CN209941115U - Device for micro-connection between metal and carbon nanotube fiber - Google Patents
Device for micro-connection between metal and carbon nanotube fiber Download PDFInfo
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- CN209941115U CN209941115U CN201920013792.4U CN201920013792U CN209941115U CN 209941115 U CN209941115 U CN 209941115U CN 201920013792 U CN201920013792 U CN 201920013792U CN 209941115 U CN209941115 U CN 209941115U
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Abstract
The utility model provides a device of little connection between metal and the carbon nanotube fibre, the electrolyte tank sets up on X-Y is to the moving system, still be provided with the conductor between X-Y is to moving system and electrolyte tank, the electrolyte tank intussuseption is filled with electrolyte solution, pulse power supply system's power output end and power input end pass through the wire and link to each other with electrolyte solution and the conductor in the electrolyte tank respectively and have formed the return circuit, pressurization system links to each other with the capillary, set up Z on the capillary to the moving system, the capillary intussuseption is filled with the metal salt solution, the bottom at the electrolyte tank is fixed to the carbon nanotube fibre. The structure of the carbon nano tube fiber cannot be damaged; the size of the connection point can be controlled by controlling the size of the capillary tube, etc.; the connection process is carried out in an electrolyte solution, and other impurities can not be introduced; because the deposition is carried out in a liquid environment, the degree of freedom of the liquid surface during deposition is increased, and the obtained deposited metal has better quality; a reliable joint with low resistance and high strength can be obtained.
Description
Technical Field
The utility model relates to a welding set technical field, more specifically say and relate to a device of micro-connection between metal and the carbon nanotube fibre.
Background
As a novel high-performance material in recent years, carbon nanotube fibers have better mechanical, electrical and thermal conductivity than carbon fibers, and the light high-conductivity characteristics of the carbon nanotube fibers enable the carbon nanotube fibers to have important application prospects in various fields such as wires and cables, flexible high-performance energy devices and composite materials, and are expected to become a next-generation wire material due to good corrosion resistance and environmental stability. This inevitably connects the carbon nanotube fibers to other charged parts (usually metal) in the circuit and requires the tab portion to maintain good mechanical and electrical properties for a long time. The traditional methods for connecting carbon nanotube fibers include soldering, binding or knotting, conductive adhesive, mechanical compression bonding, and ultrasonic welding, which are not well suited for connecting carbon nanotube fibers and metals. Because the carbon material is not easy to be wetted by metal, the brazing process is very difficult at the standard brazing temperature, and a carbide intermediate layer can be formed by brazing; the binding or knotting is only suitable for the connection between the carbon nanotube fibers, and can affect the performance of the joint, such as the orientation and the compactness of the carbon nanotubes; the connector connected by the conductive adhesive has poor mechanical property and is easy to oxidize; the mechanical crimping is easy to crush the carbon nanotube fiber, and the crimping effect and the joint performance are greatly dependent on the crimping pressure; the joint obtained by ultrasonic welding is ideal, but the method is easy to cause the damage of the carbon nano tube structure.
The method can realize the micro connection of the metal and the carbon nanotube fiber by depositing the metal on the carbon nanotube fiber by using an electrochemical deposition method, the method can not damage the structure of the carbon nanotube fiber, the size of a connection point can be controlled, other impurities can not be introduced, and a reliable joint with low resistance and high strength can be obtained. The liquid local distribution ion plating (Electroplating of localized discrete in liquid) technology is used as an electrochemical deposition method, and besides the advantages, as the deposition is carried out in a liquid environment, the degree of freedom of the liquid level during deposition is increased, the quality of the obtained deposited metal is better, and the quality of the joint is better.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes not enough among the prior art, the technical defect that the little connection technique exists between current metal and the carbon nanotube fibre provides a device of little connection between metal and the carbon nanotube fibre, uses liquid local distribution ion plating (Electroplating of localized discrete in liquid) technique to realize the little connection between metal and the carbon nanotube fibre.
The purpose of the utility model is realized by the following technical scheme.
A device for micro-connection between metal and carbon nanotube fiber comprises an electrolyte tank, a three-dimensional motion system, a pulse power supply system and a pressurizing device,
the three-dimensional motion system comprises an X-Y direction motion system and a Z direction motion system, the electrolyte tank is arranged on the X-Y direction motion system, a conductor is further arranged between the X-Y direction motion system and the electrolyte tank, electrolyte solution is filled in the electrolyte tank, a power output end and a power input end of the pulse power supply system are respectively connected with the electrolyte solution and the conductor in the electrolyte tank through leads to form a loop, the pressurization system is connected with a capillary tube, the Z direction motion system is arranged on the capillary tube, metal salt solution is filled in the capillary tube, and the carbon nano tube fibers are fixed at the bottom end of the electrolyte tank.
The pulse power supply system adopts a waveform generator, the waveform generator not only can output rectangular square signals with faster upper and lower edges, but also can output any waveform such as sine waves, triangular waves, trapezoidal waves, sawtooth waves and single pulses, the positive polarity and the negative polarity of the output pulse waveform can be selected at will, and the waveform can be selected according to actual conditions.
The capillary tube is a pure copper capillary tube.
The inner diameter of the capillary tube is 200-500 microns.
The head end of the capillary tube is polished to be in a groove shape, and the tail end of the capillary tube is connected with the pressurizing device.
A method for micro-connection between metal and carbon nanotube fiber comprises the following steps:
step 1, fixing carbon nanotube fibers at the bottom of an electrolyte tank;
step 2, preparing electrolyte solution and metal salt solution according to a proportion, adding the electrolyte solution into an electrolyte tank, filling the metal salt solution into a capillary, immersing the head end of the capillary below the liquid level of the electrolyte solution, and connecting the tail end of the capillary with a pressurizing device;
and 3, starting the three-dimensional motion system, adjusting the relative position between the capillary and the adjacent carbon nano fiber in the whole device by controlling the motion of the X-Y direction motion system and the Z direction motion system, starting the pressurizing device after the adjustment is finished, forming a meniscus of a metal salt solution in the capillary in an electrolyte solution under the action of the pressurizing device, forming a loop when the meniscus is contacted with a conductor, reducing the metal from the metal salt solution to deposit between the adjacent carbon nano tubes, slowly moving the capillary upwards and continuously applying pressure to continuously deposit the metal and finally wrap the carbon nano tubes.
In step 1, the carbon nanotube fibers are cleaned by ultrasonic cleaning before use and then fixed at the bottom of an electrolyte tank.
In step 3, the capillary is moved upward at a speed of 1 to 5 μm/sec.
The peak voltage of the pulse power supply is 800-1000mV, the frequency is 100-1000Hz, the duty ratio is 10-30 percent, and the withdrawal speed of the copper capillary anode is 1-2.5 mu m/min-1And the initial distance between the nozzle and the upper surface of the substrate is 150-250 μm.
The utility model has the advantages that: the structure of the carbon nano tube fiber cannot be damaged; the size of the connection point can be controlled by controlling the size of the capillary tube, etc.; the connection process is carried out in an electrolyte solution, and other impurities can not be introduced; because the deposition is carried out in a liquid environment, the degree of freedom of the liquid surface during deposition is increased, and the obtained deposited metal has better quality; a reliable joint with low resistance and high strength can be obtained.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: the device comprises an electrolyte tank 1, a three-dimensional motion system 2, a pulse power supply system 3, a conductor 4, a capillary 5, a metal salt solution 6, carbon nanotube fibers 7, an electrolyte solution 8 and a pressurizing device 9.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
The technical solution of the present invention is further explained by the following specific examples.
Example one
A device for micro-connection between metal and carbon nanotube fiber comprises an electrolyte tank 1, a three-dimensional motion system 2, a pulse power supply system 3 and a pressurizing device 9,
the three-dimensional motion system 2 comprises an X-Y direction motion system and a Z direction motion system, an electrolyte tank 1 is arranged on the X-Y direction motion system, a conductor 4 is further arranged between the X-Y direction motion system and the electrolyte tank 1, an electrolyte solution 8 is filled in the electrolyte tank 1, a power supply output end and a power supply input end of a pulse power supply system 3 are respectively connected with the electrolyte solution 8 and the conductor 4 in the electrolyte tank 1 through leads to form a loop, a pressurizing system 9 is connected with a capillary 5, the Z direction motion system is arranged on the capillary 5, a metal salt solution 6 is filled in the capillary 5, and a carbon nano tube fiber 7 is fixed at the bottom end of the electrolyte tank 1.
The pulse power supply system 3 adopts a waveform generator, the waveform generator not only can output rectangular square signals with faster upper and lower edges, but also can output any waveform such as sine waves, triangular waves, trapezoidal waves, sawtooth waves and single pulses, the positive polarity and the negative polarity of the output pulse waveform can be selected at will, and the waveform can be selected according to actual conditions.
Example two
On the basis of the first embodiment, the capillary 5 is a pure copper capillary, the inner diameter of the capillary 5 is 200-500 microns, the head end of the capillary 5 is polished to be in a groove shape, and the tail end of the capillary 5 is connected with a pressurizing device.
EXAMPLE III
A method for micro-connection between metal and carbon nanotube fiber comprises the following steps:
step 1, cleaning carbon nanotube fibers by an ultrasonic cleaning mode, and fixing the carbon nanotube fibers at the bottom of an electrolyte tank;
step 2, preparing electrolyte solution and metal salt solution according to a proportion, adding the electrolyte solution into an electrolyte tank, filling the metal salt solution into a capillary, immersing the head end of the capillary below the liquid level of the electrolyte solution, and connecting the tail end of the capillary with a pressurizing device;
and 3, starting the three-dimensional motion system, adjusting the relative position between the capillary and the adjacent carbon nano fiber in the whole device by controlling the motion of the X-Y direction motion system and the Z direction motion system, starting the pressurizing device after the adjustment is finished, forming a meniscus of a metal salt solution in the capillary in an electrolyte solution under the action of the pressurizing device, forming a loop when the meniscus is contacted with a conductor, reducing the metal from the metal salt solution to deposit between the adjacent carbon nano tubes, slowly moving the capillary upwards and continuously applying pressure, wherein the upward moving speed of the capillary is 1-5 microns/second, so that the metal is continuously deposited and finally wraps the carbon nano tubes.
The peak voltage or the peak current, the frequency and the duty ratio of the pulse power supply, the withdrawal speed of the copper capillary anode and the initial distance between the nozzle and the upper surface of the substrate (namely the initial height of the meniscus) are important parameters which can influence the appearance, the structure and even the performance of the connection point of the device; in this embodiment, the peak voltage of the pulse power supply is 800mV, the frequency is 100Hz, the duty ratio is 10%, and the withdrawal speed of the copper capillary anode is 1 μm/min-1And the initial distance of the nozzle from the upper surface of the substrate was 150. mu.m.
Example four
On the basis of the third embodiment, the peak voltage of the pulse power supply is 1000mV, the frequency is 1000Hz, the duty ratio is 30 percent, and the withdrawal speed of the copper capillary anode is 2.5 mu m/min-1And the initial distance of the nozzle from the upper surface of the substrate was 250 μm.
EXAMPLE five
On the basis of the third embodiment, the peak voltage of the pulse power supply is 900mV, the frequency is 800Hz, the duty ratio is 20 percent, and the withdrawal speed of the copper capillary anode is 2.0 μm/min-1And the initial distance of the nozzle from the upper surface of the substrate was 200 μm.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (5)
1. A device for micro-connection between metal and carbon nanotube fibers, comprising: comprises an electrolyte tank, a three-dimensional motion system, a pulse power supply system and a pressurizing device,
the three-dimensional motion system comprises an X-Y direction motion system and a Z direction motion system, the electrolyte tank is arranged on the X-Y direction motion system, a conductor is further arranged between the X-Y direction motion system and the electrolyte tank, electrolyte solution is filled in the electrolyte tank, a power output end and a power input end of the pulse power supply system are respectively connected with the electrolyte solution and the conductor in the electrolyte tank through leads to form a loop, the pressurization system is connected with a capillary tube, the Z direction motion system is arranged on the capillary tube, metal salt solution is filled in the capillary tube, and the carbon nano tube fibers are fixed at the bottom end of the electrolyte tank.
2. The device of claim 1, wherein said micro-connecting means comprises: the pulse power supply system adopts the waveform generator, the waveform generator not only can output rectangular square signals with faster upper and lower edges, but also can output any waveform such as sine waves, triangular waves, trapezoidal waves, sawtooth waves and single pulses, the positive polarity and the negative polarity of the output pulse waveform can be selected at will, and the waveform can be selected according to actual conditions.
3. The device of claim 1, wherein said micro-connecting means comprises: the capillary tube is a pure copper capillary tube.
4. The device of claim 3, wherein said micro-connecting means comprises: the inner diameter of the capillary tube is 200-500 microns.
5. The device of claim 4, wherein said micro-connecting means comprises: the head end of the capillary tube is polished to be in a groove shape, and the tail end of the capillary tube is connected with the pressurizing device.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111411382A (en) * | 2019-01-04 | 2020-07-14 | 天津大学 | Device and method for micro-connection between metal and carbon nanotube fiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111411382A (en) * | 2019-01-04 | 2020-07-14 | 天津大学 | Device and method for micro-connection between metal and carbon nanotube fiber |
| CN111411382B (en) * | 2019-01-04 | 2024-08-13 | 天津大学 | Device and method for micro-connection between metal and carbon nano tube fiber |
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