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Breathable and stretchable nanofiber composite thin film material for friction nano generator and preparation method of breathable and stretchable nanofiber composite thin film material

A technology of nanofibers and composite films, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of restricting the development and application of high-performance devices, low output voltage of triboelectric nanogenerators, and poor air permeability, etc., and achieve good triboelectricity Electric effect, guaranteed stretch-recovery performance, thickness controllable effect

Pending Publication Date: 2021-12-03
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned film materials are dense structures with poor air permeability, which can easily cause problems such as skin allergies when used as wearable devices.
At the same time, EVA and other materials have poor electrophilic properties, and the output voltage of the triboelectric nanogenerator constructed by it is low, which limits the development and application of high-performance devices.

Method used

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  • Breathable and stretchable nanofiber composite thin film material for friction nano generator and preparation method of breathable and stretchable nanofiber composite thin film material
  • Breathable and stretchable nanofiber composite thin film material for friction nano generator and preparation method of breathable and stretchable nanofiber composite thin film material
  • Breathable and stretchable nanofiber composite thin film material for friction nano generator and preparation method of breathable and stretchable nanofiber composite thin film material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Nano fiber composite films, the following steps:

[0037] 1) Weigh 1.5g PVDF-HFP polymer particles, a glass vial was added 20ml; 10ml of acetone was added - dimethylformamide, a mixed solution, wherein the volume ratio of acetone and dimethyl formamide is 6: 4, using a magnetic stirred for 4h to give the sub-stirred solution electrospinning A;

[0038] 2) Weigh 1.2g SEBS elastomer particles, added to a glass vial 20ml; 10ml toluene was added - dimethylformamide mixed solution, wherein the volume ratio of toluene and dimethylformamide for 85:15, using a magnetic stirrer electrospinning solution obtained was stirred for 4h B;

[0039] 3) The solution A and solution B respectively, into two syringes, connected to an electrostatic spinning machine, adjusting electrospinning parameters (voltage -2kV, 20kV) to carry out electrostatic spinning conjugate, wherein the solution A is introduced rate 0.7ml / h, the solution B was introduced rate 2ml / h, to obtain the nanofiber composi...

Embodiment 2

[0041] Nano fiber composite films, the following steps:

[0042] 1) Weigh 1.5g PVDF-HFP polymer particles, a glass vial was added 20ml; 10ml of acetone was added - dimethylformamide, a mixed solution, wherein the volume ratio of acetone and dimethyl formamide is 6: 4, using a magnetic stirred for 4h to give the sub-stirred solution electrospinning A;

[0043] 2) Weigh 1.2g SEBS elastomer particles, added to a glass vial 20ml; 10ml toluene was added - dimethylformamide mixed solution, wherein the volume ratio of toluene and dimethylformamide for 85:15, using a magnetic stirrer electrospinning solution obtained was stirred for 4h B;

[0044] 3) The solution A and solution B respectively, into two syringes, connected to an electrostatic spinning machine, adjusting electrospinning parameters (voltage -2kV, 20kV) to carry out electrostatic spinning conjugate, wherein the solution A is introduced rate 1.1ml / h, the solution B was introduced rate 2ml / h, to obtain the nanofiber composi...

Embodiment 3

[0046] Nano fiber composite films, the following steps:

[0047] 1) Weigh 1.5g PVDF-HFP polymer particles, a glass vial was added 20ml; 10ml of acetone was added - dimethylformamide, a mixed solution, wherein the volume ratio of acetone and dimethyl formamide is 6: 4, using a magnetic stirred for 4h to give the sub-stirred solution electrospinning A;

[0048] 2) Weigh 1.2g SEBS elastomer particles, added to a glass vial 20ml; 10ml toluene was added - dimethylformamide mixed solution, wherein the volume ratio of toluene and dimethylformamide for 15:85, using a magnetic stirrer electrospinning solution obtained was stirred for 4h B;

[0049] 3) The solution A and solution B respectively, into two syringes, connected to an electrostatic spinning machine, adjusting electrospinning parameters (voltage -2kV, 20kV) to carry out electrostatic spinning conjugate, wherein the solution A is introduced rate 1.6ml / h, the solution B was introduced rate 2ml / h, to obtain the nanofiber composi...

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Abstract

The invention discloses a breathable and stretchable nanofiber composite thin film material for a friction nano-generator and a preparation method of the breathable and stretchable nanofiber composite thin film material. The material is formed by blending nanofibers and elastomer microspheres through electrostatic spinning, wherein the nanofibers are polyvinylidene fluoride-hexafluoropropylene copolymer (PVDF-HFP), and the elastomer microspheres are styrene-ethylene-butylene-styrene block copolymer. The preparation method comprises the following steps of (1) dissolving a nanofiber precursor into a solution A for electrostatic spinning; (2) dissolving the elastomer microspheres into a solution B for electrostatic spinning; and (3) spinning the nanofibers and the elastomer microspheres synchronously by adopting a conjugate electrostatic spinning processing technology to obtain a nanofiber composite thin film. The nanofiber composite thin film material prepared by the invention has the advantages of adjustable thickness, air permeability, waterproofness and stretchability, has a good triboelectrification effect, is simple in preparation method and suitable for industrial production, and can be applied to the breathable and stretchable wearable friction nano-generator.

Description

Technical field [0001] The present invention is in the field of flexible electronics, and particularly relates to a gas-permeable friction nanometers generator nanofiber composite membrane and a preparation method stretchable. Background technique [0002] Nano friction can be collected in the form of a low-frequency generator of mechanical vibration, liquid flow, mechanical energy biokinematic the like, and converts it into electrical energy, has wide application prospect in the field of wearable electronics. For wearable electronic device in terms of flexibility, having a breathable, stretchable, water and other characteristics are desired in the art of engineering applications; the same time, the flexible stretchable material for the friction applied to nano-generators scene, which should be located frictional sequence list of negative or positive polarity across the location, i.e., a sufficiently low surface energy, easily triboelectrically. [0003] Currently, the generator ...

Claims

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Application Information

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IPC IPC(8): D04H1/728D04H1/4382D04H1/4318D04H1/4291
CPCD04H1/728D04H1/43838D04H1/43825D04H1/4291D04H1/4318
Inventor 李祎肖淞吴豪颖唐炬潘成张晓星
Owner WUHAN UNIV
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