Flexible piezoelectric nanofiber membrane and preparation method and application thereof

A nanofiber membrane, flexible piezoelectric technology, applied in the field of piezoelectricity, can solve the problems of not being able to meet the use requirements of piezoelectric sensors, poor electrical performance output, etc. low cost to manufacture

Active Publication Date: 2018-07-06
四川易尚天交实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the main problem in the piezoelectric performance of PVDF materials is that the electrical performance output is relatively poor, which cannot well meet the needs of piezoelectric sensors.

Method used

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  • Flexible piezoelectric nanofiber membrane and preparation method and application thereof
  • Flexible piezoelectric nanofiber membrane and preparation method and application thereof
  • Flexible piezoelectric nanofiber membrane and preparation method and application thereof

Examples

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preparation example Construction

[0023] A method for preparing a flexible piezoelectric nanofiber membrane provided by an embodiment of the present invention comprises the following steps:

[0024] S1. After mixing and stirring the dimethyl sulfoxide solution of zinc acetate and the ethanol solution of tetramethylammonium hydroxide in sequence, add ethyl acetate to precipitate nanoparticles, add ethanolamine to stabilize the nanoparticles, and then centrifuge to separate ZnO nanoparticles, and dry the ZnO nanoparticles.

[0025] Further, in the process of preparing ZnO nanoparticles, the dosage ratio of zinc acetate and tetramethylammonium hydroxide is 3mmol:5.5mmol, and the dosage of ethyl acetate is 40mL. It should be noted that the reason why ethyl acetate is added and its amount is limited is to ensure that the expected target ZnO nanoparticles can be obtained, so that the final particle size of ZnO nanoparticles can also meet the expected requirements.

[0026] Further, in the embodiment of the present ...

Embodiment 1

[0044] This embodiment provides a method for preparing a flexible piezoelectric nanofiber membrane, the preparation process comprising:

[0045] Preparation of ZnO nanoparticles: Mix a solution of zinc acetate (3mmol) in dimethyl sulfoxide (DMSO 30mL) with a solution of tetramethylammonium hydroxide (TMAH 5.5mmol) in ethanol (10mL), stir for 24h, then add ethyl acetate (40mL) will precipitate ZnO nanoparticles, add ethanolamine (160μL) to stabilize the nanoparticles, separate the ZnO nanoparticles with a centrifuge (10000 rpm), and dry them in an oven at 40°C to obtain 30nm microspheres particles.

[0046] Configuration of PVDF solution: Dissolve PVDF in a mixed solution of acetone and dimethylacetamide (DMAc), wherein the volume ratio of acetone and DMAc is 5:7, and the mass fraction of PVDF is 25%.

[0047] Preparation of ZnO / PVDF mixed solution: the above-prepared ZnO nanoparticles were first dissolved in acetone and DMAc solution, then the above-prepared PVDF solution was...

Embodiment 2

[0052] This embodiment provides a method for preparing a flexible piezoelectric nanofiber membrane, the preparation process comprising:

[0053] Preparation of ZnO nanoparticles: Mix a solution of zinc acetate (3mmol) in dimethyl sulfoxide (DMSO 30mL) with a solution of tetramethylammonium hydroxide (TMAH 5.5mmol) in ethanol (10mL), stir for 24h, then add ethyl acetate (40mL) will precipitate ZnO nanoparticles, add ethanolamine (160μL) to stabilize the nanoparticles, separate the ZnO nanoparticles with a centrifuge (10010 rpm), and dry them in an oven at 40°C to obtain 32nm microspheres particles.

[0054] Configuration of PVDF solution: Dissolve PVDF in a mixed solution of acetone and dimethylacetamide (DMAc), wherein the volume ratio of acetone and DMAc is 5:7, and the mass fraction of PVDF is 28%.

[0055] Preparation of ZnO / PVDF mixed solution: the above-prepared ZnO nanoparticles were first dissolved in a solution of acetone and DMAc, then the above-prepared PVDF solutio...

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Abstract

A flexible piezoelectric nanofiber membrane and a preparation method and application thereof are mainly related to the field of piezoelectricity. The preparation method of the flexible piezoelectric nanofiber membrane dopes ZnO nanoparticle-modified PVDF (polyvinylidene fluoride) fiber to the PVDF fiber by means of electrostatic spinning, so that the piezoelectric performance of the final flexiblepiezoelectric nanofiber membrane is improved; the preparation method is novel and simple and low in manufacture cost and is easy to popularize and apply. Therefore, the flexible piezoelectric nanofiber membrane and the preparation method thereof have the advantages that the preparation process is simple, the cost is low, large-scale preparation is easy to implement, the prepared flexible piezoelectric nanofiber membrane has good piezoelectric performance, a piezoelectric device (application of the flexible piezoelectric nanofiber membrane) has better electrical performance output, and accordingly, the flexible piezoelectric nanofiber membrane and the preparation method and application thereof have great popularization and application value and have a promising application prospect.

Description

technical field [0001] The invention relates to the field of piezoelectricity, in particular to a flexible piezoelectric nanofiber membrane and its preparation method and application. Background technique [0002] The consumption and demand for energy in modern society is increasing, and the traditional fossil energy oil and coal are becoming limited. Therefore, a new clean energy source needs to be developed to overcome this energy demand. Piezoelectric materials are crystalline materials that generate a voltage between their two ends when subjected to pressure, converting mechanical energy into electrical energy. [0003] Conventional piezoelectric materials or ceramic materials have been widely used to harvest energy from mechanical energy, but the low flexibility and high weight issues of this ceramic limit its application in different fields, compared to inorganic materials, PVDF is chemically stable High resistance, acid and alkali corrosion resistance, good bending ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/4318D01F1/10H01L41/37H01L41/18H01L41/113
CPCD01F1/10D04H1/4318D04H1/728H10N30/852H10N30/302H10N30/092
Inventor 邓维礼杨维清杨涛闫成靳龙熊达赵凡漪
Owner 四川易尚天交实业有限公司
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