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SiO2 photonic crystal structure color coating and preparation process thereof

A photonic crystal and preparation process technology, applied in inorganic chemistry, non-metallic elements, chemical instruments and methods, etc., can solve the problems of poor bonding force of ceramic substrates, inconvenient storage, restricted use, etc., and achieve spherical integrity and low cost. , the effect of increasing the surface charge density

Inactive Publication Date: 2020-07-31
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structural color glazes developed at present generally have the disadvantages of poor bonding with ceramic substrates and inconvenient storage, which severely limits their application.

Method used

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  • SiO2 photonic crystal structure color coating and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take 50mL of absolute ethanol and divide it into two parts, one part is added with tetraethyl orthosilicate to make a 10Vol% tetraethyl orthosilicate ethanol solution, which is recorded as solution A; the other part is prepared according to the volume ratio of ammonia water and NaCl standard solution Add a total of 5.5ml of ammonia water and NaCl standard solution for 7:4 and record it as solution B; slowly add solution B to solution A, stir and react for 22 hours to obtain a stable suspension and centrifuge the resulting suspension to obtain modified SiO 2 suspension.

[0016] Ball mill 0.3% sodium tripolyphosphate, 1.2% carboxymethyl cellulose, and 98.5% boric acid glass frit mixture for 5 hours, ball: material: water at 2:1:1, sieve through 300 mesh and make the sieve residue less than 0.5 %, add deionized water to prepare the slurry and keep the water content at 40%.

[0017] Brush the glaze evenly with Al by screen printing 2 o 3 On the ceramic sheet, dry it at ...

Embodiment 2

[0020] Take 50mL of absolute ethanol and divide it into two parts, one part is added with tetraethyl orthosilicate to make a 9Vol% tetraethyl orthosilicate ethanol solution, which is recorded as solution A; Add a total of 5ml of ammonia water and NaCl standard solution for 7:4 and record it as solution B; slowly add solution B to solution A, stir and react for 20 hours to obtain a stable suspension and centrifuge the obtained suspension to obtain modified SiO 2 suspension.

[0021] Ball mill 0.4% sodium tripolyphosphate, 1.4% carboxymethyl cellulose, and 98.2% boric acid glass frit mixture for 6 hours, ball: material: water at 2:1:1, sieve through 250 mesh and make the sieve residue less than 0.5 %, add deionized water to prepare the slurry and keep the water content at 41%.

[0022] Brush the glaze evenly with Al by screen printing 2 o 3 On the ceramic sheet, dry it at 120°C, and then vertically immerse the ceramic sheet in the modified SiO 2 In the microsphere suspension...

Embodiment 3

[0024] Take 50mL of absolute ethanol and divide it into two equal parts, one part is added with ethyl orthosilicate to make 11Vol% ethyl orthosilicate ethanol solution, which is recorded as solution A; Add a total of 6ml of ammonia water and NaCl standard solution for 7:4 and record it as solution B; slowly add solution B to solution A, stir and react for 20h to 22h to obtain a stable suspension and centrifuge the obtained suspension to obtain the modified SiO 2 suspension.

[0025] Ball mill 0.5% sodium tripolyphosphate, 1.5% carboxymethyl cellulose, and 98.0% boric acid glass frit mixture for 7 hours, ball: material: water at 2:1:1, sieve through 300 mesh and make the sieve residue less than 0.5 %, add deionized water to prepare the slurry and keep the water content at 42%.

[0026] Brush the glaze evenly with Al by screen printing 2 o 3 On the ceramic sheet, dry it at 100°C, and then vertically immerse the ceramic sheet in the modified SiO 2 In the suspension of micros...

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Abstract

The invention discloses a SiO2 photonic crystal structure color coating and a preparation process thereof. The preparation method comprises the following steps: by taking ethyl orthosilicate as a silicon source, absolute ethyl alcohol as a solvent and sodium chloride as a modifier, reacting at normal temperature to obtain a modified SiO2 suspension, preparing a low-temperature glaze material, glazing on a ceramic substrate, and drying, self-assembling, depositing and thermally treating obtained silicon oxide sphere particles to obtain a SiO2 photonic crystal ceramic glaze. The method is simplein process, short in period, simple in equipment and relatively low in firing temperature, so that the cost is relatively low, and the obtained glaze has structural color and good adhesive force, andis beneficial to widening the application field of the structural color film.

Description

technical field [0001] The invention belongs to the technical field of photonic crystals, in particular to a SiO 2 Photonic crystal structural color coating and its preparation process. Background technique [0002] Photonic crystal refers to an artificial periodic structure with photonic bandgap characteristics, also known as PBG photonic crystal structure, which is a kind of material that selectively inhibits or modulates the propagation of light of a specific wavelength. Due to their periodic and ordered arrangement, photonic crystals can produce photonic band gaps and photonic localization, thereby inhibiting or regulating the propagation of light in them to produce structural colors. Traditional ceramic glazes often need to add different metal ions according to the color, which will lead to the introduction of toxic and harmful components and increase production costs. Structural color has the advantages of high color saturation, environmental protection, and rainbow ...

Claims

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Application Information

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IPC IPC(8): C04B41/89C03C8/16C01B33/141
CPCC04B41/89C04B41/52C03C8/16C01B33/141
Inventor 伍媛婷曾柏林韩琳刘长青刘虎林
Owner SHAANXI UNIV OF SCI & TECH
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