Intelligent magnetic drive self-repairing flexible pressure sensor and preparation method therefor

A pressure-sensitive sensor, self-healing technology, applied in the field of smart sensors, to achieve the effects of superior magnetic properties, excellent formability, and excellent self-healing properties

Active Publication Date: 2017-07-21
苏州纳赢电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is how to overcome the defects that the existing flexible self-repairing pressure-sensitive sensors require external organic reagents, high heat energy, and human intervention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The invention provides an intelligent magnetically driven self-repairing flexible pressure sensitive sensor and a preparation method thereof, comprising the following steps:

[0040] 1) Preparation of one-dimensional silver nanowire material

[0041]a) Ethylene glycol pretreatment: Add 50 mL of ethylene glycol into a three-necked flask and fully heat at 150°C for 10 minutes;

[0042] b) Add 1 mL of NaCl aqueous solution into the solution of a) and heat for 10 minutes; the concentration of NaCl aqueous solution is 0.002mol / L;

[0043] c) Dissolve 10 g of silver nitrate in ethylene glycol to form a 0.3 mol / L silver nitrate solution; dissolve 15 g of polyvinylpyrrolidone (PVP) in ethylene glycol to form a 0.4 mol / L PVP solution; Take 10 mL of silver nitrate solution and add it to the mixed solution b), and at the same time, take 30 mL of PVP solution and drop it slowly through the peristaltic pump, and the time is controlled within 50 minutes;

[0044] d) After the dropw...

Embodiment 2

[0061] The invention provides an intelligent magnetically driven self-repairing flexible pressure sensitive sensor and a preparation method thereof, comprising the following steps:

[0062] 1) Preparation of one-dimensional silver nanowire material

[0063] a) Ethylene glycol pretreatment: Add 65 mL of ethylene glycol into a three-necked flask and fully heat at 155°C for 15 minutes;

[0064] b) Add 1.5 mL of NaCl aqueous solution into the solution of a) and heat for 10 minutes; the concentration of NaCl aqueous solution is 0.0025mol / L;

[0065] c) Dissolve 15 g of silver nitrate in ethylene glycol to form a 0.35 mol / L silver nitrate solution; dissolve 12 g of polyvinylpyrrolidone (PVP) in ethylene glycol to form a 0.45 mol / L PVP solution; Take 12 mL of silver nitrate solution and add it to the mixed solution b), and at the same time, take 34 mL of PVP solution and drop it slowly through the peristaltic pump, and the time is controlled within 60 minutes;

[0066] d) After the...

Embodiment 3

[0083] The invention provides an intelligent magnetically driven self-repairing flexible pressure sensitive sensor and a preparation method thereof, comprising the following steps:

[0084] 1) Preparation of one-dimensional silver nanowire material

[0085] a) Ethylene glycol pretreatment: Add 70 mL of ethylene glycol into a three-necked flask and fully heat at 160°C for 20 minutes;

[0086] b) Add 2 mL of NaCl aqueous solution into the solution of a) and heat for 12 minutes; the concentration of NaCl aqueous solution is 0.003mol / L;

[0087] c) Dissolve 8 g of silver nitrate in ethylene glycol to form a 0.4 mol / L silver nitrate solution; dissolve 18 g of polyvinylpyrrolidone (PVP) in ethylene glycol to form a 0.5 mol / L PVP solution; Add 15 mL of silver nitrate solution to the mixed solution b), and at the same time, slowly drop in 35 mL of PVP solution through a peristaltic pump, and the time is controlled within 70 minutes;

[0088] d) After the dropwise addition, the above...

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Abstract

The invention discloses an intelligent magnetic drive self-repairing flexible pressure sensor and a preparation method therefor. According to the scheme of the invention, the method comprises the steps: preparing a silver nanowire and linear needle-shaped magnetic nickel; forming a high-molecular base material with a self-repairing function through combination; mixing the silver nanowire and linear needle-shaped magnetic nickel, adding the mixture to the base material, and carrying out the crosslinking, solidifying and film forming; packaging a self-repairing flexible film, placing the self-repairing flexible film into a magnetic field for magnetizing orientation, and obtaining the intelligent magnetic drive self-repairing flexible pressure sensor. The method is advantageous in that 1, the silver nanowire and linear needle-shaped magnetic nickel are compounded, the linear needle-shaped structure can be effectively configured with the silver nanowire, and a conduction circuit is more effective; 2, the magnetic drive self-repairing flexible pressure sensor employs a dimer acid as a monomer unit, thereby enabling a prepared self-repairing flexible film to be excellent in mechanical performance; 3, the magnetic field is applied to the die, thereby enabling the anisotropic magnetic nickel to be oriented in the high-molecular base material, and achieving the intelligent magnetic drive.

Description

technical field [0001] The invention relates to an intelligent sensor, in particular to an intelligent magnetically driven self-repairing flexible pressure sensitive sensor and a preparation method thereof. Background technique [0002] In recent years, with the development of materials science and flexible electronics, electronic skin and flexible sensor devices have shown great application potential in medical health, military, aerospace, consumer electronics and other industrial fields. Therefore, the use of different materials to prepare new types of flexible pressure-sensitive sensors with unique structures, high sensitivity, and good mechanical properties has attracted extensive attention from researchers at home and abroad, and has gradually become an important frontier hotspot. [0003] Pressure sensitive sensor, also known as pressure sensor, is a sensor that is sensitive to external pressure and is widely used in electronic devices, wearable equipment, robots and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/12G01L9/16C08L77/08C08K7/06C08K3/08C08G69/34C08J5/18
Inventor 沈伟赵博文杜逸纯周兴王丽丽曹丰宋冠宇刘涵汤强王俊壹
Owner 苏州纳赢电子材料科技有限公司
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