Preparation method of metamaterial medium substrate
A technology of dielectric substrates and metamaterials, applied in the field of metamaterials, can solve the problem that dielectric substrates do not have electromagnetic modulation function, etc., and achieve the effect of expanding functional applications
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Embodiment 1
[0026] A method for preparing a metamaterial dielectric substrate, the dielectric substrate adopts a porous ceramic substrate, comprising the following steps:
[0027] a. Prepare polyvinylidene fluoride solutions with mass fractions of 0.3%, 0.6%, 1%, and 2%, and use N,N-dimethylacetamide as the solvent;
[0028] b. Form a layer of 0.3% polyvinylidene fluoride solution liquid film on the porous ceramic substrate by scraping the film, and the polyvinylidene fluoride solution penetrates into the porous ceramic substrate;
[0029] c. Put the porous ceramic substrate in an oven and dry it at 60°C, so that the vinylidene fluoride infiltrated into the porous ceramic substrate is cross-linked at high temperature to form a vinylidene fluoride resin, and the solvent is volatilized;
[0030] d. Set a back-shaped mold on the dried porous ceramic substrate, and add a polyvinylidene fluoride solution with a mass fraction of 0.6% in the back-shaped mold to form a back-shaped polyvinylidene ...
Embodiment 2
[0036] A method for preparing a metamaterial dielectric substrate, the dielectric substrate adopts a porous ceramic substrate, comprising the following steps:
[0037] a. prepare polysulfone solutions with mass fractions of 0.2%, 0.4%, 0.8%, and 1%, and use nitrogen-nitrogen dimethylformamide as the solvent;
[0038] b. forming a layer of polysulfone solution liquid film with a mass fraction of 1% on the porous ceramic substrate by scraping the film, and the polysulfone solution penetrates into the porous ceramic substrate;
[0039] c. Put the porous ceramic substrate in an oven and dry it at 75°C, so that the polysulfone infiltrated into the porous ceramic substrate is cross-linked at high temperature to form a vinylidene fluoride resin, and the solvent is volatilized;
[0040] d. A mold is set on the dried porous ceramic substrate, and a polysulfone solution with a mass fraction of 0.8% is added into the mold to form a circular polysulfone solution liquid film in a local are...
Embodiment 3
[0046] A method for preparing a metamaterial dielectric substrate, the dielectric substrate adopts a porous composite ceramic metal substrate, comprising the following steps:
[0047]a. prepare polyethersulfone solutions with mass fractions of 0.1%, 0.3%, 0.5%, and 1%, and use nitrogen nitrogen dimethylformamide as the solvent;
[0048] b. Place the porous composite ceramic metal substrate on the substrate of the flat-plate scraping machine, then add polyethersulfone solution on the porous composite ceramic-metal substrate and then scrape the film through the flat-plate scraping machine. A layer of polyethersulfone solution liquid film with a mass fraction of 0.1% is formed on the ceramic substrate, and the polyethersulfone solution penetrates into the porous composite ceramic metal substrate;
[0049] c. Place the porous composite ceramic-metal substrate in an oven and dry it at 70°C, so that the polyethersulfone infiltrated into the porous composite ceramic-metal substrate i...
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