Ceramic coating liquid and preparation method thereof

Abstract

The invention discloses a ceramic coating liquid and a preparation method thereof, and relates to the technical field of ceramic coatings. The problems that an existing ceramic coating liquid material is high in cost, limited in application scene and poor in mechanical strength and insulating capacity are solved. The novel high-molecular silicone rubber ceramic material is specifically prepared from the following components in parts by weight: 10 to 20 parts of a novel high-molecular silicone rubber material, 1 to 5 parts of a ceramic forming component, 0.1 to 0.5 part of a flame retardant, 0.01 to 0.2 part of an anti-settling agent, 0.01 to 0.05 part of a filling agent, 0.1 to 0.2 part of calcium fluoride, 0.001 to 0.005 part of an anti-rust agent and 50 to 100 parts of a solvent. The ceramic coating liquid provided by the invention has the effects of good adhesive force, corrosion resistance, oxidation resistance, water resistance and the like, especially the fire resistance is improved, a fire source is isolated after ceramic forming, building materials can be effectively prevented from generating static electricity, and meanwhile, the preparation method of the ceramic coating liquid is simple, simple in process and convenient to implement.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic coatings, and in particular to a ceramic coating liquid and a preparation method thereof. Background Art

[0002] Long-term exposure of wires and cables to the sun, wind and erosion will greatly reduce their service life. They are also prone to fire, leading to power outages and even affecting people's lives. In addition, elevators will cause power outages in the event of a fire, and they cannot withstand high temperatures, leading to loss of control, deformation or jamming. Therefore, the construction of a fire prevention system for construction projects is particularly important. Current fireproof materials include refractory bricks, refractory boards, fireproof coatings, ceramic coatings, etc.

[0003] However, existing fireproof materials still have certain limitations. For example, some high-performance fireproof materials, such as aerogel refractory boards, are more expensive than traditional building materials due to their complex production process and high raw material costs. In addition, some fireproof materials, such as silicate foam insulation boards, aerated concrete boards and rock wool boards (strips), have high water absorption, which may lead to a decrease in material performance, easy shrinkage and cracking. Phosphate fireproof ceramic coatings can be highly flame retardant, but their poor heat resistance and unsatisfactory compatibility will produce dripping during combustion, which is also a potential problem in their application. Traditional ceramic materials contain certain harmful substances such as lead, chromium, and cadmium, and ceramic coatings also contain these substances, so there is still room for improvement in terms of environmental protection. Existing ceramic coatings are unique in material and need to be heated under precise temperature and pressure conditions. The complex manufacturing process makes construction difficult.

[0004] After searching, the patent application number CN115073921B discloses a preparation process of a silicone rubber foam coated with a ceramic flame retardant coating, with ultra-light silicone rubber as the core layer, and a ceramic synergistic flame retardant coating on the outside to form a "sandwich" structure of silicone rubber foam. On the one hand, this structure can achieve a higher flame retardant level with less flame retardant added, and on the other hand, it can enhance the mechanical properties of the material under high-temperature ablation and play a good flame retardant effect. However, due to its complex structural design, it is difficult to implement, and due to the use of special flame retardants and preparation processes, its material cost is high and its applicable application scenarios are limited.

[0005] CN114709022A discloses a flame retardant ceramic silicone rubber sheathed cable and a preparation method thereof, wherein the flame retardant ceramic silicone rubber sheathed cable comprises a conductor, wherein the conductor is provided with an intermediate protective layer and a flame retardant ceramic silicone rubber sheath in sequence from the inner layer to the outer layer, and the flame retardant ceramic silicone rubber sheath comprises the following components by weight: 100 parts of silicone rubber raw rubber, 5-25 parts of white carbon black, 1-10 parts of vulcanizing agent, 20-400 parts of ceramic powder, and 0-100 parts of ceramic additive; the flame retardant ceramic silicone rubber sheathed cable can quickly form a solid ceramic shell when burned at high temperature, and has excellent ceramicization, fire resistance, fireproof, heat insulation and processability. However, its waterproof and moisture-proof properties are poor. Once damp, the mechanical strength and insulation capacity deteriorate, cracking occurs, and the fire resistance decreases accordingly, which has certain limitations in practical applications.

[0006] Therefore, according to the above situation and the current environmental situation, we have developed a method for preparing a ceramic coating liquid, which has good adhesion, anti-corrosion, anti-oxidation and waterproof effects, especially strong fire resistance, fire isolation, convenient construction, low cost and other comprehensive characteristics. This ceramic coating has a good application prospect in the future market development.

[0007] Therefore, in view of the deficiencies of the prior art, the present invention provides a ceramic coating liquid and a preparation method thereof. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a ceramic coating liquid and a preparation method thereof.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A ceramic coating liquid comprises the following components calculated in parts by weight: 10-20 parts of a new polymer silicone rubber material, 1-5 parts of a ceramic component, 0.1-0.5 parts of a flame retardant, 0.01-0.2 parts of an anti-precipitation agent, 0.01-0.05 parts of a filler, 0.1-0.2 parts of calcium fluoride, 0.001-0.005 parts of a rust inhibitor and 50-100 parts of a solvent.

[0011] Preferably, the novel polymer silicone rubber material is one or more of dimethyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, fluorosilicone, nitrile silicone rubber, 107 room temperature vulcanized silicone rubber and high phenyl silicone rubber.

[0012] Furthermore: the porcelain-forming ingredients are one or more of clay, quartz, feldspar, fumed silica, kaolin, wollastonite, glass powder, and silicate.

[0013] Further preferably, the flame retardant is one or more of melamine, melamine cyanurate, antimony trioxide, aluminum hydroxide type I, modified magnesium hydroxide, and zinc borate.

[0014] As a preferred embodiment of the present invention, the filler is one or more of mica, kaolin, alumina and calcium oxide.

[0015] As a further preferred embodiment of the present invention: the rust inhibitor is one or more of methacrylic acid, polymerized aluminum oxide, triethanolamine, zinc stearate, and sodium benzoate.

[0016] As a further solution of the present invention: the anti-precipitation agent is one or more of organic modified bentonite, fumed silica, BYK anti-precipitation agent, non-ionic polyoxyethylene fatty amine (alcohol), and fine calcium carbonate.

[0017] On the basis of the above scheme: the solvent is one or more of petroleum ether, dichloromethane, ethyl acetate, ethanol and isopropanol.

[0018] A method for preparing a ceramic coating liquid comprises the following steps:

[0019] S1: Weigh 10-20 parts of the new polymer silicone rubber material, cut it into 5×5×5mm blocks with a knife and put it into a beaker, then add 10-100 parts of solvent, stir on a constant temperature magnetic stirrer to obtain a dissolved sample Y;

[0020] S2: Weigh 1-5 parts of the porcelain-forming component and 0.1-0.5 parts of the flame retardant, fix them on a disperser and stir them uniformly to obtain a uniform solution A;

[0021] S3: Weigh 0.01-0.05 parts of filler, 0.1-0.2 parts of calcium fluoride, and 0.001-0.005 parts of rust inhibitor, add them to the solution A obtained in the above step, and disperse them evenly;

[0022] S4: Weigh 0.01-0.2 parts of an anti-precipitation agent, add them to the mixed solution, adjust the speed to 1000 r / min, stir evenly, and obtain a ceramic coating liquid B;

[0023] S5: Finely grind the ceramic coating liquid B using a sand mill for 15 minutes, and then filter it using a 200-mesh filter cloth to obtain a ceramic coating liquid.

[0024] The beneficial effects of the present invention are:

[0025] 1. The ceramic coating proposed by the present invention has good adhesion, anti-corrosion, anti-oxidation and waterproof effects on building materials, especially improved fire resistance, and can effectively prevent static electricity from being generated in building materials by isolating fire sources after ceramicization. At the same time, the preparation method of the ceramic coating liquid is simple, the process is concise, and it is easy to implement.

[0026] 2. The ceramic coating proposed by the present invention is easy to be coated on the surface of the material. When the coating is coated on the surface of the material, some short chains of the macromolecules will diffuse to the other side of the interface to varying degrees to form a staggered network structure, thereby enhancing adhesion; in addition, the active groups in the coating react with oxygen atoms or hydroxyl groups on the surface of the material to form hydrogen bonds and chemical bonds, thereby enhancing adhesion.

[0027] 3. The present invention adds glass powders with different melting points in the preparation of the ceramic coating liquid. The glass powder is an inorganic material. Under different high-temperature impacts, it is heated and melted into a glass-ceramic state, forming an inorganic glass-like oxygen-isolating protective layer on the coating surface, which acts as a skeleton to prevent the material surface from being oxidized by high temperature. The protective layer is also acid- and alkali-resistant and highly weather-resistant, thereby extending the service life of the building material.

[0028] 4. The present invention adds calcium fluoride in the preparation of the ceramic coating liquid. Calcium fluoride is an inorganic compound. On the one hand, it can increase the melting temperature of the ceramic coating, and on the other hand, it can increase the strength of the coating after ceramicization and maintain the stability of the structure in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic flow chart of a method for preparing a ceramic coating liquid proposed by the present invention;

[0030] Figure 2 A schematic diagram of an unsintered coating sample of a ceramic coating liquid and a sintered sample in a muffle furnace at 800°C / 2h;

[0031] Figure 3 This is a schematic cross-sectional SEM diagram of a ceramic coating liquid sintered and ceramicized according to the present invention;

[0032] Figure 4 This is a planar SEM schematic diagram of a ceramic coating liquid after sintering and ceramicization proposed by the present invention;

[0033] Figure 5 The SEM diagrams of the ceramic coating liquid proposed by the present invention at different magnifications after sintering and ceramicization at 800°C / 2h in a muffle furnace;

[0034] Figure 6 Schematic diagram of SEM images at different magnifications of a ceramic coating liquid proposed in the present invention after sintering and ceramicization at 950°C / 2h in a muffle furnace. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0036] Example:

[0037] A ceramic coating liquid comprises the following components calculated in parts by weight: 10-20 parts of a new polymer silicone rubber material, 1-5 parts of a ceramic component, 0.1-0.5 parts of a flame retardant, 0.01-0.2 parts of an anti-precipitation agent, 0.01-0.05 parts of a filler, 0.1-0.2 parts of calcium fluoride, 0.001-0.005 parts of a rust inhibitor and 50-100 parts of a solvent.

[0038] The novel polymer silicone rubber material is one or more of dimethyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, fluorosilicone, nitrile silicone rubber, 107 room temperature vulcanized silicone rubber and high phenyl silicone rubber.

[0039] The porcelain-forming ingredients are one or more of clay, quartz, feldspar, fumed silica, kaolin, wollastonite, glass powder and silicate.

[0040] The flame retardant is one or more of melamine, melamine cyanurate, antimony trioxide, aluminum hydroxide type I, modified magnesium hydroxide, and zinc borate.

[0041] The filler is one or more of mica, kaolin, alumina and calcium oxide.

[0042] The rust inhibitor is one or more of methacrylic acid, polymerized aluminum oxide, triethanolamine, zinc stearate, and sodium benzoate.

[0043] The anti-precipitation agent is one or more of organic modified bentonite, fumed silica, BYK anti-precipitation agent, non-ionic polyoxyethylene fatty amine (alcohol), and fine calcium carbonate.

[0044] The solvent is one or more of petroleum ether, dichloromethane, ethyl acetate, ethanol and isopropanol.

[0045] A method for preparing a ceramic coating liquid comprises the following steps:

[0046] S1: Weigh 10-20 parts of the new polymer silicone rubber material, cut it into 5×5×5mm blocks with a knife and put it into a beaker, then add 10-100 parts of solvent, stir on a constant temperature magnetic stirrer to obtain a dissolved sample Y;

[0047] S2: Weigh 1-5 parts of the porcelain-forming component and 0.1-0.5 parts of the flame retardant, fix them on a disperser and stir them uniformly to obtain a uniform solution A;

[0048] S3: Weigh 0.01-0.05 parts of filler, 0.1-0.2 parts of calcium fluoride, and 0.001-0.005 parts of rust inhibitor, add them to the solution A obtained in the above step, and disperse them evenly;

[0049] S4: Weigh 0.01-0.2 parts of an anti-precipitation agent, add them to the mixed solution, adjust the speed to 1000 r / min, stir evenly, and obtain a ceramic coating liquid B;

[0050] S5: Finely grind the ceramic coating liquid B using a sand mill for 15 minutes, and then filter it using a 200-mesh filter cloth to obtain a ceramic coating liquid.

[0051] The ceramic coating proposed by the present invention is easy to be coated on the surface of the material. When the coating is coated on the surface of the material, some short chains of the macromolecules will diffuse to the other side of the interface to varying degrees to form a staggered network structure, thereby improving the adhesion; in addition, the active groups in the coating react with oxygen atoms or hydroxyl groups on the surface of the material to form hydrogen bonds and chemical bonds, thereby enhancing the adhesion.

[0052] The present invention adds glass powders with different melting points in the preparation of the ceramic coating liquid. The glass powder is an inorganic material that melts into a glass-ceramic state under different high-temperature impacts, forming an inorganic glass-like oxygen-isolating protective layer on the coating surface, which plays a skeleton role and prevents the material surface from being oxidized by high temperature. The protective layer also has acid and alkali resistance and high weather resistance, thereby extending the service life of the building material.

[0053] The present invention adds calcium fluoride in the preparation of the ceramic coating liquid. Calcium fluoride is an inorganic compound. On the one hand, it can increase the melting temperature of the ceramic coating, and on the other hand, it can increase the strength of the coating after ceramicization and maintain the stability of the structure in a high temperature environment.

[0054] The ceramic coating proposed by the present invention has good adhesion, anti-corrosion, anti-oxidation and waterproof effects on building materials, especially improved fire resistance. After ceramicization, it isolates fire sources and can effectively prevent building materials from generating static electricity. At the same time, the preparation method of the ceramic coating liquid is simple, the process is concise, and it is easy to implement.

[0055] Application Example 1:

[0056] A ceramic coating liquid comprises 10 parts of methyl vinyl silicone rubber, 5 parts of wollastonite, 0.5 parts of fumed silica, 1.5 parts of kaolin, 1.5 parts of 400°C glass powder, 0.5 parts of 600°C glass powder, 0.5 parts of 800°C glass powder, 1.2 parts of modified magnesium hydroxide, 0.15 parts of type I aluminum hydroxide, 0.05 parts of calcium oxide, 0.15 parts of calcium fluoride, 0.02 parts of zinc borate, 0.002 parts of zinc stearate and 60 parts of ethyl acetate solvent.

[0057] Subsequently, a new polymer silicone rubber material composed of methyl vinyl silicone rubber; a ceramic component composed of wollastonite, fumed silica, kaolin, glass powder 400°C, glass powder 600°C, and glass powder 800°C; a flame retardant composed of modified magnesium hydroxide, zinc borate, and aluminum hydroxide type I; a filler composed of calcium oxide; a rust remover composed of zinc stearate and calcium fluoride are prepared according to a preparation method for a ceramic coating liquid, and the preparation process includes the following steps:

[0058] S1: Weigh 10 parts of methyl vinyl silicone rubber material, cut it into 5×5×5mm blocks with a knife and put it into a beaker, then add 60 parts of ethyl acetate solvent, stir on a constant temperature magnetic stirrer to obtain a dissolved sample Y. At this time, the silicone rubber material is completely dissolved and the solution is translucent;

[0059] S2: Weigh 5 parts of wollastonite, 0.5 parts of fumed silica, 1.5 parts of kaolin, 1.5 parts of glass powder 400℃, 0.5 parts of glass powder 600℃, 0.5 parts of glass powder 800℃, 1.2 parts of modified magnesium hydroxide, and 0.15 parts of aluminum hydroxide type I, fix them on a disperser and stir them uniformly, add components while stirring to obtain a uniform solution A;

[0060] S3: Weigh 0.05 parts of calcium oxide, 0.2 parts of calcium fluoride, 0.02 parts of zinc borate, and 0.002 parts of zinc stearate, add them to the solution A obtained in step 3 above, and disperse them evenly;

[0061] S4: Weigh 0.2 g of an anti-precipitation agent, add it to the mixed solution, adjust the speed to 1000 r / min, stir evenly, and preliminarily obtain a ceramic coating liquid B;

[0062] S5: Finely grind the solution B in step 5 for 15 minutes using a sand mill, and then filter it using a 200-mesh filter cloth to obtain a ceramic coating liquid.

[0063] After the prepared ceramic coating liquid is coated on the outer walls of high-temperature pipes, elevators, wires and cables and other equipment, it can quickly adhere to the outer walls of the equipment and form a ceramic coating with good anti-corrosion, anti-oxidation and waterproof effects on the surface of the equipment. After the coating is formed into porcelain, it can effectively isolate the fire source and effectively prevent the generation of static electricity in building materials.

[0064] Application Example 2:

[0065] A ceramic coating liquid, comprising 12 parts of methyl vinyl silicone rubber, 6 parts of wollastonite, 0.4 parts of fumed silica, 1.5 parts of kaolin, 1.5 parts of glass powder 400°C, 0.5 parts of glass powder 600°C, 0.5 parts of glass powder 800°C, 1.2 parts of modified magnesium hydroxide, 0.15 parts of aluminum hydroxide type I, 0.05 parts of calcium oxide, 0.16 parts of calcium fluoride, 0.02 parts of zinc borate, 0.002 parts of zinc stearate, and 60 parts of ethyl acetate solvent;

[0066] Then, the above-mentioned materials in weight ratio are prepared according to the preparation method of the ceramic coating liquid, and the preparation process includes the following steps:

[0067] S1: Weigh 12 parts of methyl vinyl silicone rubber material, cut it into 5×5×5mm blocks with a knife and put it into a beaker, then add 60 parts of ethyl acetate solvent, stir on a constant temperature magnetic stirrer to obtain a dissolved sample Y. At this time, the silicone rubber material is completely dissolved and the solution is translucent;

[0068] S2: weigh 6 parts of wollastonite, 0.4 parts of fumed silica, 1.5 parts of kaolin, 1.5 parts of glass powder 400℃, 0.5 parts of glass powder 600℃, 0.5 parts of glass powder 800℃, 1.2 parts of modified magnesium hydroxide, and 0.15 parts of aluminum hydroxide type I, fix them on a disperser and stir them uniformly, add components while stirring to obtain a uniform solution A;

[0069] S3: Weigh 0.05 parts of calcium oxide, 0.16 parts of calcium fluoride, 0.02 parts of zinc borate, and 0.002 parts of zinc stearate, add them to the solution A obtained in step 3 above, and disperse them evenly;

[0070] S4: Weigh 0.2 g of an anti-precipitation agent, add it to the mixed solution, adjust the speed to 1000 r / min, stir evenly, and preliminarily obtain a ceramic coating liquid B;

[0071] S5: Finely grind the solution B in step 5 for 15 minutes using a sand mill, and then filter it using a 200-mesh filter cloth to obtain a ceramic coating liquid.

[0072] After the ceramic coating liquid prepared with the above weight ratio is coated on the outer walls of high-temperature pipelines, elevators, wires and cables and other equipment, it can quickly adhere to the outer walls of the equipment and form a ceramic coating with good anti-corrosion, anti-oxidation and waterproof effects on the surface of the equipment. After the coating is ceramicized, it can effectively isolate the fire source and effectively prevent the building materials from generating static electricity.

[0073] Application Example 3:

[0074] A ceramic coating liquid, comprising 14 parts of methyl vinyl silicone rubber, 8 parts of wollastonite, 0.6 parts of fumed silica, 1.5 parts of kaolin, 1.5 parts of glass powder 400°C, 0.5 parts of glass powder 600°C, 0.5 parts of glass powder 800°C, 1.2 parts of modified magnesium hydroxide, 0.15 parts of aluminum hydroxide type I, 0.05 parts of calcium oxide, 0.2 parts of calcium fluoride, 0.02 parts of zinc borate, 0.002 parts of zinc stearate, and 65 parts of ethyl acetate solvent;

[0075] Then, the above-mentioned materials in weight ratio are prepared according to the preparation method of the ceramic coating liquid, and the preparation process includes the following steps:

[0076] S1: Weigh 14 parts of methyl vinyl silicone rubber material, cut it into 5×5×5 mm blocks with a knife and put it into a beaker, then add 65 parts of ethyl acetate solvent, stir on a constant temperature magnetic stirrer to obtain a dissolved sample Y. At this time, the silicone rubber material is completely dissolved and the solution is translucent;

[0077] S2: Weigh 8 parts of wollastonite, 0.6 parts of fumed silica, 1.5 parts of kaolin, 1.5 parts of glass powder 400℃, 0.5 parts of glass powder 600℃, 0.5 parts of glass powder 800℃, 1.2 parts of modified magnesium hydroxide, and 0.15 parts of aluminum hydroxide type I, fix them on a disperser and stir them uniformly, add components while stirring to obtain a uniform solution A;

[0078] S3: Weigh 0.05 parts of calcium oxide, 0.2 parts of calcium fluoride, 0.02 parts of zinc borate, and 0.002 parts of zinc stearate, add them to the solution A obtained in step 3 above, and disperse them evenly;

[0079] S4: Weigh 0.2 g of an anti-precipitation agent, add it to the mixed solution, adjust the speed to 1000 r / min, stir evenly, and preliminarily obtain a ceramic coating liquid B;

[0080] S5: Finely grind the solution B in step 5 for 15 minutes using a sand mill, and then filter it using a 200-mesh filter cloth to obtain a ceramic coating liquid.

[0081] After the ceramic coating liquid prepared with the above weight ratio is coated on the outer walls of high-temperature pipelines, elevators, wires and cables and other equipment, it can quickly adhere to the outer walls of the equipment and form a ceramic coating with good anti-corrosion, anti-oxidation and waterproof effects on the surface of the equipment. After the coating is ceramicized, it can effectively isolate the fire source and effectively prevent the building materials from generating static electricity.

[0082] It can be seen from the above three application examples that the ceramic coating proposed in the present invention has good adhesion, anti-corrosion, anti-oxidation and waterproof effects on building materials, especially improves the fire resistance, isolates the fire source after ceramicization, and can effectively prevent the building materials from generating static electricity. At the same time, the proposed preparation method has a simple process and is easy to implement.

[0083] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ceramic coating liquid, characterized in that: The invention comprises the following components calculated in parts by weight: 10-20 parts of new polymer silicone rubber material, 1-5 parts of ceramic-forming component, 0.1-0.5 parts of flame retardant, 0.01-0.2 parts of anti-precipitation agent, 0.01-0.05 parts of filler, 0.1-0.2 parts of calcium fluoride, 0.001-0.005 parts of rust inhibitor and 50-100 parts of solvent.

2. A ceramic coating liquid according to claim 1, characterized in that: The novel polymer silicone rubber material is one or more of dimethyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, fluorosilicone, nitrile silicone rubber, 107 room temperature vulcanized silicone rubber and high phenyl silicone rubber.

3. A ceramic coating liquid according to claim 1, characterized in that: The porcelain-forming ingredients are one or more of clay, quartz, feldspar, fumed silica, kaolin, wollastonite, glass powder and silicate.

4. A ceramic coating liquid according to claim 1, characterized in that: The flame retardant is one or more of melamine, melamine cyanurate, antimony trioxide, aluminum hydroxide type I, modified magnesium hydroxide, and zinc borate.

5. A ceramic coating liquid according to claim 1, characterized in that: The filler is one or more of mica, kaolin, alumina and calcium oxide.

6. A ceramic coating liquid according to claim 1, characterized in that: The rust inhibitor is one or more of methacrylic acid, polymerized aluminum oxide, triethanolamine, zinc stearate, and sodium benzoate.

7. A ceramic coating liquid according to claim 1, characterized in that: The anti-precipitation agent is one or more of organic modified bentonite, fumed silica, BYK anti-precipitation agent, non-ionic polyoxyethylene fatty amine (alcohol), and fine calcium carbonate.

8. A ceramic coating liquid according to claim 1, characterized in that: The solvent is one or more of petroleum ether, dichloromethane, ethyl acetate, ethanol and isopropanol.

9. A method for preparing the ceramic coating liquid as claimed in claim 1, characterized in that: The steps include: S1: Weigh 10-20 parts of the new polymer silicone rubber material, cut it into 5×5×5mm blocks with a knife and put it into a beaker, then add 10-100 parts of solvent, stir on a constant temperature magnetic stirrer to obtain a dissolved sample Y; S2: Weigh 1-5 parts of the porcelain-forming component and 0.1-0.5 parts of the flame retardant, fix them on a disperser and stir them uniformly to obtain a uniform solution A; S3: Weigh 0.01-0.05 parts of filler, 0.1-0.2 parts of calcium fluoride, and 0.001-0.005 parts of rust inhibitor, add them to the solution A obtained in the above step, and disperse them evenly; S4: Weigh 0.01-0.2 parts of an anti-precipitation agent, add them to the mixed solution, adjust the speed to 1000 r / min, stir evenly, and obtain a ceramic coating liquid B; S5: The ceramic coating liquid B is finely ground using a sand mill for 15 minutes, and then filtered using a 200-mesh filter cloth to obtain a ceramic coating liquid.

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