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Piezoelectric fiber and preparation method thereof

A piezoelectric fiber and slurry technology, applied in the field of piezoelectric materials, can solve the problems of high cost, difficult to obtain dense and uniform diameter, complicated preparation method, etc. simple effect

Active Publication Date: 2021-01-29
NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application discloses a piezoelectric fiber and its preparation method. By improving the preparation method, it is difficult to obtain dense and uniform piezoelectric fibers in the existing preparation method, and the preparation method is complicated and expensive.

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  • Piezoelectric fiber and preparation method thereof
  • Piezoelectric fiber and preparation method thereof
  • Piezoelectric fiber and preparation method thereof

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preparation example Construction

[0042] The embodiment of the present application provides a piezoelectric fiber, and the preparation method of the piezoelectric fiber includes the following steps:

[0043] Mixing: mixing the aqueous solution of the binder and the PZT material to form a slurry;

[0044] Filling: adding the above slurry into the mold, and the mold has at least a tubular portion with uniform diameter, and the above slurry is extruded into the tubular portion;

[0045] Buried firing: place the loaded mold in a saturated lead atmosphere for buried firing at a temperature of 1200°C-1300°C to obtain piezoelectric fibers.

[0046] The above preparation method has the advantages of simple operation and low cost, and the piezoelectric fiber prepared by the above preparation method has the advantages of uniform diameter and high density. This can well overcome the disadvantages of poor compactness of the piezoelectric fiber and the like in the related art when the spinning method and other preparation...

Embodiment 1

[0082] The embodiment of the present application provides a piezoelectric fiber, such as figure 1 Shown, the preparation method of this piezoelectric fiber comprises the following steps:

[0083] Preparation: Add the binder polyvinyl alcohol into the water at room temperature, stir for 30 minutes, and ultrasonically oscillate in boiling water at 100°C until the aqueous solution of polyvinyl alcohol is clear and transparent, then cool the aqueous solution of polyvinyl alcohol to room temperature, and wait for wherein, the water is deionized water, and the aqueous solution of polyvinyl alcohol is prepared according to the ratio of the mass percentage of polyvinyl alcohol in the aqueous solution of polyvinyl alcohol to 5%.

[0084] Mixing: Weigh the PZT material and mix it with the above-mentioned prepared concentration of polyvinyl alcohol solution, and use a ball mill to vibrate the mixed liquid for 2 hours to obtain a uniformly mixed slurry; among them, the PZT material is PZT...

Embodiment 2

[0090] The embodiment of the present application provides a piezoelectric fiber, and the preparation method of the piezoelectric fiber includes the following steps:

[0091] Preparation: Add the binder polyvinyl alcohol to the water at room temperature, stir for 20 minutes, and ultrasonically oscillate in boiling water at 95°C until the aqueous solution of polyvinyl alcohol is clear and transparent, then cool the aqueous solution of polyvinyl alcohol to room temperature, and wait for wherein, the water is deionized water, and the aqueous solution of polyvinyl alcohol is prepared according to the ratio of the mass percentage of polyvinyl alcohol in the aqueous solution of polyvinyl alcohol to 4%.

[0092] Mixing: Weigh the PZT material and mix it with the above-mentioned prepared concentration of polyvinyl alcohol solution, and use a ball mill to vibrate the mixed liquid for 4 hours to obtain a uniformly mixed slurry; among them, the PZT material is PZT powder, and the PZT mater...

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Abstract

The invention relates to the technical field of piezoelectric materials, in particular to a piezoelectric fiber and a preparation method thereof. The preparation method of the piezoelectric fiber comprises the following steps: mixing an aqueous solution of a binder with a PZT material to form slurry; adding the slurry into a mold, wherein the mold is at least provided with a tubular part with theuniform diameter, and the slurry is extruded into the tubular part; and placing the charged mold in a lead atmosphere for burying sintering at the temperature of 1200 DEG C to 1300 DEG C to obtain thepiezoelectric fiber. The preparation method provided by the embodiment of the invention has the advantages of simple operation and low cost, and the piezoelectric fiber with uniform diameter and highcompactness can be obtained through the preparation method.

Description

technical field [0001] The invention relates to the technical field of piezoelectric materials, in particular to a piezoelectric fiber and a preparation method thereof. Background technique [0002] Piezoelectric materials refer to materials that produce corresponding changes in induced charge due to static pressure changes or temperature changes. This material can adapt to changes in the environment to achieve mutual conversion between mechanical energy and electrical energy. Among all kinds of piezoelectric materials, piezoelectric fibers have attracted extensive attention due to their excellent piezoelectric properties and anisotropy of special structures. [0003] At present, the preparation methods of piezoelectric fibers are mainly sol-gel method and spinning method. However, it is difficult to obtain piezoelectric fibers with high density and uniform diameter by these methods, resulting in limited practical applications of piezoelectric fibers. In addition, the cur...

Claims

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Application Information

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IPC IPC(8): C04B35/491C04B35/622C04B35/634
CPCC04B35/491C04B35/62231C04B35/62259C04B35/6225C04B35/63416
Inventor 向远方
Owner NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH
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