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Low-loss fluorine-containing polymer multilayer dielectric film and preparation method and application thereof

A technology of polymer layer and polymer, which is applied in the direction of fixed capacitor dielectric, laminated capacitor, film/thick film capacitor, etc., can solve the problems of low dielectric constant and difficult to meet application requirements, so as to improve energy storage density and solve Energy storage density and the effect of increasing the breakdown field strength

Pending Publication Date: 2022-03-01
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The commonly used biaxially oriented polypropylene (BOPP film) has a very low dielectric constant, which is difficult to meet the growing application requirements.

Method used

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  • Low-loss fluorine-containing polymer multilayer dielectric film and preparation method and application thereof
  • Low-loss fluorine-containing polymer multilayer dielectric film and preparation method and application thereof
  • Low-loss fluorine-containing polymer multilayer dielectric film and preparation method and application thereof

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Embodiment 1

[0049] A method for preparing a fluoropolymer composite multilayer dielectric film, comprising the steps of:

[0050] S1: According to the designed solution concentration, calculate the required amount of medicines and reagents, and weigh the medicines and reagents;

[0051] S2: Add the solvent to the beaker first, then add the weighed reagent and continue to stir. Stir at a faster speed in the initial stage. After the reagent is completely dissolved, reduce the stirring speed and ultrasound at the same time;

[0052] S3: Set film forming conditions and level the heating plate. Set the height of the scraper and the dissolving temperature, and cast a layer of fluoropolymer / organic molecular semiconductor film on the biaxially oriented polypropylene film;

[0053] S4: Evaporating a layer of metal electrodes on the film prepared in step S3;

[0054] In this example, the drugs selected in step S1 are P(VDF-TrFE-CFE) and PCBM.

[0055] In this example, step S1 prepares the solut...

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Abstract

The invention discloses a low-loss fluorine-containing polymer multilayer dielectric film as well as a preparation method and application thereof. Belongs to the technical field of polymer films. The method comprises the following specific steps: 1, preparing an organic molecule semiconductor solution and a fluorine-containing polymer solution; mixing the two solutions according to the ratio of (0.5-1.5): (98.5-99.5), stirring, and carrying out ultrasonic treatment for 24 hours to obtain a mixed solution of the fluorine-containing polymer / organic molecule semiconductor; casting the obtained fluorine-containing polymer / organic molecule semiconductor mixed solution on two sides of a low-loss polymer, and heating to remove the solvent to obtain a low-loss fluorine-containing polymer multilayer dielectric film; and metal electrodes are evaporated on the two sides of the obtained low-loss fluorine-containing polymer multilayer dielectric film. The interlayer composite dielectric film is widely applied to a thin-film capacitor, the loss of the low-loss fluorine-containing polymer multilayer dielectric film is obviously reduced, meanwhile, relatively good energy storage density and charge-discharge efficiency are kept, and the interlayer composite dielectric film is a dielectric film with excellent performance.

Description

technical field [0001] The invention belongs to the technical field of polymer films, and relates to a low-loss fluorine-containing polymer multilayer dielectric film, a preparation method and an application scene thereof. Background technique [0002] As an energy storage device with ultra-high power density, organic electrostatic capacitors occupy an irreplaceable position in the fields of pulse power supply systems, new energy vehicles, and high-voltage transmission networks. However, with the advancement of device miniaturization and weight reduction, higher requirements are placed on the energy storage properties of polymer dielectric materials. Due to the problems of structural stress and brittleness of inorganic dielectric materials, it is difficult to make capacitors with large size and large capacity. Organic media, especially polymer films, have attracted widespread attention due to their high energy storage density, high breakdown field strength, low dielectric l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/33H01G4/14
CPCH01G4/33H01G4/14
Inventor 赵月涛孟祥硕蔡博黄贺贺陆滢
Owner JIANGSU UNIV OF SCI & TECH
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