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Preparation method and application of a flexible and stretchable sensor array based on bidirectionally pre-stretched elastic substrate and aligned carbon nanotubes

A carbon nanotube and tensile sensing technology, which is applied in the direction of using electric/magnetic devices to transmit sensing components, can solve the problems of single function of flexible sensors, and achieve the effect of simple and convenient preparation method and guaranteed accuracy.

Active Publication Date: 2019-06-11
CHANGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the single-function problem of the existing flexible sensor, and to provide a method for preparing a flexible and stretchable sensor array based on bidirectionally pre-stretched elastic substrates and parallel carbon nanotubes, which is simple and fast , able to achieve multiple response functions and technical issues in application

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  • Preparation method and application of a flexible and stretchable sensor array based on bidirectionally pre-stretched elastic substrate and aligned carbon nanotubes
  • Preparation method and application of a flexible and stretchable sensor array based on bidirectionally pre-stretched elastic substrate and aligned carbon nanotubes
  • Preparation method and application of a flexible and stretchable sensor array based on bidirectionally pre-stretched elastic substrate and aligned carbon nanotubes

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preparation example Construction

[0025] The present invention is a method for preparing a flexible and stretchable sensor array based on bidirectionally pre-stretched elastic substrates and aligned carbon nanotubes, which specifically includes the following steps:

[0026] Step one, the preparation of the elastomer substrate.

[0027] In one embodiment, the purchased common commercial product thermoplastic elastomer SEBS (saturated styrene-butadiene-styrene block copolymer) is rinsed with tap water, followed by ultrasonic cleaning with alcohol and deionized water for 10-30min, Put it in a blast drying oven at 40-50°C for 5-10 minutes, cut the cleaned elastomer into squares, and stretch it bidirectionally with a jig as a bidirectionally pre-stretched thermoplastic elastomer SEBS.

[0028] Step 2, preparation of the mixed solution of the medium layer.

[0029] In one embodiment, 2.18 g of the cleaned thermoplastic elastomer SEBS was dissolved in 50 mL of cyclohexane, and the dissolution was accelerated by ultr...

Embodiment 1

[0039] Fabrication of flexible and stretchable sensor arrays based on bidirectionally pre-stretched elastic substrates and aligned carbon nanotubes.

[0040] Step 1: Preparation of the elastomeric substrate: The purchased common commercial product thermoplastic elastomer SEBS (saturated styrene-butadiene-styrene block copolymer) was rinsed with tap water, followed by ultrasonic cleaning with alcohol and deionized water for 30 min , put it into a blast drying oven at 50°C for 10 minutes, and cut the cleaned elastomer into 5×5cm 2 The square shape is biaxially stretched with a jig as the base material.

[0041] Step 2: Preparation of the mixed solution of the medium layer: Dissolve 2.18 g of the cleaned thermoplastic elastomer SEBS in 50 mL of cyclohexane, and accelerate the dissolution by ultrasonication for 60 min, and set aside.

[0042] Step 3: Preparation of the aligned carbon nanotube film: directly extract the carbon nanotube film from the multi-walled carbon nanotube ar...

Embodiment 2

[0045] Fabrication of flexible and stretchable sensor arrays based on bidirectionally pre-stretched elastic substrates and aligned carbon nanotubes.

[0046] Step 1: Preparation of the elastomeric substrate: The purchased common commercial product thermoplastic elastomer SEBS (saturated styrene-butadiene-styrene block copolymer) was rinsed with tap water, followed by ultrasonic cleaning with alcohol and deionized water for 10 min , put it into a blast drying oven at 40°C for 5 minutes, and cut the washed elastomer into 5×5cm 2 The square shape is biaxially stretched with a jig as the base material.

[0047] Step 2: Preparation of the mixed solution of the medium layer: Dissolve 2.18 g of the cleaned thermoplastic elastomer SEBS in 50 mL of cyclohexane, and accelerate the dissolution by ultrasonication for 60 min, and set aside.

[0048] Step 3: Preparation of the aligned carbon nanotube film: directly extract the carbon nanotube film from the multi-walled carbon nanotube arra...

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Abstract

The invention relates to a preparation method and application of a flexible stretchable sensing array based on a bidirectional pre-stretching elastic substrate and aligned carbon nanotubes. The preparation method comprises the steps of tiling a column of carbon nanotube films on the bidirectional pre-stretching elastic substrate; then spraying a dielectric layer mixed solution, vertically tiling another column of carbon nanotube films, wherein the perpendicularly crossing portion of the nanotubes forms a capacitor, and the acquired capacitor is of a CNTs / dielectric layer / CNTs structure; spraying the mixed solution again to serve as a protection layer; releasing the elastic substrate to the initial state so as to form a complex folded structure; and finally fixing a sensing unit by using anepoxy resin adhesive to obtain a capacitive flexible stretchable sensing array.

Description

technical field [0001] The invention belongs to the technical field of flexible and stretchable sensor arrays, and in particular relates to a preparation method and application of a flexible and stretchable sensor array based on bidirectionally pre-stretched elastic substrates and aligned carbon nanotubes. Background technique [0002] Flexible wearable and portable electronic devices have attracted more and more attention from researchers in recent years. The development of electronic skin-related technologies has made it a potential application value in the fields of robotics and medical equipment. The electronic skin flexible sensing system collects complex information of the surrounding environment, including pressure, strain, shear force and vibration, etc., and converts these physical quantities into electrical signals, such as voltage, through changes in resistance and capacitance, or through piezoelectric elements. Applying these electronic skins to robots, especiall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/24
CPCG01D5/24
Inventor 袁宁一王帅丁建宁韩立标徐江
Owner CHANGZHOU UNIV
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