A Method for Fabricating Microstructured Piezoelectric Energy Harvesters Based on Dissolvable Molds

A microstructured, piezoelectric energy harvesting technology, which is applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problem of high cost, inability to process three-dimensional complex structures, It takes a long time for precision molds to achieve the effect of improving output performance, low cost, and good application prospects

Active Publication Date: 2020-03-24
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] At present, the structural processing technology of piezoelectric ceramics is mainly to mix piezoelectric ceramics with organic substrates and prepare structures by flipping films. However, the processing of precision molds takes a long time and costs high, and cannot process three-dimensional complex structures.

Method used

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  • A Method for Fabricating Microstructured Piezoelectric Energy Harvesters Based on Dissolvable Molds
  • A Method for Fabricating Microstructured Piezoelectric Energy Harvesters Based on Dissolvable Molds
  • A Method for Fabricating Microstructured Piezoelectric Energy Harvesters Based on Dissolvable Molds

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] A method for preparing a microstructured piezoelectric sensor based on micro-stereolithography, comprising the following steps:

[0026] The first step, the preparation of the soluble mold 3: put the soluble photosensitive resin 4 into the resin tank 5, adjust the lifting of the printing platform 2 immersed in the soluble photosensitive resin 4 to control the thickness of the printing layer, and use the ultraviolet light 1 to expose for layered curing and print The layer thickness is 0.04mm, the bottom layer is 1-3 layers, the exposure time of the bottom layer is 6s, and the exposure time of the subsequent single layer is 1-2s, and the microstructured soluble mold 3 is prepared, such as figure 1 shown;

[0027] The second step, the preparation of the composite piezoelectric material 9: mixing and dispersing the piezoelectric material and the organic matrix, a...

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Abstract

The invention provides a method for preparing a microstructured piezoelectric energy harvester based on a soluble mold. The method comprises the steps of preparing a soluble resin mold, preparing a composite piezoelectric material, then pouring the composite piezoelectric material into the soluble resin mold, dissolving the soluble resin mold after solidification to obtain a microstructured composite piezoelectric film, symmetrically adhering electrodes formed by flexible substrate / metal / composite piezoelectric materials on upper and lower sides of the microstructured composite piezoelectric film, heating and curing to form a piezoelectric energy harvester, placing the piezoelectric energy harvester into an oven, applying direct current power supply, raising the temperature of the oven tothermally polarize the piezoelectric film, maintaining application voltage such that internal molecules are oriented in the direction of an electric field, and cooling the oven to the room temperatureand then removing voltage under the condition of maintaining the voltage to obtain the microstructured piezoelectric energy harvester. The method has the advantages of simple process, low cost and high efficiency, and the output performance of the piezoelectric energy harvester is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of micro-nano manufacturing, and in particular relates to a method for preparing a microstructured piezoelectric energy harvester based on a soluble mold. Background technique [0002] With the advancement of science and technology and the continuous increase of population, energy issues are inseparable from human survival and development. Due to the increase in energy demand, the limitation of the use of fossil fuels and the resulting environmental problems have forced people to develop new and environmentally friendly technologies that can be used for energy harvesting and storage. Among the environmental energy available around people (solar energy, thermal energy, chemical energy, etc.), mechanical energy is expected to become the most valuable energy source due to its controllable frequency and amplitude, and the convenience of using it anytime and anywhere. How to effectively convert mechanical energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/00H02N2/18
CPCH02N2/18H02N2/22
Inventor 陈小明叶世博邵金友丁鹏李浩田洪淼
Owner XI AN JIAOTONG UNIV
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