An ultrafine, highly absorbent, anti-slip functional ceramic tile and its preparation process

Abstract

This invention discloses an ultra-fine, highly absorbent, anti-slip functional ceramic tile and its preparation process, belonging to the field of building ceramics. This invention constructs a combination of a light-guiding cavity and a high-transparency window in an opaque ceramic matrix, and then superimposes an ultra-fine, highly absorbent layer, a surface microporous anti-slip layer, and a light-gathering and luminescent layer. The prepared multifunctional ceramic tile has the following functions: (1) Safety and anti-slip: The ultra-fine, highly absorbent layer under the glaze has a high water absorption rate of 30S, which can quickly absorb the surface water film; the surface microporous structure layer on the glaze has a contact angle ≤8°, spreads into a water film in 0.5s, has a high wet static friction coefficient, and has high anti-slip performance; (2) Decoration and luminescence: The light-guiding cavity wall is glazed twice to form a total reflection glass tube, and a high-transparency window is used to form a high contrast with the substrate. The light-gathering and luminescent liquid work together to emit light; it can be used as a decorative ceramic tile for water stages, swimming pools, water landscape boardwalks and other scenes.

Description

Technical Field

[0001] This invention discloses a building ceramic, and more particularly relates to an ultrafine, highly absorbent, anti-slip functional ceramic tile and its preparation process. Background Technology

[0002] Traditional ceramic tiles have a water absorption rate of <0.5%, resulting in poor wet slip resistance. Existing water-absorbing anti-slip tiles only have a water-absorbing agent sprinkled on the surface, which is easily worn, has low water absorption capacity, and has limited functionality. Some tiles have a surface layer of highly absorbent resin ceramic plate, but the resin ages and peels off. Others use micron-sized SiC particles to improve dry slip resistance, but the wet effect is limited. Especially when used in scenarios such as fountains and stages, better wet slip resistance is required to ensure effectiveness. Therefore, there is a need for an improved anti-slip functional ceramic tile. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems by providing an ultra-fine, highly absorbent, anti-slip functional ceramic tile and its preparation process.

[0004] To achieve the above objectives, the present invention provides the following technical solution, comprising the following steps:

[0005] S1, Pore-forming agent mixing: Mix 8 parts by weight of pore-forming agent and tile matrix powder in a mixer for 120 seconds. The pore-forming agent is PVA-starch composite microspheres with d50=1.0mm. Spray 3 parts of deionized water into the dry mix formed by the pore-forming agent and tile matrix powder to form a powder with uniformly coated pore-forming particles. The tile matrix powder includes: 28 parts of SiO2, 22 parts of potassium feldspar, 15 parts of sodium feldspar, 25 parts of kaolin, 3 parts of talc, 2 parts of dolomite and 3 parts of low-temperature frit.

[0006] S2, Oriented Fabrication and Pressing: Using a CNC fabrication system, powder is oriented and laid in the middle of the mold. The upper and lower surfaces are covered with ceramic tile matrix powder without pore-forming agent, forming a three-layer structure. It is pressed by a hydraulic press, and after pressing and firing, it forms a brick material with a through-type light guide cavity.

[0007] S3, the brick material is heated in an oxidizing atmosphere in a roller kiln during the first firing. The brick body is obtained after the pore-forming agent is fully burned off and discharged with the flue gas.

[0008] S4, laser-cut through hole: a 1064nm fiber laser is used to ablate a through hole with a vertical light guide cavity on the opaque substrate surface of the brick material according to a preset pattern. After laser treatment, ultrasonic cleaning is used to remove slag.

[0009] S5, ultra-fine superabsorbent layer vacuum impregnation, is prepared with the following slurry in the indicated mass ratios:

[0010] 30 parts of layered metakaolin, 20 parts of silica fume, 12 parts of α-Al2O3 nanopowder, 8 parts of highly absorbent SAP resin microspheres, 1.5 parts of sodium carboxymethyl cellulose, 5 parts of water glass with a modulus of 3.3, and 45 parts of deionized water are impregnated and pre-dried with the slurry to form an ultra-fine highly absorbent layer.

[0011] S6, Secondary glazing of the cavity wall: Low-melting-point glass slurry is sprayed onto the inner wall of the light guide cavity, and after a second rapid firing, a dense glass layer is formed on the cavity wall.

[0012] S7, high-transparency window construction: the brick is placed in a vacuum tank and vacuum-filled with SiO2 sol with a solid content of 30% to fill the laser through holes and surface micro-cracks. The excess sol on the outside of the brick is removed by centrifugation, while the sol inside the hole is retained. A dense nano-SiO2 glass plug is formed by UV curing. After UV curing is completed, the surface of the brick is polished.

[0013] S8, luminescent liquid vacuum-pressure injection: The brick is placed in a vacuum chamber and evacuated until the residual gas in the light guide cavity is removed; luminescent liquid is injected so that the liquid completely fills the light guide cavity, and after depressurization, it is removed, the surface residual liquid is wiped off, the laser hole is sealed with a silicone plug, 3μm nano SiO2 sol is sprayed, and it is cured in an oven at 80℃ for 30min. The luminescent liquid includes the following components by mass: 10 parts rare earth strontium aluminate powder, 45 parts propylene glycol and 45 parts deionized water.

[0014] Preferably, in step S5, after the ultrafine highly absorbent layer is formed on the brick, a light-emitting layer is applied above the light guide cavity to form a light-gathering layer. The steps are as follows:

[0015] According to the mass fraction, 45 parts of strontium aluminate SrAl2O4:Eu 2+ ,Dy 3+ 40 parts of low-melting-point glass powder, 8 parts of nano-SiO2, 7 parts of Bi2O3-B2O3-ZnO frit, and 3 parts of ethyl cellulose were dissolved in 30 parts of terpineol solvent to prepare ink. After being milled by three rollers, the ink was transferred to a screen printing machine and screen printed twice at 90°C using a 120-mesh polyester screen with a wet film thickness of 30μm / pass. After printing, the ink was surface dried under an infrared lamp at 90°C for 3 minutes.

[0016] Preferably, in step S5, after the phosphorescent luminescent layer is surface-dried, a water-absorbing and anti-slip microporous structure layer is impregnated onto the brick surface to form a layer, the steps of which are as follows:

[0017] A sol system was prepared by dissolving 25 parts by weight of nano-SiO2, 12 parts by weight of nano-Al2O3, 18 parts by weight of kaolin, 4 parts by weight of PVA-124, and 0.8 parts by weight of MWCNTs-COOH in 40 parts by weight of deionized water. The brick was then completely immersed in the sol system for 3 minutes before being pulled up at a speed of 3 mm / s. After pulling, the brick was pre-dried in an 80℃ oven for 10 minutes and then transferred to a 15mW / cm² oven. 2 Cured under a 365nm UV lamp for 5 minutes.

[0018] An ultra-fine, highly absorbent, anti-slip functional ceramic tile, prepared using the aforementioned process, includes an opaque ceramic substrate, an internally connected light guide cavity, a high-transmittance window covering the light guide cavity, and a luminescent liquid filling the light guide cavity. When the luminescent liquid is excited, the light emitted is totally reflected by the cavity wall of the light guide cavity and emitted through the high-transmittance window to form a luminescent pattern.

[0019] Preferably, the light guide cavity is a secondary glaze-fired glass phase.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention constructs a combination of a light-guiding cavity and a high-transparency window within an opaque ceramic matrix, and then superimposes an ultra-fine, highly absorbent layer, a surface microporous anti-slip layer, and a light-emitting layer. The resulting multifunctional ceramic tile possesses the following functions:

[0022] (1) Safe and slip-resistant: the ultra-fine super absorbent layer under the glaze has a high water absorption rate of 30S and can quickly absorb the surface water film; the surface microporous structure layer on the glaze has a contact angle of ≤8° and spreads into a water film in 0.5s, with a high wet static friction coefficient and high slip resistance.

[0023] (2) Decorative luminescence: The light guide cavity wall is glazed twice to form a total reflection glass tube, and a high-transmittance window is used to form a high contrast with the substrate. The light-gathering and luminescent liquid work together to produce light.

[0024] Decorative floor tiles suitable for use in water stages, swimming pools, waterfront walkways, and other similar settings. Attached Figure Description

[0025] Figure 1 To design multiple sets of control brick physical property charts with highly absorbent SAP resin microspheres as the variable under the baseline formulation. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] A manufacturing process for an ultrafine, highly absorbent, anti-slip functional ceramic tile includes the following steps:

[0028] S1, Pore-forming agent mixing: Mix 8 parts by mass of pore-forming agent with tile matrix powder in a mixer for 120 seconds. The pore-forming agent is PVA-starch composite microspheres with d50=1.0mm. Spray 3 parts of deionized water into the dry mix formed by the pore-forming agent and tile matrix powder to form a powder with uniformly coated pore-forming particles. The PVA-starch composite microspheres are prepared by reverse emulsion-crosslinking method, specifically including the following steps: Raw material ratio: 5 parts soluble starch, 0.05 parts PVA-1799, 15 parts deionized water, 45 parts liquid paraffin, 1.5 parts Span-80, 0.5 parts epichlorohydrin;

[0029] Soluble starch was heated to 65°C in deionized water and stirred continuously for 30 min, then cooled to 50°C. PVA-1799 was added, and stirring continued until completely dissolved to form an aqueous phase. Span-80 was dissolved in liquid paraffin as the oil phase. The aqueous phase was added to the oil phase under mechanical stirring at 700 r / min, and emulsification was continued for 15 min to form a W / O emulsion. The pH was adjusted to 10 with 10% NaOH. Epichlorohydrin was slowly added dropwise to the emulsion at 55°C for 1.5 h to crosslink the microspheres and form a water-insoluble three-dimensional network and hardened microspheres. After the crosslinking reaction, the microspheres were transferred to a centrifuge and centrifuged at 2500 rpm for 5 min to separate them. The microspheres were washed twice each with petroleum ether, ethanol, and deionized water to remove the oil phase and free crosslinking agent. The residue was then dried in an oven with hot air for 4 h to obtain white solid PVA-starch composite microspheres.

[0030] The ceramic tile matrix powder includes: 28 parts SiO2, 22 parts potassium feldspar, 15 parts sodium feldspar, 25 parts kaolin, 3 parts talc, 2 parts dolomite and 3 parts low-temperature frit.

[0031] S2, Oriented Fabrication and Pressing: A CNC fabrication system is used to orient the powder in the middle of the mold. The upper and lower surfaces are covered with ceramic tile matrix powder without pore-forming agent, forming a three-layer structure. A 4000t hydraulic press is used to press the powder at a pressure of 38±2MPa and a descent speed of 1.5mm / s, and the pressure is held for 2s. This causes the pore-forming agent particles to be oriented horizontally inside the green body. After firing, a through-type light guide cavity is formed.

[0032] S3, a single-firing roller kiln oxidizing atmosphere, heating the brick material with a heating rate of 25℃ / min in the initial stage, and extending the 600-900℃ range for 3 minutes to ensure that the pore-forming agent is fully burned off and discharged with the flue gas. The maximum temperature is 1210℃, and the cycle is 55 minutes. After firing, the light guide cavity penetration rate is ≥95%, the glass phase content of the cavity wall is ≥65%, and the surface roughness Ra≤0.8µm. The brick body is obtained after the pore-forming agent is fully burned off and discharged with the flue gas.

[0033] S4, laser-cut through-hole, using a 1064nm fiber laser, 50W power, 20kHz frequency, 80µm focused spot diameter, and 800mm / s scanning speed, to ablate a vertical light guide cavity through-hole on the surface of an opaque substrate according to a preset pattern, with a hole diameter of 2mm and a taper ≤3°; after laser treatment, ultrasonic cleaning for 5min is performed to remove slag.

[0034] S5, ultra-fine superabsorbent layer vacuum impregnation, is prepared with the following slurry in the indicated mass ratios:

[0035] The standard formulation consists of 30 parts layered metakaolin, 20 parts silica fume (d50=200nm), 12 parts α-Al2O3 nanopowder (prepared by self-propagating synthesis and grinding), 1.5 parts sodium carboxymethyl cellulose, 5 parts water glass with a modulus of 3.3, 45 parts deionized water, and highly absorbent SAP resin microspheres.

[0036] After the bricks are held under pressure at -0.09MPa for 10 minutes in a vacuum machine, the grout is injected and then pressurized to 0.3MPa for 20 minutes. The bricks are then pre-dried in an oven at 80℃ for 2 hours to form an ultra-fine, highly absorbent layer.

[0037] Under the baseline formulation, multiple control groups were designed to analyze the physical properties of bricks using highly absorbent SAP resin microspheres (d50=5μm) as the variable. The tests included 30s water absorption rate (GB / T3810.3), wet static friction coefficient μ (EN16165, rubber base, 20℃), wet-dry cycle resistance: water absorption → drying at 110℃ for 2 hours → rapid cooling with cold water, 1 cycle = 1 cycle, 50 cycles in total, water retention rate, surface micromorphology: pore size and porosity measured by FE-SEM (ImageJ), and layer-glaze interface shear strength (GB / T12954, push-shear method). The results are as follows: Figure 1As shown, the main effect of the superabsorbent SAP resin microspheres significantly satisfies p<0.01. The 30s water absorption rate, 50-cycle water absorption retention rate, and wet static friction coefficient μ all increase with increasing content. After the content is >8%, the marginal effect weakens. The optimal solution is to use 5 parts of superabsorbent SAP resin microspheres.

[0038] In step S5, after an ultra-fine, highly absorbent layer is formed on the brick, a light-emitting layer is applied above the light-guiding cavity to form a photoluminescent layer. The steps are as follows:

[0039] According to the mass fraction, 45 parts of strontium aluminate SrAl2O4:Eu 2+ ,Dy 3+ 40 parts low-melting-point glass powder, 8 parts nano-SiO2, 7 parts Bi2O3-B2O3-ZnO frit, and 3 parts ethyl cellulose were dissolved in 30 parts terpineol solvent to prepare ink. After three-roll milling, the ink was transferred to a screen printing machine and screen printed twice at 90°C using a 120-mesh polyester screen with a wet film thickness of 30μm / pass. After printing, the ink was surface dried under an infrared lamp at 90°C for 3 minutes.

[0040] S6, secondary glazing of the cavity wall, spraying low-melting-point glass slurry onto the inner wall of the light guide cavity. The specifications of the low-melting-point glass slurry are: softening point 580℃, refractive index 1.52, particle size d90≤5µm, and application rate 0.8g / cm³. 3 The secondary rapid firing process uses 1080℃ for 45 minutes, with the cooling rate controlled at -25℃ / min at the end of the heating phase (500℃) to prevent glass phase cracking. After firing, a dense glass layer is formed on the cavity wall. At a cavity wall thickness of 100µm and a wavelength of 550nm, the critical total reflection angle is ≤42° and the linear transmittance is ≥88%.

[0041] S7, high-transparency window construction: the brick is placed in a vacuum tank and vacuum-filled with SiO2 sol with a solid content of 30% to fill the laser through holes and surface micro-cracks. The excess sol on the outside of the brick is removed by centrifugation, while the sol inside the hole is retained. A dense nano-SiO2 glass plug is formed by UV curing. After UV curing is completed, the surface of the brick is polished.

[0042] S8, luminescent liquid vacuum-pressure injection: The brick is placed in a vacuum chamber and evacuated until residual gas in the light guide cavity is removed; luminescent liquid is injected to completely fill the light guide cavity, and after depressurization, it is removed, surface residual liquid is wiped off, the laser hole is sealed with a silicone plug, 3μm nano SiO2 sol is sprayed, and it is cured in an oven at 80℃ for 30 minutes. The luminescent liquid includes the following components by mass: 10 parts rare earth strontium aluminate powder, 45 parts propylene glycol and 45 parts deionized water.

[0043] In step S5, after the phosphorescent luminescent layer is surface-dried, a water-absorbing and anti-slip microporous structure layer is formed by impregnation on the brick surface. The steps are as follows:

[0044] A sol system was prepared by dissolving 25 parts by weight of nano-SiO2, 12 parts by weight of nano-Al2O3, 18 parts by weight of kaolin, 4 parts by weight of PVA-124, and 0.8 parts by weight of MWCNTs-COOH in 40 parts by weight of deionized water. The brick was then completely immersed in the sol system for 3 minutes before being pulled up at a speed of 3 mm / s. After pulling, the brick was pre-dried in an 80℃ oven for 10 minutes and then transferred to a 15mW / cm² oven. 2 Cured under a 365nm UV lamp for 5 minutes;

[0045] An ultra-fine, highly absorbent, anti-slip functional ceramic tile, prepared using the above-mentioned process, includes an opaque ceramic matrix, an internally connected light guide cavity, a high-transmittance window covering the light guide cavity, and a luminescent liquid filling the light guide cavity. When the luminescent liquid is excited, the light emitted is totally reflected by the cavity wall of the light guide cavity and emitted through the high-transmittance window to form a luminescent pattern. The light guide cavity is a secondary glaze-fired glass phase.

[0046] The prepared ceramic tiles were made into finished samples with dimensions of 300mm×300mm×10mm, with high-transmittance windows of Ø1mm arranged in a square array of 20mm×20mm. An open area ratio of 5.0±1 was used. The luminous efficacy of the high-transmittance windows and light guide cavity was tested according to JG / T467-2015 and CIE69-1987. The testing equipment included is shown in Table 1 below.

[0047] Table 1 Test Equipment

[0048] equipment Model / Specifications Luminometer KonicaMinolta LS-150 (0.01-999kcd / m², 1° field of view) Spectrometer OceanOpticsFX-VIS-NIR(350-850nm) Integral ball 150mm, 550nm calibrated transmittance Excitation source 365nm LED panel, adjustable 1mW / cm² Perspective Platform Rotate from 0 to 85°, step in 5° increments darkroom The dimensions are 6m x 4m x 3m, and the background illuminance is ≤0.01 lx. Hydraulic pressure table 0-0.5MPa, accuracy ±0.01MPa

[0049] The high-transmittance window transmittance T was measured at 550 nm by placing the finished sample at the inlet of the integrating sphere, with the beam perpendicular to the window, and the transmittance T = 91 ± 1%.

[0050] Surface brightness L and uniformity were measured using a 9-point grid with a field of view of 1° and a spacing of 100 mm, after 5 min of excitation by an excitation source and 0 min and 10 min after the excitation source was turned off. The result was L(0 min) = 52 ± 2 cd / m. 2 L(10min) = 180 ± 10 mcd / m 2 Uniformity U=0.85;

[0051] The viewing platform rotates 0-85° in 5° increments, maintaining a 1m viewing distance. The measured brightness attenuation is ≤15% within ±60° and 30% within ±75°.

[0052] The luminous contrast ratio C was determined by comparing the brightness of the high-transparency window and the opaque ceramic substrate simultaneously. The measured luminous contrast ratio C = 25:1, and the pattern of the high-transparency window could be clearly identified within a 30m viewing distance in a dark room.

[0053] The pore-forming agent is completely vaporized during the first firing of the green body, leaving continuous cavities. This forms a cavity wall with a volume ratio of 5-15% that is encapsulated by a glass phase, serving as a light-guiding channel. The opaque ceramic matrix of the brick itself has low light transmittance. Laser-drilled holes on the surface serve as high-transmittance windows, precisely aligning with the light-guiding cavity below to form a light path channel. This creates a high-contrast pattern effect with dark background and bright spots on the opaque ceramic matrix. The laser hole walls are filled with nano-SiO2 sol as a sealing plug to provide positioning ports. By first constructing high-transmittance windows and then performing vacuum-pressure injection of luminescent liquid, compared to using luminescent liquid to enter the cavity first and then undergoing high-temperature vaporization during laser ablation, which can cause a sudden increase in internal pressure and lead to cavity wall cracking, this method is safer. Furthermore, the nano-SiO2 plug is not completely dense glass, but rather a nanoscale interconnected microporous network, allowing the aqueous liquid to permeate under a vacuum-pressure gradient, while the molten glass phase does not flow back.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A process for preparing super-fine high water-absorbing anti-slip functional ceramic tiles, characterized in that, Comprising the following steps: S1, pore-forming agent mixing, 8 parts of pore-forming agent and ceramic tile matrix powder are dry mixed in a mixer for 120 seconds, the pore-forming agent is PVA-starch composite microspheres with d50=1.0mm, 3 parts of deionized water are sprayed into the dry mixture of pore-forming agent and ceramic tile matrix powder to form a powder with uniformly coated pore-forming particles, the ceramic tile matrix powder includes: 28 parts of SiO2, 22 parts of potassium feldspar, 15 parts of sodium feldspar, 25 parts of kaolin, 3 parts of talc, 2 parts of dolomite and 3 parts of low-temperature clinker; S2, directional distribution and pressing, the powder is laid in the middle of the mold by using a numerical control distribution system, the upper and lower surfaces are covered with ceramic tile matrix powder without pore-forming agent to form a three-layer structure, and the structure is pressed by a hydraulic press to form a brick material with a through-type light guide cavity after firing; S3, first firing in an oxidizing atmosphere of a roller kiln, the brick material is heated by increasing the temperature, and the brick body is obtained after the pore-forming agent is completely burned out and discharged with the flue gas; S4, laser opening hole, a 1064nm fiber laser is used to ablate a through hole perpendicular to the light guide cavity on the opaque matrix surface of the brick body according to a pre-set pattern, and the slag is removed by ultrasonic cleaning after laser; S5, vacuum impregnation of superfine high water absorption layer, the following slurry with the following mass fraction ratio is prepared: Layered metakaolin 30 parts, silica fume 20 parts, α-Al2O3 nano powder 12 parts, high water absorption resin microspheres 8 parts, sodium carboxymethyl cellulose 1.5 parts, water glass with modulus of 3.3 5 parts, and deionized water 45 parts, the brick body is impregnated and pre-dried by the slurry to form a superfine high water absorption layer; S6, secondary glazing of the cavity wall, low-melting-point glass slurry is sprayed to the inner wall of the light guide cavity, and a dense glass layer is formed on the cavity wall after secondary fast firing; S7, high-transparency window construction, the brick body is placed in a vacuum tank, and SiO2 sol with a solid content of 30% is filled and injected to fill the laser through hole and surface microcracks, the excess sol outside the brick body is removed by centrifugal force, the sol in the hole is retained, a dense nano-SiO2 glass state plug is formed by ultraviolet curing, and the surface of the brick body is polished after ultraviolet curing is completed; S8, vacuum-pressure injection of light-emitting liquid, the brick body is placed in a vacuum chamber, vacuum is applied to remove residual gas in the light guide cavity, light-emitting liquid is injected to completely fill the light guide cavity, and the brick body is taken out after pressure relief, the surface residual liquid is wiped off, the laser hole is sealed with a silica gel plug, 3μm nano-SiO2 sol is sprayed, and the sol is cured in an oven at 80℃ for 30 minutes, the light-emitting liquid includes the following components by mass fraction: 10 parts of rare earth strontium aluminate powder, 45 parts of propylene glycol and 45 parts of deionized water.

2. The preparation process of the superfine high water absorption and anti-slip functional ceramic tile according to claim 1, characterized in that, In step S5, after the superfine high water absorption layer is formed on the brick body, a light storage and emission layer is applied on top of the light guide cavity, and the steps are as follows: 45 parts of strontium aluminate SrAl2O4:Eu 2+ , Dy 3+ , 40 parts of low-melting glass powder, 8 parts of nano-SiO2, 7 parts of Bi2O3-B2O3-ZnO frit, 3 parts of ethyl cellulose are dissolved in 30 parts of terpineol solvent to prepare an ink, which is transferred to a screen printing machine after three-roll grinding, and screen printing is carried out twice with a 120-mesh polyester screen at 90°C, the wet film thickness is 30 μm per pass, and the surface drying is carried out under an infrared lamp at 90°C for 3 min after printing.

3. The preparation process of the superfine high water absorbent anti-slip functional ceramic tile according to claim 2, characterized in that, In step S5, after the light storage and emission layer is surface dried, a water absorption and anti-slip microporous structure layer is formed on the surface of the brick body by immersion, and the steps are as follows: Dissolve 25 parts of nano-SiO2, 12 parts of nano-Al2O3, 18 parts of kaolin, 4 parts of PVA-124 and 0.8 parts of MWCNTs-COOH into 40 parts of deionized water by mass fraction to stir to make a sol system, immerse the brick body in the sol system completely, then perform pulling after 3 min, the pulling speed is 3 mm / s, after pulling, pre-baking is performed in an 80°C oven for 10 min, then transfer to a 365 nm ultraviolet lamp with a specification of 15 mW / cm 2 for curing for 5 min.

4. A super-fine high water absorbent anti-slip functional ceramic tile, characterized by, The preparation process according to any one of claims 1-3 is adopted, including an opaque ceramic matrix, internal light guide cavities that are connected to each other, a high-transparency window covering the light guide cavities, and a light-emitting liquid filled in the light guide cavities, the light emitted by the light-emitting liquid after excitation is totally reflected by the cavity wall of the light guide cavities and emitted through the high-transparency window to form a light-emitting pattern.

5. The ultra-fine super absorbent anti-slip functional ceramic tile according to claim 4, characterized by, The light guide cavity is a twice fritted glass phase.

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