Device for processing copper-based graphene using lifting pressure head

Abstract

The present application provides a device for processing copper-based graphene using a lifting head. The device includes: a substrate, including a processing area and a processing platform arranged in the processing area, and the processing area is set as an oxygen-free area; a heating mechanism, arranged in the processing area, for heating the copper-based graphene laminate to 500°C to 900°C; and a lifting head, arranged in the processing area, the lifting head has a hot pressing stroke that moves toward one side close to the processing platform and then hot presses the copper-based graphene laminate into an integrated structure. In this scheme, the copper-based graphene laminate is hot pressed into a copper-based graphene composite material with an integrated structure. It has been verified by experiments that the copper-based graphene composite material after hot pressing has high conductivity and high-quality mechanical properties.

Description

Technical Field

[0001] The present application relates to the technical field of copper-based graphene processing, and in particular to a device for processing copper-based graphene using a lifting pressure head. Background Art

[0002] Graphene is a carbon material with a single-layer two-dimensional honeycomb lattice structure formed by densely stacked sp2 hybridized carbon atoms. Graphene has excellent comprehensive properties, with a tensile strength of 125Gpa, an elastic modulus of 1.0Tpa, a thermal conductivity of 5300W / (m·k), and an electron mobility of 2×105cm 2 (v·s), therefore, graphene is often used as an ideal filler to prepare composite materials.

[0003] In existing technologies, chemical vapor deposition (CVD) is used to produce copper-based graphene composites by decomposing a carbon source and then depositing and growing graphene on the surface of copper foil. However, in practical applications, in order to achieve high electrical conductivity and improved mechanical properties, the copper-based graphene composites prepared using this method need to be further processed. Summary of the Invention

[0004] In view of this, the present application provides a device for processing copper-based graphene using a lifting pressure head, which can reprocess the copper-based graphene to meet the requirements of high conductivity and excellent mechanical properties.

[0005] Specifically, this application is implemented through the following technical solutions:

[0006] A device for processing copper-based graphene using a lifting pressure head, comprising:

[0007] The substrate includes a processing area and a processing platform arranged in the processing area, wherein the processing area is configured as an oxygen-free area;

[0008] A heating mechanism, disposed in the processing area, for heating the copper-graphene laminate to a temperature of 500° C. to 900° C.; and

[0009] A lifting pressure head is arranged in the processing area, and the lifting pressure head has a hot pressing stroke of moving toward a side close to the processing platform to hot press the copper-based graphene stack into an integrated structure.

[0010] Optionally, the heating mechanism is arranged in the lifting head.

[0011] Optionally, the lifting pressure head includes a heat-insulating material, and the heat-insulating material is arranged around the heating mechanism, and the area surrounded by the heat-insulating material is the hot pressing area of ​​the lifting pressure head.

[0012] Optionally, the area of ​​the hot pressing region is smaller than the area of ​​the copper-based-graphene stack. During the hot pressing process, the hot pressing region is hot pressed in the middle area of ​​the copper-based-graphene stack, leaving a distance from the edge of the copper-based-graphene stack.

[0013] Optionally, the device further includes a temperature sensor and a controller, which are electrically connected. The controller controls the heating power of the heating mechanism according to temperature data obtained by the temperature sensor to ensure that the hot pressing temperature is constant.

[0014] Optionally, the device further comprises a transmission member for transmitting power to the lifting pressure head to generate the hot pressing stroke, and the transmission member is detachably connected to the lifting pressure head.

[0015] Optionally, the transmission member is threadedly connected to the lifting head.

[0016] Optionally, the device further comprises a protective gas introduction mechanism, wherein the protective gas introduction mechanism is used to introduce protective gas into the processing area to prevent oxidation of the copper-based-graphene laminate.

[0017] Optionally, at the end position of the hot pressing stroke, the gap between the lifting pressure head and the processing platform is 80%-99% of the total thickness of the copper-based-graphene laminate.

[0018] Optionally, the device further comprises a conveying mechanism, the conveying surface of the conveying mechanism is flush with the upper surface of the substrate, and the conveying mechanism is used to input the copper-based-graphene laminate to the processing area and / or output the hot-pressed material.

[0019] Optionally, the conveying mechanism includes a feed conveying roller for inputting the copper-based graphene stack into the processing area, the feed conveying roller is arranged on the feeding side of the substrate, and the upper surface of the substrate extends toward one side of the feed conveying roller and connects with the apex of the feed conveying roller.

[0020] Optionally, the conveying mechanism includes a discharge conveying roller for outputting the hot-pressed material, the discharge conveying roller is arranged on the discharge side of the base, and the upper surface of the base extends toward one side of the discharge conveying roller and connects with the top of the discharge conveying roller.

[0021] Optionally, the device further includes an inner box and an outer box, the inner box is arranged inside the outer box, the area surrounded by the inner box is the processing area, the area surrounded by the outer box is the oxygen-free sealed area, and the processing area is connected to the oxygen-free sealed area.

[0022] Optionally, the device also includes a seal for sealing the outer box body, the seal including a first sealing portion arranged on the outer box body and extending along the joint between the outer box body and the base body, and a second sealing portion arranged on the base body and extending along the joint between the outer box body and the base body, the first sealing portion and the second sealing portion being sealingly engaged.

[0023] Optionally, the device further includes a preheating mechanism for preheating the copper-based-graphene laminate before hot pressing, and the preheating mechanism is disposed in the outer box.

[0024] Optionally, the device also includes a rotatable discharge roller and a receiving roller, the discharge roller is arranged on the feed side of the substrate, and is used to provide a strip-shaped copper-based-graphene laminate to the processing area, and the receiving roller is arranged on the discharge side of the substrate, and is used to wind up the strip after hot pressing.

[0025] The technical solution provided by this application can achieve the following beneficial effects:

[0026] This application provides a device for processing copper-based graphene using a lifting head. The device includes a processing area in an oxygen-free environment and a lifting head disposed within the processing area. Within the processing area, a copper-based graphene laminate can be heated to 500°C to 900°C by a heating mechanism. The copper-based graphene laminate is then hot-pressed between the lifting head and the processing platform through the movement of the lifting head, thereby hot-pressing the copper-based graphene laminate into a one-piece copper-based graphene composite material. Experimental verification shows that the copper-based graphene composite material has high electrical conductivity and excellent mechanical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A cross-sectional view of a portion of the structure of an apparatus for processing copper-based graphene using a lifting pressure head according to an exemplary embodiment of the present application is shown;

[0028] Figure 2 Shown Figure 1 AA view in;

[0029] Figure 3 A schematic diagram of another embodiment of a limiting mechanism for limiting the extension of a copper-based graphene stack in the present device is shown;

[0030] Figure 4 A top view of a partial structure of an apparatus for processing copper-based graphene using a lifting pressure head according to an exemplary embodiment of the present application is shown. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0032] The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the same ordinary meaning as understood by a person of ordinary skill in the art to which this invention belongs. The terms "first," "second," and similar terms used in this specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish one component from another. Similarly, the terms "a" or "an" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "plurality" or "several" refer to two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper," "top," and "bottom" are used for convenience only and are not intended to limit a position or spatial orientation. The terms "include," "comprising," and similar terms mean that the elements or items preceding the term "include" or "comprising" include the elements or items listed after the term and their equivalents, and do not exclude other elements or items. The terms "connected," "connected," and similar terms are not limited to physical or mechanical connections and may include electrical connections, whether direct or indirect.

[0033] Please refer to Figure 1 , Figure 1 A schematic diagram showing a partial structure of an apparatus for processing copper-based graphene using a lifting pressure head according to an exemplary embodiment of the present application is shown.

[0034] The present application provides a device 10 for processing copper-based graphene using a lifting press head. The device 10 is used to hot-press a copper-based graphene stack into a copper-based graphene composite material with an integrated structure. After hot pressing, the copper layer and the graphene layer in the copper-based graphene composite material are alternately stacked.

[0035] The copper-based graphene laminate comprises multiple layers of overlapping copper-based graphene films, which can be produced by chemical vapor deposition. The thickness of the copper-based graphene film produced varies depending on the thickness of the copper substrate used. The copper substrate thickness is typically between 7μm and 50μm, and the graphene layer grown on the copper substrate is approximately 1nm thick.

[0036] The number of layers of the copper-based graphene stack is not limited and can be selected according to actual needs. For example, 20 layers, 60 layers, 80 layers, or 100 layers of the copper-based graphene stack can be hot-pressed together.

[0037] Specifically, such as Figure 1 As shown, the device 10 includes a base 11, a lifting head 12 and a heating mechanism 20. The base 11 includes a processing area 110 and a processing platform 112 disposed in the processing area 110, and the processing area 110 is configured as an oxygen-free area.

[0038] The lifting head 12 and the heating mechanism 20 are both arranged in the processing area 110, wherein the heating mechanism 20 is used to heat the copper-based-graphene laminate 80 to 500°C to 900°C, and further, the copper-based-graphene laminate 80 can be heated to 800°C to 900°C. The lifting head 12 has a hot pressing stroke that moves toward the side close to the processing platform 112 and then hot presses the copper-based-graphene laminate 80 into an integrated structure. During the hot pressing process, the pressure applied by the lifting head 12 to the copper-based-graphene laminate 80 can be maintained to ensure that the copper-based-graphene laminate 80 is reliably joined into an integrated structure. In one example, the hot pressing time of the lifting head 12 can be maintained at 5min to 20min, and the pressure can be maintained at 20Mpa to 50Mpa. After the hot pressing is completed, the lifting head 12 is moved to the side away from the processing platform 112 and reset, that is, a working cycle is completed.

[0039] It is easy to understand that at the end of the hot pressing stroke, a hot pressing gap should be left between the lifting head 12 and the processing platform 112 to accommodate the copper-based graphene laminate 80. In one example, the hot pressing gap can be set to 80% to 99% of the total thickness of the copper-based graphene laminate 80. Furthermore, the hot pressing gap can be set to 95% to 99% of the total thickness of the copper-based graphene laminate 80. The hot pressing gap can be used to control the reliability of the copper-based graphene laminate after hot pressing.

[0040] The lifting pressure head 12 can have multiple installation positions on the press. At different installation positions, the distance between the lifting pressure head 12 and the processing platform 112 is different, and the hot pressing stroke is different, so that the hot pressing stroke can be adjusted to meet the hot pressing requirements of copper-based-graphene stacks 80 with different numbers of layers.

[0041] The following experiments verify the electrical conductivity and mechanical properties of the hot-pressed copper-graphene composite material. Tables 1 to 4 list the parameters of the various samples.

[0042] Table 1

[0043]

[0044] Table 2

[0045]

[0046] Table 3

[0047]

[0048] Table 4

[0049]

[0050] The mechanical and electrical performance tests were performed on the 20 samples listed in Tables 1 to 4. The test results are shown in Table 5.

[0051] Table 5

[0052]

[0053]

[0054] From the analysis in Table 5, we can see that the conductivity of the copper-based graphene composite material after hot pressing is 109.9% to 120%, and the tensile strength R m The plastic extension strength R is 204Mpa~212Mpa. p0.2 The actual compression force F is 9189N~10190N, and the Vickers hardness is HV 0.2 It is 54.2 to 55.6. It can be seen that the copper-based graphene composite material after hot pressing has high conductivity and excellent mechanical properties.

[0055] Please continue to refer to Figure 1 The apparatus 10 further includes an inner box 13 and an outer box 14, wherein the inner box 13 is disposed within the outer box 14. The area enclosed by the inner box 13 is a processing area 110, and the area enclosed by the outer box 14 is an oxygen-free area. The processing area 110 is connected to the oxygen-free area. In one example, an oxygen-free area can be formed within the inner and outer boxes 13, 14 by applying a vacuum to the outer box 14.

[0056] It is easy to understand that setting the area inside the inner box 13 as the processing area 110 can enable the heating mechanism 20 to heat only in a relatively small space, thereby enabling the copper-based-graphene stack 80 to be quickly heated to 500°C to 900°C, reducing heat loss and improving heating efficiency, while helping to maintain a constant temperature during the hot pressing process.

[0057] The device 10 also includes a seal 140, which is used to seal the outer box 14, so that the oxygen-free area is a sealed area. Specifically, the seal 140 includes a first sealing portion 140a and a second sealing portion 140b. The first sealing portion 140a is provided on the outer box 14 and extends along the joint between the outer box 14 and the base 11 to form an annular structure. The second sealing portion 140b is provided on the base 11 and extends along the joint between the outer box 14 and the base 11 to form an annular structure. The first sealing portion 140a and the second sealing portion 140b are sealed and engaged to achieve sealing of the outer box 14. The material of the seal 140 is not limited, and can be made of flexible and high-temperature resistant materials such as rubber, asbestos, MgO-Cr2O3, MgO-ZrO2, etc.

[0058] An entrance for the copper-based-graphene stack 80 is left between the first sealing portion 140a and the second sealing portion 140b. At the entrance, the first sealing portion 140a and the second sealing portion 140b are sealed and joined to the upper and lower surfaces of the copper-based-graphene stack 80 respectively. At the remaining positions, the first sealing portion 140a and the second sealing portion 140b are sealed and joined.

[0059] The oxygen-free environment within processing region 110 prevents oxidation of the copper substrate in copper-graphene laminate 80. To enhance this effect, a protective gas, such as helium, nitrogen, argon, or carbon dioxide, may be introduced into processing region 110. The pressure of the protective gas is between 20 MPa and 100 MPa.

[0060] Based on this, the device 10 includes a protective gas introduction mechanism 15 , which is connected to the inner area of ​​the outer box 14 , and the protective gas can enter the processing area 110 through the channel between the outer box 14 and the inner box 13 .

[0061] The "oxygen-free" mentioned here does not mean oxygen-free in the strict sense, but the oxygen content is far lower than the normal level, and the oxidation caused to the copper substrate is negligible.

[0062] exist Figure 1 In the illustrated example, the heating mechanism 20 is disposed within the lifting head 12. With this arrangement, the heat generated by the heating mechanism 20 can be transferred through the contact between the lifting head 12 and the copper-based graphene laminate 80, thereby heating the copper-based graphene laminate 80. For example, the heating mechanism 20 can be configured as an electric heater, but is not limited thereto.

[0063] Please refer to Figure 2 , Figure 2 Shown Figure 1AA view in. In order to reduce heat loss, in the present application, the lifting head 12 is provided with a heat insulating material 120, and the heat insulating material 120 is provided around the heating mechanism 20. It is easy to understand that the heat insulating material 120 can slow down the rate of heat transfer so that the heat is concentrated in the central area of ​​the lifting head 12 to reduce heat loss. At this time, the area surrounded by the heat insulating material 120 can serve as the hot pressing area of ​​the lifting head 12, and the copper-based-graphene laminate 80 can be hot pressed through this hot pressing area.

[0064] The heat insulating material 120 may be made of nano-scale titanium silicate composite inorganic powder, Al2O3 aerogel-TiO2 infrared sunshade composite material, vapor-phase SiO2, zircon composite material, etc.

[0065] The lifting head 12 provided in this application can also heat the copper-based graphene laminate 80 during the hot pressing process. For example, the lifting head 12 moves and hot presses the copper-based graphene laminate 80 against the processing platform 112. During the heating process, the pressing force on the copper-based graphene laminate 80 is always maintained. The hot pressing time can be set to 5 minutes to 20 minutes, and the pressure can be 10 MPa to 50 MPa.

[0066] On the other hand, the use of the lifting pressure head 12 provided in this application can also limit the extension of the copper-based-graphene laminate 80 in the four directions. Specifically, the area of ​​the hot pressing region can be further set to be smaller than the area of ​​the copper-based-graphene laminate 80. After being set in this way, during the hot pressing process, the hot pressing region is hot pressed in the middle area of ​​the copper-based-graphene laminate 80, leaving a gap with the edge of the copper-based-graphene laminate 80. In this way, only the part of the copper-based-graphene laminate 80 in contact with the hot pressing region can be hot pressed into an integrated structure, while at the edge of the copper-based-graphene laminate 80, the temperature does not reach the hot pressing temperature (500°C to 900°C) and will not be hot pressed into an integrated structure, thereby limiting the extension of the copper-based-graphene laminate 80 in the four directions. It is worth noting that the material after hot pressing can be cut off by cutting or other methods to remove the unpressed edges.

[0067] For another example, see Figure 3 , Figure 3 A cross-sectional view of another embodiment of a limiting mechanism is shown. The device 10 may also include a limiting mechanism 18, which is used to limit the extension of the copper-based-graphene laminate 80 in the width direction after hot pressing (for strip materials, the extension in the length direction during hot pressing can be ignored). The limiting mechanism 18 includes two blocks arranged in the width direction of the copper-based-graphene laminate 80. The two blocks are arranged in the processing area 110 and are located on both sides of the copper-based-graphene laminate in the width direction. This limiting mechanism 18 is used when the edges of the copper-based-graphene laminate 80 are also hot pressed together.

[0068] During the hot pressing process, in order to effectively control the temperature of the processing area 110, the device 10 also includes a temperature sensor and a temperature controller (not shown in the figure). The temperature sensor is electrically connected to the temperature controller. The temperature controller adjusts the heating power of the heating mechanism 20 in the processing area 110 according to the temperature data obtained by the temperature sensor to keep the temperature in the processing area 110 constant during hot pressing.

[0069] In one example, the temperature sensor can be disposed in the processing platform 112, or in the lifting head 12. A plurality of temperature sensors can be provided and arranged at intervals from each other to improve the accuracy of temperature sensing.

[0070] The processing platform 112 can be configured as an integrated structure or a split structure. When a split structure is adopted, the portion of the processing platform 112 that bears the greater pressure from the lifting head 12 can be separately provided. For example, this portion can be made of materials such as mold steel, alloy steel, and graphite to increase the hardness, wear resistance, and pressure tolerance of the processing platform 112.

[0071] Please continue to refer to Figure 3 The device 10 further includes a transmission member 17 for transmitting power to the lifting head 12 to generate a hot pressing stroke. One end of the transmission member 17 is connected to a press (not shown in the figure), and the other end is connected to the lifting head 12. The press transmits power to the lifting head 12 via the transmission member 17, thereby driving the lifting head 12 to rise to generate a hot pressing stroke or reset.

[0072] In one example, the lifting head 12 can be detachably connected to the transmission member 17. This allows for the replacement of the lifting head 12 with a matching one based on the specifications of the hot-pressed material, thereby increasing the adaptability of the device 10. For example, the width of the copper-graphene laminate can be set to 8 mm to 40 mm. Furthermore, the transmission member 17 does not need to be changed when the lifting head 12 is replaced, thus reducing costs.

[0073] Insulation material can be added to the connection between the lifting head 12 and the transmission member 17. On the one hand, the use of insulation material greatly reduces the heat transfer to the transmission member 17, thereby reducing heat loss; on the other hand, it can also prevent heat transfer to the press, improving the working condition of the press.

[0074] In an optional example, the lifting head 12 and the transmission member can be connected by a threaded connection, which has high reliability and is relatively convenient for installing thermal insulation materials. However, it should be understood that the connection method between the two is not limited to this.

[0075] Please refer to Figure 1 and Figure 4The device 10 further includes a conveying mechanism 16 , a conveying surface of the conveying mechanism 16 is flush with the upper surface of the processing platform 112 . In this example, the upper surface of the substrate 11 is flush with the upper surface of the processing platform 112 .

[0076] The conveying mechanism 16 is only used to input the copper-based graphene stack 80 into the processing area 110, or the conveying mechanism 16 is only used to output the hot-pressed material, or the conveying mechanism 16 can both input the copper-based graphene stack 80 into the processing area 110 and output the hot-pressed material.

[0077] In this example, the conveying mechanism 16 includes a feed conveying roller 160 for inputting the copper-based-graphene stack 80 into the processing area 110. The feed conveying roller 160 is arranged on the feeding side of the substrate 11, and the upper surface of the substrate 11 extends toward one side of the feed conveying roller 160 and connects with the top of the feed conveying roller 160.

[0078] The feed side of the substrate 11 includes a concave arc surface 111 to leave space to accommodate the feed conveying roller 160, so that the feed conveying roller 160 can be closer to the feed side of the substrate 11, thereby facilitating seamless connection between the conveying mechanism 16 and the substrate 11.

[0079] Furthermore, the conveying mechanism 16 can also include a discharge conveying roller 162 for outputting the hot-pressed material. The discharge conveying roller 162 is arranged on the discharge side of the base 11, and the upper surface of the base 11 extends toward one side of the discharge conveying roller 162 and connects with the top of the discharge conveying roller 162.

[0080] Similarly, the discharge side of the substrate 11 may include a concave arc surface to leave space to accommodate the discharge conveyor roller 162, so that the discharge conveyor roller 162 can be closer to the discharge side of the processing platform 112, thereby facilitating the seamless connection between the conveying mechanism 16 and the substrate 11, thereby reducing the gap between the discharge conveyor roller 162 and the substrate 11, and preventing the copper-based-graphene composite material after hot pressing from being stuck in the gap and scratched during discharge.

[0081] A plurality of feed conveying rollers 160 can be provided, and each feed conveying roller 160 can be driven to rotate synchronously by a transmission mechanism 164. In one example, the transmission mechanism 164 can be a chain transmission mechanism, but is not limited thereto. The transmission mechanism 164 can also be a gear transmission mechanism, a belt transmission mechanism, etc.

[0082] Multiple discharge conveying rollers 162 can be provided, and each discharge conveying roller 162 can be driven to rotate synchronously by a transmission mechanism 166. In one example, the transmission mechanism 166 can be a chain transmission mechanism, but is not limited to this. The transmission mechanism 166 can also be a gear transmission mechanism, a belt transmission mechanism, etc.

[0083] The apparatus 10 may further include a preheating mechanism (not shown) that can preheat the copper-graphene laminate 80 before hot pressing, gradually raising the temperature of the copper-graphene laminate 80 from room temperature. The preheated temperature may be approximately 50% to 80% of the hot pressing temperature.

[0084] The preheating mechanism may include an electromagnetic induction heater. The electromagnetic induction heater generates an electric current within the copper-based graphene laminate 80 through electromagnetic induction, utilizing eddy current energy to achieve heating. The electromagnetic induction heater does not require air as a heat transfer medium and can therefore heat the copper-based graphene laminate 80 even in a vacuum environment. In the device 10, the electromagnetic induction heater may be disposed on the inner wall of the outer housing 14, extending toward the side closest to the copper-based graphene laminate 80.

[0085] The device 10 provided in this application can also be adapted for hot pressing of sheets and strips. To meet the processing requirements of the strip, the device 10 can also include a rotatable discharge roller and a take-up roller (not shown in the figure), wherein the discharge roller is arranged on the feed side of the substrate 11 for providing a strip of copper-based graphene laminate 80 to the processing area, and the take-up roller is arranged on the discharge side of the substrate 11 for winding up the hot-pressed strip.

[0086] In practical applications, multiple unwinding rollers can be provided, spatially arranged, with the strip of copper-based graphene laminate 80 wound around each roller, with each roller carrying at least one layer of copper-based graphene laminate 80. During operation, the multiple unwinding rollers rotate simultaneously to discharge the material into the processing area 110. After hot pressing is complete, a take-up roller rewinds the hot-pressed strip. The number of unwinding rollers is unlimited and can be selected based on the number of layers of copper-based graphene laminate 80 and the available space.

[0087] The device may further include a guide roller, which may guide the multiple layers of copper-based-graphene laminate 80 to overlap each other before entering the outer box 14 .

[0088] Since the hot-pressed product is in a high temperature state of 500°C to 900°C, the device 10 may further include a cooling mechanism for cooling the hot-pressed product to room temperature. The cooled product is wound up by a receiving roller.

[0089] The hot pressing process of the copper-based graphene laminate is explained below using a strip as an example.

[0090] After the outer box 14 is evacuated, a protective gas is introduced;

[0091] The copper-based graphene laminate 80 is discharged into the outer box 14 by the discharge roller;

[0092] Preheating the copper-graphene laminate from 80°C to 300°C to 400°C;

[0093] The preheated copper-based graphene laminate 80 is fed into the processing area 110 and further heated to 500° C. to 900° C. The lifting head 12 is lowered to hot-press the copper-based graphene laminate 80 ;

[0094] Under the hot pressing conditions of a pressure of 20 MPa to 50 MPa and a hot pressing temperature of 500° C. to 900° C., the lifting and lowering pressure head 12 is kept hot pressed on the copper-based graphene laminate 80 for a hot pressing time of 5 min to 20 min, so that the copper-based graphene laminate 80 is hot pressed into an integrated structure;

[0095] After the hot pressing is completed, the lifting pressure head 12 is lifted to complete one round of hot pressing. The hot pressed material is cooled and then rolled up on the receiving roller.

[0096] It should be noted that during the transportation of the copper-based-graphene stack 80, the offset and material tension of the copper-based-graphene stack 80 when overlapping can be corrected by a correction mechanism and a tension control mechanism to ensure the quality of the product after hot pressing.

[0097] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A device for processing copper-based graphene using a lifting pressure head, characterized in that: include: A substrate (11) comprises a processing area (110) and a processing platform (112) arranged in the processing area (110), wherein the processing area (110) is set as an oxygen-free area; A heating mechanism (20) is disposed in the processing area (110) and is used to heat the copper-based graphene laminate (80) to 500° C. to 900° C.; and A lifting and lowering pressure head (12) is arranged in the processing area (110), and the lifting and lowering pressure head (12) has a hot pressing stroke for moving toward a side close to the processing platform (112) to hot press the copper-based graphene stack (80) into an integrated structure. The heating mechanism (20) is arranged in the lifting and lowering head (12). The lifting and lowering pressure head (12) comprises a heat insulating material (120), the heat insulating material (120) is arranged around the heating mechanism (20), and the area surrounded by the heat insulating material (120) is the hot pressing area of ​​the lifting and lowering pressure head (12). The area of ​​the hot pressing region is smaller than the area of ​​the copper-based graphene laminate (80); during the hot pressing process, the hot pressing region is hot pressed in the middle area of ​​the copper-based graphene laminate (80), leaving a distance from the edge of the copper-based graphene laminate (80); the device (10) further comprises a transmission member (17) for transmitting power to the lifting and lowering head (12) to generate the hot pressing stroke; the transmission member (17) is detachably connected to the lifting and lowering head (12); The device (10) further comprises a protective gas introduction mechanism (15), wherein the protective gas introduction mechanism (15) is used to introduce protective gas into the processing area (110) to prevent oxidation of the copper-based graphene laminate (80).

2. The device for processing copper-based graphene using a lifting pressure head according to claim 1, characterized in that: The device (10) also includes a temperature sensor and a controller, which are electrically connected. The controller adjusts the heating power of the heating mechanism (20) according to the temperature data obtained by the temperature sensor to ensure a constant temperature during hot pressing.

3. The device for processing copper-based graphene using a lifting pressure head according to claim 1, characterized in that: The transmission member (17) is threadedly connected to the lifting and lowering head (12).

4. The device for processing copper-based graphene using a lifting pressure head according to claim 1, characterized in that: At the end position of the hot pressing stroke, the gap between the lifting and lowering pressure head (12) and the processing platform (112) is 80%-99% of the total thickness of the copper-based-graphene laminate.

5. The device for processing copper-based graphene using a lifting pressure head according to claim 1, characterized in that: The device (10) further comprises a conveying mechanism (16), the conveying surface of the conveying mechanism (16) being flush with the upper surface of the substrate (11), and the conveying mechanism (16) being used for inputting the copper-based graphene laminate (80) into the processing area (110), and / or outputting the hot-pressed material.

6. The device for processing copper-based graphene using a lifting pressure head according to claim 5, characterized in that: The conveying mechanism (16) comprises a feed conveying roller (160) for inputting the copper-based graphene stack (80) into the processing area (110); the feed conveying roller (160) is arranged on the feeding side of the substrate (11); the upper surface of the substrate (11) extends toward one side of the feed conveying roller (160) and is connected to the top of the feed conveying roller (160).

7. The device for processing copper-based graphene using a lifting pressure head according to claim 5, characterized in that: The conveying mechanism (16) comprises a discharge conveying roller (162) for discharging the hot-pressed material, wherein the discharge conveying roller (162) is arranged on the discharge side of the base body (11), and the upper surface of the base body (11) extends toward one side of the discharge conveying roller (162) and is connected with the top point of the discharge conveying roller (162).

8. The device for processing copper-based graphene using a lifting pressure head according to claim 1, characterized in that: The device (10) further comprises an inner box (13) and an outer box (14); the inner box (13) is arranged inside the outer box (14); the area surrounded by the inner box (13) is the processing area (110); the area surrounded by the outer box (14) is the anaerobic area; the processing area (110) is connected to the anaerobic area.

9. The device for processing copper-based graphene using a lifting pressure head according to claim 8, characterized in that: The device also includes a sealing member (140) for sealing the outer box (14). The sealing member (140) includes a first sealing portion (140a) arranged on the outer box (14) and extending along the joint between the outer box (14) and the base (11), and a second sealing portion (140b) arranged on the base (11) and extending along the joint between the outer box (14) and the base (11). The first sealing portion (140a) and the second sealing portion (140b) are sealingly joined.

10. The device for processing copper-based graphene using a lifting pressure head according to claim 8, characterized in that: The device (10) also includes a preheating mechanism for preheating the copper-based graphene laminate before hot pressing, and the preheating mechanism is arranged in the outer box (14).

11. The device for processing copper-based graphene using a lifting pressure head according to claim 1, characterized in that: The device (10) also includes a rotatably arranged unwinding roller and a receiving roller, wherein the unwinding roller is arranged on the feeding side of the substrate (11) and is used to provide a strip-shaped copper-based-graphene laminate (80) to the processing area (110), and the receiving roller is arranged on the discharging side of the substrate (11) and is used to roll up the hot-pressed strip.

Images