A high-toughness thermoformed genuine stone basin and its preparation method

Abstract

The present invention provides a high-toughness thermoformed natural stone basin and a preparation method thereof, which includes taking an active composition, modified kaolin, modified bentonite, modified additives, alcohol ether carboxylate sodium, titanate coupling agent, isopropanol, artemisia sphaerocephala Krasch gum, aluminum silicate, lithium tantalate and calcium copper titanate, and through processes such as mixing, ultrasonic treatment, refrigeration treatment, preforming pressing, gradient roasting, demolding, etc., a natural stone basin with good strength, toughness, and acid and alkali resistance is obtained.

Description

Technical Field

[0001] The present invention belongs to the technical field of the preparation of Zhenshi basins, and particularly relates to a high-toughness thermoformed Zhenshi basin and a preparation method thereof. Background Art

[0002] Artificial stone is a kind of stone manufactured by an artificial synthesis method. It is usually made by mixing particles or powders of natural stone with resin, cement or other binders. Artificial stone has various types, and each has its specific application fields and characteristics.

[0003] Artificial quartz stone: It is made by mixing quartz particles (usually more than 93%) with resin and pressing. It has high hardness and wear resistance, is not easy to be scratched, has strong pollution resistance, and is very suitable for household decoration such as kitchen countertops and bathroom countertops. Resin artificial stone: It is mainly composed of resin (such as unsaturated polyester resin) and filler (such as aluminum hydroxide), has a relatively soft texture, is easy to be processed and formed, and is commonly used for making kitchen countertops, washbasins, bathtubs, etc. Composite artificial stone: This kind of stone usually contains a combination of various materials, such as resin, quartz powder, marble powder, etc., has both beauty and practicality, and has a wide range of applications. Terrazzo: Although traditional terrazzo is cast and polished on site, modern technology also allows precast terrazzo slabs, which are made by mixing crushed stones, glass or other hard materials with cement or resin binder, and are commonly used for building decoration such as floors and walls. Ceramic artificial stone: It is fired at high temperature, has the characteristics of high strength and wear resistance, and its appearance can imitate the texture of natural stone, and is commonly used for floor and wall decoration.

[0004] At present, household sanitary wares are also one of the main fields of artificial stone. Conventional artificial stone on the market at present is synthesized from different unsaturated resins and calcium carbonate and aluminum hydroxide. The sanitary products made thereof have low hardness, poor toughness and short service life. Summary of the Invention

[0005] The purpose of the present invention is to provide a preparation method of a high-toughness thermoformed Zhenshi basin aiming at the deficiencies in toughness and other aspects of Zhenshi basins in the prior art. By adding components such as active composition powder, modified kaolin, modified bentonite and modified additives to the Zhenshi basin formula, a Zhenshi basin with excellent toughness and strength is obtained.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A preparation method of a high-toughness thermoformed Zhenshi basin, comprising the following steps:

[0008] S1: Prepare active composition powder;

[0009] S2: Prepare modified kaolin;

[0010] S3: Prepare modified bentonite;

[0011] S4: Prepare modified additives;

[0012] S5: By weight, take 25 - 45 parts of the active composition obtained in step S1, 20 - 40 parts of the modified kaolin obtained in step S2, 15 - 25 parts of the modified bentonite obtained in step S3, 5 - 10 parts of the modified additives obtained in step S4, 3 - 6 parts of alcohol ether carboxylate, 2 - 5 parts of titanate coupling agent, 15 - 35 parts of isopropanol, and 2 - 6 parts of Artemisia sphaerocephala Krasch. gum, mix them, and stir at a temperature of 90 - 120°C for 30 - 50 min; then add 3 - 6 parts of aluminum silicate, 2 - 7 parts of lithium tantalate, and 3 - 8 parts of calcium copper titanate, and perform ultrasonic treatment at a power of 200 - 400 W and a frequency of 85 - 95 kHz for 15 - 25 min; subsequently, perform constant temperature refrigeration treatment at a temperature of 0.2 - 0.6°C for 75 - 95 min to obtain a mixture;

[0013] S6: Pour the mixture obtained in step S5 into a mold for pre - forming pressing. First, perform constant temperature sintering at a temperature of 1100 - 1250°C for 15 - 25 min; increase the temperature at a rate of 6 - 10°C / min to 1350 - 1500°C, and continue constant temperature sintering for 25 - 35 min; decrease the temperature at a rate of 5 - 8°C / min to 850 - 920°C and continue constant temperature sintering for 10 - 16 min; then demold, cool to room temperature, and polish to obtain the high - toughness thermoformed fine stone basin.

[0014] Preferably, the preparation process of the active composition powder in step S1 is as follows: Grind 10 - 20 parts of wollastonite, 5 - 10 parts of ultra - white sand, 3 - 8 parts of feldspar, and 2 - 7 parts of diopside powder to a particle size of 80 - 100 nm, and perform constant temperature steam treatment at a temperature of 280 - 300°C for 8 - 12 min; decrease the temperature at a rate of 8 - 10°C / min to 105 - 110°C, and continue constant temperature steam treatment for 15 - 22 min; then perform microwave treatment at a power of 200 - 230 W for 5 - 10 min, perform microwave treatment at a power of 560 - 600 W for 10 - 15 min, and perform microwave treatment at a power of 400 - 430 W for 12 - 18 min to obtain the active composition powder.

[0015] Preferably, the preparation process of the active composition powder is optimized as follows: Grind 15 parts of wollastonite, 8 parts of ultra - white sand, 6 parts of feldspar, and 5 parts of diopside powder to a particle size of 80 - 100 nm, and perform constant temperature steam treatment at a temperature of 290°C for 10 min; decrease the temperature at a rate of 9°C / min to 108°C, and continue constant temperature steam treatment for 18 min; then perform microwave treatment at a power of 220 W for 7 min, perform microwave treatment at a power of 580 W for 12 min, and perform microwave treatment at a power of 420 W for 15 min to obtain the active composition powder.

[0016] Preferably, the preparation process of the modified kaolin in step S2 is as follows: The kaolin is crushed to a particle size of 5 - 10 μm, and according to a solid-liquid ratio of 1 g:5 - 8 ml, an aqueous nitric acid solution with a mass fraction of 20 - 35% is added and stirred evenly. Then, it is magnetized for 8 - 16 min under the condition of a magnetic field strength of 2.2 - 2.8 T, and dried at a temperature of 130 - 150 °C for 25 - 35 min to obtain the modified kaolin.

[0017] Preferably, the preparation process of the modified kaolin is optimized as follows: The kaolin is crushed to a particle size of 5 - 9 μm, and according to a solid-liquid ratio of 1 g:7 ml, an aqueous nitric acid solution with a mass fraction of 30% is added and stirred evenly. Then, it is magnetized for 14 min under the condition of a magnetic field strength of 2.5 T, and dried at a temperature of 140 °C for 30 min to obtain the modified kaolin.

[0018] Preferably, the preparation process of the modified bentonite in step S3 is as follows: According to a solid-liquid ratio of 1 g:3 - 7 ml, the bentonite is added to an aqueous ethanol solution with a mass fraction of 25 - 35% and stirred evenly. Then, it is kept at a constant temperature of 135 - 145 °C for 8 - 12 min, heated to 220 - 240 °C at a rate of 2 - 5 °C / min and kept at a constant temperature for 30 - 40 min. After cooling to room temperature, it is immersed in an aqueous acetic acid solution with a mass fraction of 10% - 15% and stirred evenly, and dried at a temperature of 100 - 120 °C for 35 - 45 min to obtain the modified bentonite.

[0019] Preferably, the preparation process of the modified bentonite is optimized as follows: According to a solid-liquid ratio of 1 g:5 ml, the bentonite is added to an aqueous ethanol solution with a mass fraction of 30% and stirred evenly. Then, it is kept at a constant temperature of 140 °C for 10 min, heated to 230 °C at a rate of 4 °C / min and kept at a constant temperature for 35 min. After cooling to room temperature, it is immersed in an aqueous acetic acid solution with a mass fraction of 12% and stirred evenly, and dried at a temperature of 110 °C for 40 min to obtain the modified bentonite.

[0020] Preferably, the preparation process of the modified additive in step S4 is as follows: By weight, 30 - 50 parts of anorthite, 25 - 35 parts of mullite, 15 - 25 parts of anorthite, 10 - 20 parts of montmorillonite and 1 - 3 parts of talc are mixed evenly in a ball mill; after drying, they are loaded into a mold and heated to 1300 - 1500 °C at a rate of 5 - 10 °C / min, and kept at a constant temperature for reaction for 35 - 45 min to obtain the modified additive.

[0021] Preferably, step S5 is further optimized as follows: By weight, take 40 parts of the active composition obtained in step S1, 35 parts of the modified kaolin obtained in step S2, 22 parts of the modified bentonite obtained in step S3, 8 parts of the modified auxiliary agent obtained in step S4, 5 parts of alcohol ether carboxylate sodium, 4 parts of titanate coupling agent, 20 parts of isopropanol, and 4 parts of Artemisia sphaerocephala Krasch. gum, mix them, and stir at a temperature of 110 °C for 45 min; then add 5 parts of aluminum silicate, 5 parts of lithium tantalate, and 6 parts of calcium copper titanate, and perform ultrasonic treatment at a power of 350 W and a frequency of 92 kHz for 22 min; subsequently, perform constant temperature refrigeration treatment at a temperature of 0.4 °C for 80 min to obtain a mixed material.

[0022] Preferably, step S6 is further optimized as follows: Pour the mixed material obtained in step S5 into a mold for preforming and pressing. First, perform constant temperature sintering at a temperature of 1200 °C for 20 min; increase the temperature to 1480 °C at a rate of 8 °C / min, and continue constant temperature sintering for 28 min; decrease the temperature to 880 °C at a rate of 6 °C / min and continue constant temperature sintering for 12 min.

[0023] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0024] Under the combined action of the active composition, modified kaolin, modified bentonite, and modified auxiliary agent in the present invention, the toughness and strength of the Zhenshi basin can be significantly increased, effectively improving its service performance and service life; by further adding a titanate coupling agent, isopropanol, aluminum silicate, lithium tantalate, calcium copper titanate, etc., the overall strength and toughness of the Zhenshi basin are further improved, effectively improving the corrosion resistance. Alcohol ether carboxylate sodium and Artemisia sphaerocephala Krasch. gum can reduce internal defects of the material, effectively transmit stress, avoid crack generation, and improve the bending strength;

[0025] The common process of the present invention includes blank making, ball milling, powder spraying, forming, glazing, printing, firing (water absorption < 0.03, fully vitrified), sorting. The slab thickness > 14 mm. The rock slab is placed on a high-temperature refractory plate. Under the process treatment of a hot bending furnace, the rock slab falls off the high-temperature refractory plate by its own weight, and then cools and forms, with hole digging, edge cutting, and edge grinding;

[0026] After secondary hot bending, the resistance to deformation, toughness, and ductility of the rock slab are relatively good. Different sizes and basin shapes can be customized, and the product qualification rate can reach more than 98%. After high temperature, overburning will occur, resulting in embrittlement, swelling, and inability to fall off the high-temperature refractory plate. The glaze surface will have overburning, blistering, pinholes, and glaze cracking. After secondary hot bending, the brittleness is large, the basin cracks, and cracks occur after cooling and during hole opening. Detailed implementation mode

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] The raw materials used in the present invention are as follows:

[0029] Sodium alcohol ether carboxylate is from Hubei Wande Chemical Co., Ltd., product number WD4395; titanate coupling agent is from Shanghai Dongjindu New Material Technology Co., Ltd., product number 14; artemisia sphaerocephala gum is from Anhui RunTai Biotechnology Co., Ltd., product number 2875; bentonite is from Shandong Zhengxing New Material Co., Ltd., product number CG8; talc is from Shanghai Yuanye Biotechnology Co., Ltd., product number S33232.

[0030] Example 1

[0031] The present invention provides a preparation method for a high-toughness thermoformed genuine stone basin, and the steps are as follows:

[0032] S1: Grind 10 g of wollastonite, 5 g of ultra-white sand, 3 g of feldspar, and 2 g of diopside powder to a particle size of 80 - 100 nm, and perform constant-temperature steam treatment at 280 °C for 8 min; cool down to 105 °C at a rate of 8 °C / min, and continue constant-temperature steam treatment for 15 min; then perform microwave treatment at a power of 200 W for 5 min, microwave treatment at a power of 560 W for 10 min, and microwave treatment at a power of 400 W for 12 min to obtain an active composition powder;

[0033] S2: Crush kaolin to a particle size of 5 - 10 μm, add a 20% nitric acid aqueous solution according to a solid-liquid ratio of 1 g:5 ml, stir evenly, perform magnetization treatment at a magnetic field strength of 2.2 T for 8 min, and dry at 130 °C for 25 min to obtain modified kaolin;

[0034] S3: Add bentonite to a 25% ethanol aqueous solution according to a solid-liquid ratio of 1 g:3 ml, stir evenly at a rate of 800 r / min, perform constant temperature at 135 °C for 8 min, heat up to 220 °C at a rate of 2 °C / min and continue constant temperature for 30 min, cool to room temperature, immerse in a 10% acetic acid aqueous solution, stir evenly at a rate of 600 r / min, and dry at 100 °C for 35 min to obtain modified bentonite;

[0035] S4: Take 30 g of anorthite, 25 g of mullite, 15 g of anorthite, 10 g of montmorillonite, and 1 g of talc, mix them evenly in a ball mill; after drying, load them into a mold, heat up to 1300 °C at a rate of 5 °C / min, and keep the temperature for reaction for 35 min to obtain a modified auxiliary agent;

[0036] S5: Take 25 g of the active composition obtained in step S1, 20 g of the modified kaolin obtained in step S2, 15 g of the modified bentonite obtained in step S3, 5 g of the modified additive obtained in step S4, 3 g of alcohol ether carboxylate, 2 g of titanate coupling agent, 15 g of isopropanol and 2 g of Artemisia sphaerocephala Krasch. gum, mix them, and stir at a rate of 800 r / min at a temperature of 90 °C for 30 min; then add 3 g of aluminum silicate, 2 g of lithium tantalate and 3 g of calcium copper titanate, and perform ultrasonic treatment at a power of 200 W and a frequency of 85 kHz for 15 min; subsequently, perform constant temperature refrigeration treatment at a temperature of 0.2 °C for 75 min to obtain a mixed material;

[0037] S6: Pour the mixed material obtained in step S5 into a mold for preforming and pressing. First, sinter at a constant temperature of 1100 °C for 15 min; increase the temperature to 1350 °C at a rate of 6 °C / min and continue sintering at a constant temperature for 25 min; decrease the temperature to 850 °C at a rate of 5 °C / min and continue sintering at a constant temperature for 10 min; then demold, cool to room temperature, and polish to obtain the high-toughness thermoformed Zhen stone basin.

[0038] Example 2

[0039] The present invention provides a method for preparing a high-toughness thermoformed Zhen stone basin, and the steps are as follows:

[0040] S1: Grind 20 g of wollastonite, 10 g of ultra-white sand, 8 g of feldspar and 7 g of diopside powder to a particle size of 80 - 100 nm, and perform constant temperature steam treatment at a temperature of 300 °C for 12 min; decrease the temperature to 110 °C at a rate of 10 °C / min and continue constant temperature steam treatment for 22 min; then perform microwave treatment at a power of 230 W for 10 min, perform microwave treatment at a power of 600 W for 15 min, and perform microwave treatment at a power of 430 W for 18 min to obtain an active composition powder;

[0041] S2: Crush kaolin to a particle size of 5 - 10 μm, add an aqueous nitric acid solution with a mass fraction of 35% according to a solid-liquid ratio of 1 g:8 ml, stir evenly, perform magnetization treatment under the condition of a magnetic field strength of 2.8 T for 16 min, and dry at a temperature of 150 °C for 35 min to obtain modified kaolin;

[0042] S3: Add bentonite to an aqueous ethanol solution with a mass fraction of 35% according to a solid-liquid ratio of 1 g:7 ml, stir evenly, keep the temperature constant at 145 °C for 12 min, increase the temperature to 240 °C at a rate of 5 °C / min and continue to keep the temperature constant for 40 min, cool to room temperature, impregnate in an aqueous acetic acid solution with a mass fraction of 15%, stir evenly, and dry at a temperature of 120 °C for 45 min to obtain modified bentonite;

[0043] S4: Take 50 g of anorthite, 35 g of mullite, 25 g of Nig, 20 g of montmorillonite, and 3 g of talc, mix them evenly in a ball mill; after drying, load them into a mold, heat them up to 1500 °C at a rate of 10 °C / min, and hold for a reaction for 45 min to obtain a modified additive;

[0044] S5: Take 45 g of the active composition obtained in step S1, 40 g of the modified kaolin obtained in step S2, 25 g of the modified bentonite obtained in step S3, 10 g of the modified additive obtained in step S4, 6 g of alcohol ether carboxylate, 5 g of titanate coupling agent, 35 g of isopropanol, and 6 g of artemisia sphaerocephala gum, mix them, stir at a rate of 500 r / min at a temperature of 120 °C for 50 min; then add 6 g of aluminum silicate, 7 g of lithium tantalate, and 8 g of calcium copper titanate, and perform ultrasonic treatment at a power of 400 W and a frequency of 95 kHz for 25 min; subsequently, perform constant temperature refrigeration treatment at a temperature of 0.6 °C for 95 min to obtain a mixture;

[0045] S6: Pour the mixture obtained in step S5 into a mold for preforming and pressing. First, sinter it at a constant temperature of 1250 °C for 25 min; heat it up to 1500 °C at a rate of 10 °C / min and continue sintering at a constant temperature for 35 min; cool it down to 920 °C at a rate of 8 °C / min and continue sintering at a constant temperature for 16 min; then demold, cool it to room temperature, and polish it to obtain the high-toughness thermoformed zhenstone basin.

[0046] Example 3

[0047] The present invention provides a method for preparing a high-toughness thermoformed zhenstone basin, and the steps are as follows:

[0048] S1: Grind 15 g of wollastonite, 8 g of ultra-white sand, 6 g of feldspar, and 5 g of diopside powder to a particle size of 80 - 100 nm, perform constant temperature steam treatment at a temperature of 290 °C for 10 min; cool it down to 108 °C at a rate of 9 °C / min and continue constant temperature steam treatment for 18 min; then perform microwave treatment at a power of 220 W for 7 min, perform microwave treatment at a power of 580 W for 12 min, and perform microwave treatment at a power of 420 W for 15 min to obtain an active composition powder;

[0049] S2: Crush kaolin to a particle size of 5 - 10 μm, add a 30% nitric acid aqueous solution according to a solid-liquid ratio of 1 g:7 ml, stir evenly, perform magnetization treatment under the condition of a magnetic field strength of 2.5 T for 14 min, and dry it at a temperature of 140 °C for 30 min to obtain modified kaolin;

[0050] S3: Add bentonite to an ethanol aqueous solution with a mass fraction of 30% at a solid-liquid ratio of 1 g: 5 ml, stir evenly, keep it at a constant temperature of 140 °C for 10 min, heat it to 230 °C at a rate of 4 °C / min and continue to keep it at a constant temperature for 35 min, cool it to room temperature, immerse it in an acetic acid aqueous solution with a mass fraction of 12%, stir evenly, and dry it at a temperature of 110 °C for 40 min to obtain modified bentonite;

[0051] S4: Take 45 g of anorthite, 28 g of mullite, 22 g of Nig, 15 g of montmorillonite and 2 g of talc, mix them evenly in a ball mill; after drying, load them into a mold, heat it to 1460 °C at a rate of 8 °C / min, and keep it at a constant temperature for reaction for 42 min to obtain a modified additive;

[0052] S5: Take 40 g of the active composition obtained in step S1, 35 g of the modified kaolin obtained in step S2, 22 g of the modified bentonite obtained in step S3, 8 g of the modified additive obtained in step S4, 5 g of alcohol ether carboxylate, 4 g of titanate coupling agent, 20 g of isopropanol and 4 g of Artemisia sphaerocephala Krasch gum, mix them, stir at a rate of 500 r / min at a temperature of 110 °C for 45 min; then add 5 g of aluminum silicate, 5 g of lithium tantalate and 6 g of calcium copper titanate, and perform ultrasonic treatment at a power of 350 W and a frequency of 92 kHz for 22 min; then perform constant temperature refrigeration treatment at a temperature of 0.4 °C for 80 min to obtain a mixture;

[0053] S6: Pour the mixture obtained in step S5 into a mold for preforming and pressing, first keep it at a constant temperature of 1200 °C for sintering for 20 min; heat it to 1480 °C at a rate of 8 °C / min, and continue to keep it at a constant temperature for sintering for 28 min; cool it to 880 °C at a rate of 6 °C / min and continue to keep it at a constant temperature for sintering for 12 min; then demold, cool it to room temperature, and polish it to obtain the high-toughness thermoformed Zhen stone basin.

[0054] Comparative Example 1

[0055] The difference between this comparative example and Example 1 is that in step S1, only 10 g of wollastonite, 5 g of ultra-white sand, 3 g of feldspar and 2 g of diopside powder are ground to a particle size of 80 - 100 nm, and are treated with constant temperature steam at a temperature of 280 °C for 8 min; no subsequent steps are performed.

[0056] Comparative Example 2

[0057] The difference between this comparative example and Example 1 is that step S2 is directly kaolin without modification treatment, and other steps are the same.

[0058] Comparative Example 3

[0059] The difference between this comparative example and Example 1 is that in step S3, it is directly bentonite without modification treatment, and other steps are the same.

[0060] Comparative Example 4

[0061] The difference between this comparative example and Example 1 is that in step S4, 30 g of feldspar, 25 g of mullite, 15 g of feldspar, and 10 g of montmorillonite are directly mixed without using talc, and the other steps are the same.

[0062] Comparative Example 5

[0063] The difference between this comparative example and Example 1 is that in step S5, alcohol ether carboxylate, 2 g of titanate coupling agent, 15 g of isopropanol, and 2 g of Artemisia sphaerocephala Krasch gum are not added, and the other steps are the same.

[0064] Comparative Example 6

[0065] The difference between this comparative example and Example 1 is that in step S6, only the mixture obtained in step S5 is poured into a mold for pre - forming and pressing, and directly sintered at a constant temperature of 1350 °C for 25 min without undergoing gradient heating and subsequent cooling treatment.

[0066] Performance test:

[0067] According to GB / T4740 - 1999 and JC / T2138 - 2012, the mechanical properties and acid - alkali corrosion resistance of the products obtained from each example and comparative example are detected, and the test results are shown in Table 1 below.

[0068] Table 1 Performance test results

[0069]

[0070] It can be seen from the above performance test results that the flexural strength, compressive strength, fracture toughness, and acid - alkali resistance of Examples 1 - 3 are relatively good. Especially, the comprehensive performance of Example 3 is the most prominent. Compared with the examples, in the comparative examples, due to the differences in the composition of each component and the preparation process, their corresponding performance tests are significantly worse than those of the examples. The above experimental results further prove the importance of the technical solutions defined in the present invention for its technical effects.

[0071] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A preparation method of a high-toughness thermoformed natural stone basin, characterized in that, It includes the following steps: S1: Prepare the active composition powder; S2: Prepare the modified kaolin; S3: Prepare the modified bentonite; S4: Prepare the modified additive; S5: By weight, take 25 - 45 parts of the active composition obtained in step S1, 20 - 40 parts of the modified kaolin obtained in step S2, 15 - 25 parts of the modified bentonite obtained in step S3, 5 - 10 parts of the modified additive obtained in step S4, 3 - 6 parts of alcohol ether carboxylate sodium, 2 - 5 parts of titanate coupling agent, 15 - 35 parts of isopropanol and 2 - 6 parts of artemisia sphaerocephala Krasch gum, mix them, and stir at a temperature of 90 - 120 °C for 30 - 50 min; then add 3 - 6 parts of aluminum silicate, 2 - 7 parts of lithium tantalate and 3 - 8 parts of calcium copper titanate, and perform ultrasonic treatment at a power of 200 - 400 W and a frequency of 85 - 95 kHz for 15 - 25 min; subsequently, perform constant temperature refrigeration treatment at a temperature of 0.2 - 0.6 °C for 75 - 95 min to obtain a mixture; S6: Pour the mixture obtained in step S5 into a mold for pre - forming pressing. First, perform constant temperature sintering at a temperature of 1100 - 1250 °C for 15 - 25 min; increase the temperature at a rate of 6 - 10 °C / min to 1350 - 1500 °C and continue constant temperature sintering for 25 - 35 min; decrease the temperature at a rate of 5 - 8 °C / min to 850 - 920 °C and continue constant temperature sintering for 10 - 16 min; then demold, cool to room temperature, and polish to obtain the high - toughness thermoformed perfect stone basin; The preparation process of the active composition powder described in step S1 is as follows: Grind 10 - 20 parts of wollastonite, 5 - 10 parts of ultra - white sand, 3 - 8 parts of feldspar and 2 - 7 parts of diopside to a particle size of 80 - 100 nm, and perform constant temperature steam treatment at a temperature of 280 - 300 °C for 8 - 12 min; decrease the temperature at a rate of 8 - 10 °C / min to 105 - 110 °C and continue constant temperature steam treatment for 15 - 22 min; then perform microwave treatment at a power of 200 - 230 W for 5 - 10 min, perform microwave treatment at a power of 560 - 600 W for 10 - 15 min, and perform microwave treatment at a power of 400 - 430 W for 12 - 18 min to obtain the active composition powder; The preparation process of the modified kaolin described in step S2 is as follows: Crush the kaolin to a particle size of 5 - 10 μm, add a nitric acid aqueous solution with a mass fraction of 20 - 35% according to a solid - liquid ratio of 1 g:5 - 8 ml, stir evenly, perform magnetization treatment under a magnetic field intensity of 2.2 - 2.8 T for 8 - 16 min, and dry at a temperature of 130 - 150 °C for 25 - 35 min to obtain the modified kaolin; The preparation process of the modified bentonite described in step S3 is as follows: Add bentonite to an ethanol aqueous solution with a mass fraction of 25 - 35% according to a solid - liquid ratio of 1 g:3 - 7 ml, stir evenly, perform constant temperature at a temperature of 135 - 145 °C for 8 - 12 min, increase the temperature at a rate of 2 - 5 °C / min to 220 - 240 °C and continue constant temperature for 30 - 40 min, cool to room temperature, immerse it in an acetic acid aqueous solution with a mass fraction of 10% - 15% and stir evenly, and dry at a temperature of 100 - 120 °C for 35 - 45 min to obtain the modified bentonite.

2. The preparation method of a high-toughness thermoformed Zhen stone basin according to claim 1, characterized in that, The preparation process of the active composition powder is as follows: Grind 15 parts of wollastonite, 8 parts of ultra-white sand, 6 parts of feldspar, and 5 parts of diopside to a particle size of 80 - 100 nm, and perform isothermal steam treatment at a temperature of 290 °C for 10 min; cool down to 108 °C at a rate of 9 °C / min and continue isothermal steam treatment for 18 min; then perform microwave treatment at a power of 220 W for 7 min, microwave treatment at a power of 580 W for 12 min, and microwave treatment at a power of 420 W for 15 min to obtain the active composition powder.

3. The preparation method of a high-toughness thermoformed Zhen stone basin according to claim 2, characterized in that, The preparation process of the modified kaolin is as follows: Crush the kaolin to a particle size of 5 - 9 μm, add an aqueous nitric acid solution with a mass fraction of 30% according to a solid-liquid ratio of 1 g:7 ml, stir evenly, perform magnetization treatment under a magnetic field strength of 2.5 T for 14 min, and dry at a temperature of 140 °C for 30 min to obtain the modified kaolin.

4. The preparation method of a high-toughness thermoformed natural stone basin according to claim 3, characterized in that, The preparation process of the modified bentonite is as follows: Add bentonite to an aqueous ethanol solution with a mass fraction of 30% according to a solid-liquid ratio of 1 g:5 ml, stir evenly, keep it at a constant temperature of 140 °C for 10 min, heat it to 230 °C at a rate of 4 °C / min and continue to keep it at a constant temperature for 35 min, cool it to room temperature, immerse it in an aqueous acetic acid solution with a mass fraction of 12%, stir evenly, and dry at a temperature of 110 °C for 40 min to obtain the modified bentonite.

5. The preparation method of a highly tough thermoformed Zhen stone basin according to claim 4, characterized in that, The preparation process of the modifying agent in step S4 is as follows: By weight, take 45 - 75 parts of anorthite, 25 - 35 parts of mullite, 10 - 20 parts of montmorillonite, and 1 - 3 parts of talc, mix them evenly in a ball mill; after drying, load them into a mold, heat it to 1300 - 1500 °C at a rate of 5 - 10 °C / min, and keep the temperature for reaction for 35 - 45 min to obtain the modifying agent.

6. The preparation method of a high-toughness thermoformed Zhen stone basin according to claim 5, characterized in that, Step S5 is as follows: By weight, take 40 parts of the active composition obtained in step S1, 35 parts of the modified kaolin obtained in step S2, 22 parts of the modified bentonite obtained in step S3, 8 parts of the modifying agent obtained in step S4, 5 parts of alcohol ether carboxylate, 4 parts of titanate coupling agent, 20 parts of isopropanol, and 4 parts of Artemisia sphaerocephala Krasch. gum, mix them, and stir at a temperature of 110 °C for 45 min; then add 5 parts of aluminum silicate, 5 parts of lithium tantalate, and 6 parts of calcium copper titanate, and perform ultrasonic treatment at a power of 350 W and a frequency of 92 kHz for 22 min; then perform constant temperature refrigeration treatment at a temperature of 0.4 °C for 80 min to obtain a mixed material.

7. The preparation method of a highly tough thermoformed Zhen stone basin according to claim 6, characterized in that, Step S6 is as follows: Pour the mixed material obtained in step S5 into a mold for preforming and pressing, first perform isothermal sintering at a temperature of 1200 °C for 20 min; heat it to 1480 °C at a rate of 8 °C / min and continue isothermal sintering for 28 min; cool it to 880 °C at a rate of 6 °C / min and continue isothermal sintering for 12 min.

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