A spider web-shaped flexible strain sensor capable of identifying strain direction and its preparation method

A technology of strain sensor and strain direction, which is applied in the direction of electric/magnetic solid deformation measurement, fiber processing, electromagnetic measuring device, etc., can solve the problems of molds restricting the economic benefits of industrial production, the lengthy period of flexible strain sensor, and the negative impact of environmental protection, etc. , to achieve the effects of large strain test range, improved conductivity, and improved utilization
CN111649665BActive Publication Date: 2022-03-18SOUTHWEST PETROLEUM UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWEST PETROLEUM UNIV
Publication Date
2022-03-18

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Abstract

The invention discloses a spider web-shaped flexible strain sensor capable of identifying the strain direction and a preparation method thereof, comprising the following steps: mixing conductive filler, hot-melt adhesive and N,N-dimethylformamide solvent for ultrasonic dispersion to obtain dispersion Put the granular thermoplastic polymer into the screw extruder to extrude the pure thermoplastic polymer filament; use the winding roller traction device to pull the filament through the dispersion at a uniform speed, forming a uniform thin conductive layer on its surface , after being completely dried, use a 3D printer to print the silk into a spider web-shaped array; fix the wires on the center of the spider web and the ends of the longitudinal wires with conductive silver glue to make a spider web-shaped flexible strain sensor. The invention not only quickly prepares a spider web-shaped custom structure, but also has the function of identifying the strain direction, and has the advantages of high linearity, high sensitivity, wide strain range, fast response, low hysteresis and good stability. It has great potential in the application of wearable devices.
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Description

technical field

[0001] The invention relates to a spider web-shaped flexible strain sensor capable of identifying strain directions and a preparation method thereof, belonging to the technical field of flexible strain sensors. Background technique

[0002] In recent years, with the development of wearable electronic devices, flexible strain sensors as the core of wearable electronic devices have attracted much attention because of their wide range of applications. Compared with traditional strain sensors, flexible strain sensors have high flexibility, high sensitivity, large strain working range and good biocompatibility, and have great potential in wearable electronics, biomedicine, soft robots and other fields. Therefore, flexible Strain sensors have greater potential market value. The flexible strain sensor is composed of two parts: conductive nanofillers and elastic base materials. The conductive nanofillers include carbon nanotubes, carbon black, graphene, carbon fiber...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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