1. The anti-seepage glazed inner wall brick is characterized by comprising a green brick, a water-proof base material and a surface glaze, wherein the green brick comprises the following raw materials in parts by weight: 1^#8-10 parts of clay 2^#5-7 parts of clay 3^#Clay or 4^#11-13 parts of clay 1^#13-14 parts of porcelain sand, 2^#12-14 parts of porcelain sand, 3^#11-13 parts of porcelain sand, 8-9 parts of limestone, 8.5-9.5 parts of wollastonite and 0.3-0.5 part of additive; the overglaze comprises the following raw materials in parts by weight: 270-75 parts of frit # s, 720-25 parts of frit # s, 5-8 parts of kaolin, 0.2 part of sodium tripolyphosphate and 0.07 part of sodium carboxymethylcellulose.

2. The impermeable glazed inner wall tile of claim 1, wherein the water-proof substrate comprises the following raw materials in parts by weight: 40-70 parts of frit, 10-20 parts of quartz, 10-20 parts of feldspar and 10-15 parts of clay.

3. The impermeable glazed inner wall tile of claim 2, wherein the water-proof substrate comprises the following raw materials in parts by weight: 58 parts of frit, 15 parts of quartz, 15 parts of feldspar and 12 parts of clay.

4. The impermeable glazed interior wall tile of claim 2, wherein the frit comprises the following raw materials and parts by weight: 16-20 parts of boric acid, 7-9 parts of limestone, 5-10 parts of titanium oxide, 3-6 parts of zinc oxide and 2-4 parts of lithium carbonate.

5. The impermeable glazed interior wall tile of claim 4, wherein the frit comprises the following raw materials and parts by weight: 18 parts of boric acid, 8 parts of limestone, 6 parts of titanium oxide, 5 parts of zinc oxide and 3 parts of lithium carbonate.

6. A process for the production of an impermeable glazed inner wall tile according to any one of claims 1 to 5, comprising the following steps:

s1, mixing the frit raw materials according to the formula, melting at 1550-1600 ℃, water-quenching to obtain a frit with the diameter of 1-3 mm, adding quartz, feldspar and clay, adding water, and ball-milling for 10-11 hours to obtain a water-proof substrate;

s2, taking a formula amount of overglaze raw material, mixing the frit #2 raw material and the frit #7 raw material, melting at 1550-1600 ℃, water-quenching to obtain a frit with the diameter of 1-3 mm, adding kaolin, sodium tripolyphosphate and sodium carboxymethylcellulose, adding water, and ball-milling for 8-9 hours to obtain overglaze;

s3, adding raw materials of the green brick into a ball mill according to a ratio, adding water for ball milling for 10-12 hours to obtain slurry, performing spray granulation on the slurry to obtain powder, performing compression molding on the powder, wherein the molding pressure is 280bar, the molding frequency is 11 times/min, drying the green brick into a dry brick by adopting a drying kiln at 150-200 ℃, the drying period is 25min, and performing biscuit firing and sorting to obtain the green brick;

s4, distributing the water-proof base material obtained in the step S1 on the surface of the green brick obtained in the step S3, drying, distributing the overglaze obtained in the step S2 on the surface of the green brick on which the water-proof base material is distributed, and printing, firing, grading and packaging through a rubber roller to obtain the anti-seepage glazed inner wall brick.

7. The process for producing an anti-seepage glazed inner wall tile as claimed in claim 6, wherein the water-proof base material of step S1 has a 250 mesh sieve residue of 0.2-0.3%, a flow rate of 35-45S/100 mL, and a density of 1.80-1.83 g/cm³The water content is 33-35%.

8. The process for producing an anti-seepage glazed interior wall tile of claim 6, wherein the glaze of step S2 has a 250 mesh screen residue of 0.2-0.3%, a flow rate of 40-50S/100 mL, and a density of 1.83-1.86 g/cm³The water content is 30-33%.

9. The process for manufacturing an impermeable glazed interior wall tile of claim 6, wherein said slurry of step S3 has a moisture content of: 30-32%, and the fineness of the slurry: the balance of a 250-mesh sieve is 2-3%, and the slurry fluidity is as follows: 40-50 s/100mL, slurry density: 1.80-1.85 g/cm³。

10. The process for manufacturing an impermeable glazed interior wall tile according to claim 6, wherein the powder material of step S3 has a moisture content: 7-7.5%, particle size distribution: 30-40% of 40 meshes; 35-45% of 60 meshes; 10-15% of 80 meshes; 180 meshes is less than or equal to 3 percent.

Background

The glazed inner wall tile has the advantages of smooth glaze, fashionable decoration and the like, so that the glazed inner wall tile plays an important role in kitchen and bathroom decoration. Because the product has higher water absorption rate and less compact green body structure, the brick surface can be penetrated with different colors because domestic sewage and cement precipitate continuously permeate into the brick body from the bottom surface of the brick blank in the using process and permeate through the ground coat, and although the ground coat has certain covering capacity for the different colors, the ground coat can not resist a great amount of sewage accumulation after a long time, so that elegant and gorgeous brick surfaces have the phenomena of color change, darkening, watermarks and the like, and the kitchen and toilet decoration effect is seriously influenced.

In order to eliminate the hidden troubles and meet the requirements of consumers, the problem of water permeability and color change of glazed tiles needs to be solved, wherein the key is to radically reform the ground glaze. The ground glaze not only has the function of promoting the combination of the blank glaze, but also has strong waterproof, oil-proof and antifouling capabilities, a waterproof layer is formed between the blank body and the overglaze, the invasion of sewage and dirt is blocked, and the common problems of watermark permeation, color change, darkness and the like of the wall tiles in the common kitchen and toilet are effectively solved. The invention aims to develop a novel waterproof material, which has complete impermeability and super-strong covering capability to water and water-soluble substances, replaces ground coat among blank coats, and achieves the aims of preventing water, oil and dirt from permeating a brick body, keeping the surface color of a product consistent and constantly refreshing. The invention is completed according to the plan after the exploration and the improvement of related personnel, which is a new technology and a product in China at present, and compared with the waterproof glazed inner wall brick in the current market, the invention is improved in technical level and product quality.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide an anti-seepage glazed inner wall brick and a production process thereof. The anti-seepage glazed inner wall brick body provided by the invention has the advantages of extremely strong anti-seepage capability and extremely good pollution resistance, can effectively prevent the pollution of sewage, dirty oil and sludge, is durable and is new for a long time. The product of the invention has the advantages of compactness, high strength, and good glaze cracking resistance and thermal shock resistance.

The technical scheme of the invention is as follows:

an anti-seepage glazed inner wall brick comprises a green brick, a water-proof base material and a glaze, wherein the green brick comprises the following raw materials in parts by weight: 1^#8-10 parts of clay 2^#5-7 parts of clay 3^#Clay or 4^#11-13 parts of clay 1^#13-14 parts of porcelain sand, 2^#12-14 parts of porcelain sand, 3^#11-13 parts of porcelain sand, 8-9 parts of limestone, 8.5-9.5 parts of wollastonite and 0.3-0.5 part of additive; the overglaze comprises the following raw materials in parts by weight: 270-75 parts of frit # s, 720-25 parts of frit # s, 5-8 parts of kaolin, 0.2 part of sodium tripolyphosphate and 0.07 part of sodium carboxymethylcellulose.

Further, the waterproof base material comprises the following raw materials in parts by weight: 40-70 parts of frit, 10-20 parts of quartz, 10-20 parts of feldspar and 10-15 parts of clay.

Further, the waterproof base material comprises the following raw materials in parts by weight: 58 parts of frit, 15 parts of quartz, 15 parts of feldspar and 12 parts of clay.

Further, the frit comprises the following raw materials in parts by weight: 16-20 parts of boric acid, 7-9 parts of limestone, 5-10 parts of titanium oxide, 3-6 parts of zinc oxide and 2-4 parts of lithium carbonate.

Further, the frit comprises the following raw materials in parts by weight: 18 parts of boric acid, 8 parts of limestone, 6 parts of titanium oxide, 5 parts of zinc oxide and 3 parts of lithium carbonate.

The production process of the impermeable glazed inner wall brick comprises the following steps:

s1, mixing the frit raw materials according to the formula, melting at 1550-1600 ℃, water-quenching to obtain a frit with the diameter of 1-3 mm, adding quartz, feldspar and clay, adding water, and ball-milling for 10-11 hours to obtain a water-proof substrate;

s2, taking a formula amount of overglaze raw material, mixing the frit #2 raw material and the frit #7 raw material, melting at 1550-1600 ℃, water-quenching to obtain a frit with the diameter of 1-3 mm, adding kaolin, sodium tripolyphosphate and sodium carboxymethylcellulose, adding water, and ball-milling for 8-9 hours to obtain overglaze;

s3, adding raw materials of the green brick into a ball mill according to a ratio, adding water for ball milling for 10-12 hours to obtain slurry, performing spray granulation on the slurry to obtain powder, performing compression molding on the powder, wherein the molding pressure is 280bar, the molding frequency is 11 times/min, drying the green brick into a dry brick by adopting a drying kiln at 150-200 ℃, the drying period is 25min, and performing biscuit firing and sorting to obtain the green brick;

s4, distributing the water-proof base material obtained in the step S1 on the surface of the green brick obtained in the step S3, drying, distributing the overglaze obtained in the step S2 on the surface of the green brick on which the water-proof base material is distributed, and printing, firing, grading and packaging through a rubber roller to obtain the anti-seepage glazed inner wall brick.

Further, in the step S1, the sieve residue of the water-proof base material with a sieve of 250 meshes is 0.2-0.3%, the flow rate is 35-45S/100 mL, and the density is 1.80-1.83 g/cm³The water content is 33-35%.

Further, the overglaze of the step S2 has a sieve residue of 0.2-0.3% with a sieve of 250 meshes, a flow rate of 40-50S/100 mL, and a density of 1.83-1.86 g/cm³The water content is 30-33%.

Further, the slurry of step S3 has the following moisture: 30-32%, and the fineness of the slurry: the balance of a 250-mesh sieve is 2-3%, and the slurry fluidity is as follows: 40-50 s/100mL, slurry density: 1.80-1.85 g/cm³。

Further, the moisture content of the powder material in the step S3 is: 7-7.5%, particle size distribution: 30-40% of 40 meshes; 35-45% of 60 meshes; 10-15% of 80 meshes; 180 meshes is less than or equal to 3 percent.

The anti-seepage glazed inner wall brick provided by the invention is a glazed inner wall brick with the water absorption rate of 15%, and is produced by adding a layer of 'water-proof base material' new material between a blank body and a surface glaze to replace a ground glaze. The special function of the water-proof cleaning agent is utilized to be integrally matched with the blank and the glaze, so that the water-proof cleaning function of the product is formed. The main technical characteristics are as follows:

1. the waterproof substrate has the functions of strong melting medium, high opalescence and easy infiltration, and consists of a frit and a raw material. The frit formula is introduced with strong flux components such as limestone and boric acid, and titanium oxide as an opacifier, and the melting property of high initial melting point and proper high-temperature viscosity is adjusted. The frit can melt raw materials such as quartz, feldspar and the like in a water-proof base material to form high-opalescence crystals, so that the frit becomes a very compact semi-molten material; the waterproof base material can also soak the green body, and mutually permeate the contact surface of the green body to block pores of the green body; the glaze layer, the waterproof substrate and the green body can be firmly combined by interacting with the overglaze and allowing the components to enter an interface; various liquids permeated from the back of the blank body are completely blocked, so that the facing brick achieves the effect of water isolation and cleanness in the construction and use processes. The frit and the glaze have reasonable raw materials, high whiteness and strong opalescence, so the waterproof substrate has strong covering capacity on the blank.

2. The green body has the characteristics of compactness and high strength

In order to improve the water-resisting property of the green body, the raw materials of the green body formula are selected and designed, and the proportion of the sintering raw materials is strengthened under the condition of ensuring low shrinkage rate of the green body. The invention adopts wollastonite with good fluxing action, improves the compactness of the green body and enhances the mechanical strength of the brick body, and achieves the purpose of water resistance by matching with the flux action of a water-resistant base material.

3. The sintering process has the characteristic of strong adaptability

Wollastonite is a good material for low-temperature quick sintering, but because the sintering range is relatively small, in order to well solve the problem, the invention makes corresponding adjustment on the sintering process according to the wollastonite sintering characteristic except by adjusting the formula, strictly controls the temperature difference and the time of a high-temperature section, adapts to the requirement of blank glaze sintering, and ensures the sintering quality.

Compared with the prior art, the invention has the following advantages:

(1) the anti-seepage glazed inner wall brick body provided by the invention has the advantages of extremely strong anti-seepage capability and extremely good pollution resistance, can effectively prevent the pollution of sewage, dirty oil and sludge, is durable and is new for a long time.

(2) The anti-seepage glazed inner wall brick provided by the invention is compact, high in strength and good in anti-glaze cracking performance and thermal shock resistance.

Detailed Description

The present invention is further described in the following description of the specific embodiments, which is not intended to limit the invention, but various modifications and improvements can be made by those skilled in the art according to the basic idea of the invention, within the scope of the invention, as long as they do not depart from the basic idea of the invention.

The chemical composition of the raw materials used in the following examples of the present invention is shown in table 1.

Table 1: chemical composition of the raw materials

In the following examples of the present invention, a high temperature biscuit firing and low temperature glaze firing secondary firing process is adopted, and the parameters are shown in table 2. The biscuiting parameters are shown in Table 3, and the glaze firing parameters are shown in Table 4.

Table 2: biscuiting and glaze firing parameters

Table 3: parameters of biscuit firing

Site (m)	10	20	30	40	50	60	70	80	90	100	110	120	130
														Temperature (. degree.C.)	175	465	710	835	960	1050	1150	1035	615	520	385	250	185

Table 4: parameters of glaze firing

Site (m)	10	20	30	40	50	60	70	80	90	100	110	120	130
														Temperature (. degree.C.)	205	360	485	710	825	930	1065	1110	1080	595	450	305	190

Embodiment 1. anti-seepage glazed inner wall tile

The anti-seepage glazed inner wall brick comprises a green brick, a water-proof base material and a glaze, wherein the green brick comprises the following raw materials in parts by weight: 1^#8 portions of clay 2^#5 parts of clay, 3^#Clay 11 parts, 1^#Porcelain sand 13 parts, 2^#12 parts of porcelain sand, 3^#11 parts of porcelain sand, 8 parts of limestone, 8.5 parts of wollastonite and 0.3 part of additive; the additive consists of sodium metasilicate pentahydrate and sodium sulfate according to the mass ratio of 1: 3; the overglaze comprises the following raw materials in parts by weight: 270 parts of frit #, 720 parts of frit # s, 5 parts of kaolin, 0.2 part of sodium tripolyphosphate and 0.07 part of sodium carboxymethylcellulose; the frit #2 comprises the following raw materials in parts by weight: 10 parts of barium sulfate, 1 part of kaolin, 18 parts of calcium carbonate, 6 parts of quartz, 1 part of calcined talc and 15 parts of potassium feldspar; the frit #7 comprises the following raw materials in parts by weight: 24 parts of albite, 5 parts of spodumene, 7 parts of sodium carbonate and 4 parts of kaolin.

The waterproof base material comprises the following raw materials in parts by weight: 40 parts of frit, 10 parts of quartz, 10 parts of feldspar and 10 parts of clay; the frit comprises the following raw materials in parts by weight: 16 parts of boric acid, 7 parts of limestone, 5 parts of titanium oxide, 3 parts of zinc oxide and 2 parts of lithium carbonate.

The production process of the anti-seepage glazed inner wall brick comprises the following steps:

s1, mixing the frit raw materials, melting at 1550 ℃, water quenching to obtain a frit with a diameter of 1mm, adding quartz, feldspar and clay, adding water, and ball-milling for 10 hours to obtain the waterproof substrate, wherein the waterproof substrate is prepared by the steps of mixing the frit raw materials, milling with water, and grinding with waterThe material has a 250-mesh sieve residue of 0.3%, a flow rate of 35s/100mL, and a density of 1.83g/cm³The water content is 33 percent;

s2 taking a formula amount of overglaze raw material, mixing the frit #2 raw material and the frit #7 raw material, melting at 1550 ℃, water quenching to obtain a frit with the diameter of 1mm, adding kaolin, sodium tripolyphosphate and sodium carboxymethyl cellulose, adding water, ball milling for 8 hours to obtain overglaze, wherein the overglaze has the screen residue of 0.3 percent on a 250-mesh screen, the flow rate of 40S/100mL, and the density of 1.86g/cm³The water content is 30 percent;

s3, adding the raw materials of the green brick into a ball mill according to the proportion, adding water for ball milling for 10 hours to obtain slurry, wherein the slurry has the water content: 30%, fineness of slurry: the balance of a 250-mesh sieve is 3%, and the slurry fluidity is as follows: 40s/100mL, slurry density: 1.85g/cm³And spraying and granulating the slurry to obtain powder, wherein the powder contains the following components in parts by weight: 7%, particle size distribution: 40 percent of 40 meshes; 45 percent of 60 meshes; 80 meshes of 14 percent; 180 meshes and 1 percent, pressing and molding the powder, wherein the molding pressure is 280bar, the molding frequency is 11 times/min, drying the green blank into a dry blank by adopting a drying kiln at the temperature of 150 ℃, the drying period is 25min, biscuit firing and sorting to obtain a brick blank;

s4 applying the water-proof base material obtained in the step S1 on the surface of the green brick obtained in the step S3, wherein the glazing amount is as follows: 90g (300 mm. times.450 mm brick), drying, and then applying the overglaze obtained in step S2 on the surface of the green brick on which the water-proof base material is applied, the applying amount: 150g (300mm multiplied by 450mm brick), and then printing, sintering, grading and packaging are carried out by rubber rollers, thus obtaining the anti-seepage glazed inner wall brick.

Embodiment 2, anti-seepage glazed inner wall tile

The anti-seepage glazed inner wall brick comprises a green brick, a water-proof base material and a glaze, wherein the green brick comprises the following raw materials in parts by weight: 1^#Clay 10 parts, 2^#Clay 7 parts, 4^#Clay 13 parts, 1^#14 parts of porcelain sand, 2^#14 parts of porcelain sand, 3^#13 parts of porcelain sand, 9 parts of limestone, 9.5 parts of wollastonite and 0.5 part of additive; the additive consists of sodium metasilicate pentahydrate and sodium sulfate according to the mass ratio of 1: 3; the overglaze comprises the following raw materials in parts by weight: 275 parts of clinker # and 725 parts of clinker # and 8 parts of kaolin and tripolyphosphoric acid0.2 part of sodium and 0.07 part of sodium carboxymethyl cellulose; the frit #2 comprises the following raw materials in parts by weight: 13 parts of barium sulfate, 5 parts of kaolin, 25 parts of calcium carbonate, 7 parts of quartz, 3 parts of calcined talc and 20 parts of potassium feldspar; the frit #7 comprises the following raw materials in parts by weight: 27 parts of albite, 8 parts of spodumene, 12 parts of sodium carbonate and 6 parts of kaolin.

The waterproof base material comprises the following raw materials in parts by weight: 70 parts of frit, 20 parts of quartz, 20 parts of feldspar and 15 parts of clay; the frit comprises the following raw materials in parts by weight: 20 parts of boric acid, 9 parts of limestone, 10 parts of titanium oxide, 6 parts of zinc oxide and 4 parts of lithium carbonate.

The production process of the anti-seepage glazed inner wall brick comprises the following steps:

s1, taking a water-proof base material raw material with a formula amount, mixing the frit raw materials, melting at 1600 ℃, performing water quenching to obtain a frit with the diameter of 3mm, adding quartz, feldspar and clay, adding water, performing ball milling for 11 hours to obtain the water-proof base material, wherein the 250-mesh sieve residue of the water-proof base material is 0.2%, the flow rate is 45S/100mL, and the density is 1.80g/cm³The water content is 35 percent;

s2 taking a formula amount of overglaze raw material, mixing the frit #2 raw material and the frit #7 raw material, melting at 1600 ℃, water quenching to obtain a frit with a diameter of 3mm, adding kaolin, sodium tripolyphosphate and sodium carboxymethyl cellulose, adding water, ball milling for 9h to obtain overglaze, wherein the overglaze has a 250-mesh sieve residue of 0.2%, a flow rate of 50S/100mL and a density of 1.83g/cm³The water content is 33 percent;

s3, adding the raw materials of the green brick into a ball mill according to the proportion, adding water for ball milling for 12 hours to obtain slurry, wherein the slurry has the water content: 32%, fineness of slurry: the balance of a 250-mesh sieve is 2%, and the slurry fluidity is as follows: 50s/100mL, slurry density: 1.80g/cm³And spraying and granulating the slurry to obtain powder, wherein the powder contains the following components in parts by weight: 7.5%, grain composition: 37 percent of 40 meshes; 45 percent of 60 meshes; 80 meshes of 15 percent; 180 meshes and 3 percent, pressing and molding the powder, wherein the molding pressure is 280bar, the molding frequency is 11 times/min, drying the green blank into a dry blank by adopting a drying kiln at the temperature of 200 ℃, the drying period is 25min, biscuit firing and sorting to obtain a brick blank;

s4 applying the water-resistant base material obtained in step S1 on the surface of the green brick obtained in step S3 in an amount of 100g (300mm × 450mm brick), drying, and applying the overglaze obtained in step S2 on the surface of the green brick with the water-resistant base material applied thereto in an amount of: 160g (300mm multiplied by 450mm brick), and then through rubber roller printing, firing, grading and packaging, the impermeable glazed inner wall brick is obtained.

Embodiment 3. anti-seepage glazed inner wall tile

The anti-seepage glazed inner wall brick comprises a green brick, a water-proof base material and a glaze, wherein the green brick comprises the following raw materials in parts by weight: 1^#9 portions of clay 2^#6 parts of clay, 3^#12 portions of clay 1^#Porcelain sand 13 parts, 2^#Porcelain sand 13 parts, 3^#12 parts of porcelain sand, 8.5 parts of limestone, 9 parts of wollastonite and 0.4 part of additive; the additive consists of sodium metasilicate pentahydrate and sodium sulfate according to the mass ratio of 1: 3; the overglaze comprises the following raw materials in parts by weight: 272 parts of frit # 272, 722 parts of frit # 722, 6 parts of kaolin, 0.2 part of sodium tripolyphosphate and 0.07 part of sodium carboxymethylcellulose; the frit #2 comprises the following raw materials in parts by weight: 12 parts of barium sulfate, 2 parts of kaolin, 21 parts of calcium carbonate, 6 parts of quartz, 2 parts of calcined talc and 17 parts of potassium feldspar; the frit #7 comprises the following raw materials in parts by weight: 25 parts of albite, 6 parts of spodumene, 9 parts of sodium carbonate and 5 parts of kaolin.

The waterproof base material comprises the following raw materials in parts by weight: 58 parts of frit, 15 parts of quartz, 15 parts of feldspar and 12 parts of clay; the frit comprises the following raw materials in parts by weight: 18 parts of boric acid, 8 parts of limestone, 6 parts of titanium oxide, 5 parts of zinc oxide and 3 parts of lithium carbonate.

The production process of the anti-seepage glazed inner wall brick comprises the following steps:

s1, taking a water-proof base material raw material with a formula amount, mixing the frit raw materials, melting at 1580 ℃, performing water quenching to obtain a frit with the diameter of 2mm, adding quartz, feldspar and clay, adding water, performing ball milling for 10.5 hours to obtain the water-proof base material, wherein the 250-mesh sieve residue of the water-proof base material is 0.25%, the flow rate is 40S/100mL, and the density is 1.82g/cm³The water content is 34%;

s2 taking a formula amount of overglaze raw material, mixing the frit #2 raw material and the frit #7 raw material, melting at 1580 ℃, water quenching to obtain a frit with the diameter of 2mm, adding kaolin, sodium tripolyphosphate and sodium carboxymethyl cellulose, adding water, ball milling for 8.5 hours to obtain overglaze, wherein the screen allowance of the overglaze with a 250-mesh sieve is 0.25%, the flow rate is 48S/100mL, and the density is 1.85g/cm³The water content is 32%;

s3, adding the raw materials of the green brick into a ball mill according to the proportion, adding water for ball milling for 11 hours to obtain slurry, wherein the slurry has the water content: 31%, pulp fineness: the balance of a 250-mesh sieve is 2.5%, and the slurry fluidity is as follows: 46s/100mL, slurry density: 1.82g/cm³And spraying and granulating the slurry to obtain powder, wherein the powder contains the following components in parts by weight: 7.2%, grain composition: 40 meshes and 39 percent; 60 meshes 44%; 80 meshes of 15 percent; 180 meshes and 2 percent, pressing and molding the powder, wherein the molding pressure is 280bar, the molding frequency is 11 times/min, drying the green blank into a dry blank by adopting a drying kiln at the temperature of 170 ℃, the drying period is 25min, biscuit firing and sorting to obtain a brick blank;

s4 applying the water-proof base material obtained in the step S1 on the surface of the green brick obtained in the step S3, wherein the glazing amount is as follows: 95g (300mm × 450mm brick), drying, and then applying the overglaze obtained in step S2 on the surface of the green brick on which the water-proof base material is applied, the applying amount: 155g (300mm multiplied by 450mm brick), and then printing, sintering, grading and packaging are carried out by rubber rollers, thus obtaining the anti-seepage glazed inner wall brick.

Test example one, anti-permeation effect test:

a plastic cylinder with the diameter of 30mm and the height of 30mm is placed on the back surface of a green brick of the anti-seepage glazed inner wall brick, the periphery of the green brick is sealed, then methyl blue aqueous solution with the concentration of 1g/500mL is injected from an opening, the liquid level is 30mm, after standing for 30min, the methyl blue aqueous solution is poured out, the green brick glaze is observed visually, and whether traces appear or not is judged. The test result shows that the glaze surface has no watermark after standing for 30 minutes, which shows that the anti-seepage effect of the anti-seepage glazed inner wall brick of the invention is excellent and reaches a very high level.

Test example two, stain resistance test:

reference is made to GB/T3810.14-2016 section 14 of the ceramic tile testing method: determination of contamination resistance the contamination resistance of the anti-permeation glazed inner wall tile manufactured according to the present invention was tested. The test result shows that the anti-fouling grade of the anti-seepage glazed inner wall brick prepared by the invention reaches the level of 5, which shows that the anti-seepage glazed inner wall brick has very good anti-fouling performance.