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Carbon nano tube/lead zirconate titanate/cement piezoelectric composite material and preparation method thereof

A technology of piezoelectric composite materials and lead zirconate titanate, which is applied in the direction of transmitting sensing components by electric/magnetic devices, can solve the problems of low piezoelectric response, high signal-to-noise ratio, and small signal response, and achieve piezoelectric response The effect of improving and improving the preparation efficiency and fast volatilization speed

Inactive Publication Date: 2010-10-06
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the current actual demand, the piezoelectric response of this cement-based piezoelectric composite material is still low, and there are shortcomings of small signal response and high signal-to-noise ratio in practical applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A carbon nanotube / lead zirconate titanate / cement piezoelectric composite material, the components are as follows, all in parts by weight:

[0017] 70 parts of lead zirconate titanate,

[0018] 30 parts of cement,

[0019] 0.3 parts of carbon nanotubes.

[0020] The preparation method of carbon nanotube / lead zirconate titanate / cement piezoelectric composite material, the steps are as follows:

[0021] (1) Dry-mix 70 parts of lead zirconate titanate and 30 parts of cement evenly, add 0.3 parts of carbon nanotubes, use acetone as a grinding aid, ball mill and mix for 30 minutes, dry to volatilize the acetone to obtain a mixed powder.

[0022] (2) Add water to the mixed powder obtained in step (1), the amount of water added is 5% of the weight of the mixed powder, mix evenly, press the mixed material into a disc shape under a pressure of 100MPa, and put it into an environment with a humidity of 100% After neutralizing for 24 hours, dry.

[0023] After drying, the discs ...

Embodiment 2

[0025] A carbon nanotube / lead zirconate titanate / cement piezoelectric composite material, the components are as follows, all in parts by weight:

[0026] 70 parts of lead zirconate titanate,

[0027] 30 parts of cement,

[0028] 0.5 parts of carbon nanotubes.

[0029] The preparation method of carbon nanotube / lead zirconate titanate / cement piezoelectric composite material, the steps are as follows:

[0030] (1) Dry-mix 80 parts of lead zirconate titanate and 20 parts of cement evenly, add 0.5 parts of carbon nanotubes, use acetone as a grinding aid, ball mill and mix for 30 minutes, dry to volatilize the acetone to obtain a mixed powder.

[0031] (2) Add water to the mixed powder obtained in step (1), the amount of water added is 6% of the weight of the mixed powder, mix evenly, press the mixed material into a disc shape under a pressure of 100MPa, and put it into an environment with a humidity of 100% After neutralizing for 24 hours, dry.

[0032] After drying, both sides...

Embodiment 3

[0034] A carbon-stimulated lead zirconate titanate / cement piezoelectric composite material, the components are as follows, all in parts by weight:

[0035] 60 parts of lead zirconate titanate,

[0036] 40 parts of cement,

[0037] 0.3 parts of carbon nanotubes.

[0038] The preparation method of carbon nanotube / lead zirconate titanate / cement piezoelectric composite material, the steps are as follows:

[0039] (1) Dry-mix 60 parts of lead zirconate titanate and 40 parts of cement evenly, add 0.3 parts of carbon nanotubes, use acetone as a grinding aid, ball mill and mix for 40 minutes, dry to volatilize the acetone to obtain a mixed powder.

[0040] (2) Add water to the mixed powder obtained in step (1), the amount of water added is 7% of the weight of the mixed powder, mix evenly, press the mixed material into a disc shape under a pressure of 100MPa, and put it into an environment with a humidity of 100% After neutralizing for 22 hours, dry.

[0041] After drying, the disc...

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Abstract

The invention relates to a carbon nano tube / lead zirconate titanate / cement piezoelectric composite material for a civil engineering sensor and a preparation method thereof. The piezoelectric composite material consists of the carbon nano tube, the lead zirconate titanate and cement. The preparation method comprises the following steps: evenly mixing the carbon nano tube, lead zirconate titanate powder and cement powder; shaping the mixture with water; and hydrating and drying the mixture. The material can be used for preparing the civil engineering sensor after polarizing and aging. The piezoelectric composite material has excellent piezoelectric responsivity.

Description

technical field [0001] The invention relates to a preparation method of a carbon nanotube / lead zirconate titanate / cement piezoelectric composite material for civil engineering sensors, and belongs to the technical field of functional composite materials. Background technique [0002] In recent years, the research on lead zirconate titanate ceramic / cement piezoelectric composites has gradually attracted people's attention. This kind of composite material combines lead zirconate titanate piezoelectric ceramic powder with cement, and by adjusting the relative components of the two, a piezoelectric composite material that matches the acoustic impedance of the building concrete structure can be obtained, which can be used as a sensor element embedded Placed in civil structures for real-time detection of internal defects. In this composite material, the lead zirconate titanate phase with piezoelectric properties is dispersed in the cement. Since the cement is an insulator, it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00G01D5/12
CPCC04B28/04C04B2111/00008C04B2111/00844C04B41/5079C04B2103/0015
Inventor 龚红宇张玉军李宗津李爱菊全静
Owner SHANDONG UNIV
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