A mirror-like low-gloss, non-rash glaze and its preparation method and application

Abstract

The present invention discloses a mirror-finish low-gloss, prickly heat-resistant glaze and a preparation method and application thereof, belonging to the field of material technology. The mirror-finish low-gloss, prickly heat-resistant glaze of the present invention can achieve good interlayer bonding when applied to ceramic tiles through the selection of specific preparation raw materials, with the glass phase and microcrystalline particles on the glaze surface tightly bonded. The glaze surface is smooth and presents a low-gloss mirror effect, without appearance defects such as orange peel and prickly heat, with a delicate and warm texture, and at the same time, good wear resistance and anti-slip properties when applied.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramics, and in particular to a mirror-surface low-gloss, flaky-free glaze and a preparation method and application thereof. Background Art

[0002] Currently, mainstream ceramic tiles generally adjust the raw material formula of the glaze preparation so that the glaze obtains a suitable glass phase after high-temperature melting, or use conventional ceramic tiles for polishing to achieve a fine texture effect. However, some of the melts in conventional glazes have large differences in the refractive index and reflectivity of light, resulting in an orange peel-like appearance with a large drop. The fluxing agents often introduced into the glaze will cause crystallization, which will also cause a similar orange peel appearance. It may even cause the glaze to be loosely packed during the firing process, resulting in defects similar to prickly heat, affecting the appearance of the product. Although the conventional polishing method will not cause the orange peel appearance, this processing method is very easy to damage the glaze layer structure of the tile surface and cause the tile surface to appear white.

[0003] In addition, the existing fine-textured specialties generally have problems such as unevenness and poor wear resistance, and the comprehensive cost-effectiveness is not high. Summary of the Invention

[0004] Based on the defects of the existing technology, the purpose of the present invention is to provide a mirror-like low-gloss and prickly-heat glaze. Through the selection of specific preparation raw materials, the product can have good interlayer bonding when applied to ceramic tiles, the glass phase and microcrystalline particles on the glaze surface are highly tightly bonded, the glaze surface is smooth and presents a low-gloss mirror effect, without appearance defects such as orange peel and prickly heat, the texture is delicate and warm, and at the same time, it has good wear resistance and anti-slip properties when used.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A mirror-like low-gloss, non-rash glaze comprising the following raw materials in parts by weight:

[0007] 15-25 parts of potassium feldspar, 10-15 parts of sodium feldspar, 8-15 parts of calcined kaolin, 2-5 parts of barium carbonate, 3-6 parts of calcined zinc oxide, 3-5 parts of strontium carbonate, 5-10 parts of calcined talc, 10-18 parts of the first frit, 10-20 parts of the second frit, 2-4 parts of corundum, and 2-5 parts of wollastonite.

[0008] The first frit comprises the following chemical components in percentage by mass: Al2O3 16.58-18.94%, SiO2 56.34-60.65%, K2O 3.65-4.56%, Na2O 2.35-3.58%, CaO 15.62-17.50%, MgO 2.02-3.85%;

[0009] The second frit includes the following chemical components in percentage by mass: Al2O3 18.58-20.94%, SiO2 49.34-55.15%, K2O 0.65-1.06%, Na2O 2.85-4.58%, CaO 8.62-10.50%, BaO 8.19-10.54%, ZnO 2.86-4.45%, and MgO 3.15-4.45%.

[0010] In the technical solution of the present invention, in order to enable the glaze to have an orange peel appearance without crystallization and the refraction and reflection effects caused by large height differences, while achieving a delicate texture, potassium feldspar, sodium feldspar and quartz-type minerals are used as the main raw materials, so that the glass phase formed during the firing process can achieve a low and uniform light reflectivity, thereby achieving a low-light effect. At the same time, two special compositions of frits are added for compounding. The raw materials will precipitate columnar calcium feldspar, barium feldspar and zinc-aluminum spinel crystals during firing. These evenly distributed fine crystals will not produce microcracks due to the mismatch between the expansion coefficients of the crystals and the glass phase. The glaze has high wear resistance and can also improve the fluidity of the glaze layer, effectively reduce the roughness of the glaze surface, and thus have a delicate feel. Moreover, due to the tight stacking, no prickly heat defects will be produced, so that the product has a mirror effect. On the other hand, the glaze layer formed by the two frits during high-temperature firing has a small porosity and a low light scattering rate, so it has good light transmittance, can effectively present the printed pattern of the brick surface, and has a good texture effect.

[0011] Preferably, the mirror-finish low-gloss, flaky-free glaze comprises the following chemical components in percentage by mass: Al2O3 18.10-20.12%, SiO2 49.94-58.51%, K2O 3.11-4.05%, Na2O 1.89-3.05%, CaO 4.12-6.68%, MgO 3.02-4.85%, ZnO 3.16-5.25%, BaO 4.19-6.54%, and SrO 2.01-3.15.

[0012] Different preparation raw materials will result in different glass phases and types of precipitated crystals. If the glass phase is not selected appropriately and its intrinsic strength is low, then after firing and precipitation of crystals, due to the difference in expansion coefficient, the glass phase will easily develop microcracks under the extrusion of the crystals, which will not only lead to poor wear resistance of the product, but also cause defects such as apparent orange peel and prickly heat, resulting in no mirror-like or low-light effects on the surface. In the glaze composition of the present invention, the glass phase formed by potassium, sodium, and quartz phases has low reflectivity, small gloss drop, good flatness and appearance, fine texture, ideal mirror-like effect, and anti-slip properties. At the same time, it has a high aluminum oxide content, high hardness, and good wear resistance.

[0013] Preferably, the mirror-finish low-gloss, non-rash glaze comprises the following raw materials in parts by weight:

[0014] 20-25 parts of potassium feldspar, 10-15 parts of sodium feldspar, 12-14 parts of calcined kaolin, 3-4 parts of barium carbonate, 3-4 parts of calcined zinc oxide, 3.5-4.5 parts of strontium carbonate, 5-10 parts of calcined talc, 10-14 parts of the first frit, 15-19 parts of the second frit, 2-4 parts of corundum, and 2-3 parts of wollastonite;

[0015] The mirror-like low-gloss, flaky-free glaze comprises the following chemical components in percentage by mass: Al2O3 18.15-19.29%, SiO2 53.05-55.36%, K2O 3.49-3.68%, Na2O 2.03-2.66%, CaO 4.42-5.12%, MgO 3.15-4.35%, ZnO 3.62-4.60%, BaO 4.25-4.55%, and SrO 2.93-3.13%.

[0016] The mirror-like low-gloss, prickly-heat-free glaze obtained by using the raw materials and composition prepared in the present invention can maintain a glossiness of 12 to 16°, while having high flatness, no defects such as prickly heat, and presenting an ideal mirror effect with a fine texture. When the above-mentioned preferred formula ratio is adopted, the surface texture of the product can be further improved by controlling the glass phase composition, the aluminum oxide tetrahedron ratio, and the key crystal forming raw materials, making the texture more delicate and the magnified microscopic effect better.

[0017] Another object of the present invention is to provide a ceramic tile comprising the mirror-finished low-gloss, non-rash glaze of the present invention;

[0018] The ceramic tile comprises a base, a surface glaze layer, an inkjet printing layer, a protective glaze layer and a mirror-like low-gloss, non-rash glaze which are stacked in sequence;

[0019] The surface glaze layer comprises the following raw materials in parts by weight: 8-15 parts of calcined kaolin, 15-25 parts of potassium feldspar, 15-30 parts of sodium feldspar, 5-9 parts of wollastonite, 5-10 parts of a third frit, 3-5 parts of calcined zinc oxide, 5-10 parts of zirconium silicate, 5-12 parts of quartz, 7-12 parts of calcined aluminum oxide, and 5-10 parts of a fourth frit;

[0020] More preferably, the surface glaze layer comprises the following raw materials in parts by weight: 10-12 parts of calcined kaolin, 15-18 parts of potassium feldspar, 20-25 parts of sodium feldspar, 5-6 parts of wollastonite, 7-10 parts of the third frit, 3-4 parts of calcined zinc oxide, 8-10 parts of zirconium silicate, 8-10 parts of quartz, 7-10 parts of calcined alumina, and 5-10 parts of the fourth frit;

[0021] The third frit comprises the following chemical components in percentage by mass: Al2O3 17.65-19.45%, SiO2 52.24-56.68%, K2O 4.45-6.04%, Na2O 6.34-8.01%, CaO 8.12-12.18%, and ZnO 1.01-2.45%;

[0022] The fourth frit includes the following chemical components in percentage by mass: Al2O3 10.14-15.12%, SiO2 50.14-55.68%, K2O 4.15-5.04%, Na2O 1.04-1.85%, CaO 8.12-10.18%, ZnO 4.01-5.45%, BaO 10.56-13.16%, and B2O 3 1.98-3.54%.

[0023] In existing products, there is a temperature difference between the body and the glaze when they are fired. Excessive temperature difference is not only not conducive to the discharge of gases generated during the firing process, but also causes local violent reactions due to the large temperature difference, and ultimately causes cracking defects similar to prickly heat. Therefore, in the ceramic tile product described in the present invention, in addition to the use of mirror-like low-gloss prickly heat-free glaze, the inventors have also optimized and developed the surface glaze. On the one hand, they introduced a type of raw material with a temperature difference close to that of the body material during firing, thereby reducing the temperature difference between the glaze and the body layer during the firing process, forming an exhaust space between the two, and at the same time introducing The addition of a calcium-sodium frit and a third and fourth frit containing BaO and B2O3 can make the glaze present a certain matte effect after firing. At the same time, the network structure formed by the aluminum oxide tetrahedron formed by the aluminum source and the silicon oxide tetrahedron in the glass phase has a high density, an overall hard texture, good wear resistance, and a high bonding strength with the body layer. If conventional glaze materials are used to prepare the glaze, not only may there be appearance problems, low gloss, and the inability to form a low-light mirror effect, but there will also be prickly heat defects, and even wear resistance and texture will be affected by the texture of the glaze and the bonding between layers.

[0024] Preferably, the glaze layer includes the following chemical components in mass percentage: Al2O3 20.12~25.56%, SiO2 52.14~59.14%, K2O 2.15~3.25%, Na2O 2.85~4.51%, CaO 3.05~5.18%, B2O3 0.34~0.51%, MgO 0.22~1.05%, ZnO 2.15~3.85%, BaO 0.39~1.24%, ZrO 2 4.54~7.65%.

[0025] More preferably, the glaze layer comprises the following chemical components in percentage by mass: Al2O3 20.33-23.23%, SiO2 55.14-58.14%, K2O 2.55-2.85%, Na2O 2.96-3.12%, CaO 3.72-4.23%, B2O3 0.34-0.48%, MgO 0.29-0.44%, ZnO 3.36-3.59%, BaO 0.57-0.98%, ZrO 5.28-6.48%

[0026] Another object of the present invention is to provide a method for preparing the ceramic tile, comprising the following steps:

[0027] (1) providing a green body layer, and then polishing the green body layer;

[0028] (2) spraying water on the polished body layer to cool it down, and then providing a glaze layer on the body layer;

[0029] (3) printing a pattern on the glaze layer to form an inkjet printing layer;

[0030] (4) providing a protective glaze layer on the inkjet printing layer;

[0031] (5) Applying a mirror-like low-gloss, non-rash glaze on the protective glaze layer to obtain a rough blank;

[0032] (6) firing the rough blank at 1180-1200° C., cooling, and grinding the edges to obtain the ceramic tile.

[0033] Preferably, the raw materials for preparing the protective glaze layer are the same as those for the mirror-finish low-gloss, non-tarnished glaze.

[0034] More preferably, the protective glaze layer is provided by electrostatic spraying of a protective glaze slurry, wherein the protective glaze slurry comprises water and raw materials for preparing a mirror-finished low-gloss non-prickly heat glaze, with a specific gravity of 1.18 to 1.28 g / mL and a glaze application amount of 105 to 135 g / m 2 .

[0035] More preferably, the mirror surface low gloss no-prickly heat glaze is provided by spraying the mirror surface low gloss no-prickly heat glaze slurry, wherein the mirror surface low gloss no-prickly heat glaze slurry comprises water and the preparation raw materials of the mirror surface low gloss no-prickly heat glaze, has a specific gravity of 1.88-1.92 g / mL, a spraying flow rate of 33-38 s / 100 mL, and a glazing amount of 410-450 g / m 2 .

[0036] As described above, the raw materials for preparing the mirror-finished low-gloss and flaky-free glaze of the present invention can form a glaze layer with high density and low probability of forming microcracks during the firing process, and can effectively display the printed pattern. Diluting it into a glaze slurry for protective glaze and using it as a protective glaze can not only avoid flaky-finger glaze and orange peel-like defects, but also form a gradient setting with the mirror-finished low-gloss and flaky-free glaze, which has better adaptability.

[0037] Preferably, the surface glaze layer is provided by spraying a surface glaze slurry, wherein the surface glaze slurry comprises water and raw materials for preparing the surface glaze layer, has a specific gravity of 1.88 to 1.92 g / mL, a spraying flow rate of 33 to 38 s / 100 mL, and a glaze application amount of 410 to 450 g / m 2 .

[0038] Preferably, the green body layer comprises the following raw materials in parts by weight: 12-20 parts of kaolin, 20-25 parts of potassium-sodium sand, 15-20 parts of ball clay, 5-10 parts of bentonite, 20-25 parts of potassium-sodium water-ground powder, 3-8 parts of calcined talc, and 2-5 parts of pyrophyllite.

[0039] It should be noted that the chemical composition of the mirror-finished low-gloss, flaky-free glaze and the frit in its preparation raw materials, as well as the surface glaze layer and the frit in its preparation raw materials, in addition to the substances mentioned above, also includes trace amounts of residual substances (such as impurities and loss on ignition). It is well known to those skilled in the art that this is an inevitable existence. Therefore, even without further detailed explanation, the scheme is complete and clear when these substances themselves do not affect the physical properties and performance of the product. Those skilled in the art will not think that the scheme is limited due to the neglect of these components.

[0040] The beneficial effect of the present invention is that the present invention provides a mirror-like low-gloss, non-prickly heat glaze. Through the selection of specific preparation raw materials, the product can have good interlayer bonding when applied to ceramic tiles, the glass phase and microcrystalline particles on the glaze surface are tightly bonded, the glaze surface is smooth and presents a low-gloss mirror effect, there are no appearance defects such as orange peel and prickly heat, the texture is delicate and warm, and at the same time, it has good wear resistance and anti-slip properties when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the brick surface of the ceramic tile described in Example 1 of the present invention.

[0042] Figure 2 This is a schematic diagram of the brick surface of the ceramic tile described in Comparative Example 4 of the present invention.

[0043] Figure 3 This is a schematic diagram of the brick surface of the ceramic tile described in Comparative Example 6 of the present invention.

[0044] Figure 4 This is a schematic diagram of the brick surface of the ceramic tile described in Comparative Example 1 of the present invention.

[0045] Figure 5 This is a schematic diagram of the brick surface of the ceramic tile described in Comparative Example 3 of the present invention. DETAILED DESCRIPTION

[0046] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments and comparative examples. Its purpose is to understand the content of the present invention in detail, rather than to limit the present invention. All other embodiments obtained by those of ordinary skill in the art without making creative work premise all fall within the protection scope of the present invention. The experimental reagents and instruments involved in the implementation of the present invention are all conventional common reagents and instruments unless otherwise specified.

[0047] Example 1

[0048] The present invention relates to a mirror-like low-gloss, anti-prickly heat glaze and a preparation method and application thereof. The mirror-like low-gloss, anti-prickly heat glaze is provided on a ceramic tile. The preparation method of the ceramic tile is as follows:

[0049] (1) providing a green body layer, wherein the moisture content of the green body layer is less than 0.3% and the strength is 2 MPa, and then polishing the green body layer;

[0050] The green body layer comprises the following raw materials in parts by weight: 15 parts of kaolin, 25 parts of potassium-sodium sand, 25 parts of ball clay, 7 parts of bentonite, 20 parts of potassium-sodium water-ground powder, 5 parts of burned talc, and 3 parts of pyrophyllite;

[0051] (2) Spray 25g / m 2 The water is cooled to reduce the pore opening rate, and then a glaze layer is provided on the body layer;

[0052] The surface glaze layer is provided by spraying a glaze slurry for the surface glaze layer. The glaze slurry for the surface glaze layer includes raw materials for preparing the surface glaze layer, 40 wt% of water, 0.15 wt% of sodium methylcellulose, and 0.35 wt% of sodium tripolyphosphate. After mixing, the glaze slurry is ball milled and sieved through 325 meshes, with a sieve residue of 0.6-0.8 wt%. The obtained glaze slurry has a specific gravity of 1.9 g / mL, a spray flow rate of 35 s / 100 mL, and a glaze application amount of 420 g / m 2 ;

[0053] The raw materials for preparing the surface glaze layer include the following components in parts by weight: 12 parts of calcined kaolin, 15 parts of potassium feldspar, 22 parts of sodium feldspar, 5 parts of wollastonite, 8 parts of the third frit, 3 parts of calcined zinc oxide, 10 parts of zirconium silicate, 10 parts of quartz, 10 parts of calcined alumina, and 5 parts of the fourth frit;

[0054] The third frit includes the following chemical components in percentage by mass: Al2O3 18.61%, SiO2 55.23%, K2O 4.85%, Na2O 7.38%, CaO 11.81%, and ZnO 1.25;

[0055] The fourth frit includes the following chemical components in percentage by mass: Al2O3 10.22%, SiO2 50.90%, K2O 4.70%, Na2O 1.22%, CaO 10.11%, ZnO 4.79%, BaO 13.16%, B2O 3 2.92%;

[0056] (3) printing a pattern on the glaze layer to form an inkjet printing layer;

[0057] (4) providing a protective glaze layer on the inkjet printing layer;

[0058] (5) Applying a mirror-like low-gloss, non-rash glaze on the protective glaze layer to obtain a rough blank;

[0059] When setting the protective glaze layer and the mirror low-gloss and flaky-free glaze, the protective glaze layer is sprayed with the protective glaze slurry through an electrostatic glaze spraying cabinet, and the mirror low-gloss and flaky-free glaze is set by spraying the mirror low-gloss and flaky-free glaze slurry. The mirror low-gloss and flaky-free glaze slurry includes the preparation raw materials of the mirror low-gloss and flaky-free glaze, and also includes 40wt% of water, 0.15wt% of sodium methyl cellulose, and 0.35wt% of sodium tripolyphosphate. After mixing, the glaze slurry is also ball-milled and sieved through 325 meshes, with a sieve residue of 0.6-0.8wt%. The obtained glaze slurry has a specific gravity of 1.9g / mL, a spray flow rate of 35s / 100mL, and a glazing amount of 420g / m 2 ;

[0060] The raw materials for preparing the mirror-surface low-gloss and flaky-free glaze include the following components in parts by weight: 20 parts of potassium feldspar, 12 parts of sodium feldspar, 12 parts of calcined kaolin, 3 parts of barium carbonate, 4 parts of calcined zinc oxide, 4 parts of strontium carbonate, 10 parts of calcined talc, 12 parts of a first frit, 18 parts of a second frit, 2 parts of corundum (325 mesh), and 3 parts of wollastonite;

[0061] The first frit includes the following chemical components in percentage by mass: Al2O3 17.13%, SiO2 56.46%, K2O 4.03%, Na2O 3.05%, CaO 16.02%, MgO 2.27%;

[0062] The second frit includes the following chemical components in percentage by mass: Al2O3 19.29%, SiO2 49.83%, K2O 0.83%, Na2O 3.54%, CaO 8.85%, BaO 9.32%, ZnO 3.61%, and MgO 3.19%.

[0063] The glaze slurry of the protective glaze layer is a glaze slurry obtained by further diluting the mirror low-gloss non-rash glaze slurry with water. The specific gravity of the glaze slurry is 1.18g / mL, and the glaze amount is 105g / m 2 .

[0064] (6) The rough blank is fired at 1186° C. for 40 minutes, cooled, and edge-ground to obtain the ceramic tile.

[0065] Example 2

[0066] The embodiment of the mirror-like low-gloss, anti-prickly heat glaze and its preparation method and application according to the present invention is different from Example 1 only in that the raw materials for preparing the surface glaze layer include the following components in parts by weight:

[0067] 10 parts of calcined kaolin, 18 parts of potassium feldspar, 20 parts of sodium feldspar, 6 parts of wollastonite, 7 parts of the third frit, 3 parts of calcined zinc oxide, 8 parts of zirconium silicate, 10 parts of quartz, 8 parts of calcined alumina, and 10 parts of the fourth frit.

[0068] Example 3

[0069] The embodiment of the mirror-finish low-gloss, anti-prickly heat glaze and its preparation method and application according to the present invention is different from Example 1 only in that the raw materials for preparing the surface glaze layer include the following components in parts by weight:

[0070] 15 parts of calcined kaolin, 15 parts of potassium feldspar, 25 parts of sodium feldspar, 6 parts of wollastonite, 10 parts of the third frit, 3 parts of calcined zinc oxide, 8 parts of zirconium silicate, 8 parts of quartz, 7 parts of calcined alumina, and 5 parts of the fourth frit.

[0071] Example 4

[0072] The embodiment of the mirror-finish low-gloss, anti-prickly heat glaze and its preparation method and application according to the present invention is different from Example 1 only in that the raw materials for preparing the mirror-finish low-gloss, anti-prickly heat glaze include the following components in parts by weight:

[0073] 25 parts of potassium feldspar, 10 parts of sodium feldspar, 14 parts of calcined kaolin, 3 parts of barium carbonate, 4 parts of calcined zinc oxide, 3 parts of strontium carbonate, 6 parts of calcined talc, 14 parts of the first frit, 15 parts of the second frit, 2 parts of corundum (325 mesh), and 3 parts of wollastonite.

[0074] Example 5

[0075] The embodiment of the mirror-finish low-gloss, anti-prickly heat glaze and its preparation method and application according to the present invention is different from Example 1 only in that the raw materials for preparing the mirror-finish low-gloss, anti-prickly heat glaze include the following components in parts by weight:

[0076] 25 parts of potassium feldspar, 15 parts of sodium feldspar, 12 parts of calcined kaolin, 3 parts of barium carbonate, 3 parts of calcined zinc oxide, 3 parts of strontium carbonate, 5 parts of calcined talc, 12 parts of the first frit, 15 parts of the second frit, 3 parts of corundum (325 mesh), and 2 parts of wollastonite.

[0077] Example 6

[0078] The embodiment of the mirror-like low-gloss, non-rash glaze and its preparation method and application described in the present invention is different from embodiment 2 only in that:

[0079] The raw materials for preparing the mirror surface low-gloss anti-prickly heat glaze include the following components in parts by weight:

[0080] 25 parts of potassium feldspar, 10 parts of sodium feldspar, 14 parts of calcined kaolin, 3 parts of barium carbonate, 4 parts of calcined zinc oxide, 4 parts of strontium carbonate, 6 parts of calcined talc, 14 parts of the first frit, 15 parts of the second frit, 2 parts of corundum (325 mesh), and 3 parts of wollastonite.

[0081] Example 7

[0082] The embodiment of the mirror-like low-gloss non-rash glaze and its preparation method and application described in the present invention is different from Example 2 only in that the glaze slurry glazing amount of the surface glaze layer is 430g / m 2 The glaze amount of the mirror low gloss non-rash glaze is 430g / m 2 .

[0083] Example 8

[0084] The embodiment of the mirror-like low-gloss non-rash glaze and its preparation method and application described in the present invention is different from Example 1 only in that the glaze slurry glazing amount of the surface glaze layer is 450g / m 2 The glaze amount of the mirror low gloss non-rash glaze is 450g / m 2 .

[0085] Example 9

[0086] The embodiment of the mirror-finish low-gloss, anti-prickly heat glaze and its preparation method and application described in the present invention differs from Example 1 only in that the raw materials for preparing the surface glaze layer include the following components in parts by weight: 12 parts of calcined kaolin, 18 parts of potassium feldspar, 20 parts of sodium feldspar, 5 parts of wollastonite, 8 parts of the third frit, 3 parts of calcined zinc oxide, 7 parts of zirconium silicate, 12 parts of quartz, 10 parts of calcined alumina, and 5 parts of the fourth frit;

[0087] Example 10

[0088] The embodiment of the mirror-finish low-gloss, flaky-free glaze and its preparation method and application described in the present invention differs from Example 1 only in that the raw materials for preparing the surface glaze layer include the following components in parts by weight: 15 parts of calcined kaolin, 15 parts of potassium feldspar, 22 parts of sodium feldspar, 5 parts of wollastonite, 8 parts of the third frit, 3 parts of calcined zinc oxide, 10 parts of zirconium silicate, 8 parts of quartz, 9 parts of calcined alumina, and 5 parts of the fourth frit.

[0089] Example 11

[0090] The embodiment of the mirror-finish low-gloss, anti-prickly heat glaze and its preparation method and application described in the present invention differs from Example 1 only in that the raw materials for preparing the mirror-finish low-gloss, anti-prickly heat glaze include the following components in parts by weight: 20 parts of potassium feldspar, 14 parts of sodium feldspar, 10 parts of calcined kaolin, 4 parts of barium carbonate, 4 parts of calcined zinc oxide, 4 parts of strontium carbonate, 10 parts of calcined talc, 12 parts of a first frit, 15 parts of a second frit, 3 parts of corundum (325 mesh), and 4 parts of wollastonite;

[0091] Example 12

[0092] The embodiment of the mirror-finish low-gloss, anti-prickly heat glaze and its preparation method and application described in the present invention differs from Example 1 only in that the raw materials for preparing the mirror-finish low-gloss, anti-prickly heat glaze include the following components in parts by weight: 20 parts of potassium feldspar, 14 parts of sodium feldspar, 10 parts of calcined kaolin, 3 parts of barium carbonate, 4 parts of calcined zinc oxide, 4 parts of strontium carbonate, 10 parts of calcined talc, 12 parts of a first frit, 17 parts of a second frit, 4 parts of corundum (325 mesh), and 3 parts of wollastonite;

[0093] Comparative Example 1

[0094] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0095] The raw materials for preparing the surface glaze layer include the following components in parts by weight: 15 parts of calcined kaolin, 22 parts of potassium feldspar, 15 parts of sodium feldspar, 6 parts of wollastonite, 2 parts of zinc oxide, 15 parts of quartz, 9 parts of aluminum oxide, 10 parts of nepheline, and 8 parts of zirconium silicate.

[0096] Comparative Example 2

[0097] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0098] The raw materials for preparing the glaze layer include the following components in parts by weight:

[0099] 23 parts of calcined kaolin, 6 parts of ball clay, 17.5 parts of potassium feldspar, 16 parts of sodium feldspar, 16 parts of quartz, 5 parts of calcined alumina, 14.5 parts of nepheline, and 2 parts of zinc oxide.

[0100] Comparative Example 3

[0101] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0102] The raw materials for preparing the glaze layer include the following components in parts by weight:

[0103] 10 parts of calcined kaolin, 20 parts of potassium feldspar, 15 parts of sodium feldspar, 12 parts of zirconium silicate, 10 parts of quartz, 3 parts of calcined alumina, 15 parts of the fourth frit, 10 parts of nepheline, 3 parts of barium carbonate, and 2 parts of burned talc.

[0104] Comparative Example 4

[0105] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0106] The raw materials for preparing the mirror surface low-gloss anti-prickly heat glaze include the following components in parts by weight:

[0107] 7 parts of potassium feldspar, 10 parts of sodium feldspar, 8 parts of calcined kaolin, 6 parts of barium carbonate, 3 parts of calcined zinc oxide, 9 parts of calcined talc, 7 parts of the first frit, 18 parts of the second frit, 4 parts of zirconium silicate, 7 parts of nepheline, 15 parts of the fourth frit, and 6 parts of calcite.

[0108] Comparative Example 5

[0109] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0110] The raw materials for preparing the mirror surface low-gloss anti-prickly heat glaze include the following components in parts by weight:

[0111] 22 parts of potassium feldspar, 15 parts of sodium feldspar, 10 parts of calcined kaolin, 3 parts of barium carbonate, 3 parts of calcined zinc oxide, 4 parts of strontium carbonate, 4 parts of calcined talc, 8 parts of the first frit, 15 parts of the second frit, 3 parts of alumina, and 3 parts of wollastonite.

[0112] Comparative Example 6

[0113] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0114] The raw materials for preparing the mirror surface low-gloss anti-prickly heat glaze include the following components in parts by weight:

[0115] 12 parts of potassium feldspar, 20 parts of sodium feldspar, 12 parts of calcined kaolin, 3 parts of barium carbonate, 4 parts of calcined zinc oxide, 4 parts of strontium carbonate, 10 parts of calcined talc, 10 parts of the first frit, 18 parts of the second frit, 2 parts of corundum (325 mesh), and 7 parts of wollastonite.

[0116] Comparative Example 7

[0117] A mirror-finish low-gloss, flaky-free glaze and its preparation method and application, which differ from Example 1 only in that the raw materials for preparing the mirror-finish low-gloss, flaky-free glaze include the following components in parts by weight: 20 parts of potassium feldspar, 20 parts of sodium feldspar, 13 parts of calcined kaolin, 3 parts of barium carbonate, 3 parts of calcined zinc oxide, 6 parts of strontium carbonate, 6 parts of calcined talc, 17 parts of a second frit, 5 parts of aluminum oxide, and 7 parts of wollastonite.

[0118] Comparative Example 8

[0119] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0120] The raw materials for preparing the mirror-like low-gloss, non-rash glaze include the following components in parts by weight: 25 parts of potassium feldspar, 15 parts of sodium feldspar, 15 parts of calcined kaolin, 1 part of barium carbonate, 4 parts of calcined zinc oxide, 6 parts of strontium carbonate, 8 parts of calcined talc, 17 parts of the first frit, 5 parts of aluminum oxide, and 7 parts of wollastonite.

[0121] Comparative Example 9

[0122] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0123] The first frit is replaced by a fifth frit, which includes the following chemical composition in percentage: Al2O39.49%, SiO258.56%, K2O8.03%, Na2O0.55%, CaO12.22%, MgO0.75%, and ZnO9.59%.

[0124] Comparative Example 10

[0125] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0126] The first frit is replaced by a sixth frit, which includes the following chemical composition in percentage: Al2O3 19.19%, SiO2 61.41%, K2O 3.97%, Na2O 7.05%, CaO 6.93%, MgO 0.15%, and ZnO 1.01%.

[0127] Comparative Example 11

[0128] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0129] The second frit is replaced by a seventh frit, which includes the following chemical composition in percentage: Al2O3 18.59%, SiO2 54.03%, K2O 5.33%, Na2O 1.64%, CaO 8.55%, BaO 0.12%, ZnO 2.91%, MgO 2.19%, SrO 5.73%.

[0130] Comparative Example 12

[0131] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0132] The second frit is replaced by an eighth frit, which includes the following chemical composition in percentage: Al2O3 19.55%, SiO2 49.06%, K2O 8.32%, Na2O 3.72%, CaO 4.45%, BaO 0.24%, ZnO 4.92%, MgO 2.68%, SrO 6.64%.

[0133] Comparative Example 13

[0134] A mirror-like low-gloss, non-rash glaze and its preparation method and application, the difference from Example 1 is only that:

[0135] The ceramic tile is not provided with a protective glaze layer.

[0136] The chemical composition of the surface glaze layer of each embodiment and comparative example and the chemical composition of the mirror low-gloss non-rash glaze are shown in Tables 1 and 2. It should be noted that, in addition to the chemical components described, Tables 1 and 2 also include a very small amount of other unavoidable components (such as impurities or ignition loss, etc.), which are not listed here one by one.

[0137] Table 1

[0138]

[0139] Table 2

[0140]

[0141]

[0142] Effect Example 2

[0143] In order to verify the various properties of the ceramic tiles of the present invention, the ceramic tiles prepared in the embodiments and comparative examples were subjected to the following tests:

[0144] (1) Glossiness test: WGG60-E4 photometer was used for testing in accordance with ISO-2767 and GB8941.2.

[0145] (2) Touch test: 10 testers were selected to touch each product and evaluate its touch (blindfolded). Pearls were used as a reference. Pearls have a delicate and smooth touch. The testers evaluated the touch of the products in comparison and gave scores. The closer the touch is to pearls, the higher the score. Conversely, the rougher or smoother the touch, the lower the score. The scores were averaged. 9-10 points were considered excellent, 7-8 points were considered qualified, and below 7 points were considered unqualified.

[0146] (3) Appearance test: Confirm whether the surface of the tile is flat (with the mirror as a reference), observe whether there are defects such as orange peel, prickly heat, glaze shrinkage, etc., and whether the gloss of the surface is uniform.

[0147] (4) Wear resistance test: Tested according to GB / T4100-2015.

[0148] (5) Anti-slip test: Tested according to GB / T4100.3-1999 standard.

[0149] The test results are shown in Table 3.

[0150] Table 3

[0151]

[0152]

[0153]

[0154]

[0155] From the results, it can be seen that the ceramic tiles prepared by the mirror low-gloss non-rash glaze of the present invention have ideal comprehensive properties, such as Figure 1 As shown, it not only has moderate glossiness and high appearance flatness, but also has no obvious appearance defects, especially no defects such as prickly heat and orange peel similar to existing products, but also has an ideal low-light mirror effect. At the same time, the product has high wear resistance and anti-slip properties. The main reason is that the raw materials for preparing the mirror low-gloss prickly heat-free glaze of the present invention will not produce defects such as crystallization or large differences in refraction and reflection effects after firing, achieving a good appearance and low-light mirror effect. At the same time, the generated glass phase and microcrystals are evenly distributed without microcracks and have a high arrangement density. Therefore, it not only has a delicate texture, but also has good anti-slip and wear resistance. Since the glaze has good light transmittance, there will be no uneven surface gloss when presenting printed patterns.

[0156] In contrast, although the mirror-finished low-gloss, non-prickly heat glazes described in Comparative Examples 4 to 6 use the same first and second frits, other raw materials are used improperly, and the formula is similar to that of existing products. Such a formula may cause the product to have obvious prickly heat or orange peel defects, poor flatness, low density of arrangement of glass phase and microcrystalline grains, and easy occurrence of microcracks. Therefore, the texture of the product is also poor, with a rough or greasy feel, poor anti-slip and wear resistance, such as Figure 2 and 3As shown, the product of Comparative Example 4 has a high gloss, cannot achieve a mirror effect, and feels very slippery, while the product of Comparative Example 6 has an appearance defect similar to orange peel. The first and second frits are not introduced into the products of Comparative Examples 7 and 8, and effective columnar crystals cannot be precipitated, the glaze density is low, the appearance is poor, and the wear resistance is poor; the frits used in the products of Comparative Examples 9 to 12 are not of the type specified by the present invention, and they are also unable to achieve the ideal glaze effect, and the overall performance of the products is poor, which fully demonstrates that the raw materials for preparing the mirror low-gloss and flaky-resistant glaze in the products of the present invention, whether frits or other components, cannot achieve the ideal mirror low-gloss effect and performance if the appropriate type is not selected. Further preferably, under appropriate ingredients, the formula and corresponding chemical composition of the raw materials for preparing the mirror low-gloss and flaky-resistant glaze used in Examples 1 to 10 are better than those in Examples 11 and 12, so the flatness is higher and the touch is more delicate and warm.

[0157] In addition, the ceramic tile product of the present invention also needs to use specific raw materials when constructing the glaze surface, so as to avoid excessive temperature difference between the glaze layer and the body layer during firing, thereby causing appearance defects and performance defects. As shown in Comparative Examples 1 to 3, the raw materials used in the preparation of the glaze layer are similar to those of conventional glaze products. Among them, the amount of zinc and zirconium added to the materials used in the product of Comparative Example 1 is relatively small, and no B2O3 is introduced. During the firing process, the product has obvious temperature differences between the layers, and the problem of untimely exhaust occurs. The product has obvious prickly heat defects, and the gloss of the product is lower. Figure 4 As shown; Comparative Examples 2 and 3 introduce different raw materials for the preparation of the products, and neither introduces zinc oxide, while Comparative Example 3 uses a large amount of barium source material. Obviously, the product cannot present an ideal light perception, has low gloss and a rough texture, and its wear resistance and anti-slip properties are also not ideal, especially the product in Comparative Example 3, such as Figure 5 As shown, the prickly heat defect of the product is very obvious.

[0158] According to the comparison between the products of Examples 1 to 3 and Examples 9 to 10, it can be seen that when the types of raw materials for preparing the glaze layer are the same, the products prepared according to the formula and chemical composition ratio described in Examples 1 to 3 are better in touch and smoothness.

[0159] In addition, the mirror-finished low-gloss, no-prickly-heat glaze of the present invention needs to be used together with a protective glaze, that is, a gradient layer needs to be constructed for the raw materials for preparing the mirror-finished low-gloss, no-prickly-heat glaze. Otherwise, although the ceramic tile product has ideal gloss and wear resistance based on the mirror-finished low-gloss, no-prickly-heat glaze, it will still have problems such as poor texture, appearance defects and poor anti-slip properties.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A mirror-like low-gloss, non-rash glaze, characterized in that: The preparation comprises the following raw materials in parts by weight: 15-25 parts of potassium feldspar, 10-15 parts of sodium feldspar, 8-15 parts of calcined kaolin, 2-5 parts of barium carbonate, 3-6 parts of calcined zinc oxide, 3-5 parts of strontium carbonate, 5-10 parts of calcined talc, 10-18 parts of the first frit, 10-20 parts of the second frit, 2-4 parts of corundum, and 2-5 parts of wollastonite; The first frit comprises the following chemical components in percentage by weight: Al2O3 16.58-18.94%, SiO2 56.34-60.65%, K2O 3.65-4.56%, Na2O 2.35-3.58%, CaO 15.62-17.50%, and MgO 2.02-3.85%; the sum of the total percentage by weight of the chemical components is 100%; The second frit comprises the following chemical components in percentage by weight: Al2O3 18.58-20.94%, SiO2 49.34-55.15%, K2O 0.65-1.06%, Na2O 2.85-4.58%, CaO 8.62-10.50%, BaO 8.19-10.54%, ZnO 2.86-4.45%, and MgO 3.15-4.45%; the sum of the total percentage by weight of the chemical components is 100%; The raw materials for preparation will precipitate columnar anorthite, celsium feldspar and zinc-aluminum spinel crystals during firing.

2. The mirror-finish low-gloss, non-rash glaze according to claim 1, characterized in that: The mirror-finish low-gloss, flaky-free glaze comprises the following chemical components in percentage by mass: Al2O3 18.10-20.12%, SiO2 49.94-58.51%, K2O 3.11-4.05%, Na2O 1.89-3.05%, CaO 4.12-6.68%, MgO 3.02-4.85%, ZnO 3.16-5.25%, BaO 4.19-6.54%, and SrO 2.01-3.

15.

3. A ceramic tile, characterized in that: Including the mirror-finished low-gloss, non-rash glaze according to claim 1 or 2; The ceramic tile comprises a base, a surface glaze layer, an inkjet printing layer, a protective glaze layer and a mirror-like low-gloss, non-rash glaze which are stacked in sequence; The surface glaze layer comprises the following raw materials in parts by weight: 8-15 parts of calcined kaolin, 15-25 parts of potassium feldspar, 15-30 parts of sodium feldspar, 5-9 parts of wollastonite, 5-10 parts of a third frit, 3-5 parts of calcined zinc oxide, 5-10 parts of zirconium silicate, 5-12 parts of quartz, 7-12 parts of calcined aluminum oxide, and 5-10 parts of a fourth frit; The third frit includes the following chemical components in percentage by mass: Al2O3 17.65-19.45%, SiO2 52.24-56.68%, K2O 4.45-6.04%, Na2O 6.34-8.01%, CaO 8.12-12.18%, and ZnO 1.01-2.45%; The fourth frit includes the following chemical components in percentage by mass: Al2O3 10.14~15.12%, SiO2 50.14~55.68%, K2O 4.15~5.04%, Na2O 1.04~1.85%, CaO 8.12~10.18%, ZnO 4.01~5.45%, BaO 10.56~13.16%, and B2O3 1.98~3.54%.

4. The ceramic tile according to claim 3, characterized in that: The surface glaze layer includes the following mass percentages: Al2O3 20.12~25.56%, SiO2 52.14~59.14%, K2O 2.15~3.25%, Na2O 2.85~4.51%, CaO 3.05~5.18%, B2O3 0.34~0.51%, MgO 0.22~1.05%, ZnO 2.15~3.85%, BaO 0.39~1.24%, and ZrO 4.54~7.65%.

5. The method for preparing ceramic tiles according to claim 3 or 4, characterized in that: The following steps are involved: (1) Setting a green body layer and then polishing the green body layer; (2) Spraying water on the polished body layer to cool it down, and then providing a glaze layer on the body layer; (3) Printing a pattern on the glaze layer to form an inkjet printing layer; (4) providing a protective glaze layer on the inkjet printing layer; (5) Apply mirror-like low-gloss, non-rash glaze on the protective glaze layer to obtain a rough blank; (6) The rough blank is fired at 1180-1200°C, cooled, and edge-ground to obtain the ceramic tile.

6. The method for preparing ceramic tiles according to claim 5, wherein: The raw materials for preparing the protective glaze layer are the same as those for the mirror-finish low-gloss, non-emulsifying glaze.

7. The method for preparing ceramic tiles according to claim 6, characterized in that: The protective glaze layer is provided by electrostatically spraying a protective glaze slurry, wherein the protective glaze slurry comprises water and raw materials for preparing a mirror-like low-gloss non-prickly heat glaze, with a gram weight of 1.18-1.28 g / mL and an application amount of 105-135 g / m 2 .

8. The method for preparing ceramic tiles according to claim 6, wherein: The mirror surface low gloss and no-prickly heat glaze is set by spraying the mirror surface low gloss and no-prickly heat glaze slurry, the mirror surface low gloss and no-prickly heat glaze slurry includes water and the preparation raw materials of the mirror surface low gloss and no-prickly heat glaze, the gram weight is 1.88-1.92 g / mL, the spray flow rate is 33-38 s / 100 mL, and the application amount is 410-450 g / m 2 .

9. The method for preparing ceramic tiles according to claim 5, wherein: The surface glaze layer is provided by spraying the surface glaze slurry, wherein the surface glaze slurry comprises water and the raw materials for preparing the surface glaze layer, with a gram weight of 1.88-1.92 g / mL, a spray flow rate of 33-38 s / 100 mL, and an application amount of 410-450 g / m 2 .

10. The method for preparing ceramic tiles according to claim 5, wherein: The green body layer comprises the following raw materials in parts by weight: 12-20 parts of calcined kaolin, 20-25 parts of potassium-sodium sand, 15-20 parts of ball clay, 5-10 parts of bentonite, 20-25 parts of potassium-sodium water-ground powder, 3-8 parts of burned talc, and 2-5 parts of pyrophyllite.

Images