268 results about "Laminated composites" patented technology

The invention discloses a method for preparing a copper-aluminum layered composite board by introducing laser into an intermediate layer, which comprises the following steps: introducing laser into the intermediate layer (Al-Cu-Mg-Si-Zr-Sc series alloy), so that on one hand, copper and aluminum to be compounded are in a heating state to be subjected to rolling compounding by utilizing the heat conduction effect of the heated intermediate layer; the rolling reduction rate and the rolling mill capacity requirement are obviously reduced; and on the other hand, the added middle layer has excellent obdurability, so that the cooperative deformation capacity between the to-be-compounded dissimilar materials can be improved, and the interface bonding performance of the composite material is improved. And a mode of'introducing laser into the middle layer and carrying out short-time online annealing treatment 'is adopted to replace'large down pressure and long-time diffusion annealing' adopted by a traditional copper-aluminum composite material, so that the processing and forming efficiency of the copper / aluminum composite material is remarkably improved, and the method has the characteristic of short process.

The invention belongs to the field of continuous SiC fiber reinforced metal matrix composite materials, and particularly relates to a SiCf / TiMoNb-Ti2AlNb / Ti2AlNb laminated composite material and a preparation method of the SiCf / TiMoNb-Ti2AlNb laminated composite material. The composite material is of a hot isostatic pressing composite structure of a precursor wire and a Ti2AlNb sheath outside the precursor wire, the precursor wire is formed by uniformly distributing SiC fibers in a TiMoNb-Ti2AlNb laminated alloy matrix, the volume fraction of the SiC fibers accounts for 40-55% of the total volume fraction of the SiCf / TiMoNb-Ti2AlNb / Ti2AlNb laminated composite material, and the composite material is good in combination, compact and free of holes. Through the introduction of the TiMoNb-Ti2AlNb lamination layer, the composite material can be compact under a relatively low hot isostatic pressure parameter, and the effect of improving the performance can be achieved after process parameters are optimized.

The invention relates to a novel composite bipolar membrane for preparing low-carbon alcohol alkali metal salt and an electrodialysis process of the novel composite bipolar membrane, and belongs to the technical field of membrane separation and electrochemical synthesis. The composite bipolar membrane comprises a cation exchange layer, a middle catalyst layer and an anion exchange layer which are sequentially laminated and compounded, the process comprises the following steps: introducing a salt solution containing alkali metal ions into an anode chamber of a bipolar membrane electrodialysis system, and introducing a low-carbon alcohol solution into a cathode chamber; applying a direct-current electric field to the two sides of the composite bipolar membrane, so that the low-carbon alcohol is dissociated at the membrane interface to generate alkoxy ions and hydrogen ions; the alkoxy ions migrate to an anode chamber to be combined with the alkali metal ions to generate low-carbon alcohol alkali metal salt; the membrane material is high in adaptability, the membrane structure is good in stability, technological parameters are mature, and the system integration degree is high.

The invention relates to the technical field of layered composite fabrics, and discloses a moisture absorption composite crease-resistant fabric based on China-hemp and a preparation method thereof. The preparation method comprises the following steps: activating the China-hemp / cotton blended yarn, performing antibacterial finishing to obtain the antibacterial modified China-hemp / cotton blended yarn, weaving the antibacterial modified China-hemp / cotton blended yarn and the pure cotton fiber yarn, padding the obtained single-layer fabric in an anti-wrinkle finishing liquid, and laminating and compounding to obtain the moisture absorption composite anti-wrinkle fabric based on the China-hemp. The fabric is antibacterial, good in moisture absorption effect and good in crease-resistant effect.

The invention discloses an interface enhancement gradient design method of an anti-impact aviation glass laminated structure, and relates to the technical field of composite material design, the method comprises the steps of glass material preparation, interface enhancement gradient design, lamination compounding, quality detection and performance testing, the glass material comprises a glass layer material, a middle layer material and a transition layer material, the laminated composite process comprises the steps of pre-strain treatment, pre-pressing treatment, hot-pressing combination and cooling demolding, and has the advantages that by arranging the transition layers with components and performance in gradient change, the content of reinforcing materials such as nanometer titanium dioxide particles and graphene nanosheets in each transition layer is gradually increased; and compared with a traditional uniform or simple layered structure, the gradient design has the advantage that the phenomenon of interface stress concentration caused by performance difference between the glass layer and the polymer intermediate layer is remarkably reduced.

Disclosed are interlocking elongate composite bamboo industrial mats having an upper layer with two or more elongate laminated composite bamboo panels, an intermediate layer with a plurality of elongate laminated composite bamboo panels arranged in parallel and perpendicular to the laminated composite bamboo panels in the upper layer, and a bottom layer with a plurality of elongate laminated composite bamboo panels arranged in parallel to the upper layer. The three layers are secured together with fasteners consisting of a bolt, an outward-facing concave washer engaged with the bolt head, and a sleeve nut having an outward-facing washer engaged with the sleeve nut head. The interlocking elongate composite bamboo industrial mats are configured to interlock end-to-end or alternatively, side-to-side. Each of the elongate laminated composite bamboo panels comprises a plurality of kiln-dried glue-dipped elongate asymmetrically fractured bamboo strips compressed into a solid panel devoid of air spaces.

The invention discloses a compression test clamping tool, system and method for a variable-thickness beveled laminated plate composite material, and relates to the technical field of aviation composite material mechanical property testing. The first long chuck and the second long chuck are respectively mounted on a variable-thickness side and an equal-thickness side of the beveled laminated plate sample, and the first long chuck mounted on the variable-thickness side is gradually thickened on a conical beveled layer and a thin section of the beveled laminated plate sample. According to the invention, the additional bending moment caused by eccentricity of a neutral shaft is effectively inhibited through the gradually-changed thickening design of the variable-thickness side long chuck in cooperation with gap control, and active inhibition of buckling instability of a beveling area is realized in combination with rigid fixation and surface roughening treatment of the short chuck; the method has the advantages that buckling instability is restrained, a failure area is accurately positioned, and samples of different configurations are adapted.

The invention is suitable for the technical field of composite materials, and provides a laminated composite material toughening intermediate layer and a preparation method thereof, and the preparation method comprises the following steps: obtaining an aramid short fiber wet-laid non-woven felt by using a processing method of a wet non-woven material; then the aramid fiber surface is activated through hydrofluoric acid etching; the preparation method comprises the following steps: grafting soluble polyether-ether-ketone resin with an active end group on the surface of the aramid fiber, and impregnating the aramid fiber at the same time; and the polyetheretherketone resin grafted on the surface of the aramid fiber is re-endowed with crystallinity through acidification reduction reaction of the polyetheretherketone resin grafted on the surface of the aramid fiber. According to the invention, the interface bonding performance of the aramid fiber toughening middle layer in the laminated composite material is regulated and controlled, the interlayer toughness of the carbon fiber reinforced polyether-ether-ketone composite material laminated board can be effectively improved while the original crystallinity of the polyether-ether-ketone resin is maintained, the possibility of interlayer cracking can be obviously reduced, a brand new scheme is provided for interlayer toughening of such materials, and the application prospect is broad. The material has potential application prospects in the fields of aerospace special materials and the like.

The invention provides a positive pole piece of a large soft package battery cell, a preparation method of the positive pole piece, the large soft package battery cell and a plant protection unmanned aerial vehicle. The positive pole piece comprises an aluminum foil current collector and a positive pole material layer covering the surface of the aluminum foil current collector; a lithium manganese iron phosphate layer is also arranged between the positive electrode material layer and the aluminum foil current collector; and the positive electrode material layer comprises a lithium transition metal oxide positive electrode material, lithium manganese iron phosphate and an ion transmission reinforcing material. The positive pole piece comprises a lithium manganese iron phosphate layer and a positive pole material layer, and the LMFP layer is used as a physical barrier to isolate direct contact between an aluminum foil and a positive pole material, so that local temperature rise caused by puncture can be delayed, and the contact resistance is improved; the LMFP dispersed in the positive electrode material layer can block a thermal decomposition diffusion path, and the influence of the LMFP on the conductivity is counteracted by combining the high ionic conductivity of the ion transmission enhanced material; the laminated composite structure can absorb mechanical shock, inhibit energy release and block a thermal runaway chain reaction, so that the safety of the large soft package battery cell is optimized.

The invention provides a bendable substrate of a folding screen and a preparation method thereof, the bendable substrate is of a laminated composite structure, and the bendable substrate sequentially comprises a first adhesive layer, a metal elastic layer, a second adhesive layer, a deformable supporting layer and a composite adhesive film layer from one side close to the screen to one side attached and fixed; the deformable supporting layer is a bendable carbon fiber layer or metal layer with meshes. According to the bendable substrate provided by the invention, elastic recovery of the metal elastic layer and stress release of the supporting layer with the meshes are used for synergistic interaction, so that creases after long-term bending are greatly reduced, and a screen area is kept flat and touches smooth for a long time.

The invention belongs to the technical field of layered structure composite material preparation, and discloses a method for preparing a large-size laminated material through semi-solid delayed solidification forming, aluminum and titanium are used as raw materials, semi-solid delayed solidification die-casting forming equipment is utilized, and the large-size laminated material is prepared through surface treatment, titanium plate presetting, charging barrel and die preheating, charging, feeding, die-casting forming and delayed solidification annealing. And preparing the aluminum-titanium laminated composite material. According to the method for preparing the large-size laminated material through semi-solid delayed solidification forming, aiming at the technical current situations that a large-size aluminum-titanium laminated composite material is difficult to prepare, defects are easily introduced into a heterogeneous interface and the interface bonding strength is low, the preparation problem of the large-size aluminum-titanium laminated composite material in the prior art is solved; an obvious interface bonding layer is formed between the titanium layer and the aluminum layer of the prepared aluminum-titanium laminated composite material, defects such as pores and cracks do not exist, the heterogeneous interface bonding is good, the bonding strength is high, and the aluminum-titanium laminated composite material has obvious technical advantages and process advancement.

The invention relates to the technical field of aero-engines, and discloses a method and a system for designing a flanged structure of a split casing of a bolted connection laying composite material, and different laying schemes of the flanged structure of the fiber reinforced composite material are combined according to different thicknesses, laying modes, bolt hole edge distances and bolt hole distances. And establishing a three-dimensional finite element analysis model of the split casing structure with the bolt holes corresponding to each layering scheme, and simulating to obtain the layering scheme which simultaneously meets the stability of the stress concentration coefficient of the edge of the bolt holes, the stability of the stress concentration coefficient between the bolt holes, the sealing performance requirement and the strength reserve requirement. According to the method, various influence parameters of the split casing bolt connection flanging structure of the layering composite material are comprehensively considered, it is ensured that the split casing flanging structure can meet the performance without excessive redundant design, and a support is provided for forward design and engineering application of the split casing flanging structure of the bolt connection composite material; and the iteration speed and the research and development efficiency of the bolt connection composite material split casing structure are improved.

The invention discloses a preparation method of an aerogel laminated composite heat insulation pad, and relates to the technical field of aerogel heat insulation pads, and the preparation method comprises the following steps: mixing and dispersing a silane precursor and absolute ethyl alcohol, adding a basic catalyst, hydrolyzing to generate sol, and aging to form prefabricated sol; adding a flame retardant, a smoke retardant and reinforced fibers, dispersing and gelatinizing, and carrying out supercritical drying to obtain an aerogel block; and coating basalt fiber non-woven fabric with the aerogel slurry to form a base layer, laminating a plurality of layers, and carrying out hot-pressing curing, cooling, post-curing, cutting and edge covering to obtain the composite heat insulation pad. According to the invention, by optimizing the ratio of silane and a drying process, the pore structure and the thermal stability of the aerogel are obviously improved; the flame-retardant, mechanical and heat-insulating properties are improved through multi-component collaborative design, and the obtained heat-insulating pad has the characteristics of low heat conductivity, high strength, excellent flame retardance and light weight, and is suitable for multiple heat-insulating and flame-retardant fields.

The present invention discloses a heterogeneous metal laminated composite armor and a preparation method thereof, comprising the following steps: A. Prepare different heterogeneous metal elements respectively and stack them along the thickness direction; B. Vacuum package the periphery of the interface of the stacked heterogeneous metal elements; C. Achieve metallurgical bonding of the heterogeneous metal interfaces through stacked forging and heat preservation diffusion treatment; D. Obtain a heterogeneous metal laminated composite armor with specific specifications through forging and precision rolling. The present invention uses a high-strength metal as the face plate and a high-toughness metal as the back plate, and at least one of the two metals is a high specific strength material. Through stacked forging and heat preservation diffusion treatment, strong metallurgical bonding is achieved at the heterogeneous metal interfaces, and combined with subsequent forging and precision rolling processes, a lightweight metal composite armor plate with excellent anti-ballistic performance is prepared, improving the anti-multi-projectile strike ability and comprehensive protection performance of the armor, and solving the problem of weak interfacial bonding strength of heterogeneous materials.

The present application relates to the technical field of heat-conducting interface materials, in particular to a graphene / spherical alumina / polyurethane laminated composite flexible heat-conducting interface material and a preparation method thereof.The graphene / spherical alumina / polyurethane laminated composite flexible heat-conducting interface material is prepared by filling a polyurethane matrix with spherical aluminas of different sizes, and by changing the stacking order of graphene and alumina, a high-performance graphene / spherical alumina / polyurethane laminated composite flexible heat-conducting interface material is obtained (the in-plane thermal conductivity can reach 15.433 W / mK at the highest, and the out-of-plane thermal conductivity can reach 22.433 W / mK at the highest).The graphene / spherical alumina / polyurethane laminated composite flexible heat-conducting interface material prepared by the present application is stable in structure, has excellent flexibility, mechanical properties and certain insulation performance, and has a wide range of application scenarios in the field of electronic devices and the field of smart wear.

The invention discloses a 2: 17 type rare earth soft magnetic / Fe-based soft magnetic laminated composite material and a preparation method thereof. The method sequentially comprises the following steps: 1) screening 2: 17 type rare earth soft magnetic powder, performing insulation coating, mixing with polyurethane, and performing magnetic field orientation to obtain a thin ring green body; (2) Fe-based soft magnetic powder is sieved and mixed with polyurethane, and then a thin ring green body is obtained through magnetic field orientation; (3) alternately stacking the 2: 17 type rare earth soft magnetic thin ring green bodies and the Fe-based soft magnetic thin ring green bodies in the direction perpendicular to the plane of the thin ring green bodies; and 4) carrying out hot press molding on the laminated soft magnetic composite material. Based on the high-frequency characteristic of the 2: 17 type rare earth soft magnetic material and the high magnetic conductivity characteristic of the Fe-based soft magnetic material, collaborative optimization of the magnetic conductivity and the cut-off frequency is achieved within the ultra-wideband range from MHz to GHz, the problem that the magnetic conductivity of a traditional soft magnetic composite material is attenuated along with the frequency is effectively solved, high-frequency loss is greatly reduced, and the service life of the soft magnetic composite material is prolonged. And a solution is provided for high-frequency soft magnetic components (such as inductors and transformers) with high magnetic performance and low power consumption.

The utility model relates to the technical field of supporting materials, in particular to a composite material, a supporting plate and electronic equipment, and the composite material comprises at least one first reinforcing fiber layer, at least one second reinforcing fiber layer and a mesophase pitch-based carbon fiber layer arranged between the first reinforcing fiber layer and the second reinforcing fiber layer; wherein the first reinforcing fiber layer is an acrylonitrile-based carbon fiber layer or a pitch-based carbon fiber layer, and the second reinforcing fiber layer is an acrylonitrile-based carbon fiber layer or a pitch-based carbon fiber layer. According to the laminated composite material provided by the invention, the two sides of the high-rigidity mesophase pitch-based carbon fiber layer are respectively connected with the first reinforcing fiber layer and the second reinforcing fiber layer which have high rigidity, so that the thickness and the mass of the composite material can be reduced to meet the light and thin requirements; the composite material also has good heat conduction performance and high rigidity performance.

The invention relates to the field of polymer composite materials and functional films, and provides a cast film for a lithium ion battery, which is characterized in that the cast film is of a laminated composite structure, and the laminated composite structure comprises a support layer and an interface functional layer; the supporting layer comprises polymer fibers and boron nitride nanosheets which are dispersed in a three-dimensional network of the polymer fibers in a highly oriented manner; wherein the included angle between the plane normal direction of the boron nitride nanosheet and the thickness direction of the cast film is less than 30 degrees; the interface functional layer comprises a hyperbranched polymer matrix and LLZO nanowires which are distributed in the hyperbranched polymer matrix in a gradient manner; the surface, deviating from the supporting layer, of the interface functional layer is grafted with a zwitterionic polymer brush through chemical bonding; wherein the surface density of the LLZO nanowire is gradually reduced from the surface, grafted with the zwitterionic polymer brush, of the interface functional layer to the direction of an interface combined with the supporting layer; the cast film has good electrochemical performance, interface stability and safety performance.

The invention provides an MAX phase / alumina layered composite ceramic and an in-situ synthesis preparation method thereof, and the method comprises the following steps: respectively preparing an alumina matrix layer and an MAX phase interface layer through a tape casting method, then alternately laminating the alumina matrix layer and the MAX phase interface layer, and finally carrying out hot pressed sintering to obtain a layered composite ceramic product. According to the invention, the layered composite ceramic which takes aluminum oxide as a matrix and MAX-phase ceramic as an interlayer is prepared through an in-situ synthesis technology, so that the effects of great toughening, strength increase without reduction and high damage tolerance are realized, and the fracture mode is converted from brittle fracture of aluminum oxide ceramic to safe stepped fracture. The strength and toughness of the aluminum oxide ceramic are successfully balanced and synergistically improved, and the industrial problem that strength and toughness cannot be both considered in a traditional aluminum oxide ceramic toughening technology is solved.

The present application is suitable for the technical field of composite materials, and provides a laminated composite material toughened intermediate layer and a preparation method thereof.The preparation method comprises the following steps: using a wet non-woven material processing method to obtain an aramid short fiber wet-laid non-woven felt; then activating the surface of the aramid fiber by hydrofluoric acid etching; grafting soluble polyether ether ketone resin with active end groups on the surface of the aramid fiber, while realizing the impregnation of the aramid fiber; and making the polyether ether ketone resin grafted on the surface of the aramid fiber crystallize again through an acidification reduction reaction.The present application regulates the interface bonding performance of the aramid toughened intermediate layer in the laminated composite material, while keeping the original crystallinity of the polyether ether ketone resin, can effectively improve the interlaminar toughness of the carbon fiber reinforced polyether ether ketone composite laminated plate, can significantly reduce the possibility of interlaminar cracking, provides a new scheme for the interlaminar toughening of this kind of material, and has potential application prospects in the field of special materials for aerospace, etc.

The invention relates to a laminated composite covering (1) for protecting a structure (100) of an aircraft against fire and heat propagation, comprising a flame retardant layer (2) comprising an intumescent polymeric material chosen from the group of intumescent materials capable of expanding under the effect of heat from 180°C, and at least one protective layer of an inorganic material retarding the intumescent reaction of the flame retardant layer (2), the retardant material being chosen from the group of elastomers. Figure to be published with the abstract: Fig. 1

The utility model relates to the technical field of energy storage medium production equipment, and provides a solid-state cell-free energy storage power supply continuous rolling device which comprises a rack; the diaphragm roll is rotationally arranged on the rack and is used for providing a battery diaphragm; the at least two extrusion roller groups I are rotationally arranged on the rack and are respectively used for extruding the two electrode raw materials and outputting two corresponding electrode bands, and the two electrode bands are respectively positioned on two sides of the battery diaphragm; the at least two rolling belts are arranged relative to the rack in a circulating transmission mode, the rolling belts are arranged on the side, away from the battery diaphragm, of the electrode belt, and the rolling belts abut against the electrode belt; according to the technical scheme, the problem that the reject ratio of products is increased due to the phenomena of glue failure, layering and the like of the products when three intermediate products are not laminated and compounded in place in the prior art is solved.

The invention discloses a Ti / Al alloy laminated composite board and a preparation method thereof, and belongs to the technical field of titanium-aluminum alloy powder metallurgy. The preparation method comprises the following steps: (1) pre-pressing: alternately and uniformly laying aluminum powder and sponge titanium powder to form an aluminum powder layer and a sponge titanium powder layer, and compacting every time the laying of one layer of powder is completed to obtain a layered powder blank; (2) carrying out two-stage cold isostatic pressing treatment on the layered powder blank to obtain a composite board blank; and (3) carrying out multi-pass hot rolling on the composite board blank under the protection of inert atmosphere to obtain the Ti / Al alloy laminated composite board. Through the three-stage process of pre-pressing, two-stage cold isostatic pressing and controlled hot rolling, a wavy interlocking structure is formed, the synergistic effect is effectively utilized, the energy absorption capacity, the interface bearing capacity and the anti-shearing performance of the composite board are improved, grains are effectively refined, the harmful phase change probability is reduced, the interlayer interface bonding quality is improved, and the service life of the composite board is prolonged. Therefore, the room-temperature plasticity and fracture toughness of the composite board are optimized.

An interlayer for a laminated composite is disclosed. The interlayer of the present invention includes a polymer resin composition and an interlayer thickness and a plurality of deformable, visible, light-reflecting body precursors that deform or are capable of deformation to form cupped, visible, light-reflecting bodies when said interlayer is laminated between first and second transparent substrates to form a laminated composite glazing. An interlayer component sheet including a substrate and deformable, visible, light-reflecting body precursors; a laminated composite glazing including a plurality of cupped, visible, light-reflecting bodies; and methods for forming a laminated composite glazing are also described.

The invention relates to the technical field of waterproof coiled material laying, in particular to a roof structure for laying thermoplastic polyolefin waterproof coiled materials and a laying method thereof.The roof structure comprises a roof structure layer and further comprises a leveling layer arranged on the roof structure layer; the waterproof roll layer is arranged on the leveling layer, and the waterproof roll layer is a laminated composite material and comprises a thermoplastic polyolefin surface layer, a reinforcing layer and an asphalt self-adhesion bottom layer; wherein the reinforcing layer is made of one of a polyester base, glass fiber gridding cloth or polypropylene fiber cloth. According to the waterproof coiled material, the waterproof coiled material layer formed by compounding the thermoplastic polyolefin surface layer, the reinforcing layer and the asphalt self-adhesion bottom layer is adopted, advantage complementation of properties of different materials is achieved, and the thermoplastic polyolefin surface layer endows the coiled material with excellent weather resistance, chemical corrosion resistance and reflective insulation effect; the reinforcing layer improves the overall mechanical strength, tear resistance and dimensional stability of the coiled material.

The application discloses a kind of laminated composite intercalation repair methods, belong to laminated composite maintenance technical field.The application uses the way of multilayer intercalation reinforcement patch, significantly increase the bonding area of patch and original laminated laminated composite material, can effectively improve the bonding strength of repair area, so that repair area will not become laminated laminated composite material / member dangerous area;The bonding surface is composed of multiple planes, and adjacent bonding surfaces bear tensile or shear load respectively, and after debonding or damage of a certain bonding surface, the crack will not spread to other bonding surfaces, significantly enhance the damage tolerance of repair bonding area, and further improve the mechanical properties of repair material / member.

The invention discloses a polyvinyl chloride composite board pressing machine for constructional engineering, and relates to the technical field of composite board pressing, the polyvinyl chloride composite board pressing machine comprises a pressing base, a portal frame is fixedly connected to the corner of the upper surface of the pressing base, and an extrusion plate is connected to the inner side of the portal frame in a nested manner; a hydraulic machine is fixedly connected between the upper surface of the extrusion plate and the inner side of the upper surface of the portal frame, the telescopic rod is fixedly connected to the inner side of the pressing base, and a containing plate is fixedly connected to the upper end of the telescopic rod. According to the polyvinyl chloride composite board pressing machine for constructional engineering, after cutting is completed, a worker can pull a handle outwards, a toothed plate is driven by a pull plate to move in a limited mode along the interior of a pressing base, in the moving process of the toothed plate, a gear meshed with the toothed plate can be driven to rotate synchronously, a twisted rod is driven by the gear to rotate, and the twisted rod is driven to rotate; and at the moment, the sleeve rod synchronously drives the placing plate to move upwards, so that the placing plate drives the laminated composite board to move upwards and be ejected out, and a worker can conveniently take the laminated board.

Disclosed herein is a composite material (1) comprising a polymer matrix (2) and fibres (4) arranged in said polymer matrix (2), wherein: - the polymer matrix (2) comprises a polyphenol in an amount equal to or greater than 15% by weight with respect to the weight of the polymer matrix (2), the fibres (4) have aa tensile modulus of elasticity, measured according to ASTM C1557, greater than 50 GPa, and are present in an amount equal to or greater than 80% by weight with respect to the weight of the polymer matrix (2).

The application provides a preparation method of a laminated composite material and the laminated composite material, and belongs to the technical field of composite materials, and comprises the following steps: stacking an annealed first plate, a second plate and a third plate to form a minimum unit, the second plate is located between the first plate and the third plate; the tensile strength of the second plate is 150-300 MPa; the thickness ratio of the first plate, the second plate and the third plate satisfies 20:(1-2):(10-15), and the thickness of the second plate is 0.05-0.80 mm; the minimum unit is rolled, and the reduction of the first pass rolling is 50%-75%. High-conductivity copper is introduced as an intermediate layer, through the crystal structure, the tensile strength of the second plate, the thickness ratio of the first plate to the third plate, and in combination with the subsequent rolling process, the first plate, the second plate and the third plate realize the matching of strength and plasticity, and the interface appears a deep corrugated structure.

The application discloses a graphene and diamond reinforced copper-based laminated composite material and a preparation method thereof. The composite material is composed of surface-modified nickel-plated graphene 0.5-2.5 wt.%, core-shell structure nickel-plated diamond 3-6 wt.% and the balance of copper sheet, with a total of 100 wt.%. The surface-modified graphene is modified graphene using a rutin solution. The surface-modified nickel-plated graphene and the surface nickel-plated diamond are prepared by a chemical plating method. The core-shell structure nickel-plated diamond is realized by ball milling. The application forms a close cross-interlocking bond between the metal matrix and the reinforcing phase, so that the obtained composite material is more compact. The core-shell structure reinforcing phase enhances the comprehensive performance of the composite material by providing its own excellent performance and prolonging the crack path. Finally, the comprehensive performance of the laminated composite material is improved.