Grey tile with good waterproof performance and preparation method thereof

Abstract

The invention relates to the technical field of building materials, and particularly discloses grey tiles with good waterproof performance and a preparation method of the grey tiles. The grey tile with the good waterproof performance is prepared from PVC resin, ASA blending alloy granules, modified composite filler, polyethylene wax, a stabilizer and toner. The modified composite filler is prepared from the following raw materials: a composite inorganic filler, imidazole-4, 5-dicarboxylic acid and polyethyleneimine, and the mass ratio of the composite inorganic filler to the imidazole-4, 5-dicarboxylic acid to the polyethyleneimine is 1: (0.6-0.8): (0.1-0.3). According to the invention, the PVC resin is used as matrix resin, and the weather resistance and the waterproof performance of the PVC resin are effectively improved by co-doping the ASA blending alloy granules and the modified composite filler.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of building materials, in particular to a tile with good waterproof performance and a preparation method thereof. BACKGROUND

[0002] As a traditional building material, the tile is widely used in the repair of ancient buildings and the construction of buildings with an ancient style. With the increasing requirements for the performance of materials in the modern building industry, especially the increasing requirements for waterproof performance, durability and aesthetic appearance, the traditional clay or shale baked tile has been difficult to meet the actual use requirements. The traditional tile has obvious defects in waterproof performance and is easy to penetrate when encountering water, resulting in damage to the building structure.

[0003] In order to solve the problem of easy penetration of the traditional tile, some waterproof coatings appear on the market at present, which can be coated on the surface of the tile to enhance the waterproof performance of the tile. However, this external method often reduces the aesthetic appearance and durability of the tile. Therefore, as a new type of environmentally friendly building material, the resin tile provides a new technical path for the performance improvement of the tile due to its light weight, corrosion resistance and other characteristics. However, the resin tile still has problems such as insufficient weather resistance during long-term use, especially easy deformation and cracking under extreme climate conditions, resulting in attenuation of the waterproof performance. SUMMARY

[0004] In order to improve the waterproof performance of the resin tile and prolong the service life of the resin tile, the application provides a tile with good waterproof performance and a preparation method thereof.

[0005] In a first aspect, the application provides a tile with good waterproof performance, which adopts the following technical scheme: A tile with good waterproof performance is prepared from the following raw materials by weight parts: PVC resin 70-85 parts, ASA co-mixed gold particle 5-8 parts, modified composite filler 10-15 parts, polyethylene wax 0.4-0.8 parts, stabilizer 1-1.5 parts, and color powder 0-3 parts; The preparation raw materials of the modified composite filler include a composite inorganic filler, imidazole-4,5-dicarboxylic acid and polyethyleneimine, and the mass ratio of the composite inorganic filler, imidazole-4,5-dicarboxylic acid and polyethyleneimine is 1:(0.6-0.8):(0.1-0.3).

[0006] Preferably, the composite inorganic filler includes montmorillonite and titanium white powder with a mass ratio of 1:(0.3-0.5).

[0007] By adopting the technical scheme, the tile with good waterproof performance in the application takes PVC resin as a base resin, and effectively improves the weather resistance and waterproof performance of the PVC resin by co-doping ASA co-mixed golden granules and modified composite fillers. The ASA co-mixed golden granules and the PVC resin have excellent compatibility, can realize uniform mixing at a micro scale, form a stable blending system, and the acrylate rubber and acrylonitrile in the molecular structure of the ASA have an inhibitory effect on the formation of the conjugated double bond of the PVC molecules, thereby delaying the ultraviolet aging of the PVC, and when applied to the tile, the weather resistance of the tile is enhanced, the material aging and performance attenuation caused by long-term light and oxidation are reduced, and the service life of the tile is prolonged.

[0008] In addition, the montmorillonite and the titanium white powder can be uniformly dispersed in the blending system after modification, significantly enhance the compactness of the resin, and effectively improve the problem of insufficient waterproof performance of the PVC resin after blending with the ASA co-mixed golden granules. The imidazole-4,5-dicarboxylic acid can strip the montmorillonite layers, the polyethyleneimine is grafted on the surfaces of the montmorillonite and the titanium white powder, and at the same time, the addition reaction between the polyethyleneimine and the acrylonitrile makes the composite inorganic filler and the resin have stronger binding force, the modified composite filler is uniformly dispersed and forms a dense waterproof layer, effectively prevents the penetration of water, and cooperates with the ASA co-mixed golden granules to ensure the durability of the waterproof performance of the tile.

[0009] Preferably, the preparation method of the modified composite filler comprises the following steps: After the montmorillonite and the titanium white powder are uniformly mixed, they are added to a NaOH solution, ultrasonically dispersed for 10-20 min, imidazole-4,5-dicarboxylic acid is added, and the dispersion is continued for 1-2 h, a dispersion liquid is obtained, the polyethyleneimine is added to the dispersion liquid, and stirring reaction is carried out for 2-3 h, and after filtration, washing and drying, the modified composite filler is obtained.

[0010] More preferably, the titanium white powder is rutile titanium white powder.

[0011] By adopting the technical scheme, the imidazole-4, 5-dicarboxylic acid has an imidazole ring and two carboxyl groups in the molecular structure, the montmorillonite and titanium dioxide are mixed and then dispersed in a NaOH solution under ultrasonic, so that the two are uniformly dispersed, wherein the imidazole ring can enter the middle of the montmorillonite layer, the molecular size of which forces the interlayer spacing of the kaolin to increase, and the carboxyl group can chemically react with the active hydroxyl group on the surface of the montmorillonite and titanium dioxide, thereby being more firmly "anchored" in the interlayer, not only expanding the interlayer spacing, but also playing a bridging and stabilizing structure role. Then, polyethyleneimine is added, the amino group in the polyethyleneimine molecule can react with the other carboxyl group in the imidazole-4, 5-dicarboxylic acid to form a stable chemical bond, further improving the surface properties of the modified composite inorganic filler, so that the modified composite inorganic filler has better dispersibility and can better combine with the PVC resin and the ASA co-mixed granular material and other raw materials, enhance the stability and compactness of the internal structure of the blue tile, reduce the deformation and cracking of the blue tile, reduce the penetration of water, and thus effectively improve the waterproof performance of the blue tile.

[0012] Preferably, the ASA co-mixed granular material includes the following raw materials in parts by weight: ASA resin 15-18 parts, SAN resin 3-5 parts, antioxidant 0.12-0.14 parts, and ultraviolet absorber 0.10-0.15 parts.

[0013] Preferably, the mass ratio of the ASA resin to the SAN resin is 10:(1-3).

[0014] By adopting the above technical scheme, the ASA co-mixed granular material can effectively improve the impact resistance and weather resistance of the PVC resin. The ASA resin has good weather resistance, and the SAN resin has high rigidity and impact resistance. By adding a certain proportion of SAN resin and blending with ASA resin, the problem of insufficient processing stability of pure ASA resin can be improved. The ASA co-mixed granular material forms a dispersed phase in the PVC resin matrix, which can absorb and disperse impact energy, thereby effectively improving the impact resistance of the PVC resin. At the same time, since the wavelength of sunlight that causes aging of the ASA resin and the SAN resin is less, and the antioxidant and the ultraviolet absorber are added, the anti-aging performance of the PVC resin can be effectively improved.

[0015] Preferably, the stabilizer is a calcium-zinc composite stabilizer.

[0016] More preferably, the calcium-zinc composite stabilizer includes calcium stearate and zinc stearate.

[0017] By adopting the above technical scheme, the calcium-zinc composite stabilizer can reduce the decomposition of the PVC resin at high temperatures, and improve the thermal stability and weather resistance of the blue tile.

[0018] Preferably, the antioxidant includes one or more of antioxidant 1010, antioxidant 1076, antioxidant 168, antioxidant 626.

[0019] Preferably, the ultraviolet absorber includes one or more of UV-531, UV-327, UV-1084.

[0020] By adopting the above technical solution, the ultraviolet absorber and the antioxidant work together to protect the green tile material from different angles. On the one hand, the ultraviolet absorber reduces the direct damage of ultraviolet rays to the material, and on the other hand, the antioxidant inhibits the oxidation reaction. The two work together to effectively improve the durability and service life of the green tile, and ensure the stability of the waterproof performance of the green tile in long-term use.

[0021] In a second aspect, the application provides a preparation method of a green tile with good waterproof performance, which adopts the following technical solution: a preparation method of a green tile with good waterproof performance, comprising the following steps: (1) melt and mix ASA resin, SAN resin, antioxidant, ultraviolet absorber at 170-220℃, extrude and granulate to obtain ASA co-mixed alloy granules; (2) put PVC resin, ASA co-mixed alloy granules, modified composite filler, polyethylene wax, stabilizer, and color powder into a mixer, melt and mix at 150℃-170℃ for 20-30min to obtain a premix; transfer the premix to an extruder for heating and extrusion to obtain a long sheet-shaped resin tile, and then transfer the long sheet-shaped resin tile to a shaping mold for heating and shaping to obtain a green tile with good waterproof performance.

[0022] Preferably, the extrusion temperature in the extruder is 180-210℃, and the shaping temperature is 160-170℃.

[0023] By adopting the above technical solution, the ASA co-mixed alloy granules have good weather resistance, so that the green tile is not prone to deformation and cracking in long-term use. The modified composite filler can improve the compactness of the resin system, thereby improving the waterproof performance of the green tile. The two work together to enhance the PVC resin, and the prepared green tile has good weather resistance and waterproof performance, which can resist extreme weather and effectively prevent water penetration, prolong the service life of the green tile, and avoid damage to the building structure due to water penetration.

[0024] The application has the following beneficial effects: The waterproofing performance of the tile is improved by using PVC resin as the base resin, and by mixing ASA co-granules and modified composite fillers.

[0025] In addition, the montmorillonite and titanium dioxide are modified to be uniformly dispersed in the blending system, which significantly enhances the compactness of the resin and effectively improves the waterproofing performance of the PVC resin after mixing with the ASA co-granules. The imidazole-4, 5-dicarboxylic acid can peel off the montmorillonite layers, and the polyethyleneimine is grafted onto the surfaces of the montmorillonite and titanium dioxide. At the same time, the addition reaction between the polyethyleneimine and the acrylonitrile makes the composite inorganic filler have stronger binding force with the resin. The modified composite filler is uniformly dispersed and forms a dense waterproof layer, effectively preventing water penetration, and cooperates with the ASA co-granules to ensure the durability of the waterproof performance of the tile. DETAILED DESCRIPTION

[0026] The application will be further described in detail below in conjunction with the examples.

[0027] Preparation Example 1 Preparation of modified composite filler 7.7 kg of montmorillonite and 2.3 kg of titanium dioxide (rutile type) were uniformly mixed and then added to a NaOH solution with a mass fraction of 25%, ultrasonic dispersion was performed for 10 min, 6 kg of imidazole-4, 5-dicarboxylic acid was added, and dispersion was continued for 1 h to obtain a dispersion liquid, 1 kg of polyethyleneimine was added to the dispersion liquid, stirring reaction was performed for 2 h, and after filtration, washing, and drying, the modified composite filler was obtained.

[0028] The polyethyleneimine is a branched polyethyleneimine, which is purchased from Shanghai Youen Chemical Co., Ltd.

[0029] Preparation Example 2 Preparation of modified composite filler 9.3 kg of montmorillonite and 3.7 kg of titanium dioxide (rutile type) were uniformly mixed and then added to a NaOH solution with a mass fraction of 30%, ultrasonic dispersion was performed for 15 min, 9 kg of imidazole-4, 5-dicarboxylic acid was added, and dispersion was continued for 1.5 h to obtain a dispersion liquid, 2.6 kg of polyethyleneimine was added to the dispersion liquid, stirring reaction was performed for 2.5 h, and after filtration, washing, and drying, the modified composite filler was obtained.

[0030] The branched polyethyleneimine is purchased from Shanghai Youun Chemical Co., Ltd.

[0031] Preparation Example 3 Preparation of modified composite filler 10 kg of montmorillonite and 5 kg of titanium white (rutile type) were mixed uniformly and then added to a 35% by mass NaOH solution, ultrasonically dispersed for 20 min, 12 kg of imidazole-4,5-dicarboxylic acid was added and continued to be dispersed for 2 h to obtain a dispersion liquid, 4.5 kg of polyethyleneimine was added to the dispersion liquid, stirred and reacted for 3 h, and then filtered, washed and dried to obtain the modified composite filler.

[0032] The branched polyethyleneimine is purchased from Shanghai Youun Chemical Co., Ltd.

[0033] Preparation Example 4 The difference between this preparation example and Preparation Example 2 is that the titanium white is replaced with montmorillonite in equal mass.

[0034] Preparation Example 5 The difference between this preparation example and Preparation Example 2 is that the imidazole-4,5-dicarboxylic acid is replaced with imidazole in equal mass. Example

[0035] Example 1 A green tile with good waterproof performance, comprising: 70 kg of PVC resin, 5 kg of ASA co-mixed golden granules, 10 kg of modified composite filler (prepared in Preparation Example 1), 0.4 kg of polyethylene wax, 0.5 kg of calcium stearate, 0.5 kg of zinc stearate, and 1 kg of color powder.

[0036] The ASA co-mixed golden granules comprise the following raw materials: 15 kg of ASA resin, 3 kg of SAN resin, 0.06 kg of antioxidant 1010, 0.06 kg of antioxidant 168, and 0.1 kg of UV-327.

[0037] The PVC resin is purchased from Jinan Xiangfeng Weiye Chemical Co., Ltd., with a brand of BJ-65; The polyethylene wax is purchased from Hangzhou Kaijie Plastic Technology Co., Ltd., with a model of KJ-B120; The ASA resin is selected from Germany BASF Company 777k; The SAN resin is selected from South Korea LG Chemical Company 82TR.

[0038] The preparation method of the ASA co-mixed golden granules is as follows: the ASA resin, the SAN resin, the antioxidant 1010, the antioxidant 168, and the UV-327 are melt-mixed at 175 ℃, extruded and granulated to obtain the ASA co-mixed golden granules.

[0039] The preparation method of the tile with good waterproof performance comprises the following steps: The PVC resin, the ASA co-mixed granular material, the modified composite filler, the polyethylene wax, the calcium stearate, the zinc stearate and the color powder are put into a mixer, and are melt-mixed at 150 DEG C for 20 min to obtain a premix; the premix is transferred to an extruder for heating and extrusion to obtain resin tiles in the shape of long pieces; and the resin tiles in the shape of long pieces are transported to a shaping mold for heating and shaping at 160 DEG C to obtain the tile with good waterproof performance.

[0040] The parameters of the extruder are as follows: screw rotation speed 110 r / min, zone 1 180 DEG C, zone 2 180 DEG C, zone 3 195 DEG C, zone 4 200 DEG C, zone 5 195 DEG C, zone 6 190 DEG C and head 190 DEG C.

[0041] Example 2 The tile with good waterproof performance comprises 78 kg of PVC resin, 6 kg of ASA co-mixed granular material, 13 kg of modified composite filler (prepared in Preparation Example 2), 0.6 kg of polyethylene wax, 0.6 kg of calcium stearate, 0.6 kg of zinc stearate and 2 kg of color powder.

[0042] The ASA co-mixed granular material comprises the following raw materials: 16 kg of ASA resin, 4 kg of SAN resin, 0.07 kg of antioxidant 1076, 0.06 kg of antioxidant 626 and 0.13 kg of UV-531.

[0043] The PVC resin is purchased from Jinan Xiangfeng Weiye Chemical Co., Ltd., and the brand is BJ-65; The polyethylene wax is purchased from Hangzhou Kaijie Plastic Technology Co., Ltd., and the model is KJ-B120; The ASA resin is selected from BASF 777k of Germany; The SAN resin is selected from 82TR of LG Chemical of South Korea.

[0044] The preparation method of the ASA co-mixed granular material is as follows: the ASA resin, the SAN resin, the antioxidant 1076, the antioxidant 626 and the UV-531 are melt-mixed at 190 DEG C, and are extruded and granulated to obtain the ASA co-mixed granular material.

[0045] The preparation method of the tile with good waterproof performance comprises the following steps: The PVC resin, the ASA co-mixed granular material, the modified composite filler, the polyethylene wax, the calcium stearate, the zinc stearate and the color powder are put into a mixer, and are melt-mixed at 160 DEG C for 25 min to obtain a premix; the premix is transferred to an extruder for heating and extrusion to obtain resin tiles in the shape of long pieces; and the resin tiles in the shape of long pieces are transported to a shaping mold for heating and shaping at 165 DEG C to obtain the tile with good waterproof performance.

[0046] Wherein, the extruder parameters are: screw speed 120 r / min, 1 area 185℃, 2 area 190℃, 3 area 195℃, 4 area 205℃, 5 area 195℃, 6 area 190℃, head 190℃.

[0047] Example 3 A good waterproof green tile, comprising: 85kg PVC resin, 8kg ASA co-mixed gold pellets, 15kg modified composite filler (prepared in Preparation Example 3), 0.8kg polyethylene wax, 0.8kg calcium stearate, 0.7kg zinc stearate, 3kg color powder.

[0048] Wherein, the ASA co-mixed gold pellets comprise the following raw materials: 18kg ASA resin, 5kg SAN resin, 0.07kg antioxidant 1010, 0.07kg antioxidant 168, 0.13kg UV-1084.

[0049] Wherein, the PVC resin is purchased from Jinan Xiangfeng Weiye Chemical Co., Ltd., and the brand is BJ-65; The polyethylene wax is purchased from Hangzhou Kaijie Plastic Technology Co., Ltd., and the model is KJ-B120; The ASA resin is selected from BASF Company 777k in Germany; The SAN resin is selected from LG Chemical Company 82TR in South Korea.

[0050] Wherein, the preparation method of the ASA co-mixed gold pellets is: melt mixing the ASA resin, SAN resin, antioxidant 1010, antioxidant 168 and UV-1084 at 200℃, extruding and granulating to obtain the ASA co-mixed gold pellets.

[0051] Wherein, the preparation method of the good waterproof green tile of the embodiment comprises the following steps: The PVC resin, ASA co-mixed gold pellets, modified composite filler, polyethylene wax, calcium stearate, zinc stearate and color powder are put into a mixer and melt mixed at 170℃ for 30min to obtain a premix; the premix is transferred to an extruder for heating and extrusion to obtain a long sheet-shaped resin tile, and the long sheet-shaped resin tile is transported to a shaping mold for heating and shaping at 170℃ to obtain a good waterproof green tile.

[0052] Wherein, the extruder parameters are: screw speed 130 r / min, 1 area 190℃, 2 area 195℃, 3 area 195℃, 4 area 210℃, 5 area 205℃, 6 area 200℃, head 195℃.

[0053] Example 4 The difference between this embodiment and Embodiment 2 is that the mass ratio of ASA resin to SAN resin in the ASA co-blended gold granules is approximately 2:1, i.e., 16 kg of ASA resin and 8 kg of SAN resin.

[0054] Comparative Example Comparative Example 1 A type of waterproof tile differs from Example 2 in that it uses the modified composite filler prepared in Preparation Example 4.

[0055] Comparative Example 2 A type of waterproof tile differs from Example 2 in that it uses the modified composite filler prepared in Preparation Example 5.

[0056] Comparative Example 3 A type of waterproof tile differs from Example 2 in that the modified composite filler is replaced by 9.3 kg of montmorillonite and 3.7 kg of titanium dioxide.

[0057] Comparative Example 4 The difference between this type of waterproof tile and Example 2 is that no modified composite filler was added.

[0058] Comparative Example 5 A new type of waterproof tile differs from Example 2 in that the ASA co-blended gold particles are replaced with ASA resin by mass. The ASA resin used is BASF 777k from Germany.

[0059] Comparative Example 6 A type of waterproof tile differs from Example 2 in that the ASA co-mixed gold granules are replaced with modified composite fillers.

[0060] Comparative Example 7 A type of waterproof tile differs from Example 2 in that the modified composite filler is replaced with ASA co-mixed gold particles.

[0061] Performance testing 1. Water absorption test: Select the blue tiles prepared in each example and comparative example, clean their surfaces, record the initial weight of the tiles using a precision balance, then soak the tiles in water for 48 hours, take out the tiles and wipe off the surface moisture, weigh them immediately, record the weight difference of the tiles before and after soaking, and calculate the water absorption rate.

[0062] 2. Notched impact strength test: The impact strength is tested using a ZBC1400-1 impact testing machine in accordance with the provisions of GB / T 1843-2008.

[0063] 3. Bending strength test: The bending strength was tested according to the GB / T 9341-2008 standard, the sample type was type I, the sample size (mm) was 80 (±0.2) x 10 (±0.2) x 4.0 (±0.2), and the bending speed was 10 mm / min.

[0064] 4. Anti-salt freeze-thaw cycle test: According to the GB / T 41931-2022 standard, the sample was placed in a low temperature test box (-25℃) for freezing for a certain time of 16 hours, then moved to a water bath or environmental chamber at 23℃ for thawing for 8 hours, and cycled for 100 times, to observe whether there were cracks, peeling and other phenomena on the surface of the tile.

[0065] 5. Aging resistance test: According to the provisions of GB / T 16422.2-2022 and GB / T 1843-2008, the sample was irradiated by ultraviolet lamp for 1000h, and the retention rate of impact strength was tested and calculated, with unit of %.

[0066] Table 1 According to the comparison of Example 2 and Example 4 and the data in Table 1, it can be seen that compared with Example 2, the increase of SAN content in the ASA co-mixed granules in Example 4, although it can improve the bending strength of the tile, but it will cause the "craze" to develop into a destructive crack when the tile is subjected to impact force, resulting in a decrease in impact strength, thereby causing the waterproof performance of the tile to decrease. When the mass ratio of ASA resin to SAN resin in the ASA co-mixed granules is 4:1, the waterproof performance of the green tile can be better.

[0067] According to the comparison of Example 2 and Comparative Example 1 and the data in Table 1, it can be seen that Comparative Example 1 uses single montmorillonite as filler, and single montmorillonite as inorganic filler cannot play a similar role of absorbing and shielding ultraviolet rays like rutile titanium dioxide, and cannot make the green tile have the best chemical stability and good aging resistance and anti-powdering performance. While Example 2 can effectively improve the waterproof performance and weather resistance of the green tile by mixing montmorillonite and titanium dioxide.

[0068] According to the comparison of Example 2 and Comparative Example 2 and the data in Table 1, it can be seen that using imidazole-4,5-dicarboxylic acid to modify montmorillonite and titanium dioxide, compared with using imidazole, the carboxyl group can react with the hydroxyl group on the surface of montmorillonite and titanium dioxide to form a more stable chemical bond, thereby making the modified composite filler have better dispersibility and compatibility, to enhance the structural stability of the green tile, and thereby improve the waterproof performance of the green tile.

[0069] According to the comparison of embodiment 2 and comparative examples 3-4 and the data in table 1, it can be seen that: the montmorillonite and titanium dioxide in comparative example 3 are not modified, and the compatibility with the resin is poor, which can cause the insufficient waterproof performance, durability and weather resistance of the green tile, and the green tile is prone to deformation and cracking after long-term use, resulting in the attenuation of waterproof performance; no modified composite filler is added in comparative example 4, which cannot improve the density of the resin system, and also leads to the insufficient waterproof performance of the green tile.

[0070] According to the comparison of embodiment 2 and comparative example 5 and the data in table 1, it can be seen that: compared with pure ASA resin, by adding a certain proportion of SAN resin and blending with ASA resin, the problem of insufficient processing stability of pure ASA resin can be improved, the processing rheological properties of the blend are enhanced, and the prepared green tile has good performance.

[0071] According to the comparison of embodiment 2 and comparative examples 6-7 and the data in table 1, it can be seen that: the ASA blend granules and the modified composite filler play a synergistic role in the PVC resin system, the modified composite filler is dispersed in the blending system, which significantly enhances the density of the resin, effectively prevents the penetration of moisture, effectively improves the problem of insufficient waterproof performance of the PVC resin after blending with the ASA blend granules, and ensures the durability of the waterproof performance of the green tile.

[0072] The specific embodiment is only an explanation of the present application, which is not a limitation of the present application, and those skilled in the art can make modifications to the specific embodiment without creative contribution after reading the present specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A type of waterproof tile, characterized in that, It is prepared from the following raw materials in parts by weight: 70-85 parts PVC resin, 5-8 parts ASA co-blended granules, 10-15 parts modified composite filler, 0.4-0.8 parts polyethylene wax, 1-1.5 parts stabilizer, and 0-3 parts color powder; The raw materials for preparing the modified composite filler include composite inorganic filler, imidazole-4,5-dicarboxylic acid and polyethyleneimine, and the mass ratio of the composite inorganic filler, imidazole-4,5-dicarboxylic acid and polyethyleneimine is 1:(0.6-0.8):(0.1-0.3).

2. The waterproof tile according to claim 1, characterized in that, The composite inorganic filler comprises montmorillonite and titanium dioxide in a mass ratio of 1:(0.3-0.5).

3. The waterproof tile according to claim 1, characterized in that, The preparation method of the modified composite filler includes the following steps: Montmorillonite and titanium dioxide were mixed evenly and then added to NaOH solution. The mixture was ultrasonically dispersed for 10-20 minutes. Imidazole-4,5-dicarboxylic acid was added and the mixture was dispersed for another 1-2 hours to obtain a dispersion. Polyethyleneimine was added to the dispersion and the mixture was stirred for 2-3 hours. After filtration, washing, and drying, the modified composite filler was obtained.

4. The waterproof tile according to claim 1, characterized in that, The ASA co-blended gold granules comprise the following raw materials in parts by weight: 15-18 parts ASA resin, 3-5 parts SAN resin, 0.12-0.14 parts antioxidant, and 0.10-0.15 parts ultraviolet absorber.

5. A type of waterproof tile according to claim 4, characterized in that, The mass ratio of ASA resin to SAN resin is 10:(1-3).

6. The waterproof tile according to claim 1, characterized in that, The stabilizer is a calcium-zinc composite stabilizer.

7. A type of waterproof tile according to claim 4, characterized in that, The antioxidants include one or more of antioxidants 1010, 1076, 168, and 626.

8. A type of waterproof tile according to claim 4, characterized in that, The ultraviolet absorber includes one or more of UV-531, UV-327, and UV-1084.

9. A method for preparing a waterproof blue tile according to any one of claims 1-8, characterized in that, Includes the following steps: (1) ASA resin, SAN resin, antioxidant and ultraviolet absorber are melt-blended at 170-220℃, extruded and granulated to obtain ASA co-blended gold granules; (2) Put PVC resin, ASA co-mixed gold granules, modified composite filler, polyethylene wax, stabilizer and color powder into a mixer and melt-mix at 150℃-170℃ for 20-30 minutes to obtain a premix; transfer the premix to an extruder for heating and extrusion to obtain resin tiles in the shape of long sheets; transport the long sheet-shaped resin tiles to a shaping mold for heating and shaping to obtain blue tiles with good waterproof performance.

10. The method for preparing a waterproof blue tile according to claim 9, characterized in that, The extrusion temperature in the extruder is 180-210℃, and the shaping temperature is 160-170℃.

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