Stable piezoelectric ceramic and preparation method thereof

A piezoelectric ceramic and stable technology, applied in the field of materials, can solve problems affecting the normal operation of products, material performance deterioration, poor stability, etc., and achieve the effects of easy control operation, small performance drift, and high tensile strength

Inactive Publication Date: 2018-05-18
ZHENGZHOU SOUQU INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing piezoelectric ceramic materials have poor structural stability, and are prone to depolarization under external conditions, resulting in deterioration of material performance, thereby affecting the normal operation of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the embodiment of the present invention, a stable piezoelectric ceramic includes the following raw materials: 20 kg of strontium carbonate, 7 kg of lead oxide, 11 kg of mercaptopropionic acid, 11 kg of di-n-octyl phthalate, 1 kg of ocher, 3 kg of zinc oxide, silica fume Stone 3kg.

[0023] Mercaptopropionic acid was mixed with 6 times its mass of deionized water to prepare a mercaptopropionic acid solution. Mix strontium carbonate, lead oxide, ochre, zinc oxide, and wollastonite, grind them, pass through a 120-mesh sieve, then add mercaptopropionic acid solution, heat up to 102°C, and seal and stir at this temperature for 1.8 hours. The stirring speed is 220r / min to prepare mixture A. Put di-n-octyl phthalate into mixture A, raise the temperature to 128°C, and seal and stir at this temperature for 1 hour at a stirring speed of 180r / min, then stop heating and perform ultrasonic treatment for 35min with ultrasonic power of 700W. The precipitate was collected by centr...

Embodiment 2

[0025] In the embodiment of the present invention, a stable piezoelectric ceramic comprises the following raw materials: 30 kg of strontium carbonate, 15 kg of lead oxide, 19 kg of mercaptopropionic acid, 19 kg of di-n-octyl phthalate, 5 kg of ocher, 7 kg of zinc oxide, silica fume Stone 7kg.

[0026] Mercaptopropionic acid was mixed with 8 times its mass of deionized water to prepare a mercaptopropionic acid solution. Mix strontium carbonate, lead oxide, ochre, zinc oxide, and wollastonite, grind them, pass through a 150-mesh sieve, then add mercaptopropionic acid solution, heat up to 102°C, and seal and stir at this temperature for 2 hours at a stirring speed of 220r / min, the mixture A was prepared. Put di-n-octyl phthalate into mixture A, raise the temperature to 128°C, and seal and stir at this temperature for 1.2h at a stirring speed of 180r / min, then stop heating and ultrasonically treat for 35min with an ultrasonic power of 700W , centrifuged to collect the precipita...

Embodiment 3

[0028] In the embodiment of the present invention, a stable piezoelectric ceramic comprises the following raw materials: 22 kg of strontium carbonate, 9 kg of lead oxide, 13 kg of mercaptopropionic acid, 13 kg of di-n-octyl phthalate, 2 kg of ocher, 4 kg of zinc oxide, silica fume Stone 4kg.

[0029] Mercaptopropionic acid was mixed with 7 times its mass of deionized water to prepare a mercaptopropionic acid solution. Mix strontium carbonate, lead oxide, ochre, zinc oxide, and wollastonite, grind them, pass through a 150-mesh sieve, then add mercaptopropionic acid solution, heat up to 102°C, and seal and stir at this temperature for 1.9 hours. The stirring speed is 220r / min to prepare mixture A. Put di-n-octyl phthalate into mixture A, raise the temperature to 128°C, and seal and stir at this temperature for 1.1h at a stirring speed of 180r / min, then stop heating and ultrasonically treat for 35min with an ultrasonic power of 700W , centrifuged to collect the precipitate, was...

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Abstract

The invention discloses a stable piezoelectric ceramic and a preparation method thereof. The piezoelectric ceramic comprises the following raw materials in parts by weight: 20-30 parts of strontium carbonate, 7-15 parts of lead oxide, 11-19 parts of mercaptopropionic acid, 11-19 parts of di-n-octyl phthalate, 1-5 parts of haematitum, 3-7 parts of zinc oxide, and 3-7 parts of wollastonite; and thepreparation method comprises the following steps: mixing the strontium carbonate, the lead oxide, the haematitum, the zinc oxide and the wollastonite, performing grinding, adding a mercaptopropionic acid solution, performing heating seal stirring treatment, adding the di-n-octyl phthalate, performing heating seal stirring, performing ultrasonication, performing centrifugation separation, taking aprecipitate, performing washing, performing drying, performing calcination, and performing cooling to obtain the piezoelectric ceramic. The piezoelectric ceramic provided by the invention has the advantages of high-temperature resistance, corrosion resistance, high electrical conductivity, a light weight, high tensile strength, good stability and weather resistance, and very small change of high-temperature impact; and a device prepared from the piezoelectric ceramic has small performance drift and a low failure rate, the stability and consistency of the product are greatly improved, and the large-scale application of piezoelectric high-power products is promoted.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a stable piezoelectric ceramic and a preparation method thereof. Background technique [0002] Piezoelectric ceramics are information functional ceramic materials that can convert mechanical energy and electrical energy into each other - piezoelectric effect. In addition to piezoelectricity, piezoelectric ceramics also have dielectric properties, elasticity, etc., and have been widely used in medical imaging, Acoustic sensors, acoustic transducers, ultrasonic motors, etc. Piezoelectric ceramics are made by using their materials under the action of mechanical stress to cause the relative displacement of the internal positive and negative charge centers to cause polarization, resulting in the appearance of bound charges with opposite signs on the surface of the material, that is, the piezoelectric effect. It has sensitive characteristics. Ceramics are mainly used in the manufact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/58
CPCC04B35/58092C04B2235/3284C04B2235/3296C04B2235/3454C04B2235/442C04B2235/96
Inventor 张秀芝
Owner ZHENGZHOU SOUQU INFORMATION TECH CO LTD
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