CN111257384A - Carbon nanotube fiber electrodeformation experiment table and experiment method - Google Patents
Carbon nanotube fiber electrodeformation experiment table and experiment method Download PDFInfo
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- CN111257384A CN111257384A CN202010154686.5A CN202010154686A CN111257384A CN 111257384 A CN111257384 A CN 111257384A CN 202010154686 A CN202010154686 A CN 202010154686A CN 111257384 A CN111257384 A CN 111257384A
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Abstract
The invention discloses a carbon nanotube fiber electrodeformation experiment table and a related experiment method, and belongs to the technical field of electrochemical actuation performance tests. Mainly comprises a beaker clamping device, an electrode clamping device, a displacement measuring device, a power supply and the like. The method comprises the steps of placing a beaker containing ionic liquid on a beaker support, fixing the beaker by a beaker holding device, leading one end of an electrode chuck out by a power supply, holding an Ag/AgCl reference electrode by an anode chuck, holding stable double-spiral-structure carbon nanotube fibers with S-shaped hooks at the tail end by a cathode chuck, fixing the stable double-spiral-structure carbon nanotube fibers by the electrode holding device respectively, and placing a displacement measuring device in the beaker to measure the electrostrictive shrinkage of the fibers 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 being electrolyzed after the electrification, avoid the experiment error caused by bubbles and is beneficial to improving the accuracy of the experimental result of the electrodeformation.
Description
Technical Field
The invention relates to a laboratory table, in particular to a laboratory table used when carbon nano tube fibers are used as electrodes to carry out an electrostrictive experiment when the electrodes are electrified in an electrolyte environment. The invention also relates to a method for carrying out an electrostrictive experiment by using the experiment table, belonging to the technical field of electrochemical actuation performance test.
Background
In recent years, artificial muscles have attracted extensive attention and research due to the advantages of light weight, convenient process, good flexibility and the like. The method has great application potential in the fields of aerospace, underwater equipment, bionic manufacturing, biomedical treatment, energy collection and the like. However, a complete set of experimental apparatus and method for electrostriction is not proposed, because the carbon nanotube fiber has light weight and small size, the axial shrinkage deformation generated when the electrostriction test is performed by electrifying in the electrolyte environment is only millimeter-sized or even micron-sized, the air bubbles generated by the electrolysis of liquid when the electric current is applied, the influence of the surrounding environment during the experiment and the buoyancy of the liquid to the fiber electrode have great influence on the experimental measurement result. Therefore, the device and the method for testing the electrostrictive property of the carbon nanotube fiber have important practical value.
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 and under a certain load.
The invention adopts the technical scheme 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 and is fixed with the gear, so that the purpose of rotating the handle to drive the chain to drive a beaker chuck to move back and forth is achieved, the beaker chuck is fixed on the chain through a fixing screw, a beaker support is placed at the bottom of the box body, a beaker is placed on the beaker support, a data collecting box and a nonlinear displacement sensor are placed at the bottom of the beaker, the extension degree of the beaker clamp is controlled through a nut on an adjusting connecting rod, the function of fixing the beaker is further achieved, an electrode clamp is fixed on an electrode clamp support through a locking device and an adjusting screw, the position of the electrode clamp and the extension degree of the electrode clamp can be adjusted through the adjusting screw, so that different electrode clamps, Ag/AgCl is added to a positive chuck of the electrode to serve as a reference electrode, carbon nanotube fibers with a stable double-spiral structure are added to a negative chuck, an S-shaped hook is hung at the lower end of each fiber, and the other end of the electrode chuck is connected with a power supply.
The method for carrying out the fiber electrodeformation experiment by using the carbon nanotube fiber electrodeformation experiment table comprises the following operation steps:
a. twisting the carbon nanotube fiber to obtain the stable double-helix carbon nanotube fiber.
b. The electrode chuck is led out by a power supply and is fixed on the electrode chuck.
c. Ag/AgCl is added to the positive chuck as a reference electrode, one end of the fiber is bound with a weight, and the other end of the fiber is clamped by the negative chuck.
d. The displacement sensor and the data collection box are fixed well at the bottom of the beaker, and the electrolyte solution is prepared in the beaker.
e. The beaker is placed on a beaker support and fixed by a beaker clamp.
f. By adjusting the positions of the beaker holding device and the electrode holding device, more than 80% of the fiber is immersed in the electrolyte, so that the contact between a heavy object and the fiber with the wall of the beaker and the sensor in the operation process is avoided.
g. And switching on a power supply, collecting the fiber shrinkage deformation amount into an electric signal through a displacement sensor, converting the electric signal into a displacement signal through a data collection box, and finally obtaining the shrinkage deformation of the carbon nano tube fiber.
The carbon nanotube fiber electrodeformation experiment table and the experiment method can test the electrical actuation performance of the fiber under the conditions of reducing liquid buoyancy as much as possible and preventing the electrolysis of electrolyte solution, fully fix the beaker and the electrode chuck and reduce the error caused by the external environment to the experiment under a relatively closed environment, so that the experiment result is more accurate. Meanwhile, the artificial muscle designed by utilizing the fiber actuating performance has wide application prospect and can play a reference role in the design of the structure of the artificial muscle.
Drawings
FIG. 1 is a structural diagram of a carbon nanotube fiber electrodeformation experimental bench.
FIG. 2 is an enlarged view of a portion of the beaker holding apparatus.
FIG. 3 is an enlarged view of a portion of the electrode holder clamping apparatus.
Fig. 4 is an enlarged view of a portion of the S-shaped hook.
Detailed Description
The following describes in detail the carbon nanotube fiber electrostrictive test platform and the method for performing the carbon nanotube fiber electrostrictive test using the same according to the present invention with reference to fig. 1, 2, 3, and 4.
Fig. 1 shows a structure diagram of a carbon nanotube fiber electrostriction test platform, which mainly comprises the following components: the electrode clamp comprises a gear (1), a box body (2), a slide way (3), a chain (4), a gear shaft (5), a handle (6), an electrode clamp chuck support (7), a locking mechanism (8), a fixing screw (9), an adjusting screw (10), a nut (11), a beaker chuck (12), a beaker (13), a beaker support (14), a data collection box (15), a displacement sensor (16), an Ag/AgCl reference electrode (17), an S-shaped hook (18), carbon nanotube fibers (19), an electrode clamp chuck (20), a power supply (21) and an 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. Weld slide (3) on box (2), the chain is installed on slide (3), drive gear (1) of connecting through gear shaft (5) through rotatory handle (6), lead to chain (4) to make front and back feed motion, and then drive beaker chuck (12) and make front and back feed motion, the position of adjustment beaker chuck (12), beaker (13) above beaker support (14) are placed to the fixed, beaker chuck (12) are fixed in chain (4) side through set screw (9), the degree of extension of beaker chuck (12) can be adjusted through adjusting screw (10) simultaneously, thereby control adds beaker (13) of holding different models, place in beaker (13) bottom displacement sensor (15) and data collection box (16). The electrode clamping device is fixed on the upper part of the box body (2), the electrode clamp chuck bracket (7) is fixed on the upper part of the box body (2) by a fixing screw (9), the electrode clamp chuck (20) is fixed on the electrode clamp chuck bracket (7) by the fixing screw (9) and a locking mechanism (8) through the matching of a threaded hole, meanwhile, the electrode clamp (20) can move up and down along the electrode clamp support (7), to find the best experimental position, the electrode clamp chuck (20) is similar to the beaker chuck (12), the extension degree of the electrode clamp chuck (20) can be adjusted through the adjusting screw (10), thereby holding different electrode chucks (22), the positive electrode chuck of the electrode holds an S-shaped hook (18), the negative electrode chuck holds a carbon nano tube fiber (19) with a stable double-spiral structure, 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 comprises the following specific steps: fixing one end of the carbon nano tube fiber, twisting the other end of the carbon nano tube fiber by a motor, folding the fiber from the middle after twisting for a certain number of turns, and twisting reversely for a certain number of turns to obtain the stable double-spiral carbon nano tube fiber. An electrode chuck is led out from a power supply, an Ag/AgCl reference electrode is added to the positive chuck of the electrode, carbon nanotube fibers with S-shaped hooks hung at the other end are clamped by the negative chuck of the electrode, and the electrode chuck is fixed on the electrode chuck by adjusting the angle. Preparing an electrolyte solution: adding a medicine for providing ions into an organic solvent, namely anhydrous propylene carbonate, preparing an 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, then placing the beaker on a beaker support, and fixing the beaker on the beaker support by rotating a handle and an adjusting screw. Adjusting the electrode clamp chuck support according to the position of the beaker, vertically immersing more than 80% of fibers of a suspended weight in water, switching on a power supply (about 3V), collecting the shrinkage deformation of the fibers into electric signals through a displacement sensor, converting the electric signals into displacement signals through a data collection box, and finally obtaining the shrinkage deformation of the fibers.
Claims (8)
1. A carbon nanotube fiber electrodeformation experiment table is characterized in that: the device comprises a beaker holding device, an electrode holding device, a displacement measuring device and a power supply, wherein the beaker holding device, the electrode holding device, the displacement measuring device and the power supply are respectively arranged on a box body; twisting the carbon nanotube fiber to obtain the stable double-helix carbon nanotube fiber; leading out an electrode chuck from a power supply, holding Ag/AgCl as a reference electrode on a positive chuck, binding one end of the carbon nano tube fiber with a heavy object, clamping the other end of the carbon nano tube fiber by a negative chuck, and fixing the electrode chuck on the electrode chuck; placing the data collection box and the displacement sensor at the bottom of a beaker for fixation, simultaneously preparing an electrolyte solution in the beaker, placing the beaker on a beaker support, and fixing the beaker by using a beaker chuck; by adjusting the positions of the beaker holding device and the electrode holding device, most of the carbon nanotube fibers are immersed in the electrolyte, so that the heavy objects and the fibers are prevented from contacting with sensors on the wall and the bottom of the beaker; and switching on a power supply, collecting the fiber shrinkage deformation amount into an electric signal through a displacement sensor, converting the electric signal into a displacement signal through a data collection box, and finally obtaining the shrinkage deformation amount of the carbon nano tube fiber.
2. The carbon nanotube fiber electrostrictive test stand of claim 1, wherein: beaker adds holds device and passes through slide (3) welding on box (2), install on slide (3) chain (4), drive gear (1) of connecting through gear shaft (5) through rotatory handle (6), lead to chain (4) to make front and back feed motion, and then drive beaker chuck (12) and make front and back feed motion, adjust the position of beaker chuck (12), fixed beaker (13) of placing above beaker support (14), beaker chuck (12) are fixed in chain (4) side through set screw (9), the extension degree of beaker chuck (12) can be adjusted through adjusting screw (10) simultaneously, thereby control adds beaker (13) of holding different models.
3. The carbon nanotube fiber electrostrictive test stand of claim 1, wherein: the electrode clamping device is fixed on the upper portion of the box body (2), the electrode clamp chuck support (7) is fixed on the upper portion of the box body (2) through the fixing screw (9), the electrode clamp chuck (20) is fixed on the electrode clamp chuck support (7) through the matching of the fixing screw (9) and the locking mechanism (8) through the threaded hole, meanwhile, the electrode clamp chuck (20) can move up and down along the electrode clamp chuck support (7) to find an experimental position, the electrode clamp chuck (20) is similar to the beaker chuck (12), the extension degree of the electrode chuck (22) is adjusted through the adjusting screw (10), and therefore different electrode chucks (22) are clamped.
4. The carbon nanotube fiber electrostrictive test stand of claim 1, wherein: the displacement measuring device consists of a nonlinear displacement sensor and a data collecting box.
5. An experimental method for carbon nanotube fiber electrodeformation is characterized in that: fixing one end of the fiber, twisting the other end of the fiber by using a motor, folding the fiber from the middle after twisting, and twisting reversely to obtain the double-spiral-structure carbon nanotube fiber;
the specific implementation steps are as follows, twisting the carbon nanotube fiber to obtain the carbon nanotube fiber with the double-spiral structure;
a. leading out the electrode chuck by a power supply, and fixing the electrode chuck on the electrode chuck;
b. Ag/AgCl is added to the positive chuck to serve as a reference electrode, one end of the fiber is bound with a weight, and the other end of the fiber is clamped by the negative chuck;
c. fixing the displacement sensor and the data collection box at the bottom of the beaker, and simultaneously preparing an electrolyte solution in the beaker;
d. placing the beaker on a beaker support, and fixing the beaker by a beaker clamping head;
e. by adjusting the positions of the beaker holding device and the electrode holding device, more than 80% of the fibers are immersed in the electrolyte, so that the contact between a heavy object and the fibers with the wall of the beaker and a sensor in the operation process is avoided;
f. and switching on a power supply, collecting the fiber shrinkage deformation amount into an electric signal through a displacement sensor, converting the electric signal into a displacement signal through a data collection box, and finally obtaining the shrinkage deformation of the carbon nano tube fiber.
6. The carbon nanotube fiber electrostrictive test method according to claim 5, wherein: the solvent of the electrolyte solution is propylene carbonate.
7. The carbon nanotube fiber electrostrictive test method according to claim 5, wherein: the beaker is fixed and held by an adjusting screw and a handle, the electrode clamp is fixed by the adjusting screw and the fiber is controlled to be immersed in the electrolyte solution by 80 percent.
8. The carbon nanotube fiber electrostrictive test method according to claim 5, wherein: the weight hung at one end of the fiber is a stainless steel S-shaped hook.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112376143A (en) * | 2020-10-23 | 2021-02-19 | 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN112376143A (en) * | 2020-10-23 | 2021-02-19 | 复旦大学 | Implantable ligament substitute material based on oriented carbon nanotube fibers and preparation 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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