High-strength alloy for antennas and process for the production thereof

Abstract

The application discloses a high-strength alloy for an antenna and a preparation process thereof, and relates to the technical field of alloys.The application uses aluminum alloy as the antenna, and the aluminum alloy is light in weight and has good conductivity; in order to further improve the conductivity of the antenna, the antenna is more efficient in signal transmission; the application adopts electroplating technology to plate a copper layer on the surface of the aluminum alloy; and carbon nanotube-silicon dioxide compounds are added into the electroplating solution, so that the strength of the alloy for the antenna is enhanced.The carbon nanotube is high in strength, and the surface of the carbon nanotube is subjected to copper plating treatment, so that the conductivity of the antenna is improved; meanwhile, the copper plating treatment on the surface of the carbon nanotube can improve the bonding force between the carbon nanotube and the copper plating layer and improve the adhesion of the electroplating layer, so that the durability and reliability of the alloy for the antenna are enhanced.

Description

Technical Field

[0001] This invention relates to the field of alloy technology, specifically to a high-strength alloy for antennas and its preparation process. Background Technology

[0002] With the widespread adoption of 5G communication technology, the performance requirements for antenna materials are becoming increasingly stringent. Antenna performance directly impacts signal transmission quality and coverage. Alloys, due to their superior mechanical properties and excellent electromagnetic characteristics, are a crucial component of antennas.

[0003] Traditional antenna materials are mostly metals such as aluminum and copper, which have limitations in terms of strength, corrosion resistance, and stability. With the trend towards miniaturization and lightweight antenna design, ordinary metal materials are insufficient to meet the strength and reliability requirements of modern antennas. Therefore, developing a high-strength alloy material that can optimize conductivity and corrosion resistance while ensuring mechanical strength is particularly important.

[0004] To address the aforementioned problems and improve strength, this invention provides a high-strength alloy for antennas and its manufacturing process. Summary of the Invention

[0005] The purpose of this invention is to provide a high-strength alloy for antennas and its manufacturing process, so as to solve the problems raised in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A manufacturing process for a high-strength alloy for antennas includes the following steps:

[0008] Step 1: Take Mg, Si, Fe, Cu, Cr, Mn, Ti, Zn, and Al, melt them at 745-760℃, refine them at 740-745℃ for 40-60 minutes, let them stand for 30-40 minutes, cast them, heat treat them, and then perform rough rolling, cold rolling, cleaning, annealing, cooling, and polishing to obtain an aluminum alloy.

[0009] Step 2: Take aluminum alloy, pickle, wash with water, dry, and then place it in an electroplating solution for electroplating treatment to obtain a high-strength alloy for antennas;

[0010] The electroplating solution consists of: 300-350 mL / L copper sulfate, 85-100 mL / L accelerator, 2-4 mL / L polyethylene glycol, 0.1-0.3 g / L carbon nanotube-silica composite, and the remainder is deionized water.

[0011] More preferably, the aluminum alloy comprises the following components, by weight percentage: 1 wt%-1.5 wt% Mg, 0.6 wt%-0.9 wt% Si, 0.1 wt%-0.4 wt% Fe, 0.1 wt%-0.15 wt% Cu, 0.07 wt%-0.1 wt% Cr, 0.05 wt%-0.15 wt% Mn, 0.04 wt%-0.085 wt% Ti, 0.03 wt%-0.08 wt% Zn, with the balance being Al.

[0012] A more optimized method for preparing the carbon nanotube-silica composite includes the following steps:

[0013] S1: Take deionized water, add tris(hydroxymethyl)aminomethane hydrochloric acid solution, adjust the pH value to 8.3-8.5, add copper-plated carbon nanotubes and dopamine hydrochloride powder, stir for 5-6 hours, centrifuge and dry to obtain copper-plated carbon nanotubes coated with polydopamine.

[0014] S2: Take deionized water and anhydrous ethanol, stir evenly, add copper-plated carbon nanotubes coated with polydopamine and modified silica, heat to 65-70℃, ultrasonically disperse for 30-40 min, then stir for 5-6 h, filter and dry to obtain carbon nanotube-silica composite.

[0015] In a more optimized manner, the preparation method of the copper-plated carbon nanotubes is as follows: take carbon nanotubes and deionized water, disperse them by ultrasonication to obtain a carbon nanotube suspension, add the carbon nanotubes to plating solution A, heat to 65-70℃, add formaldehyde, and electroplate for 110-120 minutes to obtain copper-plated carbon nanotubes.

[0016] In a more optimized manner, the plating solution A is prepared as follows: using deionized water as a solvent, copper sulfate pentahydrate, potassium sodium tartrate, and ethylenediaminetetraacetic acid are taken, stirred evenly, polyethylene glycol is added, and then sodium hydroxide solution is added dropwise to adjust the pH value to 11-12 to obtain plating solution A.

[0017] A more optimized method for preparing the modified silica is as follows: take aminated silica and deionized water, stir evenly, ultrasonically disperse for 20-30 min, heat to 55-60℃, add 1H,1H,2H,2H-perfluorooctyltriethoxysilane and acetic acid, heat to 75-80℃, stir for 6-7 h, filter and dry to obtain modified silica.

[0018] A more optimized method for preparing the aminated silica is as follows: take silica and anhydrous toluene, stir evenly, ultrasonically disperse for 20-30 min, add aminopropyltriethoxysilane, purge with nitrogen and heat to boiling, reflux at 105℃ for 46-50 h, wash and dry to obtain aminated silica.

[0019] More preferably, the accelerator is any one or more of sodium citrate and potassium tartrate.

[0020] In a more optimized manner, in step two, the electroplating solution temperature is 55-65℃ and the electroplating time is 12-15 minutes.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention uses aluminum alloy as the antenna. Aluminum alloy is lightweight and has good conductivity. In order to further improve the conductivity of the antenna and make the antenna more efficient in signal transmission, this invention uses electroplating technology to plate a copper layer on the surface of the aluminum alloy.

[0023] 2. Adding a carbon nanotube-silica composite to the electroplating solution enhances the strength of the antenna alloy. Carbon nanotubes have high strength; copper plating on their surface improves the antenna's conductivity. Furthermore, copper plating improves the bonding between the carbon nanotubes and the copper plating layer, increasing the adhesion of the electroplated layer and thus enhancing the durability and reliability of the antenna alloy.

[0024] 3. Modification of silica with 1H,1H,2H,2H-perfluorooctyltriethoxysilane enhances the corrosion resistance of antenna alloys. Combining carbon nanotubes with modified silica improves the agglomeration of carbon nanotubes. Amination treatment of silica first enhances the interaction between the amination group and carbon nanotubes, improving their interfacial compatibility and further strengthening the antenna alloy. Detailed Implementation

[0025] 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.

[0026] The sources and types of substances involved in this invention are not subject to any particular limitation, and exemplary examples include: silicon dioxide: particle size 80-120nm; carbon nanotubes: diameter: 10-20nm; length: 10-30um.

[0027] Example 1: A manufacturing process for a high-strength alloy for antennas, comprising the following steps:

[0028] Step 1: Preparation of aluminum alloy:

[0029] Take Mg, Si, Fe, Cu, Cr, Mn, Ti, Zn and Al, melt them at 750℃, refine them at 742℃ for 50 min, let them stand for 35 min, cast them, heat treat them, and then perform rough rolling, cold rolling, cleaning, annealing, cooling and polishing to obtain an aluminum alloy.

[0030] The aluminum alloy comprises the following components, by weight percentage: 1.2 wt% Mg, 0.8 wt% Si, 0.3 wt% Fe, 0.12 wt% Cu, 0.08 wt% Cr, 0.1 wt% Mn, 0.05 wt% Ti, 0.04 wt% Zn, with the balance being Al;

[0031] Step 2: Take aluminum alloy, pickle, wash with water, dry, and then place it in an electroplating solution for electroplating treatment. The temperature of the plating solution is 60℃ and the electroplating time is 13 minutes; to obtain a high-strength alloy for antennas.

[0032] The electroplating solution consists of: 320 mL / L copper sulfate, 90 mL / L sodium citrate (accelerator), 3 mL / L polyethylene glycol, 0.2 g / L carbon nanotube-silica composite, and the remainder is deionized water.

[0033] Step 3: Preparation of copper-plated carbon nanotubes:

[0034] Using deionized water as a solvent, take 15 g / L copper sulfate pentahydrate, 10.5 g potassium sodium tartrate, and 20 g / L ethylenediaminetetraacetic acid, stir well, add 2 mL / L polyethylene glycol, and then add sodium hydroxide solution dropwise to adjust the pH value to 11.5 to obtain plating solution A.

[0035] Take 0.1g of carbon nanotubes and 50mL of deionized water, disperse them by ultrasonication to obtain a carbon nanotube suspension, add the carbon nanotubes to plating solution A, heat to 68℃, add 4.5g / L of formaldehyde, electroplate for 115min to obtain copper-plated carbon nanotubes.

[0036] Step 4: Preparation of Aminated Silica:

[0037] Take 5g of silica and 300mL of anhydrous toluene, stir evenly, ultrasonically disperse for 25min, add 20g of aminopropyltriethoxysilane, purge with nitrogen and heat to boiling, reflux at 105℃ for 47h, wash and dry to obtain aminated silica.

[0038] Step 5: Preparation of modified silica:

[0039] Take 6g of aminated silica and 300mL of deionized water, stir evenly, sonicate for 25min, heat to 57℃, add 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane and 0.5g of acetic acid, heat to 78℃, stir for 6.5h, filter and dry to obtain modified silica;

[0040] Step Six: Preparation of the carbon nanotube-silica composite:

[0041] S1: Take 1000mL of deionized water, add tris(hydroxymethyl)aminomethane hydrochloric acid solution, adjust the pH value to 8.4, add 0.1g of copper-plated carbon nanotubes and 3g of dopamine hydrochloride powder, stir for 5h, centrifuge and dry to obtain copper-plated carbon nanotubes coated with polydopamine.

[0042] S2: Take 100mL of deionized water and 50mL of anhydrous ethanol, stir well, add 1g of copper-plated carbon nanotubes coated with polydopamine and 2g of modified silica, heat to 68℃, ultrasonically disperse for 35min, then stir for 5.5h, filter and dry to obtain carbon nanotube-silica composite.

[0043] Example 2: A manufacturing process for a high-strength alloy for antennas, comprising the following steps:

[0044] Step 1: Preparation of aluminum alloy:

[0045] Take Mg, Si, Fe, Cu, Cr, Mn, Ti, Zn and Al, melt them at 745℃, refine them at 740℃ for 40 min, let them stand for 30 min, cast them, heat treat them, and then perform rough rolling, cold rolling, cleaning, annealing, cooling and polishing to obtain an aluminum alloy.

[0046] The aluminum alloy comprises the following components, by weight percentage: 1 wt% Mg, 0.6 wt% Si, 0.1 wt% Fe, 0.1 wt% Cu, 0.07 wt% Cr, 0.05 wt% Mn, 0.04 wt% Ti, 0.03 wt% Zn, with the balance being Al;

[0047] Step 2: Take aluminum alloy, pickle, wash with water, dry, and then place it in an electroplating solution for electroplating treatment. The solution temperature is 55℃ and the electroplating time is 12 minutes; to obtain a high-strength alloy for antennas.

[0048] The electroplating solution consists of: 300 mL / L copper sulfate, 85 mL / L sodium citrate (accelerator), 2 mL / L polyethylene glycol, 0.1 g / L carbon nanotube-silica composite, and the remainder is deionized water.

[0049] Step 3: Preparation of copper-plated carbon nanotubes:

[0050] Using deionized water as a solvent, take 15 g / L copper sulfate pentahydrate, 10.5 g potassium sodium tartrate, and 20 g / L ethylenediaminetetraacetic acid, stir well, add 2 mL / L polyethylene glycol, and then add sodium hydroxide solution dropwise to adjust the pH value to 11 to obtain plating solution A.

[0051] Take 0.1g of carbon nanotubes and 50mL of deionized water, disperse them by ultrasonication to obtain a carbon nanotube suspension, add the carbon nanotubes to plating solution A, heat to 65℃, add 4.5g / L of formaldehyde, electroplate for 110min to obtain copper-plated carbon nanotubes.

[0052] Step 4: Preparation of Aminated Silica:

[0053] Take 5g of silica and 300mL of anhydrous toluene, stir evenly, ultrasonically disperse for 20min, add 20g of aminopropyltriethoxysilane, purge with nitrogen and heat to boiling, reflux at 105℃ for 46h, wash and dry to obtain aminated silica.

[0054] Step 5: Preparation of modified silica:

[0055] Take 6g of aminated silica and 300mL of deionized water, stir evenly, sonicate for 20min, heat to 55℃, add 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane and 0.5g of acetic acid, heat to 75℃, stir for 6h, filter and dry to obtain modified silica.

[0056] Step Six: Preparation of the carbon nanotube-silica composite:

[0057] S1: Take 1000mL of deionized water, add tris(hydroxymethyl)aminomethane hydrochloric acid solution, adjust the pH value to 8.3, add 0.1g of copper-plated carbon nanotubes and 3g of dopamine hydrochloride powder, stir for 5h, centrifuge and dry to obtain copper-plated carbon nanotubes coated with polydopamine.

[0058] S2: Take 100mL of deionized water and 50mL of anhydrous ethanol, stir well, add 1g of copper-plated carbon nanotubes coated with polydopamine and 2g of modified silica, heat to 65℃, ultrasonically disperse for 30min, then stir for 5h, filter and dry to obtain carbon nanotube-silica composite.

[0059] Example 3: A manufacturing process for a high-strength alloy for antennas, comprising the following steps:

[0060] Step 1: Preparation of aluminum alloy:

[0061] Take Mg, Si, Fe, Cu, Cr, Mn, Ti, Zn and Al, melt them at 760℃, refine them at 745℃ for 60 min, let them stand for 40 min, cast them, heat treat them, and then perform rough rolling, cold rolling, cleaning, annealing, cooling and polishing to obtain an aluminum alloy.

[0062] The aluminum alloy comprises the following components, by weight percentage: 1.5 wt% Mg, 0.9 wt% Si, 0.4 wt% Fe, 0.15 wt% Cu, 0.1 wt% Cr, 0.15 wt% Mn, 0.085 wt% Ti, 0.08 wt% Zn, with the balance being Al;

[0063] Step 2: Take aluminum alloy, pickle, wash with water, dry, and then place it in an electroplating solution for electroplating treatment. The solution temperature is 65℃ and the electroplating time is 15 minutes; to obtain a high-strength alloy for antennas.

[0064] The electroplating solution consists of: 350 mL / L copper sulfate, 100 mL / L sodium citrate (accelerator), 4 mL / L polyethylene glycol, 0.3 g / L carbon nanotube-silica composite, and the remainder is deionized water.

[0065] Step 3: Preparation of copper-plated carbon nanotubes:

[0066] Using deionized water as a solvent, take 15 g / L copper sulfate pentahydrate, 10.5 g potassium sodium tartrate, and 20 g / L ethylenediaminetetraacetic acid, stir well, add 2 mL / L polyethylene glycol, and then add sodium hydroxide solution dropwise to adjust the pH value to 12 to obtain plating solution A.

[0067] Take 0.1g of carbon nanotubes and 50mL of deionized water, disperse them by ultrasonication to obtain a carbon nanotube suspension, add the carbon nanotubes to plating solution A, heat to 70℃, add 4.5g / L of formaldehyde, electroplate for 120min to obtain copper-plated carbon nanotubes.

[0068] Step 4: Preparation of Aminated Silica:

[0069] Take 5g of silica and 300mL of anhydrous toluene, stir evenly, ultrasonically disperse for 30min, add 20g of aminopropyltriethoxysilane, purge with nitrogen and heat to boiling, reflux at 105℃ for 50h, wash and dry to obtain aminated silica.

[0070] Step 5: Preparation of modified silica:

[0071] Take 6g of aminated silica and 300mL of deionized water, stir evenly, ultrasonically disperse for 30min, heat to 60℃, add 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane and 0.5g of acetic acid, heat to 80℃, stir for 7h, filter and dry to obtain modified silica;

[0072] Step Six: Preparation of the carbon nanotube-silica composite:

[0073] S1: Take 1000mL of deionized water, add tris(hydroxymethyl)aminomethane hydrochloric acid solution, adjust the pH value to 8.5, add 0.1g of copper-plated carbon nanotubes and 3g of dopamine hydrochloride powder, stir for 5h, centrifuge and dry to obtain copper-plated carbon nanotubes coated with polydopamine.

[0074] S2: Take 100mL of deionized water and 50mL of anhydrous ethanol, stir well, add 1g of copper-plated carbon nanotubes coated with polydopamine and 2g of modified silica, heat to 70℃, ultrasonically disperse for 40min, then stir for 6h, filter and dry to obtain carbon nanotube-silica composite.

[0075] Comparative Example 1: No copper plating was applied to the carbon nanotube surface; all other aspects were the same as in Example 1.

[0076] A manufacturing process for a high-strength alloy for antennas includes the following steps:

[0077] Step 1: Preparation of aluminum alloy:

[0078] Take Mg, Si, Fe, Cu, Cr, Mn, Ti, Zn and Al, melt them at 750℃, refine them at 742℃ for 50 min, let them stand for 35 min, cast them, heat treat them, and then perform rough rolling, cold rolling, cleaning, annealing, cooling and polishing to obtain an aluminum alloy.

[0079] The aluminum alloy comprises the following components, by weight percentage: 1.2 wt% Mg, 0.8 wt% Si, 0.3 wt% Fe, 0.12 wt% Cu, 0.08 wt% Cr, 0.1 wt% Mn, 0.05 wt% Ti, 0.04 wt% Zn, with the balance being Al;

[0080] Step 2: Take aluminum alloy, pickle, wash with water, dry, and then place it in an electroplating solution for electroplating treatment. The temperature of the plating solution is 60℃ and the electroplating time is 13 minutes; to obtain a high-strength alloy for antennas.

[0081] The electroplating solution consists of: 320 mL / L copper sulfate, 90 mL / L sodium citrate (accelerator), 3 mL / L polyethylene glycol, 0.2 g / L carbon nanotube-silica composite, and the remainder is deionized water.

[0082] Step 3: Preparation of Aminated Silica:

[0083] Take 5g of silica and 300mL of anhydrous toluene, stir evenly, ultrasonically disperse for 25min, add 20g of aminopropyltriethoxysilane, purge with nitrogen and heat to boiling, reflux at 105℃ for 47h, wash and dry to obtain aminated silica.

[0084] Step 4: Preparation of modified silica:

[0085] Take 6g of aminated silica and 300mL of deionized water, stir evenly, sonicate for 25min, heat to 57℃, add 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane and 0.5g of acetic acid, heat to 78℃, stir for 6.5h, filter and dry to obtain modified silica;

[0086] Step 5: Preparation of carbon nanotube-silica composite:

[0087] S1: Take 1000mL of deionized water, add tris(hydroxymethyl)aminomethane hydrochloric acid solution, adjust the pH value to 8.4, add 0.1g carbon nanotubes and 3g dopamine hydrochloride powder, stir for 5h, centrifuge and dry to obtain carbon nanotubes coated with polydopamine.

[0088] S2: Take 100 mL of deionized water and 50 mL of anhydrous ethanol, stir well, add 1 g of polydopamine-coated carbon nanotubes and 2 g of modified silica, heat to 68 °C, ultrasonically disperse for 35 min, then stir for 5.5 h, filter and dry to obtain carbon nanotube-silica composite.

[0089] Comparative Example 2: Copper-plated carbon nanotubes were not combined with modified silica; all other aspects were the same as in Example 1.

[0090] A manufacturing process for a high-strength alloy for antennas includes the following steps:

[0091] Step 1: Preparation of aluminum alloy:

[0092] Take Mg, Si, Fe, Cu, Cr, Mn, Ti, Zn and Al, melt them at 750℃, refine them at 742℃ for 50 min, let them stand for 35 min, cast them, heat treat them, and then perform rough rolling, cold rolling, cleaning, annealing, cooling and polishing to obtain an aluminum alloy.

[0093] The aluminum alloy comprises the following components, by weight percentage: 1.2 wt% Mg, 0.8 wt% Si, 0.3 wt% Fe, 0.12 wt% Cu, 0.08 wt% Cr, 0.1 wt% Mn, 0.05 wt% Ti, 0.04 wt% Zn, with the balance being Al;

[0094] Step 2: Take aluminum alloy, pickle, wash with water, dry, and then place it in an electroplating solution for electroplating treatment. The temperature of the plating solution is 60℃ and the electroplating time is 13 minutes; to obtain a high-strength alloy for antennas.

[0095] The electroplating solution consists of: 320 mL / L copper sulfate, 90 mL / L sodium citrate (accelerator), 3 mL / L polyethylene glycol, 0.07 g / L copper-plated carbon nanotubes, 0.13 g / L modified silica, and the remainder is deionized water.

[0096] Step 3: Preparation of copper-plated carbon nanotubes:

[0097] Using deionized water as a solvent, take 15 g / L copper sulfate pentahydrate, 10.5 g potassium sodium tartrate, and 20 g / L ethylenediaminetetraacetic acid, stir well, add 2 mL / L polyethylene glycol, and then add sodium hydroxide solution dropwise to adjust the pH value to 11.5 to obtain plating solution A.

[0098] Take 0.1g of carbon nanotubes and 50mL of deionized water, disperse them by ultrasonication to obtain a carbon nanotube suspension, add the carbon nanotubes to plating solution A, heat to 68℃, add 4.5g / L of formaldehyde, electroplate for 115min to obtain copper-plated carbon nanotubes.

[0099] Step 4: Preparation of Aminated Silica:

[0100] Take 5g of silica and 300mL of anhydrous toluene, stir evenly, ultrasonically disperse for 25min, add 20g of aminopropyltriethoxysilane, purge with nitrogen and heat to boiling, reflux at 105℃ for 47h, wash and dry to obtain aminated silica.

[0101] Step 5: Preparation of modified silica:

[0102] Take 6g of aminated silica and 300mL of deionized water, stir evenly, sonicate for 25min, heat to 57℃, add 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane and 0.5g of acetic acid, heat to 78℃, stir for 6.5h, filter and dry to obtain modified silica.

[0103] Comparative Example 3: No amination treatment was performed on the silica; all other aspects were the same as in Example 1.

[0104] A manufacturing process for a high-strength alloy for antennas includes the following steps:

[0105] Step 1: Preparation of aluminum alloy:

[0106] Take Mg, Si, Fe, Cu, Cr, Mn, Ti, Zn and Al, melt them at 750℃, refine them at 742℃ for 50 min, let them stand for 35 min, cast them, heat treat them, and then perform rough rolling, cold rolling, cleaning, annealing, cooling and polishing to obtain an aluminum alloy.

[0107] The aluminum alloy comprises the following components, by weight percentage: 1.2 wt% Mg, 0.8 wt% Si, 0.3 wt% Fe, 0.12 wt% Cu, 0.08 wt% Cr, 0.1 wt% Mn, 0.05 wt% Ti, 0.04 wt% Zn, with the balance being Al;

[0108] Step 2: Take aluminum alloy, pickle, wash with water, dry, and then place it in an electroplating solution for electroplating treatment. The temperature of the plating solution is 60℃ and the electroplating time is 13 minutes; to obtain a high-strength alloy for antennas.

[0109] The electroplating solution consists of: 320 mL / L copper sulfate, 90 mL / L sodium citrate (accelerator), 3 mL / L polyethylene glycol, 0.2 g / L carbon nanotube-silica composite, and the remainder is deionized water.

[0110] Step 3: Preparation of copper-plated carbon nanotubes:

[0111] Using deionized water as a solvent, take 15 g / L copper sulfate pentahydrate, 10.5 g potassium sodium tartrate, and 20 g / L ethylenediaminetetraacetic acid, stir well, add 2 mL / L polyethylene glycol, and then add sodium hydroxide solution dropwise to adjust the pH value to 11.5 to obtain plating solution A.

[0112] Take 0.1g of carbon nanotubes and 50mL of deionized water, disperse them by ultrasonication to obtain a carbon nanotube suspension, add the carbon nanotubes to plating solution A, heat to 68℃, add 4.5g / L of formaldehyde, electroplate for 115min to obtain copper-plated carbon nanotubes.

[0113] Step 4: Preparation of modified silica:

[0114] Take 6g of silica and 300mL of deionized water, stir evenly, sonicate for 25min, heat to 57℃, add 1g of 1H,1H,2H,2H-perfluorooctyltriethoxysilane and 0.5g of acetic acid, heat to 78℃, stir for 6.5h, filter and dry to obtain modified silica;

[0115] Step 5: Preparation of carbon nanotube-silica composite:

[0116] S1: Take 1000mL of deionized water, add tris(hydroxymethyl)aminomethane hydrochloric acid solution, adjust the pH value to 8.4, add 0.1g of copper-plated carbon nanotubes and 3g of dopamine hydrochloride powder, stir for 5h, centrifuge and dry to obtain copper-plated carbon nanotubes coated with polydopamine.

[0117] S2: Take 100mL of deionized water and 50mL of anhydrous ethanol, stir well, add 1g of copper-plated carbon nanotubes coated with polydopamine and 2g of modified silica, heat to 68℃, ultrasonically disperse for 35min, then stir for 5.5h, filter and dry to obtain carbon nanotube-silica composite.

[0118] experiment:

[0119] The high-strength antenna alloys with a thickness of 2 mm prepared in Examples 1 to 3 and Comparative Examples 1 to 3 were subjected to performance tests. The yield strength and tensile strength of the alloys were tested according to GB / T3880.2-2024. The friction and wear resistance of the alloy coating was tested using a friction and wear testing machine. The data obtained are shown below:

[0120] <![CDATA[Yield strength / MP a > <![CDATA[Tensile strength / MP a > coefficient of friction Example 1 137 235 0.22 Example 2 135 234 0.23 Example 3 138 236 0.22 Comparative Example 1 132 231 0.27 Comparative Example 2 121 220 0.25 Comparative Example 3 129 228 0.23

[0121] Conclusion: The data comparison in the table shows that in Comparative Example 1, without copper plating on the carbon nanotube surface, the bonding force between the carbon nanotubes and the copper plating layer weakens, the adhesion of the plating layer decreases, the coefficient of friction increases, the wear resistance of the alloy plating layer deteriorates, and the alloy strength decreases. In Comparative Example 2, the copper-plated carbon nanotubes are not combined with modified silica, making the carbon nanotubes prone to agglomeration, thus affecting the mechanical properties of the antenna alloy. In Comparative Example 3, without amination treatment of silica, the interfacial compatibility between amination silica and carbon nanotubes is poor, resulting in a decrease in the strength of the antenna alloy. Examples 1 to 3 of this invention add a carbon nanotube-silica composite to the electroplating solution, enhancing the strength of the antenna alloy. Carbon nanotubes have high strength; copper plating on the surface of carbon nanotubes improves the conductivity of the antenna. Simultaneously, copper plating on the surface of carbon nanotubes improves the bonding force between the carbon nanotubes and the copper plating layer, increasing the adhesion of the electroplating layer, thereby enhancing the durability and reliability of the antenna alloy. Combining carbon nanotubes with modified silica improves the aggregation of carbon nanotubes. First, the silica is aminated, and the amino groups can enhance the interaction between the aminated silica and carbon nanotubes, improve the interfacial compatibility between the two, and further enhance the strength of the antenna alloy.

[0122] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A process for the production of high strength alloys for antennas, characterized by: The method comprises the following steps: Step 1: Mg, Si, Fe, Cu, Cr, Mn, Ti, Zn, Al are taken, smelted at 745-760 DEG C, refined at 740-745 DEG C for 40-60 min, placed for 30-40 min, cast, heat treated, then rough rolled, cold rolled, cleaned, annealed, cooled, polished to obtain an aluminum alloy; Step 2: the aluminum alloy is pickled, washed with water, dried, then placed in an electroplating solution for electroplating treatment to obtain a high-strength alloy for an antenna; The electroplating solution comprises 300-350 mL / L of copper sulfate, 85-100 mL / L of a promoter, 2-4 mL / L of polyethylene glycol, 0.1-0.3 g / L of carbon nanotube-silica composite, and the rest is deionized water; The aluminum alloy comprises the following components in percentage by weight: 1wt%-1.5wt% of Mg, 0.6wt%-0.9wt% of Si, 0.1wt%-0.4wt% of Fe, 0.1wt%-0.15wt% of Cu, 0.07wt%-0.1wt% of Cr, 0.05wt%-0.15wt% of Mn, 0.04wt%-0.085wt% of Ti, 0.03wt%-0.08wt% of Zn, and the rest is Al; The preparation method of the carbon nanotube-silica composite comprises the following steps: The preparation method of the carbon nanotube-silica composite comprises the following steps: S1: deionized water is taken, a trimethylol aminomethane hydrochloride solution is added, the pH value is adjusted to 8.3-8.5, copper-plated carbon nanotubes and dopamine hydrochloride powder are added, stirring is conducted for 5-6 h, centrifugation and drying are conducted to obtain polydopamine-coated copper-plated carbon nanotubes; S2: deionized water and anhydrous ethanol are taken, stirring is conducted, the polydopamine-coated copper-plated carbon nanotubes and modified silica are added, the temperature is raised to 65-70 DEG C, ultrasonic dispersion is conducted for 30-40 min, then stirring is conducted for 5-6 h, filtration and drying are conducted to obtain the carbon nanotube-silica composite; The preparation method of the modified silica comprises the following steps: amino-modified silica and deionized water are taken, stirring is conducted, ultrasonic dispersion is conducted for 20-30 min, the temperature is raised to 55-60 DEG C, 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane and acetic acid are added, the temperature is raised to 75-80 DEG C, stirring is conducted for 6-7 h, filtration and drying are conducted to obtain the modified silica.

2. The process for preparing a high-strength alloy for an antenna according to claim 1, characterized by: The preparation method of the copper-plated carbon nanotubes comprises the following steps: carbon nanotubes and deionized water are taken, ultrasonic dispersion is conducted to obtain a carbon nanotube suspension, the carbon nanotubes are added to plating solution A, the temperature is raised to 65-70 DEG C, formaldehyde is added, and electroplating is conducted for 110-120 min to obtain the copper-plated carbon nanotubes; The preparation method of the plating solution A comprises the following steps: deionized water is used as a solvent, copper sulfate pentahydrate, potassium sodium tartrate, and ethylenediaminetetraacetic acid are taken, stirring is conducted, polyethylene glycol is added, then sodium hydroxide solution is added dropwise, the pH value is adjusted to 11-12, and the plating solution A is obtained.

3. The process for preparing a high-strength alloy for an antenna according to claim 1, characterized by: The preparation method of the amino silica is as follows: taking silica and anhydrous toluene, stirring uniformly, ultrasonic dispersion for 20-30 min, adding aminopropyl triethoxysilane, heating to boiling after nitrogen filling, constant temperature refluxing at 105℃ for 46-50 h, cleaning and drying to obtain the amino silica.

4. The process for preparing a high-strength alloy for an antenna according to claim 1, wherein: The accelerator is any one or more of sodium citrate and potassium tartrate.

5. The process for preparing a high-strength alloy for an antenna according to claim 1, wherein: In step two, the plating solution temperature is 55-65℃ and the plating time is 12-15 min.

6. A high-strength alloy for antennas prepared by the preparation process according to any one of claims 1-5.