Preparation method and application of ferrous metal conductive powder

Abstract

The application provides a preparation method and application of a ferrous metal conductive powder. 3 The preparation method of the ferrous metal conductive powder has the following specifications, including: the mesh value range is 600-1200 meshes; the bulk density range is 1.2-3.8 g / cm 3 ; the ferrous metal conductive powder adopts a porous honeycomb structure type; and the specific preparation method includes the following steps: selecting S1: using porous anti-rust ferrous metal aggregate as a raw material, and adjusting the bulk density of the ferrous metal conductive powder to meet the basic density requirements of the main material. The preparation method and application of the ferrous metal conductive powder provided by the application are convenient to use, and through fine process control and material selection, the ferrous metal conductive powder is optimized in terms of particle size, bulk density and conductivity. This not only improves the performance of the conductive powder in the electronic and electrical fields, but also expands its application range in various application scenarios.

Description

Technical Field

[0001] This invention relates to the field of conductive powder preparation technology, and in particular to a method for preparing and applying a ferrous metal conductive powder. Background Technology

[0002] Carbon-based materials have been used as conductive materials in conductive products for nearly a century. However, due to inherent performance defects, the carbonization and decomposition rate of carbon-based materials accelerates with temperature and time, leading to performance degradation. This results in blind spots in the conductive properties of products, reduced compressive, tensile, and flexural strength, and the volatilization of carbon-based materials at high temperatures, rendering the products without antistatic properties. Furthermore, during use, the leakage and volatilization of carbon-based conductive materials affect the stability of the overall performance in the operating environment.

[0003] However, in existing technologies, the traditional preparation process of ferrous metal conductive powder often suffers from problems such as uneven particle size, difficulty in controlling packing density, and insufficient rust prevention performance. Traditional preparation methods often cannot meet the diverse performance requirements of conductive powder in different application scenarios, thus limiting its application in the electronics and electrical engineering fields.

[0004] Therefore, it is necessary to provide a new method for preparing ferrous conductive powder and its application to solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem solved by this invention is to provide a method for preparing and applying ferrous metal conductive powder by optimizing particle size, bulk density, and conductivity through precise process control and material selection. This not only improves the performance of conductive powder in the electronics and electrical engineering fields but also expands its applicability in various application scenarios.

[0006] To solve the above-mentioned technical problems, the present invention provides a method for preparing ferrous metal conductive powder, wherein the ferrous metal conductive powder has the following specifications, including:

[0007] The mesh count ranges from 600 to 1200 mesh.

[0008] The bulk density ranges from 1.2 to 3.8 g / cm³.

[0009] This ferrous conductive powder adopts a porous honeycomb structure.

[0010] The specific preparation method includes the following steps:

[0011] Select S1: Use porous rust-proof ferrous metal aggregate as raw material, and adjust the bulk density of ferrous metal conductive powder to meet the basic density requirements of the main material. The bulk density range of ferrous metal conductive powder is 1.2-3.8 g / cm³.

[0012] By adjusting the aggregate, the bulk density of the ferrous metal conductive powder can be controlled, making it adaptable to the density requirements of different main materials.

[0013] Classification S2: The porous rust-proof ferrous metal aggregate with a determined bulk density in S1 is classified to obtain different mesh sizes;

[0014] The porous rust-proof ferrous metal aggregate was classified using a grading device to obtain powder materials of different mesh sizes, thus ensuring the uniformity and stability of the particle size of the ferrous metal conductive powder.

[0015] Grading S3: The powder materials of different mesh sizes obtained in grading S2 are graded according to the following proportions:

[0016] Large particle size powder materials: 2-3 parts by weight, and the mesh size of the large particle size powder materials is in the range of 600-700 mesh;

[0017] Medium-sized powder materials: 3-5 parts by weight, and the mesh size of medium-sized powder materials is in the range of 800-1000 mesh;

[0018] Small particle size powder material: 2-5 parts by weight, and the mesh size of the small particle size powder material is 1200 mesh;

[0019] By using powder materials with different mesh sizes, a reasonable distribution of ferrous metal conductive powder in large, medium and small particle sizes was achieved, which improved its performance in antistatic products.

[0020] Drying S4: Dry the ferrous conductive metal powder material obtained by gradation.

[0021] As a further aspect of the present invention, the drying of the ferrous metal conductive powder material in the drying S4 is at 300±10℃, and the drying time is 2-3 hours to ensure the stability and quality of the product.

[0022] The bulk density of the ferrous conductive powder selected in S1 is ±0.5 g / cm³ of the density of the main material to ensure optimal conductivity and application adaptability.

[0023] As a further aspect of the present invention, the selection of the porous rust-proof ferrous metal aggregate is based on the analysis of the density of cementitious materials in the inorganic non-metallic building materials industry and the polymer industry, so as to achieve controllability of the packing density of the ferrous metal conductive powder; and the ferrous metal conductive powder has rust-proof properties.

[0024] As a further aspect of the present invention, the rust-proof performance is based on the selection of porous rust-proof ferrous metal aggregates and the control of drying S4, ensuring that the ferrous metal conductive powder does not rust after long-term use.

[0025] As a further aspect of the present invention, the porous honeycomb structure is formed by grading powder materials of different mesh sizes to improve the surface area and conductivity of the ferrous metal conductive powder.

[0026] As a further aspect of the present invention, the grading equipment includes crushing equipment and a Raymond mill to ensure that the particle size of the ferrous metal conductive powder meets the requirements.

[0027] As a further aspect of the present invention, the porous rust-proof ferrous metal aggregate includes iron, chromium, nickel or molybdenum metal elements. By controlling the proportion of metal elements and adding an appropriate amount of rust inhibitor, the rust-proof performance of the ferrous metal conductive powder can be improved.

[0028] The gradation S3 also includes mixing powder materials of different mesh sizes and adding an appropriate amount of binder during the mixing process to improve the molding performance of ferrous metal conductive powder.

[0029] The drying S4 also includes a surface treatment process for the ferrous metal conductive powder to improve its conductivity and oxidation resistance.

[0030] The ferrous metal conductive powder also includes the addition of an appropriate amount of conductive filler to improve the conductivity of the ferrous metal conductive powder.

[0031] As a further aspect of the present invention, the conductive filler includes graphite, carbon black, or metal powder; and the surface treatment process includes electroplating, chemical plating, or coating methods.

[0032] The ferrous metal conductive powder also includes the addition of an appropriate amount of antioxidant to improve its antioxidant properties.

[0033] As a further aspect of the present invention, the antioxidant includes metal oxides or organic compounds.

[0034] The present invention also provides a method for preparing the aforementioned ferrous conductive powder for use in antistatic products.

[0035] Compared with related technologies, the preparation method and application of the ferrous metal conductive powder provided by this invention have the following beneficial effects:

[0036] This invention provides a method for preparing ferrous metallic conductive powder and its application. Through a carefully designed gradation process, a reasonable distribution of powder materials of different mesh sizes is achieved in the ferrous metallic conductive powder, ensuring its uniformity across large, medium, and small particle sizes. This optimization helps improve the performance of the conductive powder in specific applications of electronic components, making it more suitable for different processes and equipment.

[0037] This invention provides a method for preparing ferrous metal conductive powder and its application. By adjusting the density in the selected steps, the bulk density of the ferrous metal conductive powder is ensured to meet the basic density requirements of the main material, thereby improving its conductivity and application adaptability. This allows the conductive powder to better meet the density requirements of different materials and be widely used in various conductive scenarios.

[0038] This invention provides a method for preparing ferrous metal conductive powder and its application. The drying step employs a drying temperature of 300±10℃ and a drying time of 2-3 hours, ensuring the stability and high quality of the ferrous metal conductive powder. This helps reduce variability during the production process and improves product consistency and reliability.

[0039] This invention provides a method for preparing and applying ferrous metal conductive powder. The porous, rust-resistant ferrous metal aggregate selected in this invention, combined with controlled drying steps, effectively improves the rust-resistant performance of the ferrous metal conductive powder. This makes the conductive powder less prone to corrosion during long-term use, extending its service life.

[0040] This invention provides a method for preparing ferrous metal conductive powder and its application. By employing a porous honeycomb structure—that is, a structure formed by grading powder materials of different mesh sizes—the surface area and conductivity of the ferrous metal conductive powder are effectively improved. This structure helps to improve the efficiency and performance of the conductive powder in terms of electrical conductivity.

[0041] This invention provides a method for preparing ferrous metal conductive powder and its application. By selecting porous, rust-preventive ferrous metal aggregates and adjusting the bulk density of the ferrous metal conductive powder, this invention achieves controllability in the production process. This makes the preparation process more flexible and adaptable, and can meet the needs of different application scenarios. Detailed Implementation

[0042] In an embodiment of the present invention, a method for preparing ferrous metal conductive powder is provided, wherein the ferrous metal conductive powder has the following specifications, including:

[0043] The mesh count ranges from 600 to 1200 mesh.

[0044] The bulk density ranges from 1.2 to 3.8 g / cm³.

[0045] This ferrous conductive powder adopts a porous honeycomb structure.

[0046] The specific preparation method includes the following steps:

[0047] Select S1: Use porous rust-proof ferrous metal aggregate as raw material, and adjust the bulk density of ferrous metal conductive powder to meet the basic density requirements of the main material. The bulk density range of ferrous metal conductive powder is 1.2-3.8 g / cm³.

[0048] By adjusting the aggregate, the bulk density of the ferrous metal conductive powder can be controlled, making it adaptable to the density requirements of different main materials.

[0049] Classification S2: The porous rust-proof ferrous metal aggregate with a determined bulk density in S1 is classified to obtain different mesh sizes;

[0050] The porous rust-proof ferrous metal aggregate was classified using a grading device to obtain powder materials of different mesh sizes, thus ensuring the uniformity and stability of the particle size of the ferrous metal conductive powder.

[0051] Grading S3: The powder materials of different mesh sizes obtained in grading S2 are graded according to the following proportions:

[0052] Large particle size powder materials: 2-3 parts by weight, and the mesh size of the large particle size powder materials is in the range of 600-700 mesh;

[0053] Medium-sized powder materials: 3-5 parts by weight, and the mesh size of medium-sized powder materials is in the range of 800-1000 mesh;

[0054] Small particle size powder material: 2-5 parts by weight, and the mesh size of the small particle size powder material is 1200 mesh;

[0055] By using powder materials with different mesh sizes, a reasonable distribution of ferrous metal conductive powder in large, medium and small particle sizes was achieved, which improved its performance in antistatic products.

[0056] Drying S4: Dry the ferrous conductive metal powder material obtained by gradation.

[0057] The drying process in step S4 involves drying the ferrous conductive metal powder material at 300±10℃ for 2-3 hours to ensure product stability and quality.

[0058] The bulk density of the ferrous conductive powder selected in S1 is ±0.5 g / cm³ of the density of the main material to ensure optimal conductivity and application adaptability.

[0059] The selection of the porous rust-proof ferrous metal aggregate is based on the analysis of the density of cementitious materials in the inorganic non-metallic building materials industry and the polymer industry, so as to achieve controllability of the packing density of the ferrous metal conductive powder; and the ferrous metal conductive powder has rust-proof properties.

[0060] The aforementioned rust-proof performance is based on the selection of porous rust-proof ferrous metal aggregates and the control of drying S4, ensuring that the ferrous metal conductive powder does not rust after long-term use.

[0061] The aforementioned porous honeycomb structure is formed by grading powder materials of different mesh sizes to improve the surface area and conductivity of ferrous metal conductive powder.

[0062] The grading equipment includes crushing equipment and Raymond mill to ensure that the particle size of the ferrous metal conductive powder meets the requirements.

[0063] The porous rust-proof ferrous metal aggregate includes iron, chromium, nickel or molybdenum metal elements. By controlling the proportion of metal elements and adding an appropriate amount of rust inhibitor, the rust-proof performance of the ferrous metal conductive powder is improved.

[0064] The gradation S3 also includes mixing powder materials of different mesh sizes and adding an appropriate amount of binder during the mixing process to improve the molding performance of ferrous metal conductive powder.

[0065] The drying S4 also includes a surface treatment process for the ferrous metal conductive powder to improve its conductivity and oxidation resistance.

[0066] The ferrous metal conductive powder also includes the addition of an appropriate amount of conductive filler to improve the conductivity of the ferrous metal conductive powder.

[0067] The conductive filler includes graphite, carbon black, or metal powder; and the surface treatment process includes electroplating, electroless plating, or coating methods.

[0068] The ferrous metal conductive powder also includes the addition of an appropriate amount of antioxidant to improve its antioxidant properties.

[0069] The antioxidants include metal oxides or organic compounds.

[0070] The present invention also provides a method for preparing the aforementioned ferrous conductive powder for use in antistatic products.

[0071] Example 1:

[0072] The specific preparation method includes the following steps:

[0073] In S1, we used porous rust-proof ferrous metal aggregate as raw material and finely adjusted the bulk density of conductive powder to ensure that it meets the basic density requirements of the main material, with the benchmark being ±0.5g / cm³ of the density of the main material.

[0074] Within the selected base density range of the main material, careful analysis of its density characteristics helps to understand the requirements of conductive powder density in practical applications. This helps ensure good compatibility between the final conductive powder and the main material.

[0075] Choosing suitable porous rust-resistant ferrous metal aggregates, such as iron, chromium, nickel, or molybdenum, and the proportions of these metal elements and the addition of appropriate rust inhibitors, can help improve the rust-resistant performance of conductive powder.

[0076] The bulk density of conductive powder can be controlled by adjusting the proportions or treatment methods of porous rust-resistant ferrous metal aggregates. This density adjustment ensures that the conductive powder meets the basic density requirements of the main material in subsequent applications, guaranteeing optimal conductivity and application adaptability.

[0077] Advanced technologies and equipment, such as density adjustment devices, are used to precisely adjust the density of porous, rust-resistant ferrous metal aggregates. This ensures that the adjusted bulk density remains stable within the specified range of 1.2-3.8 g / cm³.

[0078] By finely adjusting the density of porous rust-resistant ferrous metal aggregate, precise control of the packing density of conductive powder was achieved. This helps improve the conductivity of the conductive powder, making it better suited to the density requirements of different main materials.

[0079] Based on the density of the main material, the adjusted conductive powder can better bond with the main material in practical applications, ensuring product stability. This is significantly beneficial for long-term use and avoiding performance fluctuations caused by density mismatch.

[0080] By employing a method of finely adjusting density, the needs of different application scenarios can be better met, thereby improving production efficiency. This helps to produce conductive powder that better meets specific requirements and reduces the defect rate during the production process.

[0081] Through the fine-tuning of the above steps, the packing density of the conductive powder is ensured to be within the specified range, giving it better conductivity and application stability.

[0082] In classification S2, the selected porous rust-proof ferrous metal aggregates are precisely classified to obtain powder materials of 600 mesh, 800 mesh, 1000 mesh or 1200 mesh.

[0083] For mesh count requirements of 600, 800, 1000, or 1200 mesh, high-precision grading equipment is used to ensure the accuracy of mesh count during the grading process. By adjusting the equipment parameters, finer mesh count separation can be achieved, ensuring the uniformity and stability of particle size.

[0084] A real-time monitoring system is introduced to monitor particle size during the grading process and adjust equipment parameters promptly based on the monitoring results. This helps prevent fluctuations in particle size and ensures that the final powder material meets the specified mesh size range.

[0085] Highly efficient grading equipment, such as Raymond mills, is employed to ensure precise sorting of porous, rust-preventive ferrous metal aggregates according to mesh size requirements. This helps guarantee the consistency of particle size in the prepared ferrous metal conductive powder.

[0086] During the grading process, synergistic control is achieved among powder materials of different mesh sizes. Through reasonable allocation and adjustment, the proportion of 600-mesh, 800-mesh, 1000-mesh, or 1200-mesh powder materials in the final conductive powder is ensured to meet design requirements.

[0087] Precise control of the grading process ensures that the resulting conductive powder particles are of uniform size. This helps improve the stability of the conductive powder in applications and avoids performance fluctuations caused by differences in particle size.

[0088] By setting high-precision mesh counts and monitoring in real time, powder materials with specific mesh counts of 600, 800, 1000, or 1200 can be controlled more precisely. This is crucial for meeting the technical requirements of specific applications.

[0089] Employing precise sorting processes and multi-mesh count collaborative control can improve grading efficiency and reduce defect rates. This helps increase production efficiency, reduce resource waste, and ensure the quality of the final product.

[0090] Through the above refined steps, the particle size of the conductive powder is ensured to be within the specified mesh range, and it has better uniformity and stability, thereby improving the quality and application performance of the product.

[0091] In gradation S3, powder materials of different mesh sizes, including large, medium and small particle sizes, are graded in proportion to ensure performance in specific application areas.

[0092] Design a reasonable formulation ratio based on the performance requirements of specific application areas, including powder materials of different mesh sizes. Ensure that the proportions of large, medium, and small particle sizes in the formulation meet the predetermined technical specifications to obtain the desired conductive powder performance.

[0093] A high-precision mixing control system is introduced to ensure that powder materials of different mesh sizes are accurately mixed according to the designed ratio. This helps to avoid excess or deficiency of different powder materials, ensuring that the final gradation meets the requirements.

[0094] During the gradation process, a real-time monitoring system is installed to monitor the mixed materials in real time and adjust the proportions promptly based on the monitoring results. This helps ensure the uniform mixing of powder materials of different mesh sizes and improves product consistency.

[0095] The gradation formula is adjusted according to the performance requirements of specific application areas to achieve customized performance in terms of conductivity and stability of conductive powder. This fine-tuning helps to meet the special requirements of different industries and application areas.

[0096] By proportionally grading powder materials of different mesh sizes, the performance of conductive powder can be customized according to the performance requirements of specific application areas. This helps to meet the special technical requirements of different industries and application fields.

[0097] A well-designed gradation system can improve the conductivity of conductive powder, ensuring that the conductivity reaches the expected level. This is crucial for the application of conductive powder in the electronics and electrical appliance fields.

[0098] By precisely controlling the proportions and monitoring in real time, we ensure that powder materials of different mesh sizes are mixed uniformly, thus improving the stability and controllability of the product. This helps to avoid performance fluctuations caused by uneven mixing.

[0099] A refined gradation process can maximize the utilization of powder materials of different mesh sizes, reduce waste, and lower production costs. This has a positive impact on improving production efficiency and reducing product costs.

[0100] Through the above refined steps, it is ensured that the conductive powder can achieve a reasonable proportion of powder materials of different mesh sizes in the gradation process according to the design requirements, thereby improving the product's customization and application performance.

[0101] In drying S4, the drying process of the graded black metallic conductive powder is precisely controlled.

[0102] Ensure the drying temperature is precisely controlled within the range of 300±10℃. Employ high-precision drying equipment and temperature control systems to avoid the impact of excessively high or low temperatures on the performance of the conductive powder.

[0103] By carefully adjusting the drying time, ensure that the drying process is completed within 2-3 hours. This helps prevent particle breakage and oxidation caused by over-drying, while ensuring product stability and quality.

[0104] A real-time humidity monitoring system is introduced to monitor humidity during the drying process. Drying conditions are adjusted based on the monitoring results to ensure humidity remains within a controllable range and to prevent humidity from affecting the conductive powder.

[0105] The use of drying equipment with uniform heat transfer ensures that the conductive powder receives a uniform heat distribution throughout the drying process. This helps to avoid changes in particle structure and performance instability caused by localized temperature differences.

[0106] A precisely controlled drying process helps maintain the stability of conductive powder particles. Avoiding excessively high temperatures or prolonged drying times prevents damage and deformation of the particle structure, ensuring consistent product quality.

[0107] By precisely controlling temperature and humidity, oxidation and damage to the conductive powder can be effectively prevented during the drying process. This helps maintain the chemical stability and physical integrity of the conductive powder.

[0108] Uniform heat transfer and real-time humidity monitoring ensured consistent drying conditions across the entire batch of conductive powder, improving product consistency. This is crucial for producing products with similar properties.

[0109] A precisely controlled drying process can avoid excessive energy consumption, improve energy efficiency, and reduce unnecessary production costs. This has a positive impact on both environmental protection and cost reduction.

[0110] Through the above meticulous implementation steps, the temperature and humidity of the ferrous metal conductive powder are precisely controlled during the drying process, thereby improving the stability, consistency and quality of the product.

[0111] Example 2:

[0112] Based on the preparation method and application of ferrous metal conductive powder provided in the first embodiment of this application, the second embodiment of this application proposes another preparation method and application of ferrous metal conductive powder. The second embodiment is merely a further solution of the first embodiment as a further solution of the present invention, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0113] This embodiment is designed for applications requiring high density, and a black metallic conductive powder with a high packing density was prepared.

[0114] Differences from the general implementation:

[0115] In selecting S1, the packing density of the ferrous conductive powder is adjusted through refined operations to make it denser, so as to meet the high density requirements of the main material.

[0116] At the start of the selection process, the raw ferrous conductive metal powder undergoes preliminary screening. Screening removes irregularly shaped, oversized, or undersized particles to ensure a more uniform particle size distribution in subsequent processing.

[0117] By employing particle shape optimization technology, through surface treatment or adjustments to the production process, the ferrous metal conductive powder particles are made more regular and uniform. This helps improve the particle filling properties and enhances the packing density.

[0118] Introducing surface treatment agents, such as surfactants or wetting agents, improves the interparticle interaction forces by forming a thin film on the particle surface, promoting closer packing of particles. This helps to increase the overall packing density.

[0119] By using more precise grading equipment, the particle size distribution of the ferrous conductive powder is adjusted. Optimizing the uniformity of particle size ensures that more particles fill the voids, increasing the packing density.

[0120] A compaction process, such as static pressing or hot pressing, is introduced to compact the ferrous metal conductive powder. By increasing the compressive force between particles, the particles are made to be arranged more tightly together, thereby increasing the bulk density.

[0121] Maintaining a suitable humidity environment during processing avoids electrostatic repulsion between particles, ensuring greater stability of the particles during the stacking process.

[0122] A real-time monitoring system is set up to monitor the bulk density of the ferrous conductive powder in real time. Processing parameters are adjusted based on the monitoring results to ensure that the ideal bulk density is maintained throughout the entire processing.

[0123] By optimizing the packing density, more ferrous conductive powder is ensured to fill the gaps, thereby improving conductivity and reducing resistance.

[0124] Densely packed conductive powder particles flow more easily within the material, which helps improve processing performance and makes it easier to process and shape.

[0125] Increasing bulk density helps improve the strength and sealing of materials, making them more suitable for applications requiring high density.

[0126] By precisely controlling the packing density, material waste can be reduced, production efficiency can be improved, and costs can be lowered.

[0127] By implementing the above refined steps, the packing density of ferrous metal conductive powder can be effectively adjusted, thereby improving the product's performance and applicability.

[0128] In drying S4, the high-temperature drying process of the ferrous conductive metal powder is adjusted through precise operation to ensure that the product achieves higher density and stability.

[0129] Adjust the drying temperature to 320±10℃, employing a high-precision temperature control system to keep temperature fluctuations within a controllable range. Use drying equipment with uniform heat transfer to ensure that the entire batch of conductive powder is treated at a similar temperature, avoiding localized overheating or undercooling.

[0130] During the high-temperature drying process, a real-time humidity monitoring system is installed to ensure that the humidity is maintained at an appropriate level. Precise humidity control helps prevent the conductive powder from clumping and oxidizing during the drying process, thereby maintaining product stability.

[0131] Introducing timely stirring ensures that the conductive powder is heated evenly during the drying process. A well-designed airflow control system allows hot air to flow fully over the conductive powder, preventing localized temperature differences and guaranteeing a uniform drying effect.

[0132] A real-time monitoring system is installed to monitor temperature and humidity parameters during the drying process. Drying conditions are adjusted promptly based on the monitoring results to ensure optimal processing results are maintained throughout the entire process.

[0133] Adjust the drying time to within the range of 2.5-3 hours. By controlling the drying time appropriately, ensure the conductive powder is fully processed at high temperatures, thereby improving the product's density and stability.

[0134] A cooling stage is introduced to gradually reduce the temperature of the conductive powder, avoiding thermal stress caused by rapid cooling and ensuring that the product maintains a stable structure after high-temperature drying.

[0135] High-temperature drying allows the conductive powder particles to pack more tightly, increasing the overall packing density and helping to improve the product's conductivity.

[0136] The finely tuned high-temperature drying process helps remove moisture from the conductive powder, prevents oxidation, enhances product stability, and extends its service life.

[0137] High-temperature treatment helps to make conductive powder particles more compact, reduce the porosity between particles, improve overall density, and thus enhance product performance.

[0138] By optimizing the high-temperature drying process, the conductive powder particles are ensured to be fully compacted, reducing the resistance along the conductive path and improving the conductivity of the product.

[0139] By implementing the above meticulous steps, the treatment effect of conductive powder during high-temperature drying was ensured, thereby improving the density, stability and performance of the product.

[0140] Example 3:

[0141] Based on the preparation method and application of ferrous metal conductive powder provided in the first embodiment of this application, the third embodiment of this application proposes another preparation method and application of ferrous metal conductive powder. The third embodiment is merely a further solution of the first embodiment as a further solution of the present invention, and the implementation of the third embodiment will not affect the separate implementation of the first embodiment.

[0142] This embodiment focuses on improving the oxidation resistance of ferrous metal conductive powder, making it suitable for applications with high requirements for oxidative environments.

[0143] In drying S4, a surface treatment process is introduced, using chemical plating, to improve the oxidation resistance of the ferrous metal conductive powder.

[0144] Formulate a surface treatment solution suitable for ferrous metal conductive powders. This may include specific chemical solutions, such as solutions for copper plating, nickel plating, or other solutions with good oxidation resistance.

[0145] Before electroless plating, the conductive powder undergoes surface cleaning. This can include solvent cleaning or ultrasonic cleaning to remove impurities, grease, or dirt that may affect the surface treatment results.

[0146] Immerse the cleaned conductive powder in the prepared surface treatment solution. Ensure that the conductive powder particles are fully wetted in the solution so that the surface treatment can evenly and thoroughly cover each particle.

[0147] Precisely control the immersion time of the conductive powder in the surface treatment solution. Different surface treatment solutions and conductive powders may require different treatment times, so the immersion time needs to be adjusted according to the specific circumstances.

[0148] Ensure that appropriate chemical reactions occur during the immersion process. This may include the reduction and deposition of metals to form a uniform surface coating. Control the reaction conditions to ensure the uniformity and density of the surface coating.

[0149] After the surface-treated conductive powder is removed from the treatment solution, it is thoroughly washed to remove excess solution. Subsequently, a neutralization process can be performed to ensure the surface pH of the conductive powder is within the appropriate range.

[0150] After surface treatment, a proper drying stage is performed. This may include using a low-temperature oven or other equipment to ensure that the conductive powder can be properly processed in the next step without being affected by the surface treatment process.

[0151] Quality inspection of the conductive powder after surface treatment is performed. Microscopes and scanning electron microscopes can be used to check the uniformity and density of the surface coating to ensure that the expected improvement in antioxidant performance is achieved.

[0152] The uniform and dense coating formed by chemical plating surface treatment can effectively improve the oxidation resistance of ferrous metal conductive powder and extend its service life.

[0153] The coating formed by surface treatment not only improves the antioxidant properties, but also enhances the corrosion resistance of conductive powder, making it more stable in harsh environments.

[0154] A uniform surface coating helps improve the conductivity of conductive powder, reduce resistance, and enhance the overall conductivity of the product.

[0155] Surface-treated conductive powder particles are usually easier to disperse in the matrix material, which helps to improve the uniformity and consistency of the product.

[0156] Depending on the specific application requirements, different types of surface treatment liquids and methods can be selected to achieve customized surface treatment of conductive powder to meet specific performance requirements.

[0157] Through the above refined implementation steps, chemical plating surface treatment can effectively improve the oxidation resistance of ferrous metal conductive powder, providing reliable support for product stability and performance improvement.

[0158] During the production process, adding appropriate amounts of antioxidants, such as metal oxides or organic compounds, can significantly improve the antioxidant properties of ferrous metal conductive powder.

[0159] Choose the appropriate type of antioxidant based on product characteristics and usage environment. Common antioxidants include metal oxides such as aluminum oxide and zinc oxide, and organic compounds such as phenols and hydroxylamines. Depending on the specific needs, single or compound antioxidants can be used.

[0160] Precisely determine the proportion of antioxidants to be added. Adjust the addition ratio according to the type and requirements of the conductive powder, as well as the properties of the antioxidants, to ensure that the basic properties of the conductive powder are not affected while improving the antioxidant performance.

[0161] During the production process, conductive powder and antioxidants are premixed. Appropriate mixing equipment is used to ensure uniform mixing, thereby ensuring that the antioxidants are evenly distributed on the surface of the conductive powder.

[0162] Ensure that the conductive powder containing antioxidants is added at the appropriate stage of the production process. The specific timing of addition can vary depending on the production process, but it is usually done in the early stages of powder preparation to ensure that the antioxidants are evenly distributed in the conductive powder.

[0163] After the conductive powder and antioxidant are mixed, they are precisely stirred and dispersed. This helps ensure that the antioxidant is uniformly coated on the surface of the conductive powder, improving overall dispersibility and compatibility.

[0164] During the addition of antioxidants, it is important to control the temperature and humidity of the environment to prevent the humid environment from affecting the performance of the antioxidants. Maintaining a dry environment helps to preserve the stability of the antioxidants.

[0165] Establish regular quality control procedures to test the content and distribution of antioxidants in the conductive powder. Laboratory tests ensure that the added antioxidant dosage is within the expected range and is uniformly dispersed in the conductive powder.

[0166] Based on experimental results and product performance requirements, the formulation of antioxidants should be adjusted in a timely manner. The formulation should be continuously optimized to achieve the best balance between antioxidant and electrical conductivity.

[0167] Adding antioxidants can effectively extend the service life of conductive powder, improve its stability in oxidizing environments, and thus slow down the aging process of the product.

[0168] By precisely adjusting the proportion of antioxidants added, it is possible to improve antioxidant performance while minimizing adverse effects on conductivity, thus achieving a balance between the two.

[0169] Improving the antioxidant properties of conductive powder helps to enhance the overall reliability of the product, especially in harsh environments with long-term exposure to high temperatures and humidity.

[0170] Enhancing antioxidant properties helps slow down equipment aging, reduce maintenance costs, and extend equipment lifespan.

[0171] By adjusting the type and ratio of antioxidants, conductive powders can be customized to better adapt to different application scenarios and environmental requirements.

[0172] By implementing the above refined steps, adding an appropriate amount of antioxidant helps improve the antioxidant properties of ferrous metal conductive powder, providing reliable support for the long-term stability of the product.

[0173] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments, or they can be applied directly or indirectly, without departing from the principles and spirit of the invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for preparing a ferrous metallic conductive powder, characterized in that, This ferrous metallic conductive powder has the following specifications, including: The mesh count ranges from 600 to 1200 mesh. The bulk density ranges from 1.2 to 3.8 g / cm³. This ferrous conductive powder adopts a porous honeycomb structure. The specific preparation method includes the following steps: Select S1: Use porous rust-proof ferrous metal aggregate as raw material, and adjust the bulk density of ferrous metal conductive powder to meet the basic density requirements of the main material. The bulk density range of ferrous metal conductive powder is 1.2-3.8 g / cm³. By adjusting the aggregate, the bulk density of the ferrous metal conductive powder can be controlled, making it adaptable to the density requirements of different main materials. Classification S2: The porous rust-proof ferrous metal aggregate with a determined bulk density in S1 is classified to obtain different mesh sizes; The porous rust-proof ferrous metal aggregate was classified using a grading device to obtain powder materials of different mesh sizes, thus ensuring the uniformity and stability of the particle size of the ferrous metal conductive powder. Grading S3: The powder materials of different mesh sizes obtained in classification S2 are graded according to the following proportions: Large particle size powder materials: 2-3 parts by weight, and the mesh size of the large particle size powder materials is in the range of 600 mesh-700 mesh; Medium-sized powder materials: 3-5 parts by weight, and the mesh size of medium-sized powder materials is in the range of 800-1000 mesh; Small particle size powder material: 2-5 parts by weight, and the mesh size of the small particle size powder material is 1200 mesh; By using powder materials with different mesh sizes, a reasonable distribution of ferrous metal conductive powder in large, medium and small particle sizes was achieved, which improved its performance in antistatic products. Drying S4: Drying the graded black metallic conductive powder material; The drying process in step S4 involves drying the ferrous conductive metal powder material at 300±10℃ for 2-3 hours to ensure product stability and quality. The bulk density of the ferrous conductive powder adjusted in S1 is set at ±0.5 g / cm³ relative to the density of the main material to ensure optimal conductivity and application adaptability. The selection of the porous rust-proof ferrous metal aggregate is based on the analysis of the density of cementitious materials in the inorganic non-metallic building materials industry and the polymer industry, so as to achieve controllability of the packing density of the ferrous metal conductive powder; and the ferrous metal conductive powder has rust-proof properties. The aforementioned rust-proof performance is based on the selection of porous rust-proof ferrous metal aggregates and the control of drying S4, ensuring that the ferrous metal conductive powder does not rust after long-term use; The aforementioned porous honeycomb structure is formed by grading powder materials of different mesh sizes to improve the surface area and conductivity of ferrous metal conductive powder. The grading equipment includes crushing equipment and Raymond mill to ensure that the particle size of the ferrous metal conductive powder meets the requirements.

2. The method for preparing ferrous metal conductive powder according to claim 1, characterized in that, The porous rust-proof ferrous metal aggregate includes iron, chromium, nickel or molybdenum metal elements. By controlling the proportion of metal elements and adding an appropriate amount of rust inhibitor, the rust-proof performance of the ferrous metal conductive powder is improved. The gradation S3 also includes mixing powder materials of different mesh sizes and adding an appropriate amount of binder during the mixing process to improve the molding performance of ferrous metal conductive powder. The drying S4 also includes a surface treatment process for the ferrous metal conductive powder to improve its conductivity and oxidation resistance. The ferrous metal conductive powder also includes the addition of an appropriate amount of conductive filler to improve the conductivity of the ferrous metal conductive powder.

3. The method for preparing ferrous metal conductive powder according to claim 2, characterized in that, The conductive filler includes graphite, carbon black, or metal powder; and the surface treatment process includes electroplating, electroless plating, or coating methods. The ferrous metal conductive powder also includes the addition of an appropriate amount of antioxidant to improve its antioxidant properties.

4. The method for preparing ferrous metal conductive powder according to claim 3, characterized in that, The antioxidants include metal oxides or organic compounds.

5. The preparation method of the ferrous metallic conductive powder according to any one of claims 1 to 4 is applied in antistatic products.