Carbon nanotube dispersion nozzle, device and method

Abstract

The present invention relates to the technical field of carbon nanotube dispersion, and specifically relates to a carbon nanotube dispersion nozzle, a device, and a method. The dispersion nozzle comprises a tube body and a dispersion mechanism; the tube body comprises a tubular main body, a cavity located within the main body, and an inlet and an outlet located at two ends of the main body, the inlet and outlet each being in communication with the cavity; the dispersion mechanism is plugged into the cavity, and comprises a dispersion wall, and dispersion holes disposed on the dispersion wall, the Mohs hardness of the dispersion wall being greater than or equal to 8. Without the need to mix in a high proportion of medium, or even without needing a mixing medium, production costs are reduced, and high-quality carbon nanotubes can be obtained, expanding the application and development of carbon nanotubes.

Description

Dispersion nozzles, equipment and methods for carbon nanotubes

[0001] This application claims priority to Chinese Patent Application No. 202410970075.6, filed on July 19, 2024, entitled "Dispersion Nozzle, Apparatus and Method for Carbon Nanotubes", the contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of carbon nanotube dispersion technology, and more particularly to a carbon nanotube dispersion nozzle, device, and method. Background Technology

[0003] Since their discovery, carbon nanotubes have found significant applications in mechanics, thermodynamics, optics, electronics, catalysis, and sensors due to their enormous specific surface area, chemical stability, unique electronic structure, nanoscale hollow cavities, and excellent adsorption properties. However, as highly polarized, smooth-surfaced inorganic polymers, carbon nanotubes are prone to entanglement and aggregation due to strong van der Waals forces, their large specific surface area, and high aspect ratio. Furthermore, the lack of active groups in carbon nanotubes makes them poorly soluble in common organic solvents and water, significantly limiting their applications. Therefore, achieving high dispersion of carbon nanotubes has become a crucial issue for advancing their applications.

[0004] Currently, the main methods for dispersing carbon nanotubes include sand milling and stirring, and high-energy ball milling. However, existing dispersion methods all require mixing with a relatively high proportion of media, which not only increases production costs but also limits the application and development of carbon nanotubes.

[0005] Therefore, there is a need to develop a new carbon nanotube dispersion nozzle, device, and method to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a dispersion nozzle, device, and method for carbon nanotubes.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A carbon nanotube dispersion nozzle, comprising:

[0009] The tube body includes a tubular body, a cavity located within the body, and an inlet and an outlet located at both ends of the body, the inlet and the outlet respectively communicating with the cavity;

[0010] A dispersion mechanism is disposed within the cavity. The dispersion mechanism includes a dispersion wall and dispersion holes disposed in the dispersion wall. The dispersion wall has a Mohs hardness greater than or equal to 8.

[0011] In one embodiment, the surface material of the dispersion wall is single-crystal diamond or sintered diamond.

[0012] In one embodiment, the dispersing nozzle includes an I-type nozzle or an X-type nozzle. The dispersing orifice of the I-type nozzle extends through the dispersing mechanism in the direction from the inlet to the outlet. The X-type nozzle includes a first dispersing orifice facing the inlet, a second dispersing orifice facing the outlet, and a dispersing channel that connects the first dispersing orifice and the second dispersing orifice and is arranged in an intersecting manner.

[0013] In one embodiment, the dispersion channel includes a first channel communicating with the first dispersion hole and a second channel communicating with the second dispersion hole, the first channel and the second channel being intersected and having an intersection space.

[0014] In one embodiment, the dispersing mechanism includes two first dispersing plates and a second dispersing plate assembled together. The first dispersing plate includes a first side and a second side disposed opposite to each other, a first dispersing hole disposed on the first side, and a first channel disposed on the second side. The second dispersing plate has a third side and a fourth side disposed opposite to each other, a second dispersing hole disposed on the third side, a second channel disposed on the fourth side, and the second side is attached to the fourth side.

[0015] In one embodiment, the first channel is grooved and has a through-hole at each end, the second channel is grooved and has a through-hole at each end, and the first and second channels are opposite to each other and intersect to form a cuboid-shaped intersection space.

[0016] In one embodiment, the first dispersion sheet includes two or more first channels arranged in a cross configuration, with at least one end of each first channel connected to a first dispersion hole; the second dispersion sheet includes two or more second channels arranged in a cross configuration, with at least one end of each second channel connected to a second dispersion hole.

[0017] In one embodiment, the inlet diameter is smaller than the outlet diameter, the inlet diameter ranges from 1mm to 10mm, the outlet diameter ranges from 1mm to 10mm, the aperture of the dispersion hole ranges from 5μm to 1000μm, and the width of the dispersion channel ranges from 5μm to 1000μm.

[0018] In one embodiment, the body includes a first segment and a second segment assembled together, and the dispersing mechanism is mounted at the assembly of the first segment and the second segment.

[0019] In one embodiment, the first dispersion plate and / or the second dispersion plate are provided with pressure relief holes, and the main body is provided with a pressure relief switch that cooperates with the pressure relief holes.

[0020] The present invention also discloses a carbon nanotube dispersion device, which includes a storage unit, a conveying unit, a pressurizing unit and a dispersion unit, wherein the conveying unit is connected to the storage unit and the dispersion unit, the pressurizing unit is connected to the dispersion unit, and the dispersion unit includes a dispersion nozzle as described above.

[0021] In one embodiment, the storage unit includes a slurry tank, which is provided with an exhaust pipe insert, a slurry discharge insert, and a return pipe insert. The conveying unit also includes a return pipe connected to the return pipe insert.

[0022] In one embodiment, the conveying unit includes a conveying pump for pumping slurry from the storage unit to the dispersion unit.

[0023] In one embodiment, the pressurization unit includes a gas pressure pump and a control system for controlling the gas pressure pump, the gas pressure pump including a piston rod.

[0024] In one embodiment, the dispersing unit includes an I-type nozzle and an X-type nozzle, the I-type nozzle being connected to the pressurizing piston rod and the X-type nozzle.

[0025] In one embodiment, the dispersion device further includes a heat exchange unit connected to the dispersion unit.

[0026] This invention also discloses a method for dispersing carbon nanotubes, which includes the following steps:

[0027] S1: Use a dispersant to pre-disperse the carbon nanotube raw material to obtain a pre-dispersed slurry, and store the pre-dispersed slurry in a slurry tank;

[0028] S2: The delivery pump extracts and delivers the pre-dispersed slurry. The pre-dispersed slurry is then forced through the dispersion nozzle by a pressurized piston rod. Under pressure, the slurry is dispersed through the dispersion wall and dispersion holes of the dispersion nozzle, forming turbulence and shear force to obtain carbon nanotube slurry.

[0029] In one embodiment, dispersion is achieved under pressure by creating turbulence and shear force through the dispersion wall, dispersion orifice, and dispersion channel of the dispersion nozzle.

[0030] In one embodiment, a pressurized piston rod is used to force the dispersed slurry through an I-type nozzle and then through an X-type nozzle.

[0031] In one embodiment, the dispersion method further includes:

[0032] S3: The dispersed carbon nanotube slurry is passed through the heat exchange unit and then flows back to the slurry tank through the return pipeline, and is dispersed again 1-3 times to obtain carbon nanotubes.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows: the dispersion nozzle is applied to the dispersion equipment, and the carbon nanotubes obtained by the dispersion method can be dispersed without a medium or with only a small amount of medium. When in use, after pressurization, the fluid energy of turbulence and shear force formed through the dispersion wall and dispersion pores achieves the dispersion effect. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0035] Figure 1 is a schematic diagram of the X-shaped nozzle of the carbon nanotube dispersion nozzle of the present invention;

[0036] Figure 2 is a schematic diagram of the first dispersion plate of the carbon nanotube dispersion nozzle in Figure 1.

[0037] Figure 3 is a schematic diagram of the second dispersion plate of the carbon nanotube dispersion nozzle in Figure 1.

[0038] Figure 4 is a schematic diagram of the dispersion mechanism of the carbon nanotube dispersion nozzle in Figure 1.

[0039] Figure 5 is a schematic diagram of the Type I nozzle of the carbon nanotube dispersion nozzle of the present invention.

[0040] Figure 6 is a schematic diagram of the dispersion mechanism of the carbon nanotube dispersion nozzle in Figure 5.

[0041] Figure 7 is a schematic diagram of the continuous dispersion device of the carbon nanotube dispersion device of the present invention.

[0042] Figure 8 is a schematic diagram of Figure 7 from another angle;

[0043] Figure 9 is a partial schematic diagram from another angle of Figure 7;

[0044] Figure 10 is a partial schematic diagram from another angle of Figure 7;

[0045] Figure 11 is a schematic diagram of the gas pressure pump of the carbon nanotube dispersion device in Figure 7;

[0046] Figure 12 is a partially enlarged schematic diagram of the storage unit of the carbon nanotube dispersion device in Figure 7;

[0047] Figure 13 is a schematic diagram of the principle of the carbon nanotube dispersing device in Figure 7;

[0048] Figure 14 is a schematic diagram of the intermittent dispersion device of the carbon nanotube dispersion device of the present invention;

[0049] Figure 15 is a schematic diagram of Figure 14 from another angle;

[0050] Figure 16 is a partial schematic diagram of Figure 14 from another angle;

[0051] Figure 17 is a flowchart of the carbon nanotube dispersion method of the present invention;

[0052] Figure 18 is a microscopic view of dispersed single-walled carbon nanotubes prepared using the dispersion nozzle, apparatus and method of the present invention.

[0053] Figure 19 is a graph showing the relationship between pressure and flow rate during dispersion using the carbon nanotubes of the present invention via a dispersion nozzle, device, and method. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] This invention discloses a dispersion nozzle for carbon nanotubes. The dispersion nozzle includes a tube body and a dispersion mechanism. The tube body includes a tubular main body, a cavity located within the main body, and an inlet and an outlet located at both ends of the main body. The inlet and outlet are respectively connected to the cavity. The dispersion mechanism is disposed within the cavity. The dispersion mechanism includes a dispersion wall and dispersion holes disposed on the dispersion wall, the dispersion wall having a Mohs hardness greater than or equal to 8. The dispersion nozzle is applied to dispersion equipment, enabling the dispersion of carbon nanotubes without a medium or with only a small amount of medium. During use, pressure is applied, and the dispersion effect is achieved through the turbulent flow and shear force fluid energy generated by the dispersion wall and dispersion holes. This invention discloses a novel dispersion nozzle for carbon nanotubes. It eliminates the need for mixing a high proportion of medium or even any mixing medium, reducing manufacturing costs and obtaining higher quality carbon nanotubes, thus expanding the applications and development of carbon nanotubes.

[0056] The surface material of the dispersion wall is single-crystal diamond or sintered diamond. The dispersion wall has a Mohs hardness of 10, which can withstand the impact of high-pressure fluid and effectively disperse the carbon nanotube slurry. In other embodiments, the entire dispersion mechanism is made of single-crystal diamond or sintered diamond.

[0057] The dispersing nozzle includes either a type I nozzle or an X-type nozzle. In a type I nozzle, the dispersing orifice extends through the dispersing mechanism in a direction from the inlet to the outlet. An X-type nozzle includes a first dispersing orifice facing the inlet, a second dispersing orifice facing the outlet, and a dispersing channel connecting the first and second dispersing orifices and intersecting them. The dispersing channel enhances the dispersing effect, resulting in smaller carbon nanotubes and meeting higher requirements. The dispersing channel includes a first channel communicating with the first dispersing orifice and a second channel communicating with the second dispersing orifice. The first and second channels intersect and have a confluence space. When dispersing the carbon nanotube slurry, it enters from the first dispersing orifice into the first channel, converges into the confluence space, and then disperses in the second channel before flowing out from the second dispersing orifice, achieving effective dispersion. Both the first and second channels are straight and intersecting at a cross shape; alternatively, they can be intersected at other angles to form the X-type nozzle. In other embodiments, the first and second channels may be non-linear, such as curved or arc-shaped; other intersecting channels, such as a third intersecting channel, may also be provided.

[0058] Please refer to Figures 1 to 4 for an example illustrating an X-type nozzle 101. The X-type nozzle includes a tube body 1 and a dispersing mechanism 2. The tube body 1 includes a tubular body 11, a cavity 12 located within the body 11, and an inlet 13 and an outlet 14 located at both ends of the body 11. The inlet 13 and the outlet 14 are respectively connected to the cavity 12. The dispersing mechanism 2 is disposed within the cavity 12. The dispersing mechanism 2 includes a first dispersing plate 21 and a second dispersing plate 22. The body 11 is cylindrical, and the first dispersing plate 21 and the second dispersing plate 22 are fitted together and located at the middle position of the body 11. Both the first dispersing plate 21 and the second dispersing plate 22 are disc-shaped and disposed within the cavity 12, with the diameter of the disc coinciding with or inclined at an appropriate angle to the inner diameter of the cylindrical tube. The first dispersing plate 21 includes a first side surface 211 and a second side surface 212 disposed opposite to each other. Two first dispersion holes 213 penetrating the first dispersion piece 21 are provided on the first side surface 211. A first channel 214 is provided on the second side surface 212, and the first channel 214 connects the two first dispersion holes 213 on the second side surface 212. The second dispersion piece 22 includes a third side surface 221 and a fourth side surface 222 disposed opposite to each other. Two second dispersion holes 223 penetrating the second dispersion piece 22 are provided on the third side surface 221. A second channel 224 is provided on the fourth side surface 222, and the second channel 224 connects the two second dispersion holes 223 on the fourth side surface 222. During assembly, the second side surface 212 and the fourth side surface 222 are fitted together so that the first channel 214 and the second channel 224 intersect each other and form a confluence space at the intersection. The first channel 214 and the second channel 224 are intersecting, and the confluence space is cubic. In this embodiment, the first channel 214 and the second channel 224 are perpendicular to each other in a cross shape, and the confluence space is cubic, forming an X-shaped dispersion channel. The first dispersion holes 213 and the second dispersion holes 223 form dispersion holes. The first side 211 faces the inlet 13, and its surface is provided with single crystal diamond or sintered diamond to form a dispersed wall with a Mohs hardness greater than or equal to 8.

[0059] The first dispersion plate 21 and the second dispersion plate 22 can be assembled back-to-back with the same structure. In other embodiments, the first dispersion plate 21 and the second dispersion plate 22 can have different structures, such as a first dispersion hole 213 and a second dispersion hole 223 with different apertures, or a first channel 214 and a second channel 224 with different widths. The first dispersion plate 21 is also provided with a first pressure relief hole 215, and the second dispersion plate 22 is also provided with a second pressure relief hole 225. When the first dispersion plate 21 and the second dispersion plate 22 are assembled, the first pressure relief hole 215 and the second pressure relief hole 225 are connected. The body 11 is provided with a pressure relief switch (not shown) that cooperates with the first pressure relief hole 215 and the second pressure relief hole 225.

[0060] The diameter of inlet 13 is D1, and the diameter of outlet 14 is D2. The diameter D1 of inlet 13 is smaller than the diameter D2 of outlet 14. Preferably, the diameter D1 of inlet 13 ranges from 1mm to 10mm, the diameter D2 of outlet 14 ranges from 1mm to 10mm, the aperture of the first dispersion hole 213 and the second dispersion hole 223 ranges from 5μm to 1000μm, and the width of the dispersion channels of the first channel 214 and the second channel 215 ranges from 5μm to 1000μm. The body 11 includes a first segment 111 and a second segment 112 assembled together. The dispersion mechanism 2 is installed at the assembly point of the first segment 111 and the second segment 112 for easy assembly and maintenance.

[0061] Please refer to Figures 5 and 6 for an example illustrating a type I nozzle 102. The type I nozzle includes a tube body 3 and a dispersing mechanism 4. The tube body 3 includes a tubular main body 31, a cavity 32 located within the main body 31, and an inlet 33 and an outlet 34 located at both ends of the main body 31. The inlet 33 and outlet 34 are respectively connected to the cavity 32. The dispersing mechanism 4 is disposed within the cavity 32. The dispersing mechanism 4 includes a dispersing wall 41 and dispersing holes 42 disposed on the dispersing wall 41. The dispersing wall 42 has a Mohs hardness greater than or equal to 8. The dispersing holes 42 are disposed through the dispersing mechanism 4 in a direction from the inlet 13 to the outlet 14. The dispersing mechanism 4 includes two or more evenly distributed dispersing holes 42. The dispersing mechanism 4 is also provided with a pressure relief hole 43.

[0062] The diameter of inlet 33 is D3, and the diameter of outlet 34 is D4. The diameter of inlet 33, D3, is smaller than the diameter of outlet 34, D4. Preferably, the diameter of inlet 33, D3, is in the range of 1mm-10mm, the diameter of outlet 34, D4, is in the range of 1mm-10mm, and the aperture of dispersion hole 42 is in the range of 5μm-1000μm.

[0063] This invention also discloses a carbon nanotube dispersion device, comprising a storage unit, a conveying unit, a pressurizing unit, and a dispersion unit. The conveying unit connects to the storage unit and the pressurizing unit, and the pressurizing unit connects to the dispersion unit. The dispersion unit includes a dispersion nozzle as described above. The dispersion device is a media-free wet process device. Through the pressurizing unit and the dispersion unit, emulsification, dispersion, decomposition, and pulverization can be achieved through turbulence and shear force. Emulsification, dispersion, and pulverization are carried out using the fluid energy generated by the ultra-high-speed shear force produced by rapid flow under maximum pressure. This eliminates the need for mixing a high proportion of media or even any mixing medium, reducing production costs and yielding higher quality carbon nanotubes, thus expanding the applications and development of carbon nanotubes.

[0064] Please refer to Figures 7 to 12, which illustrate an example of a carbon nanotube dispersion device S, which is a continuous dispersion device. The dispersion device S includes a storage unit 200, a conveying unit 300, a pressurizing unit 400, a heat exchange unit 500, and a dispersion unit 100. The dispersion unit 100 includes a dispersion nozzle as described above. The dispersion nozzle is an X-type nozzle 101.

[0065] Storage unit 200 includes a slurry tank 5, which is equipped with an exhaust pipe insert 51, a slurry discharge insert 52, and a return pipe insert 53. Delivery unit 300 includes a delivery pump 61 and a delivery pipeline 62 for pumping the slurry from storage unit 200 to dispersion unit. Delivery unit 300 also includes a return pipeline 63 connected to the return pipe insert 53. Both delivery pipeline 62 and return pipeline 63 are equipped with bidirectional valves 64. Pressurization unit 400 includes a gas pressure pump 71 and a control system 72 for controlling the gas pressure pump 71. Gas pressure pump 71 includes a piston rod 711. Heat exchange unit 500 is disposed between dispersion unit 100 and storage unit 200, and includes a cooling pipeline 8.

[0066] Please refer to Figures 7 through 13 for an example to describe the working principle of the continuous dispersion device S.

[0067] Pre-dispersed carbon nanotube slurry is added to slurry tank 5. Pump 61 is started to draw the pre-dispersed slurry from tank 5. The pre-dispersed slurry is then conveyed through pipeline 62 to gas pressure pump 71. Gas pressure pump 71 is started, generating pressure. Piston rod 711 pushes the pre-dispersed slurry from inlet 13 into cavity 12. Under pressure, the pre-dispersed slurry flows rapidly, impacting the dispersion wall and entering the dispersion holes and channels. It is dispersed by the fluid energy generated by the ultra-high-speed shear force, resulting in carbon nanotube slurry that flows out from outlet 14. The carbon nanotube slurry flowing out of the outlet enters a heat exchange unit for cooling and is then transported back to another slurry tank 5 through return pipeline 63, completing one dispersion cycle.

[0068] After the slurry tank 5 receives the carbon nanotube slurry, by switching the slurry discharge plug 52 and the return pipe plug 53 of the slurry tank 5, a delivery pump 61 can be connected to the dispersion nozzle to disperse the carbon nanotube slurry that has already been dispersed once again. By switching, multiple dispersions can be performed continuously to obtain the desired carbon nanotubes.

[0069] In other embodiments, the dispersing nozzle of the continuous dispersing device S is a type I nozzle 102.

[0070] In other embodiments, the dispersing nozzles of the continuous dispersing device S are type I nozzle 102 and type X nozzle 101 arranged in series.

[0071] Please refer to Figures 14 to 16 for an example illustrating a carbon nanotube dispersion device W, which is an intermittent dispersion device. The dispersion device W includes a storage unit 200', a conveying unit 300', a pressurizing unit 400', a heat exchange unit 500', and a dispersion unit 100'. The dispersion unit 100' includes a dispersion nozzle as described above. The dispersion nozzle is a type I nozzle 102. The storage unit 200' includes a slurry tank 5', the conveying unit 300' includes a conveying pipeline 62', the pressurizing unit 400' includes a gas pressure pump 71' and a control system 72', and the heat exchange unit 500 includes a cooling pipeline 8'.

[0072] The working principle of the intermittent dispersion device W is as follows.

[0073] The pre-dispersed carbon nanotube slurry is added to the slurry tank 5' and then conveyed through the delivery pipeline 62' to the gas pressure pump 71'. The gas pressure pump 71' is started, generating pressure to push the pre-dispersed slurry from the inlet 33 into the chamber 32. Under pressure, the pre-dispersed slurry flows rapidly, impacting the dispersion wall and entering the dispersion pores and channels. It is dispersed by the fluid energy generated by the ultra-high-speed shear force, resulting in a carbon nanotube slurry that flows out from the outlet 34, completing the dispersion process. Carbon nanotubes can be manually added to the slurry tank 5' for further dispersion.

[0074] In other embodiments, the dispersion nozzle of the continuous dispersion device W is an X-type nozzle 101.

[0075] In other embodiments, the dispersing nozzles of the continuous dispersing device W are type I nozzle 102 and type X nozzle 101 arranged in series.

[0076] Please refer to Figure 17. This invention also discloses a method for dispersing carbon nanotubes, which includes the following steps:

[0077] S1: Use a dispersant to pre-disperse the carbon nanotube raw material to obtain a pre-dispersed slurry, and store the pre-dispersed slurry in a slurry tank;

[0078] The carbon nanotube raw material is pre-dispersed using CMC, SC or HPC dispersants to obtain a pre-dispersed slurry.

[0079] S2: The delivery pump extracts and delivers the pre-dispersed slurry. The pre-dispersed slurry is then forced through the dispersion nozzle by a pressurized piston rod. Under pressure, the slurry is dispersed through the dispersion wall and dispersion holes of the dispersion nozzle, forming turbulence and shear force to obtain carbon nanotube slurry.

[0080] The gas pressure pump can generate a pressure of 200 MPa, which causes the slurry to generate an ultra-high-speed shear force of 290 m / s to disperse the fluid energy.

[0081] In one embodiment, in step S2, dispersion is achieved by creating turbulence and shear force through the dispersion wall, dispersion orifice, and dispersion channel of the dispersion nozzle under pressure.

[0082] In one embodiment, a pressurized piston rod is used to force the dispersed slurry through an I-type nozzle and then through an X-type nozzle.

[0083] Dispersion methods also include:

[0084] S3: The carbon nanotube slurry obtained by dispersion flows back to the slurry tank through the heat exchange unit and the return pipeline to become a pre-dispersed slurry. It is then dispersed 1-3 times to obtain carbon nanotubes.

[0085] In summary, this invention discloses a dispersion nozzle, apparatus, and method for carbon nanotubes. The dispersion nozzle includes a dispersion mechanism having a dispersion wall, dispersion orifices, and dispersion channels. The dispersion wall has a Mohs hardness greater than or equal to 8. The dispersion apparatus delivers the slurry under pressure generated by a gas pressure pump, with a pressure range of up to 150-220 MPa, enabling the slurry to generate a flow velocity of 260-310 m / s. The fluid energy generated by the ultra-high-speed shear force effectively disperses the slurry through the dispersion nozzle.

[0086] Dispersion nozzles include X-type nozzles and I-type nozzles. These two types of dispersion nozzles have different energy ranges and can meet different needs in different ways. X-type nozzles have higher processing energy and are mainly used in crushing, pulverizing, and dispersion processes. X-type nozzles use single-crystal diamond (MCD), sintered diamond (PCD), and other materials. In most cases, single-crystal diamond is used due to its anti-fouling and wear-resistant properties, while sintered diamond is used for special applications. I-type nozzles have relatively lower processing energy. These nozzles mostly use single-crystal diamond (MCD), but sintered diamond (PCD) can also be used in some applications. The dispersion equipment and dispersion method of the present invention can use a combination of two dispersion devices. By connecting I-type nozzles and X-type nozzles in series, the pressure and slurry inlet and outlet flow rates are effectively controlled to disperse carbon nanotubes. CMC, SC, and HPC dispersants are used for pre-dispersion, and then they are used in series to disperse the carbon nanotube slurry, which can effectively disperse single-walled carbon nanotubes. The dispersed single-walled carbon nanotubes are shown in Figure 18. Please refer to Figure 19. By calculating the required pressure and flow rate, the dispersion nozzle can be set and applied to achieve the desired dispersion effect. The dispersed carbon nanotubes have little or no media, reducing costs and improving applications.

[0087] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A carbon nanotube dispersion nozzle characterized by, It comprises: a tube body comprising a tubular body, a cavity in the body and an inlet and an outlet at both ends of the body, the inlet and outlet are respectively communicated with the cavity; a dispersion mechanism arranged in the cavity, the dispersion mechanism comprises a dispersion wall and a dispersion hole arranged on the dispersion wall, the dispersion wall has a Mohs hardness greater than or equal to 8.

2. The carbon nanotube dispersion nozzle of claim 1, wherein, The surface layer material of the dispersion wall is single crystal diamond or sintered diamond.

3. The carbon nanotube dispersion nozzle of claim 1, wherein, The dispersion nozzle comprises an I-shaped nozzle or an X-shaped nozzle, the dispersion hole of the I-shaped nozzle is arranged through the dispersion mechanism in the direction from the inlet to the outlet; the X-shaped nozzle comprises a first dispersion hole arranged towards the inlet, a second dispersion hole arranged towards the outlet, and a dispersion channel communicating the first and second dispersion holes and arranged intersectingly.

4. The carbon nanotube dispersion nozzle of claim 3, wherein, The dispersion channel comprises a first channel communicating with the first dispersion hole and a second channel communicating with the second dispersion hole, the first and second channels are arranged intersectingly and have an intersection space.

5. The carbon nanotube dispersion nozzle of claim 4, wherein, The dispersion mechanism comprises a first dispersion piece and a second dispersion piece assembled together, the first dispersion piece comprises a first side and a second side arranged oppositely, the first dispersion hole is arranged on the first side, and the first channel is arranged on the second side; the second dispersion piece comprises a third side and a fourth side arranged oppositely, the second dispersion hole is arranged on the third side, the second channel is arranged on the fourth side, and the second side is attached to the fourth side.

6. The carbon nanotube dispersion nozzle of claim 5, wherein, The first channel is in the form of a groove and has a first dispersion hole arranged through one end of the groove, the second channel is in the form of a groove and has a second dispersion hole arranged through one end of the groove, and the first and second channels are opposite and intersectingly arranged to form a square intersection space.

7. The carbon nanotube dispersion nozzle of claim 6, wherein, The first dispersion piece comprises two or more first channels arranged intersectingly, at least one end of each first channel communicates with a first dispersion hole; the second dispersion piece comprises two or more second channels arranged intersectingly, at least one end of each second channel communicates with a second dispersion hole.

8. The carbon nanotube dispersion nozzle of claim 1, wherein, The diameter of the inlet is smaller than the diameter of the outlet, the diameter of the inlet ranges from 1mm to 10mm, the diameter of the outlet ranges from 1mm to 10mm, the diameter of the dispersion hole ranges from 5μm to 1000μm, and the width of the dispersion channel ranges from 5μm to 1000μm.

9. The carbon nanotube dispersion nozzle of claim 1, wherein, The body comprises a first segment and a second segment assembled together, and the dispersion mechanism is mounted at the assembly position of the first segment and the second segment.

10. The carbon nanotube dispersion nozzle of claim 5, wherein, The first dispersion piece and / or the second dispersion piece is provided with a pressure relief hole, and the body is provided with a pressure relief switch matched with the pressure relief hole.

11. A carbon nanotube dispersing apparatus characterized by comprising: It comprises a storage unit, a conveying unit, a pressurizing unit and a dispersion unit, the conveying unit connects the storage unit and the dispersion unit, the pressurizing unit connects the dispersion unit, and the dispersion unit comprises the dispersion nozzle according to any one of claims 1 to 10.

12. The carbon nanotube dispersing apparatus according to claim 11, wherein The storage unit comprises a slurry barrel, and an exhaust pipe insert, a slurry discharge insert and a backflow pipe insert are arranged on the slurry barrel; the conveying unit further comprises a backflow pipe line connected with the backflow pipe insert.

13. The carbon nanotube dispersing apparatus according to claim 11, wherein The conveying unit comprises a conveying pump for pumping the slurry in the storage unit to the dispersion unit.

14. The carbon nanotube dispersing apparatus according to claim 11, wherein The pressurizing unit comprises a gas pressure pump and a control system for controlling the gas pressure pump, and the gas pressure pump comprises a piston rod.

15. The carbon nanotube dispersing apparatus according to claim 14, wherein The dispersion unit comprises an I-shaped nozzle and an X-shaped nozzle, and the I-shaped nozzle is connected with the pressurizing piston rod and the X-shaped nozzle.

16. The carbon nanotube dispersing apparatus according to claim 11, wherein The dispersion device further comprises a heat exchange unit connected with the dispersion unit.

17. A method of dispersing carbon nanotubes, characterized by, It comprises the following steps: S1: pre-dispersing carbon nanotube raw materials using a dispersant to obtain pre-dispersed slurry, and storing the pre-dispersed slurry in a slurry barrel; S2: pumping and conveying the pre-dispersed slurry by a conveying pump, and passing the pre-dispersed slurry through the dispersion nozzle by a pressurizing piston rod, and dispersing the pre-dispersed slurry by turbulent flow and shear force under pressure through the dispersion wall, the dispersion hole and the dispersion channel of the dispersion nozzle to obtain carbon nanotube slurry.

18. The method of dispersing carbon nanotubes according to claim 17, wherein Dispersing by turbulent flow and shear force under pressure through the dispersion wall, the dispersion hole and the dispersion channel of the dispersion nozzle.

19. The method of dispersing carbon nanotubes according to claim 18, wherein Passing the dispersion slurry through the I-shaped nozzle and then through the X-shaped nozzle by the pressurizing piston rod.

20. The method of dispersing carbon nanotubes according to claim 19, wherein The dispersion method further comprises: S3: passing the obtained carbon nanotube slurry through the heat exchange unit, and then flowing back to the slurry barrel through the backflow pipe line, and repeating the dispersion for 1-3 times to obtain carbon nanotubes.

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