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A kind of piezoelectric composite material and piezoelectric sheet prepared therefrom

A piezoelectric composite material and piezoelectric sheet technology, applied in the field of piezoelectric sheets, can solve the problems of slow strength development, unstable durability, poor coagulation time, etc.

Active Publication Date: 2021-09-14
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing cement-based piezoelectric materials have problems such as poor setting time, slow strength development, unstable durability, and poor integration with piezoelectric materials, which cannot well meet the requirements of practical applications.

Method used

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  • A kind of piezoelectric composite material and piezoelectric sheet prepared therefrom
  • A kind of piezoelectric composite material and piezoelectric sheet prepared therefrom
  • A kind of piezoelectric composite material and piezoelectric sheet prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A piezoelectric composite material whose composition is shown in the following table:

[0036] Table 1 Composition table of a piezoelectric composite material

[0037]

[0038] Note: The indicators of each component in the table are as follows:

[0039] Steel slag powder: converter steel slag with alkalinity greater than 2, calcium oxide content greater than 40wt%, iron and its oxide content greater than 2wt%, and aged for half a year;

[0040] Metakaolin: the total content of silicon and aluminum oxide is greater than 90wt%;

[0041] Lithium niobium zirconate lead titanate ceramic powder: the solubility is greater than 10g / 100g water at 10-50°C.

[0042] A piezoelectric sheet is prepared from the piezoelectric composite material shown in the above table, and its preparation method comprises the following steps:

[0043] 1) Add steel slag ore powder, metakaolin and niobium lithium zirconate lead titanate ceramic powder into a ball mill, ball mill for 30 minutes (t...

Embodiment 2

[0053] A piezoelectric composite material whose composition is shown in the following table:

[0054] Table 3 Composition table of a piezoelectric composite material

[0055]

[0056] Note: The indicators of each component in the table are as follows:

[0057] Steel slag powder: converter steel slag with alkalinity greater than 2, calcium oxide content greater than 40wt%, iron and its oxide content greater than 2wt%, and aged for half a year;

[0058] Metakaolin: the total content of silicon and aluminum oxide is greater than 90wt%;

[0059] Lithium niobium zirconate lead titanate ceramic powder: the solubility is greater than 10g / 100g water at 10-50°C.

[0060] A piezoelectric sheet is prepared from the piezoelectric composite material shown in the above table, and its preparation method comprises the following steps:

[0061] 1) Add steel slag ore powder, metakaolin, zinc sulfate and lead niobium lithium zirconate titanate ceramic powder into a ball mill, ball mill for...

Embodiment 3

[0071] A piezoelectric composite material whose composition is shown in the following table:

[0072] Table 5 Composition table of a piezoelectric composite material

[0073]

[0074] Note: The indicators of each component in the table are as follows:

[0075] Steel slag powder: converter steel slag with alkalinity greater than 2, calcium oxide content greater than 40wt%, iron and its oxide content greater than 2wt%, and aged for half a year;

[0076] Metakaolin: the total content of silicon and aluminum oxide is greater than 90wt%;

[0077] Lithium niobium zirconate lead titanate ceramic powder: the solubility is greater than 10g / 100g water at 10-50°C.

[0078] A piezoelectric sheet is prepared from the piezoelectric composite material shown in the above table, and its preparation method comprises the following steps:

[0079] 1) Add steel slag ore powder, metakaolin, zinc sulfate and lead niobium lithium zirconate titanate ceramic powder into a ball mill, ball mill for...

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PUM

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Abstract

The invention discloses a piezoelectric composite material and a piezoelectric sheet prepared therefrom. The piezoelectric composite material of the present invention is composed of the following components by mass: steel slag powder: 10-15 parts; metakaolin: 10-15 parts; alkali activator: 1.5-7.5 parts; niobium lithium zirconate lead titanate ceramic powder : 55-65 parts; admixture: 0.1-1 part. The piezoelectric composite material of the present invention has excellent piezoelectric properties and mechanical properties, a high degree of controllability, and good compatibility with concrete, and the piezoelectric sheet prepared therefrom has excellent performance and low cost, and can be widely used in concrete structure health monitoring .

Description

technical field [0001] The invention relates to a piezoelectric composite material and a piezoelectric sheet prepared therefrom, belonging to the technical field of piezoelectric materials. Background technique [0002] The construction of facilities such as bridges, highways and dams requires the use of a large amount of concrete materials, requiring the construction of large-volume concrete structures. Large-volume concrete structures are susceptible to cracks due to environmental temperature changes, and accumulated damage will occur under the action of external loads, resulting in attenuation of the resistance of the concrete structure, and even structural collapse in severe cases. Therefore, the health monitoring of concrete structures is of great significance. [0003] At present, the health monitoring of concrete structures is mainly carried out through resistance strain gauges, fiber Bragg gratings and piezoelectric ceramics made of traditional sensitive materials. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00H01L41/18H01L41/37
CPCC04B28/006C04B2111/00844H10N30/852H10N30/092C04B18/142C04B14/106C04B22/062C04B22/10C04B14/305C04B2103/302C04B22/142C04B24/42
Inventor 马玉玮邓丽思刘卫森罗甜恬杨志辉
Owner GUANGZHOU UNIVERSITY