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A kind of transparent conductive compound regulated by magnetic field and its preparation method

A technology of transparent conduction and magnetic field control, applied in the field of materials, can solve the problems of piezoresistive sensors that are easy to crack, and achieve the effects of high yield, unaffected elasticity, and high conductivity

Active Publication Date: 2020-09-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a transparent conductive compound regulated by a magnetic field and its preparation method for the problem that the existing piezoresistive sensor is easy to crack

Method used

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  • A kind of transparent conductive compound regulated by magnetic field and its preparation method
  • A kind of transparent conductive compound regulated by magnetic field and its preparation method
  • A kind of transparent conductive compound regulated by magnetic field and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Preparation of rGO / NiNWs / Ecoflex magnetically controlled transparent conductive composite material with a filler volume fraction of 0.027%

[0037] Concrete preparation is carried out as follows:

[0038] 1. Preparation of nickel nanowires: prepare 0.01mol / L NiCl 2 50mL of aqueous solution of 0.04mol / L NaOH and 50mL of aqueous solution of 0.04mol / L NaOH, magnetically stirred for half an hour to fully dissolve. The two solutions were mixed and ultrasonicated for half an hour, then placed in an external magnetic field, kept at a temperature of 80° C. in a constant temperature water bath, and magnetically stirred for 10 minutes. Add 3 mL of reducing agent hydrazine hydrate solution to the mixed solution, collect the product after the reaction is completed and wash it several times with ethanol and deionized water respectively. Finally, the product was dried in a vacuum oven at 60° C. for 6 hours.

[0039] 2. Graphene and nickel nanowire loading: Prepare 100 m...

Embodiment 2

[0041] Example 2: Preparation of rGO / NiNWs / Ecoflex magnetically controlled transparent conductive composite material with a filler volume fraction of 0.08%

[0042] The difference between this embodiment and the specific example 1 is that in the third step of preparing graphene / nickel nanowires / Ecoflex, the volume fraction of the nickel nanowire-loaded graphene product is 0.08%. Others are identical with specific embodiment 1.

Embodiment 3

[0043] Example 3: Preparation of rGO / NiNWs / Ecoflex magnetically controlled transparent conductive composite material with a filler volume fraction of 0.14%

[0044] The difference between this embodiment and the specific example 1 is that in the third step of preparing graphene / nickel nanowires / Ecoflex, the volume fraction of the nickel nanowire-loaded graphene product is 0.14%. Others are identical with specific embodiment 1.

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Abstract

The invention discloses a transparent conductive compound adjusted and controlled by a magnetic field and a preparation method of the transparent conductive compound. The compound takes elastic silicone rubber as a matrix, graphene with a high specific surface area is loaded on magnetic materials to be introduced into the matrix, the magnetic materials are directionally arranged through adjustmentand control of the magnetic field, and effective utilization is realized in the direction needing electric conduction, so that an ultra-low seepage threshold is obtained. The transparent conductive compound adjusted and controlled by the magnetic field has good light transmittance and elasticity and high conductivity. The seepage threshold of the prepared transparent conductive compound is as lowas 0.14vol%, and at the moment, the conductivity is 0.002S / m which is increased by 7 orders of magnitude. The transparent conductive compound disclosed by the invention has the advantages that adjustment and control of conductivity orientation can be realized, the tensile property is good, the light transmittance is good, the process is simple, the cost is low, and the transparent conductive compound can be applied to electronic skin and a flexible pressure sensor instead of a traditional device with a double-layer structure including a support layer and a conductive layer.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a transparent conductive compound regulated by a magnetic field and a preparation method thereof. The material has an ultra-low percolation threshold, the conductive phase is a magnetic material loaded with graphene, and the conductive direction and conductivity can be controlled by a magnetic field. , the transparent composite has good elasticity and conductivity at the same time. Background technique [0002] In today's era, artificial intelligence is booming, and related flexible electronic devices are also widely used in all aspects of life, such as flexible transistors, flexible displays, electronic skin, medical monitoring, micro-expression and motion sensing, etc. Resistive pressure sensors (piezoresistive sensors) have attracted widespread attention due to their simple structure, high sensitivity, easy implementation of high pixels and wide sensitive pressure range, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08L67/02C08K9/12C08K3/04C08K7/00C08K3/08C08J5/18
CPCC08J5/18C08J2367/02C08J2383/04C08K2003/0862C08K2201/001C08K2201/01C08K2201/011C08L83/04C08L2201/10C08L67/02C08K9/12C08K3/042C08K7/00C08K3/08
Inventor 王宗荣王珊简阅陈国瑞李皓盛牛韶玉陈凯峰许露杭王子琦周麟铭苗雨欣杜丕一韩高荣
Owner ZHEJIANG UNIV