Self-repairing ultra-sensitive conductive electronic skin sensor material and preparation method thereof

A conductive electronic and self-repairing technology, which is applied in the measurement of the properties and forces of piezoelectric resistance materials, can solve the problem of single function, and achieve the effects of sensitive conductivity, good biocompatibility, and excellent chemical crosslinking performance

Inactive Publication Date: 2019-02-01
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention aims at the lack of single function of the current self-repairing PVA hydrogel, and firstly prepares a graphene oxide/anthocyanin composite, which can make the PVA hydrogel have superconductivi

Method used

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  • Self-repairing ultra-sensitive conductive electronic skin sensor material and preparation method thereof
  • Self-repairing ultra-sensitive conductive electronic skin sensor material and preparation method thereof
  • Self-repairing ultra-sensitive conductive electronic skin sensor material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] (1) Preparation of anthocyanin-coated graphene oxide:

[0021] First, weigh 0.1 g of graphene oxide and add it to 100 ml of water. After dispersing uniformly by ultrasonic treatment, add 0.05 g of anthocyanin, adjust the pH of the solution to 8, and stir the reaction at 60°C for 8 hours; finally at 20,000 revolutions per minute. The graphene oxide / anthocyanin compound is separated in the centrifuge.

[0022] (2) Preparation of self-repairing ultra-sensitive conductive electronic skin sensor materials:

[0023] Add 0.15 g graphene oxide / anthocyanin complex to 20ml glycerin / water solution (volume ratio of glycerin to water is 9:1), disperse uniformly by ultrasonic treatment, then add 3 g polyvinyl alcohol (PVA), heat The PVA is completely dissolved at 95°C; finally, 5 ml of 5wt% borax solution is added dropwise to prepare a self-repairing ultra-sensitive electronic skin sensor material.

Example Embodiment

[0024] Example 2

[0025] (1) Preparation of anthocyanin-coated graphene oxide:

[0026] First, weigh 0.2 g of graphene oxide and add it to 100 ml of water. After dispersing uniformly by ultrasonic treatment, add 0.1 g of anthocyanin, and adjust the pH of the solution to 8, and stir for 8 hours at 60°C; finally at 20,000 revolutions / min. The graphene oxide / anthocyanin compound is separated in the centrifuge.

[0027] (2) Preparation of self-repairing ultra-sensitive conductive electronic skin sensor materials:

[0028] Add 0.3 g of graphene oxide / anthocyanin complex to 20 ml of glycerin / water solution (volume ratio of glycerin to water is 9:1), disperse uniformly by ultrasonic treatment, then add 6 g of polyvinyl alcohol (PVA), and heat The PVA is completely dissolved at 95°C; finally, 5 ml of 5wt% borax solution is added dropwise to prepare a self-repairing ultra-sensitive electronic skin sensor material.

Example Embodiment

[0029] Example 3

[0030] (1) Preparation of anthocyanin-coated graphene oxide:

[0031] First, weigh 0.3 g of graphene oxide and add it to 100 ml of water. After uniformly dispersed by ultrasonic treatment, add 0.15 g of anthocyanin, adjust the pH of the solution to 8, and stir for 8 hours at 60°C; and finally at 20,000 revolutions per minute. The graphene oxide / anthocyanin compound is separated in the centrifuge.

[0032] (2) Preparation of self-repairing ultra-sensitive conductive electronic skin sensor materials:

[0033] Add 0.45 g of graphene oxide / anthocyanin complex to 20 ml of glycerin / water solution (volume ratio of glycerin to water is 9:1), disperse uniformly by ultrasonic treatment, then add 9 g of polyvinyl alcohol (PVA), and heat The PVA is completely dissolved at 95°C; finally, 5 ml of 5wt% borax solution is added dropwise to prepare a self-repairing ultra-sensitive electronic skin sensor material.

[0034] Performance Testing

[0035] This self-repairing ultra-sensitiv...

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Abstract

The invention belongs to the technical field of sensor materials, and concretely relates to a self-repairing ultra-sensitive conductive electronic skin sensor material and a preparation method thereof. The method comprises the following steps: wrapping the surface of graphene oxide with anthocyanidin, adding the wrapped graphene oxide to an aqueous solution of polyvinyl alcohol (PVA)/glycerin, performing uniform mixing, and coagulating the obtained mixture with a borax solution to prepare self-repairing ultra-sensitive PVA hydrogel. The graphene oxide/anthocyanidin compound makes the PVA hydrogel have an ultra-sensitive performance, so the PVA hydrogel can be used as the self-repairing ultra-sensitive conductive electronic skin sensor material.

Description

technical field [0001] The invention relates to a novel self-repairing electronic skin sensor material, in particular to a self-repairing supersensitive conductive electronic skin sensor material and a preparation method thereof. Background technique [0002] Hydrogel (Hydrogel) introduces a part of hydrophobic groups and hydrophilic residues into water-soluble polymers with a network crosslinked structure, and the hydrophilic residues combine with water molecules to connect the water molecules inside the network, while Cross-linked polymer with hydrophobic residues that swell with water. Hydrogel is a polymer network system, which is soft in nature, can maintain a certain shape, and can absorb a large amount of water. Although there are many kinds of materials for preparing hydrogels, polyvinyl alcohol (PVA) has always been the polymer of choice for preparing hydrogels. This is mainly because PVA hydrogel has the advantages of low toxicity, high water absorption and good ...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08K9/10C08K3/04C08J3/075C08J3/24G01L1/18
CPCC08J3/075C08J3/24C08J2329/04C08K3/042C08K9/10C08K2201/001G01L1/18
Inventor 潘潇峰刘凯黄六莲陈礼辉
Owner FUJIAN AGRI & FORESTRY UNIV
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