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Double-layer film actuator and preparation method thereof

A double-layer film and actuator technology, applied in coatings, instruments, electrical solid devices, etc., can solve the problems of inability to realize large-area preparation, inability to directional growth of transition metal oxides, and limited ultra-thin flexible metal substrate manufacturing process and cost issues

Pending Publication Date: 2021-03-19
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation method is limited by the manufacturing process and cost of ultra-thin flexible metal substrates, and cannot achieve large-area preparation. After replacing with non-metallic substrates, the electrodeposition method cannot be used to achieve directional growth of transition metal oxides.

Method used

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  • Double-layer film actuator and preparation method thereof
  • Double-layer film actuator and preparation method thereof
  • Double-layer film actuator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Disperse commercial magnesium oxide nanoparticles in anhydrous ethanol solvent, and ultrasonically disperse to obtain a 20 mg / mL suspension.

[0028] (2) Scrape-coat the suspension solution prepared in step (1) on the surface of the polystyrene film substrate, and the coating amount is 0.05mg / cm 2 , and then dried at 60 degrees Celsius.

[0029] (3) Immerse the composite film prepared in step (2) in solutions with a metal ion concentration of 0.05M and different molar ratios (see Table 1), and the reaction time at room temperature is 1 hour.

[0030] (4) Take out the film in step (3), wash and dry to obtain the target double-layer film, and adopt infrared light irradiation to control the change of environmental humidity, and observe the actuation of the target film.

[0031] Table 1

[0032]

[0033] pass figure 1 The digital photo can clearly see that the area is 5*13cm 2 A brown-yellow substance uniformly grew on the surface of the polystyrene film.

[003...

Embodiment 2

[0038] (1) Disperse commercial magnesium oxide nanoparticles in anhydrous ethanol solvent, and ultrasonically disperse to obtain a 20 mg / mL suspension.

[0039] (2) Scrape-coat the suspension solution prepared in step (1) on the surface of the polystyrene film substrate, and the coating amount is 0.05mg / cm 2 , and then dried at 60 degrees Celsius.

[0040] (3) Immerse the composite film prepared in step (2) in a zinc acetate solution, the metal ion concentration is 0.05M, and the reaction time at room temperature is 1 hour.

[0041] (4) Take out the film in step (3), wash and dry to obtain the target double-layer film, and adopt infrared light irradiation to control the change of environmental humidity, and observe the actuation of the target film.

[0042] Depend on Figure 5 It can be seen that under this growth condition, the bilayer film has the ability to deform under the action of infrared light.

Embodiment 3

[0044] (1) Disperse commercial magnesium oxide nanoparticles in anhydrous ethanol solvent, and ultrasonically disperse to obtain a 5 mg / mL suspension.

[0045] (2) The suspension solution prepared in step (1) is loaded on the surface of the polystyrene microporous film substrate by vacuum filtration, and the coating amount is 0.05 mg / cm2 , and then dried at 60 degrees Celsius.

[0046] (3) Immerse the composite film prepared in step (2) in nickel nitrate solution, the metal ion concentration is 0.05M, and the reaction time at room temperature is 1 hour.

[0047] (4) Take out the film in step (3), wash and dry to obtain the target double-layer film, and adopt infrared light irradiation to control the change of environmental humidity, and observe the actuation of the target film.

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Abstract

The invention discloses a double-layer film actuator and a preparation method thereof, and belongs to the field of functional materials and soft robots. A layer of regularly arranged metal hydroxide directionally grows on a polymer film substrate through a solid-state alkali self-sacrificing method to form a double-layer structure comprising a polymer film and transition metal hydroxide. The preparation method is simple and low in cost, and large-scale preparation can be realized. Rapid, remarkable and stable deformation capacity is achieved under the conditions of humidity change, heating, infrared light and the like by means of the difference of humidity response of the double-layer thin film, and moving and object grabbing can be achieved through deformation control. Therefore, the method has important application value in the fields of flexible switches, artificial muscles, soft robots, environmental monitoring and the like.

Description

technical field [0001] The invention belongs to the technical field of functional materials and soft robot applications, and in particular relates to a double-layer film actuator and a preparation method thereof. Background technique [0002] Soft robot is a new type of soft robot, and its driving method mainly depends on the deformation of the smart materials used under the stimulation of electric field, pressure, magnetic field, chemical reaction, light, temperature, humidity and so on. As an effective smart material, the double-layer thin-film actuator is characterized by a double-layer structure, relying on the different deformations of the two materials when stimulated to complete actions such as movement and grasping. The research difficulty lies in the selection of sensitive materials and the design of double-layer structure. [0003] Due to the layered structure of hydrotalcite, transition metal hydroxides are highly sensitive to humidity, so the migration and migra...

Claims

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Application Information

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IPC IPC(8): B81B7/00B81C1/00
CPCB81B7/0009B81C1/00134B81B2201/03
Inventor 郑宗敏杨震李征宋兆海戴作强张洪信何田
Owner QINGDAO UNIV
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