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A kind of preparation method of pure lead zirconate titanate nanofiber ceramic material

A technology of nanofibers and ceramic materials, applied in the field of piezoelectric ceramics, can solve the problems of unstable performance of PZT powder, hidden dangers of device performance and stability, and unstable doping ions, etc., and achieve excellent piezoelectric activity and reduced grain size. Small, to avoid the effect of impurity phase formation

Active Publication Date: 2022-07-26
DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are many methods for preparing PZT powder, but both the traditional high-temperature solid-phase synthesis method and the chemical co-precipitation method have many disadvantages in the preparation of pure PZT, such as poor piezoelectric activity, low sintering activity, and uneven particle size. And so on, in order to improve the above drawbacks of pure PZT, the main method at present is to improve the piezoelectric activity of PZT by doping modification, but due to the difference between the dopant ions and the original lattice ions, the dopant ions in the lattice cannot Stable existence leads to unstable performance of doped modified PZT powder, and more impurity phases appear, which will cause many hidden dangers to the performance and stability of the device in the later stage

Method used

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  • A kind of preparation method of pure lead zirconate titanate nanofiber ceramic material
  • A kind of preparation method of pure lead zirconate titanate nanofiber ceramic material
  • A kind of preparation method of pure lead zirconate titanate nanofiber ceramic material

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Embodiment approach

[0045] According to some embodiments provided by the present invention, the preparation method of the pure lead zirconate titanate nanofiber ceramic material includes:

[0046] S1: Dissolve lead salt in ethylene glycol to configure the first solution;

[0047] S2: Mix ethylene glycol, glacial acetic acid, and anhydrous ethanol to form a mixed solvent, and then add the first part of PVP, zirconium salt, and titanium salt to dissolve in sequence, and configure the second solution;

[0048] S3: mixing the first solution with the second solution, and then adding a second portion of PVP to dissolve to obtain a PZT precursor sol solution;

[0049] S4: electrospin the PZT precursor sol solution to obtain PZT precursor fibers;

[0050] S5: heat treatment of the PZT precursor fiber to obtain a pure lead zirconate titanate nanofiber ceramic material.

[0051] According to some embodiments provided by the present invention, the preparation method of the pure lead zirconate titanate nan...

Embodiment 1

[0060] 1. PZT precursor sol solution configuration

[0061] First, weigh 2.0864g of lead acetate trihydrate and dissolve it in 5g of ethylene glycol solution, stir on a magnetic stirrer for 30 minutes, and configure the first solution; into 60g mixed solvent, add mass fraction of 1% PVP (based on the mass of the mixed solvent as 100%) and stir to dissolve, then weigh 0.6012g of zirconium oxynitrate and dissolve it in the mixed solvent, heat and stir properly until it is completely dissolved, and cool to 10 After ℃, 0.8168g of tetrabutyl titanate was added dropwise, and fully stirred on a magnetic stirrer to configure a second solution; the first solution was slowly added dropwise into the second solution, and stirred well, and then an appropriate amount of 7% PVP was added. (Based on the mass of the mixed solvent as 100%), stir to dissolve, and place in a 60° C. water bath to stir for 6 hours until the solution is clear and transparent.

[0062] 2. Electrospinning into PZT pr...

Embodiment 2

[0069] 1. PZT precursor sol solution configuration

[0070] First, weigh 2.0864g of lead acetate trihydrate and dissolve it in 5g of ethylene glycol solution, stir on a magnetic stirrer for 30 minutes, and configure the first solution; into 60g mixed solvent, add mass fraction 2% PVP (based on the mass of the mixed solvent as 100%) and stir to dissolve, then weigh 0.6012g of zirconium oxynitrate and dissolve it in the mixed solvent, heat and stir properly until it is completely dissolved, and cool to 10 After ℃, 0.8168g of tetrabutyl titanate was added dropwise, fully stirred on a magnetic stirrer, and configured into a second solution; the first solution was slowly added dropwise to the second solution, and fully stirred, and then an appropriate amount of 8% PVP was added. (Based on the mass of the mixed solvent as 100%), stir to dissolve, and place in a 60° C. water bath to stir for 6 hours until the solution is clear and transparent.

[0071] 2. Electrospinning into PZT pr...

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Abstract

The invention discloses a preparation method of pure lead zirconate titanate nanofiber ceramic material, comprising the following steps: S1: dissolving lead salt in ethylene glycol to prepare a first solution; S2: dissolving ethylene glycol and glacial acetic acid , anhydrous ethanol is mixed to form a mixed solvent, and then the first part of PVP, zirconium salt, and titanium salt are added to dissolve in turn, and configured into a second solution; S3: Mix the first solution with the second solution, and then add the second part of PVP to dissolve, A PZT precursor sol solution is obtained; S4: electrospinning the PZT precursor sol solution to obtain a PZT precursor fiber; S5: heat treatment of the PZT precursor fiber to obtain a pure lead zirconate titanate nanofiber ceramic material. The invention simply and effectively prepares the pure lead zirconate titanate nano-ceramic fiber material with a size of 50-200 nm, uniform size and stable performance by combining the gel-gel process and the electrospinning process, and its piezoelectric activity D33 is as high as 450 ‑500pC / N.

Description

technical field [0001] The invention relates to the technical field of piezoelectric ceramics, in particular to a preparation method of a pure lead zirconate titanate nanofiber ceramic material. Background technique [0002] Lead zirconate titanate (PZT) material is a widely used piezoelectric functional material, which has many advantages such as good piezoelectric, dielectric, ferroelectric properties, and good stability, especially near the quasi-in-phase boundary. Ceramics have high piezoelectric constant and electromechanical coupling coefficient. They are the basic materials for the preparation of ultrasonic transducers, piezoelectric transformers, filters and piezoelectric buzzers. They play an important role in electronic materials and machinery manufacturing. . [0003] The preparation of lead zirconate titanate powders with high purity, high voltage electroactivity, uniform particle size and appropriate stoichiometric ratio is the most important prerequisite for o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/491C04B35/622C04B35/624
CPCC04B35/491C04B35/6225C04B35/624C04B2235/449C04B2235/48C04B2235/6562C04B2235/6567C04B2235/95C04B2235/96
Inventor 廖添李向东张军任奕菲胡三元周政何凤荣
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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