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

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

Inactive Publication Date: 2017-03-22
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 s...

Method used

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

Examples

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Effect test

Embodiment 1

[0026] Prepare 100 mL of 0.01 mol∙mL -1 Calcium chloride aqueous solution and sodium carbonate aqueous solution of equal concentration, add and dissolve 0.01 mol∙mL in calcium chloride aqueous solution -1 polyacrylic acid, add and dissolve 0.1 mg∙mL in sodium carbonate aqueous solution -1 Sodium alginate was added dropwise to the aqueous solution of polyacrylic acid and calcium chloride at a rate of 10 mL∙min. -1 , to obtain a composite polyelectrolyte hydrogel, prepare two layers of the same polyelectrolyte hydrogel, and insert 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 a new type of hydrogel material made of calcium carbonate and sodium alginate cross-linked polyacrylic acid, and the middle layer is a medium. For the elec...

Embodiment 2

[0034] Prepare 100 mL of 1 mol∙mL -1 Calcium chloride aqueous solution and sodium carbonate aqueous solution of equal concentration, add and dissolve 1 mol∙mL in calcium chloride aqueous solution -1polyacrylic acid, add and dissolve 5 mg∙mL in sodium carbonate aqueous solution -1 Sodium alginate, add sodium alginate and sodium carbonate aqueous solution dropwise to the aqueous solution of polyacrylic acid and calcium chloride at a certain speed, the speed is 0.1 mL∙min -1 , to obtain a composite polyelectrolyte hydrogel, prepare two layers of the same polyelectrolyte hydrogel, and insert 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 -1 Calcium chloride aqueous solution and sodium carbonate aqueous solution of equal concentration, add and dissolve 5 mol∙mL in calcium chloride aqueous solution -1 polyacrylic acid, add and dissolve 1 mg∙mL in sodium carbonate aqueous solution -1 Sodium alginate, add sodium alginate and sodium carbonate aqueous solution dropwise to the aqueous solution of polyacrylic acid and calcium chloride at a certain speed, the speed is 5 mL∙min -1 , to obtain a composite polyelectrolyte hydrogel, prepare two layers of the same polyelectrolyte hydrogel, and insert 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, and in particular relates 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 functions. Among them, some bionic smart skin materials can feedback external pressure, temperature, humidity and other stimuli through electrical signals, so as to realize 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 material robots are changing our way of life at an astonishing speed. In order to pursue mor...

Claims

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Application Information

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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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