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Preparation method and application for polymer-based piezoelectric bimorph

An electric twin, polymer technology, applied in the manufacture/assembly, coating and other directions of piezoelectric/electrostrictive devices to achieve the effect of improving piezoelectric performance, enhancing deformation, and enhancing the ability to drive deformation

Active Publication Date: 2018-10-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of using piezoelectric polymer to realize the driving deformation of the film substrate, and to provide a preparation method and application of a polymer-based piezoelectric bimorph

Method used

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  • Preparation method and application for polymer-based piezoelectric bimorph
  • Preparation method and application for polymer-based piezoelectric bimorph
  • Preparation method and application for polymer-based piezoelectric bimorph

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specific Embodiment approach 1

[0015] Embodiment 1: This embodiment is a method for preparing a polymer-based piezoelectric bimorph, which is specifically completed in the following steps:

[0016] 1. Preparation of non-polarized PVDF film: ①. Dissolve polyvinylidene fluoride in an organic solvent to prepare a mixed solution. The mass fraction of polyvinylidene fluoride in the mixed solution is 15% to 25%; ②. The solution was stirred, left still and ultrasonically degassed sequentially under the condition of avoiding light and room temperature; ③, repeat step 1 and ② for 2 to 4 times to obtain a uniform solution; ④, put the uniform solution into a vacuum mixer, Stir at room temperature in the dark for 1h to 1.5h to obtain the solution for eliminating air bubbles; ⑤. Ultrasonic debubble the solution for 8 minutes to 12 minutes, and then stir for 8 minutes to 12 minutes; In the petri dish, let it stand for 8 minutes to 12 minutes, and then put it in a constant temperature drying oven to dry, that is, the PVDF...

specific Embodiment approach 2

[0020] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step one (2), the mixed solution is first stirred at a stirring speed of 400 ~ 500r / min for 30min under the condition of avoiding light and room temperature, and then left standstill 10 minutes, and finally ultrasonic defoaming treatment was performed at an ultrasonic power of 100W for 5 minutes to 8 minutes. Others are the same as the first embodiment.

specific Embodiment approach 3

[0021] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1 ⑥, dry at a constant temperature of 60-70°C for 1 hour, then raise the temperature to 140°C, and keep the temperature at 140°C Dry for 2h. Others are the same as those in Embodiment 1 or 2.

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Abstract

Provided are a preparation method and application for polymer-based piezoelectric bimorph. The purpose of the method is to solve the problem that driving deformation of a film substrate is achieved byusing a piezoelectric polymer. The preparation method comprises the steps of first, preparing non-polarized PVDF-based film; second, preparing and coating a flexible electrode to obtain a PVDF film electrode; third, polarizing to obtain PVDF piezoelectric film; four, assembling to obtain the polymer-based piezoelectric bimorph. The polymer-based piezoelectric bimorph is used for making a drivablematerial. The method has the advantages that based on a piezoelectric polymer, a piezoelectric bimorph form is constructed, and not only the ability of the flat film to control deformation is achieved, but also the effect of the flat film on controlling deformation is increased.

Description

technical field [0001] The invention relates to a preparation method and application of a piezoelectric bimorph. Background technique [0002] The aerospace industry is a strategic industry that marks a country's national defense strength, cutting-edge technology level and comprehensive national strength. In recent years, space deployable components are new types of sail components used in spacecraft in recent years, such as deployable solar sails and inflatable film deployable antennas. Among them, the solar sail is a new space vehicle powered by solar photons, which has the characteristics of light weight, strong carrying capacity and energy saving. When the shape and inclination of the solar sail are appropriate, the aircraft can realize low-cost deep space exploration. The attitude change of the deployed solar sail is due to the deformation of the surface of the sail, and the flight attitude can be changed by adjusting the control system on the surface of the solar sai...

Claims

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Application Information

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IPC IPC(8): H01L41/27C08J7/04C08J5/18C09D123/08C09D7/61
CPCC08J5/18C08K3/08C08J2423/08C08J2327/16C08J7/0427H10N30/05
Inventor 刘一志孙毅曾凡林
Owner HARBIN INST OF TECH
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