Flexible conductive composite film and preparation method thereof, flexible pressure sensor and preparation method thereof

A technology of pressure sensors and composite membranes, applied in the field of sensors, can solve the problems of expensive equipment and achieve the effects of low cost, fast response time, and good stability

Active Publication Date: 2022-05-10
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductive layer of this structure is prepared by sputtering gold by magnetron sputtering, and the equipment involved in this method is expensive

Method used

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  • Flexible conductive composite film and preparation method thereof, flexible pressure sensor and preparation method thereof
  • Flexible conductive composite film and preparation method thereof, flexible pressure sensor and preparation method thereof
  • Flexible conductive composite film and preparation method thereof, flexible pressure sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] This embodiment provides a flexible pressure sensor, the preparation method of which includes the following steps (for the preparation flow chart, see figure 1 , the layered schematic diagram of the sensor see Figure 5 ):

[0073] (1) Cut 500-mesh sandpaper into a shape of 5cm×5cm for cleaning, and then use plasma treatment for 5 minutes before use.

[0074] (2) Dissolve the SBS particles in ethyl acetate solvent to configure a solution with a mass fraction of 20wt%, and then pour the SBS solution on the surface of the pretreated sandpaper, then spin coat it at a speed of 100rpm for 10s, and then place it on Dry in a blast oven at 50°C for 3h. The film-forming SBS polymer was slowly peeled off from the sandpaper surface to obtain a microstructured SBS flexible substrate.

[0075] (3) Place the SBS film in a silver trifluoroacetate / ethanol solution with a mass fraction of 10% for 15 minutes, use a hydrazine hydrate / ethanol solution with a mass fraction of 50% after d...

Embodiment 2

[0080] This embodiment provides a flexible pressure sensor, the preparation method of which includes the following steps:

[0081] (1) The microstructured silicon template (Chengdu Keshengda Guandian Technology Co., Ltd., 20*10*0.7) was cut into a shape of 1cm×1cm for cleaning, and then treated with plasma for 5 minutes before use.

[0082](2) Dissolve the SIS particles in ethyl acetate solvent to configure a solution with a mass fraction of 15wt%, and then pour the SIS solution on the surface of the pretreated silicon template, then spin-coat it at 100rpm for 10s, and then place it Dry in a blast oven at 50°C for 3h. The film-forming SIS polymer was slowly peeled off from the sandpaper surface to obtain a microstructured SIS flexible substrate.

[0083] (3) Place the SIS film in a silver trifluoroacetate / ethanol solution with a mass fraction of 15% for 15 minutes, and use a hydrazine hydrate / ethanol solution with a mass fraction of 65% after drying to obtain the SIS film sur...

Embodiment 3

[0086] This embodiment provides a flexible pressure sensor, the preparation method of which includes the following steps (for the preparation flow chart, see figure 1 ):

[0087] (1) The rose petals are cleaned, and then treated with plasma for 5 minutes before use.

[0088] (2) Dissolving the SBS particles in ethyl acetate solvent to configure a solution with a mass fraction of 20wt%, then pouring the SBS solution on the surface of the pretreated rose petals, then spin-coating for 10s at a speed of 100rpm, and then placing Dry in a blast oven at 50°C for 3h. The film-forming SBS polymer was slowly peeled off the surface of rose petals to obtain a microstructured SBS flexible substrate.

[0089] (3) Place the SBS film in a silver trifluoroacetate / ethanol solution with a mass fraction of 10% for 15 minutes, use a hydrazine hydrate / ethanol solution with a mass fraction of 50% after drying, and obtain a compound on the surface of the SBS film through a chemical reduction reacti...

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Abstract

The invention belongs to the technical field of sensors, and relates to a flexible conductive composite film and a preparation method thereof, a flexible pressure sensor and a preparation method thereof. The conductive composite film includes a first base, a first conductive layer, a second conductive layer and a second base that are stacked in sequence; the side of the first base that is in contact with the first conductive layer is a raised structure, and the The first conductive layer is a raised structure; the side of the second substrate in contact with the second conductive layer is a raised structure, and the second conductive layer is a raised structure; the first conductive layer and the second conductive layer face-to-face contact. The pressure sensor using the conductive composite film has the characteristics of high sensitivity, fast response time, good stability and the like. The invention overcomes the disadvantages of high preparation cost and easy falling off of the conductive layer of the flexible sensor, and the preparation method is simple and feasible, and can be mass-produced.

Description

technical field [0001] The invention relates to the technical field of sensors, and relates to a conductive composite film and a preparation method thereof, a pressure sensor and a preparation method thereof, and in particular to a flexible conductive composite film and a preparation method thereof, a flexible pressure sensor and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of industries such as the Internet of Things, wearable electronics, intelligent robots, and health care, flexible electronics technology has received unprecedented attention. Flexible pressure sensor is a very important electronic device for information transmission and collection. It can convert external pressure stimuli into electrical and optical signals that can be directly measured, and reflect the magnitude and distribution of external pressure through these response signals. Because of its excellent Its pressure sensing performance and good...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/16
CPCG01L1/16
Inventor 胡友根熊耀旭沈友康刘学斌朱朋莉孙蓉
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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