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A kind of piezoelectric composite material for road and preparation method thereof

A piezoelectric composite material, road-use technology, applied in the direction of material selection for piezoelectric devices or electrostrictive devices, manufacturing/assembly of piezoelectric/electrostrictive devices, device material selection, etc., can solve the problem of composite materials Reduced piezoelectric and dielectric properties, poor anti-traffic load impact performance, and great impact on the ecological soil environment, etc., to achieve the effect of improving piezoelectric and dielectric properties, improving anti-traffic load impact performance, and simple process

Active Publication Date: 2021-12-07
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The piezoelectric and dielectric properties of traditional piezoelectric ceramics are very good, but its hard and brittle characteristics make it difficult to form, and its resistance to traffic load impact is poor; it is made by adding polymers with good mechanical properties Piezoelectric composite materials, although their hard and brittle characteristics are improved, but the piezoelectric and dielectric properties of the composite material are reduced, and the electrical properties are seriously hindered
In addition, traditional piezoelectric materials have high lead content, which has a great impact on the ecological soil environment

Method used

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  • A kind of piezoelectric composite material for road and preparation method thereof
  • A kind of piezoelectric composite material for road and preparation method thereof
  • A kind of piezoelectric composite material for road and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The path piezoelectric composite of the present invention consists of 70 g of barium titanate and 32 g of polyvinylidene fluoride.

[0032] The melting point Tm of polyvinylidene fluoride is 167 ° C, the density ρ is 1.75 g / cm 3 The number average molecular weight of polyvinylidene ethylene is 825000.

[0033] The method of preparing the path piezoelectric composite material of the present invention includes the following steps:

[0034] 1) Take polyfluidic fluoride and barium titanate;

[0035] 2) Place the polyvinylidene fluoride and the barium titanate into the magnetic stirrer, and then add anhydrous ethanol to the magnetic agitator, then ground 15min, then placed in an oven, and dry at a temperature of 100 ° C for 75 minutes. Mixed powder;

[0036] 3) The mixed powder obtained by step 2) is placed in the hot pressing abrasive, and then heats up to 175 ° C for 60 min, and then the pressure is applied to the mixed powder, and the pressure is 30 min, and the sample is o...

Embodiment 2

[0041] The path piezoelectric composite of the present invention consists of 75 g of barium titanate and 32 g of polyvinylidene fluoride;

[0042] The melting point Tm of polyvinylidene ethylene is 167 ° C, the density ρ is 1.77 g / cm 3 The number average molecular weight of polyvinylidene ethylene is 825000.

[0043] The method of preparing the path piezoelectric composite material of the present invention includes the following steps:

[0044] 1) Place the ruthenium titanate in the jade crucible, and then raise the rigidity of the rigidity to 850 ° C at a speed of 5 ° C / min; and heat it up to 90 min, then cool down to room temperature;

[0045] 2) Titanate obtained by reference polyfial fluoride and step 1);

[0046] 3) Place the polyfial fluoride and the barium titanate into the magnetic stirrer, and then add anhydrous ethanol to the magnetic stirrer, then ground for 10 min, then placed in an oven, and dried at a temperature of 100 ° C for 60 min. Mixed powder;

[0047] 4) P...

Embodiment 3

[0052] The path piezoelectric composite of the present invention consists of 68 g of barium titanate and 29 g of polyvinylidene fluoride;

[0053] The melting point Tm of polyvinylidene fluoride is 167 ° C, the density ρ is 1.76 g / cm 3 The number average molecular weight of polyvinylidene ethylene is 825000.

[0054] The method of preparing the path piezoelectric composite material of the present invention includes the following steps:

[0055] 1) Place the ruthenium titanate in the jade crucible, and then raise the rigidity of the rigidity to 950 ° C at a speed of 10 ° C / min; and heat it up to 75 min, then cool down to room temperature;

[0056] 2) Titanate obtained by reference polyfial fluoride and step 1);

[0057] 3) Place the polyfial fluoride and barium titanate into the magnetic stirrer, and then add anhydrous ethanol to the magnetic agitator, then ground for 13 minutes, then placed in an oven, and dry at a temperature of 100 ° C for 70 minutes. Mixed powder;

[0058] ...

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Abstract

The invention discloses a piezoelectric composite material for roads and a preparation method thereof, which consists of 0.6-0.8 parts by mass of barium titanate and 0.2-0.4 parts of polyvinylidene fluoride. The invention has excellent piezoelectric and dielectric properties, and meanwhile has good anti-traffic load impact performance, has little impact on the soil environment, and has a simple preparation method.

Description

Technical field [0001] The present invention belongs to the research technology of road materials, and involves a road piezoelectric composite material and a preparation method thereof. Background technique [0002] With the development of society and the economy, with the continuous exhaustion of non-renewable energy, the environmental quality is continuously declining, how to efficiently collect clean energy and can be used in the actual project, becoming the focus of energy collection research. As is well known, the road is in the process of use, and each year should bear hundreds of thousands of vehicles crushing. The vibration generated can be considerable. Vehicle vibration can cause damage to the road, but also cause waste of energy. If the vibration energy is collected, convert it to the energy available to people, not only brings huge economic benefits and environmental benefits, but also reduce the vibration and deformation of the road surface, reduce pavement structura...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/18H01L41/187H01L41/193H01L41/37E01C9/00
CPCE01C9/00H10N30/8536H10N30/852H10N30/857H10N30/092
Inventor 裴建中任鑫赵振华李蕊张久鹏蔡军王彦淞刘卧龙刘涛
Owner CHANGAN UNIV
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