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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 complicated preparation methods, difficulty in making dense and uniform diameter, high cost, etc.

Active Publication Date: 2022-08-05
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: Mix the aqueous solution of the binder and the PZT material to form a slurry;

[0044] Charging: the above slurry is added into the mold, and the mold has at least a tubular part with a uniform diameter, and the above slurry is extruded into the tubular part;

[0045] Buried firing: the charged mold is placed in a saturated lead atmosphere for buried firing, and the buried firing temperature is 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 very well overcome the disadvantages of the piezoelectric fibers, such as poor compactness, when using the spinning method and other prepa...

Embodiment 1

[0082] The embodiments of the present application provide a piezoelectric fiber, such as figure 1 As shown, the preparation method of the piezoelectric fiber includes the following steps:

[0083] Preparation: at room temperature, add the binder polyvinyl alcohol to the water, stir for 30 minutes, 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, wait for wherein, the water is deionized water, and the aqueous solution of polyvinyl alcohol is prepared according to the dosage ratio that the mass percentage of polyvinyl alcohol in the aqueous solution of polyvinyl alcohol is 5%.

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

Embodiment 2

[0090] An embodiment of the present application provides a piezoelectric fiber, and a method for preparing the piezoelectric fiber includes the following steps:

[0091] Preparation: Add binder polyvinyl alcohol to water at room temperature, stir for 20 minutes, oscillate ultrasonically 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, wait for wherein, the water is deionized water, and the aqueous solution of polyvinyl alcohol is prepared according to the dosage ratio that the mass percentage of polyvinyl alcohol in the aqueous solution of polyvinyl alcohol is 4%.

[0092] Mixing: Weigh the PZT material and mix with the above-mentioned aqueous solution of polyvinyl alcohol with a prepared concentration, and use a ball mill to shake the mixed liquid for 4 hours to obtain a uniformly mixed slurry; wherein, the PZT material is PZT powder, PZT material The mas...

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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 includes the following steps: mixing an aqueous solution of a binder and a PZT material to form a slurry; adding the slurry into a mold, and the mold has at least a tubular portion with a uniform diameter, and the slurry is The material is extruded into the tubular part; the loaded mold is placed in a lead atmosphere for buried firing, and the buried firing temperature is 1200°C-1300°C to obtain the piezoelectric fiber. The embodiment of the present application has the advantages of simple operation and low cost of the preparation method, and the piezoelectric fiber with uniform diameter and high density can be obtained by 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 induced charge changes due to changes in static pressure or temperature. This material can adapt to changes in the environment to realize the mutual conversion between mechanical energy and electrical energy. Among various 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 application of piezoelectric fibers. In addition, the current piezo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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