Method for preparing brand-new dielectric composite material

A composite material and dielectric technology, which is applied in the field of preparing a new dielectric composite material, to achieve the effect of high orientation, high porous layered structure, and convenient regulation

Inactive Publication Date: 2019-04-16
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many defects in the current methods of regulating the distribution of ceramic fillers, and it is urgent to provide a method for preparing dielectric composites that is stable, reliable, highly repeatable, and can be mass-produced, and the ceramic fillers are evenly distributed.

Method used

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  • Method for preparing brand-new dielectric composite material
  • Method for preparing brand-new dielectric composite material
  • Method for preparing brand-new dielectric composite material

Examples

Experimental program
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Embodiment

[0040] Such as Figure 5 shown, including the following steps:

[0041] (1) Prepare barium titanate slurry. Weigh a certain amount of deionized water, BaTiO 3 Powder and BaTiO 3 Powder 1wt% dispersant, mix, prepare BaTiO respectively 3 Three groups of slurries with volume ratios of 10vol%, 20vol%, and 30vol%, respectively. After ball milling for 24 hours, add BaTiO to the above slurry 3 Powder 1wt% binder solution, stirred slowly for at least 12 hours. Then carry out defoaming treatment: add a few drops of defoaming agent to the obtained slurry, mix well and put it into a vacuum drying oven to evacuate. The consumption of described defoamer is BaTiO 3 0.1% of powder mass.

[0042] Described defoamer is the defoamer such as alcohols, esters, as methyl alcohol, ethylene glycol, isopropanol, sec-butanol, n-octanol, tributyl phosphate etc., for the convenience of operation, the present embodiment uses is n-butanol.

[0043] Described dispersant is phosphate, phosphate do...

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Abstract

The invention belongs to the field of dielectric composite materials, and particularly relates to a method for preparing a brand-new dielectric composite material. The method specifically comprises the steps of constructing a layered porous ceramic structure which is directionally arranged by means of a freezing casting method, and filling the layered porous ceramic structure with a polymer to obtain the required dielectric composite material. According to the method, the freezing casting method and the preparation of the dielectric composite material are innovatively combined, and the directional, layered and porous material is simply and effectively obtained. Since solvents for preparing slurry are diversified, the method is suitable for ceramic, metal and other material systems; meanwhile, the technology parameters are simple, regulation is convenient, and the porous layered structure with high directionality can be achieved.

Description

technical field [0001] The invention belongs to the field of dielectric composite materials, and in particular relates to a method for preparing a brand new dielectric composite material. Background technique [0002] In recent years, traditional fossil fuels have been increasingly consumed and the environment has continued to deteriorate. The severe energy situation has aroused people's attention and attention to clean and renewable energy. As high-efficiency energy storage devices, solar cells, fuel cells, lithium batteries, and capacitors have become research hotspots. Among them, capacitors have more important practical value in the fields of smart grid and high-energy weapons (laser guns, radars) due to their advantages of high power density, fast discharge rate, and low production cost. However, the low energy density severely limits the development of high-power capacitors. Therefore, how to improve its energy density and efficiency is of great significance for furt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/24C04B35/468
Inventor 罗行郭茹张斗马玉鹏黄玉娟
Owner CENT SOUTH UNIV
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