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Preparation method for 3D printing polyvinylidene fluoride piezoelectric film under uniform electric field

A polyvinylidene fluoride piezoelectric and polyvinylidene fluoride technology is applied in the manufacture/assembly, processing and manufacturing of piezoelectric/electrostrictive devices, manufacturing auxiliary devices, etc. The writing track program is controllable, the performance is stable and consistent, and the fibers are arranged in an orderly manner

Active Publication Date: 2019-04-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the printing process using this method, there are the same problems, that is, there is an extremely uneven hemispherical electric field between the needle and the printing substrate, and the electric field is in the process of continuous movement, which affects the transformation of the β crystal form in the PVDF film and generation, the non-uniformity of film polarization, etc. have a great negative impact

Method used

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  • Preparation method for 3D printing polyvinylidene fluoride piezoelectric film under uniform electric field
  • Preparation method for 3D printing polyvinylidene fluoride piezoelectric film under uniform electric field
  • Preparation method for 3D printing polyvinylidene fluoride piezoelectric film under uniform electric field

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Use Soildworks software to build a 20mm×20mm×0.5mm piezoelectric film 3D model, and use Cura software to slice the established 3D model. The slice parameters are: layer thickness 0.01mm, number of printing layers is 50 layers, and the needle tip moving speed is set to 30mm / s, the movement track is non-woven fabric weaving; weigh 1.5g polyvinylidene fluoride powder and dissolve it in 8.5g N-methylpyrrolidone, seal and ultrasonically disperse for 15min; after the dispersion is uniform, weigh 0.05g tetrabutylammonium bromide and add Put in the above PVDF solution and seal it for ultrasonic dispersion for 5 minutes, and finally add 1.5g of acetone, seal it for ultrasonic dispersion for 10 minutes, and obtain a clear and transparent printing solution. The printing device used is as follows: figure 1As shown in (a); the temperature used for the heating plate in the device is 80°C; draw 3mL of printing liquid with a syringe before printing, and assemble a No. 24 needle; connec...

Embodiment 2

[0038] Use Soildworks software to build a 20mm×20mm×0.5mm piezoelectric film 3D model, and use Cura software to slice the established 3D model. The slice parameters are: layer thickness 0.01mm, number of printing layers is 50 layers, and the needle tip moving speed is set to 30mm / s, the movement track is non-woven fabric weaving; weigh 1.5g polyvinylidene fluoride powder and dissolve in 8.5g N-methylpyrrolidone, seal and ultrasonically disperse for 15min, after the dispersion is uniform, weigh 0.05g tetrabutylammonium bromide and add Put in the above PVDF solution and seal it for ultrasonic dispersion for 5 minutes, and finally add 1.5g of acetone, seal it for ultrasonic dispersion for 10 minutes, and obtain a clear and transparent printing solution. The printing device used is as follows: figure 1 As shown in (b): draw 3mL printing liquid with a syringe, and assemble the needle; insert a square aluminum sheet into the printing needle, fix it at a distance of 15mm from the pri...

Embodiment 3

[0041] Use Soildworks software to build a 20mm×20mm×0.5mm piezoelectric film 3D model, and use Cura software to slice the established 3D model. The slice parameters are: layer thickness 0.01mm, number of printing layers is 50 layers, and the needle tip moving speed is set to 30mm / s, the movement track is non-woven fabric weaving; weigh 1.5g polyvinylidene fluoride powder and dissolve in 8.5g N-methylpyrrolidone, seal and ultrasonically disperse for 15min, after the dispersion is uniform, weigh 0.05g tetrabutylammonium bromide and add Put in the above PVDF solution and seal it for ultrasonic dispersion for 5 minutes, and finally add 1.5g of acetone, seal it for ultrasonic dispersion for 10 minutes, and obtain a clear and transparent printing solution. The printing device used is as follows: figure 1 As shown in (c), the temperature of the heating plate in the device is 80°C; draw 3mL of printing liquid with a syringe, assemble the needle, insert a square aluminum sheet into the...

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Abstract

The invention belongs to the field of preparation of piezoelectric film materials, and relates to a preparation method for 3D printing a PVDF piezoelectric film under a uniform electric field. The printing device comprises a needle tube, a printing needle head, a square aluminum sheet, a printing substrate, a copper plate, a heating plate, an XYZ triaxial moving mechanism and a power supply, wherein the printing substrate, the copper plate and the heating plate are sequentially arranged from top to bottom. The positive electrode of the high-voltage direct-current power supply is connected withthe needle head, and the negative electrode of the high-voltage direct-current power supply is connected with the copper plate, so that the PVDF film is always in the uniform electric field environment in the printing process; establishing a piezoelectric film 3D model and carrying out slicing treatment; preparing PVDF printing ink; printing a piezoelectric film in a 3D printing environment witha uniform electric field. According to the preparation method for 3D printing the PVDF piezoelectric film under the uniform electric field, the PVDF film can be printed smoothly under the voltage of 5KV, so that the PVDF film is always in a uniform electric field in the printing process; the generation and polarization of beta phase can be carried out simultaneously; the film is uniform in polarization and stable in performance; and the content of the beta phase in the film reaches 59.26%.

Description

technical field [0001] The invention belongs to the field of electrode material preparation, and in particular relates to a preparation method for 3D printing a polyvinylidene fluoride (PVDF) piezoelectric film under a uniform electric field. Background technique [0002] In research related to intelligent structures such as aerospace flight control, bionic robot tactile sensing, air pollution detection, medical device control, and modern military equipment, there is an urgent need for thin, soft, and highly sensitive touch sensors that can be bent arbitrarily. Perceive the external environment and stimuli, such as flowing wind, water flow, bearing force, and even instantaneous changes in human heartbeat, pulse, blood flow rate, etc., and obtain important parameters such as strain, displacement, pressure, and electrical signals. The key to realizing this task depends on flexible, deformable high-performance smart materials. [0003] Compared with traditional piezoelectric m...

Claims

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Application Information

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IPC IPC(8): H01L41/45B29C64/106B29C64/364B33Y10/00B33Y40/00B29K27/00
CPCB29C64/106B29C64/364B33Y10/00B33Y40/00B29K2027/16H10N30/098
Inventor 陈彩凤廖林晨王安东蔡飞翔钱继龙
Owner JIANGSU UNIV
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