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Preparation method of wearable friction generator based on flexible PU/PVDF composite nanofiber yarn

A composite nanofiber and friction generator technology, which is applied in the field of friction generator preparation and nanofiber materials, can solve the problems of small capacity, large volume, heavy quality, etc., and achieve high surface charge density, high specific surface area, and reliable principle Effect

Active Publication Date: 2020-05-15
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the mobile power sources used by people are batteries, which can be moved, but the shortcomings of small capacity, large volume and heavy quality cannot be ignored.

Method used

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  • Preparation method of wearable friction generator based on flexible PU/PVDF composite nanofiber yarn
  • Preparation method of wearable friction generator based on flexible PU/PVDF composite nanofiber yarn
  • Preparation method of wearable friction generator based on flexible PU/PVDF composite nanofiber yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation method of the friction generator of the flexible PU / PVDF composite nanofiber yarn of the present embodiment is as follows:

[0039] (1) Put the elastic filament into the DT-03S low-temperature plasma treatment apparatus and carry out surface modification treatment for 45 minutes under the condition of discharge power of 150W to make it have a rough surface microstructure, and to coat the conductive solution for the next step prepare.

[0040] (2) Add the CNT powder into the toluene solvent, and carry out strong ultrasonic treatment under normal temperature and sealed conditions to obtain a uniformly dispersed CNT dispersion; then add the elastic polymer Parafilm film, and magnetically stir at 60°C for 6 hours to obtain a uniform CNT / Elastic polymer conductive dispersion; the solute (CNT and elastic polymer) accounts for 7% of the total mass of the solution, and CNT accounts for 15% of the solute mass.

[0041] (3) Using the method of physical coating, ...

Embodiment 2

[0052] The preparation method of the friction generator of the flexible PU / PVDF composite nanofiber yarn of the present embodiment is as follows:

[0053] (1) Put the elastic filament into the DT-03S low-temperature plasma treatment apparatus and perform surface modification treatment for 50 minutes under the discharge power of 160W to make it have a rough surface microstructure, which is used for coating the conductive solution in the next step prepare.

[0054] (2) Add the CNT powder into the toluene solvent, and perform a strong ultrasonic treatment under normal temperature and sealed conditions to obtain a uniformly dispersed CNT dispersion; then add elastic polymer polyurethane and magnetically stir at 70°C for 5 hours to obtain a uniform CNT / elastic Conductive polymer dispersion; the solute (CNT and elastic polymer) accounts for 8% of the total mass of the solution, and the CNT accounts for 20% of the solute mass.

[0055] (3) Using the method of physical coating, the s...

Embodiment 3

[0065] The preparation method of the friction generator of the flexible PU / PVDF composite nanofiber yarn of the present embodiment is as follows:

[0066] (1) Put the elastic filament into the DT-03S low-temperature plasma treatment apparatus and carry out surface modification treatment under the condition of discharge power of 170W for 60 minutes to make it have a rough surface microstructure, and to coat the conductive solution for the next step prepare.

[0067] (2) Add the CNT powder to the toluene solvent, and perform a strong ultrasonic treatment under normal temperature and sealed conditions to obtain a uniformly dispersed CNT dispersion; then add the elastic polymer polyurethane and magnetically stir at 75°C for 6 hours to obtain a uniform CNT / elastic Conductive polymer dispersion; the solute (CNT and elastic polymer) accounts for 9% of the total mass of the solution, and the CNT accounts for 25% of the solute mass.

[0068] (3) Using the method of physical coating, t...

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Abstract

The invention discloses a preparation method of a wearable friction generator based on flexible PU / PVDF composite nanofiber yarn. A unique double-layer coaxial structure is adopted, elastic conductivecore yarn is used as stretchable elastic core yarn, the surface of core yarn is sequentially coated with PVDF and PU nanofiber layers through conjugate electrostatic spinning, a certain gap structureis constructed between the two layers of nanofibers by coating a water-soluble material, and the friction generator of the PU / PVDF composite nanofiber yarn with the double-layer coaxial structure ismanufactured. According to the friction generator, low-frequency kinetic energy is collected and converted into electric energy through contact separation and electrostatic induction between the PU nano fiber layer and the PVDF nano fiber layer in a stretched or pressed state, due to the fact that the nanofibers have the advantages of being high in specific surface area and superfine in size, theeffective contact area between the PU nanofiber layer and the PVDF nanofiber layer is maximized, the surface charge density is improved, and the output performance of the wearable friction generator is remarkably improved.

Description

technical field [0001] The invention belongs to the field of nanofiber materials, and relates to the research of a friction generator based on flexible PU / PVDF composite nanofiber yarn, in particular to a double-layer coaxial structure prepared by using physical coating and conjugate electrostatic spinning technology. Flexible composite nanofiber yarns for wearable triboelectric generators. Specifically, it belongs to the field of friction generator preparation. Background technique [0002] In recent years, with the rapid development of information, the previous energy sources such as oil and coal can no longer meet the existing requirements. Energy and environmental issues are also constantly affecting the economic development of various countries. As a big country that consumes and produces energy and a country that uses coal and other fossil fuels as its main energy source, China is facing various energy crises and environmental pollution all the time. The development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N1/04D06M10/06D06M10/10D06M15/53D01D5/00D02G3/04D02G3/32D06M101/22
CPCH02N1/04D06M10/06D06M10/10D06M15/53D01D5/003D01D5/0084D02G3/04D02G3/328D10B2321/042D10B2331/10D06M2101/22
Inventor 齐琨陶雪姣邵伟力何建新刘凡周玉嫚佑晓露李方翁凯张景李梦营
Owner ZHONGYUAN ENGINEERING COLLEGE
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