Type 1-3 polymer/cement based piezoelectric composite material and preparation method thereof

A piezoelectric composite material and polymer technology, which is applied in the field of 1-3 type polymer/cement-based piezoelectric composite material and its preparation, can solve the problem of interfacial adhesion, restrict the intelligent development of civil engineering structures, and improve temperature Moisture-induced deformation coordination problems, etc.

Inactive Publication Date: 2011-11-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These smart materials have very obvious compatibility problems with concrete, the most important structural material in the field of civil engineering, such as acoustic impedance

Method used

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  • Type 1-3 polymer/cement based piezoelectric composite material and preparation method thereof
  • Type 1-3 polymer/cement based piezoelectric composite material and preparation method thereof
  • Type 1-3 polymer/cement based piezoelectric composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0073] Example 1

[0074] A 1-3 polymer / cement-based piezoelectric composite material, using a mixture of E-55 epoxy resin and Portland cement as the matrix, and using niobium lithium zirconium titanate piezoelectric ceramics as the functional body. The body is cut into multiple rows of vertical columns, and the matrix is ​​filled around and inside the functional body by casting; wherein the mass ratio of polymer to cement is 0.3:1, and the volume ratio of piezoelectric ceramic to matrix is ​​4 :5. It is prepared as follows:

[0075] (1) Take a piezoelectric ceramic block, first cut a series of grooves on it horizontally, and then cut a series of grooves in the direction perpendicular to it, so that a series of vertical columns are formed on the piezoelectric ceramic block. Keep the volume ratio of the piezoelectric ceramic to the substrate 4:5, and the cross-sectional area of ​​the vertical column is 1 mm×1 mm;

[0076] (2) After cutting, clean the cut ceramic block repeatedly w...

Example Embodiment

[0082] Example 2

[0083] A 1-3 polymer / cement-based piezoelectric composite material, using a mixture of 731 epoxy resin and ferro-aluminate cement as a matrix, and using niobium-magnesium-zirconium-zirconate-titanate piezoelectric ceramic as a functional body. Cut into multiple rows of vertical columns, the substrate is filled on the functional body by casting. Specifically, the substrate is cast in the interval between the vertical columns of the functional body and on the surrounding walls of the ceramic block, so that the functional body and the substrate cross Mix together; wherein the mass ratio of polymer to cement is 0.5:1, and the volume ratio of piezoelectric ceramic to matrix is ​​3:5. The preparation is as in Example 1.

[0084] The properties of the resulting composite material are:

[0085]

Example Embodiment

[0086] Example 3

[0087] A 1-3 polymer / cement-based piezoelectric composite material, using a mixture of AG80 epoxy resin and aluminate cement as the matrix, and lead zirconate titanate piezoelectric ceramic as the functional body, which is cut into Multiple rows of vertical columns, the base body is filled on the functional body by casting, specifically, the base body is cast in the interval between the vertical columns of the functional body and on the surrounding walls of the ceramic block, so that the functional body and the base body are cross-mixed ; Among them, the mass ratio of polymer to cement is 0.15:1, and the volume ratio of piezoelectric ceramic to matrix is ​​1:5. The preparation is as in Example 1.

[0088] The properties of the resulting composite material are:

[0089]

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PUM

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Abstract

The invention discloses a type 1-3 polymer/cement-based piezoelectric composite material and a preparation method thereof. The material uses a mixture of polymer and cement as a matrix, and piezoelectric ceramics as a functional body, and the functional body is cut It is formed into multiple rows of vertical columns, and the surrounding and inside of the functional body are filled with matrix; wherein, the mass ratio of polymer to cement is 0.15~0.7:1, and the volume ratio of piezoelectric ceramics to matrix is ​​1~4:5. The flexibility, strength and bonding strength of the matrix and the functional phase of the polymer/cement-based piezoelectric composite material are obviously improved, and the overall performance of the composite material is improved. At the same time, the frequency bandwidth of polymer/cement-based piezoelectric composites is significantly increased, which broadens its application range, especially the polymer/cement-based piezoelectric composites have better compatibility with concrete, making them suitable for use in civil engineering structures. The field of health monitoring has broad application prospects.

Description

technical field [0001] The invention relates to a modified piezoelectric composite material and a preparation method thereof, in particular to a type 1-3 polymer / cement based piezoelectric composite material which uses a mixture of polymer and cement to modify piezoelectric ceramics and its preparation method. Background technique [0002] At present, in the field of civil engineering, the use of smart materials to implement online health inspection / monitoring and forecasting of some major civil engineering buildings (such as long-span bridges, high-rise buildings and dams, etc.) has attracted widespread attention. However, due to the late start of the research on smart materials in the field of civil engineering, most of the smart materials currently used follow the more mature materials in other fields, such as memory alloys, optical fibers, resistance strain wires and carbon fibers. These smart materials have very obvious compatibility problems with concrete, the most im...

Claims

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Application Information

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IPC IPC(8): C04B28/00
Inventor 程新黄世峰徐东宇常钧叶正茂郭丽丽
Owner UNIV OF JINAN
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