Device and method for rapidly preparing metal-based graphene composite material

Abstract

This invention relates to the field of graphene composite material technology, specifically to an apparatus and method for rapidly preparing metal-based graphene composite materials. The apparatus includes a crucible for melting metal and high-pressure injection pipes for spraying a dispersion into the crucible. Several high-pressure injection pipes are fixedly mounted on an adapter seat, which is sealed onto mounting notches on the periphery of the crucible's bottom. The mounting notches are evenly distributed around the crucible's periphery. An injection channel is provided on the adapter seat. In this invention, the injection channel horizontally injects the dispersion from the high-pressure injection pipes into the crucible along a direction inclined radially to the crucible. The dispersion sprayed through the injection channel creates a swirling flow of liquefied metal inside the crucible, preventing air from entering the crucible and eliminating the need for stirring rods of other materials. This ensures that the resulting composite material is not affected by impurities, thus guaranteeing the quality of the final product.

Description

Technical Field

[0001] This invention relates to the field of graphene composite materials technology, specifically to an apparatus and method for rapidly preparing metal-based graphene composite materials. Background Technology

[0002] Graphene is a two-dimensional layered material composed of carbon atoms. Due to its excellent optical, electrical, and mechanical properties, it has important applications in materials science, medicine, energy, and pharmaceuticals, and is considered a revolutionary new material of the 21st century. Each carbon atom in graphene is bonded to surrounding carbon atoms through strong σ bonds. These carbon-carbon bonds enable graphene sheets to achieve a tensile strength of up to 42 N / m and a Young's modulus of 0 TPa. Therefore, using graphene to prepare composite materials with excellent mechanical properties has enormous scientific and market value.

[0003] Common methods for preparing graphene include micromechanical exfoliation, epitaxial growth, chemical vapor deposition (CVD), silicon carbide sublimation, and graphene oxide reduction. Among these, CVD is currently one of the mainstream methods due to its ability to produce large graphene sheets, but it is relatively inefficient. Obtaining bulk metal-based graphene composites using traditional smelting and metallurgical methods is quite difficult.

[0004] Chinese patent CN114717431A discloses a type of graphene-metal matrix composite material and its rapid preparation method. Graphene and a swelling agent are uniformly mixed and added to an organic solvent, then ultrasonically treated to obtain a dispersion. The dispersion is then sprayed into molten metal or alloy using a high-pressure injector. This not only effectively introduces graphene into the metal matrix material, but more importantly, it greatly improves the dispersion effect of graphene, resulting in good interfacial contact between the graphene-metal or alloy composite materials.

[0005] However, in the existing technology, the nozzle of the high-pressure injector comes into contact with the molten metal. The residual molten metal adheres to the nozzle and will affect subsequent processing after cooling. In addition, the dispersion needs to be stirred after mixing with the molten metal to ensure uniform mixing. Common stirring rods have poor stirring effect in molten metal and are prone to producing impurities. Summary of the Invention

[0006] To address the aforementioned issues, it is necessary to provide an apparatus and preparation method for the rapid preparation of metal-based graphene composite materials, addressing the problems existing in the technology.

[0007] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0008] An apparatus for rapidly preparing metal-based graphene composite materials includes a crucible for melting metal and high-pressure injection tubes for spraying a dispersion into the crucible. Several high-pressure injection tubes are fixedly mounted on an adapter seat, which is hermetically mounted on mounting notches located on the periphery of the crucible's bottom. The mounting notches are evenly distributed around the crucible's periphery. An injection channel is provided on the adapter seat, which horizontally injects the dispersion from the high-pressure injection tubes into the crucible along a direction inclined radially to the crucible. The dispersion sprayed through the injection channel creates a swirling current in the liquefied metal inside the crucible.

[0009] Preferably, the adapter includes an outer seat and an inner plug. The inner plug is inserted into the installation notch of the crucible and seals the installation notch. The inner plug is provided with a sliding cavity extending radially along the crucible. The outer seat is provided with a spray pipe connection port communicating with the sliding cavity. A first slider and a second slider that move synchronously are slidably installed in the sliding cavity. The first slider is closer to the inside of the crucible, and the second slider is closer to the spray pipe connection port. In the first slider with the spray channel inclined, the two ends of the spray channel are respectively located on the side where the first slider and the sliding cavity are in contact. The first slider enters the inside of the crucible radially so that the output end of the first slider enters the inside of the crucible.

[0010] Preferably, the inner block is provided with a first connecting channel on one side of the sliding cavity, and the two ends of the first connecting channel are connected to the sliding cavity; when the first slider is inside the sliding cavity, the second slider blocks the input end of the first connecting channel; when the first slider moves to the point where the output end of the spray channel is inside the crucible, the output end of the first connecting channel is coaxially connected with the input end of the spray channel, and the second slider releases the input end of the first connecting channel to allow the dispersion entering the sliding cavity to enter the first connecting channel.

[0011] Preferably, the first slider and the second slider are connected by a horizontal guide rod, and a limiting plate is provided between the first slider and the second slider in the inner block. The guide rod is inserted into the guide hole provided in the limiting plate. A spring is sleeved on the guide rod, and the spring elastically connects the second slider and the limiting plate. The spring applies the elastic force for the first slider to enter the sliding cavity.

[0012] Preferably, the side of the first slider facing the inside of the crucible has a first inner arc surface with the same curvature as the inner wall of the crucible; the side of the inner block facing the inside of the crucible has a second inner arc surface with the same curvature as the inner wall of the crucible.

[0013] Preferably, the inner plug is further provided with a second connecting channel. The input end of the second connecting channel is connected to the air pipe connection port provided on the outer seat, and the air pipe connection port is connected to the air inlet pipe. The output end of the second connecting channel is connected to the sliding cavity. When the first slider enters the sliding cavity and fits against the limiting plate, the second connecting channel is coaxially connected with the injection channel. At this time, the output end of the injection channel is coaxially connected with the through hole provided on the inner plug. The side wall of the installation notch of the crucible is provided with a waste guiding channel extending to the outside of the crucible. The input end of the waste guiding channel is coaxially connected with the through hole. The crucible is located at the output end of the waste guiding channel and is provided with a waste collection box.

[0014] Preferably, the inner plug is formed by splicing two upper and lower splicing blocks, and each of the opposite sides of the splicing blocks has half of a sliding cavity, a first connecting channel, a second connecting channel and a through hole.

[0015] Preferably, the splicing blocks are fixedly connected by a number of fixing screws, and the splicing blocks are provided with inner countersunk holes for screwing the fixing screws, with the top of the fixing screws located inside the inner countersunk holes.

[0016] Preferably, a sealing ring is provided on the outer side of the mounting notch, and the sealing ring seals the contact position between the mounting notch and the adapter.

[0017] A rapid preparation method for metal-based graphene composite materials, utilizing an apparatus for rapid preparation of metal-based graphene composite materials, includes the following steps:

[0018] Step 1: Add graphene and swelling agent to an organic solvent, mix and sonicate to obtain a dispersion;

[0019] Step 2: Add the metal raw material to the crucible and heat it to melt.

[0020] Step 3: The dispersion is horizontally injected into the crucible through a high-pressure injection pipe along an inclined direction and radial direction. The dispersion injected through the injection channel forms a swirling flow with the liquefied metal inside the crucible, stirring the liquid metal and the dispersion.

[0021] Step 4: Cool and mold to obtain the composite material.

[0022] The advantages of this invention compared to the prior art are:

[0023] Firstly, the injection channel of the adapter in this invention horizontally injects the dispersion in the high-pressure injection pipe into the crucible along an inclined direction and the radial direction of the crucible. The dispersion injected by the injection channel forms a swirling flow with the liquefied metal inside the crucible. Thus, when the dispersion is injected into the crucible under high pressure, it drives the liquid metal and dispersion inside the crucible to rotate and mix. No stirring rod of other materials is required for stirring, ensuring that the resulting composite material is not affected by impurities and thus the quality of the finished product.

[0024] Secondly, the injection channel in this invention is set inside the first slider, which can slide inside the sliding cavity of the inner block. After the high-pressure injection pipe finishes spraying, the first slider moves radially along the crucible again into the sliding cavity. The output end of the injection channel fits into the opening of the sliding cavity. The side wall of the sliding cavity scrapes off the metal attached to the output end of the injection channel and the side wall of the first slider, ensuring that no liquid metal remains after solidification and affects subsequent processing.

[0025] Thirdly, this invention utilizes the power of the dispersion being sprayed in the high-pressure injection pipe to drive the first and second sliders to move. Together with the first connecting channel, a complete moving path for the dispersion to be sprayed is formed after the injection channel enters the crucible. When the high-pressure injection pipe stops spraying, the second slider is reset under the elastic force of the spring, preventing the metal material from flowing back into the injection channel. The presence of the spring, combined with the staggered arrangement of the injection channel and the first connecting channel, allows the second slider to seal the injection pipe connection port when the high-pressure injection pipe is separated from the adapter, preventing the metal in the crucible from flowing out.

[0026] Fourth, the present invention is provided with a through hole that communicates with the sliding cavity when the first slider enters the sliding cavity. The air inlet pipe installed on the outer seat is connected to the air source and delivers high-temperature gas to the air pipe connection port and the second connection channel. The gas blows the liquid metal that has accidentally entered the spray channel into the waste guide channel connected by the through hole, and finally moves along the waste guide channel into the waste collection box for centralized collection, preventing the liquid metal that has accidentally entered the spray channel from solidifying in the spray channel and affecting subsequent processing. Attached Figure Description

[0027] Figure 1 This is a three-dimensional view of the device for rapidly preparing metal-based graphene composite materials in its non-operating state;

[0028] Figure 2 This is a three-dimensional exploded view of the device for rapidly preparing metal-based graphene composite materials in its non-operating state.

[0029] Figure 3 This is a front view of the device for rapidly preparing metal-based graphene composite materials in its non-operating state;

[0030] Figure 4 yes Figure 3 Sectional view of section AA;

[0031] Figure 5 yes Figure 4 A magnified view of section B;

[0032] Figure 6 This is a side view of the device for rapidly preparing metal-based graphene composite materials in operation;

[0033] Figure 7 yes Figure 6 Sectional view at CC;

[0034] Figure 8 yes Figure 7 A magnified view of a portion at point D;

[0035] Figure 9 This is a three-dimensional view of the adapter of the device for rapidly preparing metal-based graphene composite materials;

[0036] Figure 10 This is an exploded three-dimensional view of the adapter of the device for rapidly preparing metal-based graphene composite materials.

[0037] The diagram is labeled as follows: 1. Crucible; 11. Mounting notch; 111. Sealing ring; 12. Waste guide channel; 121. Waste collection box; 2. High-pressure injection pipe; 3. Adapter seat; 31. Injection channel; 311. First slider; 312. Second slider; 313. Guide rod; 314. Spring; 315. First inner arc surface; 32. Outer seat; 321. Injection pipe connection port; 322. Air pipe connection port; 323. Air inlet pipe; 33. Inner plug; 331. Sliding cavity; 332. First connecting channel; 333. Limiting plate; 334. Guide hole; 335. Second inner arc surface; 336. Second connecting channel; 337. Through hole; 34. Splicing block; 341. Fixing screw; 342. Inner countersunk hole. Detailed Implementation

[0038] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figures 1 to 10 :

[0040] An apparatus for rapidly preparing metal-based graphene composite materials includes a crucible 1 for melting metal and a high-pressure injection pipe 2 for spraying a dispersion into the crucible 1. Several high-pressure injection pipes 2 are fixedly mounted on an adapter 3, which is hermetically mounted on mounting notches 11 located on the periphery of the bottom of the crucible 1. The mounting notches 11 are evenly distributed around the periphery of the crucible 1. An injection channel 31 is provided on the adapter 3. The injection channel 31 horizontally injects the dispersion from the high-pressure injection pipes 2 into the interior of the crucible 1 along an inclined direction relative to the radial direction of the crucible 1. The dispersion sprayed by the injection channel 31 creates a swirling flow of liquefied metal inside the crucible 1.

[0041] In this application, the apparatus for rapid preparation of metal-based graphene composite materials involves placing the desired solid metal raw material into a crucible 1 for heating and melting. In this embodiment, the crucible 1 has a mounting notch 11 on its bottom periphery, on which an adapter 3 is mounted. The adapter 3 is connected to a high-pressure injection pipe 2. The high-pressure injection pipe 2, in conjunction with a high-pressure injector, injects a dispersion of graphene and a swelling agent mixed in an organic solvent and ultrasonically treated into the molten metal in the crucible 1. This allows the dispersion to mix with the liquid metal, and after cooling, a composite material is obtained. This method not only effectively introduces graphene into the metal-based material but, more importantly, significantly improves the dispersion effect of graphene, enabling good contact between graphene and the metal or alloy composite material. This fully utilizes the properties of graphene, effectively enhancing the electrical conductivity, thermal conductivity, toughness, and other properties of the graphene-metal composite material. To achieve high strength and thus obtain high-performance graphene-metal composite materials, in this embodiment, multiple high-pressure injection pipes 2 inject the dispersion from the injection channels 31 of the adapter 3, which are evenly distributed around the periphery of the crucible 1, into the interior of the crucible 1. The dispersion directly enters the bottom of the molten metal in the crucible 1 and begins to mix with the molten metal, preventing air from entering. The injection positions are evenly distributed around the periphery of the crucible 1, resulting in a more uniform mixing effect. At the same time, the injection channels 31 of the adapter 3 horizontally inject the dispersion from the high-pressure injection pipes 2 into the interior of the crucible 1 along an inclined direction and radial direction. The dispersion injected by the injection channels 31 forms a swirling flow on the liquefied metal inside the crucible 1, thereby driving the molten metal and dispersion inside the crucible 1 to rotate and mix when the dispersion is injected into the crucible 1 under high pressure. No other stirring rods are needed for stirring, ensuring that the resulting composite material is not affected by impurities and thus ensures the quality of the finished product.

[0042] To address the issue of preventing liquid metal from clogging the output end of the injection channel 31, the following features are specifically designed:

[0043] The adapter 3 includes an outer seat 32 and an inner plug 33. The inner plug 33 is inserted into the mounting notch 11 of the crucible 1 and seals the mounting notch 11. The inner plug 33 is provided with a sliding cavity 331 extending radially along the crucible 1. The outer seat 32 is provided with a spray pipe connection port 321 that connects to the sliding cavity 331. The sliding cavity 331 contains a first slider 311 and a second slider 312 that move synchronously. The first slider 311 is closer to the inside of the crucible 1, and the second slider 312 is closer to the side of the spray pipe connection port 321. The first slider 311 is inclined in the spray channel 31. The two ends of the spray channel 31 are respectively located on the side where the first slider 311 and the sliding cavity 331 are in contact. The first slider 311 enters the interior of the crucible 1 radially so that the output end of the first slider 311 enters the interior of the crucible 1.

[0044] In this embodiment, the adapter 3 is installed on the mounting notch 11 of the crucible 1. The inner plug 33 is inserted into the mounting notch 11 to seal it and prevent the metal inside the crucible 1 from flowing out. The outer seat 32 fits against the outside of the mounting notch 11 and, with the help of screws, seals the opening of the mounting notch 11 and maintains the stability of the adapter 3. The high-pressure injection pipe 2 is connected to the outer seat 32 of the adapter 3 at the injection pipe connection port 321. The injection pipe connection port 321 can be equipped with flanges or other connecting parts to maintain a stable connection with the high-pressure injection pipe 2. The injection channel 31 of the adapter 3 is located inside the first slider 311. The first slider 311 can slide within the sliding cavity 331 of the inner plug 33. When the high-pressure injection pipe 2 is not activated, the first slider 311 is located inside the inner plug 33, and the output end of the injection channel 31 is located inside the sliding cavity 331 and fits against the sliding cavity 331. The sidewall of the moving cavity 331 blocks the injection channel 31. When the high-pressure injection pipe 2 is started, the first slider 311 moves radially along the crucible 1, and the output end of the injection channel 31 disengages from the sliding cavity 331 and enters the interior of the crucible 1, injecting the dispersion in the high-pressure injection pipe 2 into the crucible 1 and forming a swirling flow. After the high-pressure injection pipe 2 finishes spraying, the first slider 311 moves radially along the crucible 1 again and enters the sliding cavity 331. The output end of the injection channel 31 fits against the opening of the sliding cavity 331. The sidewall of the sliding cavity 331 scrapes off the metal attached to the output end of the injection channel 31 and the sidewall of the first slider 311, ensuring that no liquid metal remains and affects subsequent processing after solidification. In this embodiment, the adapter 3 can replace the injection channel 31 with different tilt angles by replacing the first slider 311, thereby changing the swirling flow of the metal in the crucible 1.

[0045] To address the issue of how to make the first slider 311 move automatically when the high-pressure injection pipe 2 is started, the following features are specifically designed:

[0046] The inner block 33 is provided with a first connecting channel 332 on one side of the sliding cavity 331, and the two ends of the first connecting channel 332 are connected to the sliding cavity 331. When the first slider 311 is inside the sliding cavity 331, the second slider 312 blocks the input end of the first connecting channel 332. When the first slider 311 moves to the point where the output end of the spray channel 31 is inside the crucible 1, the output end of the first connecting channel 332 is coaxially connected to the input end of the spray channel 31, and the second slider 312 releases the input end of the first connecting channel 332 so that the dispersion entering the sliding cavity 331 enters the first connecting channel 332.

[0047] In this embodiment, the first slider 311 and the second slider 312 move synchronously. When the first slider 311 is inside the sliding cavity 331 of the inner blocking block 33, the second slider 312 blocks the injection pipe connection port 321. The side wall of the second slider 312 blocks the input end of the first connection channel 332 provided on the inner blocking block 33. When the high-pressure injection pipe 2 is started, the dispersion in the high-pressure injection pipe 2 enters the injection pipe connection port 321 and pushes the second slider 312 to move along the sliding cavity 331, thereby driving the first slider 311 to move synchronously. The output end of the injection channel 31 enters the crucible 1, and the second slider... The movement of 312 also releases the input end of the first connecting channel 332, and the dispersion in the sliding cavity 331 enters the first connecting channel 332. When the output end of the first connecting channel 332 is coaxially connected with the input end of the spray channel 31, the dispersion in the first connecting channel 332 enters the spray channel 31 and is sprayed into the crucible 1. In this embodiment, the power of the dispersion spraying in the high-pressure spray pipe 2 is used to drive the first slider 311 and the second slider 312 to move. With the cooperation of the first connecting channel 332, a complete moving path for the dispersion to be sprayed is formed after the spray channel 31 enters the crucible 1.

[0048] To address the issue of how the first slider 311 automatically enters the inner block 33 after the high-pressure injection pipe 2 stops injecting, the following features are specifically designed:

[0049] The first slider 311 and the second slider 312 are connected by a horizontal guide rod 313. The inner block 33 is located between the first slider 311 and the second slider 312 and is provided with a limiting plate 333. The guide rod 313 is inserted into the guide hole 334 provided on the limiting plate 333. A spring 314 is sleeved on the guide rod 313. The spring 314 elastically connects the second slider 312 and the limiting plate 333. The spring 314 applies the elastic force for the first slider 311 to enter the sliding cavity 331.

[0050] In this embodiment, the first slider 311 and the second slider 312 are connected by a guide rod 313. The guide rod 313 is inserted into the guide hole 334 of the limiting plate 333. The spring 314 on the guide rod 313 applies a spring force to move the second slider 312 toward the injection pipe connection port 321. When the high-pressure injection pipe 2 is started, the second slider 312 compresses the spring 314 under pressure. When the side wall of the second slider 312 is in contact with the guide rod 313, the spring 314 is in the maximum compression state. At this time, the output end of the injection channel 31 on the first slider 311 enters the interior of the crucible 1, and the first The input end of slider 311 is coaxially connected to the output end of the first connecting channel 332. When the high-pressure injection pipe 2 stops spraying, the second slider 312 is reset under the elastic force of spring 314, so that the input end of the injection channel 31 quickly enters the inner block 33 to prevent the metal material from flowing back into the injection channel 31. In this embodiment, the presence of spring 314, together with the staggered arrangement of injection channel 31 and first connecting channel 332, can block the injection pipe connection port 321 when the high-pressure injection pipe 2 is separated from the adapter 3, so that the metal in the crucible 1 will not flow out.

[0051] To prevent the inner block 33 and the first slider 311 from affecting the flow of liquid inside the crucible 1, the following features are specifically designed:

[0052] The first slider 311 has a first inner arc surface 315 with the same curvature as the inner wall of the crucible 1 on the side facing the inside of the crucible 1; the inner block 33 has a second inner arc surface 335 with the same curvature as the inner wall of the crucible 1 on the side facing the inside of the crucible 1.

[0053] In this embodiment, when the first slider 311 is located inside the inner block 33, both the first inner arc surface 315 of the first slider 311 and the second inner arc surface 335 of the inner block 33 ensure the smoothness of the inner wall of the crucible 1, and the metal in the crucible 1 can be heated completely and evenly without any dead corners.

[0054] To address the issue of cleaning up liquid metal that has accidentally entered the spray channel 31, the following features were specifically designed:

[0055] The inner block 33 is also provided with a second connecting channel 336. The input end of the second connecting channel 336 is connected to the air pipe connection port 322 provided on the outer seat 32, and the air pipe connection port 322 is connected to the air inlet pipe 323. The output end of the second connecting channel 336 is connected to the sliding cavity 331. When the first slider 311 enters the sliding cavity 331 and fits the limiting plate 333, the second connecting channel 336 is coaxially connected to the injection channel 31. At this time, the output end of the injection channel 31 is coaxially connected to the through hole 337 provided on the inner block 33. The side wall of the installation notch 11 of the crucible 1 is provided with a waste guiding channel 12 extending to the outside of the crucible 1. The input end of the waste guiding channel 12 is coaxially connected to the through hole 337. The crucible 1 is provided with a waste collection box 121 at the output end of the waste guiding channel 12.

[0056] In this embodiment, when the spring 314 drives the second slider 312 to reset to the position where the second slider 312 blocks the injection pipe connection port 321, the first slider 311 adheres to the limiting plate 333. At this time, the first slider 311 enters the sliding cavity 331 of the inner block 33 and ensures that the position is fixed. The input end of the injection channel 31 is offset from the output end of the first connecting channel 332 and coaxially connected to the output end of the second connecting channel 336. The output end of the injection channel 31 is connected to the through hole 337. The air inlet pipe 323 installed on the outer seat 32 is connected to the air source and delivers high-temperature gas to the air pipe connection port 322 and the second connecting channel 336. The gas blows the liquid metal that has accidentally entered the injection channel 31 into the waste guide channel 12 connected to the through hole 337, and finally moves along the waste guide channel 12 into the waste collection box 121 for centralized collection, preventing the liquid metal that has accidentally entered the injection channel 31 from solidifying in the injection channel 31 and affecting subsequent processing.

[0057] To facilitate the periodic cleaning of the sliding cavity 331, first connecting channel 332, second connecting channel 336, and through hole 337 of the adapter 3, the following features are specifically designed:

[0058] The inner block 33 is formed by splicing two upper and lower splicing blocks 34. Each side of the splicing block 34 has half of a sliding cavity 331, a first connecting channel 332, a second connecting channel 336 and a through hole 337.

[0059] In this embodiment, the inner plug 33 is formed by splicing two splicing blocks 34 one above the other. Each splicing block 34 has half of the sliding cavity 331, the first connecting channel 332, the second connecting channel 336, and the through hole 337. The operator can periodically remove the adapter 3, open the splicing block 34, and directly clean the inside of the sliding cavity 331, the first connecting channel 332, the second connecting channel 336, and the through hole 337. The operation is simple and quick.

[0060] To address the issue of ensuring the sealing effect of the inner plug 33 formed by the splicing of splicing blocks 34 on the installation gap 11, the following features are specifically designed:

[0061] The splicing blocks 34 are fixedly connected by a number of fixing screws 341. The splicing blocks 34 are provided with inner countersunk holes 342 for screwing the fixing screws 341, and the top of the fixing screws 341 is located inside the inner countersunk holes 342.

[0062] In this embodiment, the upper and lower splicing blocks 34 can be connected by fixing screws 341. The inner countersunk hole 342 of the fixing screw 341 can allow the top of the fixing screw 341 to enter below the surface of the splicing block 34. When the splicing blocks 34 are spliced ​​to form an inner plug 33 and inserted into the installation notch 11, the fixing screw 341 will not affect the fit between the periphery of the inner plug 33 and the inner wall of the installation notch 11.

[0063] To address the issue of preventing heat loss from the crucible 1 through the mounting notch 11, the following features are specifically designed:

[0064] A sealing ring 111 is provided on the outside of the mounting notch 11, and the sealing ring 111 seals the contact position between the mounting notch 11 and the adapter 3.

[0065] In this embodiment, the sealing ring 111 seals the openings of the adapter 3 and the mounting notch 11 to prevent heat from the crucible 1 from being lost from the adapter 3 and affecting the melting efficiency of the metal in the crucible 1.

[0066] A rapid preparation method for metal-based graphene composite materials, utilizing an apparatus for rapid preparation of metal-based graphene composite materials, includes the following steps:

[0067] Step 1: Add graphene and swelling agent to an organic solvent, mix and sonicate to obtain a dispersion;

[0068] Step 2: Add the metal raw material to crucible 1 and heat it to melt;

[0069] Step 3: The dispersion is horizontally injected into the crucible 1 through the high-pressure injection pipe 2 in a direction that is inclined and radial to the crucible 1. The dispersion injected through the injection channel 31 forms a swirling flow with the liquefied metal inside the crucible 1, and stirs the liquid metal and the dispersion.

[0070] Step 4: Cool and mold to obtain the composite material.

[0071] Working principle: The operator places the solid metal raw material to be prepared into crucible 1 and heats it to melt. The high-pressure injection pipe 2, together with the high-pressure injector, adds graphene and expansion agent to an organic solvent, mixes them, and ultrasonically treats them to obtain a dispersion, which is then injected into the already melted metal in crucible 1. This allows the dispersion to mix with the liquid metal and, after cooling, to obtain a composite material. The injection channel 31 of the adapter 3 horizontally injects the dispersion from the high-pressure injection pipe 2 into the interior of crucible 1 along an inclined direction and radial direction. The dispersion injected by the injection channel 31 forms a swirling flow with the liquefied metal inside crucible 1. Thus, when the dispersion is injected into crucible 1 under high pressure, it drives the liquid metal and dispersion inside crucible 1 to rotate and mix. After the high-pressure injection pipe 2 stops working, the injection channel 31 enters the interior of the inner block 33 of the adapter 3. The sliding cavity 331 of the inner block 33 scrapes off the metal remaining in the injection channel 31. The air inlet pipe 323 delivers gas into the injection channel 31 to blow any metal that has accidentally entered the injection channel 31 into the waste guide channel 12.

[0072] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. Device for the rapid production of metal-based graphene composites, comprising a crucible (1) for melting a metal, and a high-pressure injection tube (2) for injecting a dispersion towards the crucible (1), characterised in that, There are several high-pressure injection pipes (2). The high-pressure injection pipes (2) are fixedly installed on the adapter (3). The adapter (3) is sealed on the installation notch (11) set on the bottom periphery of the crucible (1). The installation notch (11) is distributed at equal angles around the periphery of the crucible (1). The adapter (3) is provided with an injection channel (31). The injection channel (31) injects the dispersion in the high-pressure injection pipe (2) horizontally into the crucible (1) along a direction inclined to the radial direction of the crucible (1). The dispersion injected by the injection channel (31) forms a swirling flow on the liquefied metal inside the crucible (1). The adapter (3) includes an outer seat (32) and an inner plug (33), the inner plug (33) being inserted into the mounting notch (11) of the crucible (1) and sealing the mounting notch (11); The inner block (33) is provided with a sliding cavity (331) extending radially along the crucible (1), and the outer seat (32) is provided with a jet pipe connection port (321) connecting the sliding cavity (331). The sliding cavity (331) is slidably installed with a first slider (311) and a second slider (312) that move synchronously. The first slider (311) is closer to the inside of the crucible (1), and the second slider (312) is closer to the jet pipe connection port (321). The injection channel (31) is inclinedly disposed in the first slider (311). The two ends of the injection channel (31) are respectively located on the side where the first slider (311) and the sliding cavity (331) are in contact. The first slider (311) enters the interior of the crucible (1) radially along the crucible (1) so that the output end of the first slider (311) enters the interior of the crucible (1).

2. The device for rapid fabrication of metal-based graphene composites according to claim 1, wherein, The inner block (33) is provided with a first connecting channel (332) on one side of the sliding cavity (331), and the two ends of the first connecting channel (332) are connected to the sliding cavity (331). When the first slider (311) is inside the sliding cavity (331), the second slider (312) blocks the input end of the first connecting channel (332); When the first slider (311) moves to the point where the output end of the spray channel (31) is inside the crucible (1), the output end of the first connecting channel (332) is coaxially connected to the input end of the spray channel (31), and the second slider (312) releases the input end of the first connecting channel (332) so that the dispersion entering the sliding cavity (331) enters the first connecting channel (332).

3. The device for rapid fabrication of metal-based graphene composites according to claim 2, wherein, The first slider (311) and the second slider (312) are connected by a horizontal guide rod (313). A limit plate (333) is provided in the inner block (33) between the first slider (311) and the second slider (312). The guide rod (313) is inserted into the guide hole (334) provided on the limit plate (333). A spring (314) is fitted on the guide rod (313). The spring (314) elastically connects the second slider (312) and the limiting plate (333). The spring (314) applies the elastic force to the first slider (311) as it enters the sliding cavity (331).

4. The device for rapid fabrication of metal-based graphene composites according to claim 3, wherein, The first slider (311) has a first inner arc surface (315) with the same curvature as the inner wall of the crucible (1) on the side facing the inside of the crucible (1). The inner block (33) has a second inner arc surface (335) with the same curvature as the inner wall of the crucible (1) on the side facing the inside of the crucible (1).

5. The device for rapid fabrication of metal-based graphene composites of claim 2, wherein, The inner block (33) is also provided with a second connecting channel (336), the input end of the second connecting channel (336) is connected to the air pipe connection port (322) provided on the outer seat (32), and the air pipe connection port (322) is connected to the air inlet pipe (323). The output end of the second connecting channel (336) is connected to the sliding cavity (331). When the first slider (311) enters the sliding cavity (331) and fits the limiting plate (333), the second connecting channel (336) is coaxially connected to the injection channel (31). At this time, the output end of the injection channel (31) is coaxially connected to the through hole (337) provided on the inner block (33). The side wall of the mounting notch (11) of the crucible (1) is provided with a waste guide channel (12) extending to the outside of the crucible (1). The input end of the waste guide channel (12) is coaxially connected to the through hole (337). The crucible (1) is provided with a waste collection box (121) at the output end of the waste guide channel (12).

6. The device for rapid fabrication of metal-based graphene composites of claim 5, wherein, The inner block (33) is formed by splicing two upper and lower splicing blocks (34). Each side of the splicing block (34) has half of a sliding cavity (331), a first connecting channel (332), a second connecting channel (336), and a through hole (337).

7. The device for rapid fabrication of metal-based graphene composites of claim 6, wherein, The splicing blocks (34) are fixedly connected by a number of fixing screws (341). The splicing blocks (34) are provided with inner countersunk holes (342) for screwing the fixing screws (341). The top of the fixing screws (341) is located inside the inner countersunk holes (342).

8. The device for rapid fabrication of metal-based graphene composites of claim 1, wherein, A sealing ring (111) is provided on the outside of the mounting notch (11), and the sealing ring (111) seals the contact position between the mounting notch (11) and the adapter (3).

9. A method for the rapid production of metal-based graphene composites, applied to the device for the rapid production of metal-based graphene composites according to any one of claims 1-8, characterized by, Includes the following steps: Step 1: Add graphene and swelling agent to an organic solvent, mix and sonicate to obtain a dispersion; Step 2: Add the metal raw material to the crucible (1) and heat it to melt it; Step 3: The dispersion is horizontally injected into the crucible (1) through the high-pressure injection pipe (2) in a direction inclined to the radial direction of the crucible (1). The dispersion injected through the injection channel (31) forms a swirling flow with the liquefied metal inside the crucible (1), and stirs the liquid metal and the dispersion. Step 4: Cool and mold to obtain the composite material.

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