A kind of preparation method of piezoelectric fiber composite structure layer

A piezoelectric fiber composite, piezoelectric fiber technology, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc., can solve the problem of low production efficiency, fiber The thickness of the interpolymer is difficult to control and other problems, so as to achieve the effect of uniform thickness, avoid filling difficulties and improve flexibility.

Active Publication Date: 2019-07-23
WUHAN UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to propose an improved simple and efficient piezoelectric fiber composite structure layer for the problems of difficulty in controlling the thickness of the interfiber polymer and low production efficiency in the method for preparing the piezoelectric fiber composite structure layer provided by the prior art. The preparation method of the structural layer can precisely control the structural parameters of the piezoelectric fiber composite layer and improve the preparation efficiency

Method used

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  • A kind of preparation method of piezoelectric fiber composite structure layer
  • A kind of preparation method of piezoelectric fiber composite structure layer
  • A kind of preparation method of piezoelectric fiber composite structure layer

Examples

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Embodiment 1

[0029] In this example, the preparation of the PZT-5H-based MFC structure piezoelectric fiber composite material is aimed at, and the piezoelectric fiber composite structure layer is prepared by the present invention. The specific process is as follows:

[0030] 1. Using PZT-5H piezoelectric ceramic powder as raw material, a piezoelectric ceramic block with a size of 60×20×20mm was prepared by solid-phase synthesis method, and cut into a piezoelectric thin layer with a size of 60×20×0.4mm Several.

[0031] 2. Using epoxy resin as raw material, prepare a thin layer of epoxy resin with a thickness of 0.1mm by hot pressing method, and cut it into several thin layers of epoxy resin with a size of 60×20×0.1mm.

[0032] 3. Take 10 pieces of the piezoelectric thin layer prepared in step 1, and take 9 pieces of the polymer thin layer prepared in step 2, and evenly coat the surfaces that need to be bonded in all piezoelectric thin layers and polymer thin layers. Cover a layer of epoxy...

Embodiment 2

[0036] In this example, the purpose of the preparation of PMnS-based MFC structure piezoelectric fiber composite material is to adopt the present invention to prepare piezoelectric fiber composite structure layer. The specific process is as follows:

[0037] 1. Using PMnS piezoelectric ceramic powder as raw material, a piezoelectric ceramic block with a size of 40×40×20mm was prepared by solid-phase synthesis, and cut into several piezoelectric thin layers with a size of 40×40×0.3mm.

[0038] 2. Using polyester resin as a raw material, prepare a polyester resin thin layer with a thickness of 0.05 mm by hot pressing method, and cut it into several polyester resin thin layers with a size of 40×40×0.05 mm.

[0039] 3. Get 11 pieces of the piezoelectric thin layer prepared in step 1, and get 10 pieces of the polyester resin thin layer prepared in step 2, and apply one layer on both sides of the piezoelectric thin layer and the polyester resin thin layer Polyester resin glue, accor...

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Abstract

The invention relates to a preparation method of a piezoelectric fiber composite structure layer. A piezoelectric ceramic or piezoelectric single crystal thin layer is prepared by a cutting method or a molding method to obtain piezoelectric thin layers of different thicknesses; Prepare polymer thin layers of different thicknesses, cut the polymer thin layers to be consistent with the piezoelectric thin layers in length and width; stack and align the piezoelectric thin layers and polymer thin layers alternately from bottom to top, press Polymer glue is coated between the electric thin layer and the polymer thin layer, and the uppermost layer is controlled to be a piezoelectric thin layer, and the above-mentioned stack is cured by hot pressing to obtain a 2-2 type piezoelectric composite structure; according to The thickness requirements of the finished piezoelectric fiber composite structure layer can be obtained by cutting the 2-2 type piezoelectric composite structure along the stacking direction. It can precisely control the structural parameters of the piezoelectric fiber composite layer, prepare a composite structure layer with serialized fiber volume fraction and size, and effectively improve the production efficiency of the piezoelectric fiber composite material with MFC structure.

Description

technical field [0001] The invention relates to a preparation method of a piezoelectric fiber composite structure layer. Background technique [0002] Piezoelectric materials are a class of smart materials based on the conversion between mechanical energy and electrical energy, and have broad application prospects in the fields of actuation, sensing, structural health monitoring, and energy harvesting. At present, the most widely used piezoelectric materials are piezoelectric crystal materials (piezoelectric ceramics and piezoelectric single crystals), due to the high brittleness, high acoustic impedance, low flexibility and poor environmental adaptability of piezoelectric crystal materials Applications in the field of smart materials are limited. [0003] In order to overcome the deficiencies in the application of piezoelectric crystal materials, since the 1970s, researchers began to try to introduce the concept of composite materials into piezoelectric materials, combinin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/193H01L41/187H01L41/37
CPCH10N30/853H10N30/857H10N30/092
Inventor 周静杨雄陈文沈杰林伟张华章谢焰
Owner WUHAN UNIV OF TECH
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