Electrospinning-based flexible tensile strain sensor with spiral wound structure

Abstract

The invention discloses an electrospinning-based flexible tensile strain sensor with a spiral wound structure, and a preparation method of the electrospinning-based flexible tensile strain sensor. A sensitive resistor of the product is made of a bifilar helix prepared through twice twisting of a conductive nanofiber membrane prepared through the combination with an electrospinning method. The sensor has relatively high conductivity, still has a conductive property at relatively large tension and large-size tension, has advantages of relatively good toughness, high tensile recovery property, good tensile stability, wide strain withstanding range, simple preparation method and low production cost, and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of flexible electronic devices, in particular to a flexible and stretchable strain sensor with a helical winding structure based on electrospinning and a preparation method thereof. Background technique [0002] In recent years, since flexible wearable electronic devices can be integrated into clothing and human skin to obtain various information such as body movements, body temperature changes, psychological changes, and health conditions anytime and anywhere, that is, to work flexibly in non-planar working environments and Promote the integration of information and people. Therefore, it has received extensive attention in the fields of natural disaster early warning, artificial electronic skin, solar cells, smart displays, wearable personal health monitoring equipment, robots with artificial intelligence, and embedded medical devices. As the core component of flexible wearable devices, flexible sensors will affect t...

AI Technical Summary

Problems solved by technology

The most common product of traditional electrospinning is a two-dimensional non-woven fiber structure. This technology can be used to prepare micro-nano fiber membrane materials with certain electrical conductivity. However, although most of these materials can be bent and have certain flexibility, however, Often it cannot be stretched in a large range, and in the case of a small range of stretching, its electrical conductivity will drop sharply, and it cannot provide a good electrical signal response, which limits its application in flexible wearable devices to some extent. further application of

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