Integrated flexible sensor based on sandwich type spinning film and manufacturing method

A flexible sensor, sandwich-type technology, applied in nanotechnology for sensing, transmission of sensing components using electromagnetic/magnetic devices, nanotechnology, etc., can solve the complex preparation process, poor conductivity, and poor mechanical properties of the sensor and other problems, to achieve the effect of simple process, low equipment requirements, and improved mechanical properties

Pending Publication Date: 2021-06-08
XIAN TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of integrated flexible sensor and manufacturing method based on sandwich-type spun film, which overcomes the poor mechanical properties, poor electrical conductivity and poor preparation process of sensors made of metal and semiconductor materials existing in the prior art. Complicated problems, the process method of the present invention is simple and stable, and effectively solves the problems of conductivity and tensile strength applied to films of flexible electronic devices

Method used

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  • Integrated flexible sensor based on sandwich type spinning film and manufacturing method
  • Integrated flexible sensor based on sandwich type spinning film and manufacturing method
  • Integrated flexible sensor based on sandwich type spinning film and manufacturing method

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preparation example Construction

[0032] The invention is a method for preparing an integrated flexible sensor, comprising the following steps:

[0033] (1) Preparation of few-layer MXene and silver nanowires: two conductive components were prepared by acid etching method and hydrothermal method, respectively.

[0034] (2) Preparation of flexible matrix liquid: use tetrahydrofuran (THF) and dimethyl sulfoxide (DMSO) with a volume ratio of 1:1 to 1.5:1 as the dissolution medium, and the flexible matrix material is thermoplastic polyurethane (TPU), polylactic acid (PLA), polycaprolactone (PCL), etc., were stirred at 55° C. for 3 hours to obtain a flexible matrix liquid with a mass fraction of 12%-14%.

[0035](3) Preparation of the spinning precursor suspension: firstly, the dimethyl sulfoxide (DMSO)-alcohol mixed system with a volume ratio of 1:0.01-1:0.05 was used as the dispersion medium, and the MXene and silver nanowires were mixed and ground, and then Mix with a dispersant and ultrasonicate for 2 hours at...

Embodiment 1

[0037] Example 1: Preparation of an integrated flexible sensor

[0038] (1) Preparation of few-layer MXene and silver nanowires

[0039] First prepare few-layer MXene, add 1g lithium fluoride to 10mL 9mol / L hydrochloric acid solution, then slowly add 1gTi 3 AlC 2 Powder (3 C 2 T x or Ti 3 C 2 T x clay. Then prepare silver nanowires, add 5ml 0.02M AgNO3 and 5ml 0.02M NaCl into 30ml distilled water, stir to form AgCl colloid, then dissolve 0.04g 0.2mol glucose in the above colloid solution, and move it into the hydrothermal synthesis reaction kettle , kept in a heating furnace at 180°C for 18 hours, cooled to room temperature in the air, filtered and placed in a vacuum dryer (30°C) for 3 hours, and rinsed with alcohol to remove the silver precipitate (silver nanowires).

[0040] (2) Preparation of flexible matrix liquid

[0041] Tetrahydrofuran (DHF) and dimethyl sulfoxide (DMSO) were used to form a mixed solvent system at a volume ratio of 1:1, and 2.4 g of TPU was add...

Embodiment 2

[0047] Example 2: Preparation of an integrated flexible sensor

[0048] (1) Preparation of few-layer MXene and silver nanowires

[0049] First prepare few-layer MXene, add 1g lithium fluoride to 10mL 9mol / L hydrochloric acid solution, then slowly add 1gTi 3 AlC 2 Powder (3 C 2 T x or Ti 3 C 2 T x clay. Then prepare silver nanowires, add 5ml 0.02M AgNO3 and 5ml 0.02M NaCl into 30ml distilled water, stir to form AgCl colloid, then dissolve 0.04g 0.2mol glucose in the above colloid solution, and move it into the hydrothermal synthesis reaction kettle , kept in a heating furnace at 180°C for 18 hours, cooled to room temperature in the air, filtered and placed in a vacuum dryer (30°C) for 3 hours, and rinsed with alcohol to remove the silver precipitate (silver nanowires).

[0050] (2) Preparation of flexible matrix liquid

[0051] Tetrahydrofuran (DHF) and dimethyl sulfoxide (DMSO) were used to form a mixed solvent system with a volume ratio of 1.2:1, and 2.4g of PCL was ...

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Abstract

The invention relates to an integrated flexible sensor based on a sandwich type electrostatic spinning film and a manufacturing method. The integrated flexible sensor solves problems that in the prior art, sensors produced from metal and semiconductor materials are poor in flexibility and complex in production process. The integrated flexible sensor is made of the flexible composite material, the flexibility is good, and the production process is simple. The sensor comprises an upper conductive layer and a lower conductive layer, an insulating layer is arranged between the upper conductive layer and the lower conductive layer, the upper conductive layer, the lower conductive layer and the insulating layer adopt a composite film, the composite film comprises a flexible substrate, and MXene and silver nanowires as conductive components are dispersed in the flexible substrate of the upper conductive layer and the lower conductive layer. And at least one electrode is led out from the surfaces of the upper conducting layer and the lower conducting layer. The manufacturing method comprises the following steps: (1) preparing MXene and silver nanowires; (2) preparing a flexible matrix liquid; (3) preparing an electrostatic spinning precursor solution and performing electrostatic spinning; and (4) assembling the sandwich type integrated flexible sensor.

Description

Technical field: [0001] The invention belongs to the technical field of multifunctional thin film materials and device construction, and relates to an integrated flexible sensor based on a sandwich spinning film and a manufacturing method, which can be widely used in the fields of flexible electronics, wearable devices, man-machine interfaces, flexible robots, etc. . Background technique: [0002] In recent years, with the rapid development of flexible electronic materials and sensing technologies, wearable flexible sensors have developed very rapidly. Flexible sensors convert target signals into electrical signals in a special way, and have great potential in human health monitoring, biomedicine, and flexible electronic skin. Sensors made of traditional metal and semiconductor materials often have disadvantages such as poor mechanical properties and poor electrical conductivity, which restrict their application, while flexible sensors have the advantages of good flexibilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/24B82Y15/00B82Y40/00
CPCG01D5/24B82Y15/00B82Y40/00
Inventor 周宏伟杜浩田金洗郎陈卫星
Owner XIAN TECH UNIV
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