Electrochemically-driven artificial muscle fiber as well as preparation method and application thereof

An artificial muscle, electrochemical technology, applied in the field of material science, to achieve the effect of increasing specific surface area, improving energy density and driving stroke

Active Publication Date: 2020-10-27
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide an electrochemically driven artificial muscle fiber with targeted adjustment and its preparation method and application. Through the structural design, the artificial muscle fiber with large driving stroke, high energy density and high efficiency can be realized, and then overcome the existing problems. There are deficiencies in technology

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  • Electrochemically-driven artificial muscle fiber as well as preparation method and application thereof
  • Electrochemically-driven artificial muscle fiber as well as preparation method and application thereof
  • Electrochemically-driven artificial muscle fiber as well as preparation method and application thereof

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preparation example Construction

[0057] The embodiment of the present invention also provides a preparation method of electrochemically driven artificial muscle fibers, which includes:

[0058] The carbon nanotube narrow band is prepared by a floating chemical vapor deposition method;

[0059] At least a plurality of carbon nanotube narrow strips are pre-crimped, plied, and twisted in sequence to form a uniform helical structure to form a muscle yarn, or at least the carbon nanotube narrow strips are twisted until a uniform helical structure is formed to obtain a muscle yarn The muscle yarn is the electrochemically driven artificial muscle fiber.

[0060] In some more specific embodiments, the preparation method includes: first coiling the narrow strip of carbon nanotubes along the length direction to form pre-crimped carbon nanotube fibers, and then performing multiple pre-crimped carbon nanotube fibers sequentially Muscle yarns are obtained by plying and twisting until a uniform helix is ​​formed.

[0061...

Embodiment 1

[0076] see figure 1 , take a carbon nanotube narrow ribbon with a length of about 20 cm and a width of about 700 μm prepared by a floating catalytic method, and curl it along its length direction to form a pre-crimped carbon nanotube fiber with a diameter of 140 μm.

[0077] Take four identical pre-curled carbon nanotube fibers for plying, and then continue twisting (the twist is 2800 turns / m), until a uniform helical structure is formed, and then four pre-crimped carbon nanotube fibers are obtained. Artificial muscle yarn Threads, i.e. artificial muscle fibers, the length of which is about 6 cm and the diameter is about 125 μm;

[0078] The artificial muscle fiber was used as the working electrode of the electrochemical drive system, activated with nitric acid (1M / L HNO 3 Adopt the CV method to activate the carbon nanotube film after 20 circles) as counter electrode, with Ag / Ag + The electrode was used as a reference electrode, and 0.2M tetraethylammonium tetrafluoroborate ...

Embodiment 2

[0087] see figure 1 , taking a carbon nanotube narrow strip with a length of about 20 cm and a width of about 700 μm prepared by a floating catalytic method, and curling it along its length direction to form a pre-crimped carbon nanotube fiber with a diameter of 140 μm;

[0088] Take four identical pre-curled carbon nanotube fibers and continue twisting (the twist is about 2800 turns / meter) until a uniform helical structure is formed, and then four pre-crimped carbon nanotube fibers are obtained. That is, artificial muscle fibers, the length of which is about 6cm and the diameter is about 125μm;

[0089] The artificial muscle fiber was used as the working electrode of the electrochemical drive system, activated with nitric acid (1M / L HNO 3 Adopt the CV method to activate the carbon nanotube film after 20 circles) as counter electrode, with Ag / Ag + The electrode was used as a reference electrode, and 0.2M tetraethylammonium tetrafluoroborate (TEA·BF 4 ) was dissolved in prop...

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Abstract

The invention discloses an electrochemically-driven artificial muscle fiber as well as a preparation method and application thereof. The electrochemically-driven artificial muscle fiber comprises at least one strand of muscle yarn, wherein the muscle yarn is at least obtained by sequentially pre-crimping, stranding and twisting a plurality of carbon nanotube narrow bands until a uniform spiral structure is formed, or the muscle yarn is at least obtained by twisting a single carbon nanotube narrow band until the uniform spiral structure is formed. According to the preparation method of the electrochemically-driven artificial muscle fiber, the plurality of carbon nanotube narrow bands are pre-crimped, stranded and twisted to obtain the muscle yarn, or the carbon nanotube narrow bands are directly twisted to obtain the muscle yarn; the obtained muscle yarn has a spiral or threaded structure, so that the specific surface area of the carbon nanotube narrow bands is increased; a large numberof micro-nano pore passages are introduced into the artificial muscle fiber, and the energy density and the driving stroke of the artificial muscle fiber are improved in a bunching or stranding mode.

Description

technical field [0001] The invention relates to a preparation method of artificial muscle fibers, in particular to an electrochemically driven artificial muscle fiber and its preparation method and application, belonging to the technical field of material science. Background technique [0002] Natural organisms use muscle fibers as the power plant to achieve the effect of drive. Artificial Muscle is a new type of intelligent driving material that can produce reversible stretching and rotating motions under external stimuli (light, electricity, heat, solvents, magnetism, etc.). Robots and other aspects have important application prospects. How to simulate biological muscles and prepare artificial muscle fibers is a hot topic recently devoted to research by scientists. The research and development of high-performance artificial muscle fibers will greatly promote the design of small, strong and flexible robots and prosthetics, and can be applied in the field of biomedicine. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/28D02G3/16D02G3/44
CPCD02G3/28D02G3/44D02G3/16D10B2101/122
Inventor 邸江涛王玉莲李清文
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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