A stretchable strain sensor based on polyurethane fiber and its preparation method

A polyurethane fiber and tensile strain technology, applied in the field of sensors, can solve the problems of difficulty in compatibility with the skin, durability, low ductility of strain sensors, and low linearity, etc., to achieve improved linear fitting, high stretchability, good sensitivity effect

Active Publication Date: 2020-04-14
HEFEI UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0005] Based on the impregnation-coating method, the present invention proposes a stretchable strain sensor based on polyurethane fiber and its preparation method, aiming at solving the problem of low extensibility, low linearity, poor flexibility and difficulty in contact with the skin of existing strain sensors. Compatibility and poor durability issues, and improve the ability of strain sensors as wearable devices

Method used

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  • A stretchable strain sensor based on polyurethane fiber and its preparation method
  • A stretchable strain sensor based on polyurethane fiber and its preparation method
  • A stretchable strain sensor based on polyurethane fiber and its preparation method

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Embodiment Construction

[0041] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The following embodiments are implemented on the premise of the technical solutions of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to Examples described below.

[0042] like figure 1 As shown, the structure of the polyurethane fiber-based stretchable strain sensor of the present invention is as follows: the polyurethane fiber 1 is used as the matrix, and the inner layer conductive structure 2 and the outer layer conductive structure 3 are successively wrapped on the surface of the matrix; wherein the inner layer conductive structure is Graphene nanosheets, the outer conductive structure is a synergistic conductive network layer of carbon black and single-walled carbon nanotubes. In order to make the illustration clearer, the tw...

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Abstract

The invention discloses a stretchable strain sensor based on polyurethane fiber and a preparation method of the strain sensor. The polyurethane fiber is taken as a matrix, the surface of the matrix issequentially wrapped with an inner conductive structure adopting a graphene nanosheet layer and an outer conductive structure adopting a collaboratively conductive network layer of carbon black and single-walled carbon nanotubes. The strain sensor has good softness, stretching characteristic and large-scale integration characteristic and can serve as a wearable device compatible with skin.

Description

technical field [0001] The invention belongs to the field of sensors, and in particular relates to a polyurethane fiber-based stretchable strain sensor and a preparation method thereof. Background technique [0002] Wearable strain sensor is an artificial flexible electronic device with high flexibility and stretchability, sensing sensitivity similar to the tactile function of human skin, and can realize the perception function of external environment information. The field of interaction has broad application prospects. Conceiving, designing, and fabricating strain sensors for human motion detection, vital sign monitoring, and acoustic signal or gesture recognition have attracted much attention recently, becoming a research hotspot in the fields of flexible electronics, artificial skin, and healthcare. The sensors used based on the above applications must have high stretchability, flexibility and good sensitivity. Metal-type and rigid semiconductor-type materials with onl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/74D06M15/643D06M15/233D06M15/53G01B7/16D06M101/38
CPCD06M11/74D06M15/233D06M15/53D06M15/643D06M2101/38D06M2200/50G01B7/18
Inventor 黄英赵雨农王志强郭小辉刘平刘彩霞
Owner HEFEI UNIV OF TECH
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