Preparation device of high-bonding-force graphite material

Abstract

The utility model relates to a kind of preparation devices of high bonding force graphite material, including the preparation mould of being composed of upper die holder and lower die holder, the upper end of upper die holder is provided with pressure loading assembly, the upper end surface of upper die holder is opened with feed cavity, feed cavity is used to fill metal raw material, the bottom of feed cavity is provided with flow guide component, flow guide component is used to guide molten metal to downward uniform penetration, the upper end surface of lower die holder is opened with graphite groove;The utility model is provided with pressure loading assembly in the upper die holder top, controllable external pressure is applied in the process of metal melting, the weight of press punch is additionally applied by compression spring, the penetration driving force of molten metal into porous graphite matrix is enhanced, so that permeability is better, the bonding force of graphite material is guaranteed, the position of connecting piece can be adjusted by rotating pretightening bolt, so as to change the compression amount of compression spring, the applied external force is adjusted, and functionality is improved.

Description

Technical Field

[0001] This utility model relates to the field of graphite material preparation technology, specifically to a device for preparing high-bonding graphite materials. Background Technology

[0002] Graphite materials are widely used in aerospace, electronic devices, new energy batteries and high-temperature structural components due to their excellent electrical conductivity, thermal conductivity, high temperature resistance and chemical stability. However, pure graphite materials have problems such as low mechanical strength, high brittleness and difficulty in direct connection with other metal parts. In order to improve its comprehensive performance, it is often necessary to combine it with metals or alloys to form graphite-metal composite materials. In the preparation of graphite-metal composite materials, the metal melting infiltration method is widely used because of its simple process and high bonding strength.

[0003] Existing apparatuses for preparing high-bonding graphite materials require placing graphite parts into a mold and allowing the metal to penetrate the graphite through melting. However, the metal melt has uneven flow in the mold, which can easily lead to local accumulation or insufficient penetration. Furthermore, after high temperatures, the mold and the composite material adhere severely, making demolding difficult and often resulting in sample cracking or surface damage. Based on this, we propose an apparatus for preparing high-bonding graphite materials to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a device for preparing high-bonding graphite materials. By increasing external pressure, the molten metal can better penetrate into the graphite part, solving the problems of uneven flow of the molten metal in the mold during preparation, which easily leads to local accumulation or insufficient penetration. Furthermore, the existing high-bonding graphite material preparation devices often suffer from severe adhesion between the mold and the composite material after high temperature, making demolding difficult and often resulting in sample cracking or surface damage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a preparation device for high-bonding-strength graphite material, comprising a preparation mold composed of an upper mold base and a lower mold base. A pressure loading component is provided at the upper end of the upper mold base, and a feeding cavity is opened on the upper end face of the upper mold base for filling with metal raw materials. A flow guiding component is provided at the bottom of the feeding cavity for guiding molten metal to penetrate downwards uniformly. A graphite groove is opened on the upper end face of the lower mold base for placing porous graphite preforms. An exhaust groove is opened at the bottom of the inner side of the graphite groove for discharging gas generated during the melting and infiltration process. A push rod assembly is provided at the bottom of the graphite groove for ejecting the composite product from the graphite groove. A driving component is provided at the bottom of the interior of the lower mold base for driving the push rod assembly to move upwards.

[0006] Furthermore, the pressure loading assembly includes a pressure punch slidably mounted on the top of the feed chamber, a fixed bracket fixedly mounted on the upper end of the lower die base, a preload bolt threaded onto the fixed bracket, a connecting piece fixedly mounted on the lower end of the preload bolt, and a compression spring fixedly mounted on the lower end of the connecting piece. The lower end of the pressure punch is in contact with the metal material, and the upper end of the pressure punch is fixedly connected to the compression spring. The compression spring is used to provide initial pressing force so that the metal is continuously compressed during the heating and softening process. When the preload bolt rotates, it pushes the connecting piece to move up and down to adjust the magnitude of the initial pressing force.

[0007] It is important to note that the pressure punch has a sliding structure, with its outer diameter slightly smaller than the inner diameter of the feed chamber (a clearance of 0.1–0.3 mm is recommended). This ensures free up-and-down movement without jamming, while effectively transmitting pressure to the metal material and preventing excessive lateral friction from affecting the uniformity of pressure application. The compression spring is adjusted in conjunction with the pre-tightening bolt via a connecting plate. Rotating the pre-tightening bolt moves the connecting plate up and down, thereby changing the initial compression of the spring and achieving a pressure preset within the range of 5–20 MPa. Higher pressure is required for high-viscosity copper, while the pressure can be appropriately reduced for low-melting-point aluminum-silicon alloys to prevent excessive compression.

[0008] Furthermore, a lateral limiting ring is provided between the upper mold base and the lower mold base. The lateral limiting ring is sleeved around the graphite preform to prevent the graphite part from deforming or the molten metal from overflowing laterally at high temperatures. The upper mold base, the lower mold base and the lateral limiting ring are all made of boron nitride ceramic material.

[0009] Furthermore, the flow guiding component includes multiple through-flow guiding channels opened at the lower end of the upper mold base. The flow guiding channels are distributed in an array, and the cross-sectional area of ​​the flow guiding channels gradually decreases from top to bottom. The outlet end of the flow guiding channel is provided with a micro-pore array with a pore diameter of 0.3 to 1.5 mm, which is used to adjust the melt flow rate and avoid impact damage to the graphite surface.

[0010] Furthermore, the exhaust groove is a structure of multiple parallel microgrooves, with one end of the exhaust groove connected to the bottom of the graphite groove, and a width of 0.2 to 0.5 mm and a depth of 0.1 to 0.3 mm.

[0011] Furthermore, the push rod assembly includes a push rod through hole opened at the bottom of the graphite groove, a push rod body slidably installed in the push rod through hole, and a top block fixedly installed on the top of the push rod body. The top block is used to uniformly apply force to push out the composite material. The push rod body is a high-temperature alloy rod with a temperature resistance of not less than 1200℃.

[0012] Furthermore, the drive assembly includes a displacement cavity formed inside the lower mold base, a drive seat slidably installed in the displacement cavity, and a lead screw set in the displacement cavity. The drive seat is threadedly connected to the lead screw, one end of the lead screw is rotatably connected to the inner wall of the displacement cavity, and the other end of the lead screw is fixedly connected to a bolt. The bolt passes through the outer wall of the lower mold base and is rotatably connected to it. When the bolt is rotated, it drives the lead screw to rotate, thereby pushing the drive seat to move laterally.

[0013] Furthermore, the push rod through hole is connected to the displacement cavity, the upper end face of the drive seat has a wave-like structure, and the lower end of the push rod body is a spherical end. The upper end face of the drive seat abuts against the bottom end of the push rod body. When the drive seat moves, it pushes the push rod body and the top block at its top to rise through mechanical transmission, thus completing the ejection action of the composite material.

[0014] It should be noted that the spherical end at the bottom of the ejector pin body and the wave surface of the drive seat are in point or line contact, which reduces frictional resistance, allows for a certain degree of angular deviation compensation, adapts to assembly errors caused by high temperature deformation, and improves demolding reliability.

[0015] Furthermore, the contact surfaces of the upper and lower mold bases are provided with an anti-adhesion coating (the coating is any one of boron nitride (BN), diamond-like carbon (DLC), or calcium fluoride (CaF2), with a thickness of 20-60 μm), and the contact surfaces of the upper and lower mold bases are also provided with a corrugated interface structure.

[0016] It is important to note that the entire device can be used in a vacuum or inert atmosphere furnace, with a maximum operating temperature of 1300℃. It is suitable for melting and infiltration processes of various metal systems. The mold material is made of boron nitride ceramic (BN) not only because of its high temperature resistance and high mechanical strength, but more importantly because it exhibits extremely low wettability to most metal melts (especially Cu and Ag), which fundamentally eliminates the "welding" phenomenon and is the core material guarantee for successful demolding.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. The apparatus for preparing high-bonding graphite material uses a pressure loading component on the top of the upper mold base to apply controllable external pressure during the metal melting process. The weight of the pressure punch, plus the pressing force applied by the compression spring, enhances the driving force for the molten metal to penetrate into the porous graphite matrix, thereby improving permeability and ensuring the bonding strength of the graphite material. At the same time, the position of the connecting piece can be adjusted by rotating the pre-tightening bolt, thereby changing the compression amount of the compression spring and adjusting the applied external force, thus improving functionality. 2. The preparation device for this high-bonding graphite material adopts an integrated ejector rod demolding structure with a horizontally driven drive component, which realizes safe and non-destructive automatic demolding of the composite material after cooling. This avoids damage such as sample cracking and edge chipping caused by traditional knocking demolding, and improves product yield and operational safety. At the same time, the drive mechanism is located inside the lower mold base and is driven by the connecting bolts after cooling, making it suitable for standard high-temperature furnace environments. 3. The preparation device for this high-bonding graphite material uses an array of flow channels with gradually decreasing cross-sectional area and a micro-pore array design at the outlet end. This enables graded and stable flow and uniform distribution of molten metal, preventing high-speed liquid flow from impacting and damaging the graphite preform structure, ensuring synchronous penetration of metal across the entire contact surface, and improving composite uniformity. 4. The preparation device for this high-bonding graphite material has an exhaust groove connected to the bottom of the graphite groove, which can promptly remove closed air bubbles and volatiles during the melting and infiltration process, reduce the formation of internal defects, and improve the purity and mechanical property stability of the material. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model. Figure 2 The diagram shown is a schematic representation of the internal structure of this utility model. Figure 3 The diagram shown is a schematic representation of the internal structure of the lower mold base of this utility model. Figure 4 The diagram shown is a schematic of the lower mold base structure of this utility model; Figure 5 The diagram shown is a schematic of the drive seat structure of this utility model; Figure 6 The diagram shown is a schematic of the upper mold base structure of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Upper mold base; 2. Lower mold base; 201. Displacement cavity; 202. Drive base; 203. Lead screw; 204. Bolt; 3. Feed cavity; 301. Guide channel; 4. Graphite groove; 401. Ejector rod through hole; 402. Ejector rod body; 403. Ejector block; 5. Venting groove; 6. Pressurizing punch; 7. Fixing frame; 8. Preload bolt; 9. Connecting piece; 10. Compression spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-6 This embodiment of a high-bonding-strength graphite material preparation apparatus includes a preparation mold composed of an upper mold base 1 and a lower mold base 2. A pressure loading component is provided at the upper end of the upper mold base 1, and a feeding cavity 3 is opened on the upper end face of the upper mold base 1. The feeding cavity 3 is used to fill metal raw materials. A flow guiding component is provided at the bottom of the feeding cavity 3 to guide the molten metal to penetrate downwards uniformly. A graphite groove 4 is opened on the upper end face of the lower mold base 2 to place a porous graphite preform. An exhaust groove 5 is opened at the bottom of the inner side of the graphite groove 4. The exhaust groove 5 has a structure of multiple parallel microgrooves. One end of the exhaust groove 5 is connected to the bottom of the graphite groove 4 and is used to discharge the gas generated during the melting and infiltration process. A push rod assembly is provided at the bottom of the graphite groove 4 to push the composite product out of the graphite groove 4. A driving component is provided at the bottom of the interior of the lower mold base 2 to drive the push rod assembly to move upwards.

[0022] In this embodiment, a lateral limiting ring is provided between the upper mold base 1 and the lower mold base 2. The lateral limiting ring is sleeved around the graphite preform to prevent the graphite part from deforming or the molten metal from overflowing laterally at high temperatures. The upper mold base 1, the lower mold base 2 and the lateral limiting ring are all made of boron nitride ceramic material, which has excellent high temperature resistance (can be used for a long time in an environment of 1300℃), low coefficient of thermal expansion and non-wetting characteristics for common molten metals such as copper and silver. It can effectively avoid high temperature adhesion and thermal stress cracking problems. The contact surface between the upper mold base 1 and the lower mold base 2 is provided with an anti-adhesion coating, preferably a boron nitride (BN) spray coating with a thickness of 30-50μm. The contact surface between the upper mold base 1 and the lower mold base 2 is also provided with a corrugated interface structure (with alternating peaks and troughs, and a depth of 0.2-0.5mm).

[0023] It should be noted that it achieves the dual guarantee of non-stick at high temperatures and non-stick when cooling, making it particularly suitable for working conditions with multiple cycles, significantly extending the mold life, and ensuring the safety and repeatability of each demolding operation.

[0024] Please see Figure 1 , Figure 2In this embodiment, the pressure loading assembly includes a pressure punch 6 slidably mounted on the top of the feed chamber 3, a fixing frame 7 fixedly mounted on the upper end of the lower die base 2, a pre-tightening bolt 8 threaded onto the fixing frame 7, a connecting piece 9 fixedly mounted on the lower end of the pre-tightening bolt 8, and a compression spring 10 fixedly mounted on the lower end of the connecting piece 9. The lower end of the pressure punch 6 is in contact with the metal raw material, and the upper end of the pressure punch 6 is fixedly connected to the compression spring 10. The compression spring 10 is used to provide initial pressing force so that the metal is continuously pressurized during the heating and softening process. When the pre-tightening bolt 8 rotates, it pushes the connecting piece 9 to move up and down, adjusting the magnitude of the initial pressing force. During the heating process, pressure is continuously applied to the metal raw material so that it remains under pressure during the softening and melting stages, avoiding the formation of cavities or density gradients.

[0025] It should be noted that the outer diameter of the pressure punch 6 is slightly smaller than the inner diameter of the feed chamber 3, and the gap is controlled between 0.1 and 0.3 mm. This ensures free sliding while preventing molten metal from overflowing from the gap. The material used is molybdenum or boron nitride ceramic, which has good high-temperature strength and corrosion resistance, ensuring stable operation throughout the entire heating-pressurizing-cooling cycle. In addition, the fixing frame 7 adopts a split structure for easy disassembly and maintenance. The head of the pre-tightening bolt 8 is marked with scale, which, together with the torque wrench, allows for quantitative adjustment of the pressure, improving process consistency.

[0026] Please see Figure 2 , Figure 4 In this embodiment, the flow guiding component includes a plurality of through flow guiding channels 301 opened at the lower end of the upper mold base 1. The flow guiding channels 301 are arranged in an array, and the cross-sectional area of ​​the flow guiding channels 301 gradually decreases from top to bottom. The outlet end of the flow guiding channel 301 is provided with a micro-hole array, and the edges of the micro-holes are rounded to reduce flow resistance and prevent turbulence from generating bubbles.

[0027] It should be noted that the flow channel 301 and the micropore array together constitute a "hierarchical flow guidance system", which simulates the gate layout concept in industrial injection molding and significantly improves the spatial distribution uniformity of the metal melt, making it particularly suitable for composite molding of large-size or multi-layer graphite parts.

[0028] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 In this embodiment, the push rod assembly includes a push rod through hole 401 opened at the bottom of the graphite groove 4, a push rod body 402 slidably installed in the push rod through hole 401, and a top block 403 fixedly installed on the top of the push rod body 402. The top block 403 is used to uniformly apply force to push out the composite material, and the push rod body 402 is a high-temperature alloy rod.

[0029] In this embodiment, the driving assembly includes a displacement cavity 201 formed inside the lower mold base 2, a drive seat 202 slidably installed in the displacement cavity 201, and a lead screw 203 disposed in the displacement cavity 201. The drive seat 202 is threadedly connected to the lead screw 203. One end of the lead screw 203 is rotatably connected to the inner wall of the displacement cavity 201, and the other end of the lead screw 203 is fixedly connected to a bolt 204. The bolt 204 passes through the outer wall of the lower mold base 2 and is rotatably connected to it. When the bolt 204 is rotated... At time 4, the lead screw 203 is rotated, which in turn pushes the drive seat 202 to move laterally. The push rod through hole 401 is connected to the displacement cavity 201. The upper end surface of the drive seat 202 has a wave-like structure, and the lower end of the push rod body 402 is a spherical end. The upper end surface of the drive seat 202 abuts against the bottom end of the push rod body 402. When the drive seat 202 moves, it pushes the push rod body 402 and the top block 403 at its top end to rise through mechanical transmission, thus completing the ejection action of the composite material.

[0030] It should be noted that by rotating the drive bolt 204, the screw 203 rotates synchronously, thereby converting the horizontal rotational motion into a vertical lifting motion. When the drive seat 202 moves, its upper end face contacts the bottom of the top rod body 402, causing the top rod body 402 to rise and fall along the wave-like structure, which facilitates the top block 403 to push out the graphite part. At the same time, when the graphite part is put in, the top block 403 is pressed down to form a flush surface.

[0031] Another implementation of the drive component in this embodiment is as follows: the drive component can also adopt a pneumatic or hydraulic lifting structure to replace the above-mentioned mechanical transmission method, specifically: A vertically penetrating hydraulic or pneumatic cylinder cavity is set inside the lower mold base 2. A piston push rod is installed in the cavity, with its upper end connected to the bottom of the ejector rod body 402. The lower end of the piston push rod is connected to an external air source or hydraulic pump. Compressed air or hydraulic oil is introduced through pipelines. When the compounding process is completed and cooled to a safe temperature, the pneumatic / hydraulic system is activated to push the piston up, which in turn moves the ejector rod assembly upward as a whole, achieving rapid and automatic demolding. The response speed is fast and the ejection force is highly controllable, making it especially suitable for large-volume continuous operation scenarios.

[0032] The working principle of the above embodiments is as follows: First, the porous graphite preform is placed into the graphite groove 4 of the lower mold base 2, and a lateral limiting ring is fitted in for radial constraint. Then, metal powder or granules, such as electrolytic copper powder, are loaded into the feeding chamber 3 of the upper mold base 1. Subsequently, the upper mold base 1 and the lower mold base 2 are joined together and placed in a vacuum or inert atmosphere furnace, and the heating program is started. The temperature rises above the metal melting point, such as 1080℃ for Cu. The metal begins to soften and gradually melts. At this time, the compression spring 10 in the pressure loading assembly continuously applies downward pressure through the pressure punch 6, pushing the molten metal through the guide channel 301 and the micropore array into the furnace. The graphite pores, under pressure assistance, achieve rapid, uniform, and deep penetration. At the same time, the venting groove 5 promptly discharges the sealed gas, preventing air bubbles from causing internal defects. After a period of heat preservation, the heating is turned off, and the temperature is programmed to drop to a safe temperature of <300℃. After cooling, the bolt 204 is rotated manually or automatically, driving the lead screw 203 to rotate, causing the drive seat 202 to move laterally. Its wavy upper surface pushes the bottom spherical end of the ejector body 402 upward, finally pushing the composite graphite-metal material out smoothly from the top block 403, achieving non-destructive demolding.

[0033] It should be noted that the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for preparing a high-bonding-strength graphite material, comprising a preparation mold composed of an upper mold base (1) and a lower mold base (2), characterized in that: The upper end of the upper mold base (1) is provided with a pressure loading component. The upper end face of the upper mold base (1) is provided with a feeding cavity (3). The feeding cavity (3) is used to fill metal raw materials. The bottom of the feeding cavity (3) is provided with a flow guiding component. The flow guiding component is used to guide the molten metal to penetrate downwards evenly. The upper end face of the lower mold base (2) is provided with a graphite groove (4). The graphite groove (4) is used to place porous graphite preforms. The bottom of the inner side of the graphite groove (4) is provided with an exhaust groove (5). The exhaust groove (5) is used to discharge the gas generated during the melting and infiltration process. The bottom of the graphite groove (4) is provided with a push rod assembly. The push rod assembly is used to push the composite product out of the graphite groove (4). The bottom of the interior of the lower mold base (2) is provided with a driving component. The driving component is used to drive the push rod assembly to move upwards.

2. The apparatus for preparing a high-bonding graphite material according to claim 1, characterized in that: The pressure loading assembly includes a pressure punch (6) slidably mounted on the top of the feed chamber (3), a fixed bracket (7) fixedly mounted on the upper end of the lower die base (2), a preload bolt (8) threaded onto the fixed bracket (7), a connecting piece (9) fixedly mounted on the lower end of the preload bolt (8), and a compression spring (10) fixedly mounted on the lower end of the connecting piece (9). The lower end of the pressure punch (6) is in contact with the metal material, and the upper end of the pressure punch (6) is fixedly connected to the compression spring (10). The compression spring (10) is used to provide initial pressing force so that the metal is continuously pressed during the heating and softening process. When the preload bolt (8) rotates, it pushes the connecting piece (9) to move up and down to adjust the magnitude of the initial pressing force.

3. The apparatus for preparing a high-bonding graphite material according to claim 1, characterized in that: A lateral limiting ring is provided between the upper mold base (1) and the lower mold base (2). The lateral limiting ring is sleeved around the graphite preform to prevent the graphite part from deforming or the molten metal from overflowing laterally at high temperature. The upper mold base (1), the lower mold base (2) and the lateral limiting ring are all made of boron nitride ceramic material.

4. The apparatus for preparing a high-bonding graphite material according to claim 1, characterized in that: The flow guiding component includes multiple through flow guiding channels (301) opened at the lower end of the upper mold base (1). The flow guiding channels (301) are arranged in an array. The cross-sectional area of ​​the flow guiding channels (301) gradually decreases from top to bottom. The outlet end of the flow guiding channel (301) is provided with a micro-hole array.

5. The apparatus for preparing a high-bonding graphite material according to claim 1, characterized in that: The exhaust groove (5) is a structure of multiple parallel microgrooves, and one end of the exhaust groove (5) is connected to the bottom of the graphite groove (4).

6. The apparatus for preparing a high-bonding graphite material according to claim 1, characterized in that: The push rod assembly includes a push rod through hole (401) opened at the bottom of the graphite groove (4), a push rod body (402) slidably installed in the push rod through hole (401), and a top block (403) fixedly installed on the top of the push rod body (402). The top block (403) is used to uniformly apply force to push out the composite material. The push rod body (402) is a high temperature alloy rod.

7. The apparatus for preparing a high-bonding graphite material according to claim 6, characterized in that: The drive assembly includes a displacement cavity (201) opened inside the lower mold base (2), a drive seat (202) slidably installed in the displacement cavity (201), and a lead screw (203) set in the displacement cavity (201). The drive seat (202) is threadedly connected to the lead screw (203). One end of the lead screw (203) is rotatably connected to the inner wall of the displacement cavity (201), and the other end of the lead screw (203) is fixedly connected to a bolt (204). The bolt (204) passes through the outer wall of the lower mold base (2) and is rotatably connected to it. When the bolt (204) is rotated, the lead screw (203) is driven to rotate, thereby pushing the drive seat (202) to move laterally.

8. The apparatus for preparing a high-bonding graphite material according to claim 7, characterized in that: The push rod through hole (401) is connected to the displacement cavity (201). The upper end face of the drive seat (202) is a wave-shaped structure, and the lower end of the push rod body (402) is a spherical end. The upper end face of the drive seat (202) abuts against the bottom end of the push rod body (402). When the drive seat (202) moves, it pushes the push rod body (402) and its top block (403) to rise through mechanical transmission, thus completing the ejection action of the composite material.

9. The apparatus for preparing a high-bonding graphite material according to claim 1, characterized in that: The contact surfaces of the upper mold base (1) and the lower mold base (2) are provided with an anti-adhesion coating, and the contact surfaces of the upper mold base (1) and the lower mold base (2) are also provided with a corrugated interface structure.

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