CN115744882B - Continuous preparation device for carbon nano tube dispersed mist - Google Patents
Continuous preparation device for carbon nano tube dispersed mist Download PDFInfo
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- CN115744882B CN115744882B CN202211391402.XA CN202211391402A CN115744882B CN 115744882 B CN115744882 B CN 115744882B CN 202211391402 A CN202211391402 A CN 202211391402A CN 115744882 B CN115744882 B CN 115744882B
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- conveying device
- carbon nano
- nano tube
- spiral conveying
- dispersion
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 46
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000003595 mist Substances 0.000 title claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 31
- 239000000523 sample Substances 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides a continuous preparation device of carbon nano tube dispersed mist, which consists of a forced feeding motor, a forced feeding conical bin, a spiral stirring device, a screw pushing stepping motor, a spiral conveying device, a drainage pipeline, a tapered extrusion die head, a metal electrode plate, a metal discharge probe, a micro negative pressure collecting bin, a conductive substrate, a guide bracket, a continuous conveying fixed bracket, a direct current power supply and a high-voltage driver. The invention realizes continuous and large-scale dispersion of the carbon nano tube and stable dispersion effect by using the technology and related equipment such as the update and transportation of the creative carbon nano tube forming electrode, the discharge form of the linear dispersion multi-site, the stable discharge parameter regulation and control and the like. And realizes the regulation and control of the dispersion core parameters of the carbon nano tube slurry forming pressure, the discharge site and the discharge distance. Meanwhile, the device has high degree of continuity, large dispersion amount, ideal dispersion effect, simple operation, safety and reliability.
Description
Technical field:
the invention belongs to the field of nano material dispersion and application, and particularly relates to a continuous and large-scale preparation device for carbon nano tube dispersion fog.
The background technology is as follows:
the nano material is easily agglomerated due to the influence of multiple complex factors such as Van der Waals force, hydrogen bonding, topological structure winding and the like. However, the agglomeration phenomenon of the carbon nanotubes is serious due to the high length-diameter ratio of the carbon nanotubes, and the occurrence of the phenomenon prevents the full play of the high-performance endowment of the carbon nanotubes. Therefore, how to solve the problem of agglomeration of carbon nanotubes becomes a key problem of whether the downstream can be directly and well applied.
The dispersion technology which can be applied at present mainly comprises the steps of mechanical dispersion, strong acid oxidation, dispersant addition and the like which are used singly or in combination, but in the dispersion method, the mechanical dispersion leads to insufficient dispersion and non-uniformity of the carbon nano tubes. The oxidation of strong acid can lead to the reduction of the length-diameter ratio of monomer particles, and the addition process of dispersing agent is used, so that the residue of impurities seriously affects the enhancement of mechanical, electrical, thermal and other performances. In view of the above problems, some technologies use the high energy density of plasma to disperse carbon nanotubes, but with such dispersing technologies, the dispersing effect is extremely dependent on control and device development of relevant technical parameters. The dispersion effect is unstable and unsatisfactory due to the key problems of small dispersion amount of carbon nano tubes, difficulty in realizing continuous dispersion, unfixed discharge sites, difficulty in controlling discharge interval and the like, and the large-scale preparation and direct application are difficult to realize.
The invention comprises the following steps:
the invention provides a continuous preparation device for carbon nano tube dispersed mist, which is composed of a forced feeding motor, a forced feeding conical bin, a spiral stirring device, a screw pushing stepping motor, a spiral conveying device, a drainage pipeline, a tapered extrusion die head, a metal electrode plate, a metal discharge probe, a micro negative pressure collecting bin, a conductive substrate, a guide bracket, a continuous conveying fixed bracket, a direct current power supply and a high-voltage driver.
The technical scheme adopted by the invention is as follows: the carbon nano tube is mixed with deionized water and then added into a forced feeding conical bin, a screw pushing stepping motor continuously works, the materials stirred and mixed by the forced feeding motor are continuously conveyed, the feeding speed of the materials is controlled through the rotating speed of the screw pushing stepping motor, and the dispersing efficiency is controlled. The mixed material is conveyed to a tapered extrusion die head, continuously extruded to a guide bracket after having a certain molding structural force, and the extruded water is discharged from a drainage pipeline, so that a continuous carbon nano tube molded electrode is formed. After the carbon nanotube forming electrode covers the guide bracket, the direct current power supply is started, and the high-voltage driver starts to work.
The high-voltage driver is respectively connected with the conductive substrate and the metal electrode plate, the carbon nanotube forming electrode is in direct contact with the conductive substrate, and the surface of the metal electrode plate contains at least one metal discharge probe, if a plurality of the metal discharge probes are equal in length. Because the carbon nano tube forming electrode is continuously conveyed, the effect of continuous updating is achieved, and the core parameters of the discharge distance between the two electrodes, the discharge sites and the like, which influence the dispersion effect of the carbon nano tube, are kept relatively stable. After the high-voltage driver starts to work, discharge arc is continuously generated between the surface of the carbon nanotube forming electrode and the metal discharge probe on the surface of the metal electrode plate, and the carbon nanotubes are dispersed in the micro negative pressure collecting bin in a dispersed mist mode and are collected in a micro negative pressure mode. Finally, the carbon nanotube forming electrode which is continuously transmitted and updated is separated from the guide bracket and recycled, so that the use efficiency is improved.
The beneficial effects of the invention are as follows: the technology and related equipment such as the creative technology of updating and conveying the carbon nanotube forming electrode, the wire dispersion multi-site discharge form, the stable discharge parameter regulation and control are utilized, and the continuous and large-scale dispersion of the carbon nanotubes and stable dispersion effect are realized. And realizes the regulation and control of the dispersion core parameters of the carbon nano tube slurry forming pressure, the discharge site and the discharge distance. Meanwhile, the device has the advantages of high degree of continuity, large dispersion amount, ideal dispersion effect, simple and convenient operation, low construction and maintenance cost, safety and reliability.
Description of the drawings:
FIG. 1 is a schematic diagram of a continuous preparation apparatus for carbon nanotube dispersed mist according to the present invention.
FIG. 2 is a schematic illustration of the dispersion of an arc generated in a micro negative pressure chamber after a carbon nanotube shaped electrode is continuously extruded.
The accompanying drawings: the device comprises a 1-forced feeding motor, a 2-forced feeding conical bin, a 3-spiral stirring device, a 4-screw pushing stepping motor, a 5-spiral conveying device, a 6-drainage pipeline, a 7-tapered extrusion die head, an 8-metal electrode plate, a 9-metal discharge probe, a 10-micro negative pressure collecting bin, a 11-conductive substrate, a 12-guide bracket, a 13-continuous conveying fixed bracket, a 14-direct current power supply and a 15-high voltage driver.
The specific embodiment is as follows:
the invention is further described in terms of the following specific embodiments in conjunction with the accompanying drawings:
as shown in the drawing, the continuous preparation device for the carbon nano tube dispersed mist mainly comprises a forced feeding motor (1), a forced feeding conical bin (2), a spiral stirring device (3), a screw pushing stepping motor (4), a spiral conveying device (5), a drainage pipeline (6), a tapered extrusion die head (7), a metal electrode plate (8), a metal discharge probe (9), a micro negative pressure collecting bin (10), a conductive substrate (11), a guide bracket (12), a continuous conveying fixed bracket (13), a direct current power supply (14) and a high-voltage driver (15). Wherein the forced feeding motor (1) is fixed above the forced feeding conical bin (2) and is directly connected with the spiral stirring device (3); the forced feeding conical bin (2) is fixed above the spiral conveying device (5) and is tightly matched with the spiral conveying device; the screw pushing stepping motor (4) is connected with the spiral conveying device (5), and the material conveying speed can be controlled by adjusting the rotating speed of the screw pushing stepping motor (4), so that the dispersing efficiency is controlled; the spiral conveying device (5) and the guide bracket (11) are directly fixed above the continuous conveying fixed bracket (13); the tapered extrusion die head (7) is fixed at the outlet end of the spiral conveying device (5); the drainage pipeline (6) is positioned at the near outlet end of the spiral conveying device (5) and is connected with each other through a thin pipeline; the guide bracket (11) is fixed on the insulating shell of the spiral conveying device (5), the metal electrode plate (8) is connected with the insulating shell of the spiral conveying device (5), the distance between the metal electrode plate and the guide bracket (11) can be adjusted, at least one metal discharge probe (9) is fixed on the surface of the metal electrode plate (8), if a plurality of metal discharge probes are arranged, the lengths are ensured to be equal, and the core parameters which have key influence on the discharge effect are relatively stable; the conductive substrate (11) is positioned above the guide bracket (12) and is tightly matched with the guide bracket; the direct current power supply (14) is connected with the high-voltage driver (15), the positive electrode of the high-voltage driver (15) is connected with the metal electrode plate (8), and the negative electrode is connected with the conductive substrate (11).
The working principle and the working process of the invention are as follows:
firstly, a forced feeding motor (1) and a screw pushing stepping motor (4) are started simultaneously, carbon nanotubes and deionized water are mixed and then added into a forced feeding conical bin (2), the mixture is stirred through a spiral stirring device (3) to form carbon nanotube slurry, and then the carbon nanotube slurry is continuously pushed forward by a spiral conveying device (5), and the material conveying speed can be controlled by adjusting the rotating speed of the screw pushing stepping motor (4). After the carbon nano tube slurry is transmitted to the tapered extrusion die head (7), the carbon nano tube slurry is acted by the extrusion force of the tapered extrusion die head (7) to form a carbon nano tube forming electrode with a certain forming structural force, so that the carbon nano tube forming electrode in a fixed form is maintained, and the extruded and overflowed water is discharged from the drainage pipeline (6). The carbon nanotube-shaped electrode having a fixed form is continuously fed to the guide bracket (11) and continuously slid on the surface of the guide bracket (11). At the moment, a direct current power supply (13) is started, a high-voltage driver (14) starts to work, a metal discharge probe (9) on the surface of a metal electrode plate (8) and the surface of a carbon nano tube forming electrode which is continuously conveyed form a discharge arc, and the carbon nano tube forming electrode is continuously dispersed in a micro negative pressure collecting bin (10) and is subjected to negative pressure collecting. The continuously conveyed carbon nano tube forming electrode is separated from the guide bracket (12) and then is collected for the second time and recycled. Fig. 2 is a schematic diagram of dispersing an arc generated in a micro negative pressure bin after a carbon nanotube forming electrode is continuously extruded, and because the extruded carbon nanotube forming electrode keeps continuous conveying and dynamic updating, a technical route of dispersing a metal discharge probe with a fixed length into a multi-site line is formed in the process of dispersing discharge by dispersing the metal discharge probe and the surface of the carbon nanotube forming electrode, the dispersion amount of the carbon nanotube is increased, and the relative stability of discharge sites and distances between the metal discharge probe and the continuously updated carbon nanotube forming electrode is maintained, so that an ideal dispersing effect is achieved, and continuous preparation and application can be performed.
Claims (1)
1. The continuous preparation device for the carbon nano tube dispersed mist mainly comprises a forced feeding motor (1), a forced feeding conical bin (2), a spiral stirring device (3), a screw pushing stepping motor (4), a spiral conveying device (5), a drainage pipeline (6), a tapered extrusion die head (7), a metal electrode plate (8), a metal discharge probe (9), a micro negative pressure collecting bin (10), a conductive substrate (11), a guide bracket (12), a continuous conveying fixed bracket (13), a direct current power supply (14) and a high-voltage driver (15);
the forced feeding motor (1) is fixed above the forced feeding conical bin (2) and is directly connected with the spiral stirring device (3), the forced feeding conical bin (2) is fixed above the spiral conveying device (5) and is tightly matched with the spiral conveying device (5), the screw pushing stepping motor (4) is connected with the spiral conveying device (5) and can control the material conveying speed by adjusting the rotating speed of the screw pushing stepping motor (4), the dispersing efficiency is controlled, the spiral conveying device (5) and the guide bracket (11) are directly fixed above the continuous conveying fixed bracket (13), the tapered extrusion die head (7) is fixed at the outlet end of the spiral conveying device (5), the drainage pipeline (6) is positioned at the near outlet end of the spiral conveying device (5) and is mutually connected through a thin pipeline, the guide bracket (11) is fixed on the insulating shell of the spiral conveying device (5), the metal electrode plate (8) is connected with the insulating shell of the spiral conveying device (5) and can adjust the distance between the guide bracket (11), at least one metal discharge probe (9) is fixed on the surface, if a plurality of the metal discharge probes (12) are ensured, the lengths are ensured to be kept equal, the key parameters are equal to each other, the key parameters are stable in the key parameters and are matched with the direct current (14) and are arranged on the direct current power supply device (12), the positive electrode of the high-voltage driver (15) is connected with the metal electrode plate (8), and the negative electrode is connected with the conductive substrate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211391402.XA CN115744882B (en) | 2022-11-08 | 2022-11-08 | Continuous preparation device for carbon nano tube dispersed mist |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211391402.XA CN115744882B (en) | 2022-11-08 | 2022-11-08 | Continuous preparation device for carbon nano tube dispersed mist |
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| Publication Number | Publication Date |
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| CN115744882A CN115744882A (en) | 2023-03-07 |
| CN115744882B true CN115744882B (en) | 2024-03-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374580A (en) * | 2015-12-08 | 2016-03-02 | 超威电源有限公司 | Preparation method for porous electrode |
| CN106082174A (en) * | 2016-06-20 | 2016-11-09 | 青岛科技大学 | A kind of CNT dispersal device |
| CN107963622A (en) * | 2017-12-14 | 2018-04-27 | 宁波埃氪新材料科技有限公司 | A kind of carbon nanotubes dispersing apparatus |
| CN110963482A (en) * | 2019-12-20 | 2020-04-07 | 中国电子科技集团公司第十八研究所 | Method for continuously and selectively separating metal type carbon nano tube from semiconductor type carbon nano tube in gas phase under action of electric field force |
| KR20210112426A (en) * | 2020-03-04 | 2021-09-15 | 현대자동차주식회사 | Manufacturing system of dispersion for cnt and method of manufacturing dispersion for cnt using the same |
-
2022
- 2022-11-08 CN CN202211391402.XA patent/CN115744882B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374580A (en) * | 2015-12-08 | 2016-03-02 | 超威电源有限公司 | Preparation method for porous electrode |
| CN106082174A (en) * | 2016-06-20 | 2016-11-09 | 青岛科技大学 | A kind of CNT dispersal device |
| CN107963622A (en) * | 2017-12-14 | 2018-04-27 | 宁波埃氪新材料科技有限公司 | A kind of carbon nanotubes dispersing apparatus |
| CN110963482A (en) * | 2019-12-20 | 2020-04-07 | 中国电子科技集团公司第十八研究所 | Method for continuously and selectively separating metal type carbon nano tube from semiconductor type carbon nano tube in gas phase under action of electric field force |
| KR20210112426A (en) * | 2020-03-04 | 2021-09-15 | 현대자동차주식회사 | Manufacturing system of dispersion for cnt and method of manufacturing dispersion for cnt using the same |
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| CN115744882A (en) | 2023-03-07 |
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