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Anisotropic dielectric elastomer fiber driver and preparation method thereof

A dielectric elastomer, anisotropic technology, applied in the field of automation, can solve the problems of single deformation mode, single degree of freedom, unfavorable practical application, etc., and achieve the effect of large driving deformation, good compatibility and adhesion

Active Publication Date: 2021-08-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Moreover, the drivers reported are planar configuration drivers that produce bidirectional drives instead of fiber-shaped drivers that realize linear drives, which is not conducive to practical application; and the deformation mode Single, can only achieve single-degree-of-freedom movement; the driving voltage is also above kilovolts

Method used

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  • Anisotropic dielectric elastomer fiber driver and preparation method thereof
  • Anisotropic dielectric elastomer fiber driver and preparation method thereof
  • Anisotropic dielectric elastomer fiber driver and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: Preparation and properties of polystyrene-b-poly(n-butyl acrylate)-b-polystyrene triblock copolymer (SBAS) dielectric elastomer anisotropic film

[0044] The first step: completely dissolve 1 mass part of SBAS triblock copolymer (molecular weight: 1.5W-12W-1.5W) in 5 mass parts of THF;

[0045] Step 2: Place the scraper on the non-stick polyester film substrate, and apply the above THF solution between the scraper and the substrate, and the scraper drives the solution to move relative to the substrate at a speed of 1mm / s, so that a layer is evenly deposited on the substrate Wet film, placed for 1 hour to evaporate the solvent, then form a dry film, then continue to dry for 12 hours under vacuum at 120°C to obtain the initial film of SBAS triblock copolymer dielectric elastomer;

[0046] The third step: uniaxially stretch the initial film of the above-mentioned SBAS triblock copolymer dielectric elastomer, take a film with a length of 1, fix one end, stretch t...

Embodiment 2

[0050] The first step: completely dissolve 1 mass part of SBAS triblock copolymer (molecular weight: 1.5W-12W-1.5W) in 5 mass parts of THF;

[0051] Step 2: Place the scraper on the non-stick polyester film substrate, and apply the above THF solution between the scraper and the substrate, and the scraper drives the solution to move relative to the substrate at a speed of 2mm / s, so that a layer is evenly deposited on the substrate Wet film, placed for 2 hours to evaporate the solvent to form a dry film, and then dried under vacuum at 120°C for 12 hours to obtain the initial film of SBAS triblock copolymer dielectric elastomer;

[0052] The third step: uniaxially stretch the initial film of the above-mentioned SBAS triblock copolymer dielectric elastomer, take a film with a length of 1, fix one end, stretch the other end along the length direction until the film length is 4, and then The other end was fixed, and the stretched film was placed in an oven at 120°C for heat treatmen...

Embodiment 3

[0059] The first step: completely dissolve 2 mass parts of SBAS triblock copolymer (molecular weight: 1.5W-12W-1.5W) in 10 mass parts of tetrahydrofuran;

[0060] Step 2: Place the scraper on the non-stick polyester film substrate, and apply the above THF solution between the scraper and the substrate, and the scraper drives the solution to move relative to the substrate at a speed of 2mm / s, so that a layer is evenly deposited on the substrate Wet film, placed for 0.5h to evaporate the solvent to form a dry film, and then dried under vacuum at 120°C for 12h to obtain the initial film of SBAS triblock copolymer dielectric elastomer;

[0061] Step 3: Add 5 mg of carbon nanotubes and 0.9 g of sodium lauryl sulfate into 90 g of deionized water, ultrasonicate for 4 hours, then centrifuge at a speed of 5000 r / min for 10 min with a centrifuge, take the supernatant, and pump The carbon nanotube electrode was obtained by filtration.

[0062] Step 4: Cut the SBAS triblock copolymer die...

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Abstract

The invention discloses an anisotropic dielectric elastomer fiber driver and a preparation method thereof. The driver is composed of one or more sub-fibrous driver wall surfaces which are attached to each other. Each sub-fibrous driver comprises at least two anisotropic dielectric elastomer layers and at least two flexible electrode layers, and the anisotropic dielectric elastomer layers and the flexible electrode layers are overlapped in a staggered mode and wound into a fibrous structure. According to the method, an anisotropic dielectric elastomer film with reduced thickness and microstructure orientation is prepared through a mechanical strain induction method based on a physically-crosslinked block copolymer thermoplastic elastomer, and a light and fully-flexible dielectric elastomer fiber driver outputting linear displacement in the axial direction is prepared in a laminated winding mode. Driving deformation can be output in a directional mode, the driving performance is greatly improved, meanwhile, low-pressure driving is achieved, fiber bundles are assembled, and multiple motion modes of stretching, bending and rotating are generated.

Description

technical field [0001] The invention relates to the field of automation, in particular to an anisotropic dielectric elastomer fiber driver and a preparation method thereof. Background technique [0002] With the development of industrial automation, the importance of robots has become increasingly prominent, and accordingly, human demand for robot technology has continued to increase. Traditional robots are usually composed of rigid components such as motors, pistons, joints, and hinges. Although they have sufficient power and high power, they also have many shortcomings, such as bulky structure, low safety factor, poor environmental adaptability, and high noise. [0003] Soft robots driven by smart materials can withstand large deformation and have a high degree of freedom. They can change their shape and size arbitrarily according to actual needs. They have excellent flexibility and strong environmental adaptability. They are widely used in industrial production, medical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/08B32B33/00B32B37/00H02N2/00
CPCB32B27/36B32B27/08B32B33/00B32B37/00H02N2/00H02N2/22B32B2037/243B32B2255/10B32B2255/26B32B2307/754
Inventor 何金罗英武肖友华
Owner ZHEJIANG UNIV
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