A flexible transparent conductive film based on layer-by-layer assembly self-supporting film and its preparation method

A technology of transparent conductive film and layer-by-layer assembly, which is used in equipment for manufacturing conductive/semiconducting layers, conductive layers on insulating carriers, and cable/conductor manufacturing. Not resistant to high temperature and other problems, to achieve the effect of easy surface modification, strong mechanical properties, and super mechanical properties

Active Publication Date: 2020-02-04
TAIYUAN UNIV OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems that the flexible substrate material in the existing flexible transparent conductive film is not resistant to high temperature, not resistant to organic solvents, has poor mechanical properties, and has weak adhesion with conductive materials, it provides a self-supporting film based on layer-by-layer assembly Flexible transparent conductive film and preparation method thereof

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The glass substrate is first cleaned and modified with poly(diallyldimethylammonium chloride) (PDDA) to make its surface positively charged. Then alternately soak in 1~4mg / ml polyacrylic acid (PAA) solution (pH=2~9) and poly(allyl ammonium chloride) (PAH) solution (pH=2~9) for 5~20 minutes, And wash with water two to three times at intervals, 1 to 2 minutes each time. Cycle for more than 2 cycles until a layer-by-layer self-supporting film (PAA / PAH) of sufficient thickness is obtained n (n is the number of assembly cycles).

[0031] The prepared layer-by-layer assembled self-supporting membrane (PAA / PAH) n Heating and crosslinking in a vacuum oven at 150°C~250°C for 1~6 hours, then cooling to room temperature.

[0032] Drop-coating, spin-coating or knife-coating of high conductivity PEDOT:PSS on cross-linked layer-by-layer self-supporting films (PAA / PAH) n It is dried or dried, and then soaked in acid, organic solvent and water in order to enhance its conductivity. ...

Embodiment 2

[0036]The glass substrate is first cleaned and modified with branched polyethyleneimine (bPEI) to make its surface positively charged. Then soak in the mixed solution of 1~4mg / ml PAA and hyaluronic acid (HA) (pH=2~9) and the mixed solution of bPEI and PAH (pH=2~9) for 5~20 minutes alternately, and Interval with two to three washing steps, 1 to 2 minutes each time. Cycle for more than 2 cycles until obtaining a layer-by-layer self-supporting film with sufficient thickness (PAA&HA / bPEI&PAH) n (n is the number of assembly cycles).

[0037] The polyvinylpyrrolidone (PVPON) modified silver nanoparticle conductive ink was sprayed on the layer-by-layer self-supporting film (PAA&HA / bPEI&PAH) according to the pre-designed pattern using an improved inkjet printer n Leave to dry or tumble dry.

[0038] Layer-by-layer self-supporting films printed with patterned silver nanoparticles (PAA&HA / bPEI&PAH) n Place in a vacuum oven at 50°C~250°C to heat and crosslink for 1~6 hours, then cool...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
ultimate tensile strengthaaaaaaaaaa
ultimate tensile strengthaaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to view more

Abstract

The invention relates to a layer-by-layer assembly self-support film-based flexible transparent conductive film and a preparation method thereof, and belongs to the field of a transparent conductive film. The problems that a flexible substrate material in an existing flexible transparent film is not resistant to high temperature and organic solvent, is poor in mechanical property and is week in adhesive force with a conducive material can be solved. The flexible transparent conductive film comprises a layer-by-layer assembly film and a patterned conductive material. The preparation method comprises the steps of firstly, preparing the layer-by-layer assembly film; secondly, fabricating the patterned conductive material; and finally, separating the layer-by-layer assembly film from the substrate to form a conductive self-support film. Compared with the existing flexible transparent film, the layer-by-layer assembly self-support film has the advantages of high-temperature resistance, thinner thickness and higher mechanical property, film constituent and structure can be accurately controlled, surface modification is easy, and the purposes of improving transmitting, reducing reflectionand improving adhesive force between the substrate and the conductive material are achieved. Moreover, by the layer-by-layer self-support film having a self-recovery function, the conduction functionand the transparent self recovery also can be achieved, and the service lifetime of the flexible transparent film is prolonged.

Description

technical field [0001] The invention belongs to the technical field of transparent conductive films, and in particular relates to a flexible transparent conductive film based on a self-supporting film assembled layer by layer and a preparation method thereof. Background technique [0002] Transparent conductive films have high transmittance and high conductivity in the visible light range, and have been widely used in antistatic coatings, electromagnetic shielding, solar cells, light-emitting diodes, touch screens, sensors and actuators, smart skin, etc. With the development trend of flexible and thinner electronic devices, the research and development of flexible transparent conductive films has attracted more and more attention. At present, the main research work in the field of flexible transparent conductive films is roughly divided into two aspects: conductive materials and substrate materials. [0003] In terms of conductive materials, the ITO transparent conductive f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/0026
Inventor 陈小玲桑贾·马图尔郭巧静贺苗苗郝伟珍
Owner TAIYUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap