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A sandwich-type large-area high-density flexible array sensor and its preparation method

A sandwich-type, flexible array technology, applied in the field of sensors, can solve the problems of large pressure sensing range, low material utilization rate, and high production cost, and achieve the effect of increasing the pressure sensing range, uniform and smooth film thickness, and improving packaging efficiency.

Active Publication Date: 2021-11-09
SHAOXING UNIV YUANPEI COLLEGE
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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 overcome the low utilization rate of materials and high production cost in the preparation of large-area flexible sensors by traditional photolithography technology in the prior art, and when large-area integration, if the array density is high, the efficiency will be too low, and the preparation For the problem of excessive difficulty, provide a sandwich type large-area high-density flexible array sensor and its preparation method, which is prepared by a full screen printing process, with simple process, high efficiency, and low cost, and the prepared large-area high-density flexible array sensor The array sensor has high sensitivity, good stability and large pressure sensing range

Method used

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  • A sandwich-type large-area high-density flexible array sensor and its preparation method
  • A sandwich-type large-area high-density flexible array sensor and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Preparation of polar plates: Use 420-mesh steel mesh plate to print Youtexin ID01 type conductive silver paste on two PET substrates by screen printing process, and form corresponding array electrodes and wires on the two PET substrates , after printing, place it in a blast oven and dry it at 120°C for 40 minutes to prepare the upper and lower plates;

[0048] Preparation of pressure-sensitive composite materials: 20g Ketjen black ECP600JD, 5g carbon nanotubes, 5g nano-SiO 2 and 10g of 2% silane coupling agent Si-69, added to 85g of naphtha, stirred and ultrasonically dispersed for 30 minutes to form a dispersion, added 350g of room temperature vulcanized silicone rubber Dow Corning 184 to the dispersion, stirred magnetically at room temperature for 3 hours to form a viscous Mixed solution, place the mixed solution in a vacuum drying oven at 40°C to dry for 20 minutes, remove air bubbles and incompletely volatilized naphtha, and obtain an uncured pressure-sensitive comp...

Embodiment 2

[0052] Preparation of polar plates: Use 300-mesh polyester screen to print Youtexin ID01 type conductive silver paste on two PET substrates by screen printing process, and form corresponding array electrodes and electrodes on the two PET substrates. Lead wires, after printing, place them in a blast oven and dry them at 140°C for 60 minutes to make upper and lower plates;

[0053] Preparation of pressure-sensitive composite materials: 75g Ketjen carbon black ECP600JD, 25g carbon nanotubes, 20g nano-SiO 2 And 40g of 2% silane coupling agent Si-69, add 25g of n-hexane, 65g of naphtha and 25g of absolute ethanol mixed solution, after stirring, ultrasonically disperse for 60min to form a dispersion, add 450g of room temperature vulcanized silicon to the dispersion Rubber Dow Corning 184, stirred magnetically at room temperature for 8 hours to form a viscous mixture, and dried the mixture in a vacuum drying oven at 100°C for 30 minutes to remove air bubbles and incompletely volatili...

Embodiment 3

[0057] Preparation of polar plates: Use 400-mesh polyester screen to print Youtexin ID01 conductive silver paste on two PET substrates by screen printing process, and form corresponding array electrodes and electrodes on the two PET substrates. Lead wires, after printing, place them in a blast oven and dry them at 130°C for 50 minutes to make upper and lower plates;

[0058] Preparation of pressure-sensitive composite materials: 50g Ketjen carbon black ECP600JD, 10g carbon nanotubes, 15g nano-SiO 2 And 30g of 2% silane coupling agent Si-69, add 70g of naphtha and 30g of absolute ethanol mixed solution, after stirring, ultrasonically disperse for 40min to form a dispersion, add 400g of room temperature vulcanized silicone rubber Dow Corning 184 to the dispersion, Stir magnetically at room temperature for 6 hours to form a viscous mixed solution, place the mixed solution in a vacuum drying oven at 70°C and dry for 25 minutes to remove air bubbles and incompletely volatilized nap...

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Abstract

The invention relates to the field of sensors, and discloses a sandwich-type large-area high-density flexible array sensor and a preparation method thereof. The sensor includes an upper plate, a lower plate, and an array pressure-sensitive layer and an insulating adhesive layer arranged between the upper and lower plates. , the upper and lower plates are provided with corresponding array electrodes and wires, the array electrodes have a row-column structure, each row of electrodes is connected by wires, and the position of the insulating adhesive layer corresponding to the pressure-sensitive layer of the array is hollowed out. The preparation method includes the following steps : The upper and lower pole plates are prepared by screen printing; the pressure-sensitive composite material is prepared; the uncured pressure-sensitive composite material is printed on the array electrodes on one of the pole plates by the screen printing process to form an array pressure-sensitive layer; Bond the upper and lower plates with insulating glue. The invention has simple process, high efficiency and low cost, and the prepared large-area high-density flexible array sensor has high sensitivity, good stability and large pressure sensing range.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a sandwich-type large-area high-density flexible array sensor and a preparation method thereof. Background technique [0002] With the improvement of science and technology and modernization level, people have higher and higher requirements for pressure monitoring. It is no longer limited to pressure monitoring on regular rigid surfaces, and there are various forms. Ordinary rigid sensors can no longer meet people's actual needs. . Flexible pressure sensors can be bent or even folded at will, small in size, thin in thickness, flexible materials are basically non-toxic and harmless, and have good compatibility with the human body. A lot of research and application have been done. [0003] In recent years, with the rapid development of robotic bionic skin, flexible wearable devices and other fields, people's demand for large-area and high-density flexible sensor arrays has continued to inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/18G01L9/06B82Y30/00C08L83/04C08L91/00C08K13/02C08K3/04C08K3/36
CPCB82Y30/00C08K3/04C08K3/36C08K13/02C08K2201/001C08K2201/011C08L83/04C08L91/00G01L1/18G01L9/06C08K3/041
Inventor 徐志望
Owner SHAOXING UNIV YUANPEI COLLEGE
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