Soft throwing brick antifouling material and use method thereof

Abstract

The invention relates to the technical field of ceramic cold working, in particular to a soft throwing brick antifouling material and a using method thereof.The soft throwing brick antifouling material comprises modified high-modulus potassium silicate, nanoparticle dispersion liquid and a matting material; the mass ratio of the modified high-modulus potassium silicate to the nanoparticle dispersion liquid to the extinction material is (6-8): (1-3): (0.2-0.6); the modified high-modulus potassium silicate is obtained by modifying a silane coupling agent or organic silicon; the nano particle dispersion liquid comprises nano rod-like zinc oxide, an additive and water; wherein the mass ratio of the nanorod-like zinc oxide to the additive to the water is (20-30): (1-3): (50-60); the matting material is one or more of fumed silica and organic polymethylurea resin nanoscale microspheres, and the problems that an existing soft throwing brick is poor in antifouling performance and insufficient in antifouling durability and soft light effect are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ceramic cold processing, in particular to a soft polishing brick antifouling material and a use method thereof. BACKGROUND

[0002] Generally, the microstructure of the surface of the ceramic tile is polished, and there are many open pores on the glaze surface. The diameters of the open pores are distributed between several microns and tens of microns, and there are also many microscale "gullies" with different depths, sizes and shapes. These surface defects are the fundamental cause of dirt accumulation in daily life of the ceramic tile.

[0003] The existing soft polishing brick antifouling treatment technology cannot use silica sol and organic silicon oil antifouling wax like full polishing glaze brick because of the requirement of soft light on the surface of the soft polishing brick. The gloss of the silica sol is significantly improved after polishing treatment, and the gloss is as high as 90 degrees. Therefore, only oily antifouling wax similar to organic silicon oil is generally used for surface treatment. However, the antifouling and waterproof effects of the silicon oil antifouling material will gradually decrease after wax removal or long-term friction cleaning, resulting in poor antifouling ability of the glaze surface of the ceramic tile. SUMMARY

[0004] In view of the above defects, the present application aims to provide a soft polishing brick antifouling material to solve the problems of poor antifouling performance, poor durability and insufficient soft light effect of the current soft polishing brick.

[0005] The second object of the present application is to provide a use method of the soft polishing brick antifouling material to ensure that the soft polishing brick antifouling material can well act on the surface of the soft polishing brick, and ensure that the antifouling effect, soft light effect and antifouling durability meet the requirements.

[0006] To achieve this object, the present application adopts the following technical solutions: A soft polishing brick antifouling material, comprising modified high modulus potassium silicate, nano-particle dispersion liquid and matt material; The mass ratio of the modified high modulus potassium silicate, the nano-particle dispersion liquid and the matt material is (6-8):(1-3):(0.2-0.6); The modified high modulus potassium silicate is modified by a silane coupling agent or an organic silicon, and the molar ratio n of SiO2 to K2O in the modified high modulus potassium silicate is 5.7-5.9; The nano-particle dispersion liquid comprises nanorod-shaped zinc oxide, an additive and water, and the mass ratio of the nanorod-shaped zinc oxide, the additive and the water is (20-30):(1-3):(50-60); The extinction material is one or more of fumed silica and organic polymethyl urea resin nanoscale microspheres, wherein when the fumed silica and the organic polymethyl urea resin nanoscale microspheres are contained simultaneously, the fumed silica needs to be added first and then the organic polymethyl urea resin nanoscale microspheres.

[0007] Preferably, the modified high modulus potassium silicate has a pH value of 10-12 and a solid content of 15-20%.

[0008] Preferably, the nanorod-shaped zinc oxide has a particle size of no more than 20 nm and a particle size diameter of 120-180 nm in a dispersed state.

[0009] Preferably, the additive includes a dispersant, a defoaming agent, a film-forming aid, and a coupling agent. The dispersant is an anionic surfactant, the defoaming agent is a silicone-based defoaming agent, and the film-forming aid has a viscosity of 3-7 mPa·s.

[0010] Preferably, the surface layer anti-fouling material further includes silicone and silane-based materials and a catalyst, and the mass ratio of the silicone and silane-based materials to the catalyst is 100: (0.5-1.5).

[0011] Preferably, the silicone and silane-based materials are one or more mixed oligomers of methylsiloxane, methyltriethoxysilane, and triacetoxy silane, and the silicone and silane-based materials have a solid content of 38-42%. The catalyst is dibutyltin dilaurate.

[0012] A use method of the soft polishing brick anti-fouling material, including the following steps: S1, polishing the ceramic tile to a glossiness of 18-25° and keeping the tile surface dry; S2, mixing the modified high modulus potassium silicate, the nanoscale particle dispersion liquid, and the extinction material in a formula amount to obtain the soft polishing brick anti-fouling material; S3, using a waxing machine and a fiber soft pad to coat the soft polishing brick anti-fouling material on the surface of the ceramic tile and drying.

[0013] A use method of the soft polishing brick anti-fouling material, including the following steps: S1, polishing the ceramic tile to a glossiness of 18-25° and keeping the tile surface dry; S2, mixing the modified high modulus potassium silicate, the nanoscale particle dispersion liquid, and the extinction material in a formula amount to obtain the soft polishing brick anti-fouling material; S3, using a waxing machine and a fiber soft pad to coat the soft polishing brick anti-fouling material on the surface of the ceramic tile and drying. S4, after the bottom layer of the antifouling material is dried, a waxing machine is used and a sponge soft pad is used to coat the surface layer of the antifouling material.

[0014] Preferably, in step S3, the revolution speed of the grinding disc of the waxing machine is 100-120 r / min, the rotation speed of the abrasive material installed on the grinding disc is 1200-1400 r / min, and the grinding head pressure is 5-8 kg.

[0015] The technical solution provided by the present application can include the following beneficial effects: The technical solution adds the modified high modulus potassium silicate, the nano rod-shaped zinc oxide particle dispersion liquid and the matt material in the corresponding mass ratio, the nano rod-shaped zinc oxide is compounded with the matt material, the extinction effect is improved while the high filling rate is ensured, the modified high modulus potassium silicate is obtained by modification of a silane coupling agent or silicone, has good chemical stability and adhesion, the modified high modulus potassium silicate is compounded with the nano rod-shaped zinc oxide particle dispersion liquid, is well combined on the brick surface and is not easy to fall off, and the antifouling durability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the SEM diagram of the soft-brushed brick without antifouling material treatment.

[0017] Figure 2 is the SEM diagram of the soft-brushed brick after antifouling treatment in example 1 of the present application. DETAILED DESCRIPTION

[0018] The technical solution of the present application will be further described below through specific embodiments.

[0019] In order to facilitate understanding of the present application, the present application will be described more fully below. The present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0020] Unless specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or according to the product instructions are used. Unless the manufacturer is specified, all reagents or instruments used are conventional products that can be obtained on the market.

[0021] An antifouling material for soft-brushed brick, comprising modified high modulus potassium silicate, nano particle dispersion liquid and matt material; The mass ratio of the modified high modulus potassium silicate, the nano particle dispersion liquid and the matt material is (6-8):(1-3):(0.2-0.6); The modified high modulus potassium silicate is obtained by modification of a silane coupling agent or silicone, and the molar ratio n of SiO2 to K2O in the modified high modulus potassium silicate is 5.7-5.9; The nanoparticle dispersion liquid comprises nanorod-shaped zinc oxide, an additive, and water; wherein the mass ratio of the nanorod-shaped zinc oxide, the additive, and the water is (20-30):(1-3):(50-60); The extinction material is one or more of fumed silica and organic polymethylurea resin nanoscale microspheres, wherein when the fumed silica and the organic polymethylurea resin nanoscale microspheres are contained simultaneously, the fumed silica needs to be added first and then the organic polymethylurea resin nanoscale microspheres.

[0022] In order to solve the problems in the prior art, the present application provides a soft polishing brick antifouling material, which comprises modified high modulus potassium silicate, nanoparticle dispersion liquid and extinction material, and is used as a bottom antifouling material in specific applications. The existing antifouling material generally uses silica sol to combine with the ceramic tile base material, but the silica sol needs a large pressure to generate a large friction force to polish and fill the hole, generally needs a pressure of 1-3 MPa to ensure uniform coating, which will cause a certain wear to the tile surface, and the gloss of the tile surface will increase after polishing under a large pressure. The modified high modulus potassium silicate used in the present application is obtained by modifying the silane coupling agent and the organic silicon. The modified high modulus potassium silicate has excellent weather resistance, enhanced adhesion, fast film formation, and resistance to scrubbing performance, and does not need to polish and fill the hole with a large pressure like silica sol. The adhesion of the modified high modulus potassium silicate is improved and is not easy to be removed, has more durable antifouling effect and chemical stability, and the durability is improved. At the same time, the modified high modulus potassium silicate has less free K2O (alkaline component) and higher silicate polymerization degree, the silicate network formed is dense, the acid corrosion path is prolonged, and the chemical stability is better, further improving the antifouling durability. At the same time, the nanometer particles in the nanoparticle dispersion liquid used in the present application are nanorod-shaped zinc oxide. In order to ensure the antifouling performance, the open pores and micro-sized gullies need to be filled to ensure the antifouling effect. The nanorod-shaped zinc oxide can effectively fill these surface defects. At the same time, the rod-shaped zinc oxide nanoparticles will cause Mie scattering to visible light and ultraviolet light. In the randomly oriented rod-shaped zinc oxide aggregate, the longer rod will increase the number of times of light scattering in the material. Therefore, the rod-shaped zinc oxide nanoparticles have a certain extinction effect. At the same time, the composite extinction material only has a single extinction effect. Although it has a good extinction effect when applied to the coating, the extinction effect is limited when applied to the polishing antifouling process filling material. Therefore, the use of nanorod-shaped zinc oxide and extinction material can better balance the two contradictory bodies of high hole filling and low gloss. Therefore, the antifouling material proposed in the present application comprises modified high modulus potassium silicate, nanorod-shaped zinc oxide dispersion liquid and extinction material. The nanorod-shaped zinc oxide fills the surface defects to ensure the antifouling effect, and is compounded with the extinction material to achieve low gloss. The nanorod-shaped zinc oxide is compounded with the modified high modulus potassium silicate to better fill the surface defects of the tile surface, so that the antifouling material can be well attached to the tile surface, and does not need to use a large pressure to polish and fill the hole, further ensuring the soft light effect, so that the gloss of the soft polishing brick treated by the antifouling material is not higher than 45°, and the durability of the antifouling performance is improved, so that the antifouling material is not easy to fall off on the tile surface, solving the problems of poor antifouling performance, insufficient durability and soft light effect of the current soft polishing brick. In addition, the nanorod-shaped zinc oxide also has a certain antibacterial effect, which can inhibit the growth and reproduction of bacteria on the tile surface.

[0023] The mass ratio of the modified high modulus potassium silicate, the nano-particle dispersion liquid and the light extinction material is (6-8):(1-3):(0.2-0.6). In this ratio, the overall consistency of the anti-fouling material is moderate, the probability of wax burning is effectively reduced, and the light extinction effect is good. It is worth noting that the wax burning phenomenon refers to the problem that the surface anti-fouling layer of the ceramic tile appears abnormal damage, discoloration, cracking or "burning" marks during the anti-fouling process due to improper use of the anti-fouling material or environmental factors, and the essence is that the stability of the anti-fouling material is destroyed.

[0024] Specifically, the modified high modulus potassium silicate can be purchased from Anhui Silicon Baoxiangfei Organic Silicon New Material Co., Ltd., Linyi Zhixuan New Material Co., Ltd. or Anhui Cermar New Material Technology Co., Ltd.

[0025] Specifically, the molar ratio n of SiO2 to K2O is the modulus, and the modulus of the modified high modulus potassium silicate ranges from 5.7 to 5.9. Within this modulus range, the chemical stability and acid resistance can be effectively improved, and the process is not too complex and is relatively stable and not prone to gelation.

[0026] Specifically, under this mass ratio, the nano-particle dispersion liquid has stable dispersion. If there are too many nano-rod-shaped zinc oxide particles, agglomeration is likely to occur, and if there are too few, the hole filling and light extinction effects cannot be achieved. Under this mass ratio, the nano-particle dispersion liquid can better play the role of hole filling and light extinction.

[0027] Specifically, the light extinction material can be inorganic light extinction powder, i.e. fumed silica such as De Gussa OK520, or organic light extinction powder, i.e. organic polymethyl urea resin nanoscale microspheres such as Clariant PERGOPAK® series, which have a porous spherical shape, a honeycomb-like porous structure inside, a pore size of 0.1-0.5 μm and a high specific surface area, and high light extinction efficiency.

[0028] It is worth noting that the light extinction material is one or more of fumed silica and organic polymethyl urea resin nanoscale microspheres. The light extinction effect of fumed silica alone is better than that of organic polymethyl urea resin nanoscale microspheres alone, but the refractive index of organic polymethyl urea resin nanoscale microspheres is higher, which can not only extinguish light but also improve transparency and water resistance. When both are used together, fumed silica is added first and then organic polymethyl urea resin nanoscale microspheres are added to prevent flocculation.

[0029] Further, the pH value of the modified high modulus potassium silicate is 10-12, and the solid content is 15-20%.

[0030] Preferably, the particle size of the nano-rod-shaped zinc oxide is not greater than 20 nm, and the particle size diameter in the dispersed state is 120-180 nm.

[0031] Specifically, the light scattering effect of the nanorod-shaped zinc oxide particles is utilized to increase the number of times of light scattering inside the material, so that the nanoparticles not only have the function of filling the glaze pores, but also have the function of light extinction. The particle size of the nanorod-shaped zinc oxide is not greater than 20 nm, and the dispersed particle size diameter is concentrated in 120-180 nm, which ensures the scattering effect of the nanorod-shaped zinc oxide particles on visible light and plays a corresponding light extinction effect.

[0032] Preferably, the additive includes a dispersant, a defoaming agent, a film-forming aid, and a coupling agent. The dispersant is an anionic surfactant, the defoaming agent is a silicone-based defoaming agent, and the viscosity of the film-forming aid is 3-7 mPa·s.

[0033] The additive includes a dispersant, a defoaming agent, a film-forming aid, and a coupling agent. An anionic surfactant is used to achieve dispersion by forming a negative charge repulsion on the surface of the nanorod-shaped zinc oxide particles, ensuring that the particle size diameter of the nanorod-shaped zinc oxide in the dispersed state is 120-180 nm, such as sodium dodecyl benzene sulfonate (SDBS) and sodium naphthalene sulfonate formaldehyde condensate (NNO). A silicone-based defoaming agent can achieve a small dosage and a large defoaming effect, ensuring that the underlying anti-fouling material can fill and compact the surface defects of the brick, and ensuring good anti-fouling effect. The use of a coupling agent can activate the binding force between the nanorod-shaped zinc oxide particles and the modified high-modulus potassium silicate, improving the flexibility of the underlying anti-fouling material. The coupling agent can be KH550 or KH370. At the same time, the film-forming aid is limited to low viscosity, mainly to prevent the increase in the viscosity of the underlying anti-fouling material, and to prevent the phenomenon of wax burning. The nanometer particle dispersion liquid is compounded with the modified high-modulus potassium silicate to facilitate film formation. The use of the above additives can ensure that the underlying anti-fouling material can better fill the glaze pores and other defects, while ensuring good light extinction and anti-fouling effect.

[0034] Preferably, it also includes a surface layer anti-fouling material, which includes silicone and silane-based materials and a catalyst, and the mass ratio of the silicone and silane-based materials to the catalyst is 100: (0.5-1.5).

[0035] Specifically, the surface layer anti-fouling material includes silicone and silane-based materials and a catalyst. The silicone and silane-based materials have hydrolyzable groups, which form a Si-O-Si three-dimensional network under the action of the catalyst. The silicone and silane-based materials themselves have a solid content component, which is supplemented twice to further ensure the anti-fouling effect. The mass ratio of the silicone and silane-based materials to the catalyst is 100: (0.5-1.5), which ensures a moderate curing speed and prevents the phenomenon of wax burning.

[0036] Preferably, the siloxane and silane material is one or more mixed oligomers of methylsiloxane, methyltriethoxysilane and triacetoxy silane, and the solid content of the siloxane and silane material is 38-42%; The catalyst is dibutyl tin dilaurate.

[0037] Specifically, the solid content of the siloxane and silane material is 38-42%, which ensures that the top layer of the anti-fouling material is effectively formed, the viscosity is moderate, the effective ingredient is moderate, and the wax burning phenomenon is prevented.

[0038] Moreover, the catalyst is dibutyl tin dilaurate, which is a fast-drying tin catalyst and has weak toxicity. It catalyzes cross-linking and curing, promotes the hydrolysis of the hydrolyzable groups of the siloxane oligomer, and condenses to form a three-dimensional Si-O-Si network. At the same time, the surface drying time is significantly shortened from several hours to tens of minutes, improving efficiency and enabling the regulation of reaction depth and control of cross-linking density, thereby ensuring that the final top layer of the anti-fouling material has good hardness, flexibility and adhesion.

[0039] A method for using a soft polishing brick anti-fouling material, comprising the following steps: S1, polishing the ceramic tile to a glossiness of 18-25°, and keeping the tile surface dry; S2, mixing the modified high modulus potassium silicate, the nano particle dispersion liquid and the matt material in a formula amount to obtain the soft polishing brick anti-fouling material; S3, using a waxing machine and a fiber soft pad to coat the soft polishing brick anti-fouling material on the surface of the ceramic tile, and drying.

[0040] Specifically, under the premise of ensuring the anti-fouling effect, the soft polishing brick anti-fouling material is coated using a fiber soft pad with a hardness of 4P, which can not only fill the glaze defects but also effectively avoid light reflection, has good soft light effect, and improves the anti-fouling durability.

[0041] The temperature of the tile body is between 40-70℃, which ensures that the soft polishing brick anti-fouling material has been dried.

[0042] A method for using a soft polishing brick anti-fouling material, comprising the following steps: S1, polishing the ceramic tile to a glossiness of 18-25°, and keeping the tile surface dry; S2, mixing the modified high modulus potassium silicate, the nano particle dispersion liquid and the matt material in a formula amount to obtain the soft polishing brick anti-fouling material; S3, using a waxing machine and a fiber soft pad to coat the soft polishing brick anti-fouling material on the surface of the ceramic tile, and drying. S4, after the bottom layer of the anti-fouling material is dried, using a waxing machine and a sponge soft pad to coat the top layer of the anti-fouling material.

[0043] Specifically, the surface layer of the anti-fouling material is made of sponge soft pad, because the bottom layer of the anti-fouling material has filled most of the surface defects of the brick surface, so it is no longer necessary to have excessive pressure and filling amount, and the sponge soft pad is used to ensure uniform coating and the flatness of the brick surface. In step S3, in order to avoid gloss, the pressure is not large, and some incomplete filling defects of the glaze surface may exist, and the second layer of the surface layer of the anti-fouling material itself also has a solid content component, which can be used for secondary supplementary filling to ensure the anti-fouling effect. Through the above steps, good filling is achieved under relatively small pressure, the glossiness is not greatly increased, and the anti-fouling material is attached to the brick surface to improve the durability of the anti-fouling material, thereby solving the problems of poor anti-fouling performance, insufficient durability and soft light effect of the soft polishing brick.

[0044] Specifically, in step S4, after the bottom layer of the anti-fouling material is applied, the temperature of the brick body is between 40-70℃, which ensures that the bottom layer of the anti-fouling material has dried.

[0045] Preferably, in step S4, when the surface layer of the anti-fouling material is coated, the revolution speed of the grinding disc of the waxing machine is 100-120r / min, the rotation speed of the abrasive material installed on the grinding disc is 1200-1400r / min, and the grinding head pressure is 5-8kg.

[0046] Preferably, in step S3, the revolution speed of the grinding disc of the waxing machine is 100-120r / min, the rotation speed of the abrasive material installed on the grinding disc is 1200-1400r / min, and the grinding head pressure is 5-8kg.

[0047] Specifically, the grinding head pressure is limited to 5-8kg, which is significantly smaller than the pressure required by the silica sol, and can effectively prevent gloss while ensuring that the bottom layer of the anti-fouling material is well attached to the brick surface.

[0048] The technical solutions of the present application will be further described through specific embodiments.

[0049] Embodiment group Embodiment 1 S1, polish the ceramic tile to a glossiness of 25°, and keep the tile surface dry; at this time, the tile surface is as shown in Figure 1 ; S2, mix modified high modulus potassium silicate, nano particle dispersion liquid and organic polymethyl urea resin nanoscale microspheres to obtain a bottom layer of anti-fouling material, and the mass ratio of the modified high modulus potassium silicate, nano particle dispersion liquid and organic polymethyl urea resin nanoscale microspheres is 8:2:0.4; wherein the nano particle dispersion liquid comprises nano rod-shaped zinc oxide, additives and water; the mass ratio of the nano rod-shaped zinc oxide, additives and water is 25:2:55; the particle size diameter of the nano rod-shaped zinc oxide in the dispersion state is 150±30nm; The molar ratio n of SiO2 to K2O in the modified high modulus potassium silicate is 5.8; the pH value is 11, and the solid content is 18%; The silicone and silane material and dibutyltin dilaurate are mixed to obtain the surface layer antifouling material, and the mass ratio of the silicone and silane material to dibutyltin dilaurate is 100:0.5; S3, using a waxing machine, setting the revolution speed of the grinding disc of the waxing machine to 110 r / min, the rotation speed of the abrasive installed on the grinding disc to 1300 r / min, and the pressure of the grinding head to 7 kg, and using a fiber soft pad to coat the bottom layer antifouling material on the surface of the ceramic tile; S4, after the bottom layer antifouling material is dried, using a waxing machine and using a sponge soft pad to coat the surface layer antifouling material, at this time the tile surface is as shown in the figure. Figure 2

[0050] Example 2 S1, polishing the ceramic tile to a glossiness of 25°, and keeping the tile surface dry; S2, mixing the modified high modulus potassium silicate, the nano particle dispersion liquid and the organic polymethylurea resin nanoscale microspheres to obtain the bottom layer antifouling material, and the mass ratio of the modified high modulus potassium silicate, the nano particle dispersion liquid and the organic polymethylurea resin nanoscale microspheres is 6:1:0.2; The nano particle dispersion liquid comprises nanorod-shaped zinc oxide, an additive and water, and the mass ratio of the nanorod-shaped zinc oxide, the additive and water is 25:2:55; the particle size diameter of the nanorod-shaped zinc oxide in the dispersion state is 150±30 nm; The molar ratio n of SiO2 to K2O in the modified high modulus potassium silicate is 5.8; the pH value is 11, and the solid content is 18%; The silicone and silane material and dibutyltin dilaurate are mixed to obtain the surface layer antifouling material, and the mass ratio of the silicone and silane material to dibutyltin dilaurate is 100:1; S3, using a waxing machine, setting the revolution speed of the grinding disc of the waxing machine to 110 r / min, the rotation speed of the abrasive installed on the grinding disc to 1300 r / min, and the pressure of the grinding head to 7 kg, and using a fiber soft pad to coat the bottom layer antifouling material on the surface of the ceramic tile; S4, after the bottom layer antifouling material is dried, using a waxing machine and using a sponge soft pad to coat the surface layer antifouling material.

[0051] Example 3 S1, polishing the ceramic tile to a glossiness of 25°, and keeping the tile surface dry; ​S2, mixing the modified high modulus potassium silicate, the nano-particle dispersion liquid and the organic polymethyl urea resin nanoscale microspheres to obtain the bottom antifouling material, the mass ratio of the modified high modulus potassium silicate, the nano-particle dispersion liquid and the organic polymethyl urea resin nanoscale microspheres is 7:3:0.6; The nano-particle dispersion liquid comprises nanorod-shaped zinc oxide, an additive and water, the mass ratio of the nanorod-shaped zinc oxide, the additive and water is 25:2:55, and the particle size of the nanorod-shaped zinc oxide in the dispersion state is 150±30nm in diameter. The molar ratio n of SiO2 to K2O in the modified high modulus potassium silicate is 5.8, the pH value is 11, and the solid content is 18%. The silicone and silane material and dibutyltin dilaurate are mixed to obtain the surface antifouling material, the mass ratio of the silicone and silane material to dibutyltin dilaurate is 100:1.5. S3, using a waxing machine, setting the revolution speed of the grinding disc of the waxing machine to 110r / min, setting the rotation speed of the abrasive installed on the grinding disc to 1300r / min, setting the pressure of the grinding head to 7kg, and using a fiber soft pad to coat the bottom antifouling material on the surface of the ceramic tile. S4, after the bottom antifouling material is dried, using a waxing machine and using a sponge soft pad to coat the surface antifouling material.

[0052] Example 4 S1, polishing the ceramic tile to a glossiness of 25°, and keeping the tile surface dry; S2, mixing the modified high modulus potassium silicate, the nano-particle dispersion liquid and the organic polymethyl urea resin nanoscale microspheres to obtain the soft polishing tile antifouling material, the mass ratio of the modified high modulus potassium silicate, the nano-particle dispersion liquid and the organic polymethyl urea resin nanoscale microspheres is 8:2:0.4; The nano-particle dispersion liquid comprises nanorod-shaped zinc oxide, an additive and water, the mass ratio of the nanorod-shaped zinc oxide, the additive and water is 25:2:55, and the particle size of the nanorod-shaped zinc oxide in the dispersion state is 150±30nm in diameter. The molar ratio n of SiO2 to K2O in the modified high modulus potassium silicate is 5.8, the pH value is 11, and the solid content is 18%. S3, using a waxing machine, setting the revolution speed of the grinding disc of the waxing machine to 110r / min, setting the rotation speed of the abrasive installed on the grinding disc to 1300r / min, setting the pressure of the grinding head to 7kg, and using a fiber soft pad to coat the bottom antifouling material on the surface of the ceramic tile.

[0053] Example 5 S1, polishing the ceramic tile to a glossiness of 25°, and keeping the tile surface dry; S2, mixing the modified high modulus potassium silicate, the nano-particle dispersion liquid, fumed silica and the organic polymethyl urea resin nanoscale microspheres to obtain the bottom antifouling material, the mass ratio of the modified high modulus potassium silicate, the nano-particle dispersion liquid and the organic polymethyl urea resin nanoscale microspheres is 8:2:0.4; wherein, the fumed silica is added first and then the organic polymethyl urea resin nanoscale microspheres are added; The nano-particle dispersion liquid comprises nanorod-shaped zinc oxide, an additive and water; the mass ratio of the nanorod-shaped zinc oxide, the additive and water is 25:2:55; the nanorod-shaped zinc oxide has a particle size diameter of 150±30 nm in a dispersed state; The molar ratio n of SiO2 to K2O in the modified high modulus potassium silicate is 5.8; the pH value is 11 and the solid content is 18%; Mixing the siloxane and silane material and dibutyltin dilaurate to obtain the surface antifouling material, the mass ratio of the siloxane and silane material to dibutyltin dilaurate is 100:0.5; S3, using a waxing machine, setting the revolution speed of the grinding disc of the waxing machine to 110 r / min, setting the rotation speed of the abrasive installed on the grinding disc to 1300 r / min, setting the pressure of the grinding head to 7 kg, and using a fiber soft pad to coat the bottom antifouling material on the surface of the ceramic tile; S4, after the bottom antifouling material is dried, using a waxing machine and using a sponge soft pad to coat the surface antifouling material.

[0054] Comparative group Comparative example 1 S1, polishing the ceramic tile to a glossiness of 25°, and keeping the tile surface dry; S2, mixing the high modulus potassium silicate, the nano-particle dispersion liquid and the organic polymethyl urea resin nanoscale microspheres to obtain the bottom antifouling material, the mass ratio of the high modulus potassium silicate, the nano-particle dispersion liquid and the organic polymethyl urea resin nanoscale microspheres is 8:2:0.4; wherein, the high modulus potassium silicate is not modified by silane coupling agent and silicone; the nano-particle dispersion liquid comprises nanorod-shaped zinc oxide, an additive and water; the mass ratio of the nanorod-shaped zinc oxide, the additive and water is 25:2:55; the nanorod-shaped zinc oxide has a particle size diameter of 150±30 nm in a dispersed state; The molar ratio n of SiO2 to K2O in the high modulus potassium silicate is 5.8; the pH value is 11 and the solid content is 18%; Mixing the siloxane and silane material and dibutyltin dilaurate to obtain the surface antifouling material, the mass ratio of the siloxane and silane material to dibutyltin dilaurate is 100:0.5; S3, using a waxing machine, setting the grinding disc revolution speed of the waxing machine to 110 r / min, the abrasive self-rotation speed installed on the grinding disc to 1300 r / min, the grinding head pressure to 7 kg, and using a fiber soft pad to coat the bottom layer antifouling material on the ceramic tile surface; S4, after the bottom layer antifouling material is dried, using a waxing machine and using a sponge soft pad to coat the surface layer antifouling material.

[0055] Comparative Example 2 S1, polishing the ceramic tile to a glossiness of 25°, and keeping the tile surface dry; S2, mixing modified high modulus potassium silicate, nano particle dispersion liquid and organic polymethylurea resin nanoscale microspheres to obtain a bottom layer antifouling material, the mass ratio of the modified high modulus potassium silicate, nano particle dispersion liquid and organic polymethylurea resin nanoscale microspheres being 8:2:0.4; The nano particle dispersion liquid comprises nanometer spherical zinc oxide, an additive and water; the mass ratio of the nanometer spherical zinc oxide, the additive and water being 25:2:55; the nanometer spherical zinc oxide has a particle size diameter of 150±30 nm in a dispersed state; The modified high modulus potassium silicate has a molar ratio n of SiO2 to K2O of 5.8; a pH value of 11, and a solid content of 18%; Mixing siloxane and silane materials and dibutyltin dilaurate to obtain a surface layer antifouling material, the mass ratio of the siloxane and silane materials to dibutyltin dilaurate being 100:0.5; S3, using a waxing machine, setting the grinding disc revolution speed of the waxing machine to 110 r / min, the abrasive self-rotation speed installed on the grinding disc to 1300 r / min, the grinding head pressure to 7 kg, and using a fiber soft pad to coat the bottom layer antifouling material on the ceramic tile surface; S4, after the bottom layer antifouling material is dried, using a waxing machine and using a sponge soft pad to coat the surface layer antifouling material.

[0056] Comparative Example 3 S1, polishing the ceramic tile to a glossiness of 25°, and keeping the tile surface dry; S2, mixing silica sol, nano particle dispersion liquid and organic polymethylurea resin nanoscale microspheres to obtain a bottom layer antifouling material, the mass ratio of the silica sol, nano particle dispersion liquid and organic polymethylurea resin nanoscale microspheres being 8:2:0.4; The nano particle dispersion liquid comprises nanometer rod-shaped zinc oxide, an additive and water; the mass ratio of the nanometer rod-shaped zinc oxide, the additive and water being 25:2:55; the nanometer rod-shaped zinc oxide has a particle size diameter of 150±30 nm in a dispersed state; The silicone and silane material and dibutyltin dilaurate are mixed to obtain the surface layer antifouling material, and the mass ratio of the silicone and silane material to dibutyltin dilaurate is 100:0.5; S3, using a waxing machine, setting the revolution speed of the grinding disc of the waxing machine to 110 r / min, the rotation speed of the abrasive installed on the grinding disc to 1300 r / min, the pressure of the grinding head to 7 kg, and using a fiber soft pad to coat the bottom layer antifouling material on the surface of the ceramic tile; S4, after the bottom layer antifouling material is dried, using a waxing machine and using a sponge soft pad to coat the surface layer antifouling material.

[0057] Comparative Example 4 S1, polishing the ceramic tile to a glossiness of 25°, and keeping the tile surface dry; S2, mixing the silica sol, the nano-particle dispersion liquid and the organic polymethylurea resin nano-sized microspheres to obtain the bottom layer antifouling material, and the mass ratio of the silica sol, the nano-particle dispersion liquid and the organic polymethylurea resin nano-sized microspheres is 8:2:0.4; The nano-particle dispersion liquid comprises nano-rod-shaped zinc oxide, an additive and water, and the mass ratio of the nano-rod-shaped zinc oxide, the additive and water is 25:2:55; the nano-rod-shaped zinc oxide has a particle size diameter of 150±30 nm in a dispersed state; The silicone and silane material and dibutyltin dilaurate are mixed to obtain the surface layer antifouling material, and the mass ratio of the silicone and silane material to dibutyltin dilaurate is 100:0.5; S3, using a waxing machine, setting the revolution speed of the grinding disc of the waxing machine to 110 r / min, the rotation speed of the abrasive installed on the grinding disc to 1300 r / min, the pressure of the grinding head to 7 kg, and using a fiber soft pad to coat the bottom layer antifouling material on the surface of the ceramic tile; S4, after the bottom layer antifouling material is dried, using a waxing machine and using a sponge soft pad to coat the surface layer antifouling material.

[0058] Comparative Example 5 S1, polishing the ceramic tile to a glossiness of 25°, and keeping the tile surface dry; S2, mixing the modified high-modulus potassium silicate, the nano-particle dispersion liquid and the organic polymethylurea resin nano-sized microspheres to obtain the bottom layer antifouling material, and the mass ratio of the modified high-modulus potassium silicate, the nano-particle dispersion liquid and the organic polymethylurea resin nano-sized microspheres is 8:2:0.4; The nano-particle dispersion liquid comprises nano-rod-shaped zinc oxide, an additive and water, and the mass ratio of the nano-rod-shaped zinc oxide, the additive and water is 25:2:55; the nano-rod-shaped zinc oxide has a particle size diameter of 150±30 nm in a dispersed state; The molar ratio n of SiO2 to K2O in the modified high modulus potassium silicate is 5.8; the pH value is 11, and the solid content is 18%; The surface layer antifouling material is a mixture of silicone oil and 120# solvent oil.

[0059] S3, using a waxing machine, setting the revolution speed of the grinding disc of the waxing machine to 110 r / min, the rotation speed of the abrasive installed on the grinding disc to 1300 r / min, the pressure of the grinding head to 7 kg, and using a fiber soft pad to coat the bottom layer antifouling material on the surface of the ceramic tile; S4, after the bottom layer antifouling material is dried, using a waxing machine and using a sponge soft pad to coat the surface layer antifouling material.

[0060] Comparative Example 6 Comparative Example 6 is different from Example 5 in that the fumed silica and the organic polymethylurea resin nanoscale microspheres are directly added for mixing without a sequence.

[0061] Comparative Example 7 Comparative Example 7 is different from Example 1 in that the molar ratio of the modified high modulus potassium silicate is 3.

[0062] Comparative Example 8 Comparative Example 8 is different from Example 1 in that the particle size diameter of the nanorod-shaped zinc oxide in the dispersed state is 90±30 nm.

[0063] Comparative Example 9 Comparative Example 9 is different from Example 1 in that the mass ratio of the nanorod-shaped zinc oxide, the additive and water in the nanoscale particle dispersion liquid is 50:2:55.

[0064] Comparative Example 10 Comparative Example 10 is different from Example 1 in that the mass ratio of the siloxane and silane type material to dibutyltin dilaurate is 20:1.

[0065] The tiles after the antifouling treatment in the above examples and comparative examples are tested for gloss and antifouling performance, and the surface is dewaxed using double fly powder, and the antifouling performance is tested again, the gloss of the tile surface is tested using a 60° gloss tester, and the antifouling performance grade is determined according to GB / T 3810.14-2016 “Ceramic Tiles-Determination of Resistance to Staining”, and the specific test results are shown in Table 1:

[0066] From the test results of Table 1, it can be seen that after the anti-fouling materials of Examples 1-5 are treated by the present scheme, the gloss can be maintained at not higher than 45°, and the minimum can reach 33°, and after the double fly ash treatment, the anti-fouling materials do not fall off in large quantities, and the anti-fouling performance is consistent before and after the double fly ash treatment, indicating that the anti-fouling materials can effectively fill the pores to ensure the anti-fouling performance while having high adhesion, and after the double fly ash treatment, the anti-fouling performance is still good, and the soft light effect is good. Among them, the use of the anti-fouling material without a surface layer in Example 4 has weaker anti-fouling performance than the anti-fouling performance of Examples 1-3 with a surface layer, but the anti-fouling performance before and after the double fly ash treatment is consistent, indicating that the single-layer anti-fouling material also has high adhesion, and increasing the use of the surface layer anti-fouling material can further improve the grade of the anti-fouling performance.

[0067] Comparative Example 1 uses high modulus potassium silicate that is not modified by silane coupling agent and organic silicon, and has poor adhesion, and after the double fly ash treatment, the anti-fouling performance is weakened.

[0068] Comparative Example 2 uses nanometer spherical zinc oxide, and has good anti-fouling performance and adhesion, but because spherical zinc oxide is used, the scattering effect on visible light and ultraviolet light is not as good as rod-shaped zinc oxide, and the gloss is higher than that of Example 1.

[0069] Comparative Examples 3 and 4 use silica sol instead of modified high modulus potassium silicate, Comparative Example 3 can ensure the soft light effect under the pressure defined in the present application, but cannot meet the size of the pressure required for silica sol to fill the glaze pore defects, and the anti-fouling performance is only 3-4 grade; while Comparative Example 4 uses a larger pressure to meet the needs of silica sol to fill the brick surface defects, but the soft light effect is not good, the gloss is as high as 93°, and cannot meet the soft light effect while having good adhesion and anti-fouling performance.

[0070] Comparative Example 5 uses a mixture of silicone oil and 120# solvent oil as the surface layer anti-fouling material compared to Example 1, but the anti-fouling performance is not as good as the effect of using the surface layer anti-fouling material of the present application, and the anti-fouling ability is weakened after the double fly ash treatment, and the adhesion is not as good as Example 1.

[0071] Comparative Example 6 uses fumed silica and organic polymethylurea resin nanoscale microspheres as extinction materials compared to Example 5, but Comparative Example 6 does not add fumed silica before adding polymethylurea resin microspheres, and the prepared anti-fouling material flocculates and cannot be coated.

[0072] Comparative Example 7 uses modified high modulus potassium silicate with a molar ratio not within the range of 5.7-5.9 compared to Example 1, has poor water resistance and is easily eroded by water, and has poor anti-fouling performance.

[0073] Compared with Example 1, the particle size diameter of the nanorod-shaped zinc oxide in the dispersion state is not in the range of 120-180 nm, the dispersion particle size is smaller, the scattering effect of visible light is weaker, the extinction effect is weakened, the glossiness can be below 45°, but the overall glossiness is slightly higher than that of Example 1, and the antifouling performance is partially weakened, but the antifouling performance before and after the double fly powder treatment is consistent, which shows that the adhesion is good.

[0074] Compared with Example 1, too much nanorod-shaped zinc oxide is used in Comparative Example 9, which is easy to agglomerate and is not uniformly dispersed, the glossiness is not uniform, the maximum value and the minimum value of the glossiness differ by 20°, and a slight wax burning phenomenon occurs, the antifouling material layer is damaged, and the antifouling performance is weaker than that of Example 1, the antifouling performance is weakened after the double fly powder treatment, and the durability is poor.

[0075] Compared with Example 1, too much catalyst is used in the surface layer antifouling material in Comparative Example 10, which leads to rapid curing and a wax burning phenomenon, the surface layer antifouling material is damaged, the antifouling performance is weaker than that of Example 1, the antifouling performance is weakened after the double fly powder treatment, the glossiness is not uniform, and the glossiness can be less than 45°, but the maximum value and the minimum value of the glossiness differ by 40°.

[0076] In summary, the soft-brick antifouling material and the use method thereof can effectively ensure that the soft-brick has good antifouling performance and antifouling durability while ensuring the soft light effect.

[0077] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanations herein, those skilled in the art can conceive other specific embodiments of the present application without creative labor, and these embodiments will fall within the scope of protection of the present application.

Claims

1. A soft polished brick antifouling material, characterized by: Includes modified high modulus potassium silicate, nanoparticle dispersion and matting material; The mass ratio of the modified high modulus potassium silicate, nanoparticle dispersion and matting material is (6-8): (1-3): (0.2-0.6); The modified high modulus potassium silicate is obtained by modification with a silane coupling agent or organosilicon, and the molar ratio n of SiO2 to K2O in the modified high modulus potassium silicate is 5.7-5.9; The nanoparticle dispersion comprises nanorod-shaped zinc oxide, an additive and water; wherein the mass ratio of nanorod-shaped zinc oxide, the additive and water is (20-30): (1-3): (50-60); The matting material is one or more of fumed silica and organic polymethyl urea resin nano-scale microspheres. When fumed silica and organic polymethyl urea resin nano-scale microspheres are contained at the same time, fumed silica needs to be added first and then organic polymethyl urea resin nano-scale microspheres.

2. The soft polished brick antifouling material according to claim 1, characterized in that: The pH value of the modified high modulus potassium silicate is 10-12, and the solid content is 15-20%.

3. The soft polished brick antifouling material according to claim 1, characterized in that: The particle size of the nanorod-shaped zinc oxide is no more than 20 nm, and the particle diameter in a dispersed state is 120-180 nm.

4. The soft polished brick antifouling material according to claim 1, characterized in that: The additives include dispersants, defoamers, film-forming aids and coupling agents; The dispersant is an anionic surfactant, the defoaming agent is an organosilicon defoaming agent, and the viscosity of the film-forming aid is 3-7 mPa·s.

5. The anti-fouling material for soft polished tiles according to claim 1, characterized in that: It also includes a surface antifouling material, which includes silicone and silane materials and a catalyst. The mass ratio of the silicone and silane materials to the catalyst is 100: (0.5-1.5).

6. The antifouling material for soft polished tiles according to claim 5, characterized in that: The siloxane and silane materials are one or more mixed oligomers of methylsiloxane, methyltriethoxysilane and triacetoxysilane, and the solid content of the siloxane and silane materials is 38-42%; The catalyst is dibutyltin dilaurate.

7. The method for using the soft polishing tile antifouling material according to claim 1, characterized in that: The following steps are involved: S1. Polish the tiles to a glossiness of 18-25° and keep the tile surface dry; S2. Mixing the modified high modulus potassium silicate, nanoparticle dispersion and matting material in the formulated amount to obtain a soft polishing tile antifouling material; S3. Use a waxing machine and a fiber pad to apply the soft polished tile anti-fouling material to the surface of the tile and dry it.

8. The method for using the soft polishing tile antifouling material according to claim 5 or 6, characterized in that: The following steps are involved: S1. Polish the tiles to a glossiness of 18-25° and keep the tile surface dry; S2. Mixing the modified high modulus potassium silicate, nanoparticle dispersion, and matting material in a formulated amount to obtain a bottom antifouling material, and mixing the formulated amount of siloxane and silane-based material and catalyst to obtain a surface antifouling material; S3. Use a waxing machine and a fiber pad to apply the bottom anti-fouling material to the surface of the tile; S4. After the bottom antifouling material is dry, use a waxing machine and a sponge pad to apply the surface antifouling material.

9. The method for using the soft polishing tile antifouling material according to claim 7 or 8, characterized in that: In step S3, the revolution speed of the grinding disc of the waxing machine is 100-120 r / min, the rotation speed of the abrasive installed on the grinding disc is 1200-1400 r / min, and the grinding head pressure is 5-8 kg.

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