A wear-resistant ceramic tile and its preparation process

Abstract

This invention relates to the field of ceramic tile technology, and more particularly to a wear-resistant ceramic tile and its preparation process. The preparation process of the wear-resistant ceramic tile includes the following steps: applying silica sol at least twice to a finished ceramic tile; and baking the finished ceramic tile with the applied silica sol to obtain the wear-resistant ceramic tile. Using raw materials such as silicate esters, silanes, and catalysts, a hybrid SiO2 film is formed on the surface of the ceramic tile through chemical self-assembly. Then, a high-temperature treatment at 350-450℃ removes excess methyl groups. Simultaneously, the high temperature causes SiO2 to slightly infiltrate to the ceramic tile surface, achieving a stable wear resistance level. Because silica sol is applied to the surface of the ceramic tile at least twice, the formed hybrid Si-O-Si nanofilm layer does not affect the original color and texture of the ceramic tile; instead, it improves the transparency of the finished ceramic tile. That is, the obtained wear-resistant ceramic tile retains the same gloss and light reflection as the original finished ceramic tile, but its wear resistance is significantly improved.

Description

Technical Field

[0001] This invention relates to the field of ceramic tile technology, and in particular to a wear-resistant ceramic tile and its preparation process. Background Technology

[0002] Most existing matte finished tiles have relatively rough surfaces to give them better matte properties. However, in abrasion resistance tests, surface roughness increases the shear force between the abrasive media (corundum powder) and the test sample surface, making them more susceptible to wear. Therefore, it is difficult for dark-colored matte finished tiles to reach the abrasion resistance level of 750 brick grade 3.

[0003] Currently, many methods improve the wear resistance of dark matte tiles by adjusting the glaze. For example, patent CN202210703701.6, "A Mullite-Reinforced Transparent Glaze and Its Preparation Method and Application," mentions improving the wear resistance of the glaze by adding mullite; patent CN202011107547.3, "A Magnesium Aluminum Spinel Wear-Resistant Full-Polish Glaze and Its Preparation Method and Application," mentions improving the wear resistance of the glaze by adding magnesium aluminum spinel / high boron strontium frit; patent CN202011422354.7, "A Wear-Resistant Glaze and Its Preparation Method," mentions improving the wear resistance of the glaze by adding carbon fiber and shape memory metal particles; and patent CN202311014604.7, "A Matte Anti-Slip Easy-Clean Ultra-Wear-Resistant Diamond Glaze, Tile and Its Preparation Method," mentions improving the wear resistance of the glaze by adding zircon sand / Ca-O, Mg-O frit. In summary, most existing research focuses on enhancing the wear resistance of glazes by adjusting the proportions of Al2O3 (Al-O), MgO (Mg-O), CaO (Ca-O), and SiO2 (Si-O) in the glaze and allowing these components to recrystallize into a new system after firing. However, there is no effective way to improve the wear resistance of finished matte tiles made with conventional glazes. Summary of the Invention

[0004] The main objective of this invention is to provide a wear-resistant ceramic tile and its preparation process, aiming to improve the technical problem that ceramic tiles obtained using conventional glazes (non-wear-resistant glazes) do not have a good way to improve their wear resistance in the prior art.

[0005] To achieve the above objectives, the present invention proposes a process for preparing wear-resistant ceramic tiles, comprising the following steps: applying silica sol to the finished ceramic tile at least twice; and baking the finished ceramic tile with silica sol applied to it to obtain the wear-resistant ceramic tile.

[0006] This solution improves the wear resistance of finished bricks through reprocessing. It uses silicon-containing raw materials and inorganic salts to attach (Si-O) and / or (Mg-O) structures to the tile surface via chemical film formation and self-assembly. This chemical self-assembly forms a hybrid SiO2 film on the tile surface. A high-temperature baking treatment at 350-450℃ allows the hybrid SiO2 film to penetrate into the glaze layer, effectively adding Si-O structures to the surface glaze. This stabilizes the wear resistance of the tile surface and removes excess methyl groups, leaving only [O-Si-O] on the surface. n The hybrid Si-O-Si nanofilm layer formed does not affect the original color and texture of the tile. On the contrary, it improves the transparency of the (matte) finished tile. That is, the gloss and light feel of the obtained wear-resistant tile are unchanged compared with the original finished tile, but the average roughness of the tile surface is reduced when observed under an optical microscope.

[0007] Specifically, this method requires applying silica sol to the tile surface at least twice. This is because applying silica sol only once can easily result in a "color bleeding" effect on the tile surface, affecting the original tile texture. Applying silica sol at least twice achieves a color neutralization effect, without affecting the original decorative effect of the tile. Furthermore, using the above method, the wear-resistant tiles obtained can achieve a stable wear resistance rating of at least 750 revolutions and level 3 for matte dark-colored tiles (such as dark gray), and a stable wear resistance rating of at least 1500 revolutions and level 3 for matte light-colored tiles (such as beige and light gray).

[0008] Preferably, the preparation steps of the silica sol include: stirring and mixing raw materials including ethanol, acid catalyst, silicate ester and silane at room temperature under sealed conditions, and aging for at least 7 days to obtain the silica sol.

[0009] The raw materials for the silica sol in this scheme include: anhydrous ethanol, acid catalyst, silicate ester and silane. The mass ratio of the above raw materials is 17-20:0.5-0.7:1:0.85-1.49. The obtained silica sol can be stably stored in ethanol for a long time. After the above raw materials are mixed evenly, they need to be aged for at least 7 days. This aging process is conducive to the full hydrolysis of silica to form stable micelles. The subsequent self-assembly process can reduce its coating defects, such as avoiding the whitening of the surface of the obtained wear-resistant ceramic tile.

[0010] Preferably, the silica sol is applied by means of dip coating, spraying, or roller coating.

[0011] Preferably, when applying the silica sol using a lifting method, the finished ceramic tile is immersed in the silica sol. The first lifting speed is 1600-1800 μm / s, and it is left to stand for 10-20 minutes before being removed. The finished ceramic tile is then immersed in the silica sol again, and the second lifting speed is 1000-1200 μm / s, and it is left to stand for 10-20 minutes before being removed. When applying silica sol using a lifting method, a single coating can cause the tile surface to become iridescent, resulting in rainbow-like light scattering and affecting the tile's gloss. Therefore, this solution uses a two-stage coating to achieve a color neutralization effect. Verification has shown that controlling the lifting speed for the first coating to 1600-1800 μm / s and the second coating to 1000-1200 μm / s achieves good color neutralization without affecting the tile's decorative effect.

[0012] Preferably, the baking temperature is 350-450℃ and the baking time is 60-120 minutes. The high-temperature treatment at 350-400℃ removes excess methyl groups and leaves the remaining [O-Si-O]n on the surface. Simultaneously, the high temperature causes a slight melting and infiltration of SiO2 into the tile surface, effectively adding a Si-O structure to the surface glaze, thus stabilizing the wear resistance of dark-colored tiles.

[0013] Preferably, the silane is octyltriethoxysilane, methyltriethoxysilane, methyltrimethoxysilane, or 3-glycidyl etheroxypropyltrimethoxysilane.

[0014] Preferably, the silicate ester is tetraethyl orthosilicate or tetramethoxysilane.

[0015] Preferably, the acid catalyst is hydrochloric acid or glacial acetic acid.

[0016] Preferably, the preparation steps of the silica sol include: mixing anhydrous ethanol, methyl magnesium chloride, and γ-glycidyl etheroxypropyltrimethoxysilane (KH-560) and reacting for 30 min to obtain component A; the mass ratio of anhydrous ethanol, methyl magnesium chloride, and KH-560 is (20-30):1:(1.1-3.1);

[0017] Anhydrous ethanol, acid catalyst, tetraethyl orthosilicate, and component A are then stirred and mixed evenly in a mass ratio of (17-20):(0.5-0.7):1:(1.13-1.49), and aged for at least 7 days to obtain silica sol. This method yields a special silica sol, which, when applied to the surface of finished bricks, can further improve wear resistance. Specifically, an epoxy structure is synthesized by ring-opening with methyl magnesium chloride and KH-560, grafting Mg-O onto triethoxysilane, followed by an acid-catalyzed reaction with tetraethyl orthosilicate, and finally demethylation (-CH3) by heating to obtain the Mg-OR-[O-Si-O]n structure.

[0018] In addition, this invention also proposes a wear-resistant ceramic tile, prepared by the wear-resistant ceramic tile preparation process described in any of the above claims. The wear-resistant ceramic tile has the same beneficial effects as the above preparation processes, which will not be elaborated further here.

[0019] Compared with existing technologies, the technical solution of this invention has the following beneficial effects: This solution uses raw materials such as silicate esters, silanes, and catalysts to form a hybrid SiO2 film on the surface of the ceramic tile through chemical self-assembly. Then, high-temperature treatment at 350-400℃ removes excess methyl groups, leaving only [O-Si-O]n on the surface. Simultaneously, the high temperature causes a slight melting and infiltration of SiO2 into the ceramic tile surface, effectively adding a Si-O structure to the surface glaze, thus stabilizing the wear resistance of the tile surface. Because silica sol is applied to the surface of the ceramic tile at least twice, the formed hybrid Si-O-Si nanofilm layer does not affect the original color and texture of the tile; instead, it improves the transparency of the (matte) finished tile. That is, the obtained wear-resistant ceramic tile retains the same gloss and light feel as the original finished tile, but its wear resistance is significantly improved. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 The images show the original finished ceramic tile and the wear-resistant ceramic tile made according to this invention after undergoing wear resistance level testing. The left side shows the original finished ceramic tile (with obvious wear marks), and the right side shows the wear-resistant ceramic tile.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] A process for preparing wear-resistant ceramic tiles includes the following steps:

[0026] Apply silica sol at least twice to the finished ceramic tiles;

[0027] The finished ceramic tile with silica sol applied is baked to obtain the wear-resistant ceramic tile. The baking temperature is 350-450℃, and the baking time is 60-120 minutes.

[0028] The silica sol can be applied by means of lifting, spraying, or rolling. When applying the silica sol by lifting, the finished ceramic tile is immersed in the silica sol. The first lifting speed is 1600-1800 μm / s, and it is left to stand for 10-20 minutes before being removed. The finished ceramic tile is then immersed in the silica sol again, and the second lifting speed is 1000-1200 μm / s. It is left to stand for 10-20 minutes before being removed.

[0029] Some tiles have a lot of impurities on their surface due to edge grinding or polishing. Therefore, this solution can add a cleaning process for these tiles: place the finished tiles to be coated in an ultrasonic cleaner for ultrasonic treatment for about 10 minutes; after taking them out, place them in an oven and dry them at 120℃ for 30 minutes to avoid excessive moisture in the finished tiles affecting the subsequent coating process; after drying, take them out and cool them to room temperature.

[0030] The preparation steps of the silica sol include:

[0031] The raw materials, including ethanol, acid catalyst, silicate ester, and silane, are stirred and mixed evenly at room temperature and aged for at least 7 days to obtain the silica sol. The silane is octyltriethoxysilane, methyltriethoxysilane, methyltrimethoxysilane, or 3-glycidyl etheroxypropyltrimethoxysilane; the silicate ester is tetraethyl orthosilicate or trimethoxysilane; and the acid catalyst is hydrochloric acid or glacial acetic acid.

[0032] Alternatively, the preparation steps of the silica sol include: mixing anhydrous ethanol, methyl magnesium chloride, and γ-glycidyl etheroxypropyltrimethoxysilane and reacting for 30-60 minutes to obtain component A; stirring and mixing anhydrous ethanol, acid catalyst, tetraethyl orthosilicate, and component A evenly and aging for at least 7 days to obtain silica sol.

[0033] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. It should be understood that the following embodiments are only used to explain the present invention and are not intended to limit the present invention.

[0034] The finished ceramic tiles used in the following embodiments and comparative examples in this plan are dark gray tiles (dark-colored tiles) with batch numbers D9185880BS and D9185914BS (light-colored tiles) produced by Qingyuan Jianyi Ceramics Co., Ltd.

[0035] Blank group

[0036] D9185880BS dark gray tiles and D9185914BS light gray tiles (original finished ceramic tiles) produced by Qingyuan Jianyi Ceramics Co., Ltd.

[0037] Example 1

[0038] A process for preparing wear-resistant ceramic tiles includes the following steps:

[0039] Place the finished ceramic tiles (the aforementioned dark and light tiles) into a beaker, fill it with water, and ultrasonically treat it in an ultrasonic cleaner for 10 minutes. Then, take it out and place it in an oven to bake at 120°C for 30 minutes. After taking it out, let it cool.

[0040] Pour silica sol into a 500ml beaker and place the beaker directly under the clamp of the immersion pulling machine. Fix the cleaned finished ceramic tile onto the clamp and perform the pulling process. During the pulling process, try to keep the air humidity below 30%. Then immerse the finished ceramic tile in the silica sol. The first pulling speed is 1700um / s. After standing for 15 minutes, remove the tile (the hybrid SiO2 film on the surface of the tile will form immediately after removal). After 1 minute, immerse the finished ceramic tile in the silica sol again. The second pulling speed is 1150um / s. After standing for 20 minutes, place the coated finished ceramic tile into a muffle furnace and bake at 350℃ for 1 hour.

[0041] The preparation steps of the silica sol include: mixing 434g of anhydrous ethanol, 18g of hydrochloric acid (0.1M), 26g of TEOS (tetraethyl orthosilicate), and 22g of MTEOS (methyltriethoxysilane), sealing the mixture, stirring at room temperature for 2 hours at a stirring speed of 500 r / min, and then aging it in a cool place for 7 days after stirring until homogeneous. The repeating structure of the film obtained on the ceramic tile surface in the above embodiment is: -[Si4O7] n -

[0042] Example 2

[0043] A process for preparing wear-resistant ceramic tiles includes the following steps:

[0044] Place the finished ceramic tiles (D9185880BS dark gray tiles and D9185914BS light gray tiles) into a beaker, fill it with water, and ultrasonically treat it in an ultrasonic cleaner for 12 minutes. Then, take it out and place it in an oven to bake at 115℃ for 35 minutes. After taking it out, let it cool.

[0045] Pour silica sol into a 500ml beaker and place the beaker directly under the clamp of the immersion lifting machine. Fix the cleaned finished ceramic tile onto the clamp and perform the lifting process. During the lifting process, keep the air humidity below 30%. Immerse the finished ceramic tile in the silica sol. The first lifting speed is 1600um / s. After standing for 20 minutes, remove the tile. After 1 minute, immerse the finished ceramic tile in the silica sol again. The second lifting speed is 1100um / s. After standing for 20 minutes, place the coated finished ceramic tile into a muffle furnace and bake at 380℃ for 1.5 hours.

[0046] The preparation steps of the silica sol include: mixing 421.4g of anhydrous ethanol, 18g of hydrochloric acid (0.1M), 26g of TEOS (tetraethyl orthosilicate), and 34.6g of octyltriethoxysilane, sealing the mixture, stirring at room temperature for 2 hours at a stirring speed of 500 r / min, and then aging it in a cool place for 7 days after stirring until homogeneous. The repeating structure of the film obtained on the ceramic tile surface in the above embodiment is: C8H 17 -[Si2O 3.5 ]n-.

[0047] Comparative Example 1

[0048] The preparation steps and parameters in this comparative example are the same as those in Example 1. The difference is that in Comparative Example 1, only one lifting process was performed on the surface of the ceramic tile to apply the silica sol.

[0049] Comparative Example 2

[0050] The preparation steps and parameters in this comparative example are the same as those in Example 1, except that the aging time in Comparative Example 2 is only 5 days.

[0051] The ceramic tiles from the blank group, Examples 1-2, and Comparative Examples 1-2 were subjected to performance testing. The specific test results are shown in the table below:

[0052]

[0053] Note: 1. The abrasion resistance test of ceramic tiles is conducted according to GB / T 3810.7-2016 (grinding with steel balls and corundum powder, characterized by rotation speed). Since this test compares worn and unworn samples, the abrasion resistance of glazed tiles is evaluated by whether visible wear marks are observed. The inner surface of light-colored tiles is less noticeable after wear than that of dark-colored tiles. Therefore, light gray tiles (light-colored tiles) have a slightly higher abrasion resistance rating than dark gray tiles (dark-colored tiles). "Pass" means passing the abrasion resistance test at 750 or 1500 revolutions, while "fail" means failing.

[0054] 2. Weathering Resistance Test: A xenon lamp aging tester was used to simulate sunlight aging under natural conditions.

[0055] The content of GB16259-2008 was modified and set to program 1 (program 1 single cycle is 42min / temperature 38℃ / blackboard temperature 63℃ / humidity 65% / light intensity 380nm / no spray → 18min / temperature 38℃ / blackboard temperature 63℃ / humidity 65% / light intensity 420nm / with spray → 20min / temperature 20℃ / blackboard temperature 38℃ / humidity 38% / light intensity 0 (no light) / no spray), and after 30 cycles of xenon lamp aging test (total irradiance is approximately 60 kWh) was performed. -1 ·m 2 ), observe the film layer to see if there is any color difference, yellowing, or peeling;

[0056] 3. Corrosion resistance test: According to GB / T 3810.13-2016, test whether the film layer after soaking in 0.1mol / L hydrochloric acid for 24h and saturated calcium hydroxide (refer to potassium hydroxide) for 8h shows whitening, peeling, or corrosion marks.

[0057] As can be seen from the test results of the blank group and Examples 1-2 in the table above, compared with the original finished tiles, the finished tiles obtained by this method after surface coating have a significantly improved wear resistance level, while the gloss and decorative effect remain unchanged from the original finished tiles. In addition, the film layer formed on the surface of the finished tiles also has good weather resistance and corrosion resistance, is not easy to fall off the tile surface, and has a long service life.

[0058] The test results of Example 1 and Comparative Examples 1-2 show that when only one lifting coating is applied to the surface of the tile, the resulting film layer has a more obvious "iridescence" effect, which will affect the presentation of the original finished tile surface texture pattern; while when the aging time is too short, the film layer formed on the tile surface is not very complete (with small bumps), and the wear resistance is poor.

[0059] Example 3

[0060] A process for preparing wear-resistant ceramic tiles includes the following steps:

[0061] Place the finished ceramic tiles (the aforementioned dark and light tiles) into a beaker, fill it with water, and ultrasonically treat it in an ultrasonic cleaner for 12 minutes. Then, take it out and place it in an oven to bake at 115°C for 35 minutes. After taking it out, let it cool.

[0062] Pour silica sol into a 500ml beaker and place the beaker directly under the clamp of the immersion lifting machine. Fix the cleaned finished ceramic tile onto the clamp and perform the lifting process. During the lifting process, keep the air humidity below 30%. Immerse the finished ceramic tile in the silica sol. The first lifting speed is 1600um / s. After standing for 20 minutes, remove the tile. After 1 minute, immerse the finished ceramic tile in the silica sol again. The second lifting speed is 1200um / s. After standing for 20 minutes, place the coated finished ceramic tile into a muffle furnace and bake at 400℃ for 1.5 hours.

[0063] The preparation steps of the silica sol include: mixing 429.7g of anhydrous ethanol, 15g of methyl magnesium chloride, and 55.3g of KH-560 and reacting for 30min to obtain component A; then mixing 147g of anhydrous ethanol, 18g of hydrochloric acid (0.1M), 26g of TEOS (tetraethyl orthosilicate), and 309g of component A, sealing the mixture, and stirring at room temperature for 2.5h at a stirring speed of 500r / min. After stirring until homogeneous, the mixture is placed in a cool place and aged for 7 days. The repeating structure of the film obtained on the ceramic tile surface in the above embodiment is: Mg-O-C3H6-O-C3H6-[Si2O] 3.5 ] n -

[0064] The wear-resistant ceramic tiles obtained in Example 3 were subjected to performance testing, and the specific test results are shown in the table below:

[0065]

[0066] As can be seen from the test results of Example 3, methyl magnesium chloride was introduced into the silica sol raw material in this example. After the silica sol was applied to the surface of the finished brick through the dip-coating process, its wear resistance could be further improved. In addition, the gloss was slightly improved, and the weather resistance and corrosion resistance were also good.

[0067] Of course, the silica sol applied to the tile can also undergo a three-stage lifting process. The wear resistance level of the wear-resistant tile obtained after three stages of lifting is similar to that after two stages of lifting. However, due to the higher cost and longer production cycle, only a two-stage lifting process is usually performed in actual production.

[0068] Example 4

[0069] The preparation steps and parameters in this embodiment are the same as in Example 1, except that the lifting speed is different, as detailed in the table below:

[0070] The speed of the first lift The speed of the second lift Example 1 1700um / s 1150um / s Example 4-1 1600um / s 1200um / s Example 4-2 1800um / s 1100um / s Example 4-3 1500um / s 1000um / s Example 4-4 1450um / s 1300um / s

[0071] The wear-resistant ceramic tiles obtained in Example 4 were subjected to performance testing, and the specific test results are shown in the table below:

[0072]

[0073]

[0074] As can be seen from the test results of Example 4, limiting the speed of the two lifting operations has a significant impact on whether the film layer on the surface of the tile will "show color". When the speed of the first lifting operation is limited to 1600-1800um / s and the speed of the second lifting operation is 1000-1200um / s, the surface of the wear-resistant tile will not "show blue", and the decorative effect of the original finished tile pattern and texture can be presented well.

[0075] Example 5

[0076] The preparation steps and parameters in this embodiment are the same as in Example 1, except that the baking temperature is different, as detailed in the table below:

[0077] Baking temperature Example 1 350℃ Example 5-1 380℃ Example 5-2 400℃ Example 5-3 420℃ Example 5-4 450℃ Example 5-5 320℃

[0078] The wear-resistant ceramic tile obtained in Example 5 was subjected to performance testing, and the specific test results are shown in the table below:

[0079]

[0080]

[0081] The test results from Example 5 show that the baking temperature mainly affects the wear resistance and weather resistance of the ceramic tile. The preferred baking temperature in this scheme is 350-450℃, which provides good wear resistance and weather resistance. When the temperature is below 350℃, the wear resistance deteriorates, the weather resistance also decreases, and the film layer may peel off.

[0082] Example 6

[0083] A process for preparing wear-resistant ceramic tiles includes the following steps:

[0084] Place the finished ceramic tiles (the aforementioned dark and light tiles) into a beaker, fill it with water, and ultrasonically treat it in an ultrasonic cleaner for 10 minutes. Then, take it out and place it in an oven to bake at 120°C for 30 minutes. After taking it out, let it cool.

[0085] Pour silica sol into a 500ml beaker and place the beaker directly under the clamp of the immersion lifting machine. Fix the cleaned finished ceramic tile onto the clamp and perform the lifting process. During the lifting process, keep the air humidity below 30%. Immerse the finished ceramic tile in the silica sol. The first lifting speed is 1600um / s. After standing for 10 minutes, remove the tile. After 1 minute, immerse the finished ceramic tile in the silica sol again. The second lifting speed is 1200um / s. After standing for 10 minutes, place the coated finished ceramic tile into a muffle furnace and bake at 400℃ for 90 minutes.

[0086] The preparation steps of silica sol include: mixing 225g of anhydrous ethanol, 10g of methyl magnesium chloride and 15g of KH-560 and reacting for 60min to obtain component A; then mixing 351g of anhydrous ethanol, 15.5g of hydrochloric acid (0.1M), 8.5g of TEOS (tetraethyl orthosilicate) and 125g of component A and sealing the mixture, stirring at room temperature for 2h at a stirring speed of 500r / min, and aging it in a cool place for 7 days after stirring evenly.

[0087] The wear-resistant ceramic tile obtained in Example 6 was subjected to performance testing, and the specific test results are shown in the table below:

[0088]

[0089] Note: The weather resistance test in Example 6 was performed using a xenon lamp aging tester with program 1, 50 cycles (total irradiance increased to 100 kWh). -1 ·m 2 ) Observe the condition of the membrane.

[0090] The test results from Example 6 show that, after optimizing the pulling speed, baking temperature, and the mass ratio of the silica sol preparation raw materials, the abrasion resistance grade of dark-colored tiles can be improved to 1500 revolutions, level 3, and the abrasion resistance grade of light-colored tiles can be improved to 2100 revolutions, level 4. The gloss level remains within the range of matte tiles, and the weather resistance is further improved. Furthermore, the tile surface does not exhibit iridescence at any angle, providing a good decorative effect.

[0091] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A process for the production of wear-resistant ceramic tiles, characterized in that, The preparation process comprises the following steps: applying silicon sol on the finished ceramic tile for at least twice; baking the finished ceramic tile with the applied silicon sol to obtain the wear-resistant ceramic tile; the baking temperature is 350-450℃, and the baking time is 60-120min; the preparation step of the silicon sol comprises: uniformly stirring and mixing raw materials including ethanol, acid catalyst, silicate and silane at room temperature, and aging for at least 7 days to obtain the silicon sol; or, the preparation step of the silicon sol comprises: mixing anhydrous ethanol, methyl magnesium chloride and γ-glycidoxypropyltrimethoxysilane, and then reacting for 30-60min to obtain component A; uniformly stirring and mixing anhydrous ethanol, acid catalyst, tetraethyl orthosilicate and component A, and aging for at least 7 days to obtain the silicon sol; the application mode of the silicon sol is pulling and lifting; when the silicon sol is applied by pulling and lifting, the finished ceramic tile is immersed in the silicon sol, the pulling and lifting speed in the first time is 1600-1800um / s, and the finished ceramic tile is taken out after standing for 10-20min; the finished ceramic tile is immersed in the silicon sol again, the pulling and lifting speed in the second time is 1000-1200um / s, and the finished ceramic tile is taken out after standing for 10-20min.

2. The process for the production of wear resistant ceramic tiles according to claim 1, characterized in that, The silane is octyl triethoxysilane, methyl triethoxysilane, methyl trimethoxysilane or 3-glycidoxypropyltrimethoxysilane.

3. The process for preparing a wear-resistant ceramic tile according to claim 1, characterized in that, The silicate is tetraethyl orthosilicate or tetramethoxysilane.

4. The process for preparing a wear-resistant ceramic tile according to claim 1, characterized in that, The acid catalyst is hydrochloric acid or glacial acetic acid.

5. A wear-resistant ceramic tile, characterized by, The wear-resistant ceramic tile is prepared by the preparation process of any one of claims 1-4.

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