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Composite microsphere for piezoelectric power generation asphalt pavement

A technology of composite microspheres and asphalt pavement, which is applied in the field of piezoelectric materials, can solve the problems of small strain and low charge generation, and achieve the effects of good deformation force, excellent elasticity, and enhanced elastic deformation ability

Inactive Publication Date: 2021-03-09
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a composite microsphere and a preparation method for piezoelectric power generation asphalt pavement, and to solve the problem of the piezoelectric powder material in the piezoelectric power generation asphalt pavement in the prior art. Due to the problems of less stress, less strain, and less charge generation, the prepared composite microspheres have good deformation force, and the composite microspheres used for piezoelectric power generation asphalt pavement can produce larger Strain, which is mixed with piezoelectric power generation asphalt pavement to enhance the power generation performance of piezoelectric power generation asphalt pavement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1, adding barium titanate into a sand mill and grinding until the average particle size of barium titanate is less than 100nm to obtain nanometer barium titanate for use;

[0025] Step 2. Dilute the water glass with pure water, add acetic acid to adjust the pH to 4, hydrolyze and age for 24 hours, heat and drain to obtain a silica sol with a mass concentration of 10%; then add nano-barium titanate, nano-barium titanate The amount of addition is 15% of the mass of silica sol; high-speed stirring is uniform, and spray drying is obtained to obtain silica-nano barium titanate composite powder;

[0026] Step 3: Dissolve 10kg of SBS in 100kg of toluene to obtain glue, disperse 20kg of silica-nanobarium titanate composite powder, and 0.05kg of foaming agent azodicarbonamide in the glue, and further spray dry at 100°C to obtain spherical Composite microspheres, as composite microspheres for piezoelectric power generation asphalt pavement.

Embodiment 2

[0028] Step 1, adding barium titanate into a sand mill and grinding until the average particle size of barium titanate is less than 100nm to obtain nanometer barium titanate for use;

[0029] Step 2. Dilute the water glass with pure water, add acetic acid to adjust the pH to 4, hydrolyze and age for 24 hours, heat and drain to obtain a silica sol with a mass concentration of 10%; then add nano-barium titanate, nano-barium titanate The amount of addition is 20% of the mass of silica sol; high-speed stirring is uniform, and spray drying is obtained to obtain silica-nano barium titanate composite powder;

[0030] Step 3: Dissolve 5kg of SBS in 80kg of toluene to obtain glue, disperse 20kg of silica-nano barium titanate composite powder, 0.1kg of foaming agent 4,4'-oxobisbenzenesulfonylhydrazine in the glue, and further in 100 ℃ spray drying to obtain spherical composite microspheres, which are used as composite microspheres for piezoelectric power generation asphalt pavement.

Embodiment 3

[0032] Step 1, adding barium titanate into a sand mill and grinding until the average particle size of barium titanate is less than 100nm to obtain nanometer barium titanate for use;

[0033] Step 2. Dilute the water glass with pure water, add acetic acid to adjust the pH to 4, hydrolyze and age for 24 hours, heat and drain to obtain a silica sol with a mass concentration of 10%; then add nano-barium titanate, nano-barium titanate The amount of addition is 25% of the mass of silica sol; high-speed stirring is uniform, and spray drying is obtained to obtain silica-nano barium titanate composite powder;

[0034] Step 3: Dissolve 10kg of SBS in 100kg of toluene to obtain glue, disperse 20kg of silicon dioxide-nano barium titanate composite powder, 0.05kg of foaming agent azodicarbonamide in the glue, and further spray dry at 100°C to obtain Spherical composite microspheres are used as composite microspheres for piezoelectric power generation asphalt pavement.

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PUM

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Abstract

The invention relates to the technical field of piezoelectric materials, in particular to a composite microsphere for a piezoelectric power generation asphalt pavement. The preparation method is characterized by comprising the following steps: compounding nano barium titanate and silicon dioxide sol to prepare elastic silicon dioxide nano barium titanate composite powder, and dispersing the elastic silicon dioxide nano barium titanate composite powder, an SBS elastomer and a foaming agent to obtain the composite microsphere. The composite microsphere has good elastic deformation capacity, whenthe composite microsphere is used for an asphalt pavement, a foaming agent in the composite microsphere further promotes foaming of the composite microsphere under the high-temperature condition, theelastic deformation capacity of the composite microsphere is greatly enhanced, the deformation force in an asphalt mixture is better, and large strain can be generated under the action of small pressure stress; and the piezoelectric performance of the composite microsphere is more favorably exerted, and the composite microsphere can be widely applied to piezoelectric power generation asphalt pavements.

Description

technical field [0001] The invention relates to the technical field of piezoelectric materials, in particular to a composite microsphere used for piezoelectric power generation asphalt pavement. Background technique [0002] With the depletion of environmental resources, the recovery and reuse of energy has been valued by the whole society. In recent years, the road mileage and the number of motor vehicles in my country have increased rapidly, and a large amount of mechanical vibration energy has been accumulated inside the road under the frequent action of vehicle loads. Therefore, the development of a power generation surface that can convert the mechanical strain energy inside the road into electrical energy has attracted more and more attention. [0003] Piezoelectric materials are functional conversion materials that can generate electric charges under load. The principle of piezoelectric materials is that if a pressure is applied to the piezoelectric material, it wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26E01C7/26
CPCC04B40/0039E01C7/26C04B22/08C04B14/06C04B24/124C04B24/2676C04B24/20
Inventor 陈庆司文彬白涛李钧
Owner CHENDU NEW KELI CHEM SCI CO LTD