Anti-counterfeiting ceramic tile and preparation method thereof
A technology for ceramic tiles and anti-counterfeiting marks, applied in the field of building ceramic products, can solve the problems of structural damage of fluorescent materials, loss of fluorescent effect, difficulty in realizing anti-counterfeiting effect, etc., and achieve the effect of strong adaptability and adaptability
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[0027] The preparation of the fluorescent material can be carried out with reference to technical documents such as existing patents or periodicals. As an example, zinc oxide, gallium oxide, and chromium chloride hexahydrate according to Zn(Ga 0.99 Cr 0.01 ) 2 o 4 The metering ratio is weighed, wet ground and mixed evenly, dried and moved into an alumina crucible, and calcined in an electric furnace at 1350°C for 3 hours to obtain chromium-doped zinc gallate.
[0028] The fluorescent slurry also includes water and sodium tripolyphosphate in addition to the fluorescent material. Wherein, water accounts for 35-40 wt% of the fluorescent material, and sodium tripolyphosphate accounts for 0.3-0.5 wt% of the fluorescent material. Put the fluorescent material in a ball mill jar, add water and sodium tripolyphosphate, and wet grind to form a uniform slurry. The fluorescent paste may also include water-based printing paste to increase the viscosity and slipperiness of the fluoresc...
Embodiment 1
[0050] The preparation method of the anti-counterfeiting ceramic tile based on chromium-doped zinc gallate comprises the following steps:
[0051] Step 1: using green body powder to prepare green body;
[0052] Step 2: Dry the green body; the drying temperature is 160°C, and the drying time is 50 minutes;
[0053] Step 3: Put the chromium-doped zinc gallate fluorescent material in a ball mill tank, add 35wt% water and 0.3wt% sodium tripolyphosphate, and mill for 10 minutes to form a uniform slurry; add water-based printing paste to the uniform slurry, and stir evenly Adjusted to a specific gravity of 1.6g / cm 3 Fluorescent slurry; the anti-counterfeiting mark is made into a 100-mesh screen, and the fluorescent slurry is applied to the surface of the dry ceramic body by screen printing to form a ceramic body printed with the anti-counterfeiting mark;
[0054] Step 4: Spray the bottom glaze on the ceramic body printed with the anti-counterfeiting mark; the chemical composition ...
Embodiment 2
[0061] It is basically the same as Embodiment 1, the only difference is that the color tone of the inkjet pattern texture is replaced by white.
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