Spark-proof ceramic and its body slip, preparation method, use and ceramic tile

Abstract

A kind of anti-spark ceramic and its body glaze, preparation method, use and ceramic tile, the body glaze is characterized in that, by mass fraction, its raw materials include: 3-12 parts of light calcium powder, 1-10 parts of magnesium oxide, 8-17 parts of dolomite powder, 6-12 parts of sodium sand, 6-12 parts of potassium sand, 0.5-6 parts of alumina and 10-25 parts of pottery clay, can also add tin dioxide, diantimony trioxide and zinc oxide as slurry conductive nanomaterial, can adjust both anti-spark property and anti-static property of ceramic to the best interval simultaneously.Anti-spark ceramic is provided with a body glaze layer prepared from the above-mentioned body glaze of anti-spark ceramic.The preparation method is used to prepare the above-mentioned anti-spark ceramic.The present application can solve the problem of friction impact sparking of other floor materials in the prior art, and also solve the problem that the anti-spark performance and anti-static performance of ceramic cannot be simultaneously achieved.

Description

Technical Field

[0001] This invention relates to the field of ceramic tiles, and more particularly to a spark-resistant ceramic, its glaze slurry for the body, preparation method, uses, and ceramic tile. Background Technology

[0002] When existing metal materials or other objects collide or rub against the ground, sparks can easily be generated at the point of contact. If the environment is flammable or explosive, these sparks can cause fires or explosions. Therefore, spark-proof ground can further prevent the accumulation of flammable materials during the production process. At the same time, static electricity prevention is equally important in chemical, military, or pharmaceutical workshops. Static electricity is a static charge that is generated by friction between different objects. Static electricity can not only cause random malfunctions, misoperations, or calculation errors in various electronic devices, but may also lead to the breakdown and destruction of certain components, such as CMOS, MOS circuits, and bipolar circuits. Therefore, such ground requires a high level of anti-static and explosion-proof protection.

[0003] In order to improve the anti-static and explosion-proof performance of the ground, existing technology provides floor tiles with anti-static and spark-proof functions. The structure of the floor tile is as follows: it includes a bottom shell with an approximately rectangular shape, which is made of stainless steel and can transfer static charge. Foamed cement is filled inside the bottom shell to ensure the overall structural strength of the bottom shell. A base layer is set on the upper side of the bottom shell, which is made of wood or ceramic tile. A surface layer is then set on the upper side of the base layer, which is made of PVC material. The aforementioned antistatic floor tiles have the following problems: First, the base shell is relatively thick, generally around 30mm, which occupies a lot of space during installation, reducing the ceiling height. Second, the tile uses a three-layer structure: base shell, base layer, and surface layer. Two layers of adhesive are needed to bond the base shell to the base layer and the surface layer, respectively. These adhesives contain volatile pollutants such as formaldehyde and toluene, increasing the safety risks associated with using the tiles. Finally, the surface layer uses PVC material to prevent static electricity. While this method offers some antistatic effect compared to traditional tiles, the effect is minimal and poor. Summary of the Invention

[0004] The purpose of this invention is to provide a spark-resistant glaze slurry for ceramic blanks, which is prepared by mixing light calcium carbonate powder, magnesium oxide, dolomite powder, sodium sand, potassium sand, aluminum oxide and clay to obtain a glaze slurry that can be applied to the surface of the blank. The glaze slurry has spark-resistant properties on the surface of the blank.

[0005] The present invention also proposes a spark-resistant ceramic, wherein the surface of which is coated with the above-mentioned spark-resistant ceramic body glaze layer is obtained by applying the glaze slurry to the ceramic body.

[0006] The present invention also proposes a method for preparing spark-resistant ceramics, which is used to prepare the above-mentioned spark-resistant ceramics.

[0007] The present invention also proposes a ceramic tile, which is the aforementioned spark-resistant ceramic.

[0008] The present invention also proposes the use of a glaze slurry for the body in the preparation of high-temperature resistant, antistatic, and spark-resistant ceramics.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] A spark-resistant glaze slurry for ceramic blanks, comprising, by weight, the following raw materials: 3-12 parts light calcium carbonate powder, 1-10 parts magnesium oxide, 8-17 parts dolomite powder, 6-12 parts sodium sand, 6-12 parts potassium sand, 0.5-6 parts alumina, and 10-25 parts clay.

[0011] Preferably, by mass, the raw materials include: 3-12 parts of light calcium carbonate powder, 1-10 parts of magnesium oxide, 8-17 parts of dolomite powder, 6-12 parts of sodium sand, 6-12 parts of potassium sand, 0.5-6 parts of aluminum oxide, 10-25 parts of clay and conductive nanomaterials, wherein the conductive nanomaterials include: 4-10 parts of tin dioxide, 1-8 parts of antimony trioxide and 1-12 parts of zinc oxide.

[0012] A spark-resistant ceramic includes: a body and a glaze layer for the body; the glaze layer for the body is disposed on the surface of the body.

[0013] The glaze layer for the body is made from the above-mentioned spark-resistant ceramic body glaze slurry.

[0014] More preferably, the raw materials of the blank body, by mass parts, include: 5-40 parts of clay, 60-95 parts of potassium sodium feldspar powder, and no more than 5 parts of conductive nanomaterials.

[0015] Preferably, the conductive nanomaterial comprises, by mass percentage, 85-100% of a primary conductive material and the remainder a secondary conductive material;

[0016] The main conductive material includes one or more combinations of iron oxide, chromium oxide and cobalt oxide;

[0017] The secondary conductive material includes one or more combinations of manganese oxide and nickel oxide.

[0018] More preferably, the conductive nanomaterial comprises, by mass percentage: 40-50% iron oxide, 40-50% chromium oxide, 5-15% cobalt oxide, and the balance being a secondary conductive material.

[0019] The secondary conductive materials include manganese oxide and nickel oxide.

[0020] A method for preparing a spark-resistant ceramic, comprising the following steps:

[0021] (1) Take the raw materials of the glaze slurry for the body, add sodium carboxymethyl cellulose, sodium tripolyphosphate and water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0022] (2) Take the raw materials for the blank, mix the clay and potassium sodium feldspar powder, and ball mill until the residue on a 325 mesh sieve is 0.6%-0.8%; then prepare the blank into a blank.

[0023] (3) Apply the glaze slurry to the surface of the body;

[0024] (4) The green body is fired at 1150-1200℃ to produce finished bricks.

[0025] More preferably, in step (2), the raw material of the blank is taken, the clay and potassium sodium feldspar powder are mixed, and the mixture is ball-milled until the residue on a 325-mesh sieve is 0.6%-0.8%. After the conductive nanomaterial is added and mixed evenly, the blank is prepared into a blank.

[0026] A type of ceramic tile, the surface of which is coated with a glaze layer made from a glaze slurry for a ceramic body made of the aforementioned fire-resistant material, or is a type of fire-resistant ceramic, or is prepared by the aforementioned method for preparing fire-resistant ceramic.

[0027] The use of a glaze slurry for ceramic bodies in the preparation of high-temperature resistant, antistatic, and spark-proof ceramics, wherein the glaze slurry for ceramic bodies is the aforementioned spark-proof ceramic glaze slurry for ceramic bodies.

[0028] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0029] 1. This solution provides a spark-resistant glaze slurry for ceramic blanks, which is prepared by mixing light calcium carbonate powder, magnesium oxide, dolomite powder, sodium sand, potassium sand, aluminum oxide and clay to obtain a glaze slurry that can be applied to the surface of the blank. The glaze slurry has spark-resistant properties on the surface of the blank, and there is no need for post-treatment on the surface of the brick, thus solving the problem of sparks caused by friction and impact in other existing flooring materials.

[0030] 2. This solution combines light calcium carbonate powder, magnesium oxide, dolomite powder, sodium sand, potassium sand, alumina, clay, and conductive nanomaterials in a specific ratio. The conductive nanomaterials, composed of tin dioxide, antimony trioxide, and zinc oxide, allow for the simultaneous optimization of both spark resistance and antistatic properties in ceramics. The glaze slurry forms a stable conductive path on the surface of the brick, resulting in high safety performance. The inorganic spark-resistant ceramic provided by this invention has a long service life and meets the requirements for antistatic and spark-resistant applications in flammable and explosive environments such as military, aerospace, and chemical industries, solving the problem of simultaneously achieving both spark resistance and antistatic properties in ceramics. Detailed Implementation

[0031] To facilitate understanding of the present invention, a more complete description is provided below. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

[0032] A spark-resistant glaze slurry for ceramic blanks, comprising, by weight, the following raw materials: 3-12 parts light calcium carbonate powder, 1-10 parts magnesium oxide, 8-17 parts dolomite powder, 6-12 parts sodium sand, 6-12 parts potassium sand, 0.5-6 parts alumina, and 10-25 parts clay.

[0033] This solution provides a spark-resistant glaze slurry for ceramic blanks, which is prepared by mixing light calcium carbonate powder, magnesium oxide, dolomite powder, sodium sand, potassium sand, aluminum oxide and clay to obtain a glaze slurry that can be applied to the surface of the blank. The glaze slurry has spark-resistant properties on the surface of the blank, and there is no need for post-treatment on the surface of the brick. This solves the problem of sparks caused by friction and impact in other existing flooring materials.

[0034] Meanwhile, the glaze slurry used in this scheme can be made with or without conductive nanomaterials as needed. In embodiments without conductive nanomaterials, only spark-resistant ceramics can be formed. Alternatively, the conductive nanomaterials can be applied to the green body containing the conductive nanomaterials, combining with the green body to create a high-temperature resistant, antistatic, and spark-resistant ceramic. In embodiments with conductive nanomaterials, they can be used in conjunction with the green body, with or without conductive nanomaterials, to create a spark-resistant ceramic.

[0035] Sodium sand is a known material, available for random purchase on the market. It generally has a high Na2O content, exceeding 3% (by mass), and can be produced from albite. Potassium sand is also a known material, available for random purchase on the market. It generally has a high K2O content, exceeding 3% (by mass), and can be produced from potassium feldspar.

[0036] Preferably, by mass, the raw materials include: 3-12 parts of light calcium carbonate powder, 1-10 parts of magnesium oxide, 8-17 parts of dolomite powder, 6-12 parts of sodium sand, 6-12 parts of potassium sand, 0.5-6 parts of aluminum oxide, 10-25 parts of clay and conductive nanomaterials, wherein the conductive nanomaterials include: 4-10 parts of tin dioxide, 1-8 parts of antimony trioxide and 1-12 parts of zinc oxide.

[0037] The added conductive nanomaterials can be replaced by known conductive materials with antistatic properties, such as titanium dioxide, antistatic ink, and polyvinyl alcohol. In the optimal embodiment, tin dioxide, antimony trioxide, and zinc oxide are used as the main conductive materials, which enables the spark-resistant ceramic to have excellent spark-resistant properties, excellent antistatic properties, and long-lasting antistatic properties.

[0038] This solution combines light calcium carbonate powder, magnesium oxide, dolomite powder, tin dioxide, antimony trioxide, zinc oxide, sodium sand, potassium sand, alumina, clay, and conductive nanomaterials in a specific ratio, achieving an optimal balance between spark resistance and antistatic properties in ceramics. The glaze slurry forms a stable conductive path on the surface of the ceramic body, resulting in high safety performance. The inorganic spark-resistant ceramic provided by this invention has a long service life and meets the requirements for antistatic and spark-resistant applications in flammable and explosive environments such as military, aerospace, and chemical industries.

[0039] Among these, the spark-resistant property of ceramics refers to their ability to generate electric sparks when their surface rubs against other objects; while antistatic property refers to the electrical conductivity of ceramics. Electrical conductivity has certain requirements regarding resistance; too low a resistance makes it a conductor, while too high a resistance makes it an insulator. This solution can achieve a resistance of 5 × 10⁻⁶. 4 Ω to 1×10 9 Ω, the resistance is suitable.

[0040] A spark-resistant ceramic includes: a body and a glaze layer for the body; the glaze layer for the body is disposed on the surface of the body.

[0041] The glaze layer for the blank is made from a spark-resistant ceramic blank glaze slurry of any of the above embodiments.

[0042] Fire-resistant ceramics are ceramic products, including ceramic tiles, utensils, and bathroom products. Anything made of ceramic material should be covered by this protection.

[0043] The green body can be replaced by a known ceramic green body, which can be made according to any existing green body formula or can be randomly purchased from the market. The raw materials of the green body may or may not contain conductive nanomaterials. In the optimal embodiment, the green body, by weight, contains: 5-40 parts of clay, 60-95 parts of potassium sodium feldspar powder, and no more than 5 parts of conductive nanomaterials.

[0044] This solution preferentially uses clay and potassium-sodium feldspar powder as the main components of the body, resulting in high heat resistance. Conductive nanomaterials are then incorporated into the clay and potassium-sodium feldspar powder, giving the spark-resistant ceramic an anti-static effect. Simultaneously, the clay and potassium-sodium feldspar powder can better support the conductive nanomaterials. When the glaze slurry also carries conductive nanomaterials, a more interconnected conductive network is formed between the ceramic glaze and the body. Thus, this solution solves the problems of sparking and static electricity generation caused by friction and impact in other existing flooring materials.

[0045] Among them, potassium feldspar is a known material, which is a mixture of potassium feldspar and sodium feldspar. Potassium feldspar and sodium feldspar can be artificially mixed or naturally formed. They can be randomly purchased from the market or mixed by oneself. For artificial mixing, the ratio of potassium feldspar to sodium feldspar in potassium feldspar can preferably be 1:(0.01-100). For 60-95 parts of potassium feldspar powder, if the optimal ratio of potassium feldspar to sodium feldspar is 1:1, it is equivalent to "30-45 parts of potassium feldspar powder and 30-45 parts of sodium feldspar powder".

[0046] Preferably, the conductive nanomaterial comprises, by mass percentage, 85-100% of a primary conductive material and the remainder a secondary conductive material;

[0047] The main conductive material includes one or more combinations of iron oxide, chromium oxide and cobalt oxide;

[0048] The secondary conductive material includes one or more combinations of manganese oxide and nickel oxide.

[0049] For the added conductive nanomaterials, they can be replaced by known conductive materials with antistatic properties, such as titanium dioxide, antistatic ink, and polyvinyl alcohol. In the optimal embodiment, iron oxide, chromium oxide, and cobalt oxide are used as the main conductive materials, and trace amounts of manganese oxide and nickel oxide are selected as the secondary conductive materials. This allows the spark-resistant ceramic to possess excellent antistatic properties in addition to its excellent spark-resistant properties. Especially when conductive nanomaterials are added to the glaze slurry, a more interconnected conductive network is formed between the glaze layer and the surface of the body, thereby improving the antistatic ability.

[0050] More preferably, the conductive nanomaterial comprises, by mass percentage: 40-50% iron oxide, 40-50% chromium oxide, 5-15% cobalt oxide, and the balance being a secondary conductive material.

[0051] The secondary conductive materials include manganese oxide and nickel oxide.

[0052] The secondary conductive material can be added or not added in trace amounts as needed. The amount added can be determined as needed. For example, the amount of manganese oxide added can be ≤5%, or ≤4%, or ≤3%, or ≤2%, or ≤1%, or ≤0.1%. The amount of nickel oxide added can be ≤5%, or ≤4%, or ≤3%, or ≤2%, or ≤1%, or ≤0.1%. Alternatively, manganese oxide and nickel oxide can be mixed in a certain ratio, for example, the ratio of manganese oxide to nickel oxide is 1:(0.1-10).

[0053] A method for preparing a spark-resistant ceramic, comprising the following steps:

[0054] (1) Take the raw materials of the glaze slurry for the body, add sodium carboxymethyl cellulose, sodium tripolyphosphate and water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0055] This step can involve adding only light calcium carbonate powder, magnesium oxide, dolomite powder, zinc oxide, sodium sand, potassium sand, aluminum oxide, and clay. Alternatively, conductive nanomaterials can be added to this formula, namely tin dioxide, antimony trioxide, and zinc oxide.

[0056] (2) Take the raw materials for the blank, mix the clay and potassium sodium feldspar powder, and ball mill until the residue on a 325 mesh sieve is 0.6%-0.8%; then prepare the blank into a blank.

[0057] The preparation of the preform is well known, such as well-known dry pressing, wet molding, slurry molding or free mixing molding processes.

[0058] (3) Apply the glaze slurry to the surface of the body;

[0059] (4) The green body is fired at 1150-1200℃ to produce finished bricks.

[0060] Furthermore, the present invention may optionally perform edge grinding, polishing, and knurling treatments on the finished bricks as needed.

[0061] More preferably, in step (2), the raw material of the blank is taken, the clay and potassium sodium feldspar powder are mixed, and the mixture is ball-milled until the residue on a 325-mesh sieve is 0.6%-0.8%. After the conductive nanomaterial is added and mixed evenly, the blank is prepared into a blank.

[0062] The conductive nanomaterial can preferably be added after the raw material is ball-milled. Since the conductive nanomaterial is a nanomaterial, the influence of ball milling on the nanostructure can be avoided, thereby ensuring the stable performance of antistatic properties.

[0063] A kind of ceramic tile, on the surface of which there is a green body glaze layer prepared from the anti-sparking glaze for ceramic green body of any of the above embodiments, or it is an anti-sparking ceramic of any of the above embodiments, or it is prepared by the preparation method of an anti-sparking ceramic of any of the above embodiments.

[0064] Use of a green body glaze in the preparation of a high-temperature resistant, anti-static and anti-sparking ceramic, wherein the green body glaze is an anti-sparking glaze for ceramic green body as described above.

[0065] Performance test:

[0066] Anti-sparking performance:

[0067] Taking finished bricks as specimens, each specimen weighs 50g, 100g, 150g, 200g, 250g respectively, and the measurement error does not exceed 1g; the diameter of the grinding wheel used in the test is 150mm, and the rotation speed is 600 - 1000r / min; the test is carried out in a completely dark room. When the specimen is rubbed on the grinding wheel, a pressure of 10 - 20N is applied to the specimen. After any part of the specimen contacts the grinding wheel, observe the place where the specimen rubs against the grinding wheel. If no spark occurs, it is qualified; if a spark occurs, it is unqualified until no less than 20g is worn off on each specimen.

[0068] Anti-static performance:

[0069] Taking finished bricks as specimens, washing the specimens with clear water with a pH value of 6 - 8; baking the washed specimens in an oven at 110°C ± 5°C for no less than 8h; placing the specimens in a test environment with a temperature of 20°C - 25°C and a relative humidity not greater than 40%RH and standing for at least 48h; using a high-insulation resistance measuring instrument to test the point-to-point resistance value of the specimens. If the point-to-point resistance value test is within the range of 5×10 4 -1×10 9 Ω, then the specimens are qualified.

[0070] The preparation method of the green body in this solution belongs to a well-known process. The main preparation process of the green body is as follows: ① Weigh the raw materials of the green body; ② Raw material mixing: Mix the raw materials of the green body evenly into a green body slurry. ③ Forming: Put the mixed green body slurry into a green body machine and form a green body by extrusion and compaction. ④ Air drying: Air dry the green body. Among them, in the embodiment, the potassium-sodium feldspar powder is manually mixed, and the ratio between potassium feldspar and sodium feldspar is 1:1.

[0071] Embodiment A respectively includes Embodiments A1 - A3;

[0072] Embodiment A1

[0073] (1) Take the raw materials of the glaze slurry for the body according to the mass fraction, add 0.06 parts of sodium carboxymethyl cellulose, 0.5 parts of sodium tripolyphosphate and 50 parts of water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0074] The glaze slurry for the body, by mass, comprises the following raw materials: 3 parts light calcium carbonate powder, 10 parts magnesium oxide, 8 parts dolomite powder, 6 parts sodium sand, 12 parts potassium sand, 3 parts alumina, and 15 parts clay.

[0075] (2) Take the raw materials for the green body, and mix 35 parts of porcelain stone, 20 parts of albite, 10 parts of calcium stone powder and 10 parts of diopside according to the mass ratio. Then add 0.06 parts of sodium carboxymethyl cellulose, 0.5 parts of sodium tripolyphosphate and 50 parts of water. Ball mill until 0.7% residue is obtained on a 325 mesh sieve. Then prepare the green body from the raw materials.

[0076] (3) Apply the glaze slurry to the surface of the body;

[0077] (4) The green body is fired at 1200℃ to produce finished bricks.

[0078] Example A2:

[0079] (1) Take the raw materials of the glaze slurry for the body according to the mass fraction, add 0.06 parts of sodium carboxymethyl cellulose, 0.5 parts of sodium tripolyphosphate and 50 parts of water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0080] The glaze slurry for the body, by mass, comprises the following raw materials: 3 parts light calcium carbonate powder, 10 parts magnesium oxide, 8 parts dolomite powder, 6 parts sodium sand, 12 parts potassium sand, 3 parts aluminum oxide, and 15 parts clay.

[0081] (2) Take the raw materials of the green body, mix 35 parts of porcelain stone, 20 parts of albite, 10 parts of calcium stone powder and 10 parts of diopside according to the mass ratio, then add 0.06 parts of sodium carboxymethyl cellulose, 0.5 parts of sodium tripolyphosphate and 50 parts of water, ball mill until 0.7% residue is obtained on a 325 mesh sieve, then add 4 parts of conductive nanomaterials and mix well; then prepare the green body from the raw materials.

[0082] The conductive nanomaterial, by mass percentage, comprises 99% titanium oxide and 1% nickel oxide;

[0083] (3) Apply the glaze slurry to the surface of the body;

[0084] (4) The green body is fired at 1200℃ to produce finished bricks.

[0085] Example A3:

[0086] (1) Take the raw materials of the glaze slurry for the body according to the mass fraction, add 0.06 parts of sodium carboxymethyl cellulose, 0.5 parts of sodium tripolyphosphate and 50 parts of water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0087] The glaze slurry for the body, by mass, comprises the following raw materials: 3 parts light calcium carbonate powder, 10 parts magnesium oxide, 8 parts dolomite powder, 6 parts sodium sand, 12 parts potassium sand, 3 parts alumina, 15 parts clay and 13 parts conductive nanomaterials.

[0088] The conductive nanomaterial comprises, by mass percentage, 99% titanium oxide and 1% nickel oxide;

[0089] (2) Take the raw materials for the green body, and mix 35 parts of porcelain stone, 20 parts of albite, 10 parts of calcium stone powder and 10 parts of diopside according to the mass ratio. Then add 0.06 parts of sodium carboxymethyl cellulose, 0.5 parts of sodium tripolyphosphate and 50 parts of water. Ball mill until 0.7% residue is obtained on a 325 mesh sieve. Then prepare the green body from the raw materials.

[0090] (3) Apply the glaze slurry to the surface of the body;

[0091] (4) The green body is fired at 1200℃ to produce finished bricks.

[0092] Comparative Example A:

[0093] The steps of Comparative Example A are basically the same as those of Example A, except that Comparative Example A does not perform step (1).

[0094] The performance of Examples A1-A3 and Comparative Example A was tested, and the results are shown in Table 1.

[0095]

[0096] 1. As can be seen from the comparison between Example A1 and Comparative Example A, Example A1 involves directly applying the glaze slurry to the body of a known formula and firing it, while Comparative Example A only involves firing the body. As a result, Comparative Example A, due to the absence of glaze slurry, produced sparks during the spark-resistant performance test; while Example A1 did not produce any sparks, thus exhibiting spark-resistant performance. This demonstrates that the present solution, using light calcium carbonate powder, magnesium oxide, dolomite powder, sodium sand, potassium sand, alumina, and clay as the glaze slurry, can apply a spark-resistant glaze layer to the surface of the ceramic tile, thereby reducing sparks generated by friction or impact.

[0097] 2. A comparison of Examples A1, A2, and A3 shows that Example A2, compared to Example A1, further incorporates titanium dioxide as a conductive nanomaterial in its green body formulation. The resistivity of the finished brick is 1.0 × 10⁻⁶ times that of Example A1. 13Ω decreased from 4.0 × 10 in Example A2 11 Ω; Compared to Example A1, Example A3 further added titanium dioxide as a conductive nanomaterial to the glaze slurry formulation for the body, and the resistivity of the finished brick was 1.0 × 10⁻⁶ compared to Example A1. 13 Ω decreased from 1.7 × 10⁻⁶ in Example A3. 10 Ω; This indicates that the solution can improve the antistatic properties of fire-resistant ceramic tiles by adding conductive nanomaterials to the glaze slurry used in the body, or by adding conductive nanomaterials to the body formula to combine with the glaze slurry, thereby improving the antistatic properties of fire-resistant ceramic tiles, thus enabling the ceramic tiles to simultaneously possess both fire-resistant and antistatic properties.

[0098] Example B includes Examples B1-B5;

[0099] Example B1:

[0100] (1) Take the raw materials of the glaze slurry for the body according to the mass fraction, add 0.05 parts of sodium carboxymethyl cellulose, 0.4 parts of sodium tripolyphosphate and 55 parts of water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0101] The glaze slurry for the body, by mass parts, comprises the following raw materials: 12 parts light calcium carbonate powder, 1 part magnesium oxide, 17 parts dolomite powder, 12 parts sodium sand, 6 parts potassium sand, 0.5 parts aluminum oxide, 25 parts clay and conductive nanomaterials, the conductive nanomaterials comprising: 4 parts tin dioxide, 8 parts antimony trioxide and 1 part zinc oxide.

[0102] (2) Take the raw materials for the blank body, mix 40 parts of clay and 60 parts of potassium sodium feldspar powder according to the mass ratio, then add 0.05 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium tripolyphosphate and 45 parts of water, and ball mill until the residue on a 325 mesh sieve is 0.6%-0.8%; then prepare the blank body from the raw materials.

[0103] (3) Apply the glaze slurry to the surface of the body;

[0104] (4) The green body is fired at 1150℃ to produce finished bricks.

[0105] Example B2:

[0106] (1) Take the raw materials of the glaze slurry for the body according to the mass fraction, add 0.05 parts of sodium carboxymethyl cellulose, 0.4 parts of sodium tripolyphosphate and 55 parts of water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0107] The glaze slurry for the body, by mass, comprises the following raw materials: 12 parts light calcium carbonate powder, 1 part magnesium oxide, 17 parts dolomite powder, 12 parts sodium sand, 6 parts potassium sand, 0.5 parts alumina, and 25 parts clay.

[0108] (2) Take the raw materials of the blank body, mix 40 parts of clay and 60 parts of potassium sodium feldspar powder according to the mass ratio, then add 0.05 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium tripolyphosphate and 45 parts of water, ball mill until the residue on a 325 mesh sieve is 0.6%-0.8%, then add 3 parts of conductive nanomaterials and mix well; then prepare the blank body from the raw materials.

[0109] The conductive nanomaterial, by mass percentage, comprises 40% iron oxide, 50% chromium oxide, 5% cobalt oxide, 3% manganese oxide, and 2% nickel oxide.

[0110] (3) Apply the glaze slurry to the surface of the body;

[0111] (4) The green body is fired at 1150℃ to produce finished bricks.

[0112] Example B3:

[0113] (1) Take the raw materials of the glaze slurry for the body according to the mass fraction, add 0.05 parts of sodium carboxymethyl cellulose, 0.4 parts of sodium tripolyphosphate and 55 parts of water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0114] The glaze slurry for the body, by mass parts, comprises the following raw materials: 12 parts light calcium carbonate powder, 1 part magnesium oxide, 17 parts dolomite powder, 12 parts sodium sand, 6 parts potassium sand, 0.5 parts aluminum oxide, 25 parts clay and conductive nanomaterials, the conductive nanomaterials comprising: 4 parts tin dioxide, 8 parts antimony trioxide and 1 part zinc oxide.

[0115] (2) Take the raw materials of the blank body, mix 40 parts of clay and 60 parts of potassium sodium feldspar powder according to the mass ratio, then add 0.05 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium tripolyphosphate and 45 parts of water, ball mill until the residue on a 325 mesh sieve is 0.6%-0.8%, then add 3 parts of conductive nanomaterials and mix well; then prepare the blank body from the raw materials.

[0116] The conductive nanomaterial, by mass percentage, comprises 40% iron oxide, 50% chromium oxide, 5% cobalt oxide, 3% manganese oxide, and 2% nickel oxide.

[0117] (3) Apply the glaze slurry to the surface of the body;

[0118] (4) The green body is fired at 1150℃ to produce finished bricks.

[0119] Performance tests were conducted on Examples B1-B3, and the results are shown in Table 2.

[0120]

[0121] illustrate:

[0122] 1. Comparing Example B1 with Example A, it can be seen that the conductive nanomaterial used in Example B1 is a combination of tin dioxide, antimony trioxide, and zinc oxide. Compared with the conductive nanomaterial mainly composed of titanium oxide in Example A3, Example B1 has a better promoting effect on the antistatic properties of spark-resistant ceramics. The resistivity of the finished brick in Example B1 can reach 6.1 × 10⁻⁶. 8 Ω; while the resistivity of the finished brick in Example A3 is only 1.7 × 10 Ω; 10 The value Ω indicates that using tin dioxide, antimony trioxide, and zinc oxide as conductive nanomaterials in this scheme is more suitable for improving the antistatic properties of glaze pastes for blanks, while using other conductive nanomaterials failed to effectively improve the antistatic properties.

[0123] 2. Comparing Example B2 with Example A, it can be seen that the conductive nanomaterial used in Example B2 is a combination of iron oxide, chromium oxide, cobalt oxide, manganese oxide, and nickel oxide. Compared with the conductive nanomaterial mainly composed of titanium oxide in Example A2, Example B2 has a better promoting effect on the antistatic properties of spark-resistant ceramics. The resistivity of the finished brick in Example B2 can reach 6.8 × 10⁻⁶. 8 Ω; while the resistivity of the finished brick in Example A3 is only 4.0 × 10 Ω; 12 The value Ω indicates that the conductive nanomaterials used in this scheme are more suitable for improving the antistatic properties of glaze slurries for body blanks, while the use of other conductive nanomaterials failed to effectively improve the antistatic properties.

[0124] 3. Comparing Examples B1, B2, and B3, it can be seen that Example B1 only adds the conductive nanomaterial to the glaze slurry for the green body in step (1), while Example B2 only adds the conductive nanomaterial to the raw material of the green body in step (2); the resistance value of Example B1 is 6.1 × 10⁻⁶. 8 Ω, the resistance value of Example B2 is 6.8 × 10 Ω. 8 Ω; In Example B3, conductive nanomaterials were added to the glaze slurry for the body in step (1), and conductive nanomaterials were added to the raw materials of the body in step (2). The resistance value of Example B3 was 1.7 × 10 Ω. 7Ω indicates that adding conductive nanomaterials to both the glaze slurry and the body formulation can further enhance the antistatic properties of spark-resistant ceramic tiles. This is because the body of Example B3 can better load the conductive nanomaterials. The combination of iron oxide, chromium oxide, cobalt oxide, manganese oxide, and nickel oxide serves as the conductive nanomaterial, while the combination of tin dioxide, antimony trioxide, and zinc oxide serves as the conductive nanomaterial. When the conductive nanomaterials in the body combine with the conductive nanomaterials in the glaze slurry, a more interconnected conductive network is formed between the body and the glaze. Compared to Example B1 or Example B2, Example B3 forms a more stable and smoother conductive pathway. Within a specific range, the raw materials of the glaze slurry do not conflict with the formulation of the conductive nanomaterials. The added conductive nanomaterials do not affect the spark-resistant properties of the ceramic tiles and have high compatibility. Thus, both the spark-resistant and antistatic properties of the ceramic tiles can be utilized.

[0125] Example B4:

[0126] The basic steps of Example B4 are basically the same as those of Example B3. The difference is that in step (2) of Example B4, the raw materials of the blank are taken, and according to the mass fraction, 100 parts of clay are added to 0.05 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium tripolyphosphate and 45 parts of water. After ball milling until 0.6%-0.8% residue is left on a 325 mesh sieve, 3 parts of conductive nanomaterials are added and mixed evenly. Then the blank is prepared into a blank.

[0127] Example B5:

[0128] The basic steps of Example B5 are basically the same as those of Example B3. The difference is that in step (2) of Example B5, the raw materials of the green body are taken, and according to the mass fraction, 100 parts of potassium sodium feldspar powder, 0.05 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium tripolyphosphate and 45 parts of water are added and ball-milled until the residue on a 325 mesh sieve is 0.6%-0.8%. Then, 3 parts of conductive nanomaterials are added and mixed evenly. The green body is then prepared from the raw materials.

[0129] Performance tests were conducted on Examples B4-B2, and the results are shown in Table 3.

[0130]

[0131] illustrate:

[0132] A comparison of Examples B4 and B5 with Example B3 reveals that Example B4 used only clay in its raw materials, without adding potassium-sodium feldspar powder; while Example B5 used only potassium-sodium feldspar powder in its raw materials, without adding clay. Therefore, the failure to simultaneously use clay and potassium-sodium feldspar powder in Examples B4 and B5 resulted in decreased compatibility of the raw materials with the conductive nanomaterials, thus affecting the stability of the conductive network. The resistivity of the finished brick in Example B4 was 4.3 × 10⁻⁶. 8 Ω, the resistivity of the finished brick in Example B5 is 3.6 × 10 Ω. 8 Ω; while the raw materials for the blank in Example B3 used both clay and potassium-sodium feldspar powder, and its resistivity reached 1.7 × 10 Ω; 7 Ω; if the resistance is too low, it becomes a conductor, which is not a property required for ceramic tiles and constitutes a different material; if the resistance is too high, the ceramic tile will not be able to perform its anti-static function. In this embodiment, the resistance value of B3 is 1.7 × 10⁻⁶. 7 At Ω, its conductivity is moderate, possessing both poor conductivity and antistatic properties. This indicates that the blank made of clay and potassium-sodium feldspar powder has optimal compatibility with the conductive nanomaterials of this scheme and / or the conductive nanomaterials of the material, and can exert optimal antistatic performance.

[0133] Example C:

[0134] (1) Take the raw materials of the glaze slurry for the body according to the mass fraction, add 0.07 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium tripolyphosphate and 45 parts of water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0135] The glaze slurry for the body, by mass, comprises the following raw materials: 5 parts light calcium carbonate powder, 8 parts magnesium oxide, 10 parts dolomite powder, 8 parts sodium sand, 10 parts potassium sand, 5 parts aluminum oxide, 15 parts clay and conductive nanomaterials, the conductive nanomaterials comprising 8 parts tin dioxide, 6 parts antimony trioxide and 2 parts zinc oxide.

[0136] (2) Take the raw materials for the blank body, mix 15 parts of clay and 85 parts of potassium sodium feldspar powder according to the mass ratio, then add 0.05 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium tripolyphosphate and 45 parts of water, ball mill until the residue on a 325 mesh sieve is 0.6%-0.8%, then add 0.05 parts of conductive nanomaterials and mix well; then prepare the blank body from the raw materials.

[0137] The conductive nanomaterials, by mass percentage, consist of 40% iron oxide, 50% chromium oxide, 5% cobalt oxide, and 5% manganese oxide.

[0138] (3) Apply the glaze slurry to the surface of the body;

[0139] (4) The green body is fired at 1200℃ to produce finished bricks.

[0140] Example D:

[0141] (1) Take the raw materials of the glaze slurry for the body according to the mass fraction, add 0.05 parts of sodium carboxymethyl cellulose, 0.4 parts of sodium tripolyphosphate and 55 parts of water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0142] The glaze slurry for the body, by mass, comprises the following raw materials: 10 parts light calcium carbonate powder, 3.5 parts magnesium oxide, 15 parts dolomite powder, 10 parts sodium sand, 8 parts potassium sand, 1.5 parts aluminum oxide, 20 parts clay, and conductive nanomaterials, which include: 6 parts tin dioxide, 2 parts antimony trioxide, and 10 parts zinc oxide.

[0143] (2) Take the raw materials of the blank body, mix 30 parts of clay and 70 parts of potassium sodium feldspar powder according to the mass ratio, then add 0.05 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium tripolyphosphate and 45 parts of water, ball mill until the residue on a 325 mesh sieve is 0.6%-0.8%, then add 2 parts of conductive nanomaterials and mix well; then prepare the blank body from the raw materials.

[0144] The conductive nanomaterial, by mass percentage, comprises 50% iron oxide and 50% chromium oxide;

[0145] (3) Apply the glaze slurry to the surface of the body;

[0146] (4) The green body is fired at 1200℃ to produce finished bricks.

[0147] Example E:

[0148] (1) Take the raw materials of the glaze slurry for the body according to the mass fraction, add 0.05 parts of sodium carboxymethyl cellulose, 0.4 parts of sodium tripolyphosphate and 55 parts of water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body;

[0149] The glaze slurry for the body, by mass, comprises the following raw materials: 10 parts light calcium carbonate powder, 3.5 parts magnesium oxide, 15 parts dolomite powder, 10 parts sodium sand, 8 parts potassium sand, 1.5 parts aluminum oxide, 20 parts clay, and conductive nanomaterials, which include: 6 parts tin dioxide, 2 parts antimony trioxide, and 10 parts zinc oxide.

[0150] (2) Take the raw materials of the blank body, mix 5 parts of clay and 95 parts of potassium sodium feldspar powder according to the mass ratio, then add 0.05 parts of sodium carboxymethyl cellulose, 0.6 parts of sodium tripolyphosphate and 45 parts of water, ball mill until the residue on a 325 mesh sieve is 0.6%-0.8%, then add 5 parts of conductive nanomaterials and mix well; then prepare the blank body from the raw materials.

[0151] The conductive nanomaterial, by mass percentage, comprises 40% iron oxide, 50% chromium oxide, 9.8% cobalt oxide, 0.1% manganese oxide, and 0.1% nickel oxide.

[0152] (3) Apply the glaze slurry to the surface of the body;

[0153] (4) The green body is fired at 1150℃ to produce finished bricks.

[0154] (5) Polish the blank.

[0155] The performance of Example CE was tested, and the results are shown in Table 4.

[0156]

[0157] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A spark-resistant glaze slurry for ceramic blanks, characterized in that, By mass, the raw materials include: 3-12 parts of light calcium carbonate powder, 1-10 parts of magnesium oxide, 8-17 parts of dolomite powder, 6-12 parts of sodium sand, 6-12 parts of potassium sand, 0.5-6 parts of aluminum oxide, and 10-25 parts of clay.

2. The spark-resistant glaze slurry for ceramic blanks according to claim 1, characterized in that, By mass, the raw materials include: 3-12 parts of light calcium carbonate powder, 1-10 parts of magnesium oxide, 8-17 parts of dolomite powder, 6-12 parts of sodium sand, 6-12 parts of potassium sand, 0.5-6 parts of aluminum oxide, 10-25 parts of clay and conductive nanomaterials, wherein the conductive nanomaterials include: 4-10 parts of tin dioxide, 1-8 parts of antimony trioxide and 1-12 parts of zinc oxide.

3. A spark-resistant ceramic, characterized in that, include: A blank body and a glaze layer for the blank body; the glaze layer for the blank body is disposed on the surface of the blank body; The glaze layer for the body is made from a spark-resistant ceramic body glaze slurry as described in any one of claims 1-2.

4. The spark-resistant ceramic according to claim 3, characterized in that, The raw materials of the blank, by mass, include: 5-40 parts of clay, 60-95 parts of potassium sodium feldspar powder, and no more than 5 parts of conductive nanomaterials.

5. The spark-resistant ceramic according to claim 4, characterized in that, The conductive nanomaterials described herein, by mass percentage, comprise: 85-100% primary conductive material and the remainder secondary conductive material; The main conductive material includes one or more combinations of iron oxide, chromium oxide and cobalt oxide; The secondary conductive material includes one or more combinations of manganese oxide and nickel oxide.

6. The spark-resistant ceramic according to claim 5, characterized in that, The conductive nanomaterials described herein, by mass percentage, comprise the following raw materials: 40-50% iron oxide, 40-50% chromium oxide, 5-15% cobalt oxide, and the balance being secondary conductive materials. The secondary conductive materials include manganese oxide and nickel oxide.

7. A method for preparing spark-resistant ceramic, characterized in that, The method for preparing a spark-resistant ceramic according to any one of claims 3-6 comprises the following steps: (1) Take the raw materials of the glaze slurry for the body, add sodium carboxymethyl cellulose, sodium tripolyphosphate and water, and ball mill until the residue on a 325 mesh sieve is 0 to obtain the glaze slurry for the body; (2) Take the raw materials for the blank, mix the clay and potassium sodium feldspar powder, and ball mill until the residue on a 325 mesh sieve is 0.6%-0.8%; then prepare the blank into a blank. (3) Apply the glaze slurry to the surface of the body; (4) The green body is fired at 1150-1200℃ to produce finished bricks.

8. The method for preparing a spark-resistant ceramic according to claim 7, characterized in that, In step (2), the raw materials for the blank are taken, the clay and potassium sodium feldspar powder are mixed, and the mixture is ball-milled until the residue is 0.6%-0.8% on a 325-mesh sieve. After the conductive nanomaterials are added and mixed evenly, the blank is prepared into a blank.

9. A type of ceramic tile, characterized in that, Its surface is coated with a glaze layer for a ceramic body made from a glaze slurry for a spark-resistant ceramic body as described in any one of claims 1-2, or a spark-resistant ceramic as described in any one of claims 3-6, or prepared by a method for preparing a spark-resistant ceramic as described in any one of claims 7-8.

10. The use of a glaze slurry for body preparation in the preparation of high-temperature resistant, antistatic, and spark-resistant ceramics, characterized in that, The glaze slurry for the body is the spark-resistant glaze slurry for ceramic bodies as described in claim 2.

Images