Anti-slip porcelain tile with surface texture effect and preparation method thereof

Abstract

The present invention relates to the field of architectural ceramics, and more specifically to a non-slip porcelain tile with a surface textured effect and a method for preparing the same. The preparation method comprises the following steps: applying a top glaze to the surface of the tile; inkjet printing a design pattern on the surface of the tile after the top glaze is applied; applying a textured dry granular glaze to the surface of the tile after the design pattern is inkjet printed; the initial melting temperature of the textured dry granular glaze is 60 to 90°C higher than that of the top glaze; firing and polishing the tile into a kiln to obtain a non-slip porcelain tile with a surface textured effect. The present invention produces a grid-like raised texture on the surface after firing, forming a textured effect. After polishing, the mesh-like raised areas are shiny, while the areas without raised areas are dull. The two areas support each other, giving the tile surface a mesh-like shimmering effect, thereby improving the decorative properties of the product.

Description

Technical Field

[0001] The present invention relates to the field of building ceramics, and in particular to an anti-slip porcelain tile with a surface texture effect and a preparation method thereof. Background Art

[0002] With the development of the architectural ceramics market, the variety of building decoration materials has expanded, and consumers are placing higher demands on tile materials, pattern layers, colors, and decorative effects. Fully glazed tiles are widely favored by consumers for their rich colors and realistic patterns. However, polishing removes the surface crystals, significantly affecting the tiles' anti-slip properties. Furthermore, the decorative properties of fully glazed tiles can only be achieved through inkjet-printed patterns.

[0003] Chinese patent CN202310214385.0 discloses a patterned ceramic tile and its preparation method. The patterned ceramic tile comprises, from bottom to top, a base glaze layer, a translucent glaze layer, a pattern layer, and a granular glaze layer. The granular glaze used in the granular glaze layer is a mixture of a first granular glaze composition and a second granular glaze composition. The melting point of the first granular glaze composition is lower than that of the second granular glaze composition. The melting point of the translucent glaze layer is lower than that of the granular glaze layer. During firing, the translucent glaze melts first, cracking the outer granular glaze layer. When the melting temperature of the translucent glaze is reached, the translucent glaze flows out from the cracks in the cracked granular glaze layer, while the granular glaze collapses due to gravity. As a result, the translucent glaze forms natural raised patterns on the surface of the granular glaze layer. This solution involves three glazing processes: applying a base glaze, a translucent glaze, and a granular glaze. This process is complex, increases production costs, and is not conducive to product competitiveness. Summary of the Invention

[0004] In response to the above problems, the purpose of the present invention is to provide a method for preparing anti-slip porcelain tiles with a surface reticulated effect. After firing, a grid-like raised texture will be generated on the surface to form a reticulated effect. After polishing, the mesh-like raised parts are shiny and the non-raised parts are dull. The two support each other to give the tile surface a mesh-like glittering effect, thereby improving the decorative performance of the product.

[0005] In the first aspect, the present invention provides a method for preparing anti-slip porcelain tiles with a surface textured effect, comprising the following steps: applying a top glaze on the surface of the brick; inkjet printing a design pattern on the surface of the brick after applying the top glaze; applying a textured dry granular glaze on the surface of the brick after inkjet printing the design pattern; the initial melting temperature of the textured dry granular glaze is 60 to 90°C higher than that of the top glaze; firing and polishing in a kiln to obtain anti-slip porcelain tiles with a surface textured effect.

[0006] Preferably, the raw materials of the textured dry particle glaze include 64-70 wt% of textured dry particles and 30-36 wt% of corundum.

[0007] Preferably, the initial melting temperature of the reticulated dry granular glaze is 1115-1140°C; preferably, the chemical composition of the reticulated dry granular glaze includes: by mass percentage, loss on ignition: 0.4-0.6%; SiO2: 35.2-39.3%; Al2O3: 35.8-43.2%; K2O: 1.8-3.2%; Na2O: 2.2-3.1%; CaO: 5.2-6.8%; MgO: 1.5-2.2%; BaO: 0.5-0.9%; SrO: 2.4-3.5%; ZnO: 2.1-3.2%.

[0008] Preferably, the initial melting temperature of the textured dry particles is 1060-1110°C; preferably, the chemical composition of the textured dry particles includes, by mass percentage, loss on ignition: 0.5-0.8%; SiO2: 54.2-58.3%; Al2O3: 17.8-20.2%; K2O: 2.7-4.6%; Na2O: 3.4-4.8%; CaO: 7.8-9.8%; MgO: 2.2-3.3%; BaO: 0.8-1.4%; SrO: 3.8-5.4%; ZnO: 3.2-4.6%.

[0009] Preferably, the reticulated dry granular glaze is applied by pouring glaze; the specific gravity of the reticulated dry granular glaze is 1.32-1.36, and the glaze amount is 250-283g / m 2 .

[0010] Preferably, the initial melting temperature of the glaze is 1050~1100℃; preferably, the chemical composition of the glaze includes: by mass percentage, loss on ignition: 2.8~5.2%; SiO2: 49.4~53.3%; Al2O3: 15.8~20.5%; CaO: 3.6~5.2%; MgO: 2.2~3.6%; K2O: 2.2~3.7%; Na2O: 3.2~5.8%; BaO: 2.4~5.5%; ZnO: 3.2~4.8%; ZrO2: 8.2~9.8%.

[0011] Preferably, the glaze is applied by pouring glaze; the specific gravity of the glaze is 1.82-1.86, and the glaze amount is 600-700g / m 2 .

[0012] Preferably, the maximum firing temperature is 1160-1170° C., and the firing time is 45-50 minutes.

[0013] Preferably, the glaze slurry of the reticulated dry particle glaze includes, in addition to the reticulated dry particles and corundum, auxiliary materials accounting for 200-240 wt% of the reticulated dry particles; preferably, the auxiliary materials include: in parts by weight, 20-40 parts of sodium carboxymethyl cellulose, 15-25 parts of glycerol, 20-30 parts of ethylene glycol, 1-5 parts of preservatives, and 20-40 parts of water.

[0014] In a second aspect, the present invention provides a non-slip ceramic tile with a surface textured effect, which is obtained according to any of the above methods for preparing the non-slip ceramic tile with a surface textured effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a rendering of the porcelain tile surface before polishing of Example 1.

[0016] Figure 2 This is a rendering of the porcelain tile surface before polishing of Example 2.

[0017] Figure 3 This is the effect of the porcelain tile surface after fine polishing using another inkjet design pattern layout in Example 2.

[0018] Figure 4 This is a brick surface rendering of Example 4. DETAILED DESCRIPTION

[0019] The present invention is further illustrated by the following embodiments. It should be understood that the following embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Unless otherwise specified, percentages are by weight. The following is an exemplary method for preparing a porcelain tile having a textured surface according to the present invention.

[0020] The green body powder is pressed and formed into a green brick. Green body powder commonly used in the art can be used. For example, the chemical composition of the green body powder includes, by mass percentage, loss on ignition: 3.7-4.5%; SiO2: 68.0-72.0%; Al2O3: 17.0-19.0%; Fe2O3: 0.6-0.9%; TiO2: 0.1-0.3%; CaO: 0.4-0.7%; MgO: 0.3-0.8%; K2O: 2.5-3.2%; and Na2O: 2.8-3.8%.

[0021] The green body can be prepared using ceramic raw materials commonly used in the field. The green body raw materials are ball-milled, powder-sprayed and granulated, and pressed to obtain brick green bodies. The powder can be applied in the die cavity of the press for pressing. The moisture content of the green body powder is preferably controlled at 6.45-7.25wt%. As an example, the particle size of the green body powder includes: in terms of mass percentage, the 20 mesh sieve residue is <2%, the 40 mesh sieve residue is 30-40%, the 60 mesh sieve residue is 75-85%, and the 100 mesh sieve residue is >92%, and the sieve residues of each mesh size are cumulative values.

[0022] The bricks can be dried in a coal drying kiln. The moisture content of the bricks after drying should be controlled within 0.24-0.32 wt%.

[0023] A glaze is applied to the surface of the brick to form a glaze layer. The surface of the brick after coal drying can be cleaned before glazing. The glaze has an initial melting temperature of 1050-1100°C. In some technical solutions, the chemical composition of the glaze may include, by mass percentage, loss on ignition: 2.8-5.2%; SiO2: 49.4-53.3%; Al2O3: 15.8-20.5%; CaO: 3.6-5.2%; MgO: 2.2-3.6%; K2O: 2.2-3.7%; Na2O: 3.2-5.8%; BaO: 2.4-5.5%; ZnO: 3.2-4.8%; and ZrO2: 8.2-9.8%.

[0024] The high CaO and MgO content of this top glaze lowers its initial melting temperature, allowing it to melt first during firing to produce a liquid phase. Furthermore, the CaO, MgO, and ZrO2 crystallize after firing, enhancing the glaze's whiteness and concealing the base color of the body. The introduction of ZnO and BaO enhances the glaze's color development and provides a carrier for inkjet inks. Furthermore, the glaze produces a higher liquid phase during firing than conventional polishing glazes, which also improves the product's stain resistance.

[0025] The glaze is applied by pouring. Water can be added to all the raw materials of the glaze to adjust the specific gravity to the required value. The specific gravity of the glaze is 1.82-1.86, and the glaze amount is 600-700g / m 2 Controlling the specific gravity and glaze amount of the glaze within this range is beneficial to the whiteness of the glaze and the shape of the product brick.

[0026] Inkjet patterns are printed on the glazed surface of the brick. Multi-channel inkjet printing allows for multi-color printing to create a pattern. Ink colors include blue, reddish brown, orange, golden yellow, lemon yellow, black, and red. The decorative pattern, texture, and color effects achieved through inkjet printing are determined by the design requirements.

[0027] The blank after inkjet printing of the design pattern is dried. This can be done by electrical drying. For example, the drying temperature is 230-280°C and the drying time is 80-180 seconds.

[0028] After the design pattern is inkjet printed, a textured dry granular glaze is applied to the surface of the brick blank. The raw materials of the textured dry granular glaze include 64-70wt% of textured dry particles and 30-36wt% of corundum. When the corundum content is too little, it is impossible to produce textured protrusions on the brick surface. For example, only (a small amount of) irregular protrusions will be formed. It may even cause the initial melting temperature of the textured dry granular glaze to be too low, thereby reducing the difference in the initial melting temperature between the surface glaze and the textured dry granular glaze, thereby causing the two to fuse together and resulting in no protrusions. When the corundum content is appropriate, the difference in the initial melting temperature between the textured dry granular glaze and the surface glaze is moderate, the surface glaze and the textured dry granular glaze do not fuse together at high temperatures, and textured protrusions are produced on the surface. When the corundum content is too much, the surface texture protrusions are too prominent and the brick surface feels rough, and the pollution resistance is poor. The textured dry granular glaze of the present invention has strong adaptability. The initial melting temperature of the textured dry granular glaze can be adjusted by adjusting the mass ratio of the textured dry granules to corundum, thereby controlling the initial melting temperature difference between the textured dry granular glaze and the surface glaze, so that a textured raised effect is produced on the product surface.

[0029] The textured dry granules have an onset temperature of 1060-1110°C. In some technical solutions, the chemical composition of the textured dry granules includes, by mass percentage, loss on ignition: 0.5-0.8%; SiO2: 54.2-58.3%; Al2O3: 17.8-20.2%; K2O: 2.7-4.6%; Na2O: 3.4-4.8%; CaO: 7.8-9.8%; MgO: 2.2-3.3%; BaO: 0.8-1.4%; SrO: 3.8-5.4%; and ZnO: 3.2-4.6%. The top glaze of the present invention and the textured dry granules have very similar onset temperatures, making it easy to adjust the onset temperature difference between the textured dry granule glaze and the top glaze by adjusting the mass ratio of corundum to the textured dry granules. In addition, the textured dry particles of the present invention contain relatively high levels of CaO, SrO, and ZnO, providing sufficient crystallizing agents without the need to introduce additional dry particles.

[0030] The incipient melting temperature of the reticulated dry granular glaze is 1115-1140° C. In some technical solutions, the chemical composition of the reticulated dry granular glaze includes, by mass percentage, loss on ignition: 0.4-0.6%; SiO2: 35.2-39.3%; Al2O3: 35.8-43.2%; K2O: 1.8-3.2%; Na2O: 2.2-3.1%; CaO: 5.2-6.8%; MgO: 1.5-2.2%; BaO: 0.5-0.9%; SrO: 2.4-3.5%; and ZnO: 2.1-3.2%.

[0031] The chemical composition of the above-mentioned reticulated dry granular glaze refers to the chemical composition of the mineral materials of the reticulated dry granular glaze, that is, the chemical composition of other raw materials (specifically reticulated dry granules and corundum) excluding auxiliary materials.

[0032] The initial melting temperature of the reticulated dry granular glaze is 60-90°C higher than that of the top glaze. The present invention utilizes this moderate initial melting temperature difference between the top glaze and the reticulated dry granular glaze to prevent them from co-melting during firing, thus facilitating the formation of reticulated protrusions on the tile surface. Specifically, during firing, the top glaze melts first to form a liquid phase, while the initial melting temperature difference between the top glaze and the reticulated dry granular glaze prevents them from co-melting at high temperatures. The reticulated dry granular glaze sinks due to gravity and, at the same time, is squeezed by the liquid phase of the top glaze, causing it to spread appropriately. Upon cooling, the reticulated dry granular glaze forms random, reticulated protrusions.

[0033] Prepare a glaze slurry for the textured dry granular glaze. In addition to the textured dry granules and corundum, the glaze slurry also includes auxiliary materials accounting for 200-240% by weight of the textured dry granules. For example, the auxiliary materials include, by weight, 20-40 parts sodium carboxymethyl cellulose, 15-25 parts glycerol, 20-30 parts ethylene glycol, 1-5 parts preservative, and 20-40 parts water. Weigh the textured dry granules and corundum, then add the auxiliary materials and mix thoroughly to obtain the textured dry granular glaze slurry.

[0034] The reticulated dry granular glaze is applied by pouring glaze. The specific gravity of the reticulated dry granular glaze is 1.32-1.36, and the glaze amount is 250-283g / m 2 The specific gravity of the net-grained glaze is in this range, which is conducive to the uniformity of glazing. If the specific gravity is too low, the glaze curtain is easy to float, resulting in bell-shaped defects; if the specific gravity is too high, bubbles are easy to appear, resulting in glaze pit defects. The glazing amount of the net-grained glaze is in this range, which is conducive to obtaining a suitable mesh-like raised texture on the product surface. For example, the specific gravity of the net-grained glaze is 1.32, and the glazing amount is 198g / m 2 When the amount of net-grained dry granular glaze applied is too little, the surface of the prepared porcelain tile sample has no net-grained protrusions. For example, the specific gravity of the net-grained dry granular glaze is 1.36, and the glaze amount is 320g / m 2 When the amount of reticulated dry granular glaze applied is too much, the reticulated protrusions on the surface of the prepared porcelain tile sample are too prominent, making the tile surface rough, the pollution resistance performance deteriorates, and the surface transparency also deteriorates.

[0035] Firing in the kiln. The firing temperature is 1160-1170°C for 45-50 minutes. When the firing temperature is too low, for example, a maximum firing temperature of 1140°C, the surface texture will appear three-dimensional, but the surface will be rough and have poor stain resistance. For example, when the firing temperature is too high, for example, a maximum firing temperature of 1180°C, the surface texture will melt, and after cooling, the surface texture will disappear. After firing, the glaze gloss of the net-textured dry granular glaze is 4-8 degrees.

[0036] Polishing. Preferably, fine polishing. As an example, the arrangement of fine polishing abrasive blocks is: 6 groups of 800 mesh modules and 16 groups of 1000 mesh modules.

[0037] Edging and packing.

[0038] The porcelain tiles of the present invention have a decorative reticulated effect. Scanning electron microscope (SEM) energy dispersive spectrometer analysis revealed that the chemical composition of the reticulated protrusions is essentially consistent with that of the reticulated granular glaze. In other words, the raised texture on the surface of the product of the present invention is primarily caused by the reticulated granular glaze. The chemical composition of the reticulated protrusions was analyzed. The chemical composition of the reticulated protrusions includes, by mass, SiO2: 34.4-39.3%; Al2O3: 37.6-45.2%; K2O: 1.5-2.7%; Na2O: 1.9-2.8%; CaO: 4.8-6.4%; MgO: 1.0-1.6%; BaO: 0.4-0.8%; SrO: 2.1-3.2%; and ZnO: 1.9-2.8%. The Al2O3 content of the reticulated protrusions may be slightly higher than that of the reticulated granular glaze. This is because corundum is difficult to melt and is more easily squeezed by the reticulated granules, forming protrusions on the surface. In addition, scanning electron microscopy revealed that the reticular protrusions contained a large amount of Al2O3 crystals, which further verified that the surface protrusions were (mainly) caused by the reticular dry granular glaze. This is further consistent with the high wear resistance of the product of the present invention, because Al2O3 crystals have excellent wear resistance. In Chinese patent CN202310214385.0, the melting point of the translucent glaze is lower than that of the dry granular glaze. When fired, the translucent glaze melts first, cracking the outer layer of the dry granular glaze. When the melting temperature of the translucent glaze is reached, the translucent glaze gushes out from the cracks in the cracked dry granular glaze layer, and the dry granular glaze collapses due to gravity, so the translucent glaze forms natural raised patterns on the surface of the dry granular glaze layer. Therefore, the reticular raised patterns of Chinese patent CN202310214385.0 are mainly produced by the translucent glaze.

[0039] The dry static friction coefficient of the textured non-slip ceramic tile of the present invention is 0.69-0.78 (e.g., 0.69), and the wet static friction coefficient is 0.63-0.70 (e.g., 0.63). In some technical solutions, the difference between the dry static friction coefficient and the wet static friction coefficient is only about 0.06.

[0040] The anti-slip ceramic tile with a surface textured effect has a pollution resistance of level 5.

[0041] The present invention uses a reticulated dry granular glaze with a high initial melting temperature and multiple functions. The reticulated dry granular glaze and the surface glaze are not melted together, and a reticulated raised texture is generated after firing, which greatly reduces production costs and simplifies production processes.

[0042] The following examples are further listed to illustrate the present invention in detail. It should also be understood that the following examples are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the above content of the present invention all fall within the scope of protection of the present invention. The specific process parameters and the like in the following examples are only examples within a suitable range, that is, those skilled in the art can make selections within a suitable range through the description herein, and are not limited to the specific numerical values ​​exemplified below.

[0043] Example 1

[0044] The method for preparing anti-slip porcelain tiles with a surface texture effect comprises the following steps:

[0045] Step 1: Press the green body powder into shape to obtain a brick.

[0046] Step 2. Apply a glaze to the surface of the brick after coal drying. The chemical composition of the glaze includes, by mass percentage, loss on ignition: 3.3%; SiO2: 51.2%; Al2O3: 16.5%; CaO: 4.2%; MgO: 2.6%; K2O: 3.3%; Na2O: 4.1%; BaO: 2.7%; ZnO: 3.6%; ZrO2: 8.5%. The glaze is applied by pouring, with a specific gravity of 1.84 and a glaze weight of 650g / m 2 The initial melting temperature of the glaze is 1060°C.

[0047] Step 3: Inkjet print a pattern on the surface of the glazed brick.

[0048] Step 4. Apply a textured dry granular glaze to the surface of the inkjet-printed brick. The textured dry granular glaze comprises 66% by weight of textured dry granules and 34% by weight of corundum. The chemical composition of the textured dry granules is as follows: loss on ignition (LOI): 0.6%; SiO₂: 54.4%; Al₂O₃: 18.2%; K₂O: 3.2%; Na₂O: 3.8%; CaO: 8.1%; MgO: 2.8%; BaO: 1.0%; SrO: 4.2%; and ZnO: 3.7%. The chemical composition of the reticulated dry granular glaze includes, by mass percentage, 0.5% loss on ignition; 37.8% SiO2; 41.6% Al2O3; 2.4% K2O; 2.9% Na2O; 6.1% CaO; 2.1% MgO; 0.7% BaO; 3.2% SrO; and 2.7% ZnO. The reticulated dry granular glaze has a melting point of 1120°C. The reticulated dry granular glaze is applied by pouring, has a specific gravity of 1.35, and is applied in an amount of 250g / m2. 2 .

[0049] Step 5. Place in kiln and fire at 1165°C for 45 minutes.

[0050] Step 6. Fine polishing, edge grinding, classification and packaging. The fine polishing grinding blocks include 6 groups of 800 mesh grinding blocks and 16 groups of 1000 mesh grinding blocks.

[0051] The porcelain tile sample prepared in Example 1 has a delicate feel. Figure 1 The sample exhibits a textured surface. According to the industry standard "National Ceramics and Plumbing Products Quality Supervision and Inspection Center," the sample's stain resistance is rated Level 5, with a dry static friction coefficient of 0.69, a wet static friction coefficient of 0.63, and a wear resistance rating of Level 4 (12,000 revolutions). After firing, the tile's water absorption is less than 0.5 wt%.

[0052] Example 2

[0053] The method for preparing anti-slip porcelain tiles with a surface texture effect comprises the following steps:

[0054] Step 1: Press the green body powder into shape to obtain a brick.

[0055] Step 2. Apply a glaze to the surface of the brick after coal drying. The chemical composition of the glaze includes, by mass percentage, 3.4%; SiO2: 51.2%; Al2O3: 15.8%; CaO: 4.2%; MgO: 2.6%; K2O: 3.3%; Na2O: 4.7%; BaO: 2.7%; ZnO: 3.6%; ZrO2: 8.5%. The glaze is applied by pouring, with a specific gravity of 1.84 and a glaze amount of 700g / m 2 The initial melting temperature of the glaze is 1050°C.

[0056] Step 3: Inkjet print the pattern on the glazed brick.

[0057] Step 4. Apply a textured dry granular glaze to the surface of the brick after the top glaze has been applied. The raw materials for the textured dry granular glaze include 64 wt% of textured dry granules and 36 wt% of corundum. The chemical composition of the textured dry granules is the same as that of Example 1. The chemical composition of the textured dry granular glaze includes, by mass percentage, loss on ignition: 0.4%; SiO2: 37.6%; Al2O3: 42.4%; K2O: 2.4%; Na2O: 2.8%; CaO: 5.8%; MgO: 1.8%; BaO: 0.8%; SrO: 3.2%; and ZnO: 2.8%. The initial melting temperature of the textured dry granular glaze is 1140°C. The textured dry granular glaze is applied by pouring, has a specific gravity of 1.34, and is applied in an amount of 260 g / m2.

[0058] Step 5. Place in kiln and fire at 1165°C for 45 minutes.

[0059] Step 6. Fine polishing, edge grinding, classification and packaging. The fine polishing grinding blocks include 6 groups of 800 mesh grinding blocks and 16 groups of 1000 mesh grinding blocks.

[0060] The porcelain tile sample prepared in Example 2 has a delicate feel. Figure 2 It can be seen that the porcelain tile sample also has a surface textured effect.

[0061] Figure 3 This is the effect picture of the porcelain tile surface after fine polishing using another inkjet design pattern layout in Example 2. It can be seen that the surface still has an excellent reticulated effect after fine polishing.

[0062] Comparative Example 1

[0063] The glaze is basically the same as Example 1, with the main difference being that the chemical composition of the top glaze includes: loss on ignition: 2.5%; SiO2: 55.3%; Al2O3: 27.3%; CaO: 1.1%; MgO: 0.3%; K2O: 2.8%; Na2O: 4.2%; and ZrO2: 6.5%. The top glaze is applied by pouring, has a specific gravity of 1.84, and is applied in an amount of 700g / m 2 The initial melting temperature of the glaze is 1080°C.

[0064] In Comparative Example 1, the initial melting temperature difference between the top glaze and the reticulated dry granular glaze is 40°C. Since the initial melting temperature difference between the top glaze and the reticulated dry granular glaze is too small, the two are fused together, resulting in no reticulated raised texture on the surface of the prepared porcelain tile sample.

[0065] Comparative Example 2

[0066] The invention is substantially the same as Example 1, with the main difference being that the chemical composition of the top glaze includes: loss on ignition: 5.6%; SiO2: 52.7%; Al2O3: 10.5%; CaO: 5.8%; MgO: 3.2%; K2O: 2.8%; Na2O: 5.2%; ZnO: 3.3%; BaO: 2.7%; ZrO2: 8.2%. The top glaze has an initial melting temperature of 950°C.

[0067] The initial melting temperature of the top glaze in Comparative Example 2 is too low, and the initial melting temperature difference with the reticulated dry granular glaze is 170°C. Although the top glaze and the reticulated dry granular glaze cannot be melted together, the reticulated texture produced by the melting of the top glaze results in no reticulated raised texture on the surface of the finally prepared porcelain tile sample.

[0068] Comparative Example 3

[0069] The method is basically the same as Example 1, with the main difference being that the raw materials of the textured dry particle glaze include 60 wt % of textured dry particles and 40 wt % of corundum.

[0070] The corundum content in the textured dry granular glaze of Comparative Example 3 is too high, resulting in protruding textures on the surface of the prepared porcelain tile sample, affecting the feel of the tile surface and making it rough, and also making the tile surface poor in pollution resistance.

[0071] Comparative Example 4

[0072] The method is basically the same as Example 1, with the main difference being that the raw materials of the textured dry particle glaze include 76 wt % of textured dry particles and 24 wt % of corundum.

[0073] like Figure 4 As shown, the corundum content in the reticulated dry granular glaze of Comparative Example 4 is too low, resulting in only a small amount of irregular protrusions on the surface of the prepared porcelain tile sample.

Claims

1. A method for preparing a non-slip porcelain tile with a surface texture effect, characterized in that: The following steps are involved: Applying a glaze on the surface of the brick; the glaze has a melting point of 1050-1100°C; Inkjet printing of design patterns on the surface of the brick after the glaze is applied; Applying a textured dry granule glaze on the surface of the brick after inkjet printing of the design pattern; the raw materials of the textured dry granule glaze include 64-70wt% of textured dry granules and 30-36wt% of corundum; the initial melting temperature of the textured dry granules is 1060-1110°C; the chemical composition of the textured dry granules includes: loss on ignition by mass percentage: 0.5 ~0.8%; SiO2: 54.2~58.3%; Al2O3: 17.8~20.2%; K2O: 2.7~4.6%; Na2O: 3.4~4.8%; CaO: 7.8~9.8%; MgO: 2.2~3.3%; BaO: 0.8~1.4%; SrO: 3.8~5.4%; ZnO: 3.2~4.6%; the initial melting temperature of the reticulated dry granular glaze is 1115~1140℃; the initial melting temperature of the reticulated dry granular glaze is 60~90℃ higher than that of the surface glaze; the reticulated dry granular glaze is applied by pouring glaze; the specific gravity of the reticulated dry granular glaze is 1.32~1.36, and the glaze application amount is 250~283 g / m 2 ; The tiles are fired in a kiln and polished to obtain anti-slip porcelain tiles with a surface texture effect; wherein the maximum firing temperature is 1160-1170°C.

2. The preparation method according to claim 1, wherein The chemical composition of the reticulated dry granular glaze includes, by mass percentage, loss on ignition: 0.4-0.6%; SiO2: 35.2-39.3%; Al2O3: 35.8-43.2%; K2O: 1.8-3.2%; Na2O: 2.2-3.1%; CaO: 5.2-6.8%; MgO: 1.5-2.2%; BaO: 0.5-0.9%; SrO: 2.4-3.5%; and ZnO: 2.1-3.2%.

3. The preparation method according to claim 1, characterized in that The chemical composition of the glaze includes, by mass percentage, loss on ignition: 2.8-5.2%; SiO2: 49.4-53.3%; Al2O3: 15.8-20.5%; CaO: 3.6-5.2%; MgO: 2.2-3.6%; K2O: 2.2-3.7%; Na2O: 3.2-5.8%; BaO: 2.4-5.5%; ZnO: 3.2-4.8%; and ZrO2: 8.2-9.8%.

4. The preparation method according to claim 1, wherein The glaze is applied by pouring glaze; the specific gravity of the glaze is 1.82-1.86, and the glaze amount is 600-700 g / m 2 .

5. The preparation method according to claim 1, characterized in that The firing time is 45 to 50 minutes.

6. The preparation method according to claim 1, characterized in that The glaze slurry of the reticulated dry particle glaze includes, in addition to the reticulated dry particles and corundum, auxiliary materials accounting for 200-240 wt% of the reticulated dry particles.

7. The preparation method according to claim 6, characterized in that The auxiliary materials include, by weight, 20-40 parts of sodium carboxymethyl cellulose, 15-25 parts of glycerol, 20-30 parts of ethylene glycol, 1-5 parts of preservatives, and 20-40 parts of water.

8. A non-slip ceramic tile with a surface texture effect, characterized in that: Obtained by the preparation method of the anti-slip porcelain tile with surface textured effect according to any one of claims 1 to 7.

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