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

A flexible conductive and composite film technology, which is applied in the field of conductive composite films and flexible sensors, can solve the problems of flexible sensor sensitivity, poor mechanical tolerance and environmental tolerance, and achieve the effect of improving sensitivity and improving wear resistance

Inactive Publication Date: 2019-06-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a flexible conductive composite film for sensors and its preparation method and flexible sensor, so as to solve the problems of poor sensitivity, mechanical tolerance and environmental tolerance of existing flexible sensors

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0040] The preparation method of the flexible conductive composite film for the sensor of the present embodiment comprises the following steps:

[0041](1) Take 0.2 g of multi-walled carbon nanotubes; place them in 40 ml of N,N-dimethylformamide (abbreviated as DMF) solvent, and then undergo shearing and stirring for 30 min and ultrasonic dispersion for 1 h to obtain uniformly dispersed carbon nanotubes. nanotube dispersion. Take 0.2g of graphene and place it in 40ml of DMF solvent, then shear and stir for 30min, and ultrasonically disperse for 1h to obtain a uniformly dispersed graphene dispersion.

[0042] (2) Preparation of flexible bump array silicone membrane: the template cylinder used has a pore diameter of 100 microns, a depth of 100 microns, and a hole spacing of 125 microns. The silicone precursor solution was uniformly coated on the template, and then cured and stripped at 120° C. for 2 hours to obtain a silicone film with a bump array.

[0043] (3) After the orga...

Embodiment 2

[0047] The preparation method of the flexible conductive composite film for the sensor of the present embodiment comprises the following steps:

[0048] (1) Take 0.6 g of multi-walled carbon nanotubes; place them in 40 ml of DMF solvent, and then undergo shearing and stirring for 30 min and ultrasonic dispersion for 1 h to obtain a uniformly dispersed carbon nanotube dispersion. Take 0.6g of graphene and place it in 40ml of DMF solvent, shear and stir for 30min, and ultrasonically disperse for 1h in turn to obtain a uniformly dispersed graphene dispersion.

[0049] (2) Preparation of flexible bump array organic silica gel membrane: the template cylinder used has a pore diameter of 100 microns, a depth of 100 microns, and a hole spacing of 125 microns. The silicone precursor solution was uniformly coated on the template, and then cured and stripped at 120° C. for 2 hours to obtain a silicone film with a bump array.

[0050] (3) After the organic silica gel membrane is treated ...

Embodiment 3

[0054] The preparation method of the flexible conductive composite film for the sensor of the present embodiment comprises the following steps:

[0055] (1) Take 1 g of multi-walled carbon nanotubes; place them in 40 ml of DMF solvent, and then undergo shearing and stirring for 30 min, and ultrasonic dispersion for 1 h to obtain a uniformly dispersed carbon nanotube dispersion. Take 1 g of graphene and place it in 40 ml of DMF solvent, and then undergo shear stirring for 30 min and ultrasonic dispersion for 1 h to obtain a uniformly dispersed graphene dispersion.

[0056] (2) Preparation of flexible bump array organic silica gel membrane: the template cylinder used has a pore diameter of 100 microns, a depth of 100 microns, and a hole spacing of 125 microns. The silicone precursor solution was uniformly coated on the template, and then cured and stripped at 120° C. for 2 hours to obtain a silicone film with a bump array.

[0057] (3) After the organic silica gel film is treat...

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Abstract

The invention, which belongs to the technical field of conductive composite membranes, discloses a flexible conductive composite film for a sensor and a preparation method thereof, and a flexible sensor. The preparation method comprises the following steps that: organic silica gel membranes having salient point arrays are coated with graphene dispersion liquid and carbon nanotube dispersion liquidrespectively to obtain conductive silica gel membranes; and the sides, having salient point arrays, of the two conductive silica gel membranes are compressed in opposite and thus the coated graphenedispersion liquid and carbon nanotube dispersion liquid are arranged between the two organic silica gel membranes to obtain a flexible conductive composite film. According to the flexible conductive composite film disclosed by the invention, the pressure and the friction force can be sensed and distinguished simultaneously; the sensor has advantages of high sensitivity and good tolerance performance and is not easy to damage; and the preparation process is simple and the cost is low. The continuous mass production is realized.

Description

technical field [0001] The invention relates to the technical field of conductive composite films, and further relates to the field of flexible sensors, in particular to a flexible conductive composite film for sensors, a preparation method thereof and a flexible sensor. Background technique [0002] For a long time sensor technology has become the core technology in the field of modern technology industry. Various sensors such as humidity sensors, temperature sensors, pressure sensors, and displacement sensors have been widely used in industrial production, automobiles, electronics, aerospace and other fields. With the further development of modern technology towards intelligence, the application fields of sensors are further expanded, and their application scenarios are further complicated. For example, the rapid development of wearable electronic technology puts forward new requirements for the multifunctionality of sensors and the flexibility of wearables. Flexible sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01L1/22C08J7/06C08L83/04
Inventor 慕春红黄武桐邢志昊宋远强彭自如冉奥
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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