Process for producing titanium anode plate for electrolytic copper foil

Abstract

The present application relates to the technical field of titanium anode plate production, in particular to a process for producing titanium anode plates for electrolytic copper foil production. The process comprises the following steps: selecting high-purity titanium plates as anode plate materials and performing oxidation treatment; designing an ordered hole pattern and using laser etching technology to etch the oxidation layer; performing coating treatment and selecting corrosion-resistant and conductive coating materials. The raw materials of the coating material include straw, graphene, conductive polymer, metal nanoparticles and carbon nanotubes. The preparation method of the coating material is to obtain nanocellulose material by pretreating straw, then mix it with graphene and conductive polymer, and finally add metal nanoparticles and carbon nanotubes to form the coating material. Through this process, the electrolysis reaction efficiency can be improved, more stable and fast copper foil production can be obtained, more uniform, flat and defect-free copper foil products can be obtained, the corrosion resistance and service life of the anode plate can be improved, and the pollution to the environment can be reduced.

Description

Technical Field

[0001] This invention relates to the field of titanium anode plate production technology, and more specifically, to a process for producing titanium anode plates for electrolytic copper foil. Background Technology

[0002] The production of electrolytic copper foil requires the use of specific anode plate materials, among which titanium anode plates are a commonly used choice. Titanium anode plates possess excellent corrosion resistance, electrical conductivity, and mechanical strength, making them an ideal choice in the electrolytic copper foil production process.

[0003] However, the existing anode plate manufacturing process still has the following shortcomings:

[0004] Existing technologies may not provide efficient and stable electrolytic reactions, resulting in slow and unstable copper foil production speeds. Defects and inhomogeneities on the anode plate surface are also present in existing technologies, potentially leading to quality issues in the produced copper foil, such as uneven surfaces and defects. Existing anode plate materials may lack sufficient corrosion resistance, resulting in a short service life and requiring frequent replacement and maintenance, increasing costs and workload. Furthermore, the use of some traditional materials in existing technologies pollutes the environment and does not meet the requirements of sustainable development.

[0005] In summary, existing technologies for producing titanium anode plates for electrolytic copper foil have shortcomings in terms of efficiency, quality, corrosion resistance, and environmental friendliness. There is an urgent need for a novel process to produce titanium anode plates for electrolytic copper foil to overcome these deficiencies. Summary of the Invention

[0006] The purpose of this invention is to provide a process for producing titanium anode plates for electrolytic copper foil, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides a process for producing titanium anode plates for electrolytic copper foil, comprising the following steps:

[0008] S1. Select high-purity titanium plates as anode plate materials; perform oxidation treatment on the titanium plates to form a uniform oxide layer;

[0009] S2. Design an orderly pattern of holes on the oxide layer;

[0010] S3. Using laser etching technology, the designed hole pattern is etched onto the oxide layer of the titanium plate;

[0011] S4. Apply a coating to the etched anode plate surface; select a coating material that is corrosion resistant and conductive as the coating.

[0012] Preferably, in step S4, the raw materials for the coating material include: 18-25 parts by weight of straw, 1-5 parts by weight of graphene, 2-7 parts by weight of conductive polymer, 2-7 parts by weight of metal nanoparticles, and 1-3 parts by weight of carbon nanotubes.

[0013] Preferably, the straw is at least one of wheat straw, corn straw, and rice straw.

[0014] Preferably, the conductive polymer is one of polyaniline, polycarbazole, and polythiophene.

[0015] Preferably, the metal nanoparticles are one of copper nanoparticles, silver nanoparticles, nickel nanoparticles, and iron nanoparticles.

[0016] Preferably, the coating material is prepared by the following method:

[0017] Straw is pretreated to remove impurities and obtain pure cellulose. Nanotechnology is used to process the cellulose particles into nanocellulose materials. High-temperature carbonization and oxidation methods are used to enhance the corrosion resistance and electrical conductivity of nanocellulose.

[0018] Nanocellulose, graphene, and conductive polymer are added to water and mixed to form a mixture. Then, metal nanoparticles are added to the mixture and stirred thoroughly to disperse them evenly and form a coating material.

[0019] Preferably, in step S4, the coating process is as follows: the prepared coating material is uniformly coated onto the surface of the titanium anode plate; then heat treatment and curing steps are performed.

[0020] Preferably, the coating material is uniformly coated onto the surface of the titanium anode plate using one of the following coating methods: brushing, spraying, or dipping.

[0021] Preferably, the heat treatment and curing includes one of an oven, ultraviolet radiation, and heat treatment equipment.

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

[0023] 1. In the process of producing titanium anode plates for electrolytic copper foil, by selecting high-purity titanium plates, optimizing the anode plate preparation steps, designing the hole pattern, and coating treatment, the efficiency of the electrolytic reaction can be improved, resulting in faster and more stable copper foil production. By optimizing the shape of the anode plate and the coating material, the electrolytic reaction conditions can be enhanced and corrosion can be prevented, thereby obtaining more uniform, flat, and defect-free copper foil products. By coating treatment and selecting corrosion-resistant materials, the corrosion resistance of the anode plate can be improved, its service life can be extended, and the replacement frequency and cost can be reduced. By utilizing waste plant materials and nanotechnology, environmental pollution can be reduced while meeting the requirements for corrosion resistance and conductivity.

[0024] 2. In the process of producing titanium anode plates for electrolytic copper foil, the coating material utilizes waste plant materials, such as straw, which are treated with nanotechnology to provide excellent corrosion resistance and conductivity. This not only reduces environmental pollution but also improves the service life and electrolytic performance of the titanium anode plate.

[0025] 3. In the process of producing titanium anode plates for electrolytic copper foil, the coating materials include graphene, conductive polymers, metal nanoparticles, and carbon nanotubes. These materials can improve the conductivity and corrosion resistance of the coating, further enhancing the quality of the copper foil. Graphene is a two-dimensional carbon material with high conductivity and corrosion resistance, which can improve the conductivity and corrosion resistance of the coating. Conductive polymers are materials with both conductivity and chemical stability, which can increase the conductivity and corrosion resistance of the coating. The addition of metal nanoparticles can improve the conductivity and corrosion resistance of the coating. These nanoparticles interact with nanocellulose prepared from straw to form a conductive network structure. Carbon nanotubes are one-dimensional nanomaterials with excellent conductivity and corrosion resistance. Combining nanocellulose and carbon nanotubes can achieve even stronger conductivity and better corrosion resistance. Attached Figure Description

[0026] Figure 1 This is a flowchart illustrating the overall process of the present invention. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0028] according to Figure 1 As shown, this embodiment of the invention provides a process for producing titanium anode plates for electrolytic copper foil, the specific steps of which are as follows:

[0029] Step 1: Material Preparation

[0030] Choosing high-purity titanium plates as anode plate material can provide better stability and electrolytic performance, which helps to improve production efficiency; the titanium plates are oxidized to form a uniform oxide layer.

[0031] Step Two: Pattern Design

[0032] Designing an orderly pattern of holes on the oxide layer can increase the surface area of ​​the anode plate, enhance the electrolytic reaction effect, and improve the quality of the copper foil. The shape, size, and spacing of the holes are determined according to the production requirements of electrolytic copper foil.

[0033] Step 3: Anode plate preparation:

[0034] Laser etching technology is used to etch the designed hole pattern onto the oxide layer of the titanium plate; this ensures that the etched holes have good geometry and surface quality, so as to provide stable electrolytic reaction conditions and further improve the quality of the copper foil.

[0035] Step 4, Surface Coating:

[0036] A coating is applied to the etched anode plate surface; a coating material with corrosion resistance and conductivity is selected as the coating to increase the service life and conductivity of the anode plate.

[0037] The raw materials for the coating material include: 18-25 parts by weight of straw, 1-5 parts by weight of graphene, 2-7 parts by weight of conductive polymer, 2-7 parts by weight of metal nanoparticles, and 1-3 parts by weight of carbon nanotubes; wherein: the straw can be wheat straw, corn straw, rice straw, or other crop straw; the conductive polymer is one of polyaniline, polycarbazole, and polythiophene; and the metal nanoparticles are one of copper nanoparticles, silver nanoparticles, nickel nanoparticles, and iron nanoparticles.

[0038] The coating material of this invention utilizes waste plant materials, such as straw, which are treated with nanotechnology to provide excellent corrosion resistance and electrical conductivity. This not only reduces environmental pollution but also improves the service life and electrolytic performance of titanium anode plates.

[0039] The coating material of this invention utilizes graphene, conductive polymers, metal nanoparticles, and carbon nanotubes, which can improve the conductivity and corrosion resistance of the coating, further enhancing the quality of the copper foil. Graphene, a two-dimensional carbon material with high conductivity and corrosion resistance, can improve the conductivity and corrosion resistance of the coating. Conductive polymers, materials possessing both conductivity and chemical stability, can increase the conductivity and corrosion resistance of the coating. The addition of metal nanoparticles further enhances the conductivity and corrosion resistance of the coating. These nanoparticles interact with nanocellulose prepared from straw to form a conductive network structure. Carbon nanotubes, one-dimensional nanomaterials with excellent conductivity and corrosion resistance, combined with nanocellulose, achieve even stronger conductivity and better corrosion resistance.

[0040] The preparation method of the coating material is as follows:

[0041] (1) The straw is pretreated to remove impurities and obtain pure cellulose. The cellulose particles are processed into nanocellulose materials using nanotechnology. The corrosion resistance and conductivity of nanocellulose are enhanced by high-temperature carbonization and oxidation.

[0042] (2) Add nanocellulose, graphene and conductive polymer to water and mix to form a mixture. Then add metal nanoparticles to the mixture and stir thoroughly to disperse them evenly to form a coating material.

[0043] The coating process is as follows:

[0044] (1) Apply the prepared coating material to the surface of the titanium anode plate; use one of the following coating methods, namely brushing, spraying, or dipping, to uniformly coat the surface with the coating.

[0045] (2) Perform heat treatment and curing steps to enhance the adhesion and stability of the coating. Use one of the following equipment for heat treatment and curing: oven, ultraviolet radiation, and heat treatment.

[0046] Step 5: Electrolytic copper foil production:

[0047] The prepared titanium anode plate and cathode plate are assembled in the electrolytic cell; the current density and temperature in the electrolyte are controlled, and through the electrolysis process, a continuous electrolytic copper foil is formed on the surface of the anode plate.

[0048] In this invention, by selecting high-purity titanium plates, optimizing the anode plate preparation steps, designing the hole pattern, and applying a coating, the efficiency of the electrolytic reaction can be improved, resulting in faster and more stable copper foil production. By optimizing the anode plate shape and coating materials, the electrolytic reaction conditions can be enhanced and corrosion can be prevented, thereby obtaining more uniform, flat, and defect-free copper foil products. By applying a coating and selecting corrosion-resistant materials, the corrosion resistance of the anode plate can be improved, its service life extended, and replacement frequency and costs reduced. By utilizing waste plant materials and nanotechnology, environmental pollution can be reduced while meeting the requirements for corrosion resistance and electrical conductivity.

[0049] In summary, the process of this invention can achieve higher production efficiency and copper foil quality, extend the service life of the anode plate, and provide an environmentally friendly solution.

[0050] The process for producing titanium anode plates for electrolytic copper foil provided by the present invention will be further illustrated through the following specific examples, depending on the different coating material formulations and dosages.

[0051] Example 1

[0052] Step 1: Material Preparation

[0053] High-purity titanium plates are selected as the anode plate material; the titanium plates are oxidized to form a uniform oxide layer.

[0054] Step Two: Pattern Design

[0055] An orderly pattern of holes is designed on the oxide layer; the shape, size and spacing of the holes are determined according to the production requirements of electrolytic copper foil.

[0056] Step 3: Anode plate preparation:

[0057] Laser etching technology is used to etch the designed hole pattern onto the oxide layer of the titanium plate, ensuring that the etched holes have good geometry and surface quality.

[0058] Step 4, Surface Coating:

[0059] A coating is applied to the etched anode plate surface; a coating material with corrosion resistance and conductivity is selected as the coating.

[0060] The raw materials for the coating material include: 25 parts by weight of straw, 1 part by weight of graphene, 2 parts by weight of conductive polymer, 2 parts by weight of metal nanoparticles, and 1 part by weight of carbon nanotubes; wherein: the straw can be wheat straw, corn straw, rice straw, or other crop straw; the conductive polymer is one of polyaniline, polycarbazole, and polythiophene; and the metal nanoparticles are one of copper nanoparticles, silver nanoparticles, nickel nanoparticles, and iron nanoparticles.

[0061] The preparation method of the coating material is as follows:

[0062] (1) The straw is pretreated to remove impurities and obtain pure cellulose. The cellulose particles are processed into nanocellulose materials using nanotechnology. The corrosion resistance and conductivity of nanocellulose are enhanced by high-temperature carbonization and oxidation.

[0063] (2) Add nanocellulose, graphene and conductive polymer to water and mix to form a mixture. Then add metal nanoparticles to the mixture and stir thoroughly to disperse them evenly to form a coating material.

[0064] The coating process is as follows:

[0065] (1) Apply the prepared coating material to the surface of the titanium anode plate; use one of the following coating methods, namely brushing, spraying, or dipping, to uniformly coat the surface with the coating.

[0066] (2) Perform heat treatment and curing steps to enhance the adhesion and stability of the coating. Use one of the following methods for heat treatment and curing: oven, ultraviolet radiation, and heat treatment equipment.

[0067] Step 5: Electrolytic copper foil production:

[0068] The prepared titanium anode plate and cathode plate are assembled in the electrolytic cell; the current density and temperature in the electrolyte are controlled, and through the electrolysis process, a continuous electrolytic copper foil is formed on the surface of the anode plate.

[0069] Example 2

[0070] This embodiment uses the process of Example 1, the difference being the different raw material ratios of the coating material;

[0071] The raw materials for the coating material include: 23 parts by weight of straw, 2 parts by weight of graphene, 3 parts by weight of conductive polymer, 4 parts by weight of metal nanoparticles and 1 part by weight of carbon nanotubes.

[0072] The remaining processes remain unchanged, and the specific steps are similar to those in Example 1, so they will not be repeated in this example.

[0073] Example 3

[0074] This embodiment uses the process of Example 1, the difference being the different raw material ratios of the coating material;

[0075] The raw materials for the coating material include: 21 parts by weight of straw, 3 parts by weight of graphene, 5 parts by weight of conductive polymer, 5 parts by weight of metal nanoparticles and 2 parts by weight of carbon nanotubes.

[0076] The remaining processes remain unchanged, and the specific steps are similar to those in Example 1, so they will not be repeated in this example.

[0077] Example 4

[0078] This embodiment uses the process of Example 1, the difference being the different raw material ratios of the coating material;

[0079] The raw materials for the coating material include: 19 parts by weight of straw, 4 parts by weight of graphene, 6 parts by weight of conductive polymer, 5 parts by weight of metal nanoparticles and 2 parts by weight of carbon nanotubes.

[0080] The remaining processes remain unchanged, and the specific steps are similar to those in Example 1, so they will not be repeated in this example.

[0081] Example 5

[0082] This embodiment uses the process of Example 1, the difference being the different raw material ratios of the coating material;

[0083] The raw materials for the coating material include: 18 parts by weight of straw, 5 parts by weight of graphene, 7 parts by weight of conductive polymer, 7 parts by weight of metal nanoparticles and 3 parts by weight of carbon nanotubes.

[0084] The remaining processes remain unchanged, and the specific steps are similar to those in Example 1, so they will not be repeated in this example.

[0085] Table 1. Coating material formulations (parts) in Examples 1-5

[0086]

[0087]

[0088] To verify that the titanium anode plate production process provided in this embodiment of the invention has good corrosion resistance and conductivity, the following test examples illustrate the process for producing titanium anode plates for electrolytic copper foil provided in this embodiment of the invention.

[0089] Test case

[0090] This test example is for the coating provided in Example 3, to test the coating’s corrosion resistance and conductivity.

[0091] Corrosion resistance:

[0092] (1) Acid corrosion test: the weight loss of the coating in a 10% sulfuric acid solution;

[0093] (2) Salt spray test: The coating resists salt spray corrosion for a continuous period of time in a salt spray exposure test conducted in accordance with ASTM-B117.

[0094] Electrical conductivity:

[0095] (1) The resistivity of the conductive coating; (2) The resistance value of the conductive coating.

[0096] Specific testing indicators are shown in Table 2.

[0097] Table 2

[0098]

[0099] According to Table 2, the coating provided by this invention exhibits a corrosion weight loss of less than 0.1 g / m² in a 10% sulfuric acid solution, and can continuously resist salt spray corrosion for over 1000 hours; its resistivity is 2.5 x 10⁻⁵ Ω·cm; and its resistance is 80 Ω, indicating good corrosion resistance and conductivity. When applied to titanium anode plates, it can improve the corrosion resistance and conductivity of the titanium anode plates.

[0100] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for producing titanium anode plates for electrolytic copper foil, characterized in that, Includes the following steps: S1. Select high-purity titanium plates as anode plate materials; perform oxidation treatment on the titanium plates to form a uniform oxide layer; S2. Design an orderly pattern of holes on the oxide layer; S3. Using laser etching technology, the designed hole pattern is etched onto the oxide layer of the titanium plate; S4. Apply a coating to the etched anode plate surface; select a coating material that is both corrosion-resistant and conductive. In step S4, the raw material composition of the coating material is as follows: 18-25 parts by weight of straw, 1-5 parts by weight of graphene, 2-7 parts by weight of conductive polymer, 2-7 parts by weight of metal nanoparticles, 1-3 parts by weight of carbon nanotubes and water. The preparation method of the coating material is as follows: Straw is pretreated to remove impurities and obtain pure cellulose. Nanotechnology is used to process the cellulose particles into nanocellulose materials. High-temperature carbonization and oxidation methods are used to enhance the corrosion resistance and electrical conductivity of nanocellulose. Nanocellulose, graphene, and conductive polymer are added to water and mixed to form a mixture. Then, metal nanoparticles are added to the mixture and stirred thoroughly to disperse them evenly and form a coating material. In step S4, the coating process is as follows: the prepared coating material is uniformly coated onto the surface of the titanium anode plate; then heat treatment and curing steps are performed. The equipment used in the heat treatment and curing steps includes one of the following: an oven and an ultraviolet radiation device.

2. The process for producing titanium anode plates for electrolytic copper foil according to claim 1, characterized in that: The straw used is at least one of wheat straw, corn straw, and rice straw.

3. The process for producing titanium anode plates for electrolytic copper foil according to claim 1, characterized in that: The conductive polymer is one of polyaniline, polycarbazole, and polythiophene.

4. The process for producing titanium anode plates for electrolytic copper foil according to claim 1, characterized in that: The metal nanoparticles are selected from copper nanoparticles, silver nanoparticles, nickel nanoparticles, and iron nanoparticles.

5. The process for producing titanium anode plates for electrolytic copper foil according to claim 1, characterized in that: The coating material is uniformly applied to the surface of the titanium anode plate using one of the following coating methods: brushing, spraying, or dipping.

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