Preparation process of luminous ceramic tile and luminous ceramic tile thereof

Abstract

The invention discloses a preparation process of a luminescent ceramic tile and the luminescent ceramic tile. The preparation process comprises the following specific steps: S1) preparing luminescent powder; S2) preparing sodium silicate sol; S3) adding the luminescent powder into the sol while stirring, further performing stirring uniformly, and performing drying to obtain luminescent powder sol particles; S4) preparing a glaze material: uniformly mixing the glaze and the luminescent powder sol particles in proportion, and then applying the mixture on the surface of a ceramic tile green body to obtain a luminescent green body layer; S5) applying glaze powder on the surface of the luminous green body layer, and putting the luminous green body layer into a press for compression molding to obtain a green body; S6) putting the polished green body into a kiln for firing, preserving heat, and then cooling along with the furnace to obtain the luminous ceramic tile. And the particle size D50 of the luminescent powder sol particles is 5-8.5 microns. The invention further provides the luminous ceramic tile prepared by the preparation process of the luminous ceramic tile, and the prepared luminous ceramic tile is good in luminous intensity and long in afterglow time.

Description

technical field [0001] The invention belongs to the technical field of ceramic brick production, and in particular relates to a preparation process of luminous ceramic bricks and the luminous ceramic bricks. Background technique [0002] There are many studies on luminescent materials in the prior art, including rare earth luminescent materials based on silicate, borate, phosphate, tungstate or vanadate. In order to improve the afterglow performance of luminescent materials, the method of reducing the firing temperature Technology, such as low-temperature luminous ceramic tiles fired at about 800°C, or medium-temperature glazed luminous ceramic tiles fired at 1020°C-1040°C, due to the low firing temperature, the luminous ions Eu 3+ Insufficient conversion to Eu 2+ , resulting in blue-green luminous colors, single luminous color, low luminous intensity, and short afterglow time. [0003] Aluminate luminescent powder has a higher luminous intensity than metal sulfide lumines...

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Problems solved by technology

[0002] There are many studies on luminescent materials in the prior art, including rare earth luminescent materials based on silicate, borate, phosphate, tungstate or vanadate. In order to improve the afterglow performance of luminescent materials, the method of reducing the firing temperature Technology, such as low-temperature luminous ceramic tiles fired at about 800°C, or medium-temperature glazed luminous ceramic tiles fired at 1020°C-1040°C, due to the low firing temperature, the luminous ions Eu 3+ Insufficient conversion to Eu 2+ , resulting in blue-green luminous colors, single luminous color, low luminous intensity and short afterglow time

[0003] Aluminate luminescent powder has a higher luminous intensity than metal sulfide luminescent powder, and has a long afterglow time, but it has poor compatibility with ordinary ceramic glazes, and is prone to hydrolysis, thereby destroying the crystal structure and affecting luminous efficiency. There are many bubbles on the surface and the appearance is poor

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