A nanometer conductive material dispersion device

Abstract

The utility model relates to a kind of nanometer conductive material dispersion devices, including shear dispersion component and cyclone separator, shear dispersion component includes vertical pipeline type high shear dispersion machine and atomization liquid supply structure, vertical pipeline type high shear dispersion machine also has the atomization mouth of intercommunication high shear dispersion cavity, atomization liquid supply structure is installed in atomization mouth, atomization liquid supply structure has modified liquid intercommunication mouth, atomization liquid supply structure is used to atomize modified liquid and input atomized liquid into high shear dispersion cavity, the material inlet of cyclone separator is interconnected with the top end discharge port of vertical pipeline type high shear dispersion machine. The integration design of vertical pipeline type high shear dispersion machine and atomization liquid supply structure in the present application realizes the synchronous processing of nanometer conductive material dispersion and surface modification, so that nanometer particles complete surface coating while disaggregating. The direct connection of cyclone separator and dispersion machine discharge port constitutes continuous processing system, avoids the material transfer link of traditional batch process, and the separation effect is better.

Description

Technical Field

[0001] This utility model relates to the field of dispersion structure technology, and in particular to a dispersion device for nano-conductive materials. Background Technology

[0002] Nanomaterials (such as carbon nanotubes and graphene) are prone to agglomeration under van der Waals forces due to their high aspect ratio and lack of surface functional groups. This results in poor dispersion uniformity in end applications such as polymer matrices and slurry systems, which severely restricts their conductivity, mechanical enhancement and other properties.

[0003] To solve the above problems, a pre-dispersion process is usually relied upon, which involves using high-energy-consuming equipment to pre-disperse the nano-conductive materials in a solvent to form a pre-dispersion intermediate before putting them into the final production.

[0004] This process has significant drawbacks: ① High cost and low efficiency: Pre-dispersion requires specialized equipment and long processing times, resulting in high energy and labor costs, and limited production capacity; ② Solvent dependence and waste: The proportion of solvents (such as organic solvents or water-based media) in pre-dispersion intermediates is too high (usually exceeding 80%), leading to low utilization of effective components, and solvent recovery or disposal increases the environmental burden; ③ Complex supply chain: Pre-dispersion intermediates containing solvents require special storage and transportation conditions, significantly increasing logistics costs and safety risks; ④ Limited application scenarios: Pre-dispersion intermediates have poor compatibility with end-product manufacturing processes, requiring formulation adjustments for different industries (such as energy storage and coating manufacturing), hindering the large-scale promotion of the technology, and solvent evaporation may cause environmental and health problems, making it difficult to meet the requirements of green manufacturing. Utility Model Content

[0005] Therefore, it is necessary to provide a nano-conductive material dispersion device that can reduce dispersion energy consumption, shorten dispersion time, improve dispersion effect, and expand the application range of nano-conductive materials.

[0006] A nano-conductive material dispersion device, comprising:

[0007] A shear dispersion assembly includes a vertical inline high-shear disperser and an atomizing liquid supply structure. The vertical inline high-shear disperser has a high-shear dispersion chamber, a side inlet and a top outlet respectively connected to the high-shear dispersion chamber, and an atomizing port connected to the high-shear dispersion chamber. The atomizing liquid supply structure is installed at the atomizing port and has a modified liquid connection port. The atomizing liquid supply structure is used to atomize the modified liquid and input the atomized liquid into the high-shear dispersion chamber. A multi-stage vertical stator and rotor driven by a motor are installed in the high-shear dispersion chamber.

[0008] A cyclone separator, which has a material inlet, a solid separation outlet and a gas separation outlet, wherein the material inlet of the cyclone separator is connected to the top discharge port of the vertical inline high shear disperser.

[0009] In one embodiment, the nano-conductive material dispersion device further includes a dynamic metering and feeding mechanism, which includes a screw feeder and a weighing sensor. The outlet of the screw feeder is connected to the side feed port of the vertical inline high-shear disperser through a feed pipe, and the weighing sensor is installed on a support frame below the feeding screw shaft of the screw feeder.

[0010] In one embodiment, the high-shear dispersion cavity is a vertical cylindrical cavity.

[0011] In one embodiment, the high-shear disperser and atomizing liquid supply structure are provided with a jacketed temperature control system outside the high-shear dispersion chamber.

[0012] In one embodiment, the jacketed temperature control system includes a jacket welded to the outer wall of the high shear dispersion chamber.

[0013] In one embodiment, the cyclone separator has a combined structure of a cylindrical upper part and a conical lower part.

[0014] In one embodiment, the cyclone separator has a solid separation outlet at the bottom of the lower part of the cone, a material inlet on one side of the top of the lower part of the cone, and a gas separation outlet at the top of the upper part of the cylinder.

[0015] In one embodiment, the multi-stage vertical stator and rotor comprises three shearing units, which, from top to bottom, are:

[0016] Coarse shearing stage: rotor diameter 80-100mm, tooth gap 2-3mm;

[0017] Medium shear stage: rotor diameter 60-80mm, tooth gap 1-2mm;

[0018] Fine shearing stage: rotor diameter 40-60mm, tooth gap 0.5-1mm.

[0019] In one embodiment, the nano-conductive material dispersion device further includes a PLC control system, which is electrically connected to the frequency converter of the motor, the weighing sensor, the flow meter of the atomizing liquid supply structure, and the motor that controls the multi-stage vertical stator and rotor.

[0020] The nano-conductive material dispersion device provided in this application comprises a shear dispersion component integrating a vertical inline high-shear disperser and a built-in atomizing liquid supply structure. The atomizing port is directly connected to the high-shear chamber, enabling simultaneous shear dispersion of the modified liquid and the nanomaterials. In use, the modified liquid connection port of the atomizing liquid supply structure connects to the modified liquid used to modify the nano-conductive material. For example, when the nano-conductive material is carbon nanotubes, the modified liquid can contain cross-linkable active ingredients and volatile media (such as water or organic solvents). The modified liquid is then sprayed into the high-shear chamber. Through the integrated design of the vertical inline high-shear disperser and the atomizing liquid supply structure, simultaneous dispersion and surface modification of the nano-conductive material are achieved. The multi-stage vertical stator and rotor within the high-shear dispersion chamber generate a composite shear force field, which, combined with the atomized modified liquid sprayed by the atomizing liquid supply structure, allows the nanoparticles to de-agglomerate while simultaneously undergoing surface coating. The direct connection between the cyclone separator and the disperser outlet constitutes a continuous processing system, avoiding the material transfer steps of traditional batch processes and achieving better separation results. This structure significantly improves the dispersion efficiency of nanomaterials, reduces the amount of modifier used, and significantly enhances the stability of product particle size distribution. The vertical layout saves equipment floor space, and the enclosed design meets semiconductor-grade cleanliness requirements. It is particularly suitable for fields with stringent conductivity requirements, such as new energy electrode materials. When using the nano-conductive material dispersion device of this application for surface dispersion modification of conductive materials, the energy consumption of the pre-dispersion process is relatively low and the dispersion time is short due to the significantly reduced amount of dispersant, thus improving the dispersion effect. Moreover, the nano-conductive material dispersion device of this application achieves simultaneous processing of nano-conductive material dispersion and surface modification, significantly improving the stability of material particle size distribution during the dispersion process, thereby expanding the application range of the material and improving process adaptability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a nano-conductive material dispersion device according to an embodiment of the present invention. Detailed Implementation

[0022] To facilitate understanding of this utility model and to make the aforementioned objects, features, and advantages of this utility model more apparent, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this utility model, and preferred embodiments of this utility model are shown in the accompanying drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model. This utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model; therefore, this utility model is not limited to the specific embodiments disclosed below. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of this utility model, "a number" means at least one, such as one, two, etc., unless otherwise explicitly specified. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] This application provides a device for dispersing nano-conductive materials. Please refer to [link / reference]. Figure 1 The nano-conductive material dispersion device includes a shear dispersion component 10 and a cyclone separator 20. The shear dispersion component 10 is used to spray the modified liquid and bind it to the nano-conductive material through shear dispersion. The cyclone separator is used to achieve gas-solid separation.

[0024] The shear dispersion assembly 10 includes a vertical inline high-shear disperser 100 and an atomizing liquid supply structure 200. The vertical inline high-shear disperser 100 has a high-shear dispersion chamber 110, and a side inlet 111 and a top outlet 112 respectively connected to the high-shear dispersion chamber 110. The side inlet 111 is used to pump nano-conductive material b, such as carbon nanotubes, into the high-shear dispersion chamber. The top outlet is used to output the modified material. The processed material flows upward under centrifugal force and is discharged from the top outlet at the top of the chamber.

[0025] The vertical inline high-shear disperser 100 also has an atomizing port 113 connected to the high-shear dispersion chamber 110. The atomizing liquid supply structure 200 is installed at the atomizing port 113. The atomizing liquid supply structure 200 has a modified liquid connection port 210. The atomizing liquid supply structure 200 is used to atomize the modified liquid a and input the atomized liquid into the high-shear dispersion chamber 110. The high-shear dispersion chamber 110 is equipped with a multi-stage vertical stator and rotor 120 driven by a motor. The atomizing liquid supply structure is used to connect and disperse the modified liquid a, that is, to improve the dispersion effect of the nano-conductive material through the modified liquid. This application sprays it in by atomization, which can significantly reduce the amount of modified liquid used and reduce the pre-dispersion energy consumption.

[0026] The cyclone separator 20 has a material inlet 21, a solid separation outlet 22, and a gas separation outlet 23. The material inlet of the cyclone separator is connected to the top discharge port of the vertical inline high-shear disperser. This application uses a cyclone separator, which works by using centrifugal force to separate gas from solid particles. Specifically, the modified material output from the top discharge port 112 enters through the material inlet 21 and rotates within the cyclone separator 20, generating centrifugal force. This causes the heavier solid particles to settle to the bottom and be discharged through the bottom solid separation outlet 22, where the modified fixed nano-conductive material c is collected. The solvent d evaporates and is discharged from the top gas separation outlet 23.

[0027] The nano-conductive material dispersion device provided in this application comprises a shear dispersion component integrating a vertical inline high-shear disperser and a built-in atomizing liquid supply structure. The atomizing port is directly connected to the high-shear chamber, enabling simultaneous shear dispersion of the modified liquid and the nanomaterials. In use, the modified liquid connection port of the atomizing liquid supply structure is used to connect to the modified liquid for modifying the nano-conductive material. For example, when the nano-conductive material is carbon nanotubes, the modified liquid can contain cross-linkable active ingredients and volatile media (such as water or organic solvents). The modified liquid is then sprayed into the high-shear chamber. Through the integrated design of the vertical inline high-shear disperser and the atomizing liquid supply structure, simultaneous dispersion and surface modification of the nano-conductive material are achieved. The multi-stage vertical stator and rotor within the high-shear dispersion chamber generate a composite shear force field, which, combined with the atomized modified liquid sprayed by the atomizing liquid supply structure, allows the nanoparticles to de-agglomerate while simultaneously achieving surface coating. The direct connection between the cyclone separator and the disperser outlet constitutes a continuous processing system, avoiding the material transfer steps of traditional batch processes. This structure significantly improves the dispersion efficiency of nanomaterials, reduces the amount of modifier used, and significantly enhances the stability of product particle size distribution. The vertical layout saves equipment floor space, and the enclosed design meets semiconductor-grade cleanliness requirements. It is particularly suitable for fields with stringent conductivity requirements, such as new energy electrode materials. When using the nano-conductive material dispersion device of this application for surface dispersion modification of conductive materials, the energy consumption of the pre-dispersion process is relatively low and the dispersion time is short due to the significantly reduced amount of dispersant, thus improving the dispersion effect. Moreover, the nano-conductive material dispersion device of this application achieves simultaneous processing of nano-conductive material dispersion and surface modification, significantly improving the stability of material particle size distribution during the dispersion process, thereby expanding the application range of the material and improving process adaptability.

[0028] In one embodiment, the nano-conductive material dispersion device further includes a dynamic metering and feeding mechanism. This mechanism comprises a screw feeder and a weighing sensor. The outlet of the screw feeder is connected to the side inlet of a vertical inline high-shear disperser via a feed pipe. The weighing sensor is mounted on a support frame below the feeding screw shaft of the screw feeder. Thus, the dynamic metering and feeding mechanism, through the cooperation of the screw feeder and the weighing sensor, achieves precise metering of the nanomaterial feed, solving the batch unevenness problem caused by traditional manual feeding.

[0029] In one embodiment, the high-shear dispersion cavity is a vertical cylindrical cavity. For example, the multi-stage vertical stator and rotor includes three-stage shearing units, from top to bottom:

[0030] Coarse shearing stage: rotor diameter 80-100mm, tooth gap 2-3mm;

[0031] Medium shear stage: rotor diameter 60-80mm, tooth gap 1-2mm;

[0032] Fine shearing stage: rotor diameter 40-60mm, tooth gap 0.5-1mm.

[0033] This helps to form a stable axial material flow field, which prolongs the average residence time of nanoparticles in the cavity and ensures full dispersion.

[0034] In one embodiment, the high-shear disperser and atomizing liquid supply structure are equipped with a jacketed temperature control system outside the high-shear dispersion chamber. For example, the jacketed temperature control system includes a jacket welded to the outer wall of the high-shear dispersion chamber. Thus, the jacketed temperature control system achieves rapid heat conduction through the welded jacket structure, reducing the temperature fluctuation range of the high-shear chamber, making it particularly suitable for modifying temperature-sensitive conductive polymer materials.

[0035] In one embodiment, the cyclone separator has a combined structure of a cylindrical upper portion and a conical lower portion. For example, the solid separation outlet is located at the bottom end of the conical lower portion, the material inlet is located on one side of the top end of the conical lower portion, and the gas separation outlet is located at the top end of the cylindrical upper portion. Thus, the optimized cyclone separator structure improves gas-solid separation efficiency, and the conical lower portion design increases the packing density of the separated nanomaterials, which is more conducive to subsequent processing.

[0036] In one embodiment, the nano-conductive material dispersion device further includes a PLC control system, which is electrically connected to the frequency converter of the motor, the weighing sensor, the flow meter of the atomizing liquid supply structure, and the motor controlling the multi-stage vertical stator and rotor. This facilitates overall intelligent control.

[0037] The nano-conductive material dispersion device provided in this application comprises a shear dispersion component integrating a vertical inline high-shear disperser and a built-in atomizing liquid supply structure. The atomizing port is directly connected to the high-shear chamber, enabling simultaneous shear dispersion of the modified liquid and the nanomaterials. In use, the modified liquid connection port of the atomizing liquid supply structure is used to connect to the modified liquid for modifying the nano-conductive material. For example, when the nano-conductive material is carbon nanotubes, the modified liquid can contain cross-linkable active ingredients and volatile media (such as water or organic solvents). The modified liquid is then sprayed into the high-shear chamber. Through the integrated design of the vertical inline high-shear disperser and the atomizing liquid supply structure, simultaneous dispersion and surface modification of the nano-conductive material are achieved. The multi-stage vertical stator and rotor within the high-shear dispersion chamber generate a composite shear force field, which, combined with the atomized modified liquid sprayed by the atomizing liquid supply structure, allows the nanoparticles to de-agglomerate while simultaneously achieving surface coating. The direct connection between the cyclone separator and the disperser outlet constitutes a continuous processing system, avoiding the material transfer steps of traditional batch processes. This structure significantly improves the dispersion efficiency of nanomaterials, reduces the amount of modifier used, and significantly enhances the stability of product particle size distribution. The vertical layout saves equipment floor space, and the enclosed design meets semiconductor-grade cleanliness requirements. It is particularly suitable for fields with stringent conductivity requirements, such as new energy electrode materials. When using the nano-conductive material dispersion device of this application for surface dispersion modification of conductive materials, the energy consumption of the pre-dispersion process is relatively low and the dispersion time is short due to the significantly reduced amount of dispersant, thus improving the dispersion effect. Moreover, the nano-conductive material dispersion device of this application achieves simultaneous processing of nano-conductive material dispersion and surface modification, significantly improving the stability of material particle size distribution during the dispersion process, thereby expanding the application range of the material and improving process adaptability.

[0038] When the device of this application is applied to nano-conductive materials:

[0039] 1. Device Composition:

[0040] ① High shear dispersion structure: The high-speed rotor system can operate stably at high linear speeds, providing sufficient shear force to depolymerize nanomaterial agglomerates; equipped with a temperature control system to achieve precise control of the cavity temperature.

[0041] ② Dynamic metering and feeding structure: The powder feeding structure adopts loss-in-weight metering technology to achieve continuous and precise feeding of nanomaterials and auxiliary powders; the atomizing liquid feeding structure integrates atomizing nozzles and liquid metering system to ensure that surface modifiers are evenly dispersed and cover the powder.

[0042] ③ Gas-solid separation and recovery structure: The gaseous medium and solid powder are separated by negative pressure airflow; a multi-stage filtration system (cyclone separator, bag dust collector) is configured to achieve efficient powder recovery and exhaust gas treatment.

[0043] 2. Preparation method and process

[0044] Step 1: Raw material preparation

[0045] Select nano-conductive materials (such as carbon nanotubes and graphene) and composite surface modifiers. The modifiers contain cross-linkable active ingredients and volatile media (such as water or organic solvents).

[0046] Step 2: Deagglomeration and dispersion: The nano-conductive material is continuously fed into the high-shear dispersion chamber through a dynamic metering feeding structure. The vertical inline high-shear disperser is started and runs at a preset temperature range (above the boiling point of the medium) and high linear velocity to fully deagglomerate the nanomaterial agglomerates.

[0047] Step 3 In-situ surface coating: The composite surface modifier is uniformly sprayed onto the surface of the depolymerized nanomaterial through an atomized liquid supply structure; under the action of thermal and mechanical energy, the active ingredients in the modifier undergo physical / chemical bonding with the surface of the nanomaterial to form a continuous coating layer, while the volatile medium is heated and vaporized.

[0048] Step 4: Forming and collecting easily dispersible composite powder: The coating layer forms a steric hindrance effect on the surface of the nanomaterial, inhibiting re-agglomeration during transportation and storage; the gasification medium is discharged through the gas-solid separation structure, and the surface-coated composite powder is recovered.

[0049] This application has the following advantages:

[0050] 1. Advantages in process cost and efficiency: ① Integrating depolymerization, coating, drying and sorting into a single system eliminates the pre-dispersion step and reduces energy consumption; ② Continuous production improves processing efficiency; ③ Through in-situ coating gasification recovery technology, solvent consumption is reduced and logistics costs are lowered.

[0051] 2. Material Performance and Application Advantages: ① Ready-to-use, easily dispersible powder; the surface coating provides steric hindrance, inhibiting re-agglomeration during storage and transportation; the composite powder can be directly added to the final mixing equipment, shortening the dispersion time; ② Optimized performance; volatile media are completely removed through high-temperature vaporization, improving the conductivity of the final product; the coating and matrix material are chemically bonded, enhancing the strength of the composite material; ③ Expanded application scenarios; by adjusting the coating composition, it can be adapted to the needs of multiple fields such as energy and electronics.

[0052] Environmental advantages: ① Reduced solvent usage and the vaporization medium can be recovered through condensation; ② Highly efficient resource utilization, with a higher proportion of effective components in composite nanomaterials compared to pre-dispersed liquids.

[0053] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. It should be noted that the terms "in one embodiment," "for example," and "again," etc., in this application are intended to illustrate the application and not to limit it. The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A device for dispersing nano-conductive materials, characterized in that, include: A shear dispersion assembly includes a vertical inline high-shear disperser and an atomizing liquid supply structure. The vertical inline high-shear disperser has a high-shear dispersion chamber, a side inlet and a top outlet respectively connected to the high-shear dispersion chamber, and an atomizing port connected to the high-shear dispersion chamber. The atomizing liquid supply structure is installed at the atomizing port and has a modified liquid connection port. The atomizing liquid supply structure is used to atomize the modified liquid and input the atomized liquid into the high-shear dispersion chamber. A multi-stage vertical stator and rotor driven by a motor are installed in the high-shear dispersion chamber. and A cyclone separator, which has a material inlet, a solid separation outlet and a gas separation outlet, wherein the material inlet of the cyclone separator is connected to the top discharge port of the vertical inline high shear disperser.

2. The nano-conductive material dispersion device according to claim 1, characterized in that, The nano-conductive material dispersion device also includes a dynamic metering and feeding mechanism, which includes a screw feeder and a weighing sensor. The outlet of the screw feeder is connected to the side feed port of the vertical inline high-shear disperser through a feed pipe. The weighing sensor is installed on a support frame below the feeding screw shaft of the screw feeder.

3. The nano-conductive material dispersion device according to claim 1, characterized in that, The high-shear dispersion cavity is a vertical cylindrical cavity.

4. The nano-conductive material dispersion device according to claim 1, characterized in that, The high-shear disperser and atomizing liquid supply structure are equipped with a jacketed temperature control system outside the high-shear dispersion chamber.

5. The nano-conductive material dispersion device according to claim 4, characterized in that, The jacketed temperature control system includes a jacket welded to the outer wall of the high shear dispersion chamber.

6. The nano-conductive material dispersion device according to claim 1, characterized in that, The cyclone separator has a combined structure of a cylindrical upper part and a conical lower part.

7. The nano-conductive material dispersion device according to claim 6, characterized in that, The cyclone separator has a solid separation outlet at the bottom of the lower part of the cone, a material inlet on one side of the top of the lower part of the cone, and a gas separation outlet at the top of the upper part of the cylinder.

8. The nano-conductive material dispersion device according to claim 1, characterized in that, The multi-stage vertical stator and rotor comprises three shearing units, from top to bottom as follows: Coarse shearing stage: rotor diameter 80-100mm, tooth gap 2-3mm; Medium shear stage: rotor diameter 60-80mm, tooth gap 1-2mm; Fine shearing stage: rotor diameter 40-60mm, tooth gap 0.5-1mm.

9. The nano-conductive material dispersion device according to claim 1, characterized in that, The nano-conductive material dispersion device also includes a PLC control system, which is electrically connected to the frequency converter of the motor, the weighing sensor, the flow meter of the atomizing liquid supply structure, and the motor that controls the multi-stage vertical stator and rotor.

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