52results about How to "Increase binding area" patented technology

The invention provides a gradient metal additive manufacturing method based on cross-scale collaborative interface strengthening. The implementation object of the additive manufacturing method is a heterogeneous interlayer interface of a gradient metal structure, corresponding cross-scale cooperative strengthening is jointly achieved based on bimetal macroscopic interface tooth-shaped meshing strengthening and microcosmic interface atom interaction diffusion strengthening, and the additive manufacturing method has the advantages of being high in reliability, wide in application system and convenient and fast to regulate and control. According to the specific means, a child-mother meshing structure is arranged on the two sides of the bimetallic interface for macroscopic strengthening, an atomic interaction diffusion layer with the specific thickness is formed on the bimetallic interface for microcosmic strengthening in combination with an additive process design, and therefore the macro-micro cross-scale cooperative strengthening effect of the heterogeneous interface is achieved. Based on the method, the heterogeneous metal structure interface can be effectively strengthened, the weak mechanical property area of the interface is eliminated, the method is particularly suitable for parts with severe and complex service loads, and the service life is prolonged.

The invention discloses a circuit board and a preparation method thereof. The preparation method comprises the steps that a circuit substrate is provided, the circuit substrate comprises a first surface and a second surface which are opposite in the first direction, a through groove is formed in the circuit substrate, and a first opening and a second opening are formed in the first surface and the second surface through the through groove respectively; a first heat dissipation block and a second heat dissipation block are provided, the first heat dissipation block comprises a first extension part and a first body part, the second heat dissipation block comprises a second extension part and a second body part, in the second direction, the width of the first extension part is larger than that of the first body part, and the width of the second extension part is larger than that of the second body part; respectively covering the first surface and the second surface with a first adhesive layer and a second adhesive layer; a first heat dissipation block is inserted into the through groove from the first opening, a second heat dissipation block is inserted into the through groove from the second opening, and then pressing is carried out. The first heat dissipation block and the second heat dissipation block can be prevented from being separated from the side wall of the through groove.

The invention discloses a high-strength waterproof and oil-proof green paper-based packaging material and a preparation method thereof. The high-strength water-proof and oil-proof green paper-based packaging material is obtained by coating a wet paper web with carboxylated wood nanocellulose and then carrying out hot pressing and drying, the wet paper web is obtained by mixing bamboo pulp, bagasse pulp and wood nanocellulose prepared by a mechanical method, dispersing the mixture in an aqueous solution, making paper with the wet paper web with the water content of 50-60%, and squeezing at normal temperature to remove water until the water content is 20-30%. The paper-based barrier material is prepared by using plants as raw materials and regulating and controlling the fiber paper-based structure through functional components of the plants, has the characteristics of high oil resistance, high tensile strength, good water resistance, greenness, safety and degradability, and is particularly suitable for the fields of food packaging, medical treatment and public health and the like.

The invention relates to the technical field of metal heat treatment, in particular to a process for realizing diffusion bonding of dissimilar materials through a powder metallurgy process, which comprises the following steps of: controlling the mechanical property, the dimensional accuracy, the surface appearance and the structural integrity of a formed blank through selection of alloy elements, regulation and control of component proportion and optimization of additive components and content; the wear-resistant material powder is pressed into a blank, then the sintering temperature, the sintering time, the sintering pressure and other parameters are used for control, blank forming is achieved, the bonding strength of the blank and parts is improved, a steel-based typical structural part with local high wear resistance is manufactured, the strength and wear resistance of the mechanical parts are greatly improved, and the service life of the mechanical parts is greatly prolonged. The dissimilar material connecting process is suitable for engineering forming design and preparation production of locally-reinforced wear-resistant structural parts such as mining machinery, oil and gas pipelines, ocean platforms and bridge structures.

The invention relates to the technical field of iron core production, in particular to a self-adhesive riveting-point-free iron core and a production process thereof, and the production process comprises the following steps: pre-determining the position of a silicon steel sheet on a steel strip with a self-adhesive coating; stamping the outer sides of the silicon steel sheets to form the silicon steel sheets and two frames; performing semi-shearing stamping on the joints between the silicon steel sheets and the frame to enable the silicon steel sheets to be punched out of the frame by a certain distance; shaping to enable the silicon steel sheets and the frame to be in the same plane; cutting off the steel belt to enable the silicon steel sheets and the frame to form independent sheet bodies; a plurality of sheet bodies are stacked together, buckling points are punched on the frame, and the sheet bodies are stacked and riveted into a whole through the buckling points; heating the plurality of sheet bodies to melt the self-adhesive coatings, cooling the sheet bodies, and curing the self-adhesive coatings to fix the plurality of stacked silicon steel sheets together; fixing the silicon steel sheets, and separating the frame from the silicon steel sheets to obtain iron core units; the multiple iron core units are arranged in the circumferential direction, the adjacent iron core units are connected in a clamped mode, and a complete iron core is formed.

The invention relates to the technical field of ceramic-metal composite materials, in particular to a preparation method of a ceramic copper-clad plate and the obtained ceramic copper-clad plate. The transition coating and the copper conductive coating are prepared through the high-speed electric arc spraying technology, compact and reliable combination between the ceramic substrate and the conductive copper layer is achieved, the copper conductive coating with the larger thickness can be conveniently prepared on the ceramic substrates of different sizes, and the method can be applied to an ultra-high-power IGBT module with the larger thickness requirement. And the fields of high-speed rails, high-power LEDs, electric automobiles, 5G communication modules and the like are provided. According to the method, the ceramic surface is coarsened preferably through a laser cleaning technology, so that the smooth surface of the ceramic substrate can form a coarsened surface with uniform concave-convex depth, oil stains and the like on the surface can be cleaned, the bonding area of the ceramic substrate and the transition coating can be increased, and mutual embedded strong interface bonding between the ceramic substrate and the transition coating is also facilitated; and the binding force between the two is improved.

The utility model discloses a kind of lead frame structures, lead frame unit is arranged to form the lead frame structure in six rows, left and right two columns, the lead frame unit includes: base island, including base island body and protruding setting in the front of base island body chip bearing area;Locking groove, be opened in the chip bearing area, and the locking groove is located at the edge position of the chip bearing area;Pin, bending connection in the side of the base island;Base island connecting rib, connect between two the base island of adjacent upper and lower;Wherein, the chip bearing area is rough surface. Solve the problem that the base island and chip of existing TO-252 lead frame are easy to delaminate.

The invention provides a preparation method of a copper-aluminum composite strip, and belongs to the technical field of metal composite material preparation. According to the method, the copper foil and the aluminum foil are rolled to be cylindrical, then the copper-aluminum composite sheet is formed, and after vacuum annealing, the copper-aluminum composite strip is obtained through multi-pass cold rolling. According to the method, the copper foil and the aluminum foil are mutually wound to form the cylinder, and then the strip is prepared through cold rolling, so that the bonding area between copper and aluminum is greatly increased, the problem of sliding between copper and aluminum layers is solved, meanwhile, complex process steps such as welding and pretreatment are avoided, and a new path is provided for developing the high-performance copper-aluminum composite strip. According to the method, more than 40 layers of alternately-distributed copper-aluminum composite strips can be obtained through one-time rolling, multiple times of overlapping are not needed, and compared with an existing method, the method is more convenient and simpler.

The utility model discloses a 3D uniform temperature plate with heat pipe connecting capillary ring, it includes lower cover, lower capillary structure layer, upper cover, upper capillary structure layer and heat pipe. The top surface of upper cover is provided with a plurality of mounting seats that are inverted funnel shape, the upper capillary structure layer is covered on each copper powder capillary ring of lower cover setting, and the upper capillary structure layer is formed with the upturned edge along the inner wall of mounting seat and extends upward, a plurality of heat pipes are correspondingly inserted in a plurality of mounting seats, and the heat pipe includes pipe body and pipe mouth, and the pipe mouth is attached and communicated with the mounting seat, and the heat pipe in the cavity of uniform temperature plate is formed with the capillary structure that extends from the pipe body to the pipe mouth. Among them, the heat pipe connecting capillary ring is still fixed in the mounting seat, the heat pipe connecting capillary ring is in abutment with the inner wall of pipe mouth, and the upturned edge is in abutment on the inner wall of mounting seat, which constitutes the stable connection of heat pipe and capillary structure in the cavity, and liquid medium can flow to the heat pipe connecting capillary ring under the guidance of the funnel-shaped contour of pipe mouth, and then return to the cavity through the upper capillary structure layer.

The utility model discloses a DFN2510 anti-layering frame, which comprises a DFN2510 frame and connecting ribs formed at the edge of the DFN2510 frame, a step structure is formed at the edge of the long side of the DFN2510 frame, one end of the step structure is connected with the edge of the hollow part on the DFN2510 frame, and the other end of the step structure extends to a connecting rib opening in the middle of the long side of the DFN2510 frame; the pair of step structures is symmetrically arranged on the two sides of the rib connecting opening, so that the rib connecting opening forms a narrowed rib connecting opening through the pair of step structures. The utility model relates to the technical field of semiconductor packaging, and can solve the problem that in the prior art, a DFN2510 frame and an insulating medium layer may have a layering defect during forming and cutting.

The application provides a conductive piece, a cover plate assembly and a battery cell. The conductive piece comprises a terminal and a pole; the terminal has a through hole and a riveting sink, the riveting sink is annularly arranged at one end of the through hole and communicates with the through hole, and a limiting block is arranged on the hole wall of the through hole; the pole comprises a first segment and a second segment connected with each other, the first segment is arranged in the through hole, one end of the first segment away from the second segment is outwardly protruded along the radial direction to form a riveting part, the riveting part is located in the riveting sink, and a limiting groove is arranged on the outer peripheral surface of the first segment; the second segment is in contact with the surface of the terminal away from the riveting sink, and the limiting block is located in the limiting groove. Through the above scheme, the relative rotation between the pole and the terminal can be limited, the bonding area between the pole and the terminal can be increased, and the connection reliability between the pole and the terminal can be improved.

The invention relates to the technical field of electric power fittings, and provides a wear-resistant composite material and a preparation method thereof, and a preparation method of a carbon steel fitting. The wear-resistant composite material comprises an iron-nickel-chromium-silicon-boron alloy and a mixture formed by micron-scale tungsten carbide powder particles and nano-scale tungsten carbide particles. The mixture accounts for 5.3-33.3% of the total volume of the wear-resistant composite material, and in the mixture, the micron-sized tungsten carbide particles account for 80-95% of the total mass, and the balance is the nano-sized tungsten carbide particles. Welding the primary wear-resistant layer on the surface of the fitting body by adopting a welding rod made of a wear-resistant composite material, performing precise hot pressing by adopting a mold to form a wear-resistant alloy layer, and polishing the wear-resistant alloy layer to obtain the carbon steel fitting. The carbon steel fitting is high in abrasion resistance, smooth and clean in surface and high in precision, the problems that an existing fitting loses efficacy due to abrasion and is short in service life are solved, and the maintenance cost of the fitting is reduced.

The invention provides an electrode preparation method, an electrode structure, an LED chip and a preparation method thereof, and relates to the technical field of semiconductor device preparation. The photoresist layer is controlled to warp by heating the temperature of a preparation environment, and then the prepared corresponding transition layer extends and fills the gap between the photoresist layer and the side wall of the laminated layer, so that the transition layer and the corresponding substrate are contacted and fixed, and the transition layer and the corresponding transparent conductive film layer are contacted and fixed. Therefore, the bonding area and the bonding strength between the electrode and the bearing structure thereof are improved, and the problem that the electrode is easy to fall off is solved. Moreover, according to the technical scheme provided by the invention, only the prepared first transition layer extends to cover the side wall of the first laminated layer, and the prepared first conductive layer does not need to cover the side wall of the first transition layer, so that the influence of the first electrode on the light-emitting brightness is reduced, and the high light-emitting brightness of the LED chip is ensured.

This invention discloses a welding method for fabricating a three-dimensional reinforced steel / aluminum welded joint on a steel surface, belonging to the field of dissimilar metal welding technology. This invention employs laser selective melting to fabricate a three-dimensional geometric structure on the surface of a steel substrate, forming a surface with a high aspect ratio and high specific surface area. By using brazing or fusion brazing methods, the bonding area between the liquid aluminum and the steel plate and the three-dimensional geometric structure is greatly increased, effectively suppressing crack propagation and achieving a dual enhancement of the strength and toughness of the steel / aluminum dissimilar metal joint. This method increases the specific surface area of ​​the steel / aluminum joint interface, improving sliding resistance under external loads, while the three-dimensional geometric structure itself bears some of the stress. Simultaneously, the three-dimensional geometric interface structure can alleviate joint interface stress and improve stress distribution, which is beneficial for obtaining a welded joint with good performance.

A self-starting reluctance motor comprises a rotor (10), a plurality of first slots (11), a plurality of second slots (12) and a plurality of third slots (13) penetrate through the rotor (10), the first slots (11) are perpendicular to a q axis, the second slots (12) and the third slots (13) are parallel to a d axis, and the second slots (12) and the third slots (13) sequentially extend to the two ends of the first slots (11); a plurality of magnetic conductive paths (102) are formed on the rotor (10) through magnetic barrier intervals of the first open slot (11), the second open slot (12) and the third open slot (13), a trapezoidal hole (14) penetrates through a q axis of the rotor (10) on the outer periphery, an electric conductor (15) is arranged in each of the third open slot (13) and the trapezoidal hole (14), the electric conductors (15) are annularly formed on the outer periphery of the rotor (10), and a plurality of magnetic conductive paths (102) are formed on the outer periphery of the rotor (10) through magnetic barrier intervals of the first open slot (11), the second open slot (12) and the third open slot (13). And the third open slot (13) and the trapezoidal hole (14) are cut to form notch grooves (131, 141) on the surface of the rotor, and a reinforced surface layer (10A) is arranged at the outer periphery of the rotor (10) in a surrounding manner and covers the notch grooves (131, 141), so that the self-starting capability and the motor efficiency can be both realized.

The utility model discloses a sound production unit, which comprises a voice coil and a framework, the framework is provided with a connecting surface used for being bonded with the voice coil, and the connecting surface is provided with a glue containing groove. In the sound production unit, the connecting surface, used for bonding the voice coil, of the framework is provided with the glue containing groove, and the glue containing groove can store glue and is favorable for increasing the bonding area of the voice coil and the framework, so that the bonding strength of the voice coil and the framework is improved, and the structural stability of the sound production unit is improved.

The utility model relates to an automobile rearview mirror, in particular to an electrochromic lens rearview mirror which comprises a first base material, a first plating layer, a second plating layer, a packaging frame, an electrochromic layer, a first conductive adhesive, a second conductive adhesive, at least one third plating layer, at least one fourth plating layer and a second base material. According to the utility model, the combination degree and the combination area of the fourth plating layer, the third plating layer and the outer periphery of the second substrate are increased, and the combination degree and the combination area of the second conductive adhesive, the second conductive connecting plate and the third plating layer are increased, so that the possibility of falling off is low, and the practicability and the durability are improved.

The present invention relates to the field of mortar technology, and specifically provides a sheet mortar, a mortar building material, a manufacturing method and an application method. The sheet mortar is flat as a whole, and comprises a mortar body, a support body and a tying body, wherein the mortar body comprises at least one of a planar mortar body, a plurality of strip mortar bodies and a plurality of point mortar bodies, the support body is arranged on the lower side of the mortar body, and the tying body is arranged on the upper side of the mortar body; in the above scheme, during the transportation and handling of the sheet mortar, the tying body can play a tying role on the upper side of the mortar body, limit its range of movement, so that the mortar body is not easy to crack, break or even fall off, thereby ensuring the product quality of the sheet mortar.

The utility model relates to a kind of composite lining for semi-autogenous mill and ball mill, including first lining body, second lining body and metal ceramic block, first lining body includes boss and transition zone;First lining body is used for semi-autogenous mill;Second lining body includes boss, transition zone and bottom plate, bottom plate is between two bosses;Second lining body is used for ball mill;Metal ceramic block is evenly distributed in the working surface of first lining body and second lining body;Metal ceramic block is provided with through hole, and metal liquid of boss, transition zone and bottom plate is fused into an organic whole with metal ceramic block by through hole.The utility model hole makes metal liquid infiltrate into the inside of metal ceramic block when casting, forms "metal anchor nail" structure after cooling and solidification, provides pullout resistance perpendicular to interface for metal ceramic block, effectively prevents metal ceramic block from transverse slip or drop under impact load.

The present invention discloses an anti-cracking automotive film capacitor, comprising: a shell, a capacitor element, an encapsulating epoxy resin, and an electrode lead-out terminal. An uneven frosted layer is provided on the inner wall of the shell, and an integrally formed trapezoidal reinforcing rib is provided, which can effectively improve the bonding ability between the shell and the encapsulating epoxy resin; the thermal expansion coefficient of the encapsulating epoxy resin is adjusted, and the electrode lead-out terminal is rounded, so that the encapsulating epoxy resin can still maintain a similar expansion degree as the shell and bonding with the electrode lead-out terminal in a rapidly changing temperature environment, and is not easy to crack, which significantly improves the sealing, reliability and service life of the product.

Disclosed are a welding jig, a battery cell produced using the welding jig, a battery pack including the battery cell, and a vehicle. According to one embodiment of the present invention, a welding jig is a welding jig for welding an electrode assembly and a current collector plate in a battery cell including an electrode assembly, a battery can accommodating the electrode assembly, and a current collector plate electrically connected to the electrode assembly, the current collector plate having a concave or convex pattern formed thereon, wherein the welding jig includes a mask portion having a convex or concave pattern formed corresponding to the concave or convex pattern of the current collector plate, and a welding hole for welding formed in the mask portion, and a support portion coupled to the mask portion and supporting the mask portion.

The utility model discloses a separation type facial mask bag which comprises a bag body, a liquid cavity and a facial mask cavity are arranged in the bag body, a first easy-to-uncover strip and a second easy-to-uncover strip are arranged on the two sides of the interior of the bag body between the liquid cavity and the facial mask cavity respectively, and the first easy-to-uncover strip and the second easy-to-uncover strip are attached in a separable mode through hot melt adhesive. The first easy-to-tear strip and the second easy-to-tear strip are provided with transverse embossments, and vertical embossments are arranged at the two ends of the transverse embossments and form locking edges. A clamping block is arranged on the top face of the first easy-to-tear strip, and a connecting groove matched with the clamping block is formed in the top face of the second easy-to-tear strip.

The invention relates to the technical field of iron core production, and in particular to a self-adhesive iron core without rivets and a production process thereof, comprising the following steps: pre-determining the position of a silicon steel sheet on a steel strip with a self-adhesive coating; punching the outer side of the silicon steel sheet to form a silicon steel sheet and two frames; performing half-shear punching on the connection between the silicon steel sheet and the frame to make the silicon steel sheet punch out a certain distance from the frame; shaping to make the silicon steel sheet and the frame be in the same plane; cutting the steel strip to make the silicon steel sheet and the frame form a separate sheet body; stacking a plurality of sheets together, punching out buckle points on the frame, and riveting them into a whole through the buckle points; heating the plurality of sheets to melt the self-adhesive coating, cooling the sheets to solidify the self-adhesive coating and fix the stacked plurality of silicon steel sheets together; fixing the silicon steel sheet, separating the frame from the silicon steel sheet, and obtaining an iron core unit; arranging a plurality of iron core sub-units along the circumferential direction, and clamping adjacent iron core units to form a complete iron core.

A method for laser welding of titanium / aluminum using coaxial airflow and pre-placed powder-assisted welding comprises the following steps: S1, machining a powder-filling groove on the surface of the aluminum alloy workpiece to be welded; S2, grinding and cleaning the surfaces of the titanium alloy workpiece to be welded and the machined aluminum alloy workpiece; S3, filling the powder-filling groove with pre-prepared metal powder, wherein the pre-prepared metal powder is pure Zr powder, pure V powder, or pure Nb powder; S4, lapping the aluminum alloy workpiece and titanium alloy workpiece to be welded with the titanium alloy workpiece on top and the aluminum alloy workpiece on the bottom to form a lap joint assembly, fixing it on a welding fixture, and covering it with a gas protective cover; S5, welding the assembly using a oscillating laser, during which protective gas is introduced through the gas pipe of the gas protective cover, and a pulsed coaxial protective gas flow is delivered to the welding position in real time through a coaxial gas delivery device. This invention solves the problem of difficulty in controlling the thickness of the brittle intermetallic compound layer during titanium-aluminum dissimilar metal welding.

The utility model discloses a silicon nitride ceramic heater, and relates to the technical field of ceramic heating. Comprising a ceramic laminated plate which is formed by laminating a plurality of ceramic layers, a heating circuit which is arranged between two adjacent ceramic layers and has a folded shape, a connecting circuit which is arranged between the adjacent heating circuit and the ceramic laminated plate, and a plurality of through holes which are uniformly distributed and penetrate through the heating circuit and the connecting circuit, the width of the connecting circuit is larger than that of the heating circuit, and the two ends of the connecting circuit extend to the two sides of the ceramic laminated plate; the two ends of the heating circuit extend to the two sides of the ceramic laminated plate. The heating circuit is arranged between the upper-layer ceramic laminated plate and the lower-layer ceramic laminated plate, voltage is applied to the heating circuit, flowing current is generated, electric energy is converted into heat energy, the heating circuit generates heat, and the heat is transmitted outwards through the upper-layer ceramic laminated plate and the lower-layer ceramic laminated plate. And enabling the surface of the ceramic laminated plate to reach a preset temperature.

The invention relates to the technical field of cable test detection, and discloses a cable test detection device, which comprises a base, two groups of fixed seats, a stroke measuring scale, an air cylinder, two groups of guide columns and a guide protection unit. According to the cable test detection device, the interception assembly is arranged, arc-shaped covers distributed in a circumferential array form a stable tubular protection area on the periphery of a stretching cable, it is ensured that linear motion of the stretching cable does not deflect through cooperation of a guide frame and a T-shaped block, and meanwhile movable arc-shaped plates are arranged in the arc-shaped covers; when the broken end of the cable and fragments rebound and fly under huge energy at the moment of breakage of the cable, the multi-direction arc-shaped cover structure and the movable arc-shaped plate on the opposite side jointly form a dynamic closed buffer ring, and splashing objects are intercepted and restrained in a limited protection space. The safety risk problems that an existing test device easily causes personal injury to operators, precision measurement equipment is damaged by collision and data accuracy is interfered are solved.

The present invention provides a connection strengthening structure of a thermosiphon heat dissipation device, comprising at least one shell, at least one connecting piece and at least one conduit. The shell is provided with at least one through hole connected to an inner chamber in the shell, one end of the conduit is connected to the inner chamber of the shell, and the connecting piece covers the connection between the shell and one end of the conduit, thereby increasing the connection area of ​​the conduit at the connection, improving the sealing performance of the connection and the strength to withstand saturated vapor pressure.

An embodiment of the present invention provides a display device, comprising: a substrate including a display area in which an image is displayed and a non-display area arranged outside the display area; a pad portion arranged in the non-display area on the substrate and including a plurality of pads separated by a predetermined distance; and a flexible printed circuit board coupled to the pad portion, wherein the flexible printed circuit board may include a plurality of leads, each of the plurality of pads may be coupled to each of the plurality of leads, each of the plurality of pads may include a contact pad electrode contacting each of the plurality of leads, and the contact pad electrode may include a dummy electrode surrounding an edge of a lower surface of each of the plurality of leads.

This utility model provides an FPC gold finger reinforcement device to prevent solder pad detachment, comprising: a substrate and multiple gold finger bodies, further comprising: a support structure, wherein the support structure is installed between each two adjacent solder pad bodies; a protective structure, wherein the protective structure is sleeved on one end of the substrate and the gold finger bodies; and an anti-bending structure, wherein the anti-bending structure is provided between the outermost two gold finger bodies, which are far apart from each other, and the protective structure. The FPC gold finger reinforcement device provided by this utility model increases the bonding area between the solder pad bodies and the substrate through support ribs and connecting rods, thereby increasing the bonding force between the two and preventing loosening or detachment during insertion and removal. The reinforcing plates on both sides distribute the bending force, preventing wrinkles or damage to the solder pad bodies and gold finger bodies after being stretched, which would affect the performance and subsequent use.

The invention discloses a multifunctional hydrophobic and oleophobic concrete curing film agent as well as a preparation method and application thereof. The preparation method comprises preparation of a first-layer film agent and preparation of a second-layer film agent, the preparation of the first-layer film agent comprises the following steps: adding a polymer monomer, nano silicon dioxide, polycarboxylate, lauryl sodium sulfate, polyvinyl alcohol, a water reducing agent and an anti-ultraviolet agent into water, stirring to form an emulsion, adding an initiator under the protection of nitrogen, and carrying out a polymerization reaction to obtain the first-layer film agent; the preparation of the second-layer film agent comprises the following steps: adding a hydrophobic and oleophobic material, a silane coupling agent and a catalyst into a solvent, and uniformly stirring to obtain the second-layer film agent; the hydrophobic and oleophobic material comprises polydimethylsiloxane and polyvinylidene fluoride. The concrete curing film agent prepared by the invention has good effects of filling, permeating and repairing gaps, has multiple functions of water reduction, water resistance, oil resistance, hydrophobicity, crack prevention and the like, is durable in use stability, and effectively expands the use universality of the curing film agent.