Bio-based all-fiber self-powered multifunctional electronic skin and preparation method thereof

An electronic skin, self-powered technology, applied in the direction of fiber chemical characteristics, conductive/antistatic filament manufacturing, conjugated synthetic polymer artificial filament, etc., can solve the problem of incomplete use of multifunctional electronic skin, complicated production process, expensive Manufacturing and other issues, to achieve the effect of humidity and temperature sensitivity and good detection range, high air permeability, excellent pressure

Pending Publication Date: 2022-03-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach often requires etching or mold inversion, resulting in a complicated production process and expensive fabrication
In addition, since the pollution caused by battery electrolyte

Method used

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  • Bio-based all-fiber self-powered multifunctional electronic skin and preparation method thereof
  • Bio-based all-fiber self-powered multifunctional electronic skin and preparation method thereof
  • Bio-based all-fiber self-powered multifunctional electronic skin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0065] Example one

[0066] (1) Preparation of polyvinyl alcohol / polyvinylfluoroethylene negative friction layer: polyvinyl alcohol dissolves in deionized water at 80 ° C, stirring 3 h, and concentration of 18 wt%. 1 wt% of polyvinylidene fluoride powder was added, and 10 h was stirred, and the uniform dispersion of 19 wt% polyvinyl alcohol / polyvinylidene alcohol / polyvinylidene. The copper net is fixed to the collector of the needle 10 cm, and is uniformly covered by polyvinyl alcohol / polyvinylidene fluoride nanofibers. The electrospinning machine is maintained under certain spinning conditions during the working process, and the feed rate is 1 ml h. –1 . Finally, the sample was placed in an oven at 30 ° C for 6 h to remove the residual solvent.

[0067] (2) Preparation of collagen aggregate positive friction layer and assembly of self-generating pressure sensitive layers: 5 wt% collagen aggregate dissolved in hexafluoroprophane, stirred at 30 ° C for 40 min. Electrostatic...

Example Embodiment

[0071] Example 2

[0072] (1) Preparation of polyvinyl alcohol / polyvinyl fluoride negative friction layer: polyvinyl alcohol dissolves in deionized water at 90 ° C, stirred 5 h, and concentration of 9 wt%. 9 wt% polyvinylidene fluoride was added, stirred for 20 h, and 18 wt% of polyvinyl alcohol / polyvinylidene fluoride was prepared. The copper net is fixed to the collector of the needle 15 cm, and is uniformly covered by polyvinyl alcohol / polyvinylidene fluoride nanofibers. The electrospinning machine is maintained under certain spinning conditions during the working process, and the feed rate is 1.5 ml. –1 . Finally, the sample was placed in an oven of 50 ° C to dry 3 h to remove the residual solvent.

[0073] (2) Preparation of collagen aggregate positive friction layer and assembly of the generated pressure sensitive layer: 10 wt% collagen aggregate dissolved in hexafluoropropyl alcohol, stirred at 40 ° C for 30 min. Electrostatic spinning in a certain environmental condi...

Example Embodiment

[0077] Example three

[0078] (1) Preparation of polyvinyl alcohol / polyvinyl fluoride negative friction layer: Polyvinyl alcohol dissolves in 100 ° C deionized water, stirring 1 h, and concentration of 1 wt%. Further, 17 wt% polyvinylidene fluoride powder was added, stirred from 10 to 30 h, and the uniform dispersion of 18 wt% polyvinyl alcohol / polyvinylidene fluoride was prepared. The copper web is fixed to the collector of the needle 20 cm, and is uniformly covered by polyvinyl alcohol / polyvinylidene fluoride nanofibers. Electrostatic spinning machine remains in a certain spinning condition during operation, the feed rate is 2 ml ∙ h –1 . Finally, the sample was placed in an oven at 70 ° C for 1 h to remove the residual solvent.

[0079] (2) Preparation of collagen aggregate positive friction layer and assembly of the generated pressure sensitive layer: 18 wt% collagen aggregate dissolved in hexafluoropropyl alcohol, stirred at 50 ° C for 10 min. Electrostatic spinning in ...

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Abstract

According to the bio-based all-fiber self-powered multifunctional electronic skin and the preparation method thereof, the bio-inspiration type multifunctional electronic skin with multiple layers of nanofibers is constructed based on a triboelectricity generator, and the bio-inspiration type multifunctional electronic skin can convert mechanical energy of a human body into electric energy and is used for detecting external stimulation such as pressure, temperature and humidity at the same time. A negative friction layer of the electronic skin is made of polyvinyl alcohol/polyvinylidene fluoride composite nanofibers obtained through the electrostatic spinning technology and has a typical three-dimensional network space structure and a microscopic bead chain structure, a positive electrode layer is made of collagen aggregate nanofibers obtained through the electrostatic spinning technology, and the collagen aggregate nanofibers are of a three-dimensional porous structure and a microscopic protruding structure. The electronic skin simultaneously realizes excellent pressure, humidity and temperature responsiveness, integrates the advantages of intelligence, multiple functions, flexibility, sensitivity, air permeability, biocompatibility and the like, and can be used as intelligent electronic skin in the fields of intelligent robots, skin, medical health detection and the like.

Description

technical field [0001] The invention relates to the technical field of electronic skin manufacturing, in particular to a bio-based full-fiber self-powered multifunctional electronic skin and a preparation method thereof. Background technique [0002] As the human body, the skin is the most suitable for the above-mentioned problems. It can realize self-power supply function by generating electricity through nano-triboelectric generators. Electronic skin that is multifunctional and sensitive to multiple stimuli. In addition, in order to make the electronic skin have a good physiological experience and wearing comfort when it is attached to the skin surface, easily degradable biomaterials such as collagen can be used to provide good biocompatibility. At the same time, electrospinning technology is used to prepare nanofibers. The structure realizes its good air permeability. Based on the above characteristics, the electronic skin can be widely used in medical and wearable devic...

Claims

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Application Information

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IPC IPC(8): A61B5/11A61B5/00D01F4/00D01F1/09D01F8/10G01D21/02
CPCA61B5/6802A61B5/1118G01D21/02D01F8/10D01F4/00D01F1/09D01D1/02D01F6/50D01F6/48D01D5/0038D01F1/10G01K13/00A61B5/01A61B5/441G01L1/005A61F2/105A61F2240/001A61B2560/0242A61L27/60G01L1/18
Inventor 王学川岳欧阳刘新华侯梦迪郑漫辉吕丽红
Owner SHAANXI UNIV OF SCI & TECH
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