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Preparation method of optical-actuated composite film, optical-actuated composite film and optical actuator

A composite thin film and light-actuated technology, which is applied in the direction of mechanical power generation mechanisms, mechanical equipment, machines/engines, etc., can solve problems such as restricting the application of actuators, difficult integration, and reduced sensitivity of actuators

Active Publication Date: 2017-09-26
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the interfacial bonding between most double-layer films is physical contact, which is limited by the bonding force between the two materials. The adhesion between double-layer films is often small, and it is difficult to achieve a tight bond, which seriously restricts the Actuator Practical Applications
Adding an adhesive between the double-layer films can solve the problem of adhesion to a certain extent, but it will bring a significant reduction in the sensitivity of the actuator.

Method used

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  • Preparation method of optical-actuated composite film, optical-actuated composite film and optical actuator
  • Preparation method of optical-actuated composite film, optical-actuated composite film and optical actuator
  • Preparation method of optical-actuated composite film, optical-actuated composite film and optical actuator

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preparation example Construction

[0035] The invention provides a method for preparing a light-activated composite thin film. Double layers of the prepared light-activated composite thin film are closely connected through chemical bonds, and have high mechanical strength and light-activated response speed. In other words, the present invention provides a flexible light-activated nanocomposite bilayer film structure based on interface optimization. The invention also provides a photoactuator prepared with the composite double-layer film, such as an intelligent driver and the like.

[0036] Photoactivated composite films generally consist of a photothermal layer and a flexible strain layer. The photothermal layer generates heat after absorbing light, so that the flexible strain layer is also heated. When heated, the composite film will bend due to the difference in the coefficients of thermal expansion of the two layers. Its working status can be as follows figure 1 Suggested.

[0037] In one embodiment of t...

Embodiment 1

[0079] The preparation scheme of the miniature flexible and stretchable simple mechanical arm: fully mix the titanium nitride nanoparticles with the graphite oxide solution prepared above according to the mass ratio of 1:2, and ultrasonicate for 2 hours to obtain the first colloid evenly dispersed; place the glass slide on In a mixture of concentrated sulfuric acid and 30% hydrogen peroxide with a volume ratio of 7:3, treat at 80 degrees Celsius for 1 hour, and then rinse with deionized water. The first colloid was coated on the glass slide after the hydrophilic treatment, and baked on a heating plate at 50 degrees Celsius for 10 minutes to obtain a photothermal layer. Then configure PDMS mixed glue as the second colloid. Specifically, mix A and B components of PDMS glue (Dow Corning DC184) purchased in the market evenly in proportion (weight ratio), and carry out 5~20 mmHg vacuum. After degassing for 10 minutes, the second colloid was spin-coated on the above-mentioned photot...

Embodiment 2

[0081] The design scheme of the intelligent light control switch: fully mix the graphene with the above-mentioned prepared graphite oxide solution according to the mass ratio of 1:1, and ultrasonicate for 2 hours to obtain the first colloid evenly dispersed; the slide glass is placed in a volume ratio of 7: 3 in a mixture of concentrated sulfuric acid and 30% hydrogen peroxide, treated at 80°C for 1 hour, and then rinsed with deionized water. The above-mentioned first colloid was coated on the glass slide after hydrophilic treatment, and baked on a heating plate at 50 degrees Celsius for 10 minutes to obtain a photothermal layer. Then configure the PVP colloid as the second colloid, specifically dissolving the commercially purchased PVP in absolute ethanol and ultrasonicating for 2 hours to obtain a uniformly dispersed colloidal solution, and then spin-coat the second colloid on the above-mentioned substrate coated with the photothermal layer , and the rotational speed of the ...

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Abstract

The invention provides a preparation method of an optical-actuated composite film. The preparation method comprises the following steps that graphite oxide and an optical-actuated heating material are dispersed into a first solvent, and a first colloid is obtained; an organic flexible strained-layer material is dispersed into a second solvent, and a second colloid is obtained; the first colloid is coated on a substrate and dried, and an optical-actuated heating film layer is obtained; and the second colloid is coated on the optical-actuated heating film layer and dried, a strain film layer is formed, the strain film layer is bonded with the optical-actuated heating film layer through chemical bonds, the optical-actuated composite film is formed, and then demolding is conducted on the optical-actuated composite film and the substrate. The invention further provides the optical-actuated composite film prepared through the method. The optical-actuated composite film is composed of the optical-actuated heating film layer and the strain film layer, the optical-actuated heating film layer comprises graphite oxide and the optical-actuated heating material, the strain film layer comprises the organic flexible strained-layer material, and graphite oxide and the organic flexible strained-layer material are combined through the chemical bonds. The invention further provides an optical actuator.

Description

technical field [0001] The invention relates to the field of novel intelligent drivers, in particular to a preparation method of a photoactivated composite film, a photoactivated composite film and a photoactuator. Background technique [0002] The new nanocomposite actuator has many advantages such as remote, non-contact, and multi-selective control methods. There are many potential application prospects in the field of intelligent drives such as new intelligent control switches, optical sensors, artificial muscles, and joints. So far, the smart actuators based on the photo-mechanical response system mostly use a double-layer film structure, that is, two materials with different thermal expansion coefficients are used to prepare a double-layer film structure. Specifically, it is a composite film composed of a flexible film layer and a photothermal film layer. When exposed to light, the photothermal material causes heat, and the composite film is bent and deformed due to th...

Claims

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Application Information

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IPC IPC(8): F03G7/06F03G7/00
Inventor 吴长征杨波谢毅
Owner UNIV OF SCI & TECH OF CHINA
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