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Preparation method of composite material and metamaterial

A technology of composite materials and organic polymers, applied in the field of metamaterials, can solve the problems that the dielectric constant of composite materials cannot be made high and the resin is low, so as to achieve dielectric constant, good mechanical strength and flexibility, and realize adjustment Effect

Active Publication Date: 2014-08-13
KUANG CHI INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to ensure the machinability of the material, the content of resin should not be too low, even if the content of ferroelectric ceramics with high dielectric constant cannot be too high, which leads to the fact that the dielectric constant of the composite material cannot be made very high
At the same time, the high loss of the resin component and the ferroelectric ceramic component also determines the high loss of the composite material.

Method used

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  • Preparation method of composite material and metamaterial

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preparation example Construction

[0028] Fig. 1 is the preparation method flowchart of composite material of the present invention, mainly comprises the following steps:

[0029] a. Selecting an organic polymer material for preparing an organic polymer film by the immersion gel phase inversion method, dissolving the organic polymer material in the first solvent to form an organic polymer solution;

[0030] b. adding ceramic particles to the organic polymer solution, and obtaining a uniform and stable first dispersion after dispersion;

[0031] c. uniformly coating the first dispersion on the surface of a support to obtain a liquid organic polymer film;

[0032] d. Immerse the support together with the liquid organic polymer film into a second solvent, the second solvent cannot dissolve the organic polymer material and is miscible with the first solvent, the liquid organic A solid organic polymer film is formed after the polymer film is immersed in a gel phase inversion;

[0033] e. drying the obtained solid ...

Embodiment 1

[0038] Dissolve polyvinylidene fluoride (PVDF) in the solvent dimethylformamide (DMF), make a transparent solution by stirring, mix the modified lipophilic titanium dioxide nanoparticles with the above transparent solution and perform uniform dispersion treatment , to obtain the first dispersion that is mixed uniformly. At this time, according to the requirements of the dielectric constant of the composite material, it is known that the dielectric constant of polyvinylidene fluoride (PVDF) is 10, and the dielectric constant of titanium dioxide is 110. By adjusting the dielectric constant of titanium dioxide The added amount can be used to calculate the dielectric constant of the final composite material.

[0039]Apply the above first dispersion evenly to a smooth support surface to obtain a liquid polyvinylidene fluoride film; then immerse the obtained liquid polyvinylidene fluoride film together with the support in an ethanol solvent for 10-60 seconds Take it out, during the ...

Embodiment 2

[0042] Dissolve polyamide (PA) in the solvent dimethylacetamide (DMAC), make a transparent solution by stirring, mix the modified lipophilic alumina nanoparticles with the above transparent solution and perform uniform dispersion treatment, Obtain the first dispersion liquid that mixes homogeneously, at this moment, according to the dielectric constant size needs of composite material, the dielectric constant of known polyamide (PA) is 2.5-2.6, and the dielectric constant of aluminum oxide is 9.5-11.5, by The dielectric constant of the final composite material can be deduced by adjusting the amount of alumina particles added.

[0043] Dispersing lipophilic aluminum oxide nanoparticles into acetone to obtain a second dispersion with a certain content of nano-alumina particles, uniformly coating the first dispersion on a smooth support surface to obtain a liquid polyamide film; The obtained liquid polyamide film is immersed in the second dispersion together with the support body...

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Abstract

The invention provides a preparation method of composite material and a metamaterial. Base material of the metamaterial is an organic polymer membrane prepared by adopting an immersed gel phase inversion method, the organic polymer membrane has better mechanical strength and flexibility and can meet mechanical performance requirement of the metamaterial, and nano ceramic particles are uniformly scattered in a preparation process to regulate dielectric constant of the organic polymer membrane; since the ceramic particles have high dielectric constants and the organic polymer membrane has low dielectric constants, the whole dielectric constant of the composite material can be greatly improved by controlling addition of the ceramic particles, and regulation on the dielectric constant of a dielectric substrate made from the metamaterial is further realized.

Description

【Technical field】 [0001] The invention relates to the field of metamaterials, in particular to a preparation process of a metamaterial dielectric substrate. 【Background technique】 [0002] Metamaterials refer to some artificial composite structures or composite materials with extraordinary physical properties that natural materials do not have. Through the orderly design of the structure on the key physical scale of the material, the limitation of some apparent natural laws can be broken through, so as to obtain the supernormal material function beyond the ordinary nature inherent in nature. The properties and functions of metamaterials mainly come from their internal structures rather than the materials that make them up, so a lot of research work has been done to design and synthesize metamaterials. In 2000, Smith et al. of the University of California pointed out that the composite structure of periodically arranged metal wires and split-ring resonators (SRR) can realize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L81/06C08L27/16C08L1/12C08L77/00C08L33/20C08K3/22C08K3/36C08K3/34B32B5/00B32B37/06B32B37/10H01Q15/00
Inventor 刘若鹏赵治亚郭洁杨学龙
Owner KUANG CHI INST OF ADVANCED TECH