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Electronic skin capable of quickly and reversibly adhering and deadhering as well as preparation method and application of electronic skin

An electronic skin and fast technology, applied in the field of human body wearable sensing materials, can solve the problems of non-adhesion and poor fit of the skin, achieve synchronous movement and deformation, excellent stretch and resilience, and realize physical infiltration and adhesion attached effect

Pending Publication Date: 2021-06-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the surface of the existing electronic skin is flat and poorly compatible with human skin and has no adhesion to the skin, the primary purpose of the present invention is to provide an electronic skin with fast reversible adhesion and de-adhesion

Method used

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  • Electronic skin capable of quickly and reversibly adhering and deadhering as well as preparation method and application of electronic skin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1) Casting an epoxy resin matrix with shape memory function (glass transition temperature at 37°C) into a silicon wafer mold with an array of micro-pillar grooves, wherein the linear density of the micro-pillar grooves is 0.1 μm -1 , with a diameter of 10 μm and a depth of 5 μm, vacuuming and defoaming so that the shape-memory epoxy resin completely fills the groove, and the thickness of the shape-memory polymer is 5 μm higher than the depth of the groove;

[0050] 2) heating the shape-memory epoxy resin at 35° C. for 5 minutes to harden its surface, and using ultraviolet ozone (ultraviolet wavelength 253 nm, energy 472 kJ / mol) to irradiate the surface of the surface-hardening shape-memory epoxy resin for 10 minutes, pouring elastomeric liquid silicone rubber on the surface of the surface-treated shape-memory epoxy resin layer to ensure that the elastomeric liquid silicone rubber is stably present on the upper layer of the shape-memory epoxy resin;

[0051] 3) further h...

Embodiment 2

[0055] 1) Casting a polyurethane matrix with shape memory function (glass transition temperature at 37°C) into a silicon wafer mold with an array of micro-columnar grooves, where the linear density of the micro-cylindrical grooves is 1 μm -1 , with a diameter of 1 μm and a depth of 10 μm, vacuuming and defoaming so that the shape-memory polyurethane completely fills the groove, and the thickness of the shape-memory polymer is 100 μm higher than the depth of the groove;

[0056] 2) Heating the shape-memory polyurethane at 35°C for 5 minutes to harden its surface, using plasma (power 36W) to perform surface treatment on the surface-hardened shape-memory polyurethane for 10 minutes, and pouring a thermoplastic elastomer polyurethane solution on the The surface of the surface-treated shape-memory polyurethane layer ensures that the thermoplastic elastomer polyurethane solution exists stably on the upper layer of the shape-memory polyurethane;

[0057] 3) further heating at 35° C. ...

Embodiment 3

[0061] 1) The liquid crystal elastomer (glass transition temperature: 45°C) matrix with shape memory function is cast into a polytetrafluoroethylene mold with a micro-columnar groove array, wherein the linear density of the micro-cylindrical grooves is 0.1 μm -1 , with a diameter of 10 μm and a depth of 10 μm, vacuumizing and defoaming so that the shape-memory liquid crystal elastomer completely fills the groove, and the thickness of the shape-memory polymer is 290 μm higher than the depth of the groove;

[0062] 2) Heating the shape-memory liquid crystal elastomer at 30°C for 5 minutes to harden its surface, using ultraviolet ozone (ultraviolet wavelength 253nm, energy 472kJ / mol) to irradiate the surface of the surface-hardened shape-memory liquid crystal elastomer for 10 minutes, and Elastomer liquid natural rubber latex is poured on the surface of the surface-treated shape-memory liquid crystal elastomer layer to ensure that the elastomer liquid natural rubber is stably pres...

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Abstract

The invention discloses electronic skin capable of quickly and reversibly adhering and deadhering as well as a preparation method and application of the electronic skin. The electronic skin structure sequentially comprises a reversible bonding layer, a supporting layer and a functional layer from bottom to top, the lower surface of the reversible bonding layer is provided with a micro-cylindrical array structure, the reversible bonding layer is made of a shape memory polymer material, the supporting layer is made of an elastomer material, and the functional layer is made of a conductive material. The electronic skin can be attached to the surface of the skin of the human body when the temperature is higher than the temperature of the human body and can be tightly attached to the temperature close to the temperature of the human body, and quick adhesion removal is achieved when the temperature rises to be higher than the temperature of the human body again; the electronic skin has high conductivity, has high responsiveness to various deformations of a human body, and has wide application prospects in the fields of flexible wearable equipment, flexible patch electrodes, intelligent robots, health monitoring and the like.

Description

technical field [0001] The invention belongs to the field of human body wearable sensing materials, and in particular relates to a fast reversible adhesion and de-adhesion electronic skin and its preparation method and application. Background technique [0002] Electronic skin refers to a type of flexible electronic sensing material that can be directly attached to the surface of the skin and record the health status of the human body in real time by collecting changes in various health indicators of the human body. Compared with the traditional "hospital-style" health checkup, electronic skin can satisfy users to monitor and record physiological health information anytime and anywhere, avoiding the cumbersome medical treatment process in the hospital, and has many advantages such as convenience, efficiency and comfort. In the future, health monitoring, remote care , human-computer interaction, and portable wearable devices have important research value and application prosp...

Claims

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Application Information

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IPC IPC(8): A61B5/00
CPCA61B5/6832A61B5/68335
Inventor 刘岚陈松石伟张广勇刘泽林
Owner SOUTH CHINA UNIV OF TECH
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