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A biocompatible flexible transparent conductive film and its preparation method and application

A transparent conductive film, biocompatible technology, applied in the field of materials, can solve the problems of ITO conductive film shock resistance, poor impact resistance, high cost of ITO conductive film, increased surface resistance of the film layer, etc., to achieve easy control of various parameters, The effect of good light transmittance, good electrical conductivity and mechanical properties

Active Publication Date: 2020-11-10
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ITO conductive film has the following defects: 1. ITO is a ceramic material, which is fragile and not resistant to bending, and the surface resistance of its film layer will increase significantly with the number of bending times
2. Indium is a rare element, the content of the earth is low, and the cost of ITO conductive film is high
3. The shock resistance and impact resistance of ITO conductive film are poor, the quality is heavy, and it is inconvenient to carry
In recent years, scientists have developed a variety of flexible conductive films, such as transparent dielectric polymer materials, graphene-coated polyurethane sponge materials, etc. However, such polymer materials have poor biocompatibility and are not suitable for electronic applications. In products such as skin and attachable electronic devices

Method used

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  • A biocompatible flexible transparent conductive film and its preparation method and application
  • A biocompatible flexible transparent conductive film and its preparation method and application
  • A biocompatible flexible transparent conductive film and its preparation method and application

Examples

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preparation example Construction

[0023] An embodiment of the present invention provides a method for preparing a biocompatible flexible transparent conductive film, comprising the following steps:

[0024] S1, the silk fibroin solution is dispersed on the surface of the substrate, and cured to obtain a flexible supporting film.

[0025] Further, in a preferred embodiment of the present invention, the silk fibroin solution may be a regenerated silk fibroin solution, or a mixed solution of regenerated silk fibroin and polyurethane solution. Preferably, in this embodiment, the silk fibroin solution is a mixed solution of regenerated silk fibroin and polyurethane solution. Further, the mass ratio of regenerated silk fibroin to polyurethane is 5-1:1. More preferably, the mass ratio of regenerated silk fibroin to polyurethane is 1:1.

[0026] Further, in this embodiment, the preparation method of the regenerated silk fibroin solution is: using natural silkworm cocoons with a mass fraction of 0.5-1% Na 2 CO 3 Cl...

Embodiment 1

[0044] A flexible transparent conductive film provided in this embodiment is obtained according to the following steps:

[0045] (1) Utilize 0.5% Na in natural cocoons 2 CO 3 Clean silk fibroin fibers were obtained through solution degumming, and then dissolved in 9.3 mol / L LiBr solution and then dialyzed to obtain a regenerated silk fibroin solution. The regenerated silk fibroin solution was concentrated to 10 wt%.

[0046] (2) Mix the regenerated silk fibroin solution in step (1) with 10wt% polyurethane solution at a mass ratio of 5:1, add 2wt% glycerin, and disperse evenly by ultrasonic to obtain a silk fibroin solution. The solution was poured on the substrate, and then left to stand in a constant temperature and humidity chamber with a relative humidity of 60% at 45° C. for 4 hours to dry and solidify to obtain a flexible support film.

[0047] (3) Prepare a PVA solution with a mass fraction of 12%, heat and stir at 80° C. to obtain a viscous liquid, and cool to room t...

Embodiment 2

[0051] The difference between the flexible transparent conductive film provided in this embodiment and Embodiment 1 is that:

[0052] In step (2), the mass ratio of the regenerated silk fibroin solution to the polyurethane solution is 3:1.

[0053] Other steps and parameters were the same as in Example 1, and a flexible and transparent conductive film 2 was obtained.

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Abstract

The invention provides the preparation method of a biocompatible flexible transparent conductive film and relates to the material technology field. The preparation method comprises the following stepsof dispersing a silk fibroin solution on the surface of a substrate, curing and acquiring a flexible support film; acquiring a polymer nanofiber web through electrostatic spinning, forming a metal cladding on the surface of the polymer nanofiber web and obtaining a nanofiber web film; and transferring the nanofiber web film to a flexible support film, then coating a protective solution on the nanofiber web film, and forming a protection film after curing. The manufactured conductive film has good light transmittance and conductive performance, the bonding force of the conductive film is good,an elasticity modulus is low and the film has a good appetency with a human body. Silk fibroin is especially taken as a support layer, and good biocompatibility, biodegradability, non-toxic and non-irritating performance and excellent optical performance are achieved. The invention also relates to the application of the conductive film.

Description

technical field [0001] The invention relates to the field of material technology, and in particular to a biocompatible flexible transparent conductive film and a preparation method and application thereof. Background technique [0002] Transparent conductive films are key materials for optoelectronic devices such as touch screens, displays, electronic paper, and smart windows. At present, the transparent conductive film is mainly a product with ITO as the conductive layer. However, the ITO conductive film has the following defects: 1. ITO is a ceramic material, which is brittle and not resistant to bending, and the surface resistance of its film layer will increase significantly with the number of times of bending. 2. Indium is a rare element with low earth content, and the cost of ITO conductive film is high. 3. The shock resistance and impact resistance of ITO conductive film are poor, the quality is heavy, and it is inconvenient to carry. At present, flexible conductiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/02
CPCH01B5/14H01B13/0026
Inventor 刘向阳厚琛郭文熹
Owner XIAMEN UNIV
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