Surface treatment method for ceramic tile with concave-convex textures

Abstract

The invention discloses a method for treating the surface of a ceramic tile with concave-convex textures, which comprises the following steps of: before super-cleaning and bright treatment of the ceramic tile, firstly applying transparent anti-fouling wax liquid capable of realizing rapid curing on the surface of the ceramic tile, and accumulating and pre-filling the concave-convex textures by the wax liquid under the rotation of a polishing and brushing grinding tool, therefore, a transparent antifouling silicone oil coating is formed on the surface of the ceramic tile. When the ceramic tile is subsequently subjected to super-bright treatment, even if white accumulated wax is still left on the surface of the ceramic tile, the white accumulated wax can be easily removed through the nylon brush, and the position with the finest concave-convex textures is filled with the transparent anti-fouling wax liquid, and the appearance of the concave-convex textures cannot be influenced by the transparent characteristic of the wax liquid. The subsequently applied A wax only remains on the surface layer of the concave-convex texture, and can be easily removed only by slight brushing and sweeping.

Description

Technical Field

[0001] The invention relates to the technical field of surface treatment of building tiles, in particular to a surface treatment method of tiles with concave-convex textures. Background Art

[0002] In the field of building ceramics, super-clean and bright treatment is a process used to improve the surface performance of ceramic polished tiles. It mainly realizes anti-fouling, wear-resistant, antibacterial and other functions by forming a nano-level protective film on the tile surface. Specifically, super-clean and bright treatment mainly includes the following steps: first, clean the surface of the ceramic tile to ensure that the tile surface is free of dust and impurities; then, evenly apply A wax (mainly composed of silica sol) on the tile surface to fill the micropores and microcracks on the tile surface, and then use a polishing brush to polish the tile surface with A wax applied, so that A wax can better penetrate and evenly distribute on the tile surface; then, evenly apply B wax (composition generally includes any combination of methyl methacrylate, ammonium persulfate, Lewis acid, phosphorus oxychloride, bisphenol A, phenol, cuprous thiocyanate and para-aminodiphenylamine) on the tile surface, and then use a polishing brush to polish the tile surface with B wax applied, so that B wax can penetrate into the interior of A wax and form a dense protective layer together with A wax to achieve waterproof and anti-fouling effects.

[0003] When there are uneven textures on the surface of the ceramic tile, some wax A will remain in the sunken position of the uneven texture (white). To clean the white wax, a nylon brush with water is generally used for brushing and cleaning. In order to ensure that the nylon brush has a certain rigidity, its diameter is generally controlled at 0.3 to 0.5 mm.

[0004] To enhance the decorative richness of ceramic tiles, the concave and convex textures on existing ceramic tile surfaces are becoming increasingly refined. For example, finely carved textures can typically achieve line widths less than 0.3mm. When using a nylon brush with a diameter of 0.3-0.5mm to clean the white wax residue remaining in finely carved textures, the brush cannot reach the sunken textures less than 0.3mm wide. This makes it difficult to completely and thoroughly remove the white wax residue left by the super-clean and bright treatment, affecting the decorative effect of the ceramic tile surface. Summary of the Invention

[0005] The purpose of the present invention is to provide a surface treatment method for ceramic tiles with concave-convex textures, which can effectively improve the problem of wax accumulation remaining on the surface of ceramic tiles with concave-convex textures due to ultra-clean and bright treatment, so as to overcome the shortcomings of the prior art.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A method for treating the surface of a ceramic tile having a concave-convex texture comprises the following steps:

[0008] A. Apply transparent antifouling wax water evenly on the surface of the tile, and use a polishing brush to polish and apply it to obtain a transparent antifouling silicone oil coating;

[0009] B. Apply wax A evenly on the surface of the transparent antifouling silicone oil coating, and polish it with a polishing brush to obtain a nano-silicon layer;

[0010] C. Apply wax B evenly on the surface of the nano-silicon layer, and use a polishing brush to polish and brush to complete the tile surface treatment;

[0011] In step A, the raw materials of the transparent antifouling wax water include 100 parts of modified silicone oil, 1.0-3.5 parts of T-31 curing agent, 0.5-1.5 parts of KH550, 30-80 parts of xylene, 10-50 parts of ethyl acetate, 0-0.5 parts of organic tin catalyst and 0-0.5 parts of auxiliary agent, calculated by weight, and the modified silicone oil is methylphenyl silicone oil or hydrogenated silicone oil.

[0012] Preferably, in step A, the amount of the transparent antifouling wax applied is 20 to 100 g / m 2 .

[0013] Preferably, the organotin catalyst is dibutyltin dilaurate.

[0014] Preferably, the auxiliary agent is BYK-306 leveling agent.

[0015] Preferably, in step B, the wax A is silica sol, and the solid content of the wax A is 10-40%.

[0016] Preferably, in step C, the B wax is composed of 100 parts of methylphenyl silicone oil and 0.5 to 3.0 parts of KH550.

[0017] The technical solution provided by the present invention can have the following beneficial effects:

[0018] 1. The tile surface treatment method proposed in this proposal first applies a fast-curing, transparent, anti-fouling wax solution to the tile surface before applying the ultra-bright treatment. The wax solution accumulates and pre-fills the depressions in the uneven texture as the polishing brush rotates, forming a transparent, anti-fouling silicone oil coating on the tile surface. When the tile is subsequently ultra-brightened, even if any white wax residue remains on the surface, it can be easily removed with a nylon brush. This is because the finest areas of the uneven texture have already been filled with the transparent anti-fouling wax solution, and the transparency of the wax solution does not affect the appearance of the uneven texture. The subsequent application of A wax will only remain on the surface of the uneven texture and can be easily removed with a light brushing.

[0019] 2. In order to achieve the rapid curing of transparent antifouling wax and the transparent coating, this program also proposes a formula for transparent antifouling wax. Through the synergistic mechanism of T-31 curing agent and KH550, the reaction activity of the wax is enhanced, the reaction time is greatly shortened, and rapid curing is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a diagram showing the surface effect of the ceramic tile according to Example 1 of the present invention.

[0021] Figure 2 This is a surface effect diagram of a ceramic tile of a comparative example of the present invention. DETAILED DESCRIPTION

[0022] A method for treating the surface of a ceramic tile having a concave-convex texture comprises the following steps:

[0023] A. Apply transparent antifouling wax water evenly on the surface of the tile, and use a polishing brush to polish and apply it to obtain a transparent antifouling silicone oil coating;

[0024] B. Apply wax A evenly on the surface of the transparent antifouling silicone oil coating, and polish it with a polishing brush to obtain a nano-silicon layer;

[0025] C. Apply wax B evenly on the surface of the nano-silicon layer, and use a polishing brush to polish and brush to complete the tile surface treatment;

[0026] In step A, the raw materials of the transparent antifouling wax water include 100 parts of modified silicone oil, 1.0-3.5 parts of T-31 curing agent, 0.5-1.5 parts of KH550, 30-80 parts of xylene, 10-50 parts of ethyl acetate, 0-0.5 parts of organic tin catalyst and 0-0.5 parts of auxiliary agent, calculated by weight, and the modified silicone oil is methylphenyl silicone oil or hydrogenated silicone oil.

[0027] In order to improve the problem of residual wax on the surface of concave-convex textured ceramic tiles due to super-cleaning treatment, this solution proposes a ceramic tile surface treatment method. Before the super-cleaning treatment of the ceramic tile, a transparent anti-fouling wax water that can be quickly cured is first applied to the surface of the ceramic tile. The wax water will accumulate and pre-fill the sunken areas of the concave-convex texture under the rotation of the polishing brush, thereby forming a transparent anti-fouling silicone oil coating on the surface of the ceramic tile. When the ceramic tile is subsequently subjected to super-cleaning treatment, even if white wax still remains on the surface of the ceramic tile, it can be easily removed with a nylon brush. This is because the finest part of the concave-convex texture (i.e., the deep layer) has been filled with transparent anti-fouling wax water, and the transparent nature of the wax water will not affect the presentation of the concave-convex texture. The subsequently applied A wax will only remain on the surface of the concave-convex texture and can be easily removed with a light brush.

[0028] Furthermore, in order to achieve the rapid curing of transparent antifouling wax water and the transparent characteristics of the coating, the present technical solution also proposes a formula of the above-mentioned transparent antifouling wax water, which improves the reaction activity of the wax water through the synergistic action mechanism of T-31 curing agent (i.e., phenolic amine epoxy curing agent) and KH550 (i.e., 3-aminopropyltriethoxysilane), greatly shortens the reaction time, and achieves rapid curing.

[0029] Specifically, the molecules of the T-31 curing agent contain multiple active groups such as phenolic hydroxyl, primary amino and secondary amino groups. Among them, the hydrophilicity of the phenolic hydroxyl group and the high reactivity of the amino group enable it to react efficiently with modified silicone oil in a humid environment, avoiding incomplete curing due to moisture interference. In addition, the phenolic amine structure of the T-31 curing agent reduces the activation energy of the curing reaction, allowing the reaction to start at a lower temperature. The exothermic peak temperature during curing is about 30°C lower than that of traditional polyamide curing agents, thereby greatly shortening the reaction time and achieving rapid curing. KH550, as a silane coupling agent, contains amino and ethoxy groups, and the amino group can react with polar polymers. After hydrolysis, the ethoxy group can form a chemical bond with ceramics. Compared with KH560 and KH570, the amino group of KH550 is particularly suitable for improving the adhesion of ceramics in terms of polarity and reactivity. Under the catalysis of KH550's amino group, the Si-H bonds in the modified silicone oil react with water or airborne moisture to form silanols (Si-OH). These then condense with the silanols produced by KH550 hydrolysis to form a three-dimensional crosslinked network, effectively enhancing the material's water resistance and adhesion. Furthermore, the T-31 curing agent is insensitive to humidity, while KH550 forms a hydrophobic silanol layer upon hydrolysis. These two factors synergistically improve the coating's curing stability in the humid environment of tile polishing lines, thereby suppressing moisture interference.

[0030] In addition, methylphenyl silicone oil and hydrogen silicone oil are both modified silicone oils with excellent anti-fouling, water-proof and oil-proof properties; xylene and ethyl acetate are both solvents in the formula, and the volatilization temperature of ethyl acetate is higher than that of xylene. It forms a mixed solvent with xylene, which can effectively balance the volatilization gradient of the formula and avoid pinhole defects in the coating caused by concentrated volatilization of the solvent; the organic tin catalyst can effectively activate the silicon atoms in KH550 through coordination, accelerate its hydrolysis to generate silanols (Si-OH), and then catalyze the condensation reaction between silanols to form a three-dimensional cross-linked network structure.

[0031] Further explanation, in step A, the amount of the transparent antifouling wax water applied is 20 to 100 g / m 2 .

[0032] In a preferred embodiment of the present technical solution, the present solution also limits the amount of transparent antifouling wax water applied, so as to take into account both the residual wax removal effect and the production cost.

[0033] It is further described that the organic tin catalyst is dibutyltin dilaurate.

[0034] It is further explained that the auxiliary agent is BYK-306 leveling agent.

[0035] To further illustrate, in step B, the wax A is silica sol, and the solid content of the wax A is 10-40%.

[0036] To further illustrate, in step C, the B wax is composed of 100 parts of methylphenyl silicone oil and 0.5 to 3.0 parts of KH550.

[0037] The technical solution of the present invention is further illustrated below through specific implementation methods.

[0038] Example 1

[0039] A. Apply transparent antifouling wax water evenly on the surface of the tile, and use a polishing brush to polish and apply it to obtain a transparent antifouling silicone oil coating;

[0040] B. Apply wax A evenly on the surface of the transparent antifouling silicone oil coating, and polish it with a polishing brush to obtain a nano-silicon layer;

[0041] C. Apply wax B evenly on the surface of the nano silicon layer, and use a polishing brush to polish and brush it to complete the tile surface treatment. The tile surface effect is as shown in the figure below. Figure 1 As shown, the white wax accumulation in the sunken areas of the line texture on the tile surface is significantly improved.

[0042] In step A, the raw materials of transparent antifouling wax water include 100 parts of methylphenyl silicone oil, 1.0 parts of T-31 curing agent, 0.5 parts of KH550, 30 parts of xylene, 50 parts of ethyl acetate, 0.2 parts of dibutyltin dilaurate and 0.3 parts of BYK-306 leveling agent, calculated by weight. The application amount of transparent antifouling wax water is 20g / m 2 .

[0043] In step B, wax A is a silica sol with a solid content of 40%.

[0044] In step C, B wax is composed of 100 parts of methylphenyl silicone oil and 0.8 parts of KH550.

[0045] Example 2

[0046] A. Apply transparent antifouling wax water evenly on the surface of the tile, and use a polishing brush to polish and apply it to obtain a transparent antifouling silicone oil coating;

[0047] B. Apply wax A evenly on the surface of the transparent antifouling silicone oil coating, and polish it with a polishing brush to obtain a nano-silicon layer;

[0048] C. Apply B wax evenly on the surface of the nano silicon layer, and use a polishing brush to polish and brush it to complete the tile surface treatment.

[0049] In step A, the raw materials of transparent antifouling wax water include 100 parts of methylphenyl silicone oil, 3.5 parts of T-31 curing agent, 1.5 parts of KH550, 70 parts of xylene, 10 parts of ethyl acetate, 0.2 parts of dibutyltin dilaurate and 0.3 parts of BYK-306 leveling agent, calculated by weight. The amount of transparent antifouling wax water applied is 100g / m 2 .

[0050] In step B, wax A is a silica sol with a solid content of 40%.

[0051] In step C, B wax is composed of 100 parts of methylphenyl silicone oil and 0.8 parts of KH550.

[0052] Example 3

[0053] A. Apply transparent antifouling wax water evenly on the surface of the tile, and use a polishing brush to polish and apply it to obtain a transparent antifouling silicone oil coating;

[0054] B. Apply wax A evenly on the surface of the transparent antifouling silicone oil coating, and polish it with a polishing brush to obtain a nano-silicon layer;

[0055] C. Apply B wax evenly on the surface of the nano silicon layer, and use a polishing brush to polish and brush it to complete the tile surface treatment.

[0056] In step A, the raw materials of transparent antifouling wax water include 100 parts of hydrogenated silicone oil, 2.5 parts of T-31 curing agent, 1.5 parts of KH550, 40 parts of xylene, 40 parts of ethyl acetate, 0.2 parts of dibutyltin dilaurate and 0.3 parts of BYK-306 leveling agent, calculated by weight. The amount of transparent antifouling wax water applied is 50g / m 2 .

[0057] In step B, wax A is a silica sol with a solid content of 40%.

[0058] In step C, B wax is composed of 100 parts of methylphenyl silicone oil and 0.8 parts of KH550.

[0059] Comparative Example

[0060] a. Apply wax A evenly on the surface of the tile, and polish it with a polishing brush to obtain a nano-silicon layer;

[0061] b. Apply B wax evenly on the surface of the nano silicon layer, and use a polishing brush to polish and brush it to complete the tile surface treatment. The tile surface effect is as shown in the figure below. Figure 2 As shown, there is obvious white wax accumulation in the sunken areas of the line texture on the surface of the tile.

[0062] In step B, wax A is a silica sol with a solid content of 40%.

[0063] In step C, B wax is composed of 100 parts of methylphenyl silicone oil and 0.8 parts of KH550.

[0064] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. A method for treating the surface of a tile having a concave-convex texture, characterized in that: The following steps are involved: A. Apply transparent antifouling wax water evenly on the surface of the tile, and use a polishing brush to polish and apply it to obtain a transparent antifouling silicone oil coating; B. Apply wax A evenly on the surface of the transparent antifouling silicone oil coating, and polish it with a polishing brush to obtain a nano-silicon layer; C. Apply wax B evenly on the surface of the nano-silicon layer, and use a polishing brush to polish and brush to complete the tile surface treatment; In step A, the raw materials of the transparent antifouling wax water include 100 parts of modified silicone oil, 1.0-3.5 parts of T-31 curing agent, 0.5-1.5 parts of KH550, 30-80 parts of xylene, 10-50 parts of ethyl acetate, 0-0.5 parts of organic tin catalyst and 0-0.5 parts of auxiliary agent, calculated by weight, and the modified silicone oil is methylphenyl silicone oil or hydrogenated silicone oil.

2. The method for treating the surface of a ceramic tile having a concave-convex texture according to claim 1, characterized in that: In step A, the amount of the transparent antifouling wax water applied is 20 to 100 g / m 2 .

3. The method for treating the surface of a ceramic tile having a concave-convex texture according to claim 1, characterized in that: The organic tin catalyst is dibutyltin dilaurate.

4. The method for treating the surface of a ceramic tile having a concave-convex texture according to claim 1, characterized in that: The auxiliary agent is BYK-306 leveling agent.

5. The method for treating the surface of a ceramic tile having a concave-convex texture according to claim 1, characterized in that: In step B, the wax A is silica sol, and the solid content of the wax A is 10-40%.

6. The method for treating the surface of a ceramic tile having a concave-convex texture according to claim 1, characterized in that: In step C, the B wax is composed of 100 parts of methylphenyl silicone oil and 0.5 to 3.0 parts of KH550.

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