A flexible conductive paper loaded with silver nanowires and its preparation method and application

A flexible conductive paper and silver nanowire technology, applied in the field of sensing materials, can solve the problems of not being able to make full use of excellent performance, waste of resources, and not being able to give full play to economic value, and achieve degradable biocompatibility and fast paper forming speed , low cost effect

Active Publication Date: 2022-05-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally, snowflake fiber is generally used to make leather paper, firecracker ignition paper, paper umbrella, paper fan, oil paper, oil basket, window paste, etc. These methods cannot make full use of its excellent performance, nor can it give full play to its economic value, resulting in resource waste

Method used

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  • A flexible conductive paper loaded with silver nanowires and its preparation method and application
  • A flexible conductive paper loaded with silver nanowires and its preparation method and application
  • A flexible conductive paper loaded with silver nanowires and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0054] (1) Synthesis of silver nanowires (AgNWs): Accurately weigh 0.0162 g of ferric chloride hexahydrate crystals (FeCl 3 ·6H 2 O) put it in a beaker, slowly add ethylene glycol (EG) to the total mass of the solution to be 100g (FeCl 3 The concentration of the solution is 550 μM), stir the liquid with a glass rod while adding, and prepare FeCl 3 Salt solution, for use; 0.2g of copper polyvinylpyrrolidine (PVP, Mw=44000~54000) was added to a beaker containing 25ml of ethylene glycol, and magnetically stirred in a 60°C water bath until fully dissolved, Cooled to room temperature to obtain a PVP solution; then 0.2 g of silver nitrate (AgNO 3 ) crystals were added to the PVP solution, stirred rapidly until a transparent and homogeneous solution was formed; finally 3.5 g FeCl was added 3 Salt solution (PVP:AgNO 3 : FeCl 3 =19:5600:10 (material ratio), stir for 1 to 2 minutes, immediately transfer it to a reaction kettle preheated to 125°C, and react for 3 hours. After cooli...

Embodiment 2

[0058] (1) Synthesis of silver nanowires: Accurately weigh 0.0162 g of ferric chloride hexahydrate crystals (FeCl) with a balance 3 ·6H 2 O) put it in a beaker, slowly add ethylene glycol (EG) to the total mass of the solution to be 100g (FeCl 3 The concentration of the solution is 600 μM), stir the liquid with a glass rod while adding, and prepare FeCl 3 Salt solution, for use; 0.2g of copper polyvinylpyrrolidine (PVP, Mw=44000~54000) was added to a beaker containing 25ml of ethylene glycol, and magnetically stirred in a 60°C water bath until fully dissolved, Cooled to room temperature to obtain a PVP solution; then 0.25 g of silver nitrate (AgNO 3 ) crystals were added to the PVP solution, stirred rapidly until a transparent and homogeneous solution was formed; finally 3.5 g FeCl was added 3 Salt solution (PVP:AgNO 3 : FeCl 3 =19:7000:10 (amount of substance ratio)), stir for 1-2 minutes, immediately transfer it to a reaction kettle preheated to 130°C, and react for 4 h...

Embodiment 3

[0062] (1) Synthesis of silver nanowires: Accurately weigh 0.0162 g of ferric chloride hexahydrate crystals (FeCl) with a balance 3 ·6H 2 O) put it in a beaker, slowly add ethylene glycol (EG) to the total mass of the solution to be 100g (FeCl 3 The concentration of the solution is 600 μM), stir the liquid with a glass rod while adding, and prepare FeCl 3 Salt solution, for use; 0.2g of copper polyvinylpyrrolidine (PVP, Mw=44000~54000) was added to a beaker containing 25ml of ethylene glycol, and magnetically stirred in a 60°C water bath until fully dissolved, Cooled to room temperature to obtain a PVP solution; then 0.25 g of silver nitrate (AgNO 3 ) crystals were added to the PVP solution, stirred rapidly until a transparent and homogeneous solution was formed; finally 3.5 g FeCl was added 3 Salt solution (PVP:AgNO 3 : FeCl 3 =19:7000:10 (amount of substance ratio)), stir for 1-2 min, immediately transfer it to a reaction kettle preheated to 130°C, and react for 5 h. A...

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Abstract

The invention discloses a flexible conductive paper loaded with silver nanowires, a preparation method and application thereof. The method comprises the following steps: (1) adding polyvinylpyrrolidine copper into ethylene glycol, heating and dissolving to obtain a PVP solution; then adding silver nitrate and FeCl-containing 3 ethylene glycol solution, and react at 125-140°C to obtain silver nanowires; finally, disperse silver nanowires in ethanol to obtain AgNWs dispersion; (2) add AgNWs dispersion to snowflake skin slurry After oscillating evenly, the paper is copied into paper by vacuum filtration method, and then dried in a roller dryer and hot-pressed and fused to obtain the flexible conductive paper loaded with silver nanowires. The preparation method of the present invention is easy to operate, fast in paper forming speed and low in cost, and the obtained flexible conductive paper has the characteristics of light weight, degradability, good biocompatibility, high electrical conductivity, excellent folding resistance, etc., and is used in wearable electronic devices. has potential application prospects.

Description

technical field [0001] The invention belongs to the technical field of sensing materials, and particularly relates to a flexible conductive paper loaded with silver nanowires and a preparation method and application thereof. Background technique [0002] In order to meet the requirements of wearable electronic devices, the materials of sensors need to be thin, soft, and corrosion-resistant. Currently, the main materials used in wearable devices include flexible materials, paper-based materials, nanomaterials and organic materials. Among them, paper base generally has the advantages of easy recycling and disposal, low cost, strong water absorption and good flexibility due to its own characteristics, so it has become a research hotspot in the field of sensing material technology in recent years. [0003] Snowflakes, also known as Jiexiang, Huangruixiang and Sanya, are high-grade raw materials for papermaking, hence the name Snowflakes. Its fiber length is as long as 2.9-4.5mm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H13/48D21H15/02D21H11/08D21F13/00D21H25/00B22F9/24B22F1/054B82Y40/00B82Y30/00H01B1/16H01B1/22H01B13/00
CPCD21H27/00D21H13/48D21H15/02D21H11/08D21F13/00D21H25/005B22F9/24B82Y40/00B82Y30/00H01B1/16H01B1/22H01B13/00B22F1/0547
Inventor 傅丹宁杨仁党王阳李喜坤楚守兴
Owner SOUTH CHINA UNIV OF TECH
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