High-performance layered composite material containing copper and aluminum

Abstract

The invention relates to the technical field of composite materials, in particular to a high-performance layered composite material containing copper and aluminum, which is prepared through the following steps: S1, raw material preparation: a pure copper plate and a pure aluminum plate are selected as raw materials, the thickness of the pure copper plate is 8-10 mm, the thickness of the pure aluminum plate is 2-4 mm, and the pure copper plate and the pure aluminum plate are cut into the same size; according to the method, the coating material is evenly attached to the surface of the plate blank, it can be guaranteed that the coating material is evenly attached to the plate blank through oscillation drying treatment, bubbles are avoided, in the circulation treatment of the plate blank, metal particle components in the coating material are subjected to thermal expansion, and the thermally-expanded metal particles can expand the pore structure of the surface of the plate blank; the space between the first plate blank and the second plate blank is tightly filled with the metal particles, it is ensured that the first plate blank and the second plate blank are tightly combined to complete preparation of the composite material, and the situation that the strength performance is affected due to uneven stress of the composite contact face of the composite material is avoided.

Description

Technical Field

[0001] This invention relates to the field of composite material technology, specifically to a high-performance layered composite material containing copper and aluminum. Background Technology

[0002] Copper-aluminum composite materials are a new type of material made by combining copper and aluminum through a composite process. They combine the advantages of copper, such as high conductivity and corrosion resistance, with aluminum, such as light weight and low cost, and are widely used in electronics, aerospace, automobile manufacturing and other fields.

[0003] In existing technologies, due to the different hardness of copper and aluminum, the bonding at the contact surfaces of copper-aluminum composite materials is not tight enough, affecting the strength performance of the composite material. Therefore, this invention provides a high-performance layered composite material containing copper and aluminum. Summary of the Invention

[0004] The purpose of this invention is to provide a high-performance layered composite material containing copper and aluminum. The layered composite material prepared by this invention not only has good strength properties but also excellent elongation properties, effectively improving the performance of the layered composite material.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-performance layered composite material containing copper and aluminum, wherein the high-performance layered composite material containing copper and aluminum is prepared by the following steps:

[0007] S1: Raw material preparation. The raw materials are pure copper plates and pure aluminum plates. The thickness of the pure copper plates is 8-10mm, and the thickness of the pure aluminum plates is 2-4mm. The pure copper plates and pure aluminum plates are cut to the same size.

[0008] S2: Raw material processing, surface pretreatment of pure copper sheet and pure aluminum sheet, the first slab is obtained after the surface pretreatment of pure copper sheet, and the second slab is obtained after the surface pretreatment of pure aluminum sheet.

[0009] S3: Preparation of coating material, the raw materials of which include copper, aluminum, silver, magnesium, anhydrous ethanol, and ammonium polyacrylate;

[0010] S4: Coating treatment, using coating material to coat one side surface of the first and second slabs and heat treatment;

[0011] S5: Welding process: After stacking and aligning the first and second slabs, with the first slab at the bottom and its coated surface facing up, and the second slab with its coated surface facing down, weld the seams around the first and second slabs to obtain a composite slab.

[0012] S6: Composite treatment. The composite slab is sent into a heat treatment furnace for heating treatment, and then taken out for rolling treatment to complete the composite treatment and obtain a high-performance layered composite material.

[0013] Further, the raw material processing method is as follows: the surfaces of pure copper and pure aluminum plates are rinsed with alcohol, then the pure copper and pure aluminum plates are immersed in hydrogen chloride solution for 2-3 minutes. After immersion, the pure copper and pure aluminum plates are rinsed with deionized water. After rinsing, the pure copper and pure aluminum plates are placed in an oven and dried at 60-80°C for 3-5 hours. Then, the contact surfaces of the pure copper and pure aluminum plates are polished with an angle grinder. Afterward, the pure copper and pure aluminum plates are immersed in hydrogen chloride solution again for 20-30 minutes. After removal, the surfaces are cleaned with deionized water and placed in an oven and dried at 120-140°C for 30-40 minutes to complete the surface pretreatment, resulting in the first and second slabs.

[0014] Furthermore, the mass concentration of the hydrogen chloride solution is 10–15%.

[0015] Furthermore, the method for preparing the coating material is as follows: copper, aluminum, silver, and magnesium are added to a mixer, the mixer is set to 200-300 r / min and stirred for 20-30 min, then anhydrous ethanol and ammonium polyacrylate are added to the mixer, the mixer is set to 300-500 r / min and stirred for 30-40 min to obtain the coating material.

[0016] Furthermore, copper, aluminum, silver, and magnesium are all selected as powders with a particle size of 1–3 μm. The mass ratio of copper, aluminum, silver, and magnesium is 1:(0.3–0.5):(0.1–0.2):(0.2–0.3). The mass of anhydrous ethanol is 120–130% of the mass of copper, and the mass of ammonium polyacrylate is 0.6–0.8% of the mass of anhydrous ethanol.

[0017] Further, the coating process is as follows: after the first slab and the second slab have completed the coating process, the coated surfaces of the first slab and the second slab are placed face up into a vibrating drying oven. The vibrating drying oven is set with a vibration frequency of 40-60 Hz, a vibration amplitude of 4-6 mm, and a temperature of 80-90 ℃. The constant temperature vibration drying process is carried out for 30-40 minutes to complete the coating process.

[0018] Furthermore, the surface coating thickness of the first slab is 12–14 μm, and the surface coating thickness of the second slab is 8–10 μm.

[0019] Further, the composite treatment method is as follows: the composite slab is fed into a heat treatment furnace, the heat treatment furnace is set to a heating rate of 20-30℃ / min, the temperature is raised to 420-440℃, held for 6-10 min, and after cooling to room temperature, the heating, holding, and cooling to room temperature steps are repeated 6-8 times. Then the heat treatment furnace is set to upper and lower temperature zones, the lower zone temperature is 850-950℃, the upper zone temperature is 450-500℃, the heating rate is 10-20℃ / min, after the upper and lower zones have reached the temperature, the temperature is held for 20-30 min, the composite slab is taken out and rolled, after the rolling process is completed and cooled to room temperature, the composite treatment is completed, and a high-performance layered composite material is obtained.

[0020] Furthermore, the rolling process is set with a single-pass reduction rate of 85% and a rolling speed of 2–4 m / s.

[0021] Furthermore, the rolling process is repeated 4 to 6 times.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. In this invention, during the preparation of the layered composite material, the surfaces of pure copper and pure aluminum plates are pretreated to create a rough structure. Then, the pure copper and pure aluminum plates are coated to ensure that the coating material is uniformly attached to the surface of the slab. The vibration drying process ensures that the coating material is uniformly attached to the slab and avoids the generation of bubbles. During the cyclic processing of the slab, the metal particles in the coating material undergo thermal expansion. The thermally expanded metal particles can expand the pore structure on the surface of the slab, so that the metal particles are tightly filled between the first and second slabs, ensuring that the first and second slabs are tightly bonded to complete the preparation of the composite material and avoiding uneven stress on the composite contact surface of the composite material, which would affect the strength performance.

[0024] 2. In this invention, by performing zoned heating treatment on the upper and lower temperatures of the composite slab, the melting points of copper and aluminum can be matched separately for zoned heating, ensuring that copper and aluminum are effectively hot-rolled at appropriate temperatures to form a composite material, ensuring that the stress of the composite material is evenly distributed when under stress, and improving the tensile properties of the composite material. Attached Figure Description

[0025] Figure 1 A flowchart is provided for the invention of a high-performance layered composite material containing copper and aluminum. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that the raw materials used in the following embodiments are all commercially available.

[0028] Example 1:

[0029] S1: Raw material preparation. The raw materials are pure copper sheet and pure aluminum sheet. The thickness of the pure copper sheet is 8mm and the thickness of the pure aluminum sheet is 2mm. The pure copper sheet and pure aluminum sheet are cut to the same size.

[0030] S2: Raw material processing, surface pretreatment of pure copper sheet and pure aluminum sheet, the first slab is obtained after the surface pretreatment of pure copper sheet, and the second slab is obtained after the surface pretreatment of pure aluminum sheet.

[0031] The raw material processing method is as follows: the surfaces of pure copper and pure aluminum plates are rinsed with alcohol, then immersed in hydrogen chloride solution for 2 minutes. After immersion, the pure copper and pure aluminum plates are rinsed with deionized water. After rinsing, the pure copper and pure aluminum plates are placed in an oven and dried at 60°C for 3 hours. Then, the contact surfaces of the pure copper and pure aluminum plates are polished with an angle grinder. After that, the pure copper and pure aluminum plates are immersed in hydrogen chloride solution again for 20 minutes. After removal, the surfaces are cleaned with deionized water and placed in an oven and dried at 120°C for 30 minutes to complete the surface pretreatment, resulting in the first and second slabs. The mass concentration of the hydrogen chloride solution is 10%.

[0032] S3: Preparation of coating material, the raw materials of which include copper, aluminum, silver, magnesium, anhydrous ethanol, and ammonium polyacrylate;

[0033] The coating material is prepared as follows: copper, aluminum, silver, and magnesium are added to a mixer, which is set to 300 r / min and stirred for 20 min. Then, anhydrous ethanol and ammonium polyacrylate are added to the mixer, which is set to 300 r / min and stirred for 30 min to obtain the coating material. Copper, aluminum, silver, and magnesium are all selected as powders with a particle size of 1 μm. The mass ratio of copper, aluminum, silver, and magnesium is 1:0.3:0.1:0.2. The mass of anhydrous ethanol is 120% of the mass of copper, and the mass of ammonium polyacrylate is 0.6% of the mass of anhydrous ethanol.

[0034] S4: Coating treatment, using coating material to coat one side surface of the first and second slabs and heat treatment;

[0035] The coating process is as follows: the coating thickness on the surface of the first slab is 12 μm, and the coating thickness on the surface of the second slab is 8 μm. After the coating process is completed, the coated surfaces of the first and second slabs are placed into a vibrating drying oven with the coating surfaces facing upwards. The vibrating drying oven is set with a vibration frequency of 40 Hz, a vibration amplitude of 4 mm, and a temperature of 80 ℃. The constant temperature vibration drying process is carried out for 30 min to complete the coating process.

[0036] S5: Welding process: After stacking and aligning the first and second slabs, with the first slab at the bottom and its coated surface facing up, and the second slab with its coated surface facing down, weld the seams around the first and second slabs to obtain a composite slab.

[0037] S6: Composite treatment. The composite slab is sent into a heat treatment furnace for heating treatment, and then taken out for rolling treatment to complete the composite treatment and obtain a high-performance layered composite material.

[0038] The composite treatment method is as follows: the composite slab is fed into a heat treatment furnace, the heating rate of which is set to 20℃ / min, the temperature is raised to 420℃, held for 6 minutes, and then cooled to room temperature. This heating, holding, and cooling process is repeated 6 times. Then, the heat treatment furnace is set to upper and lower temperature zones, with the lower zone temperature at 850℃ and the upper zone temperature at 450℃, and the heating rate at 10℃ / min. After both zones reach the set temperature, the temperature is held for 20 minutes. The composite slab is then removed and rolled. After rolling, it is cooled to room temperature to complete the composite treatment and obtain a high-performance layered composite material. The rolling process is set to a single-pass reduction rate of 85%, a rolling speed of 2m / s, and a rolling repetition count of 4 times.

[0039] Example 2:

[0040] S1: Raw material preparation. The raw materials selected are pure copper plates and pure aluminum plates. The thickness of the pure copper plates is 9mm and the thickness of the pure aluminum plates is 3mm. The pure copper plates and pure aluminum plates are cut to the same size.

[0041] S2: Raw material processing, surface pretreatment of pure copper sheet and pure aluminum sheet, the first slab is obtained after the surface pretreatment of pure copper sheet, and the second slab is obtained after the surface pretreatment of pure aluminum sheet.

[0042] The raw material processing method is as follows: the surfaces of pure copper and pure aluminum plates are rinsed with alcohol, then immersed in hydrogen chloride solution for 2.5 minutes. After immersion, the pure copper and pure aluminum plates are rinsed with deionized water. After rinsing, the pure copper and pure aluminum plates are placed in an oven and dried at 70°C for 4 hours. Then, the contact surfaces of the pure copper and pure aluminum plates are polished with an angle grinder. After that, the pure copper and pure aluminum plates are immersed in hydrogen chloride solution again for 25 minutes. After removal, the surfaces are cleaned with deionized water and placed in an oven and dried at 130°C for 35 minutes to complete the surface pretreatment, obtaining the first and second slabs. The mass concentration of the hydrogen chloride solution is 12%.

[0043] S3: Preparation of coating material, the raw materials of which include copper, aluminum, silver, magnesium, anhydrous ethanol, and ammonium polyacrylate;

[0044] The coating material is prepared as follows: copper, aluminum, silver, and magnesium are added to a mixer, which is set to 250 r / min and stirred for 25 min. Then, anhydrous ethanol and ammonium polyacrylate are added to the mixer, which is set to 400 r / min and stirred for 35 min to obtain the coating material. Copper, aluminum, silver, and magnesium are all selected as powders with a particle size of 2 μm. The mass ratio of copper, aluminum, silver, and magnesium is 1:0.4:0.15:0.25. The mass of anhydrous ethanol is 125% of the mass of copper, and the mass of ammonium polyacrylate is 0.7% of the mass of anhydrous ethanol.

[0045] S4: Coating treatment, using coating material to coat one side surface of the first and second slabs and heat treatment;

[0046] The coating process is as follows: the coating thickness on the surface of the first slab is 13 μm, and the coating thickness on the surface of the second slab is 9 μm. After the coating process is completed, the coated surfaces of the first and second slabs are placed into a vibrating drying oven with the coating surfaces facing upwards. The vibrating drying oven is set with a vibration frequency of 50 Hz, a vibration amplitude of 5 mm, and a temperature of 85 ℃. The constant temperature vibration drying process is carried out for 35 min to complete the coating process.

[0047] S5: Welding process: After stacking and aligning the first and second slabs, with the first slab at the bottom and its coated surface facing up, and the second slab with its coated surface facing down, weld the seams around the first and second slabs to obtain a composite slab.

[0048] S6: Composite treatment. The composite slab is sent into a heat treatment furnace for heating treatment, and then taken out for rolling treatment to complete the composite treatment and obtain a high-performance layered composite material.

[0049] The composite treatment method is as follows: the composite slab is fed into a heat treatment furnace, the heating rate of which is set to 25℃ / min, the temperature is raised to 430℃, held for 8 minutes, and then cooled to room temperature. This cycle of heating, holding, and cooling to room temperature is repeated 7 times. Then, the heat treatment furnace is set to upper and lower temperature zones, with the lower zone temperature at 900℃ and the upper zone temperature at 470℃, and the heating rate at 15℃ / min. After both zones reach the required temperature, the temperature is held for 25 minutes. The composite slab is then removed and rolled. After rolling, it is cooled to room temperature to complete the composite treatment and obtain a high-performance layered composite material. The rolling process is set to a single-pass reduction rate of 85%, a rolling speed of 3m / s, and a rolling repetition count of 5 times.

[0050] Example 3:

[0051] S1: Raw material preparation. The raw materials are pure copper sheet and pure aluminum sheet. The thickness of the pure copper sheet is 10mm and the thickness of the pure aluminum sheet is 4mm. The pure copper sheet and pure aluminum sheet are cut to the same size.

[0052] S2: Raw material processing, surface pretreatment of pure copper sheet and pure aluminum sheet, the first slab is obtained after the surface pretreatment of pure copper sheet, and the second slab is obtained after the surface pretreatment of pure aluminum sheet.

[0053] The raw material processing method is as follows: the surfaces of pure copper and pure aluminum plates are rinsed with alcohol, then immersed in hydrogen chloride solution for 3 minutes. After immersion, the pure copper and pure aluminum plates are rinsed with deionized water. After rinsing, the pure copper and pure aluminum plates are placed in an oven and dried at 80°C for 5 hours. Then, the contact surfaces of the pure copper and pure aluminum plates are polished with an angle grinder. After that, the pure copper and pure aluminum plates are immersed in hydrogen chloride solution again for 30 minutes. After removal, the surfaces are cleaned with deionized water and placed in an oven and dried at 140°C for 40 minutes to complete the surface pretreatment, obtaining the first and second slabs. The mass concentration of the hydrogen chloride solution is 15%.

[0054] S3: Preparation of coating material, the raw materials of which include copper, aluminum, silver, magnesium, anhydrous ethanol, and ammonium polyacrylate;

[0055] The coating material is prepared as follows: copper, aluminum, silver, and magnesium are added to a mixer, which is set to 300 r / min and stirred for 30 min. Then, anhydrous ethanol and ammonium polyacrylate are added to the mixer, which is set to 500 r / min and stirred for 40 min to obtain the coating material. Copper, aluminum, silver, and magnesium are all selected as powders with a particle size of 3 μm. The mass ratio of copper, aluminum, silver, and magnesium is 1:0.5:0.2:0.3. The mass of anhydrous ethanol is 130% of the mass of copper, and the mass of ammonium polyacrylate is 0.8% of the mass of anhydrous ethanol.

[0056] S4: Coating treatment, using coating material to coat one side surface of the first and second slabs and heat treatment;

[0057] The coating process is as follows: the coating thickness on the surface of the first slab is 14 μm, and the coating thickness on the surface of the second slab is 10 μm. After the coating process is completed, the coated surfaces of the first and second slabs are placed into a vibrating drying oven with the coating surfaces facing upwards. The vibration drying oven is set with a vibration frequency of 60 Hz, a vibration amplitude of 6 mm, and a temperature of 90 ℃. The constant temperature vibration drying process is carried out for 40 min to complete the coating process.

[0058] S5: Welding process: After stacking and aligning the first and second slabs, with the first slab at the bottom and its coated surface facing up, and the second slab with its coated surface facing down, weld the seams around the first and second slabs to obtain a composite slab.

[0059] S6: Composite treatment. The composite slab is sent into a heat treatment furnace for heating treatment, and then taken out for rolling treatment to complete the composite treatment and obtain a high-performance layered composite material.

[0060] The composite treatment method is as follows: the composite slab is fed into a heat treatment furnace, the heating rate of which is set to 30℃ / min, the temperature is raised to 440℃, held for 10min, and then cooled to room temperature. This cycle of heating, holding, and cooling to room temperature is repeated 8 times. Then, the heat treatment furnace is set to upper and lower temperature zones, with the lower zone temperature at 950℃ and the upper zone temperature at 500℃, and the heating rate at 20℃ / min. After both zones reach the required temperature, the temperature is held for 30min. The composite slab is then removed and rolled. After rolling, it is cooled to room temperature to complete the composite treatment and obtain a high-performance layered composite material. The rolling process is set to a single-pass reduction rate of 85%, a rolling speed of 4m / s, and a rolling repetition count of 6 times.

[0061] Comparative Example 1: The difference between this comparative example and Example 1 is that this comparative example did not undergo partitioned heating in S6, and was heated to 800°C as a whole.

[0062] Comparative Example 2 differs from Example 1 in that the pure copper and pure aluminum plates were not pretreated in this comparative example.

[0063] Comparative Example 3 differs from Example 1 in that the comparative example does not include the steps of cyclically heating, holding, and cooling to room temperature in S6.

[0064] Comparative Example 4: The difference between this comparative example and Example 1 is that this comparative example does not contain S3 and S4.

[0065] Performance testing: The performance of the layered composite materials prepared in Examples 1, 2, 3, 1, 2, 3, and 4 (Comparative Examples) was tested.

[0066] In the performance test, the test methods in GB / T 228.1-2021 were used to test the tensile strength and elongation properties of the layered composite materials prepared in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Comparative Example 4.

[0067] The shear strength properties of the layered composite materials prepared in Examples 1, 2, 3, 1, 2, 3 and 4 were tested using the test methods in GB / T 8547-2019.

[0068] After performance testing, the strength and elongation properties of the layered composite materials prepared in Comparative Examples 1, 2, 3, and 4 were all lower than those in Examples 1, 2, and 3. This indicates that in the preparation process of the layered composite material, the surface pretreatment of pure copper and pure aluminum plates creates a rough structure on their surfaces. Subsequently, the coating process on the pure copper and pure aluminum plates ensures that the coating material adheres uniformly to the surface of the slab. The vibration drying process ensures that the coating material adheres uniformly to the slab and avoids the generation of air bubbles. During the cyclic processing of the slab, the metal particles in the coating material undergo thermal expansion. The thermally expanded metal particles can expand the pore structure on the surface of the slab, allowing the metal particles to tightly fill the space between the first and second slabs. This ensures that the first and second slabs are tightly bonded, completing the preparation of the composite material and preventing uneven stress on the composite contact surface from affecting the strength properties.

[0069] By performing zoned heating treatment on the upper and lower parts of the composite slab, the melting points of copper and aluminum can be matched separately for zoned heating. This ensures that copper and aluminum are effectively hot-rolled at appropriate temperatures to form a composite material, ensuring that the stress of the composite material is evenly distributed under stress and improving the tensile properties of the composite material.

[0070] By comparing and analyzing the relevant data in the table, it can be seen that the layered composite material prepared by this invention not only has good strength properties but also excellent elongation properties. This indicates that the high-performance layered composite material containing copper and aluminum provided by this invention has a broader market prospect and is more suitable for widespread application.

[0071] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-performance layered composite material containing copper and aluminum, characterized in that: The high-performance layered composite material containing copper and aluminum is prepared by the following steps: S1: Raw material preparation. The raw materials are pure copper plates and pure aluminum plates. The thickness of the pure copper plates is 8-10mm, and the thickness of the pure aluminum plates is 2-4mm. The pure copper plates and pure aluminum plates are cut to the same size. S2: Raw material processing, surface pretreatment of pure copper sheet and pure aluminum sheet, the first slab is obtained after the surface pretreatment of pure copper sheet, and the second slab is obtained after the surface pretreatment of pure aluminum sheet. S3: Preparation of coating material, the raw materials of which include copper, aluminum, silver, magnesium, anhydrous ethanol, and ammonium polyacrylate; S4: Coating treatment, using coating material to coat one side surface of the first and second slabs and heat treatment; S5: Welding process: After stacking and aligning the first and second slabs, with the first slab at the bottom and its coated surface facing up, and the second slab with its coated surface facing down, weld the seams around the first and second slabs to obtain a composite slab. S6: Composite treatment. The composite slab is sent into a heat treatment furnace for heating treatment, and then taken out for rolling treatment to complete the composite treatment and obtain a high-performance layered composite material.

2. The high-performance layered composite material containing copper and aluminum according to claim 1, characterized in that, The raw material processing method is as follows: the surfaces of pure copper and pure aluminum plates are rinsed with alcohol, then immersed in hydrogen chloride solution for 2-3 minutes. After immersion, the pure copper and pure aluminum plates are rinsed with deionized water. After rinsing, the pure copper and pure aluminum plates are placed in an oven and dried at 60-80°C for 3-5 hours. Then, the contact surfaces of the pure copper and pure aluminum plates are polished with an angle grinder. Afterward, the pure copper and pure aluminum plates are immersed in hydrogen chloride solution again for 20-30 minutes. After removal, the surfaces are cleaned with deionized water and placed in an oven and dried at 120-140°C for 30-40 minutes to complete the surface pretreatment, resulting in the first and second slabs.

3. The high-performance layered composite material containing copper and aluminum according to claim 2, characterized in that, The mass concentration of the hydrogen chloride solution is 10-15%.

4. The high-performance layered composite material containing copper and aluminum according to claim 1, characterized in that, The method for preparing the coating material is as follows: copper, aluminum, silver and magnesium are added to a mixer, the mixer is set to 200-300 r / min and stirred for 20-30 min, then anhydrous ethanol and ammonium polyacrylate are added to the mixer, the mixer is set to 300-500 r / min and stirred for 30-40 min to obtain the coating material.

5. The high-performance layered composite material containing copper and aluminum according to claim 4, characterized in that, Copper, aluminum, silver, and magnesium are all selected as powders with a particle size of 1-3 μm. The mass ratio of copper, aluminum, silver, and magnesium is 1:(0.3-0.5):(0.1-0.2):(0.2-0.3). The mass of anhydrous ethanol is 120-130% of the mass of copper, and the mass of ammonium polyacrylate is 0.6-0.8% of the mass of anhydrous ethanol.

6. The high-performance layered composite material containing copper and aluminum according to claim 1, characterized in that, The coating process is as follows: After the first and second slabs are coated, the coated surfaces of the first and second slabs are placed into a vibrating drying oven with the coated surfaces facing upwards. The vibrating drying oven is set with a vibration frequency of 40-60 Hz, a vibration amplitude of 4-6 mm, and a temperature of 80-90 ℃. The constant temperature vibration drying process is carried out for 30-40 minutes to complete the coating process.

7. The high-performance layered composite material containing copper and aluminum according to claim 1, characterized in that, The surface coating thickness of the first slab is 12–14 μm, and the surface coating thickness of the second slab is 8–10 μm.

8. The high-performance layered composite material containing copper and aluminum according to claim 1, characterized in that, The composite treatment method is as follows: the composite slab is fed into a heat treatment furnace, the heating rate of which is set to 20-30℃ / min, and the temperature is raised to 420-440℃. After holding at this temperature for 6-10 minutes, the process is repeated 6-8 times, including the heating, holding, and cooling process. Then, the heat treatment furnace is set to upper and lower temperature zones, with the lower zone temperature at 850-950℃ and the upper zone temperature at 450-500℃. The heating rate is 10-20℃ / min. After both zones reach the required temperature, the temperature is held for 20-30 minutes. The composite slab is then removed and rolled. After rolling, the slab is cooled to room temperature to complete the composite treatment and obtain a high-performance layered composite material.

9. The high-performance layered composite material containing copper and aluminum according to claim 8, characterized in that, The rolling process is set with a single-pass reduction rate of 85% and a rolling speed of 2-4 m / s.

10. The high-performance layered composite material containing copper and aluminum according to claim 8, characterized in that, The rolling process is repeated 4 to 6 times.

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