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Self-healing capacitive smart skin with high sensitivity and preparation method thereof

A smart skin, high-sensitivity technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problem of difficult to achieve weak pressure response, complete self-healing effect of bionic human skin, and dehydration failure. and other problems, to achieve the effect of broad industrial application prospects, easy mass production, and short production cycle.

Inactive Publication Date: 2019-01-15
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a big gap between the smart skin materials prepared based on hydrogel and the real skin of the human body. The hydrogel smart skin is also more difficult to achieve the response to the weak pressure
In addition, hydrogel materials may have problems such as dehydration failure during use

Method used

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  • Self-healing capacitive smart skin with high sensitivity and preparation method thereof
  • Self-healing capacitive smart skin with high sensitivity and preparation method thereof
  • Self-healing capacitive smart skin with high sensitivity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Prepare 100 mL of 0.01 mol∙mL separately -1 Calcium chloride aqueous solution and equal concentration of sodium carbonate aqueous solution, add and dissolve 0.01 mol∙mL in the calcium chloride aqueous solution -1 of polyacrylic acid, added and dissolved 0.1 mg∙mL in sodium carbonate aqueous solution -1 The sodium alginate solution of sodium alginate was added dropwise to the aqueous solution of polyacrylic acid and calcium chloride at a speed of 10 mL∙min -1 , obtain a composite polyelectrolyte hydrogel, prepare two layers of the same polyelectrolyte hydrogel respectively, and embed a layer of polyethylene film in the middle to construct a sandwich-type capacitive smart skin device.

[0027] figure 1 The schematic diagram on the left shows the structure of the smart skin, and the picture on the right is a photo of the smart skin. The upper and lower ion conducting layers are calcium carbonate and sodium alginate cross-linked polyacrylic acid, a new type of hydrogel ma...

Embodiment 2

[0034] Prepare 100 mL of 1 mol∙mL separately -1 Calcium chloride aqueous solution and equal concentration of sodium carbonate aqueous solution, add and dissolve 1 mol∙mL in the calcium chloride aqueous solution -1of polyacrylic acid, added and dissolved 5 mg∙mL in sodium carbonate aqueous solution -1 The sodium alginate solution was added dropwise to the aqueous solution of polyacrylic acid and calcium chloride at a speed of 0.1 mL∙min -1 , obtain a composite polyelectrolyte hydrogel, prepare two layers of the same polyelectrolyte hydrogel respectively, and embed a layer of polypropylene film in the middle to construct a sandwich-type capacitive smart skin device.

Embodiment 3

[0036] Prepare 100 mL of 5 mol∙mL separately -1 Calcium chloride aqueous solution and equal concentration of sodium carbonate aqueous solution, add and dissolve 5 mol∙mL in the calcium chloride aqueous solution -1 of polyacrylic acid, added and dissolved 1 mg∙mL in sodium carbonate aqueous solution -1 The sodium alginate solution was added dropwise to the aqueous solution of polyacrylic acid and calcium chloride at a certain speed, and the speed was 5 mL∙min -1 , obtain a composite polyelectrolyte hydrogel, prepare two layers of the same polyelectrolyte hydrogel respectively, and embed a layer of polyacrylate tape in the middle to construct a sandwich-type capacitive smart skin device.

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Abstract

The invention belongs to the technical field of functional materials, and particularly relates to a self-healing capacitive intelligent skin with high sensitivity and a preparation method thereof. According to the invention, amorphous calcium carbonate and sodium alginate are crossly linked with polyacrylic acid to obtain polyelectrolyte gel which is easy to deform and has the self-healing capability, and the gel can be further designed into the bionic intelligent skin which has high sensitivity and the self-healing capability and can be recycled. The raw materials involved in the invention are natural high polymer sodium alginate, calcium carbonate and polyacrylic acid with good biocompatibility, the solvent used is water, the preparation process is green and pollution-free, the operation is simple and convenient, the production cost is low, and the large-scale industrial production is expected to be realized. Compared with the currently reported intelligent skin material, the bionic intelligent skin designed by the invention achieves high sensitivity and complete self-healing effect and has the potential of large-scale preparation and a wide commercial application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional materials, in particular to a self-healing capacitive smart skin with high sensitivity and a preparation method thereof. Background technique [0002] In recent years, smart materials have received extensive attention due to their unique response and feedback capabilities. Among them, some bionic smart skin materials can feedback external pressure, temperature, humidity and other stimuli through electrical signals, thereby realizing the function of simulating human skin. For example, tactile sensor devices applied to electronic skin have attracted extensive attention of researchers, and prosthetics with tactile feedback systems and computer touch screens have come out one after another. Today, a series of products such as Google Glasses, sports tracking fitness wristbands, and intelligent soft matter robots are changing our way of life at an alarming rate. In order to pursue more product func...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/06B32B27/08B32B27/28B32B37/00
CPCB32B27/06B32B27/08B32B27/18B32B27/28B32B27/32B32B37/00B32B2250/40
Inventor 雷周玥朱文成王铨康武培怡
Owner FUDAN UNIV
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