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Piezoelectric polymer/metal composite nano-filament and preparation method thereof

A piezoelectric polymer and metal composite technology, applied in the direction of conjugated synthetic polymer artificial filament, fiber treatment, fiber chemical characteristics, etc., can solve the problems of poor biocompatibility, poor plasticity, etc., achieve high development prospects, improve The effect of refinement and power generation efficiency

Inactive Publication Date: 2015-07-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the common piezoelectric materials are mainly divided into three categories: piezoelectric ceramics, piezoelectric semiconductors and piezoelectric polymers. The first two types of piezoelectric materials are inorganic materials, which have the characteristics of high piezoelectric efficiency and stable performance, but their shortcomings are also Obviously, poor plasticity, poor biocompatibility, some also contain toxic substances such as heavy metals, so they cannot be widely used in various fields

Method used

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  • Piezoelectric polymer/metal composite nano-filament and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 100 μmol of ferric chloride hexahydrate, dissolve it in a compound solution of 10.8g DMF and 7.2g acetone, and dissolve it completely; then weigh 2g of polyvinylidene fluoride and dissolve it in the above solution, and heat it at 75°C Heating and dissolving to obtain a uniform and transparent solution, and then the solution is subjected to an electrospinning process to coat the polymer nanofibers on the surface of the metal wire. The parameters of the electrospinning process are: voltage: 8kV; receiving distance: 25cm; extrusion speed : 1.0ml / h. Finally, the obtained composite fiber was placed in a ventilated environment at 25° C. for 48 hours to complete the preparation.

[0024] In the obtained composite electrical fiber, the core layer copper wire and the skin layer polyvinylidene fluoride fiber have good adhesion, relatively tight adhesion, uniform thickness, slightly yellowish color, good piezoelectric performance, and a piezoelectric voltage of 0.12V / cm. ...

Embodiment 2

[0026] Weigh 58.3 μmol of copper chloride dihydrate, dissolve it in a compound solution of 10.8g DMF and 7.2g acetone, and make it completely dissolved; then weigh 2g of polyvinylidene fluoride and dissolve it in the above solution, and heat Under heating and dissolving, a uniform and transparent solution is obtained, and then the solution is subjected to an electrospinning process to coat the polymer nanofibers on the surface of the metal wire. The electrospinning process parameters are: voltage: 15kV; receiving distance: 15cm; extrusion Speed: 1.5ml / h. Finally, the obtained composite fiber was placed in a ventilated environment at 25° C. for 48 hours to complete the preparation.

[0027] In the obtained composite piezoelectric fiber, the core layer copper wire and the skin layer polyvinylidene fluoride fiber have good adhesion, the adhesion is relatively tight, the thickness is uniform, the color is slightly blue-green, and the piezoelectric performance is good. The piezoele...

Embodiment 3

[0029] Weigh 1.6g of polyvinylidene fluoride, dissolve it in a compound solution of 10.8g DMF and 7.2g acetone, heat and dissolve it at 75°C to obtain a uniform and transparent solution, and then carry out the electrospinning process of the solution, The polymer nanofibers are coated on the surface of the wire, and the electrospinning process parameters are: voltage: 20kV; receiving distance: 20cm; extrusion speed: 0.5ml / h. Finally, the obtained composite fiber was placed in a ventilated environment at 25° C. for 48 hours to complete the preparation.

[0030] In the obtained composite piezoelectric fiber, the core layer copper wire and the skin layer polyvinylidene fluoride fiber have poor adhesion, the skin layer fiber is thinner, and the structure is fluffy, the thickness is uniform, and the piezoelectric voltage is 0.04V / cm.

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Abstract

The invention relates to a piezoelectric polymer / metal composite nano-filament and a preparation method thereof. The piezoelectric polymer / metal composite nano-filament comprises conductive metal wire core layer and a piezoelectric polymer surface layer. The preparation method comprises the following preparation steps: at first, a polymer is dissolved in a single or compound solvent, then a solution is sprayed on the surface of a metal wire by electrostatic spinning to enable the solution to coat a polymer nano-fiber surface layer, and at last, the obtained fiber stands at room temperature till the solvent volatilizes. Through electrostatic spinning, a piezoelectric polymer is spun on the metal wire, so that the piezoelectric polymer directly coats the metal wire, the metal wire is directly used as an electrode during the packaging process, the refine and the power generation efficiency of a nanogenerator are improved, and the piezoelectric polymer / metal composite nano-filament has a high development prospect in the aspects of sensor, medicine, and energy conversion.

Description

technical field [0001] The invention belongs to the field of piezoelectric materials and their preparation, in particular to a piezoelectric polymer / metal composite nano single fiber and its preparation method. Background technique [0002] At present, the common piezoelectric materials are mainly divided into three categories: piezoelectric ceramics, piezoelectric semiconductors and piezoelectric polymers. The first two types of piezoelectric materials are inorganic materials, which have the characteristics of high piezoelectric efficiency and stable performance, but their shortcomings are also Obviously, the plasticity is poor, the biocompatibility is poor, and some also contain toxic substances such as heavy metals, so they cannot be widely used in various fields. The piezoelectric polymer makes up for some shortcomings of inorganic piezoelectric materials. It has good biocompatibility, is easy to process, and is light in weight. It is a new type of piezoelectric material...

Claims

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Application Information

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IPC IPC(8): D01F8/10D01F8/18D01F1/10D01D5/00
Inventor 俞昊俞彬
Owner DONGHUA UNIV
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