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Electrostrictive spiral artificial muscle and preparation and application thereof

A technology of artificial muscle and electroconstriction, which is applied in the field of bionic materials and its preparation and application, can solve the problems of loss of dielectric elastomer driving performance, large volume and weight, high circuit voltage, etc., and achieves a simple and fast preparation method. The effect of high tensile strength and light weight

Active Publication Date: 2021-01-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing artificial muscles generally have pneumatic artificial muscles, the principle of which is to change the pressure inside the cavity to make the artificial muscles contract or expand to drive the corresponding moving parts; the disadvantage is that external pneumatic equipment is required, and the volume and weight are relatively large , not easy to carry
Its disadvantages are: the circuit voltage is very high, and the safety faces great challenges; the relationship between the spring and the dielectric elastomer is mutual resistance, which will damage the driving performance of the dielectric elastomer
[0004] CN102044627A discloses an electrostrictive composite material and an electrostrictive element. The shape of the element is a sheet, and the actuation method is bending, which limits the application in the field of artificial muscles or actuators

Method used

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  • Electrostrictive spiral artificial muscle and preparation and application thereof
  • Electrostrictive spiral artificial muscle and preparation and application thereof
  • Electrostrictive spiral artificial muscle and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050]Select the carbon nanotube film, first cut it into strips with a size of 20×300mm, and then fold it in half along the axial direction to wrap the nylon wire with a total length of 500mm. The thickness of the carbon nanotube film is the same, so that the whole spiral artificial muscle is relatively uniform;

[0051] The two ends of the nylon thread wrapped by the carbon nanotube film are respectively fixed on the two ends of the yarn twist meter, one end of the twist meter is a rotating chuck, and the other end is a chuck with a controllable position;

[0052] Manually control the speed, rotation direction and switch of the yarn twist meter, reduce or avoid knotting by changing the twisting speed, remove knots by reverse twisting or increasing the tension at the fixed end, and ensure that the artificial muscle gradually forms a spiral structure;

[0053] Fix the two ends of the twisted helical artificial muscle, heat it in an oven at 100°C for 1 hour, and then take it out...

Embodiment 2

[0059] The manufacturing steps are similar to those of Example 1. Compared with Example 1, the difference lies in the way that the carbon nanotube film wraps the nylon wire in a different way. The nylon wire is placed on the edge of one long side of the carbon nanotube film and wound along the short side. Then fix the overlapping ends of the carbon nanotube film and the nylon thread on the clamps at both ends of the yarn twister, and manually control the twisting to form a spiral artificial muscle. Compared with the example: because the carbon nanotube film is relatively soft, light and thin, and the diameter of the nylon wire is relatively small, it has caused great difficulties for the winding of the carbon nanotube film, and the carbon nanotube film is difficult to be evenly wound on the nylon wire. The above problems lead to knotting in the uneven coating of the carbon nanotube film during the twisting process, and the overall radial size of the spiral artificial muscle af...

Embodiment 3

[0061] The manufacturing steps are similar to Example 1. Compared with Example 1, the difference is that the nylon thread is replaced by TPU elastic thread. The carbon nanotube film is folded in half along the long side and wrapped on the TPU elastic thread, and then the two ends of the carbon nanotube film and the TPU elastic thread are fixed on the clamps at both ends of the yarn twist meter, and the twisting is manually controlled to form a spiral artificial muscle. Compared with Example 1, the selected TPU elastic thread material is relatively softer than nylon thread and has a lower fusing temperature. As a result of the above problems, the driving effect of the helical artificial muscle is good under a light load, but the driving effect becomes poor when the load increases. Since the temperature that the TPU elastic thread can withstand is lower than that of the nylon thread in Example 1, the temperature of the carbon nanotube film will rise rapidly when the external ci...

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Abstract

The invention relates to an electrostrictive spiral artificial muscle and preparation and application thereof, the electrostrictive spiral artificial muscle is composed of a sheath core structure, a sheath layer is composed of a carbon nanotube film, and a core material is a nylon wire. When the spiral artificial muscle is actually used, the spiral artificial muscle can be designed into differentlengths according to requirements. Voltages of different magnitudes can be output through the control circuit, so that the contraction rate and the output stress of the spiral artificial muscle are controlled. Electric energy is converted into mechanical energy in a flexible mode, and the artificial muscle is easy to control, safe and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of bionic materials and their preparation and application, in particular to an electro-constrictive spiral artificial muscle and its preparation and application. Background technique [0002] In recent years, artificial muscles with high flexibility and elasticity have been applied in advanced fields such as medical rehabilitation equipment and bionic robots. The existing artificial muscles generally have pneumatic artificial muscles, the principle of which is to change the pressure inside the cavity to make the artificial muscles contract or expand to drive the corresponding moving parts; the disadvantage is that external pneumatic equipment is required, and the volume and weight are relatively large , not easy to carry. The principle of dielectric elastomer artificial muscles is that when an electric field is applied, the elastic charges are squeezed or repelled to produce deformation; the disadvantage is that a ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/09H01L41/18H10N30/20H10N30/85
CPCH10N30/20H10N30/85Y02P70/62
Inventor 李耀刚张令坤王宏志侯成义张青红
Owner DONGHUA UNIV
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