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Preparation method of piezoelectric fiber composite material and piezoelectric fiber composite material

A technology of piezoelectric fiber composite and composite materials, which is applied in the preparation of piezoelectric fiber composite materials and the field of piezoelectric fiber composite materials, can solve the problem of reducing the flexibility and stability of composite materials, uneven polarization of piezoelectric fibers, and difficult issues such as

Active Publication Date: 2020-08-04
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a preparation method of piezoelectric fiber composite material and piezoelectric fiber composite material, to solve the problem of piezoelectric fiber electrode Polarization is not uniform, resulting in difficulty in sufficient polarization, thereby reducing the technical problems of flexibility and stability of composite materials

Method used

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  • Preparation method of piezoelectric fiber composite material and piezoelectric fiber composite material
  • Preparation method of piezoelectric fiber composite material and piezoelectric fiber composite material
  • Preparation method of piezoelectric fiber composite material and piezoelectric fiber composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0047] A kind of preparation method of piezoelectric fiber composite material provided by the embodiment of the present invention, such as figure 1 Shown, the preparation method of this piezoelectric fiber composite material comprises:

[0048] S11: Alternately stacking piezoelectric thin layers and polymer thin layers, and coating polymer glue on adjacent surfaces to obtain a first laminated structure.

[0049] In this step, piezoelectric ceramics or piezoelectric single crystal thin layers can be prepared by cutting method or casting method to obtain piezoelectric thin layers with different thicknesses. The thermosetting resin can be prepared into polymer thin layers of different thicknesses by molding method, and the obtained polymer thin layer is cut to be consistent with the size of the piezoelectric thin layer, wherein the size includes length and width.

[0050] S12: curing the first laminated structure to obtain an unpolarized piezoelectric composite structure.

[00...

Embodiment 2

[0061] A kind of preparation method of piezoelectric fiber composite material provided by the embodiment of the present invention, such as figure 2 Shown, the preparation method of this piezoelectric fiber composite material comprises:

[0062] S21: Preparing piezoelectric ceramics or piezoelectric single crystal thin layers by cutting method or casting method to obtain piezoelectric thin layers.

[0063] In this step, if it is piezoelectric ceramics, lead zirconate titanate piezoelectric ceramics (Pb(Zr 1-x Ti x )O 3 , referred to as PZT) ceramic powder as the raw material, using the traditional solid-state method to prepare rectangular parallelepiped piezoelectric ceramics, the ceramic size is 50mm × 30mm × 20mm (length × width × height), the piezoelectric ceramics are cut into piezoelectric thin along the height direction layer, the size of the piezoelectric thin layer is 50mm×20mm×0.3mm (length×width×thickness), and the total number of piezoelectric thin layers can be ...

Embodiment 3

[0093] The embodiment of the present invention provides a piezoelectric fiber composite material, the piezoelectric fiber composite material can be made from the method for preparing the piezoelectric fiber composite material provided in the first or second embodiment above.

[0094] In this embodiment, PZT can be used as the piezoelectric phase, epoxy resin can be used as the polymer phase, and the piezoelectric fiber composite structure layer with gradient structure can be prepared by using the method for preparing the piezoelectric fiber composite material provided in the first or second embodiment above.

[0095] As another implementation of this example, the preparation method of the piezoelectric fiber composite material can also be according to image 3 way.

[0096] Such as image 3As shown, from top to bottom, the piezoelectric thin layer 1 and the polymer thin layer 2 are alternately stacked, and the outermost layer is controlled to be the piezoelectric thin layer 1...

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Abstract

The invention provides a preparation method of piezoelectric fiber composite materials and piezoelectric fiber composite materials, and relates to the technical field of functional materials. The preparation method of piezoelectric fiber composite materials includes: carrying out unpolarized piezoelectric composite structures along the stacking direction. Cut to obtain a piezoelectric composite module; cover the cutting surface of the piezoelectric composite module with electrodes and perform polarization to obtain a polarized piezoelectric composite module; place several polarized piezoelectric composite modules along a vertical axis perpendicular to the cutting surface Stack and arrange in the direction, and coat the adjacent surfaces with polymer glue to obtain a second laminated structure; solidify the second laminated structure to obtain a polarized piezoelectric composite structure, which solves the problem of traditional piezoelectric During the preparation process of fiber composite materials, the polarization of piezoelectric fibers is uneven, which makes it difficult to fully polarize, thus reducing the flexibility and stability of composite materials.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a preparation method of a piezoelectric fiber composite material and the piezoelectric fiber composite material. Background technique [0002] Piezoelectric composite material is a kind of intelligent composite material based on the mutual coupling between electrical energy and mechanical energy. It has the characteristics of excellent piezoelectric performance of piezoelectric crystal material and flexibility of polymer matrix. [0003] There are many types of piezoelectric composite materials. Piezoelectric ceramic fiber composite materials are composed of piezoelectric ceramic fibers and polymer matrix, which not only retains the advantages of high sensitivity and high frequency response of piezoelectric crystal materials, but also overcomes the limitations of piezoelectric crystal materials Due to the shortcomings of high brittleness and poor flexibility, the mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/08H01L41/18H01L41/37H10N30/00H10N30/092H10N30/85
Inventor 杨雄王锋付争兵丁瑜杜军
Owner HUBEI ENG UNIV
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