Gradient piezoelectric fiber composite material and preparation method thereof

A fiber composite material and piezoelectric fiber technology, which is applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc., can solve the problem of difficulty in maintaining the main structure vibration or Stable and continuous deformation control, distortion point or area of ​​the main structure, increasing the complexity of the drive power system, etc., to achieve the effects of easy operation and use, stable product performance, and short production cycle

Active Publication Date: 2016-03-16
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The degree of vibration or deformation control required in the deformation area of ​​the large main structure is not the same. In order to maintain the continuity of the vibration or deformation control of the main structure, it is necessary to apply different driving voltages to the laid multi-piece piezoelectric fiber composite materials, the

Method used

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  • Gradient piezoelectric fiber composite material and preparation method thereof
  • Gradient piezoelectric fiber composite material and preparation method thereof
  • Gradient piezoelectric fiber composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0030] A gradient piezoelectric fiber composite material, which is composed of two interdigitated electrodes, piezoelectric fibers and polymers, the piezoelectric fibers and polymers are located between the upper and lower interdigitated electrodes, and the interdigitated The positive and negative fingers of the electrode are arranged alternately and equally spaced, and the upper and lower interdigitated electrodes are mirror-symmetrical. The total volume percentage of the piezoelectric fiber and the polymer is 80.6% of the piezoelectric fiber. , high molecular polymer 19.4%, piezoelectric fibers and high molecular polymers are arranged alternately, the volume fraction of a single piezoelectric fiber changes continuously along the transverse direction of the gradient piezoelectric fiber composite material, and along the transverse direction of the piezoelectric fiber composite material direction, the width of a single piezoelectric fiber gradually decreases, showing that the vo...

Embodiment 2

[0037] A gradient piezoelectric fiber composite material, which is composed of two interdigitated electrodes, piezoelectric fibers and polymers, the piezoelectric fibers and polymers are located between the upper and lower interdigitated electrodes, and the interdigitated The positive and negative fingers of the electrode are arranged alternately and equidistantly, and the upper and lower interdigitated electrodes are mirror-symmetrical. The total volume percentage of the piezoelectric fiber and the polymer is 72.5% of the piezoelectric fiber. , high molecular polymer 27.5%, piezoelectric fibers and high molecular polymers are arranged alternately, the volume fraction of a single piezoelectric fiber changes continuously along the transverse direction of the gradient piezoelectric fiber composite material, and along the transverse direction of the piezoelectric fiber composite material direction, the width of a single piezoelectric fiber first increases and then decreases, showi...

Embodiment 3

[0044] A gradient piezoelectric fiber composite material, which is composed of two interdigitated electrodes, piezoelectric fibers and polymers, the piezoelectric fibers and polymers are located between the upper and lower interdigitated electrodes, and the interdigitated The positive and negative fingers of the electrode are arranged alternately and equidistantly, and the upper and lower interdigitated electrodes are mirror-symmetrical. The total volume percentage of the piezoelectric fiber and the polymer is 67.3% of the piezoelectric fiber. , high molecular polymer 32.7%, piezoelectric fibers and high molecular polymers are arranged alternately, the volume fraction of a single piezoelectric fiber changes continuously along the transverse direction of the gradient piezoelectric fiber composite material, and along the transverse direction of the piezoelectric fiber composite material direction, the width of a single piezoelectric fiber first decreases and then increases, showi...

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Abstract

The invention discloses a gradient piezoelectric fiber composite material, which comprises two interdigitated electrodes, piezoelectric fibers and a high-molecular polymer, wherein the volume percent of the piezoelectric fibers is 45%-90%; and the volume percent of the high-molecular polymer is 10%-55%; the piezoelectric fibers and the high-molecular polymer are alternately arranged; and the volume fraction of the single piezoelectric fiber is in a continuous gradient change along with the transverse direction of the gradient piezoelectric fiber composite material. The gradient piezoelectric fiber composite material disclosed by the invention has high flexibility and excellent piezoelectric drive characteristic; the continuously changing drive deformation capacity can be provided in the transverse direction of the composite material; and the gradient piezoelectric fiber composite material integrates the piezoelectric fibers, the polymer and the interdigitated electrodes into a whole, and is high in integration level and convenient to operate and use. In addition, the gradient piezoelectric fiber composite material is prepared by a cutting-filling method, and is simple in process, low in cost, short in production cycle and stable in product performance.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric composite materials, and relates to a gradient piezoelectric fiber composite material and a preparation method thereof. Background technique [0002] The intelligent structure that appeared in the 1990s has changed people's inherent understanding of traditional materials and structures. After more than 20 years of development, the technical field of smart materials and smart structures has made great progress, and has become one of the important technical means to perceive and drive the main structure. As the core component of smart structures, smart materials can respond to changes in the external environment and internal conditions to adapt to different needs. Among them, piezoelectric ceramics have become a class of smart materials widely used due to their high structural rigidity, large driving force, fast electromechanical response conversion, and the ability to interact with dynamic s...

Claims

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Application Information

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IPC IPC(8): H01L41/187H01L41/22
CPCH10N30/01H10N30/8554
Inventor 林秀娟黄世峰程新
Owner UNIV OF JINAN
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