Preparation method of organic-inorganic ferroelectric polymer composite film

A composite film and polymer technology, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, material selection for piezoelectric devices or electrostrictive devices, circuits, etc., to achieve ferroelectric performance improvement and easy process The effect of simple control and preparation process

Pending Publication Date: 2022-03-11
ZHEJIANG LAB
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the shortcomings of the current ferroelectric composite materials, which usually use disordered ferroelectric polymers and polycrystalline ferroelectric ceramics, fibers, etc., the purpose of this study is to find a simple and effective preparation of a new type of highly oriented organic- The method of inorganic ferroelectric polymer composite thin film is expected to further improve the functionality

Method used

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  • Preparation method of organic-inorganic ferroelectric polymer composite film
  • Preparation method of organic-inorganic ferroelectric polymer composite film
  • Preparation method of organic-inorganic ferroelectric polymer composite film

Examples

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Embodiment 1

[0021] A method for preparing an organic-inorganic ferroelectric polymer composite film, comprising the following steps:

[0022] 1) Dissolve 1.973g of P(VDF-TrFE) powder in 20ml of tetrahydrofuran, and form a homogeneous solution with a mass fraction of 10% after magnetic stirring;

[0023] 2) 0.395g of ground single crystal PbTiO 3 The mesoporous material powder is added to the homogeneous solution prepared in step 1), and further magnetically stirred to obtain a mixed solution;

[0024] 3) Take the mixed solution obtained in step 2) and drop it on the graphene / copper (122) substrate, place it on a homogenizer for spin-coating, first spin-coat at a speed of 1000rpm for 3s, and then spin-coat at a speed of 3000rpm for 30s; The graphene / copper (122) substrate surface has a one-dimensional periodic potential;

[0025] 4) Finally, put the spin-coated substrate into a vacuum oven for annealing at 180° C. for 2 hours in a vacuum to obtain an organic-inorganic ferroelectric polym...

Embodiment 2

[0029] A method for preparing an organic-inorganic ferroelectric polymer composite film, comprising the following steps:

[0030] 1) Dissolve 1.973g of P(VDF-TrFE) powder in 20ml of tetrahydrofuran, and form a homogeneous solution with a mass fraction of 10% after magnetic stirring;

[0031] 2) 0.197g ground single crystal PbTiO 3 The mesoporous material powder is added to the homogeneous solution prepared in step 1), and further magnetically stirred to obtain a mixed solution;

[0032] 3) Take the mixed solution obtained in step 2) and drop it on the graphene / copper (122) substrate, place it on a homogenizer for spin-coating, first spin-coat at a speed of 1000rpm for 3s, and then spin-coat at a speed of 3000rpm for 30s; The graphene / copper (122) substrate surface has a one-dimensional periodic potential;

[0033] 4) Finally, put the spin-coated substrate into a vacuum oven for annealing at 180° C. for 2 hours in vacuum to obtain an organic-inorganic ferroelectric polymer co...

Embodiment 3

[0036] A method for preparing an organic-inorganic ferroelectric polymer composite film, comprising the following steps:

[0037] 1) Dissolve 0.47g of P(VDF-TrFE) powder in 10ml of tetrahydrofuran, and form a uniform solution after magnetic stirring;

[0038] 2) 0.0235g ground single crystal PbTiO 3 The mesoporous material powder is added to the homogeneous solution prepared in step 1), and further magnetically stirred to obtain a mixed solution;

[0039] 3) Take the mixed solution obtained in step 2) and drop it on the graphene / copper (122) substrate, place it on a homogenizer for spin coating, first spin coating at a speed of 1000rpm for 3s, and then spin coating at a speed of 3000rpm for 30s; The graphene / copper (122) substrate surface has a one-dimensional periodic potential;

[0040] 4) Finally, put the spin-coated substrate into a vacuum oven for annealing at 180° C. for 2 hours in vacuum to obtain an organic-inorganic ferroelectric polymer composite film.

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Abstract

The invention discloses a preparation method of an organic-inorganic ferroelectric polymer composite film. The method comprises the following steps: by taking a graphene/copper high-index surface with one-dimensional periodic potential on the surface as a substrate, uniformly dissolving vinylidene fluoride-trifluoroethylene copolymer (P (VDF-TrFE)) powder in a tetrahydrofuran organic solvent, then adding a ground single crystal lead titanate (PbTiO3) mesoporous material, fully stirring, spin-coating a proper amount of solution on the substrate, and drying to obtain the graphene/copper composite mesoporous material. And carrying out vacuum drying and annealing treatment to obtain the organic-inorganic ferroelectric polymer composite film. The composite film prepared by the method is good in orientation, shows excellent ferroelectric properties, and has wide application prospects in flexible energy transducers, sensing devices and ferroelectric storage devices.

Description

technical field [0001] The invention relates to the field of organic-inorganic ferroelectric composite materials, in particular to a method for preparing an organic-inorganic ferroelectric polymer composite film. Background technique [0002] Ferroelectric materials exhibit rich physical and chemical properties, and have received extensive attention in the fields of sensing, energy storage, electronics, catalysis, and energy. In practical device applications, such as smart sensor devices and medical imaging devices, in order to better receive signals, the sensing surface is often curved, which puts high demands on the design of flexible sensing materials. Among them, vinylidene fluoride-trifluoroethylene copolymer (P(VDF-TrFE)) has the best piezoelectric performance in polymer piezoelectric materials due to its excellent flexibility, corrosion resistance, low acoustic impedance and Becoming one of the materials that has the potential to meet both high device performance and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/37H01L41/317H01L41/18
CPCH10N30/852H10N30/077H10N30/092
Inventor 周迪逵施钧辉任召辉陈睿黾刘开辉韩高荣
Owner ZHEJIANG LAB
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