52results about How to "Fully infiltrated" patented technology

The application belongs to the technical field of sand consolidation agent preparation, and particularly relates to a sand consolidation agent and a preparation method thereof. The sand consolidation agent is composed of component A and component B. The component A is composed of the following raw materials: a diphenyl phenolic epoxy resin, hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene, modified nano calcium zirconate, cage octakis(aminophenyl)silsesquioxane, n-butyl glycidyl ether, KH-550 silane coupling agent, polyether amine, fumed silica and defoaming agent. The component B is composed of the following raw materials: polyborosilazane and 2-ethyl-4-methyl imidazole. The cage octakis(aminophenyl)silsesquioxane in the raw material of the sand consolidation agent strengthens the network structure stability through chemical bonding, the hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene realizes thermal stabilization through chemical bonding and physical dispersion, and the modified nano calcium zirconate provides physical support. The three components synergistically improve the heat resistance of the system.

The present application relates to a kind of based on carbonized wood natural structure dopamine electrochemical sensor and its preparation method and application, the working electrode of the electrochemical sensor is modified with carbonized wood-ZnO nanowire-ZIF-8.The electrochemical sensor of the present application uses carbonized wood as substrate, after cutting carbonized wood whole piece, using conductive carbon paste is pasted on working electrode, while ensuring conductivity, also retain the three-dimensional structure of nanomaterial not be destroyed, guarantee the performance of sensor, with good application prospect.

This utility model discloses a wire EDM machine with coolant bundling function, including a base, a worktable on the base, an EDM body on the worktable, a wire feeding beam on the EDM body, a bundling tube at one end of the wire feeding beam above the worktable, the bundling tube being sleeved over a molybdenum wire, a coolant outlet mechanism above the bundling tube, and a wire feeding mechanism on the wire feeding beam; by sleeved over the molybdenum wire with a bundling tube and a guide groove inside the bundling tube, the coolant flows along the direction of the guide groove. When discharged from the main body of the bundling tube, the coolant is constrained around the molybdenum wire, reducing the outward dispersion of coolant, ensuring that the molybdenum wire is fully wetted by coolant during operation, achieving better cooling and reducing the occurrence of overheating and breakage of the molybdenum wire.

The utility model discloses a kind of composite photovoltaic frame pultrusion production lines, including the glass fiber yarn frame, pultrusion mould, traction machine and cutting machine arranged in sequence;Felt frame and dehumidification integrated device are provided between the glass fiber yarn frame and pultrusion mould, felt frame and dehumidification integrated device include dehumidifier and felt frame, and the top and bottom of dehumidifier are respectively provided with felt frame;Production line further includes glass fiber yarn tension adjusting device, which is arranged close to pultrusion mould.Dehumidifier and felt frame are integrated design, compact structure, small floor area, and glass fiber yarn tension adjusting device is close to pultrusion mould, and the adjustment effect of yarn tension is more direct.

The invention belongs to the field of batteries, and particularly relates to a liquid supplementing and replacing component and a lithium ion battery. In the working process of the lithium ion battery, the electrolyte can be injected into the lithium ion battery through the electrolyte supplementing and replacing component under the condition of electrolyte shortage. The liquid supplementing and replacing component comprises a liquid supplementing and replacing component main body and a plugging piece; the liquid supplementing and replacing component main body is used for being fixed on a lithium ion battery shell, and a first channel communicated with an inner cavity of the shell is formed in the liquid supplementing and replacing component main body; the plugging piece comprises a rubber ring and a sealing plate; the rubber ring is coaxially fixed in the first channel, and the sealing plate is fixed to the first end face of the rubber ring in a hot melting mode and blocks the first channel. When the liquid needs to be supplemented and replaced, a hole is formed in the sealing plate by a tool, and the liquid is supplemented and replaced through the first channel, so that the performance of the lithium ion battery is improved; after the liquid supplementing and replacing operation is completed, the hole opening position is blocked in a hot melting mode, operation is easy and convenient, and the liquid supplementing and replacing operation can be executed repeatedly.

The application provides a pore-forming agent for lithium ion batteries and a preparation method thereof, which comprises a wall material preparation step, a core material preparation step, a W / O type initial milk preparation step and a pore-forming agent for lithium ion batteries preparation step. The pore-forming agent preparation method is a new pore-forming agent synthesis route, which has the advantages of simple reaction steps, mild reaction conditions, high yield, low cost and environmental protection. The technology can accurately construct a uniform multi-level pore network by introducing the pore-forming agent into the electrode, significantly reduces the charge transmission impedance, effectively improves the fast charging capacity and high-rate discharge performance of the battery, greatly improves the electrode-electrolyte interface contact, and ensures the full use of the active material. The application also provides an application of the pore-forming agent for lithium ion batteries to lithium ion batteries. The application of the pore-forming agent for lithium ion batteries to the lithium ion batteries can improve ion conduction and improve the rate performance.

The utility model discloses a liquid injection device, and relates to the technical field of battery production. The liquid injection device is used for injecting liquid into the battery cell and comprises a liquid storage cup, a liquid injection piece and an atomization mechanism; the liquid storage cup is used for supplying electrolyte; the liquid injection part is at least partially inserted into the battery cell; the atomizing mechanism is arranged between the liquid storage cup and the liquid injection part, and the atomizing mechanism is used for atomizing the electrolyte flowing through the atomizing mechanism, so that the atomized electrolyte is injected into the battery cell through the liquid injection part. Therefore, after the electrolyte is atomized by the atomizing mechanism, the electrolyte injected into the battery cell is in a tiny liquid drop shape, so that the interior of the battery cell can be fully infiltrated in the liquid injection stage; compared with the prior art, high-temperature standing is not needed, the total time of liquid injection is saved, the liquid injection efficiency is improved, and the infiltration effect of the electrolyte is also improved.

This application provides an atomizing component, an atomizer, and an atomizing device, belonging to the technical field of atomizing devices. The atomizing component includes an atomizing core, a first liquid guiding element, and an atomizing cover. The atomizing core has a liquid inlet hole. The first liquid guiding element is sleeved outside the atomizing core, and the atomizing cover is sleeved outside the first liquid guiding element. The atomizing cover includes a first section and a second section. The first section is directly opposite the liquid inlet hole and has a central liquid guiding hole. The second section is near the end of the atomizing cover and has a bottom liquid guiding hole. Because the first section and the second section of the atomizing cover have a central liquid guiding hole and a bottom liquid guiding hole, respectively, the aerosol matrix can penetrate into the first liquid guiding element through the bottom liquid guiding hole and the central liquid guiding hole, and then penetrate into the atomizing core. In addition, compared to making the central liquid guiding hole and the bottom liquid guiding hole connected, the area of ​​the liquid guiding holes on the atomizing cover can be reduced, and the amount of liquid entering the atomizing core is stable when the amount of aerosol matrix in the atomizer is small.

The utility model discloses a disposable visual laryngoscope capable of preventing fog and realizing surface anesthesia, which comprises a visual display screen, a laryngoscope handle, a laryngoscope lens and an injector, the visual display screen is arranged at one end of the laryngoscope handle, the laryngoscope lens is arranged at the other end of the laryngoscope handle, a camera is arranged at the front end of the laryngoscope lens, and the camera is connected with the visual display screen through a cable. The injector is detachably arranged on the laryngoscope handle and connected with one end of the spray pipe, the other end of the spray pipe extends into the laryngoscope blade from the rear end of the laryngoscope blade and extends out of the front end of the laryngoscope blade, the atomization nozzle is arranged at the front end of the spray pipe and supported and fixed through an adjusting support arranged in the laryngoscope blade, and the fixing plate is arranged on the side wall of the laryngoscope handle. A positioning plate is arranged at one end of the fixing plate, a positioning hole is formed in the positioning plate, and the positioning plate is fixedly connected with a laryngoscope handle through a positioning screw arranged in the positioning hole. The laryngoscope can effectively infiltrate local anesthesia medicine on the throat, and the visual laryngoscope cannot fog when entering the oropharynx.

This invention provides an automated window film applicator for packaging boxes, belonging to the technical field of window film applicators for packaging boxes. It includes a conveyor belt, a transfer table on one side of the conveyor belt, and a feeding mechanism, an adhesive applicator, and a window film applicator assembly sequentially arranged along the feeding direction on the top of the conveyor belt. The window film applicator assembly includes a longitudinal linear module mounted on the top of the transfer table. A mounting plate is fixedly connected to the moving end of the longitudinal linear module, and two film applicators are arranged on one side of the mounting plate. This invention designs the film applicators as a structure with a sliding fit between a negative pressure box and a floating box. The bottom of the floating box is connected to a flexible suction plate with distributed micropores. An indentation on the bottom plate of the floating box forms a negative pressure distribution cavity with the negative pressure holes. This design ensures that the negative pressure is evenly distributed across the entire surface of the film, avoiding localized stress concentration caused by point suction cups, reducing problems such as depressions, bulges, and bubbles during film adsorption, and ensuring the flatness and adhesion of the window area.

The application relates to a secondary battery and a power consumption device, and belongs to the technical field of batteries. The secondary battery comprises a positive pole piece and a negative pole piece, the positive pole piece comprises a positive pole current collector and a positive pole active layer arranged on the surface of the positive pole current collector, the positive pole active layer comprises a positive pole active material; the negative pole piece comprises a negative pole current collector and a negative pole active layer arranged on the surface of the negative pole current collector, the negative pole active layer comprises a negative pole active material; and the secondary battery satisfies 0.14<=Z<=4.67; wherein Z=(n1 / n2)*(p1 / p2). The secondary battery can maintain high energy density, and has good fast charging performance and long cycle life.

The invention relates to the technical field of battery production, in particular to a battery monomer, a battery device, electric equipment and a preparation method of the battery monomer. The battery monomer comprises an electrode assembly, the electrode assembly comprises a diaphragm, the diaphragm has a width direction and a thickness direction, the diaphragm comprises a base membrane and a coating, the coating is located on the surface of at least one side of the base membrane in the thickness direction, and a liquid storage groove and a drainage channel are formed in the surface, away from the base membrane, of the coating; at least one end of the drainage channel extends to the edge of the coating in the width direction, and a liquid storage groove communicated with the drainage channel is formed in the drainage channel. According to the embodiment of the invention, the electrolyte entering the drainage channel from the edge of the diaphragm can be continuously supplemented to the liquid storage tank and flows along the drainage channel to fully infiltrate the pole piece, so that the infiltration effect of the electrolyte on the pole piece is improved.

This utility model discloses a soaking and cleaning device for traditional Chinese medicine with a conveying function, including a soaking tank and a pressing part. The soaking tank has a conveyor belt installed inside, and a spray pipe is installed on the top of the soaking tank. The pressing part is located on the top of the soaking tank and has a support frame fixedly installed on the top of the soaking tank. A drive rod is horizontally rotatably installed inside the support frame, and several lifting frames are vertically installed inside the support frame. The drive rod passes through the lifting frames horizontally and is slidably connected to them. A motor is fixedly installed on the side of the support frame, and the output end of the motor is connected to the drive rod. The motor drives the drive rod to rotate, thereby causing the lifting frames to periodically slide up and down. By providing a pressing part, this utility model can control the up and down movement of the lifting frames by rotating the drive rod driven by the motor, so that the traditional Chinese medicine floating on the water surface can be pressed down to the surface, allowing water to fully penetrate into the medicine.

The invention relates to a preparation method of a composite material embedded optical fiber leading-out end protection structure. The preparation method comprises the following steps: covering a laid optical fiber and one end of an inner-layer protection tube with an upper-layer prepreg and a lower-layer prepreg; and then a thermoplastic pipe is sleeved outside the inner-layer protection pipe, so that the thermoplastic pipe at least wraps the part of the inner-layer protection pipe, which is not covered by the prepreg. The aramid fiber pipe has the advantages that the aramid fiber pipe has high toughness, high impact resistance and good compatibility with a composite material, the part, embedded in the plate, of the aramid fiber pipe can form tough combination with a resin body, point stress at an outlet is dispersed into surface stress, and stress concentration is effectively relieved.

The invention belongs to the technical field of batteries, and particularly relates to a battery cell and a formation method thereof, an energy storage device and a power utilization device. The battery cell formation method comprises the following steps: executing multi-stage charging formation operation at a preset temperature: charging a to-be-charged battery cell with a first charging current until the to-be-charged battery cell increases a first charge state; charging with the second charging current to the Nth charging current in sequence until the state of charge reaches the target state of charge; the first charging current to the Nth charging current are gradually increased in sequence, and at least one of the second charging current to the Nth charging current is not less than 0.5 C. The formation time of the battery is obviously shortened, the production efficiency is improved, and the manufacturing cost is reduced; meanwhile, through the stepped current design and the temperature and pressure synergistic effect, the technical problems that electrolyte infiltration in a large-size battery cell is uneven and gas is difficult to discharge can be effectively solved, a more uniform and compact SEI film is formed, the consistency of the battery cell is improved, the cycle life of the battery cell is prolonged, and the safety performance of the battery cell is improved.

The application relates to the field of secondary batteries, in particular to a kind of antimony negative material and its preparation method, lithium ion battery and terminal, organic ligand containing carboxyl and mercapto, antimony source and polyethylene glycol are mixed to obtain solution A; Sodium borohydride and selenium source are added into ethanol, and then polyethyleneimine is added to obtain solution B; Solution A and solution B are mixed to carry out solvothermal reaction; The solvothermal reaction product is collected, washed and dried, and the lithium ion battery assembled by the antimony-based negative material of the application shows excellent electrochemical performance and can be used in various terminals.

The invention relates to the technical field of composite material magnesium alloy pipe component forming and manufacturing, in particular to a thermoplastic carbon fiber reinforced magnesium alloy composite pipe differential temperature air pressure regulation and in-situ reinforcement integrated forming method which comprises the steps that a magnesium alloy pipe blank is subjected to heat treatment; magnesium alloy pipe blank surface treatment; assembling a magnesium alloy composite pipe prefabricated body; a differential temperature field is constructed for the magnesium alloy composite pipe, so that the thermoplastic resin in the magnesium alloy composite pipe enters a viscous flow state while the magnesium alloy keeps good plasticity; then air pressure and axial feeding cooperative loading is carried out, and precise forming of the mold is achieved; the magnesium alloy composite pipe component is subjected to differential temperature cooling, thermoplastic resin is promoted to be fully infiltrated by means of radial shrinkage compressive stress generated at the interface by means of thermal expansion difference caused by inner and outer layer temperature difference, and in-situ enhancement of the interface of the magnesium alloy composite pipe is achieved; the requirements of high-end equipment for high-performance and high-efficiency preparation of the magnesium alloy composite pipe are met with high integration level and high strength.

The application discloses a preparation method of a lithium ion battery negative electrode material of g-C3N4 doped with CuO with a sandwich-shaped morphology. Firstly, g-C3N4 is prepared by using a thermal polymerization method and calcining melamine as raw material; then, a CuO / C3N4 composite material is obtained by adding g-C3N4 in the process of preparing CuO by using a precipitation method. The preparation process is simple and convenient, and the cost is low. The negative electrode material prepared by the method has a high specific surface area, which is helpful to improve the specific capacity of the material. The g-C3N4 is inserted into the middle of CuO layers, which relieves the volume expansion of CuO during large-current charging and discharging. The CuO / C3N4 composite material has excellent rate performance and charging and discharging cycle stability as a lithium battery negative electrode material.

The invention belongs to the technical field of sand consolidation agent preparation, and particularly relates to a sand consolidation agent and a preparation method thereof. The sand consolidation agent is composed of a component A and a component B, the component A is prepared from the following raw materials: biphenyl novolac epoxy resin, hexa (4-hydroxymethyl phenoxy) cyclotriphosphazene, modified nano calcium zirconate, cage-shaped octa (aminophenyl) silsesquioxane, n-butyl glycidyl ether, a KH-550 silane coupling agent, polyether amine, fumed silica and a de-foaming agent; the component B is prepared from the following raw materials: polyborosilazane and 2-ethyl-4-methylimidazole. Cage-shaped octa (aminophenyl) silsesquioxane in raw materials of the sand consolidation agent strengthens the stability of a network structure through chemical bonding, hexa (4-hydroxymethylphenoxy) cyclotriphosphazene achieves thermal stabilization through chemical bonding and physical dispersion, and modified nano calcium zirconate plays a physical support role. The three synergistically improve the heat resistance of the system.

The present application relates to a kind of porous ceramic diaphragm of alumina lithium prepared with secondary aluminum ash as raw material, belong to diaphragm material field.The method with secondary aluminum ash as main raw material, cooperate with lithium hydroxide, pore-forming agent, doping adjuvant, after moulding, high-temperature calcination obtains the porous ceramic with alumina lithium as main phase, again after hydrothermal surface lithiation of lithium hydroxide solution, obtain the porous ceramic diaphragm material used in lithium ion battery.The porous ceramic diaphragm has excellent thermal stability, completely eliminates the security problem that traditional lithium ion battery diaphragm is shrunk and deformed to lead to internal short circuit of battery fire due to heating.The alumina lithium porous ceramic diaphragm has higher porosity, good electrolyte affinity, while alumina lithium has fast ion conduction characteristics, effectively improves the lithium ion transport efficiency of diaphragm, and then improves the capacity retention rate of battery in large current charge and discharge and long time operation.

The present application relates to the technical field of gas cylinder airtightness detection, and provides a kind of gas cylinder immersion airtight automatic detection device, including rack, water tank, top support roller, lifting frame and bottle roller, water tank is located below the rack, top support roller is rotatably arranged in the bottom of water tank, lifting frame is slidably arranged on the rack, bottle roller is multiple, and is spaced apart along the conveying direction of gas cylinder, for carrying and conveying gas cylinder into lifting frame, bottle roller can be driven by lifting frame and carry gas cylinder into water tank, several groups of top support roller and several bottle rollers are staggered along the conveying direction of gas cylinder, after bottle roller carries gas cylinder into water tank, top support roller can be out from adjacent bottle roller and lift gas cylinder, so that gas cylinder is separated from bottle roller, and gas cylinder is rotated by rotating drive.The present application provides a kind of gas cylinder immersion airtight automatic detection device, realizes the conversion of supporting component under the two working conditions of gas cylinder into water and detection, so that the surface of gas cylinder can be completely unobstructed in observation stage.

The application belongs to the technical field of additive manufacturing material preparation, and particularly relates to a preparation device and method of high-fiber-content reinforced polyether ether ketone 3D printing wire rod, which comprises: a material source assembly for providing an impregnated tape; a filament splitter in communication with the material source assembly, which divides the wide impregnated tape into multiple narrow strips through a cutter shaft and a circular disc split cutting knife; multiple multi-nozzle step-by-step pultrusion devices corresponding to the narrow strips, which are provided with multiple nozzles with gradually reduced diameters at the discharge end, and are used for heating, guiding, pressurizing, impregnating and cooling the narrow strips; and a wire collecting reel in communication with each pultrusion device. Through the parallel process of "first dividing and then pulling", the application solves the problems of low forming freedom of the wide pre-impregnated tape, large damage and high cost in traditional wire rod preparation, and realizes efficient and low-damage continuous production of high-performance 3D printing wire rod.

The present application relates to the technical field of lead-acid battery manufacturing, and particularly relates to a lead-acid battery vacuumizing and acid-adding device, which comprises a conveying belt, an acid-adding tank, a three-way valve, an acid storage mechanism, an acid-adding pipeline, a filling mechanism, an adjusting mechanism, a vacuum system and a control system. The three-way valve core is provided with valve holes one, two and three, and a closed arc surface. The filling mechanism is provided with a sealing plunger, which blocks the filling needle head during vacuumizing and opens during acid injection. After the vacuum system vacuums the battery, the acid storage mechanism injects pre-stored quantitative acid into the battery under negative pressure. The lead-acid battery vacuumizing and acid-adding device realizes accurate control of acid quantity, elimination of bubbles and automatic continuous production, and has the advantages of high acid-adding precision, high efficiency and good battery consistency.

This invention discloses a method for preparing carbon fiber epoxy composite materials that combine high mechanical properties and a low coefficient of thermal expansion. Belonging to the field of composite materials, it addresses the technical challenge of simultaneously improving the mechanical properties and reducing the coefficient of thermal expansion of composite materials using existing carbon fiber processing methods. By non-covalently modifying carbon nanotubes with ionic liquids, unlike traditional covalent modification methods, the intrinsic strength of carbon nanotubes is preserved, constructing a multi-mechanism synergistic interface reinforcement system. This specifically addresses the key problems of traditional sizing agents having a single interfacial effect and hindered stress transmission. In this invention, flexible polyimide acts as a bridge at the interface, while rigid carbon nanotubes construct an effective armor on the fiber surface. The two form a rigid-flexible composite structure at the interface, which effectively alleviates interfacial stress concentration, significantly improves interfacial stress transmission efficiency, achieves uniform dispersion of external loads, and ultimately improves the mechanical properties of the carbon fiber epoxy composite material.

The application provides an electrolyte infiltration method. The electrolyte infiltration method comprises the following steps: S1, cooling a roasted battery cell; S2, placing the cooled lithium ion battery cell in a vacuum environment, and then introducing carbon dioxide gas; S3, introducing the battery cell into a liquid injection process, performing vacuum extraction treatment, and then performing liquid injection treatment; S4, pressure treatment; S5, vacuum extraction treatment; S6, repeating steps S4-S5 at least once; S7, introducing a protective gas to atmospheric pressure, adding a carbon dioxide additive to the battery cell after liquid injection, and obtaining an electrolyte-infiltrated battery cell. The electrolyte infiltration method provided by the application ensures that the electrolyte is fully infiltrated into the small pores inside the lithium ion battery, the infiltration time is short, high-temperature storage is not required, the production efficiency of the lithium ion battery is improved, and the electrochemical performance of the lithium ion battery is improved.

The application discloses an intelligent closestool and a descaling method thereof, and comprises the following steps: S1, starting descaling; S2, switching a reversing valve downstream of an instant heater to a state of opening a cleaning port communicated with a water spraying body; S3, starting a liquid pump connected with a switching valve upstream of the instant heater, and the liquid pump stays for T1 time in the state of opening the cleaning port of the reversing valve, so as to pump descaling liquid in a liquid storage tank communicated with the liquid pump to the water spraying body and discharge the descaling liquid from a water outlet of the water spraying body; S4, switching the reversing valve to a state of opening a descaling port communicated with the liquid storage tank, and the liquid pump is in an open state for T2 time, so that the descaling liquid circulates in a loop formed by the liquid storage tank, the liquid pump, the switching valve, the instant heater and the reversing valve for T2 time. By arranging steps S2 and S3, the descaling liquid in the liquid storage tank can be used to replace residual cleaning water in a passage between the switching valve and the water spraying body, so that dilution of the descaling liquid by the residual cleaning water in the water passage is avoided, and the descaling effect is effectively improved.

The application provides a device and method for vacuum-assisted pultrusion of thermoplastic composite rods, and belongs to the field of civil engineering. The device solves the problem of bubbles generated by melt flow of thermoplastic resin, which reduces the forming quality of the thermoplastic composite rod. The device comprises a preheating module for preheating a thermoplastic prepreg tape, a heating module, a cooling module and a vacuum pumping device. The heating module comprises a first heating cavity, a vacuum cavity and a second heating cavity connected in sequence. The vacuum cavity is connected with the vacuum pumping device through a vacuum pumping port. The vacuum cavity adopts a gradient vacuum pumping design. Second heating components are arranged in the first heating cavity, the vacuum cavity and the second heating cavity. The cooling module is connected with the second heating cavity and used for cooling a thermoplastic composite rod product. Conical constraint components are arranged in the first heating cavity, the second heating cavity and the cooling module. The conical constraint components are used for narrowing the transmission path of the thermoplastic prepreg tape in the corresponding module. The device is mainly used for forming the thermoplastic composite rod.

The invention belongs to the technical field of composite material isolation sleeves, and discloses a forming method of a high-strength composite material isolation sleeve, before resin is cured, a 0.8-1.2 MPa pressure carrier is injected into a bag type male mold cavity, uniform tension in all directions is applied to a continuous fiber prefabricated body through bag body expansion, and a reserved gap between the prefabricated body and a female mold is matched with the tension expansion size. According to the design, the fibers are regularly arranged in the whole curing process, local curling and stacking are avoided, finally, the tensile property of the formed composite material isolation sleeve is greatly improved, the compression strength meets the strict requirement of a magnetic drive pump serving as a pressure-bearing component, and the failure risk caused by disordered fiber stress of a traditional product is fundamentally solved; the method comprises the following steps: firstly, sucking a module cavity for 15-20 minutes under the negative pressure of-0.095 to-0.098 MPa, and thoroughly exhausting air in the cavity; and the defoamed resin is sucked into the cavity by means of negative pressure, and meanwhile, the flow velocity is controlled to prevent fiber displacement, so that the resin is ensured to fully and uniformly infiltrate the preform.

The application provides a solid glue coating, a preparation method and application thereof, and a preparation method of a surface-coated composite material, and belongs to the technical field of functional materials.The solid glue coating provided by the application comprises the following preparation raw materials in mass fractions: 50-95 parts of base resin powder, 1-20 parts of graphene oxide-nano titanium dioxide composite material, 1-20 parts of barium sulfate, 0.1-10 parts of a curing agent, 0.01-5 parts of a defoaming agent, and 0.01-5 parts of a wetting and leveling agent.The solid glue coating provided by the application is a high-thermal-conductivity and high-fluidity composite resin powder, can be coated on the inner surface of a mold in the forming stage of a composite material product, and is heated and solidified together with a composite material matrix, wherein the solid glue coating forms a uniform, smooth and dense coating on the surface of the composite material matrix, is perfectly fused with the composite material matrix, and thus an integrally-formed surface-coated composite material is obtained, and the operation is simple and environment-friendly.