Processing technology of radiator base copper profile for 5G base station

Abstract

The invention relates to the technical field of copper profiles, in particular to a processing technology of a radiator base copper profile for a 5G base station. The method specifically comprises the following steps that firstly, the radiator base copper profile is subjected to cleaning pretreatment, and the pretreated radiator base copper profile is obtained; and secondly, corrosion-resistant spraying paint is sprayed to the surface of the pretreated radiator base copper profile through the hypersonic flame spraying technology, a corrosion-resistant layer is formed, and the corrosion-resistant radiator base copper profile is obtained. The corrosion-resistant spray coating is obtained by mixing the following raw material components in parts by weight: 96-98% of nickel powder and 2-4% of modified graphene. The modified graphene comprises any one of nickel / graphene, nickel / rare earth doped graphene and nickel / rare earth-zirconium doped graphene, and is prepared from single-layer graphene oxide.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of copper profiles, in particular to a processing technology of a radiator base copper profile for a 5G base station. BACKGROUND

[0002] The large-scale deployment of 5G base stations is facing the dual challenges of extremely complex environment and ultra-high power density. 5G base stations are widely distributed in outdoor iron towers, rooftops, lamp poles, street equipment boxes and other scenes, and are exposed to extremely cold and hot, high humidity condensation, coastal salt spray, sand erosion and strong solar radiation for a long time. As a core heat conduction interface directly attached to high heat devices, the performance of the radiator base directly determines the signal stability and service life of the 5G base station in harsh environments.

[0003] However, the conventional machine-processed radiator base copper profile cannot adapt well to such extreme conditions, and is prone to oxidation and corrosion, and the corrosion products can greatly increase the thermal resistance of the heat conduction interface, thereby reducing the heat dissipation of the radiator. Therefore, how to enhance the weather resistance of the radiator base copper profile in extreme environments has become a difficult problem to be solved.

[0004] In summary, in order to solve the above problems, the application prepares a radiator base copper profile for a 5G base station, which has important significance. SUMMARY

[0005] The purpose of the present application is to provide a processing technology of a radiator base copper profile for a 5G base station to solve the problems raised in the background.

[0006] In order to solve the above technical problems, the application provides the following technical scheme: A processing technology of a radiator base copper profile for a 5G base station, comprising the following steps: Step 1: cleaning pretreatment of the radiator base copper profile to obtain a pretreated radiator base copper profile; Step 2: using supersonic flame spraying technology to spray corrosion-resistant paint on the surface of the pretreated radiator base copper profile to form a corrosion-resistant layer and obtain a corrosion-resistant radiator base copper profile.

[0007] More preferably, the cleaning pretreatment method is: (1) Put the radiator base copper profile into a 5wt% sodium hydroxide aqueous solution, soak at 60-80 DEG C for 3-6 min, take out, wash and dry; (2) Then immerse the radiator base copper profile in a copper bright cleaner, soak at 40-50 DEG C for 3-6 min, take out, wash, vacuum dry, complete the cleaning pretreatment, and obtain a pretreated radiator base copper profile.

[0008] The purpose of the cleaning pretreatment is to remove the oil stains and uneven oxide layer on the surface of the radiator base copper profile during the processing, so as to facilitate the subsequent processing.

[0009] More preferably, the corrosion-resistant spray paint is obtained by mixing the following raw material components: 96-98% nickel powder, 2-4% modified graphene by weight.

[0010] More preferably, the modified graphene includes any one of nickel / graphene, nickel / rare earth doped graphene, nickel / rare earth-zirconium doped graphene.

[0011] More preferably, if the modified graphene is nickel / graphene, the preparation method is: adding graphene oxide into the nickel plating solution, stirring and dispersing uniformly, and water bath heating to 75-85℃, finally slowly adding sodium hypophosphite aqueous solution into the solution, after the addition is completed, continuing to stir for 30-60min, filtering, washing, drying, calcining to obtain nickel / graphene.

[0012] More preferably, the parameters of the nickel plating solution are: the concentration of each raw material component in the nickel plating solution is 20-25g / L of nickel chloride, 50-70g / L of sodium citrate, 35-50g / L of boric acid, adding sodium hydroxide to adjust the pH to 9-10, and the solvent is deionized water.

[0013] More preferably, the concentration of the sodium hypophosphite aqueous solution is 35-50g / L.

[0014] More preferably, the ratio of the three, graphene oxide, nickel plating solution, sodium hypophosphite aqueous solution, is (1-3)g:1L:1L.

[0015] More preferably, the graphene oxide is single-layer graphene oxide.

[0016] More preferably, if the modified graphene is nickel / rare earth doped graphene, the preparation method is: (1) disperse rare earth metal chloride and graphene oxide into deionized water, stir and heat to 110-120℃ under a closed high-pressure environment for 6-12h, end the reaction, filter, wash, dry to obtain rare earth doped graphene; (2) disperse the rare earth doped graphene into deionized water and add a surfactant, stir and mix for 10-30min, filter, wash, dry to obtain modified rare earth doped graphene; (3) add the modified rare earth doped graphene into the nickel plating solution, stir and disperse uniformly, and water bath heat to 75-85℃, finally slowly add sodium hypophosphite aqueous solution into the solution, after the addition is completed, continue to stir for 30-60min, filter, wash, dry, calcine to obtain nickel / rare earth doped graphene.

[0017] More preferably, the rare earth metal chloride, graphene oxide, deionized water are in a ratio of (2-6) g:3 g:1 L.

[0018] More preferably, the rare earth doped graphene, surfactant, deionized water are in a mass ratio of 3 g:10 g:1 L.

[0019] More preferably, the modified rare earth doped graphene, nickel plating solution, sodium hypophosphite aqueous solution are in a ratio of (1-3) g:1 L:1 L.

[0020] More preferably, the rare earth metal chloride is one or a combination of cerium chloride and lanthanum chloride.

[0021] More preferably, the rare earth metal chloride is a mixture of cerium chloride and lanthanum chloride in a mass ratio of (1-3):1.

[0022] More preferably, the surfactant is an anionic surfactant.

[0023] More preferably, the calcination parameters are: under vacuum atmosphere, vacuum degree ≤5×10 -2 Pa, calcination temperature is 850-900℃, and calcination time is 1-3 h.

[0024] More preferably, if the modified graphene is nickel / rare earth-zirconium doped graphene, the preparation method is: (1) disperse the rare earth metal chloride, zirconium chloride, and graphene oxide into deionized water, heat to 110-120℃ under stirring in a sealed high-pressure environment for 6-12 h, filter, wash, and dry to obtain rare earth-zirconium doped graphene; (2) disperse the rare earth-zirconium doped graphene into deionized water, add a surfactant, stir and mix for 10-30 min, filter, wash, and dry to obtain modified rare earth-zirconium doped graphene; (3) add the modified rare earth-zirconium doped graphene into a nickel plating solution, stir and disperse uniformly, heat to 75-85℃ in a water bath, slowly add sodium hypophosphite aqueous solution into the solution, continue to stir for 30-60 min after the addition is completed, filter, wash, dry, and calcine to obtain nickel / rare earth-zirconium doped graphene; More preferably, the rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water are in a ratio of (2-6) g:(0.1-0.3) g:3 g:1 L; the amount of zirconium chloride is 5% of the mass of the rare earth metal chloride.

[0025] More preferably, the rare earth-zirconium doped graphene, surfactant, and deionized water are in a mass ratio of 3 g:10 g:1 L. Preferably, the ratio of the modified rare earth-zirconium-doped graphene, the nickel plating solution, and the sodium hypophosphite aqueous solution is (1~3) g:1 L:1 L.

[0026] Preferably, the parameters of the supersonic flame spraying technology are: oxygen flow rate of 1~1.2L / min, oxygen pressure of 1.4~1.6MPa, propane flow rate of 100~110L / min, propane pressure of 0.3~0.5MPa, nitrogen powder delivery pressure of 0.5~0.6MPa, and spraying distance of 180~200mm.

[0027] Preferably, the thickness of the corrosion-resistant layer is ≥0.1mm.

[0028] Compared with the prior art, the beneficial effects achieved by the present invention are: (1) In this invention, a layer of nickel is sprayed onto the surface of the copper profile of the radiator base using supersonic flame spraying technology to improve the corrosion resistance of the copper profile and thus ensure the long-term heat dissipation performance of the copper profile of the radiator base. However, if the nickel layer is sprayed directly, the heat dissipation performance of the copper profile of the radiator base will be greatly reduced. Therefore, in this invention, nickel powder and graphene are combined. Through the action of graphene, the corrosion resistance of the copper profile of the radiator base is enhanced, and its heat dissipation performance is also guaranteed.

[0029] (2) Considering the problem of graphene's tendency to agglomerate, and based on the requirement to ensure the heat dissipation performance of the copper profile of the radiator base, this invention designs to coat it with nickel to obtain nickel / graphene. The graphene used in the nickel / graphene is single-layer graphene oxide because: single-layer graphene oxide has better dispersibility and thermal conductivity; therefore, after nickel coating, the obtained nickel / graphene can better improve the graphene agglomeration problem, and the corrosion-resistant layer obtained by mixing and spraying it with nickel powder is more dense; thus, the corrosion resistance of the copper profile of the radiator base is effectively enhanced, and the heat dissipation performance is further guaranteed.

[0030] (3) The solution further considers the interfacial thermal resistance between nickel and graphene. Therefore, the obtained nickel / graphene still has significant shortcomings in ensuring the heat dissipation performance of the copper profile of the radiator base. Based on this, the present invention further designs the doping of rare earth metals on the surface of single-layer graphene to obtain rare earth metal-doped graphene, and then coats it with nickel to obtain nickel / rare earth-doped graphene. Compared with nickel / graphene, the nickel / rare earth-doped graphene has better corrosion resistance and enhanced heat dissipation performance.

[0031] (4) In the selection of rare earth metals for doping graphene, the present invention prefers to use a combination of cerium and lanthanum. The reason is that: compared with the other two, cerium can optimize the interface and improve the bonding force between nickel and graphene, which is more conducive to improving corrosion resistance. In addition, cerium also has a certain effect on improving the interfacial thermal resistance between nickel and graphene. Compared with the other two, lanthanum is more likely to improve the interfacial thermal resistance between nickel and graphene. Therefore, the scheme uses a combination of cerium and lanthanum to form a cerium / lanthanum rare earth co-doping effect, which is more conducive to optimizing the interface structure, thereby enhancing the corrosion resistance of the copper profile of the heat sink base and ensuring its heat dissipation performance.

[0032] (5) In addition, although nickel / rare earth doped graphene has greatly improved the corrosion resistance and heat dissipation performance of the copper profile of the radiator base under the action of rare earth elements, zirconium is further introduced into the rare earth doping process in the scheme based on the optimization consideration of the performance of the copper profile of the radiator base. On the one hand, zirconium can be co-doped with cerium to form nanocrystals, which is beneficial to improving the quality of the sprayed coating. On the other hand, zirconium can occupy the defect sites of graphene, reduce the active corrosion initiation point, and has a significant promoting effect on the corrosion resistance of the copper profile of the radiator base. However, since excessive doping of the third metal may lead to electron conduction, which in turn affects the heat dissipation performance, the amount of zirconium doping should be controlled.

[0033] In summary, this invention improves the corrosion resistance of the copper profile of the radiator base by spraying a nickel layer onto its surface; further, by introducing nickel / graphene into the nickel layer, it not only enhances the corrosion resistance but also reduces the impact of the sprayed layer on the heat dissipation performance of the copper profile of the radiator base; and further, by doping the graphene with rare earth elements and zirconium, the copper profile of the radiator base ultimately achieves excellent corrosion resistance while also greatly ensuring its heat dissipation performance. Detailed Implementation

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that the following quantities are by weight, and there are no special restrictions on the suppliers of all raw materials involved in this invention. Exemplary examples include: In the following examples, graphene oxide, monolayer, with a sheet diameter <10μm and a thickness of 10nm; nickel powder, with a particle size of 50nm; were purchased from Shanghai Buwei Applied Materials Technology Co., Ltd.

[0036] Sodium hypophosphite, purity ≥99.5%; sodium citrate, purity ≥99.5%; cerium chloride, purity ≥99%; lanthanum chloride, purity ≥99%; sodium dodecyl sulfate, purity ≥99%; all purchased from Hubei Yongkuo Technology Co., Ltd. Nickel chloride, purity ≥99.99%; boric acid, purity ≥99.5%; purchased from Shanghai Dingmiao Chemical Technology Co., Ltd. Preparatory step 1: Disperse nickel chloride, sodium citrate, and boric acid in deionized water, and add sodium hydroxide to adjust the pH to 9.5 to prepare the nickel plating solution; The parameters of the nickel plating solution are as follows: the concentration of each raw material component in each liter of nickel plating solution is: nickel chloride 24g / L, sodium citrate 60g / L, boric acid 45g / L, the solvent is deionized water, and the pH is 9.5.

[0037] Preparatory step 2: Disperse sodium hypophosphite in deionized water to prepare a 40 g / L sodium hypophosphite aqueous solution.

[0038] Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Cerium chloride and lanthanum chloride are mixed and compounded in a mass ratio of 2:1 to obtain rare earth metal chlorides; S22: Preparation of nickel / rare earth-zirconium-doped graphene: (1) Rare earth metal chloride, zirconium chloride, and graphene oxide were dispersed in deionized water and stirred and heated to 115°C for 9 hours under a closed high-pressure environment. After the reaction was completed, the graphene was filtered, washed, and dried to obtain rare earth-zirconium-doped graphene; (2) Rare earth-zirconium-doped graphene was dispersed in deionized water and sodium dodecyl sulfate was added. The mixture was stirred and mixed for 20 minutes. After the mixture was filtered, washed, and dried, modified rare earth-zirconium-doped graphene was obtained; (3) Modified rare earth-zirconium-doped graphene was added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution was slowly added to the solution. After the addition was completed, the mixture was stirred and reacted for 45 minutes. After the mixture was filtered, washed, dried, and calcined, nickel / rare earth-zirconium-doped graphene was obtained. The ratio of rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water is 4g:0.2g:3g:1L. The mass ratio of rare earth-zirconium-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified nickel / rare earth-zirconium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S23: Nickel powder and nickel / rare earth-zirconium-doped graphene are mixed evenly at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S24: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated radiator base copper profile to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0039] Example 2: Example 2 is based on Example 1, but the proportion of rare earth metal chlorides is adjusted, while other processes remain unchanged. Specifically, it is a processing technology for a copper profile for a 5G base station heat sink base. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Cerium chloride and lanthanum chloride are mixed and compounded in a mass ratio of 1:1 to obtain rare earth metal chlorides; S22: Preparation of nickel / rare earth-zirconium-doped graphene: (1) Rare earth metal chloride, zirconium chloride, and graphene oxide were dispersed in deionized water and stirred and heated to 115°C for 9 hours under a closed high-pressure environment. After the reaction was completed, the graphene was filtered, washed, and dried to obtain rare earth-zirconium-doped graphene; (2) Rare earth-zirconium-doped graphene was dispersed in deionized water and sodium dodecyl sulfate was added. The mixture was stirred and mixed for 20 minutes. After the mixture was filtered, washed, and dried, modified rare earth-zirconium-doped graphene was obtained; (3) Modified rare earth-zirconium-doped graphene was added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution was slowly added to the solution. After the addition was completed, the mixture was stirred and reacted for 45 minutes. After the mixture was filtered, washed, dried, and calcined, nickel / rare earth-zirconium-doped graphene was obtained. The ratio of rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water is 4g:0.2g:3g:1L. The mass ratio of rare earth-zirconium-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified nickel / rare earth-zirconium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S23: Nickel powder and nickel / rare earth-zirconium-doped graphene are mixed evenly at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S24: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated radiator base copper profile to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0040] Example 3: Example 3 is based on Example 1, but with adjustments made to the proportion of rare earth metal chlorides, while keeping other processes unchanged. Specifically, it is a processing technology for a copper profile for a 5G base station heat sink base. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Cerium chloride and lanthanum chloride are mixed and compounded in a mass ratio of 3:1 to obtain rare earth metal chlorides; S22: Preparation of nickel / rare earth-zirconium-doped graphene: (1) Rare earth metal chloride, zirconium chloride, and graphene oxide were dispersed in deionized water and stirred and heated to 115°C for 9 hours under a closed high-pressure environment. After the reaction was completed, the graphene was filtered, washed, and dried to obtain rare earth-zirconium-doped graphene; (2) Rare earth-zirconium-doped graphene was dispersed in deionized water and sodium dodecyl sulfate was added. The mixture was stirred and mixed for 20 minutes. After the mixture was filtered, washed, and dried, modified rare earth-zirconium-doped graphene was obtained; (3) Modified rare earth-zirconium-doped graphene was added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution was slowly added to the solution. After the addition was completed, the mixture was stirred and reacted for 45 minutes. After the mixture was filtered, washed, dried, and calcined, nickel / rare earth-zirconium-doped graphene was obtained. The ratio of rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water is 4g:0.2g:3g:1L. The mass ratio of rare earth-zirconium-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified nickel / rare earth-zirconium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S23: Nickel powder and nickel / rare earth-zirconium-doped graphene are mixed evenly at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S24: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated radiator base copper profile to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0041] Example 4: Example 4 is based on Example 1, but with adjustments made to the amount of rare earth metal chlorides, while keeping other processes unchanged. Specifically, it is a processing technology for a copper profile for a 5G base station heat sink base. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Cerium chloride and lanthanum chloride are mixed and compounded in a mass ratio of 2:1 to obtain rare earth metal chlorides; S22: Preparation of nickel / rare earth-zirconium-doped graphene: (1) Rare earth metal chloride, zirconium chloride, and graphene oxide were dispersed in deionized water and stirred and heated to 115°C for 9 hours under a closed high-pressure environment. After the reaction was completed, the graphene was filtered, washed, and dried to obtain rare earth-zirconium-doped graphene; (2) Rare earth-zirconium-doped graphene was dispersed in deionized water and sodium dodecyl sulfate was added. The mixture was stirred and mixed for 20 minutes. After the mixture was filtered, washed, and dried, modified rare earth-zirconium-doped graphene was obtained; (3) Modified rare earth-zirconium-doped graphene was added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution was slowly added to the solution. After the addition was completed, the mixture was stirred and reacted for 45 minutes. After the mixture was filtered, washed, dried, and calcined, nickel / rare earth-zirconium-doped graphene was obtained. The ratio of rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water is 2g:0.1g:3g:1L. The mass ratio of rare earth-zirconium-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified nickel / rare earth-zirconium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S23: Nickel powder and nickel / rare earth-zirconium-doped graphene are mixed evenly at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S24: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated radiator base copper profile to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0042] Example 5: Example 5 is based on Example 1, but with adjustments made to the amount of rare earth metal chlorides, while keeping other processes unchanged. Specifically, it is a processing technology for a copper profile for a 5G base station heat sink base. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Cerium chloride and lanthanum chloride are mixed and compounded in a mass ratio of 2:1 to obtain rare earth metal chlorides; S22: Preparation of nickel / rare earth-zirconium-doped graphene: (1) Rare earth metal chloride, zirconium chloride, and graphene oxide were dispersed in deionized water and stirred and heated to 115°C for 9 hours under a closed high-pressure environment. After the reaction was completed, the graphene was filtered, washed, and dried to obtain rare earth-zirconium-doped graphene; (2) Rare earth-zirconium-doped graphene was dispersed in deionized water and sodium dodecyl sulfate was added. The mixture was stirred and mixed for 20 minutes. After the mixture was filtered, washed, and dried, modified rare earth-zirconium-doped graphene was obtained; (3) Modified rare earth-zirconium-doped graphene was added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution was slowly added to the solution. After the addition was completed, the mixture was stirred and reacted for 45 minutes. After the mixture was filtered, washed, dried, and calcined, nickel / rare earth-zirconium-doped graphene was obtained. The ratio of rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water is 6g:0.3g:3g:1L. The mass ratio of rare earth-zirconium-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified nickel / rare earth-zirconium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S23: Nickel powder and nickel / rare earth-zirconium-doped graphene are mixed evenly at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S24: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated radiator base copper profile to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0043] Example 6: Example 6 is based on Example 1, but with adjustments made to the amount of nickel / rare earth-zirconium-doped graphene, while keeping other processes unchanged. Specifically, it is a processing technology for a copper profile for a 5G base station heat sink base. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Cerium chloride and lanthanum chloride are mixed and compounded in a mass ratio of 2:1 to obtain rare earth metal chlorides; S22: Preparation of nickel / rare earth-zirconium-doped graphene: (1) Rare earth metal chloride, zirconium chloride, and graphene oxide were dispersed in deionized water and stirred and heated to 115°C for 9 hours under a closed high-pressure environment. After the reaction was completed, the graphene was filtered, washed, and dried to obtain rare earth-zirconium-doped graphene; (2) Rare earth-zirconium-doped graphene was dispersed in deionized water and sodium dodecyl sulfate was added. The mixture was stirred and mixed for 20 minutes. After the mixture was filtered, washed, and dried, modified rare earth-zirconium-doped graphene was obtained; (3) Modified rare earth-zirconium-doped graphene was added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution was slowly added to the solution. After the addition was completed, the mixture was stirred and reacted for 45 minutes. After the mixture was filtered, washed, dried, and calcined, nickel / rare earth-zirconium-doped graphene was obtained. The ratio of rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water is 4g:0.2g:3g:1L. The mass ratio of rare earth-zirconium-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified nickel / rare earth-zirconium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S23: Mix nickel powder and nickel / rare earth-zirconium-doped graphene at a mass ratio of 98:2 to obtain a corrosion-resistant spray coating. S24: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated radiator base copper profile to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0044] Example 7: Example 7 is based on Example 1, but with adjustments made to the amount of nickel / rare earth-zirconium-doped graphene, while keeping other processes unchanged. Specifically, it is a processing technology for a copper profile for a 5G base station heat sink base. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Cerium chloride and lanthanum chloride are mixed and compounded in a mass ratio of 2:1 to obtain rare earth metal chlorides; S22: Preparation of nickel / rare earth-zirconium-doped graphene: (1) Rare earth metal chloride, zirconium chloride, and graphene oxide were dispersed in deionized water and stirred and heated to 115°C for 9 hours under a closed high-pressure environment. After the reaction was completed, the graphene was filtered, washed, and dried to obtain rare earth-zirconium-doped graphene; (2) Rare earth-zirconium-doped graphene was dispersed in deionized water and sodium dodecyl sulfate was added. The mixture was stirred and mixed for 20 minutes. After the mixture was filtered, washed, and dried, modified rare earth-zirconium-doped graphene was obtained; (3) Modified rare earth-zirconium-doped graphene was added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution was slowly added to the solution. After the addition was completed, the mixture was stirred and reacted for 45 minutes. After the mixture was filtered, washed, dried, and calcined, nickel / rare earth-zirconium-doped graphene was obtained. The ratio of rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water is 4g:0.2g:3g:1L. The mass ratio of rare earth-zirconium-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified nickel / rare earth-zirconium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S23: Mix nickel powder and nickel / rare earth-zirconium-doped graphene at a mass ratio of 96:4 to obtain a corrosion-resistant spray coating. S24: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated radiator base copper profile to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0045] Example 8: Example 8 is based on Example 1, with the following adjustment: a nickel / rare earth doped graphene is mixed and compounded with nickel powder to obtain a corrosion-resistant spray coating. Other processes remain unchanged. Specifically, it is a processing technology for a copper profile of a 5G base station heat sink base. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Cerium chloride and lanthanum chloride are mixed and compounded in a mass ratio of 2:1 to obtain rare earth metal chlorides; S22: Preparation of nickel / rare earth doped graphene: (1) Rare earth metal chloride and graphene oxide are dispersed in deionized water and stirred and heated to 115°C for 9 hours under a closed high pressure environment. After the reaction is completed, the graphene is filtered, washed and dried to obtain rare earth doped graphene; (2) Rare earth doped graphene is dispersed in deionized water and sodium dodecyl sulfate is added. The mixture is stirred and mixed for 20 minutes. After the mixture is filtered, washed and dried to obtain modified rare earth doped graphene; (3) Modified rare earth doped graphene is added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution is slowly added to the solution. After the addition is completed, the mixture is stirred and reacted for 45 minutes. After the mixture is filtered, washed, dried and calcined to obtain nickel / rare earth doped graphene. The ratio of rare earth metal chloride, graphene oxide, and deionized water is 4g:3g:1L. The mass ratio of rare earth-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified nickel / rare earth doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S23: Nickel powder and nickel / rare earth doped graphene are mixed evenly at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S24: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated radiator base copper profile to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0046] Example 9: Example 9 is based on Example 1, with the following adjustment: a corrosion-resistant spray coating is obtained by mixing and compounding nickel / graphene with nickel powder, while other processes remain unchanged. Specifically, it is a processing technology for a copper profile of a 5G base station heat sink base. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Preparation of nickel / graphene: Add graphene oxide to the nickel plating solution, stir to disperse evenly, and heat to 80°C in a water bath. Finally, slowly add sodium hypophosphite aqueous solution to the solution. After the addition is complete, continue stirring and reacting for 45 minutes. After filtration, washing, drying, and calcination, nickel / graphene is obtained. The ratio of graphene oxide, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L. The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S22: Mix nickel powder and nickel / graphene at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S23: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated copper profile of the radiator base to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant copper profile of the radiator base; The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0047] Comparative Example 1: Comparative Example 1 is based on Example 1, with the following adjustment: a mixture of reduced graphene oxide and nickel powder was used to obtain a corrosion-resistant spray coating, while other processes remained unchanged. Specifically:

[0048] Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Preparation of reduced graphene oxide: Graphene oxide is calcined to obtain reduced graphene oxide; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S22: Nickel powder and reduced graphene oxide are mixed evenly at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S23: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated copper profile of the radiator base to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant copper profile of the radiator base; The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0049] Comparative Example 2: Based on Example 1, Comparative Example 2 adjusted the amount of zirconium chloride while keeping other processes unchanged. Specifically, it describes a processing technology for a copper profile for a 5G base station heat sink base. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Cerium chloride and lanthanum chloride are mixed and compounded in a mass ratio of 2:1 to obtain rare earth metal chlorides; S22: Preparation of nickel / rare earth-zirconium-doped graphene: (1) Rare earth metal chloride, zirconium chloride, and graphene oxide were dispersed in deionized water and stirred and heated to 115°C for 9 hours under a closed high-pressure environment. After the reaction was completed, the graphene was filtered, washed, and dried to obtain rare earth-zirconium-doped graphene; (2) Rare earth-zirconium-doped graphene was dispersed in deionized water and sodium dodecyl sulfate was added. The mixture was stirred and mixed for 20 minutes. After the mixture was filtered, washed, and dried, modified rare earth-zirconium-doped graphene was obtained; (3) Modified rare earth-zirconium-doped graphene was added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution was slowly added to the solution. After the addition was completed, the mixture was stirred and reacted for 45 minutes. After the mixture was filtered, washed, dried, and calcined, nickel / rare earth-zirconium-doped graphene was obtained. The ratio of rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water is 4g:0.3g:3g:1L. The mass ratio of rare earth-zirconium-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified nickel / rare earth-zirconium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S23: Nickel powder and nickel / rare earth-zirconium-doped graphene are mixed evenly at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S24: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated radiator base copper profile to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0050] Comparative Example 3: Comparative Example 3 is based on Example 1, with the following adjustment: nickel powder is directly sprayed onto the surface of the pre-treated copper profile of the heat sink base, while other processes remain unchanged. Specifically, it is a processing technology for a copper profile of a heat sink base for a 5G base station. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Spray a corrosion-resistant layer onto the surface of the pre-treated radiator base copper profile: Use supersonic flame spraying technology to spray nickel powder onto the surface of the pre-treated radiator base copper profile to form a 0.2mm nickel layer (corrosion-resistant layer), thus obtaining a corrosion-resistant radiator base copper profile. The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0051] Comparative Example 4: Comparative Example 4 is based on Example 1, with the following adjustment: only cerium chloride is used as the rare earth chloride, while other processes remain unchanged. Specifically, it is a processing technology for a copper profile of a radiator base for a 5G base station. Step 1: Cleaning pretreatment of the copper profile of the radiator base: (1) Put the copper profile of the radiator base into a 5wt% sodium hydroxide aqueous solution and soak it at 70℃ for 5 minutes. Take it out, clean it with water, and dry it. (2) Then immerse the copper profile of the radiator base in copper brightening cleaner and soak it at 45℃ for 5 minutes. Take it out, clean it with water, vacuum dry it, and complete the cleaning pretreatment to obtain the pretreated copper profile of the radiator base. Step 2: Apply a corrosion-resistant layer to the surface of the pre-treated copper profile of the radiator base: S21: Preparation of nickel / cerium-doped graphene: (1) Cerium chloride and graphene oxide were dispersed in deionized water, stirred and heated to 115°C for 9 hours, the reaction was stopped, filtered, washed and dried to obtain cerium-doped graphene; (2) Cerium-doped graphene was dispersed in deionized water and sodium dodecyl sulfate was added, stirred and mixed for 20 minutes, filtered, washed and dried to obtain modified cerium-doped graphene; (3) Modified cerium-doped graphene was added to nickel plating solution, stirred and dispersed evenly, and heated to 80°C in a water bath. Finally, sodium hypophosphite aqueous solution was slowly added to the solution. After the addition was completed, the reaction was stirred for 45 minutes, filtered, washed, dried and calcined to obtain nickel / cerium-doped graphene; The ratio of cerium chloride, graphene oxide, and deionized water is 4g:3g:1L. The mass ratio of cerium-doped graphene, sodium dodecyl sulfate, and deionized water is 3g:10g:1L; The ratio of modified cerium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is 2g:1L:1L; The calcination parameters are: under vacuum atmosphere, vacuum degree is 5×10 -2 Pa, calcination temperature is 900℃, calcination time is 3h; S22: Nickel powder and nickel / cerium doped graphene are mixed evenly at a mass ratio of 97:3 to obtain a corrosion-resistant spray coating. S23: Using supersonic flame spraying technology, a corrosion-resistant coating is sprayed onto the surface of the pre-treated copper profile of the radiator base to form a 0.2mm corrosion-resistant layer, thus obtaining a corrosion-resistant copper profile of the radiator base; The parameters for the supersonic flame spraying technology are as follows: oxygen flow rate of 1.1 L / min, oxygen pressure of 1.5 MPa, propane flow rate of 105 L / min, propane pressure of 0.4 MPa, nitrogen powder delivery pressure of 0.55 MPa, and spraying distance of 190 mm.

[0052] Performance testing: Thermal conductivity and corrosion resistance tests were conducted on the copper profiles of the heat sink bases obtained in Examples 1-9 and Comparative Examples 1-5 for comparison. The specific test methods are as follows: (1) Thermal conductivity test: The thermal conductivity of the copper profile of the radiator base at room temperature was tested using a laser thermal conductivity meter; (2) Corrosion resistance test: According to GB / T 10125-2021, a salt solution containing 50 g / L sodium chloride and 0.2 g / L copper chloride was prepared, and the pH was adjusted to 3.2; then, a salt spray test was conducted on the copper profile of the radiator base at 50℃, and the salt spray deposition was 2 mL / 80 cm. 2 The test duration was 72 hours. After the test, the surface condition was observed and the thermal conductivity was tested again.

[0053] The results of the above tests are shown in Table 1 below: Table 1

[0054] Results Analysis: As shown in Table 1 above, the experimental data from Examples 1-9 and Comparative Examples 1-5 reveal that the present invention obtains nickel / graphene by coating graphene with nickel. In a further embodiment, rare earth metals are doped onto graphene, followed by further coating with nickel to obtain nickel / rare earth-doped graphene. In an even further embodiment, zirconium is introduced while doping with rare earth metals, followed by coating, to obtain nickel / rare earth-zirconium-doped graphene. The final nickel / rare earth-zirconium-doped graphene is tightly bonded to nickel, reducing the interfacial thermal resistance between nickel and graphene. This enhances the corrosion resistance of the copper profile of the radiator base while ensuring its heat dissipation performance.

[0055] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing technology for a copper profile of a heat sink base for a 5G base station, characterized in that: Includes the following steps: Step 1: Clean and pre-treat the copper profile of the radiator base to obtain the pre-treated copper profile of the radiator base; Step 2: Apply corrosion-resistant coating to the surface of the pre-treated copper profile of the radiator base using supersonic flame spraying technology to form a corrosion-resistant layer, thus obtaining a corrosion-resistant copper profile of the radiator base. The corrosion-resistant spray coating is obtained by mixing the following raw material components: by weight, 96-98% nickel powder and 2-4% modified graphene; The modified graphene includes any one of nickel / graphene, nickel / rare earth-doped graphene, and nickel / rare earth-zirconium-doped graphene.

2. The processing technology of a copper profile for a 5G base station heat sink base according to claim 1, characterized in that: If the modified graphene is nickel / graphene, its preparation method is as follows: add graphene oxide to the nickel plating solution, stir and disperse evenly, and heat in a water bath to 75~85℃. Finally, slowly add sodium hypophosphite aqueous solution to the solution. After the addition is completed, continue stirring and reacting for 30~60 minutes. After filtration, washing, drying, and calcination, nickel / graphene is obtained. The ratio of graphene oxide, nickel plating solution, and sodium hypophosphite aqueous solution is (1~3)g:1L:1L.

3. The processing technology of a copper profile for a 5G base station heat sink base according to claim 1, characterized in that: If the modified graphene is nickel / rare earth doped graphene, its preparation method is as follows: (1) Disperse rare earth metal chlorides and graphene oxide in deionized water, and stir and heat to 110~120℃ for 6~12h under a closed high pressure environment. After the reaction is stopped, filter, wash and dry to obtain rare earth doped graphene. (2) Disperse rare earth-doped graphene in deionized water, add surfactant, stir and mix for 10-30 min, filter, wash and dry to obtain modified rare earth-doped graphene. (3) Add modified rare earth doped graphene to the nickel plating solution, stir and disperse evenly, and heat in a water bath to 75~85℃. Finally, slowly add sodium hypophosphite aqueous solution to the solution. After the addition is complete, continue stirring and reacting for 30~60 min. After filtration, washing, drying and calcination, nickel / rare earth doped graphene is obtained. The ratio of rare earth metal chloride, graphene oxide, and deionized water is (2~6)g:3g:1L. The mass ratio of rare earth-doped graphene, surfactant, and deionized water is 3g:10g:1L; The ratio of modified rare earth-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is (1~3) g:1 L:1 L.

4. The processing technology of a copper profile for a 5G base station heat sink base according to claim 1, characterized in that: If the modified graphene is nickel / rare earth-zirconium-doped graphene, its preparation method is as follows: (1) Rare earth metal chloride, zirconium chloride and graphene oxide are dispersed in deionized water and stirred and heated to 110~120℃ for 6~12h under a closed high pressure environment. After the reaction is stopped, the mixture is filtered, washed and dried to obtain rare earth-zirconium doped graphene. (2) Disperse rare earth-zirconium-doped graphene in deionized water, add surfactant, stir and mix for 10-30 min, filter, wash and dry to obtain modified rare earth-zirconium-doped graphene. (3) Add modified rare earth-zirconium-doped graphene to the nickel plating solution, stir and disperse evenly, and heat in a water bath to 75~85℃. Finally, slowly add sodium hypophosphite aqueous solution to the solution. After the addition is complete, continue stirring and reacting for 30~60 min. After filtration, washing, drying and calcination, nickel / rare earth-zirconium-doped graphene is obtained. The ratio of rare earth metal chloride, zirconium chloride, graphene oxide, and deionized water is (2~6)g:(0.1~0.3)g:3g:1L. The amount of zirconium chloride used is 5% of the mass of rare earth metal chlorides; The mass ratio of rare earth-zirconium-doped graphene, surfactant, and deionized water is 3g:10g:1L; The ratio of modified rare earth-zirconium-doped graphene, nickel plating solution, and sodium hypophosphite aqueous solution is (1~3) g:1 L:1 L.

5. The processing technology of a copper profile for a 5G base station heat sink base according to claim 3 or 4, characterized in that: The rare earth metal chloride is one or a combination of two of cerium chloride and lanthanum chloride; The surfactant is an anionic surfactant.

6. The processing technology of a copper profile for a 5G base station heat sink base according to claim 5, characterized in that: The rare earth metal chloride is obtained by mixing and compounding cerium chloride and lanthanum chloride in a mass ratio of (1~3):

1.

7. The processing technology of a copper profile for a 5G base station heat sink base according to claim 2, 3, or 4, characterized in that: The graphene oxide is a single-layer graphene oxide.

8. The processing technology of a copper profile for a 5G base station heat sink base according to claim 2, 3, or 4, characterized in that: The parameters of the nickel plating solution are as follows: the concentration of each raw material component in each liter of nickel plating solution is: nickel chloride 20~25g / L, sodium citrate 50~70g / L, boric acid 35~50g / L, sodium hydroxide is added to adjust the pH to 9~10, and the solvent is deionized water; The concentration of the sodium hypophosphite aqueous solution is 35~50 g / L.

9. The processing technology of a copper profile for a 5G base station heat sink base according to claim 2, 3, or 4, characterized in that: The calcination parameters are: under vacuum atmosphere, vacuum degree ≤ 5 × 10⁻⁶. -2 Pa, calcination temperature is 850~900℃, calcination time is 1~3h.

10. The processing technology of a copper profile for a 5G base station heat sink base according to claim 1, characterized in that: The parameters of the supersonic flame spraying technology are as follows: oxygen flow rate is 1~1.2L / min, oxygen pressure is 1.4~1.6MPa, propane flow rate is 100~110L / min, propane pressure is 0.3~0.5MPa, nitrogen powder delivery pressure is 0.5~0.6MPa, and spraying distance is 180~200mm. The thickness of the corrosion-resistant layer is ≥0.1mm.

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