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Flexible clutch based on electrostatic adsorption and preparation method thereof

A flexible clutch and electrostatic adsorption technology, applied in the field of flexible clutches, can solve problems such as low dielectric constant of dielectric materials, increased device risk, and inability to obtain force density, achieving good mechanical properties, high force density, and high relative The effect of dielectric constant

Pending Publication Date: 2022-01-25
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the dielectric constants of these dielectric materials are not high, and the ideal force density cannot be obtained at lower voltages, and the use of high voltages increases the risk of the device

Method used

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  • Flexible clutch based on electrostatic adsorption and preparation method thereof
  • Flexible clutch based on electrostatic adsorption and preparation method thereof
  • Flexible clutch based on electrostatic adsorption and preparation method thereof

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preparation example Construction

[0041] Based on the problems existing in the prior art, such as figure 1 As shown in, the present embodiment provides a method for preparing a flexible clutch based on electrostatic adsorption, comprising steps:

[0042] S100. Take the MXene-DMF solution in the reactor, and add polymer into the reactor to obtain a composite solution.

[0043] Specifically, MXene-DMF solution can be obtained directly from the market, or can be obtained by mixing MXene powder with DMF solution. For example, Beijing Beike Nano New Material Co., Ltd. can provide a concentration of 3mg mL -1 MXene-DMF solution.

[0044] In an implementation of this embodiment, the concentration is 3mg mL -1 The MXene-DMF solution is placed in the reaction kettle, and the polymer is added into the reaction kettle, and treated with ultrasonic vibration to obtain a composite solution.

[0045] S200, coating the composite solution on the electrode layer, and drying to form an MXene / polymer dielectric film.

[0046]...

Embodiment 1

[0087] 1. Preparation of dielectric film:

[0088] Mix polyvinylidene fluoride-trifluoroethylene-trifluoroethylene (P(VDF-TrFE-CTFE)) powder with solvent N,N-dimethylformamide (DMF) at a ratio of 1g:7mL, and wait until P( After VDF-TrFE-CTFE) is completely dissolved, the solution is coated on the electrode layer with a coating thickness of 40 μm, and heated at 100° C. for 1 h until the DMF is completely volatilized to form a P(VDF-TrFE-CTFE) dielectric film. Such as Figure 5 shown.

[0089] A small piece of P (VDF-TrFE-CTFE) dielectric film is torn from the electrode layer for relative permittivity and breakdown field strength measurement, the results are as follows figure 1 and as in 2, as in figure 1 As shown, the dielectric constant of the dielectric film formed entirely of P(VDF-TrFE-CTFE) is about 43 at room temperature, and it increases slightly with the increase of temperature. Such as figure 2 As shown, the higher the temperature, the breakdown field strength of...

Embodiment 2

[0097] 1. Preparation of dielectric film:

[0098] Take an appropriate amount of MXene-DMF solution in the reaction kettle, add P(VDF-TrFE-CTFE) to the MXene-DMF solution, and use ultrasonic oscillation for 2 hours to assist the dispersion of nanosheets, and obtain a composite solution after the mixture is completely mixed uniformly. The mass accounts for 0.5% of the total mass of MXene and P(VDF-TrFE-CTFE).

[0099] The composite solution was coated on the electrode layer with a coating thickness of 40 μm, and heated at 100 °C for 1 h until the DMF was completely volatilized to form a MXene / P (VDF-TrFE-CTFE) dielectric film. figure 1 and figure 2 As shown, at 100°C, the relative permittivity of the MXene / P(VDF-TrFE-CTFE) dielectric film reaches 1254, and the breakdown field strength is the same as that of the P(VDF-TrFE-CTFE) dielectric film under the same conditions Almost identical.

[0100] 2. Preparation of flexible clutch:

[0101] Such as Figure 6 As shown, with ...

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Abstract

The invention discloses a flexible clutch based on electrostatic adsorption and a preparation method thereof. The preparation method comprises the steps: taking an MXene-DMF solution, putting into a reaction kettle, and adding a polymer into the reaction kettle to obtain a composite solution; and coating an electrode layer with the composite solution, and drying to form the MXene / polymer dielectric film. According to the preparation method, the MXene / polymer dielectric film formed by the MXene-DMF solution and the polymer has relatively high relative dielectric constant and breakdown field strength, and the flexible clutch prepared by the preparation method is good in mechanical property and high in force density.

Description

technical field [0001] The invention relates to the technical field of flexible clutches, in particular to a flexible clutch based on electrostatic adsorption and a preparation method thereof. Background technique [0002] The flexible clutch is a plate capacitor type electrostatic adsorption device. The flexible clutch is usually composed of a positive plate, a dielectric film and a negative plate. When there is a potential difference between the positive and negative plates, electrostatic attraction will occur. [0003] Due to the advantages of simple structure, low energy consumption, controllable force density, and high adaptability, electrostatically adsorbed flexible clutches have been widely used in grippers, wall-climbing robots, artificial muscles, and wearable devices. [0004] Among them, the core of the flexible clutch is a dielectric film, and its parameters such as dielectric constant, breakdown field strength and thickness directly determine the size of the el...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L27/16C08K3/28C08K3/14H01G4/33H01G4/14
CPCC08J5/18H01G4/33H01G4/14C08J2327/16C08K3/28C08K3/14
Inventor 王宏强魏岱岳熊泉王华岑梁轩铨
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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