CN104722234B - Carbon nano tube dispersion device - Google Patents

Abstract

The invention discloses a carbon nanotube dispersion device, which belongs to the field of dispersion of nanometer materials. The device is mainly composed of a carbon nanotube injector, a gas flow channel and a collecting device. In the carbon nanotube injector, the liquefied gas working medium will enter the inside of the carbon nanotube tube. When the nozzle switch is turned on during application, the agglomerated carbon nanotubes can be fully dispersed by using the phase change of the working medium, and the heating belt and the stirring paddle are used to achieve heating respectively. and the purpose of fully mixing, the carbon nanotubes are thoroughly dispersed in the process and will not cause pollution to the carbon nanotubes; the dispersed carbon nanotubes will move to the bottom collection device of the device in the gas flow channel driven by the gas flow, The collecting device is driven by the magnetic stirring device to disperse the carbon nanotubes uniformly during the collecting process. It has good dispersion effect and high efficiency on carbon nanotubes, simple device and convenient control, and low use and maintenance costs.

Description

A carbon nanotube dispersion device

technical field

The invention relates to a carbon nanotube dispersing device, in particular to a device for uniformly dispersing carbon nanotubes to obtain a large number of single carbon nanotubes, belonging to the field of nanomaterial dispersion.

Background technique

Carbon nanotubes are tubular substances with nanoscale diameters formed by curling graphite sheets according to a certain helical angle. It has a very large aspect ratio, and the heat exchange performance along the length direction is better, while the heat exchange performance in the vertical direction is lower. Using its anisotropy and proper orientation, composite materials with excellent thermal conductivity can be obtained . However, due to the strong van der Waals force between carbon nanotubes and its very large aspect ratio, it is easy to agglomerate during production and use, thereby reducing its performance. When in use, it is often necessary to fully disperse the aggregates of carbon nanotubes to achieve the ideal use effect. At present, the dispersion equipment of carbon nanotubes mainly uses ultrasonic vibration, ball mill, etc. to realize the dispersion of carbon nanotubes. Dispersing carbon nanotubes by using the above-mentioned equipment has disadvantages such as incomplete dispersion, long working time, certain damage to carbon nanotubes and low dispersion efficiency.

Chinese invention patent CN201310434933 provides a carbon nanotube dispersion device based on extensional rheology. By periodically changing the volume of the cavity, the mixture of carbon nanotubes and epoxy resin is continuously compressed and relaxed to obtain dispersed carbon nanotubes. . Although this kind of device can prepare carbon nanotubes with good dispersion, it is not conducive to the application of carbon nanotubes in other materials due to the mixing of carbon nanotubes and epoxy resin in the working process.

Contents of the invention

Aiming at the disadvantages of uneven dispersion and easy mixing with the medium in the prior art when carbon nanotubes are dispersed, the present invention provides an efficient and pollution-free device for dispersing carbon nanotubes, which can realize uniform dispersion of carbon nanotubes, The device is simple and convenient to control, and the cost of use and maintenance is low.

In order to achieve the above object, the technical solution adopted by the present invention to solve the technical problems is:

A carbon nanotube dispersing device is mainly composed of an injector, an air flow channel and a collecting device, wherein the injector specifically includes a feeding plug, an upper disk on the injector, a stirring shaft support, a heating belt, an insulating layer, a stirring shaft, a casing, and a stirring paddle , valve control rod, stirring motor, working fluid feeding port, injector lower disk, valve, nozzle; air flow channel and collection device specifically include pipe cap, injector bracket, injector, valve control rod, nozzle, air flow channel, sample delivery Door, perforated tray, magnetic stirrer, air outlet channel, magnetic stirrer housing. The stirring motor is connected with the upper disk of the injector and fixed on the casing. The stirring shaft is connected with the stirring paddle and the lower disk of the injector, and is fixed on the casing through the stirring shaft bracket. Wrapped on the outer surface of the shell, wrapped with an insulation layer, the valve is controlled by the valve control rod, and the outlet is connected with a nozzle. The injector is fixed in the air flow channel through the injector bracket. The upper end of the air flow channel is blocked by a cap, and the lower end is provided with a feeding door. The magnetic stirring device is fixed on the lower end of the porous tray through the shell of the magnetic stirring device, and the porous tray is fixed in the air flow channel. The valve One end of the control rod is connected with a valve, and the other end is placed outside the air flow channel for convenient control, and the bottom end of the air flow channel is provided with an air flow outlet channel.

The beneficial effect of the invention is to provide a device for effectively dispersing carbon nanotubes. The invention has good dispersing effect and high efficiency on carbon nanotubes, simple device and convenient control, and low use and maintenance costs.

Description of drawings

Figure 1 is a structural diagram of a carbon nanotube dispersion device,

Figure 2 is a structural diagram of the injector,

In the figure: 1. Tube cap, 2. Injector bracket, 3. Injector, 4. Valve control rod, 5. Nozzle, 6. Airflow channel, 7. Sample delivery door, 8. Multi-hole tray, 9. Magnetic stirring device , 10. Air outlet channel, 11. Magnetic stirring device shell, 12. Filling plug, 13. Disk on injector, 14. Stirring shaft bracket, 15. Heating belt, 16. Insulation layer, 17 Stirring shaft, 18. Shell, 19. Stirring paddle, 21. Stirring motor, 22. Working medium feeding port, 23. Disk under injector, 24. Valve.

detailed description

Below in conjunction with accompanying drawing, the present invention is further described concrete implementation method:

With reference to Fig. 1, shown in Fig. 2, a kind of carbon nanotube dispersing device mainly is made up of injector 3, air flow channel 6 and collection device, is characterized in that: injector specifically comprises feeding plug 12, injector upper disk 13, stirring shaft Support 14, heating belt 15, insulation layer 16, stirring shaft 17, shell 18, stirring paddle 19, valve control rod 4, stirring motor 21, working medium feeding port 22, injector lower disk 23, valve 24, nozzle 5; The device specifically includes a tube cap 1, an injector bracket 2, a sample delivery door 7, a porous tray 8, a magnetic stirring device 9, an air outlet channel 10, and a magnetic stirring device housing 11; the stirring motor 21 is connected to the upper disk 13 of the injector and is fixed on the On the casing 18, the stirring shaft 17 is connected with the stirring paddle 19 and the lower magnetic disk 23 of the injector, and is fixed on the casing 18 through the stirring shaft bracket 14, and the casing 18 is connected with the working medium feeding port 22, the feeding plug 12 and the valve 24, and the heating belt 15 Wrapped on the outer surface of the shell 18, wrapping the insulation layer 16 outside, the valve 24 controls the switch state through the valve control rod 4, and the outlet is connected with the nozzle 5; the injector 3 is fixed in the air flow channel 6 through the injector bracket 2, and the upper end of the air flow channel 6 It is blocked by the pipe cap 1, and the lower end is provided with a sample feeding door 7, and the magnetic stirring device 9 is fixed on the lower end of the porous tray 8 through the shell 11 of the magnetic stirring device, and the porous tray 8 is fixed in the air flow channel, and one end of the valve control rod 4 is connected with a valve 24 , the other end is placed outside the airflow channel 6 for easy control, and the bottom end of the airflow channel 6 is provided with an airflow outlet channel 10 .

The working principle and working process of the present invention are:

Open the cap 1, add carbon nanotubes and liquid working fluid respectively through the feeding plug 12 and the working fluid feeding port 22, turn on the stirring motor 21 to drive the upper disk 13 of the injector to rotate, and make the lower disk 23 and the stirring shaft of the injector through magnetic engagement 17 and stirring paddle 19 rotate synchronously, and stirring content prevents delamination. Open the sample delivery door 7, place the open container containing the sample on the porous tray 8, close the sample delivery door 7 and the tube cap 1, power the heating belt 15 to work, heat the injector 3, and the magnetic stirring device to work on the sample Stirring is carried out, the valve control rod 4 is opened to atomize and spray the contents of the injector 3, and the dispersed carbon nanotubes are received by the sample and uniformly mixed with it.

Claims (1)

1. a kind of CNT dispersal device, is mainly made up of ejector (3), gas channel (6) and collection device, its feature exists In：Ejector specifically includes charging plug (12), disk (13), stirring bracing strut (14), heating tape (15), heat-insulation layer on ejector (16), shaft (17), shell (18), stirring paddle (19), valve controling rod (4), stirring motor (21), working medium charge door (22), disk (23), valve (24), nozzle (5) under ejector；Collection device specifically include pipe cap (1), ejector support (2), Sample presentation door (7), perforated trays (8), magnetic stirring apparatuses (9), air stream outlet passage (10), magnetic stirring apparatuses shell (11)； Stirring motor (21) is connected with disk on ejector (13) and is fixed on shell (18), and shaft (17) is connected with stirring paddle (19) disk (23) and under ejector, are fixed on shell (18) by stirring bracing strut (14), shell (18) is connected with working medium Charge door (22), charging plug (12) and valve (24), heating tape (15) are wound in shell (18) outer surface, outer wrap heat-insulation layer (16), valve (24) passes through valve controling rod (4) controlling switch state, and exit is connected to nozzle (5)；Ejector (3) passes through spray Emitter support (2) is fixed in gas channel (6), and gas channel (6) upper end is passed through pipe cap (1) and blocked, and lower end is provided with sample presentation door (7), magnetic stirring apparatuses (9) are fixed on perforated trays (8) lower end, perforated trays (8) by magnetic stirring apparatuses shell (11) It is fixed in gas channel, valve controling rod (4) one end is connected with valve (24), the other end is placed in gas channel (6) and facilitates outward control System, gas channel (6) bottom is provided with air stream outlet passage (10).