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A kind of preparation method of polyvinylidene fluoride/zinc oxide quantum dot composite film

A technology of polyvinylidene fluoride and composite film, which is applied in the field of preparation of polyvinylidene fluoride/zinc oxide quantum dot composite film, can solve problems such as lattice defects and difficult realization of film strong electric field polarization, and achieve simple operation, high parameter Accurate and informative, technologically advanced effects

Active Publication Date: 2017-10-13
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase the content of the β phase of PVDF, the most effective method is stretching, but in the stretching process, lattice defects are often introduced, and it is difficult to achieve strong electric field polarization of the film.

Method used

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  • A kind of preparation method of polyvinylidene fluoride/zinc oxide quantum dot composite film
  • A kind of preparation method of polyvinylidene fluoride/zinc oxide quantum dot composite film
  • A kind of preparation method of polyvinylidene fluoride/zinc oxide quantum dot composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Selected chemical substances and materials

[0028]

[0029] (2) Preparation of zinc oxide quantum dots by alcoholysis

[0030] The preparation is carried out in a beaker, the beaker is placed on a magnetic stirrer, and a stirring bar is placed in the beaker;

[0031] ①Preparation of zinc acetate precursor solution

[0032] Weigh 0.14g (0.0006mol) of zinc acetate dihydrate;

[0033] Measure 20ml of absolute ethanol;

[0034] Add it into a beaker and stir it with a stirrer at room temperature for 30 minutes to make it fully dissolve and form a colorless transparent solution;

[0035] ②Preparation of Potassium Hydroxide Solution

[0036] Weigh potassium hydroxide 0.07g (0.00125mol, 1:2);

[0037] Measure 20ml of absolute ethanol;

[0038] Add it to a beaker, stir it with a stirrer at room temperature for 10 minutes, make it fully dissolve, and form a colorless and transparent solution;

[0039] ③ mixed reaction

[0040] Quickly inject the prepared sodium hy...

Embodiment 2

[0071] (1) Selected chemical substances and materials

[0072] The chemical substances and materials required for the preparation should be selected, and the quality, purity and precision should be controlled:

[0073]

[0074] (2) Preparation of zinc oxide quantum dots by alcoholysis

[0075] The preparation is carried out in a beaker, the beaker is placed on a magnetic stirrer, and a stirring bar is placed in the beaker;

[0076] ①Preparation of zinc acetate precursor solution

[0077] Weigh 0.14g (0.0006mol) of zinc acetate dihydrate;

[0078] Measure 20ml of absolute ethanol;

[0079] Add it into a beaker and stir it with a stirrer at room temperature for 30 minutes to make it fully dissolve and form a colorless transparent solution;

[0080] ②Preparation of Potassium Hydroxide Solution

[0081] Weigh potassium hydroxide 0.034g (0.0006mol, 1:1);

[0082] Measure 20ml of absolute ethanol;

[0083] Add it to a beaker, stir it with a stirrer at room temperature for ...

Embodiment 3

[0116] (1) Selected chemical substances and materials

[0117]

[0118] (2) Preparation of zinc oxide quantum dots by alcoholysis

[0119] The preparation is carried out in a beaker, the beaker is placed on a magnetic stirrer, and a stirring bar is placed in the beaker;

[0120] ①Preparation of zinc acetate precursor solution

[0121] Weigh 0.14g (0.0006mol) of zinc acetate dihydrate;

[0122] Measure 20ml of absolute ethanol;

[0123] Add it into a beaker and stir it with a stirrer at room temperature for 30 minutes to make it fully dissolve and form a colorless transparent solution;

[0124] ②Preparation of Potassium Hydroxide Solution

[0125] Weigh potassium hydroxide 0.1g (0.0018mol);

[0126] Measure 20ml of absolute ethanol;

[0127] Add it to a beaker, stir it with a stirrer at room temperature for 10 minutes, make it fully dissolve, and form a colorless and transparent solution;

[0128] ③ mixed reaction

[0129] Quickly inject the prepared sodium hydroxide s...

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Abstract

The invention relates to the field of preparation of flexible composite piezoelectric materials, in particular to a method for preparing a polyvinylidene fluoride / zinc oxide quantum dot composite film, in which a polyvinylidene fluoride solution is injected into a dispersion liquid of zinc oxide quantum dots, and then eight Vinyl octasilsesquioxane is mixed with ultrasound to prepare a translucent uniform solution; then the polyvinylidene fluoride / zinc oxide quantum dot composite film is obtained by solution casting and vacuum drying. The preparation method of the polyvinylidene fluoride / zinc oxide quantum dot composite film described in the present invention has a crystallinity of up to 55% of the composite film, and the preparation method is advanced in technology, easy to operate, accurate and detailed in parameters, and pollution-free. Ideal method for preparing flexible piezoelectric materials.

Description

technical field [0001] The invention relates to the field of preparation of flexible composite piezoelectric materials, in particular to a preparation method of a polyvinylidene fluoride / zinc oxide quantum dot composite film. Background technique [0002] When mechanical stress is applied to some materials, charges will appear on the surface of the material, and the amount of charges is proportional to the stress. This material is called a piezoelectric material. As a flexible piezoelectric material, polyvinylidene fluoride (PVDF) piezoelectric film has excellent characteristics such as good flexibility, high mechanical strength, easy matching of acoustic impedance, wide frequency response range, resistance to chemical and oily corrosion, and can be processed into The use of large areas and complex shapes opens up new fields of application for piezoelectric materials. [0003] PVDF can be crystallized in the molten state to obtain α-phase crystals, but because the total dip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L27/16C08K9/04C08K3/22
Inventor 李洁韩晶夏凯李迎春李曦
Owner ZHONGBEI UNIV