120 results about "Material repair" patented technology

The invention relates to the technical field of microelectronic packaging, and discloses a packaging method of a multi-layer stacked memory chip, which comprises the following steps: constructing a 3D packaging structure layout of a memory chip to be packaged; constructing a physical field of the 3D packaging structure layout, and integrating the physical field and the field action relationship into the 3D packaging structure layout to obtain a coupled 3D packaging structure layout; calculating a hot spot, a high stress area and a high electric field area of the coupled 3D packaging structure layout, and optimizing the coupled 3D packaging structure layout to obtain a target packaging structure layout; performing multi-layer stacking on the to-be-packaged storage chip to obtain a multi-layer stacked storage chip; and packaging the multi-layer stacked memory chip to obtain a packaged multi-layer stacked memory chip, activating packaging repair of the self-repair material by using a preset material repair algorithm to obtain a packaging repair material, and performing multi-layer stacked packaging of the to-be-packaged memory chip based on the packaging repair material. According to the invention, the packaging stability of the multi-layer stacked storage chip can be improved.

The invention provides atomic cluster powder, a manufacturing method thereof and a high-temperature alloy crack defect repairing method, high-frequency pulse discharge impact is continuously performed on a target material through a high-frequency pulse power supply, atomic-scale cluster powder is generated, and the atomic cluster powder is obtained. The repairing method comprises the following steps: cleaning and drying a high-temperature alloy material component with a crack defect, and putting the high-temperature alloy material component in a glove box; the atomic cluster powder is piled above the crack defects of the high-temperature alloy material component, and vibration treatment is carried out, so that the atomic cluster powder fully permeates into the crack defects of the high-temperature alloy material component; and the high-temperature alloy material component is put into a heat treatment furnace, the atomic cluster powder is melted, and metallurgical repair of the crack defect is achieved. According to the method, high-temperature alloy crack defect repair and the size of a connecting material are reduced to the atomic scale, same-material repair of crack defects of a high-temperature alloy material component can be achieved at the low temperature, and the method has the advantages that the process is simple, energy consumption is low, and the high-performance high-temperature alloy material is high in applicability.

The invention relates to the technical field of ceramic material repairing, in particular to a one-time sintering repairing method for reactive sintering silicon carbide material defects. Comprising the following steps: measuring the defect size of reactive sintering silicon carbide, and cutting a silicon-based alloy block slightly larger than the defect size; carrying out ultrasonic cleaning on the defect part of the reactive sintering silicon carbide by adopting an organic solvent, wherein the ultrasonic time is 20-40 minutes; placing the silicon-aluminum alloy block above the defect of the reactive sintering silicon carbide, and uniformly paving silicon powder on the surface of the reactive sintering silicon carbide; the mass fraction of the silicon powder is 3-8% of that of the reactive sintering silicon carbide; setting a proper sintering temperature, heating according to a heating rate of 3-10 DEG C / min, and keeping the temperature for 1-3 hours after the sintering temperature is reached; the sintering temperature is higher than the melting point of the silicon-based alloy; and polishing the surface of the repaired reactive sintering silicon carbide to obtain the repaired reactive sintering silicon carbide. The method has the advantages that low-porosity and high-density repair of the crack area is guaranteed, and the optical performance of the reflector is not reduced.

The invention relates to the technical field of composite material repair, in particular to a short carbon fiber technology-based composite material rapid repair method, which comprises the following steps of short carbon fiber pretreatment; preparing a resin matrix; preparing spraying slurry; cleaning the damaged area by laser; scanning the unmanned aerial vehicle; layering and synchronous curing; evaluating the quality of the coating; a chopped fiber spraying technology is applied to the aspect of composite material damage repair, repair time is shortened, cost is reduced, interface bonding strength and fiber orientation are optimized, and the problem that the mechanical property recovery rate of the repaired material is low due to the fact that interlayer stripping or fiber orientation mismatching is prone to occurring in a repair area is solved. And the method can be used for rapidly detecting the thickness of the bubble defect, is suitable for efficient, accurate and light-weight repair of the damage of the CFRP, and is particularly suitable for on-site rapid maintenance scenes.

The invention discloses an ultrasonic-annular water cooling synergetic thermosetting composite material repairing method and equipment, on the basis of coaxial annular water cooling, an annular cooling cavity with a variable contour and a structural design of a closed ring with a plane contour which can be circular, elliptical, waist-circular or polygonal are introduced, so that the inner side contour of a cooling ring can be more attached to a welding area. For a large-size or irregularly-shaped thermosetting matrix component repaired by adopting ultrasonic local fusion welding, the cooling zone can be tightly attached to the outline of a welding interface in the circumferential direction through the design, heat is effectively prevented from overflowing along a complex boundary, compared with a fixed circular or linear cooling structure, the range of a heat affected zone can be further narrowed, and the service life of the component is prolonged. And a high-temperature area in the thermosetting matrix is more limited near a welding interface, so that the overall temperature of the thermosetting matrix is always lower than the glass-transition temperature while sufficient melting and flowing of the thermoplastic patch are ensured, and resin degradation and interface strength attenuation caused by local overheating are avoided.

The invention provides a movable square cabin for material repair and a use method thereof, and solves the problems of long material repair period, poor mobility and the like in the prior art, and the main scheme is that the movable square cabin comprises a cabin body which can be connected with a movable trolley through an external vehicle-mounted platform for transportation operation; the increasing and decreasing rapid forming module comprises a gantry table, a welding machine and a milling table which is adjusted through three axes of the gantry table, the three-axis adjusting direction of the gantry table corresponds to the length, width and height direction of the cabin body, a synchronous sliding rail is further fixed to the position, corresponding to the bottom of the milling table, of the cabin body, and the rail direction of the synchronous sliding rail corresponds to the length direction of the cabin body; a plurality of rotary tables are connected to the gantry table in a sliding mode, each rotary table clamps a tool block to fix an external material to be repaired, the rotating direction of the rotary tables is the same as the track direction of the synchronous sliding rails, the welding machine is fixed to the outer sides of the tail ends of the synchronous sliding rails and arranged opposite to the gantry table, and the bottom of the welding machine is correspondingly connected with side sliding rails in a sliding mode. The rail direction of the side sliding rails is the same as the width direction of the cabin body.

The invention relates to the technical field of material repair, and discloses a wave-absorbing foaming adhesive film and a preparation method thereof.The wave-absorbing foaming adhesive film comprises a fiber layer, a first surface and a second surface, and the fiber layer is provided with the first surface and the second surface opposite to each other in the first direction; the first adhesive layer is arranged on the first surface; the second adhesive layer is arranged on the second surface; the first backing layer is arranged on the surface, far away from the fiber layer, of the first adhesive layer; the second backing layer is arranged on the surface, far away from the fiber layer, of the second adhesive layer; wherein the wave absorbing intensity of the first adhesive layer and the wave absorbing intensity of the second adhesive layer are gradually changed in the second direction, and the second direction is perpendicular to the first direction. Different areas in the wave-absorbing foaming adhesive film are different in wave-absorbing strength, the wave-absorbing foaming adhesive film has flexible wave-absorbing performance strength distribution, and the wave-absorbing foaming adhesive film has a foaming function and is particularly suitable for repairing functional structures such as wave-absorbing honeycombs and the like.

The invention discloses an evaluation method, device and equipment for composite material repair consumables and a medium, and relates to the technical field of composite material structure maintenance. A series of controllable disturbance factors are introduced around reference process parameters to simulate actual fluctuation, and the system tests the performance of the repair consumables under non-ideal process conditions, so that the safety boundary of qualified products produced by the repair consumables is determined, and a more comprehensive and practical evaluation system is provided. A process window volume is introduced as an objective and comparable robustness quantitative index, and a process space boundary is efficiently predicted by means of a Gaussian process regression model, so that the problems of high cost and low efficiency of a traditional exhaustion test method are avoided. According to the method, the process robustness for determining the stability of the repair consumables in the actual maintenance environment is converted into the quantifiable and comparable equivalent curing process window and the measurement value thereof, scientific screening of the repair consumables is realized, and the quality risk in actual maintenance operation is remarkably reduced.

The utility model, which relates to the technical field of circuit board repairing, discloses a folding and pressing damage repairing device comprising a machine table provided with a material carrying table, a fixing mechanism, a conveying mechanism, a repairing mechanism and an adjusting mechanism. When the material repairing device is used, a material to be repaired is placed on the material carrying table and fixed through the fixing mechanism, then the position of the repairing pressing head is adjusted through the adjusting mechanism, the bottom of the repairing pressing head is flush with the top face of the material, and then the conveying mechanism drives the material carrying table to move under the repairing pressing head. And when passing through the repairing pressure head, warped edges or bumps on the material are flattened by the repairing pressure head, so that the material is repaired by folding and pressing damage, manual repairing is not needed, and the repairing efficiency is improved.

This invention belongs to the technical field of thermal insulation material repair in water conservancy projects. Specifically, it discloses an embedded permanent thermal insulation template anchoring and repair structure and method for dam surfaces. The structure includes a broken bridge support structure located inside the thermal insulation template. One inner end of the broken bridge support structure is connected and fixed to the concrete dam body via an anchoring device. A connecting screw is installed inside the outer end of the broken bridge support structure. The outer end of the connecting screw has a threaded hole, and a pressure plate is installed at the outer end of the connecting screw. The threaded end of the screw passes through the central hole of the pressure plate and connects and is fixed to the threaded hole of the connecting screw, so that the pressure plate abuts against the outer protective layer of the thermal insulation template. This allows the original broken bridge support structure to be used to fix the newly replaced outer protective layer, achieving the repair of the thermal insulation template.

The application discloses a kind of quick repair methods of ternary lithium material, it is related to battery material repair field.The method includes that ternary pole piece is broken, screening is mixed with white carbon black, carries out primary roasting in inert gas atmosphere, removes white carbon black by separation, removes suspended substance by washing with water, after material drying, ball milling, carries out secondary roasting in inert gas atmosphere, obtains repaired ternary lithium pole piece powder.The application carries out repair processing to the pole piece of electric performance drop, adds white carbon black in the process of roasting and removing organic matter, utilizes white carbon black and the reaction of HF generated by pyrolysis, avoids the reaction of HF and ternary lithium crystal, guarantees the integrity of ternary crystal structure, significantly improves the electric performance repair effect of pole piece powder, after being applied to the preparation battery, capacity, charging efficiency and electric cycle stability are significantly improved, avoid the ecological pollution caused by irregular discharge of waste ternary lithium material to environment, with economy and sustainable development.

The invention provides a characterization method and a characterization device for time-varying characteristics of mechanical properties of a composite material in a curing process. The characterization method comprises the following steps: step 1, obtaining reaction enthalpy released by complete curing of a to-be-detected prepreg with unit mass; 2, obtaining multiple groups of compression samples and DSC samples; 3, curing the compression sample and the DSC sample at the same time by adopting a composite material repairing instrument, terminating the curing process of each group of samples at different preset time, and recording the temperature T of each group of samples at the curing termination; step 4, for each group of samples, measuring the compression modulus of the compressed sample at the corresponding temperature T after the step 3 by using a mechanical testing machine, and obtaining the curing degree of the DSC sample after the step 3; 5, according to the multiple sets of curing degrees and compression moduli, the moduli of the resin under the different curing degrees are obtained through backstepping by means of the self-consistent field mesomechanics model, and then the time-varying characteristics of the mechanical property of the composite material in the curing process can be obtained. The characteristics that the composite material repairing instrument can safely and controllably terminate the composite material curing process at any time, the mechanical property of the composite material in the thickness direction, the compression test is easy to implement and the like are fully combined, and the problems that composite material mechanical samples are difficult to machine and mechanical properties are difficult to measure under different curing degrees and different temperatures are solved; accurate measurement of the time-varying characteristic of the mechanical property of the composite material is realized.

The present disclosure provides an aviation composite material repair digital twin and intelligent repair method, system and device, wherein the method comprises: transmitting the repair elements of the aviation composite material repair entity collected in real time to the aviation composite material repair digital twin; the digital twin establishes an initial visual digital model of the repair entity according to the structure parameters and damage parameters of the repair entity; the digital twin searches the design space according to the repair process parameters, predicts the key performance of different repair process parameter combinations, and obtains the target repair process parameters required for the repaired repair entity to achieve the key performance; the digital twin predicts the full-field distribution information of the key performance of the repair entity according to the repair process parameters and the initial visual digital model, and displays and analyzes; and transmitting the received target repair process parameters to the repair tool; setting the repair process according to the target repair process parameters through the repair tool, and implementing intelligent repair of the repair entity.

The utility model relates to building waterproof technical field, a kind of anti-seepage anti-cracking type underground engineering composite waterproof layer structure, base layer further include: the first waterproof layer of playing primary waterproof function, set in the top of the base layer, the top of the first waterproof layer is provided with the second waterproof layer of playing the waterproof effect of reinforcement;The utility model is through the fourfold block of "base layer anti-seepage+coating closed+coiled material barrier+self-repairing concrete", realizes above P12 anti-seepage grade;HPT-X nuclear material inhibits crack generation, non-solidified coating buffering deformation stress, YX-H material repairs microcrack, forms full-cycle anti-cracking system;Polymer coiled material anti-aging, drainage system reduces water pressure, ensure that waterproof layer long-term effective, the structure is through material synergy and system design, solved the problems, such as traditional waterproof layer easy cracking, easy aging, maintenance difficult, applicable to high water level, geologically complex area's underground engineering.

A construction material repair device designed for filling, repairing, and restoring defects in construction materials comprising right-handed female tapered helical thread to aid insertion and adhesively secured into the construction material to cosmetically repair and structurally restore the defect in minimal steps, time, and cost. The device is manufactured in a variety of materials to match or complement the construction material requiring repair.

The utility model discloses an environment-friendly material repairing device based on indoor decoration, which comprises a front support frame, a rear support frame and a repairing main machine, the bottom of the repairing main machine is communicated with a repairing mechanism arranged between the two support frames, the repairing main machine is fixedly connected with the tops of the two support frames, and an adsorption assembly is arranged below the two support frames; the repairing mechanism comprises a left sliding rail and a right sliding rail, the two sliding rails are fixedly installed between the front supporting frame and the rear supporting frame, and a lead screw is rotationally connected between the front face and the back face of the inner wall of each sliding rail. According to the environment-friendly material repairing device based on indoor decoration, a repairing material is sprayed to a local damaged area through the repairing spray head, and the repairing material is evenly smeared through the repairing roller, so that rapid repairing of a decorative plate is achieved; and through cooperation of the elastic pressure assemblies, the repairing rolling wheels can make good contact with the surface of the decorative plate.

The invention relates to the field of airplane composite material maintenance, and particularly discloses a composite material layering damage in-situ prefabrication method based on chemical reaction, which comprises the following steps: cutting prepregs, and obtaining the prepregs with corresponding quantity and angle; calculating the volume V and the mole number n of the required gas; calculating the mass of the required chemical reagent according to the mole number n of the required gas; laying a predetermined number of layers of prepregs, and then spreading a chemical reagent at the laying position on the prepregs; a preset number of layers of prepregs are laid on the upper portion where the chemical reagent is laid; and the laid composite laminated plate is heated and pressurized to be cured, and gas generated by decomposition forms a cavity in the composite laminated plate after curing is completed. In the paving and manufacturing process of the composite material, a small amount of chemical reagent capable of generating gas through thermal decomposition is arranged between prepreg paving layers, in the heating and curing process of the composite material, the chemical reagent is decomposed to generate gas, and then layering damage can be prefabricated in the composite material.

The invention provides repairing equipment for defects of a fiber reinforced composite material and a batch repairing method. The repairing equipment comprises an atmospheric pressure plasma processing module, a to-be-repaired part detection and analysis module of the to-be-repaired fiber reinforced composite material, a repairing data monitoring and information flow module, a post-repairing detection module and a repairing operation process planning module. The invention also discloses a batch repair method based on the repair equipment, which comprises the following steps: constructing a repair sample data set, and constructing and training a composite material repair machine learning model by using a machine learning method; on the basis of a machine learning model and repair data, personalized repair processes and parameters are generated, batch repair is carried out, and model updating iteration is continuously carried out. By establishing batch repairing equipment and combining automatic transmission and precise process control, a plurality of samples can be repaired at the same time, and the repairing efficiency is improved.

The application discloses a kind of carbon fiber composite material defect repair equipment and repair method, it is related to gas cylinder repair equipment field, technical scheme is, including chassis, the middle part of chassis is set through passage, the lower portion of passage is set for supporting the support mechanism of carbon fiber gas cylinder, the upper surface of chassis one side parallelly arranged two slide rails, each slide rail is slidably connected with a slider, the clamping mechanism for clamping carbon fiber gas cylinder is fixedly arranged on slider, the middle part of clamping mechanism is set inflation passage, the inflation passage is coaxial with the axis of carbon fiber gas cylinder with gas inlet;The side of chassis is fixedly set main push rod;It further includes the guide rail fixedly set in the side of chassis, the repair mechanism for carbon fiber composite material repair is slidably arranged on guide rail.The beneficial effects of the application are: simple structure, convenient to use, fast repair speed, effectively shorten the repair time of carbon fiber gas cylinder, improve repair efficiency, reduce manpower and material cost.

This invention provides an active material repair patch, comprising non-woven fabric and release paper. The release paper is formed on the lower end face of the non-woven fabric. A wrapping bag is disposed between the non-woven fabric and the release paper. Specifically, the wrapping bag consists of two sets of wrapping films sealed on all four sides. An air bag I and an air bag II are disposed inside the wrapping bag. Two sets of soluble microneedles are disposed on the other side of the wrapping film adjacent to the non-woven fabric. An active repair material is applied to the corresponding position of the wrapping film adjacent to the release paper. This invention involves applying the non-woven fabric to the affected area, and then pressing the repair patch to puncture the lower wrapping film through the soluble microneedles. The active repair material is then applied to the affected area through the puncture holes. Due to the adhesive properties of the repair material, the gas inside the air bags, released through the puncture holes, accumulates around the applied patch, preventing the non-woven fabric from sticking to the surrounding area and causing pain when the patch is removed for dressing changes.

The application relates to a composite material repairing assembly and a composite material repairing method, wherein the composite material repairing assembly comprises: a pretreatment layer, which can be laid on a wind power blade and covers a to-be-repaired area; a pouring auxiliary material layer, which is arranged on one side of the pretreatment layer in a thickness direction of the composite material repairing assembly; a first vacuum layer, which is arranged on a side of the pouring auxiliary material layer away from the pretreatment layer, and covers the pouring auxiliary material layer; and a second vacuum layer, which is arranged on a side of the first vacuum layer away from the pretreatment layer, and has an area greater than that of the first vacuum layer. The composite material repairing assembly can improve repairing efficiency and convenience.

An input unit 101 inputs an elastic wave 21 to a furnace wall 11 having a refractory brick 16 that is a refractor. A reception unit 102 receives a reflection wave 22 of the elastic wave 21. A control unit 103 determines a frequency characteristic of the reflection wave 22, determines a distance characteristic from the frequency characteristic, and generates a map showing likelihood of a reflection position in the refractory brick 16 based on the distance characteristic. The state of the refractory brick 16 is thus visualized.

The utility model relates to the technical field of material repair, and discloses a welding gun water cooling device of an electric spark surfacing repair machine, which comprises a repair machine main machine and a welding gun, the repair machine main machine is connected with the welding gun through a connecting line, and the side wall of the welding gun is respectively provided with a liquid outlet and a liquid inlet. One side of the repairing machine main machine is sequentially provided with a guiding and returning water pump, a cooling box and a guiding-out water pump, the input end of the guiding-out water pump is connected with the welding gun through flow guiding pipes, and the two flow guiding pipes are connected with the liquid outlet and the liquid inlet through hoops. According to the utility model, the heat dissipation area is increased through the annular spiral cooling channel, and the cooling efficiency is improved; the flexible pipeline is in buckle type surrounding clamping connection, rapid disassembly and assembly are facilitated, the operation flexibility is improved, and the burden of a welding gun is relieved; a filtering device is additionally arranged in a cooling liquid circulation path, blocking is effectively prevented, and the stability and durability of the system are improved.

The present application relates to the technical field of composite material repair, and particularly relates to a composite material rapid repair method based on chopped carbon fiber technology, comprising the following steps: chopped carbon fiber pretreatment; resin matrix preparation; spray slurry preparation; laser cleaning of the damaged area; scanning of the unmanned aerial vehicle; layered synchronous curing; evaluation of the coating quality; the chopped fiber spraying technology is used in the aspect of composite material damage repair, the repair time is reduced, the cost is reduced, the interface bonding strength and the fiber orientation are optimized, the problem that the interlayer peeling or the fiber orientation mismatching is prone to occur in the repair area, and the mechanical property recovery rate of the repaired material is low is solved, the thickness of the bubble defect can be rapidly detected, the method is suitable for efficient, accurate and lightweight repair of carbon fiber reinforced composite material (CFRP) damage, and is particularly suitable for on-site rapid repair scene.

The invention discloses jelly type UV (ultraviolet) curing putty and a preparation method of the jelly type UV curing putty, and belongs to the technical field of material repair. The UV curing putty is prepared from the following raw materials in percentage by weight: 18 to 22 weight percent of bisphenol A epoxy resin, 50 to 60 weight percent of three-functionality UV monomer, 8 to 12 weight percent of two-functionality UV monomer, 0.1 to 0.3 weight percent of defoaming agent, 7 to 10 weight percent of fumed silica and 4.5 to 7.5 weight percent of photoinitiator. According to the UV curing putty disclosed by the invention, by adjusting the type and proportion of reactive diluent and the addition amount of prepolymer, the UV curing effect is improved; the UV curing putty obtained by the invention is jelly-shaped and has a good filling effect on pores of wood, and meanwhile, the flexibility of a curing film is good, so that the effect after filling is ensured.

The application belongs to the technical field of ceramic matrix composite material repair, and relates to a SiC / SiC composite material suture repair method and application. The method can repair the overall defect in the thickness direction of the SiC / SiC composite material by designing a matched suture interface, using a repair body and a suture line made of the same material as the body and being fixed, and combining a densification and reinforcement process, and can ensure that there is a continuous fiber connection between the repaired part and the body, thereby expanding the application range of the SiC / SiC composite material repair, significantly improving the mechanical properties of the composite material after repair, enhancing the reliability and service life of the composite material, and meeting the needs of related fields for high-performance ceramic matrix composite material repair.

A method for lifting and turning steel structures without welded lifting lugs involves CNC-controlled or manual drilling of permanent openings in the vertical plates or webs of T-beams of the steel structure, with the positions and number matching the crane's lifting points. Permanent reinforcing plates are welded around these openings for reinforcement. The opening dimensions must meet the pin assembly requirements of the turning connection device, and the reinforcing plate dimensions must meet the assembly requirements of the lifting and turning device and comply with safety regulations. After the tooling is connected to the permanent openings in the structure, during lifting and turning at 180°, the load-bearing connecting plate and the free edge of the T-beam are in line contact, facilitating the bearing of line load pressure and thus optimizing the overall stress distribution of the tooling. This method completely eliminates lengthy and high-risk additional processes such as lifting lug installation, flaw detection, cutting, grinding, and base material repair. Preparation time before lifting and turning and post-turning processing time are reduced by more than 80%, significantly improving production line efficiency.

The invention relates to a preparation process of a light-transmitting metal plastic part, and belongs to the technical field of composite materials. A diene monomer is introduced into matrix resin by using a modified monomer, cesium-tungsten bronze is modified, dienophile is introduced into the surface of cesium-tungsten bronze, and material repair is realized by using Diels-Alder reaction, so that the dispersity of cesium-tungsten bronze and the binding capacity of cesium-tungsten bronze and matrix resin are effectively improved; in addition, the cesium-tungsten bronze has an extremely strong absorption effect on ultraviolet light and infrared light, the infrared band in sunlight carries most heat and has an extremely strong heat effect, and the cesium-tungsten bronze can effectively absorb energy in the infrared light and convert the energy into heat energy, so that the heat-resistant performance of the material is improved. The temperature of the area where the material is located is increased, so that the reaction rate of the Diels-Alder reaction is effectively increased, and the self-repairing speed of the material under sunlight is increased.

The invention discloses a masonry hole rapid layering repairing composite material and method based on solid waste, and belongs to the technical field of building material repairing and solid waste recycling. The composite material is composed of 10-30 parts of alpha-ethyl cyanoacrylate (ECA) and 1-30 parts of alkaline solid waste powder, such as combustion ash powder CAP and alkaline residue powder SRP. The repairing method comprises the steps that after holes are cleaned, a layering process is adopted, an alkaline powder layer with the thickness of 2-3 mm is firstly filled, then ECA is poured to infiltrate the holes and initiate second-level curing, and operation is cycled till the holes are filled. According to the invention, high alkalinity of industrial solid waste is utilized to initiate rapid polymerization of ECA, and the solid waste is used as a reinforcing filler; by optimizing the layering thickness, the technical problems of incomplete internal curing, concentrated heat release, generation of pores and layering and the like during large-volume repair are effectively solved, and ultra-rapid forming, high early strength, excellent interface bonding performance and overall compactness of the prosthesis are realized. The method is simple in process, green, economical, high in field adaptability and particularly suitable for rapid in-situ repair of cement-based materials and red brick masonry.

The present invention relates to the technical field of epoxy resin composite material repair, and in particular to a liquid epoxy resin composite material repair adhesive and a preparation method thereof. In the preparation method, a powdered curing agent is mixed with a monofunctional epoxy resin to react, and then liquid imidazole is added and stirred to react to obtain a modified imidazole liquid curing agent; a thixotropic agent and a toughening agent are added to the epoxy resin, stirred evenly, and then cooled to room temperature to obtain a modified epoxy resin system; the modified epoxy resin system and the modified imidazole liquid curing agent are mixed evenly in proportion to obtain a liquid epoxy resin composite material repair adhesive. While ensuring a relatively high glass transition temperature of the epoxy resin, the curing temperature of the curing agent can be relatively low, and the mechanical properties of the adhesive remain unchanged when used under high temperature conditions. The heat resistance of the adhesive is better, and the repair adhesive can simultaneously meet the requirements of low-temperature curing and high-temperature use, and the processability of the adhesive can be guaranteed.