A dielectric elastomer driver capable of driving at low voltage, its preparation method, and transducer

A dielectric elastomer and driver technology, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problems of inability to drive and achieve fast response and high elasticity Recovery effect

Active Publication Date: 2020-06-05
JONES TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the above methods can improve the effect, it is impossible to reduce the driving voltage to ≤100V to drive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0075] The present invention provides a method for preparing a dielectric elastomer actuator according to any one of the above technical solutions, comprising the following steps:

[0076] 1) Compounding one of the elastomer material source or the electrode material source on the surface of the sacrificial layer of the substrate provided with the sacrificial layer to obtain a first matrix compounded with one of the elastomer layer or the electrode layer;

[0077] 2) Compounding another one of the electrode material source or the elastomer material source with the elastomer layer or the surface of the electrode layer of the first matrix obtained in the above steps to obtain a second matrix;

[0078] 3) After removing the sacrificial layer from the second matrix obtained in the above steps, a colloidal film without the matrix is ​​obtained;

[0079] 4) After the second electrode layer is compounded on the surface of the elastic body layer of the colloidal film obtained in the abov...

Embodiment 1

[0110] 2μm silica gel layer + 1μm electrode layer

[0111] Step 1: Prepare a silica gel coating solution, wherein the silica gel is a product with a modulus of 1 MPa and a viscosity of 60,000 cp, the diluent is volatile silicone oil with a viscosity of 1 cp, and a solid content of silica gel of 33%. Coating on a PET substrate coated with a sacrificial layer, the bar coating distance is 15 μm, and after drying at 100° C. for 30 minutes, the thickness of the dry silica gel film is 2 μm.

[0112] Step 2: preparing an electrode coating solution, wherein the superconducting carbon black powder has a solid content of 2%, the binder is silica gel with a solid content of 20%, and the diluent is volatile silicone oil with a solid content of 78%. Printed on the surface of the silica gel membrane by micro-gravure printing, after drying at 100°C for 30 minutes, the thickness of the electrode layer is 1 μm. Complete the printing of a single layer of 1μm thick electrodes on the 2μm silicon...

Embodiment 2

[0117] 2μm silica gel layer + 1μm electrode layer

[0118] Step 1: Prepare a silica gel coating solution, wherein the silica gel is a product with a modulus of 1 MPa, a compression set of <5%, and a viscosity of 1000 cp, the diluent is volatile silicone oil, the viscosity is 1 cp, and the solid content of the silica gel is 20%. Slit coating on the PET substrate coated with a sacrificial layer, the speed is 20m / min, the thickness of the wet adhesive film is 10μm, and the thickness of the dry silica gel film is 2μm after drying in the oven at 120°C for 30min.

[0119] Step 2: Prepare electrode coating solution, wherein the total solid content of superconducting carbon black powder, graphene powder, and carbon nanotube powder is 2%, the binder is silica gel with a solid content of 10%, and the diluent is volatile silicone oil with a solid content of 88% . Formed on the surface of the silica gel membrane by spin coating, after drying at 100°C for 30 minutes, the thickness of the ...

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Abstract

A dielectric elastomer actuator, having a multi-layer structure. The multi-layer structure comprises single elastomer layers and single electrode layers composited on upper and lower surfaces of the single elastomer layer, or multiple layers formed by alternately stacking single elastomer layers and single electrode layers. The thickness of the single electrode layer is 1 μm, and the thickness of the single elastomer layer is less than or equal to 5 μm. The thickness of the dielectric elastomer is reduced to the ultra-thin nanometer scale, and the effects of driving at low voltage and realizing large deformation, rapid response and high elastic recovery can be implemented by controlling the thicknesses of the electrode layer and the electrode layer of the dielectric elastomer actuator, and combining parameters such as appropriate modulus, sheet resistance, and relative dielectric constant and selection of materials.

Description

technical field [0001] The invention belongs to the technical field of dielectric elastomer drivers, and relates to a dielectric elastomer driver, a preparation method thereof, and a transducer, in particular to a low-voltage-driven dielectric elastomer driver, a preparation method thereof, and a transducer . Background technique [0002] Electroactive polymers (EAP) refer to polymer materials that can produce large deformations under electrical stimulation. EAP materials can be divided into two types: self-supporting and electronic. Electronic EAPs can be further divided into electrostrictive elastomers, ferroelectric polymers and dielectric elastomers (dielectric elastomer, DE). Among them, the dielectric elastomer refers to an elastic material with a high dielectric constant, which can change its shape after an external electric field is applied to it, and can return to its original shape after the external electric field is removed. This process, accompanied by the ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/00
CPCH02N2/001H02N2/22
Inventor 韩杨吴晓宁周占玉
Owner JONES TECH
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