CN111257384B - Carbon nanotube fiber electro-deformation experiment table and experiment method - Google Patents
Carbon nanotube fiber electro-deformation experiment table and experiment method Download PDFInfo
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- CN111257384B CN111257384B CN202010154686.5A CN202010154686A CN111257384B CN 111257384 B CN111257384 B CN 111257384B CN 202010154686 A CN202010154686 A CN 202010154686A CN 111257384 B CN111257384 B CN 111257384B
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Abstract
The invention discloses a carbon nanotube fiber electro-deformation experiment table and a related experiment method, and belongs to the technical field of electrochemical actuation performance test. Mainly comprises a beaker holding device, an electrode holding device, a displacement measuring device, a power supply and the like. The beaker containing the ionic liquid is placed on a beaker holder and fixed by a beaker holding device, one end of an electrode chuck is led out by a power supply, an Ag/AgCl reference electrode is held by an anode chuck, a stable double-spiral structure carbon nanotube fiber with an S-shaped hook hung at the tail end of a cathode chuck is held by the electrode holding device, the carbon nanotube fiber is respectively fixed by the electrode holding device, and a displacement measuring device is placed in the beaker to measure the electro-deformation shrinkage of the fiber after the power supply is electrified. The invention can reduce the error caused by the external environment to the experiment, prevent the electrolyte solution from generating electrolysis after being electrified, avoid the experiment error caused by bubbles and be beneficial to improving the accuracy of the experimental result of the electro-deformation.
Description
Technical Field
The invention relates to a test bench, in particular to a test bench used when carbon nano tube fibers are used as electrodes to conduct an electro-deformation test in an electrolyte environment. The invention also relates to a method for performing an electro-deformation experiment by using the experiment table, and belongs to the technical field of electrochemical actuation performance test.
Background
In recent years, artificial muscles have been widely focused and studied due to their advantages of light weight, convenient process, good flexibility, and the like. Has great application potential in the fields of aerospace, underwater equipment, bionic manufacture, biological medical treatment, energy collection and the like. However, a complete set of electro-deformation experimental device and a complete set of testing method are not proposed, and because carbon nanotube fibers are light in weight and small in size, axial shrinkage deformation generated when the electro-deformation test is conducted under the condition of electrolyte is only millimeter-level or even micron-level, bubbles generated by liquid electrolysis during the electrification, and factors such as influence of surrounding environment and buoyancy of liquid on fiber electrodes during the experiment have great influence on experimental measurement results. Therefore, the method has important practical value for the research of the test device and the experimental method based on the electric deformation performance of the carbon nano tube fiber.
Disclosure of Invention
The carbon nanotube fiber electrodeformation experiment table can realize the electrodeformation test of the carbon nanotube fiber in the electrolyte environment, and ensure that the fiber can test the axial shrinkage deformation of the fiber electrode in a relatively closed environment under a certain load.
The technical scheme adopted by the invention is that a slideway is welded on a box body of an experimental device, a chain is placed on the slideway, a gear is meshed with the chain, one end of a gear shaft is provided with a handle, the other end of the gear shaft penetrates through the gear to be fixed with the gear, the purpose of rotating the handle to drive the chain and further drive a beaker chuck to move forwards and backwards is achieved, the beaker chuck is fixed on the chain through a fixing screw, a beaker holder is placed at the bottom of the box body, the beaker is placed on the beaker holder, a data collection box and a nonlinear displacement sensor are placed at the bottom of the beaker, the stretching degree of a beaker clamp is controlled through a nut on an adjusting connecting rod, the effect of fixing the beaker is achieved, the electrode clamp chuck is fixed on an electrode clamp chuck bracket through a locking device and an adjusting screw, the stretching degree of the electrode clamp chuck is controlled through the adjusting screw, so that different electrode chucks are supported, an anode chuck of an Ag/AgCl serving as a reference electrode is supported by the electrode chuck, the carbon nanotube fiber with a double-spiral structure is supported by the anode chuck, and the lower end of the fiber is suspended by an S-shaped hook, and the other end of the electrode chuck is connected with a power supply.
The method for carrying out the fiber electrodeformation experiment by the carbon nano tube fiber electrodeformation experiment table comprises the following operation steps:
a. twisting the carbon nano tube fiber to obtain the carbon nano tube fiber with the stable double-helix structure.
b. The electrode clamp is led out by a power supply, and is fixed on the electrode clamp.
c. And an Ag/AgCl is added to the positive electrode chuck to serve as a reference electrode, one end of the fiber is bound with a heavy object, and the other end of the fiber is clamped by the negative electrode chuck.
d. The displacement sensor and the data collection cartridge were fixed at the bottom of the beaker while the electrolyte solution was disposed in the beaker.
e. The beaker is placed on a beaker holder and is fixed by a beaker chuck.
f. The positions of the beaker holding device and the electrode holding device are adjusted, so that more than 80% of the fibers are immersed into the electrolyte, and the heavy objects and the fibers are prevented from contacting the beaker wall and the sensor in the operation process.
g. And switching on a power supply, collecting the shrinkage deformation of the fiber into an electric signal through a displacement sensor, and converting the electric signal into a displacement signal through a data collection box to finally obtain the shrinkage deformation of the carbon nanotube fiber.
The carbon nanotube fiber electro-deformation experiment table and the experiment method can test the electro-actuation performance of the fiber under the conditions of reducing the buoyancy of liquid and preventing the electrolysis of electrolyte solution as much as possible, fully fix the beaker and the electrode chuck and reduce the error caused by the external environment to the experiment in a relatively airtight environment, so that the experiment result is more accurate. Meanwhile, the artificial muscle designed by utilizing the fiber actuation performance has wide application prospect, and can play a reference role in the design of an artificial muscle structure.
Drawings
FIG. 1 is a schematic diagram of a carbon nanotube fiber electro-deformation laboratory bench.
Fig. 2 is an enlarged view of a portion of the beaker holding device.
Fig. 3 is an enlarged view of a portion of the electrode clip applying device.
Fig. 4 is an enlarged view of a portion of the hook S.
Detailed Description
The carbon nanotube fiber electro-deformation test bench and the method for performing the carbon nanotube fiber electro-deformation test by using the test bench according to the present invention will be described in further detail with reference to fig. 1, 2, 3 and 4.
As shown in fig. 1, the structure diagram of the carbon nanotube fiber electro-deformation experiment table mainly comprises the following components: gear (1), box (2), slide (3), chain (4), gear shaft (5), handle (6), electrode holder chuck support (7), locking mechanical system (8), set screw (9), adjusting screw (10), nut (11), beaker chuck (12), beaker (13), beaker support (14), data collection box (15), displacement sensor (16), ag/AgCl reference electrode (17), S-shaped hook (18), carbon nanotube fiber (19), electrode holder chuck (20), power (21) and electrode chuck (22).
The method is characterized in that: the device mainly comprises a beaker holding device, an electrode holding device, a displacement measuring device, a power supply and the like. The novel beaker is characterized in that the slideway (3) is welded on the box body (2), the chain is arranged on the slideway (3), the gear (1) connected through the gear shaft (5) is driven by the rotary handle (6), the chain (4) is driven to do front-back feeding motion, the beaker chuck (12) is driven to do front-back feeding motion, the position of the beaker chuck (12) is adjusted, the beaker (13) arranged on the beaker support (14) is fixed, the beaker chuck (12) is fixed on the side face of the chain (4) through the fixing screw (9), meanwhile, the stretching degree of the beaker chuck (12) can be adjusted through the adjusting screw (10), so that the beaker (13) with different models can be controlled to be additionally held, and the displacement sensor (15) and the data collection box (16) are arranged at the bottom of the beaker (13). The electrode clamping device is fixed on the upper portion of the box body (2), the electrode clamping chuck support (7) is fixed on the upper portion of the box body (2) through the fixing screw (9), the electrode clamping chuck (20) is fixed on the electrode clamping chuck support (7) through the matching of the fixing screw (9) and the locking mechanism (8) through threaded holes, meanwhile, the electrode clamping chuck (20) can move up and down along the electrode clamping chuck support (7) to find the best experimental position, the electrode clamping chuck (20) is similar to the beaker chuck (12), the stretching degree of the electrode clamping chuck (20) can be adjusted through the adjusting screw (10), so that different electrode chucks (22) can be clamped, an S-shaped hook (18) is clamped by the positive electrode chuck of an electrode, a carbon nano tube fiber (19) with a stable double-screw structure is clamped by the negative electrode chuck, an Ag/AgCl reference electrode (17) is hung at the lower end of the fiber, and the other end of the electrode chuck (22) is connected with a power supply (21).
The experimental method of the invention comprises the following specific steps: one end of the carbon nano tube fiber is fixed, the other end is twisted by a motor, after a certain number of turns of twisting, the fiber is folded in half from the middle, and after a certain number of turns of twisting is reversely carried out, the carbon nano tube fiber with a stable double-spiral structure is obtained. The electrode chuck is led out by a power supply, an Ag/AgCl reference electrode is added on the positive electrode chuck of the electrode, the carbon nano tube fiber with the S-shaped hook hung at the other end is clamped by the negative electrode chuck of the electrode, and the angle of the electrode chuck is adjusted and fixed on the electrode chuck. Preparing an electrolyte solution: adding the medicine for providing ions into anhydrous propylene carbonate serving as an organic solvent, preparing electrolyte solution with a certain concentration according to requirements, placing the electrolyte solution into a beaker, placing a displacement sensor and a data collection box into the beaker, placing the beaker on a beaker holder, and fixing the beaker on the beaker holder through rotating a handle and an adjusting screw. And adjusting the electrode clamp chuck support according to the beaker position, enabling more than 80% of fibers suspending the weight to be vertically immersed in water, switching on a power supply (about 3V), collecting the shrinkage deformation of the fibers into an electric signal through a displacement sensor, converting the electric signal into a displacement signal through a data collecting box, and finally obtaining the shrinkage deformation of the fibers.
Claims (5)
1. The utility model provides a carbon nanotube fiber electro-deformation laboratory bench which characterized in that: the beaker holding device, the electrode holding device, the displacement measuring device and the power supply are respectively arranged on the box body; twisting the carbon nano tube fiber to obtain a stable carbon nano tube fiber with a double-helix structure; leading out an electrode chuck by a power supply, holding Ag/AgCl as a reference electrode by a positive electrode chuck, binding one end of the carbon nanotube fiber to a heavy object, clamping the other end by a negative electrode chuck, and fixing the electrode chuck on the electrode chuck; the displacement measuring device consists of a nonlinear displacement sensor and a data collecting box, wherein the data collecting box and the displacement sensor are arranged at the bottom of a beaker for fixing, meanwhile, an electrolyte solution is arranged in the beaker, the beaker is arranged on a beaker holder, and the beaker holder is used for fixing the beaker holder; the positions of the beaker holding device and the electrode holding device are adjusted, so that most of carbon nanotube fibers are immersed into electrolyte, and heavy objects and fibers are prevented from contacting with the beaker wall and the bottom sensor; the method is characterized in that a power supply is connected, fiber shrinkage deformation is collected into an electric signal through a displacement sensor, the electric signal is converted into a displacement signal through a data collection box, the shrinkage deformation of carbon nanotube fibers is finally obtained, a beaker clamping device is welded on a box body (2) through a slide way (3), a chain (4) is arranged on the slide way (3), a gear (1) connected through a gear shaft (5) is driven through a rotary handle (6), the chain (4) is caused to make forward and backward feeding movement, a beaker clamping head (12) is driven to make forward and backward feeding movement, the position of the beaker clamping head (12) is adjusted, a beaker (13) fixedly arranged on a beaker support (14) is fixed on the side surface of the chain (4), the beaker clamping head (12) can be adjusted through a fixing screw (9), meanwhile, the stretching degree of the beaker clamping head (12) can be adjusted through an adjusting screw (10), so that the beakers (13) with different types are controlled to be clamped, an electrode clamping device is fixed on the upper part of the box body (2), an electrode clamping head bracket (7) is fixed on the box body (2) through a fixing screw (9), the position of the electrode clamping head clamping mechanism (20) is fixed on the electrode clamping head (20) through the fixing screw (20) and the electrode clamping head bracket (20) in a movable clamping mechanism (20), the electrode clamp chuck (20) is similar to the beaker chuck (12), and the stretching degree of the electrode clamp chuck (22) is adjusted through the adjusting screw (10), so that different electrode clamp chucks (22) are clamped.
2. A method for carbon nanotube fiber electro-deformation experiments, which is based on the carbon nanotube fiber electro-deformation experiment table as set forth in claim 1, and is characterized in that: fixing one end of the fiber, twisting the other end of the fiber by using a motor, folding the fiber in half from the middle after twisting, and twisting reversely to obtain the carbon nano tube fiber with the double-helix structure; the specific implementation steps are as follows, twisting the carbon nano tube fiber to obtain the carbon nano tube fiber with the double-helix structure; a. the electrode clamp is led out from the power supply, and is fixed on the electrode clamp; b. an Ag/AgCl is added to the positive electrode chuck to serve as a reference electrode, one end of the fiber is bound with a heavy object, and the other end of the fiber is clamped by the negative electrode chuck; c. fixing the displacement sensor and the data collection box at the bottom of the beaker, and simultaneously preparing electrolyte solution in the beaker; d. placing the beaker on a beaker holder, and fixing the beaker by a beaker chuck; e. the positions of the beaker holding device and the electrode holding device are adjusted, so that more than 80% of the fibers are immersed into the electrolyte, and the heavy objects and the fibers are prevented from contacting the beaker wall and the sensor in the operation process; f. and switching on a power supply, collecting the shrinkage deformation of the fiber into an electric signal through a displacement sensor, and converting the electric signal into a displacement signal through a data collection box to finally obtain the shrinkage deformation of the carbon nanotube fiber.
3. The experimental method for carbon nanotube fiber electro-deformation according to claim 2, wherein: the solvent of the electrolyte solution is propylene carbonate.
4. The experimental method for carbon nanotube fiber electro-deformation according to claim 2, wherein: the beaker is fixed and held by the adjusting screw and the handle, the electrode chuck is fixed by the adjusting screw, and the fiber is controlled to be immersed into 80% of the electrolyte solution level.
5. The experimental method for carbon nanotube fiber electro-deformation according to claim 2, wherein: the weight hung at one end of the fiber is a stainless steel S-shaped hook.
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| CN112266494A (en) * | 2020-09-08 | 2021-01-26 | 北京工业大学 | Carbon nanotube fiber-ionic gel artificial muscle and electric actuation performance test method thereof |
| CN112376143B (en) * | 2020-10-23 | 2022-05-20 | 复旦大学 | Implantable ligament substitute material based on oriented carbon nanotube fibers and preparation method thereof |
| CN114216771A (en) * | 2021-12-07 | 2022-03-22 | 北京工业大学 | Carbon nanotube fiber twisting experiment table and test experiment method |
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