties suitable for applications in printed electronics, conductive coatings, sensing platforms, and lightweight composites.

The application provides a preparation method of a full-solid-state lithium battery electrolyte and an integrated battery for energy storage, and belongs to the technical field of lithium ion secondary batteries, and can at least partially solve the problems of insufficient comprehensive performance of solid-state electrolyte, large solid-solid interface impedance, poor cycle stability, poor high-voltage adaptability and high safety risk of existing full-solid-state lithium batteries, and the application comprises the following steps: preparing a polydopamine functionalized graphene oxide aqueous solution, preparing a lithiated polyionic liquid ethanol aqueous solution, preparing a Co-N-C dispersion, preparing an electrolyte film based on the above-mentioned solutions, then preparing a positive electrode and a negative electrode, sequentially stacking the positive electrode, the electrolyte film and the negative electrode, realizing close adhesion of the solid-solid interface through hot pressing, performing gradient heat curing treatment after assembly, finally adopting aluminum plastic film packaging to obtain an integrated battery. The integrated battery prepared in the application can effectively reduce the interface impedance, improve the cycle stability and high-voltage adaptability, reduce the safety risk, and optimize the comprehensive performance.

The application provides a preparation method of a metal-functionalized graphene film, and belongs to the technical field of nanofluid mass transfer. The preparation method comprises the following steps: firstly, dispersing a palladium precursor and graphene oxide in an alcohol solvent, and growing palladium nanoparticles on the surface of the graphene oxide in situ through first heating to obtain a first dispersion liquid comprising graphene oxide loaded with the palladium nanoparticles; then adding deionized water and a reducing agent to the first dispersion liquid, stirring and performing second heating, so that the graphene oxide in the first dispersion liquid is reduced to reduced graphene oxide to obtain a second dispersion liquid comprising reduced graphene oxide loaded with the palladium nanoparticles; and finally, preparing a film from the second dispersion liquid to obtain the metal-functionalized graphene film. In other aspects of the application, a metal-functionalized graphene film obtained by the aforementioned preparation method and an application of the metal-functionalized graphene film in an electrically controlled ion separation device are also provided.

The invention discloses a UIO66-NH2 (at) GE-TiO2 composite photo-anode based on interface amido bond modification as well as a preparation method and application of the UIO66-NH2 (at) GE-TiO2 composite photo-anode. The preparation method comprises the following steps: firstly, enabling a titanium source precursor and carboxyl functionalized graphene to grow a GE-TiO2 photo-anode on a conductive substrate through a hydrothermal method; secondly, growing a UIO66-NH2 layer on the surface of the GE-TiO2 in situ through a secondary hydrothermal method to form a primary composite structure; and finally, carrying out condensation reaction on amino in UIO66-NH2 and carboxyl on the surface of graphene in GE-TiO2 by utilizing a condensation reagent (EDCI / HOBt) to form covalent amido bond bridging, thereby obtaining the final composite photo-anode. Strong coupling between UIO66-NH2 and GE-TiO2 is achieved by constructing a covalent amido bond interface, the amido bond serves as an efficient directional carrier transmission channel, interface charge recombination is remarkably inhibited, and therefore the photoelectrochemical water decomposition performance of the photo-anode is greatly improved. The material has a wide application prospect in the field of green hydrogen production.

The invention discloses a coal gangue-based saline-alkali soil improver, which is prepared from the following components in parts by weight: 100 to 500 parts of coal gangue, 1 to 10 parts of fulvic acid and 1 to 100 parts of graphene sol, the concentration of the graphene sol is 10 to 600 mg / L; the coal gangue mainly comprises CaCO2, SiO2 and Al2O3, and the particle size of the coal gangue is smaller than 5 mm; the pH value of the fulvic acid is 4.8, and the ash content is 0.20; the graphene sol is graphene oxide sol, the interlayer spacing of the graphene oxide is 1.0-1.8 nm, and the number of layers is less than 5; according to the invention, a three-dimensional network structure system constructed by taking functionally modified graphene as a nanostructure framework, fulvic acid as a bioactive medium and coal gangue as a porous mineral is constructed, and 1 + 1 + 1 gt is realized through a design concept of organic-inorganic-nanocarbon material trinity; 3, the volume weight, the pH value, soil organic matters and the like of the saline-alkali soil can be effectively improved through the synergistic effect.

The invention relates to the technical field of new energy, in particular to a negative pole piece, a preparation method thereof and a battery. The negative pole piece comprises a current collector and a negative active layer located on the current collector, the negative active layer comprises a negative active material, and the negative active material comprises an inner core, a buffer layer and a shell; the inner core comprises titanium dioxide; the shell covers the inner core, the shell comprises functionalized graphene, the functionalized graphene comprises graphene and a linking group, the linking group connects the graphene with the titanium dioxide, and the linking group comprises-C (O)-O-; the buffer layer is located between the titanium dioxide and the graphene, and the buffer layer comprises a polymer. According to the invention, the problems of agglomeration of graphene and interface bonding force with TiO2 can be improved, and the problem of relatively low capacity retention rate under high magnification caused by volume expansion and shrinkage of TiO2 is improved.

This invention provides a textile fabric with a TPE coating and its preparation method, comprising a base fabric coated with a TPE coating. The raw materials for preparing the TPE coating, by weight, include: 45-55 parts polyethylene, 27-33 parts ethylene-vinyl acetate copolymer, 8-12 parts elastomer, 8-12 parts hot melt adhesive, 2-5 parts reactive nanocellulose whiskers, 1-3 parts functionalized graphene oxide, and 1.0-2.2 parts processing stabilizer. The TPE coating of this invention uses polyethylene as a matrix, exhibiting excellent film-forming properties and chemical stability, good compatibility of components, flexibility and excellent elastic recovery, high adhesion and mechanical strength, and combining barrier, waterproof, and weather-resistant properties. It bonds firmly to the textile fabric, enhancing the overall performance of the textile fabric.

The invention discloses a preparation method and application of a graphene anion water-based coating. The water-based paint comprises water-based film-forming resin, a water-based curing agent, a graphene negative ion composite dispersion phase, a structure stabilizing additive, a film-forming additive and deionized water, wherein the graphene negative ion composite dispersion phase is prepared by pre-dispersing functionalized graphene and a negative ion activating solution. The negative ion activating solution enables negative ion functional components to keep good dispersion stability and activation state in a water-based system. The graphene and the negative ion activating solution are synergistically introduced into a water-based film forming system, so that stable introduction of a negative ion function can be realized on the premise that the film forming performance of the coating is not influenced. The prepared water-based paint can realize continuous negative ion release under the conditions of normal temperature and no external electric field, has good storage stability, film forming uniformity, adhesive force and water resistance, and is suitable for functional coating of the surfaces of plates, wooden products, artificial boards, building substrates and the like.

The invention belongs to the field of selective adsorbents, and particularly relates to a rubidium and cesium ion selective adsorbent based on a graphene composite material and application thereof.The rubidium and cesium ion selective adsorbent is prepared by conducting surface carboxyl activation and crown ether grafting on the surface of a three-dimensional cross-linked graphene skeleton to obtain a crown ether functionalized graphene composite material; and performing in-situ growth of copper ferrocyanide nanoclusters on the crown ether functionalized graphene composite material. The rubidium cesium ion selective adsorbent realizes efficient selective adsorption of Rb < + > and Cs < + >, reaches adsorption equilibrium within 30 min in simulated high-level liquid waste, has Cs < + > and Rb < + > saturated adsorption capacities of 185 mg / g and 142 mg / g respectively, and has excellent acid-base stability and electrochemical regeneration capacity.

The application discloses graphene nano long-acting anticorrosive paint and a preparation method thereof, and relates to the technical field of anticorrosive paint, and comprises 100 parts of epoxy resin and 1.0 parts of a functionalized graphene mixture; the functionalized graphene mixture comprises component 1, flexible interface-aminosilane functionalized graphene, and component 2, long-chain alkyl grafted hydrophobic graphene; wherein the relative weight proportion of component 2 in the functionalized graphene mixture is defined as the weight of component 2 / (the weight of component 1 + the weight of component 2), and is in the range of 0.1 to 0.4. The application realizes the synergy of double functionalized graphene, and combines gradient curing and thickness-proportion self-adaptive adjustment. The obtained coating has excellent internal stress buffering capacity, stable surface hydrophobicity and wide adaptability to different construction thicknesses, and has excellent comprehensive anticorrosive performance.

The invention belongs to the technical field of concrete repairing, and particularly relates to an interface bonding material for concrete repairing and a preparation method and application thereof. The interface bonding material for concrete repair comprises the following components in parts by mass: a component A: 5-15 parts of functionalized graphene, 8-12 parts of a humidity response polymer, 4-8 parts of a temperature response polymer, 3-5 parts of a pH response polymer, 30-35 parts of an epoxy resin matrix, 10-15 parts of modified acrylic resin, 2-3 parts of a coupling agent and 3-5 parts of a nano reinforcing agent; the component B is a modified amine curing agent; the functionalized graphene is graphene of which the surface contains at least one of carboxyl, amino and hydroxyl. The interface binding material for concrete repair is good in environment adaptability and good in binding and anti-permeability performance.

The invention discloses an electrochemical sensor working electrode and a preparation method and application thereof, and belongs to the technical field of electrochemical sensing. Firstly, organic semiconductor micromolecules (PTCK) are prepared as organic ligands, then the organic semiconductor micromolecules, chloroplatinic acid and few layers of graphene oxide are prepared into a PTCK-Pt-GO compound through a hydrothermal method, and then the graphene composite film (P-Pt-G) loaded with platinum nanoparticles is prepared on the surface of a working electrode area through in-situ electrochemical reduction. According to the functionalized graphene composite film prepared through electrochemical reduction, platinum nanoparticles are uniformly dispersed, more catalytic sites can be exposed, the detection capacity of hydrogen peroxide is improved, and the functionalized graphene composite film can be applied to preparation of a high-sensitivity hydrogen peroxide electrochemical sensor. The preparation process provided by the invention is simple, and the sensor has relatively low detection line and good detection performance.

This invention relates to the field of lithium battery packaging materials technology, and discloses a flexible packaging film for battery cells and its preparation process. The flexible packaging film comprises a protective outer layer, a first adhesive layer, an aluminum foil layer, a second adhesive layer, and a heat-sealing inner layer stacked sequentially, wherein a corrosion-resistant bonding layer is disposed between the aluminum foil layer and the second adhesive layer. The corrosion-resistant bonding layer is formed by curing and cross-linking a coating liquid containing a surface-functionalized graphene oxide-supported nano-layered zirconium phosphate composite on the surface of the aluminum foil. The heat-sealing inner layer is a multilayer co-extruded functional polypropylene film layer comprising an adhesive transition layer, a support layer, and a heat-sealing layer. By constructing a corrosion-resistant bonding layer at the aluminum foil interface and optimizing the multilayer structural design of the heat-sealing inner layer, the stability of the aluminum-plastic composite interface, the heat-sealing reliability, and the overall mechanical compatibility can be improved, thereby improving the comprehensive performance of the flexible packaging film for battery cells under high temperature, high humidity, and electrolyte contact conditions, making it suitable for the packaging of power batteries and energy storage batteries.

The present application relates to the technical field of functional composite materials, and particularly relates to a shielding and heat dissipating material containing graphene and a production method thereof, which comprises a polymer matrix, graphene dispersed in the polymer matrix and optional metal micro / nano particles, the graphene and the metal micro / nano particles are mutually overlapped in the matrix to form a three-dimensional continuous network structure. The present application builds an interconnected three-dimensional network in the material interior through the synergistic effect of functionalized graphene and metal particles, and the network can be used as a channel for fast migration of electrons to realize electromagnetic shielding and can be used as a high-speed path for phonon transmission to realize efficient heat diffusion.

The invention relates to a preparation method of graphene modified low-carbon concrete, and relates to the technical field of concrete.The preparation method comprises the steps that mixed solid waste particles are subjected to low-temperature calcination to induce surface defects, epoxy functionalized graphene is chemically grafted to the surface of solid waste through a silane coupling agent, and modified composite powder is prepared; respectively preparing compact layer slurry and porous layer slurry, injecting the slurry into a mold in a layered manner, and applying a direct-current electric field to induce directional enrichment of charged particles on an interlayer interface; and finally, variable-frequency microwave pulse in-situ curing is carried out on the formed blank, and high-frequency excitation and low-frequency relaxation are alternately carried out. The dispersity and interface bonding force of graphene are improved through a chemical anchoring network, interlayer bonding of a gradient structure is enhanced through electric field induction, internal hot cracks are prevented from being generated through a frequency conversion microwave technology, and the mechanical property and durability of the high-solid-waste-mixing-amount concrete are remarkably improved.

The invention belongs to the technical field of polymer composite materials, and discloses a high-temperature-resistant enhanced polyphenylene sulfide composite material and a preparation process thereof. The composite material comprises the following components in percentage by mass: 65%-85% of polyphenylene sulfide resin, 10%-25% of functionalized graphene aerogel, 2%-8% of a nucleating aid and 1%-3% of a heat stabilizer, a three-dimensional confinement nano reaction environment is constructed through functionalized graphene aerogel, and a through type shish-kebab crystal structure is formed in situ in combination with ultrasonic or magnetic field external field induction. According to the high-temperature-resistant enhanced polyphenylene sulfide composite material and the preparation process thereof provided by the invention, a novel high-performance composite material system with excellent comprehensive performance is successfully constructed by innovatively fusing three technical elements of nano confinement, surface functionalization and external field induction; the heat resistance, the mechanical strength and the thermal cycle size stability of the material are remarkably improved, and the material is suitable for high-end electronic and aviation parts.

The invention discloses a metal-Salen complex functionalized graphene-based composite material as well as a preparation method and application thereof, and belongs to the technical field of energy storage materials. The composite material takes graphene oxide as a substrate, a Salen type ligand skeleton is grafted through a covalent bond, and a metal active center with an M-N2O2 structure is coordinated on the Salen type ligand skeleton. The preparation method comprises the following steps: carrying out amination on graphene oxide, carrying out Schiff base condensation on graphene oxide and salicylaldehyde to form a ligand, and carrying out coordination reaction on the ligand and metal salt. The composite material disclosed by the invention is coated on a commercial diaphragm and can be used for a lithium-sulfur battery. Through atomic-scale dispersed catalytic sites, effective interception and efficient bidirectional catalytic conversion of polysulfide are synergistically realized, uniform deposition of lithium ions can be guided to inhibit dendritic crystal growth, and the key problems of shuttling of polysulfide, slow reaction kinetics, negative electrode instability and the like in a lithium-sulfur battery are solved; and the rate capability, the cycle life and the safety of the lithium-sulfur battery are remarkably improved.

This invention relates to the field of lubricant technology, specifically to a lubricant for agricultural machinery and its preparation method. This agricultural machinery lubricant, by weight, comprises the following components: 85-93 parts of a first base oil, 2.0-3.0 parts of 1,3-bis(3-phenoxyphenoxy)benzene, 0.2-0.3 parts of zinc dialkyl dithiophosphate, 0.5-1.0 parts of a graphene-based anti-wear additive, 2.0-4.0 parts of polyisobutylene succinimide, 0.5-1.5 parts of a hindered phenolic antioxidant, 1.5-3.0 parts of hydrogenated styrene-isoprene copolymer, and 0.2-0.6 parts of polymethacrylate; wherein the first base oil comprises poly(α-olefin) PAO4 and paraffin oil in a weight ratio of 2-3:1. The agricultural machinery lubricant provided by this invention improves the anti-wear and friction-reducing properties of the graphene-based anti-wear additive, and enhances the stable dispersibility of functionalized graphene in the oil phase and its interfacial properties with the oil phase.

The invention belongs to the technical field of concrete structure protection and repair, and particularly relates to a graphene-based anti-permeation interface treating agent as well as a preparation method and a construction method thereof. The graphene-based anti-permeation interface treating agent is prepared from a component A and a component B. The component A is prepared from, by mass, 30-60 parts of functionalized graphene oxide dispersion liquid, 15-25 parts of reduced graphene dispersion liquid, 30-60 parts of nano silicon dioxide, 120-200 parts of waterborne epoxy resin emulsion, 3-8 parts of a dispersing agent, 1-2 parts of a defoaming agent and deionized water. The component B is prepared from 50 to 100 parts of functionalized graphene oxide dispersion liquid, 60 to 100 parts of nano silicon dioxide, 40 to 80 parts of nano filler, 30 to 65 parts of response type polymer, 100 to 180 parts of waterborne epoxy emulsion, 4 to 10 parts of dispersing agent and deionized water. The graphene-based anti-permeation interface treating agent disclosed by the invention is good in water resistance, and is beneficial to improving the interface bonding property with concrete.

This invention discloses a high-wear-resistant lubricating oil and its preparation method, relating to the field of lubricating oil technology. The high-wear-resistant lubricating oil, by weight, comprises: 85-92 parts base oil, 3-5 parts shape memory polymer, 2-4 parts metal-based shape memory alloy, 0.05-0.1 parts functionalized graphene, 0.5-1 parts self-cleaning additive, 5-8 parts nickel-titanium-niobium magneto-controlled shape memory alloy, and 2-3 parts phase change heat storage microcapsules. This invention, by compounding the base oil with the shape memory polymer, metal-based shape memory alloy, functionalized graphene, self-cleaning additive, nickel-titanium-niobium magneto-controlled shape memory alloy, and phase change heat storage microcapsules in a specific ratio, compared with existing technologies, can improve the wear resistance life of the lubricating oil under different load and temperature conditions. Therefore, it solves the problem that traditional lubricating oils have large performance fluctuations under varying operating conditions and are difficult to meet lubrication requirements under high and low temperatures and different load conditions.

This invention discloses an aminated graphene oxide / carboxylated cellulose nanofiber composite ultrafiltration membrane based on phase inversion and its preparation method, belonging to the field of membrane separation. The casting solution of the ultrafiltration membrane has the following mass fractions: polyvinylpyrrolidone: 1 wt.%, polyethersulfone: 20 wt.%, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide: 0.05 wt.%, N-methylpyrrolidone: 78.7 wt.%, and the total mass fraction of aminated graphene oxide and carboxylated cellulose nanofibers is 0.25 wt.%; the mass ratio of aminated graphene oxide to carboxylated cellulose nanofibers is (0.5-1.5):1. This invention solves the problems of low rejection rate and severe membrane fouling caused by the mismatch between the molecular weight cutoff range and low molecular weight dyes in the prior art, and has the potential for application in wastewater treatment device preparation.

The invention belongs to the technical field of inorganic non-metal graphite sealing materials, and particularly relates to a shield pump water-lubricated bearing graphite tile material added with graphene and a preparation method of the shield pump water-lubricated bearing graphite tile material. In order to solve the problems that an existing graphite sealing ring preparation process is complex, and the performance of a wear-resistant material cannot meet more harsh use requirements, the preparation method comprises the following steps: uniformly mixing superfine coke powder, graphite powder and a functionalized graphene solution to obtain a mixture, heating the mixture, and then heating asphalt; the shielding pump water lubricated bearing graphite tile material added with the graphene is obtained by heating, mixing and kneading, crushing and grinding, three times of roasting, two times of asphalt impregnation and graphitization, the hardness and graphitization degree of a graphite matrix are improved, the strength of a graphite product is greatly improved, and the harsh use requirement for an existing graphite high-performance wear-resistant material is met.

This invention discloses a method for preparing a p-phenylenediamine-functionalized natural graphite-based graphene-like carbon antistatic epoxy self-leveling surface paint. The method includes the following steps: First, natural graphite-like graphene carbon is prepared. p-phenylenediamine is used to functionalize the surface of the graphene-like carbon, which serves as a conductive medium and dispersant. This carbon is then uniformly mixed with epoxy resin to form a p-phenylenediamine-functionalized graphene-like carbon material dispersion. Functional additives, pigments, and fillers are added, and the mixture is dispersed at high speed until homogeneous, completing component B. Then, phenolic amine epoxy curing agent component A is added, and the mixture undergoes reaction and curing to form a paint film, finally yielding the p-phenylenediamine-functionalized natural graphite-based graphene-like carbon antistatic epoxy self-leveling surface paint. The material prepared using this invention exhibits good antistatic properties and is simple to apply and inexpensive. It has broad application prospects in the coating of floors in workshops and venues requiring cleaning and antistatic properties, such as those in the pharmaceutical, electronics, instrumentation, textile, daily chemical, and food industries.