207 results about "Laminated composites" patented technology

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 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.

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 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 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 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 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.

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.

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.

Disclosed are a polymer electrolyte membrane for fuel cells which has improved handling properties and mechanical strength by employing symmetric-type laminated composite films and a method for manufacturing the same.

The present application relates to the technical field of material testing, in particular to a sample and tool for testing Z-direction fatigue performance of laminated composite material, the sample is axisymmetric dumbbell-shaped, comprising a middle test section and two end holding ends, and the bonding interface is located in the test section; the diameter of the test section is 5-10 mm, and the diameter of the holding end is greater than or equal to 2 times the diameter of the test section; the thickness of the holding end is not less than 5 mm, and the axial distance from the inner side end face to the bonding interface is not less than 3 mm, so that the interface is ensured to be in a uniform stress area; the transition area is smoothly connected by a circular arc with a radius of greater than or equal to 2 mm. The present application can accurately and repeatedly characterize the Z-direction interface fatigue performance on a conventional fatigue testing machine, and solves the problem that the traditional composite material joint sample cannot test the real joint interface performance.

The present application relates to a kind of lamination composite type transverse front filter with backwashing function, including filter bottle, filter bottle is equipped with water inlet assembly and water outlet and blowdown assembly, filter bottle is equipped with lamination composite filter unit, including filter and backwashing subunit and lamination subunit, filter and backwashing subunit are inserted in lamination subunit, filter and backwashing subunit include independent filter function section and backwashing function section;Lamination subunit is equipped with raw water cavity between filter bottle, lamination subunit and filter function section are equipped with primary purified water cavity, filter function section is equipped with secondary purified water cavity inside, raw water cavity and primary purified water cavity are communicated by the filter hole of lamination subunit, primary purified water cavity and secondary purified water cavity are communicated by the filter hole of filter function section, secondary purified water cavity is communicated with water outlet port.The front filter structure is optimized, can backwash in situ, and washing effect is good, and can match the installation space of transverse.

The application discloses a preparation method of aluminum-magnesium laminated composite material based on chemical copper plating pretreatment and relates to the technical field of metal laminated composite material preparation. The preparation method of aluminum-magnesium laminated composite material based on chemical copper plating pretreatment is characterized in that copper is plated on both surfaces of a magnesium alloy substrate by a specific process chemical displacement, a thin copper layer with three-dimensional interconnected pores is prepared in situ, sufficient copper source is provided for the magnesium side interface without increasing the thickness of the intermediate copper foil, and the problem of "copper starvation" that copper elements unidirectionally diffuse to the aluminum alloy side and the magnesium side is depleted in the traditional process is solved. The porous structure forms a large number of atomic diffusion channels, effectively reduces the diffusion resistance of copper atoms, and enables the copper elements to synchronously and evenly diffuse to the aluminum and magnesium substrates, so that a continuous and stable gradient diffusion metallurgical bonding layer is formed on each interface.

The invention discloses a light Al / Al-graphene / Cu layered composite material and a preparation method thereof, and aims to solve the problems that brittle intermetallic compounds are easily formed at the interface of the Al / Cu layered material and the interface bonding strength is low. According to the light Al / Al-graphene / Cu layered material, a solvent and a binding agent are added into Al powder and graphene, mixed slurry is prepared into Al-graphene tape casting sheets, a laminated composite material is formed according to the sequence of Cu sheets / Al-graphene tape casting sheets / Al sheets / Al-graphene tape casting sheets / Cu sheets from top to bottom, the laminated composite material is subjected to cold isostatic pressing treatment and degumming treatment, and the light Al / Al-graphene / Cu layered material is obtained. And finally carrying out vacuum sintering treatment. Through the mutual synergistic effect of the Al powder and the graphene, the prepared layered material has the characteristics of light weight, good interface bonding and moderate strength, brittle intermetallic compounds at the interface are greatly reduced, and the conductivity of the layered material is improved.

A metal laminate composite includes a first layer comprising a copper-containing compound, a second layer selected from steel or stainless steel, and a third layer selected from copper or a copper alloy. The second layer constitutes from 7% to 25% by volume of the metal laminate composite. In some cases, the composite exhibits a yield strength of greater than 80 MPa.

A method for manufacturing a composite material for packaging and tableware is disclosed. The method comprises forming a sheet from a grain-based composition, either by puffing the composition between matrices in a puffing chamber or by extruding a plasticized composition through a die. The resulting sheet, which has a porous matrix, is then laminated on at least one side with a protective film. Lamination may be performed using hot, cold, or wet techniques. The final laminated composite sheet, having a sandwich-type structure, can be cooled, cut into blanks, and subsequently formed into various articles such as trays, plates, and containers.

The invention relates to a production method of a 625 / X65 / 625 double-sided nickel base alloy layered composite plate. The production method comprises the following steps: (1) selecting an assembly raw material; (2) polishing the surface to be contacted; (3) forming a 625 / X65 / 625 composite blank; (4) end face coping; (5) carrying out lap-joint seal welding and vacuumizing; (6) heating for the first time; (7) rolling for the first time; (8) heating for the second time; (9) carrying out a second round of rolling; and (10) trimming to obtain the 625 / X65 / 625 nickel base alloy layered composite plate with the target specification. According to the 625 / X65 / 625 double-sided nickel base alloy layered composite plate produced through the method, the synchronous deformation rate of base layer metal and composite layer metal is high, the plate shape is flat, the composite interface performance is high, stability is good, compared with a 625 alloy plate, the economic cost is obviously reduced, the production process is simple, and the method is suitable for industrial large-scale production of flat plates and rolled plates.

The application discloses a double-layer film structure OMD decorative composite film piece and a manufacturing method thereof. The composite film piece comprises, from bottom to top, an injection molding base material, a polyurethane adhesive layer, a PC decorative film layer, a high-transparency polyurethane adhesive layer and a protective film layer. A five-layer laminated composite structure is arranged, the bottom layer is an injection molding base material of PC or ABS, the PC decorative film is combined through the polyurethane adhesive layer, and the PMMA protective film is attached through the high-transparency polyurethane adhesive layer. The PC decorative film can bear various intaglio textures, and the decorative style is rich. The outer PMMA has good light transmission, is resistant to ultraviolet rays and has high surface hardness, can isolate water vapor and light, and makes up for the performance defects of the PC film. The two polyurethane adhesives respectively realize the close adhesion of the base material and the PC film, the PC film and the PMMA film, and the layers are not easy to be layered and bulged. The whole composite structure is suitable for the OMD vacuum pressure difference film coating process, considers the various appearance decorative effects and outdoor weather resistance and scratch resistance, and solves the defects that the traditional pure PC film is easy to age and scratch when used for out-of-mold decoration alone.

The invention discloses a forming method for reducing curing deformation of a composite material laminated board through non-isothermal curing. The forming method specifically comprises the following steps: step 1, determining a curing shrinkage generation area of a laminated composite material; step 2, constructing a first stage of a non-isothermal curing period, namely a rapid heating stage; step 3, constructing a second stage of the non-isothermal curing period, namely a slow heating stage; and step 4, constructing a third stage of the non-isothermal curing period, namely a cooling stage. The invention solves the problem that the existing curing molding process is easy to cause the deformation of the laminated composite material laminate.