Flexible pressure sensor with high sensitivity and wide range and preparation method thereof
A pressure sensor and wide range technology, applied in the direction of measuring force, instruments, measuring devices, etc., can solve the problems of low pressure monitoring range, reduced sensitivity, and failure to meet application requirements, and achieve improved pressure monitoring range, high sensitivity, The effect of low production cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1～9
[0062] Configure the conductive nanoparticle dispersion liquid according to the parameters in Table 1: place the conductive nanoparticles in deionized water at room temperature (25°C) for ultrasonic dispersion for 0.5 to 1 hour, and the ultrasonic power is 400W to obtain a mass concentration of the conductive nanoparticles of 0.1 to 0.5 % conductive nanoparticle dispersion.
[0063] Table 1
[0064] Example serial number conductive nanoparticles Dispersion time (hours) Concentration Example 1 carbon nanotubes 0.5 0.4％ Example 2 carbon fiber 0.5 0.1％ Example 3 carbon black 0.8 0.25％ Example 4 metal nanoparticles 1 0.3％ Example 5 mineral powder 1.5 0.4％ Example 6 metal nanowire 1.4 0.35％ Example 7 metal oxide powder 2 0.4％ Example 8 Graphene 2 0.5％ Example 9 A mixture of carbon nanotubes and carbon fibers with a mass ratio of 1:1 2 0.3％
Embodiment 10～18
[0066] Using the raw materials in Table 2, a polymer film with a network structure of microfibers is prepared by a corresponding film-making process; see Table 2 for the diameters of microfibers in the corresponding polymer film.
[0067] Table 2
[0068]
[0069]
Embodiment 19
[0071] A preparation method of a loose compressible conductive layer is as follows: firstly, the polymer film having an ultrafine fiber network structure prepared in Example 10 is ultrasonically cleaned in ethanol for 0.4h, and the ultrasonic power of the ultrasonic cleaning is 500W, and then the The conductive nanoparticle dispersion prepared in Example 1 was sprayed onto the surface of the polymer film with a network structure of ultrafine fibers, and finally dried at 40°C for 36 hours to obtain a loose and compressible conductive layer; 0.5% of the mass of polymer film with fine fiber network structure;
[0072] The prepared loose compressible conductive layer is a conductive layer with a multi-level micro / nanoporous structure composed of ultrafine fiber network and conductive nanoparticles; the pore size of the multi-level micro / nanoporous structure is 200 μm; The electrical conductivity is 0.8S / m; the thickness of the loose compressible conductive layer is 0.6mm.
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
| electrical conductivity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More