High-temperature-resistant ladle coating and production process thereof

Abstract

The invention discloses a high-temperature-resistant ladle coating and a production process thereof, and relates to the technical field of coatings. The coating comprises a ladle base material and a high-temperature-resistant coating, and the high-temperature-resistant coating comprises the following raw materials in parts by weight: 20-35 parts of methyl phenyl high-temperature-resistant silicon resin, 10-25 parts of graphene modified boron nitride, 5-7 parts of tungsten oxide, 5-7 parts of molybdenum oxide and 2-4 parts of an additive. The preparation method comprises the following steps: polishing, cleaning and drying the ladle base material for later use; weighing methyl phenyl high-temperature-resistant silicon resin, graphene modified boron nitride, tungsten oxide, molybdenum oxide and an additive in parts by weight, and uniformly mixing and stirring the raw materials to obtain a high-temperature-resistant coating; the high-temperature-resistant coating is sprayed to the surface of the base material, the high-temperature-resistant coating is sprayed two times in total, the time interval between the first time of spraying and the second time of spraying is 15-20 min, and after the coating is dried, the high-temperature-resistant ladle coating is obtained. The material ladle coating provided by the invention not only has relatively high high temperature resistance, but also has excellent wear resistance and corrosion resistance.

Description

Technical Field

[0001] The present application relates to the field of coating technology, and in particular to a high temperature resistant material scoop coating and a production process thereof. Background Art

[0002] The line-type machine, also known as the line-type bottle making machine, is a professional equipment used for the manufacture of glass bottles and cans. It is designed based on the principle of automation and can realize the processes including blank feeding, mouth formation, primary molded bottle, mold flipping and demoulding, primary mold and mold cooling, bottle and can removal, and kiln thermal cleaning, etc. The production process is fully automated.

[0003] The ladle of the row machine is a key component in the row bottle making machine, which is mainly used to store and distribute molten glass. In the process of glass bottle production, the molten glass will be poured into the ladle, and then the glass will be quantitatively distributed to each bottle making mold through a specific mechanism to form the initial shape of the glass bottle. Therefore, the design of the ladle should take into account factors such as the fluidity of the glass liquid, the uniformity of distribution, and the cooling speed to ensure the stable quality of the produced glass bottles.

[0004] However, since the temperature of the molten glass is far more than 1000°C, this places extremely stringent requirements on the high temperature resistance of the ladle material that is in direct contact with the glass. At present, although some ladle materials on the market can meet basic operating requirements, when working in a high temperature environment for a long time, their materials often age, deform, or even crack rapidly due to insufficient high temperature resistance, resulting in a greatly shortened service life. This not only increases production costs, but may also interrupt the production process due to sudden failures, affecting production efficiency and safety. In order to solve this problem, improving the high temperature resistance of the ladle has become a technical problem that needs to be overcome urgently. Summary of the invention

[0005] In order to improve the high temperature resistance of the material of the scoop and extend its service life, the present application provides a high temperature resistant scoop coating and a production process thereof.

[0006] The present application provides a high temperature resistant scoop coating, which adopts the following technical solution: A high-temperature resistant material scoop coating, the coating comprising a material scoop substrate and a high-temperature resistant coating, the raw materials of the high-temperature resistant coating comprising, by weight: 20-35 parts of methylphenyl high-temperature resistant silicone resin, 10-25 parts of graphene-modified boron nitride, 5-7 parts of tungsten oxide, 5-7 parts of molybdenum oxide, and 2-4 parts of additives.

[0007] By adopting the above technical scheme, methylphenyl high temperature resistant silicone resin is used as silicone resin, and mixed filler graphene is modified with boron nitride, tungsten oxide and molybdenum oxide to obtain a coating with strong high temperature resistance. It is used on a high temperature resistant material scoop substrate. The obtained material scoop coating can withstand high temperatures above 1500°C, and the coating also has strong wear resistance and corrosion resistance, which effectively extends the service life of the material scoop coating. Methylphenyl silicone resin has strong high temperature resistance and corrosion resistance, and is not easy to fall off and crack; tungsten oxide and molybdenum oxide have extremely high melting points and excellent thermal stability. At high temperatures, the coating structure stability can be maintained, which significantly enhances the high temperature resistance and durability of the coating; boron nitride has good high temperature stability and can maintain its performance unchanged in extreme high temperature environments. After the boron nitride is modified by graphene oxide, the high temperature stability and wear resistance of the material are further enhanced, and the temperature tolerance of the coating is improved, which is suitable for the working environment of the material scoop.

[0008] Preferably, the methylphenyl high temperature resistant silicone resin is prepared from the following raw materials in parts by weight: 16.8-33.6 parts of diphenyldimethoxysilane, 6.1-12.2 parts of methyltrimethoxysilane, 7.6-15.2 parts of phenyltrimethoxysilane, 4.7-9.4 parts of dimethyldimethoxysilane, 55-100 parts of toluene, 55-100 parts of xylene, 0.025-0.05 parts of hydrochloric acid, 19-38 parts of deionized water, and 0.02-0.04 parts of a polycondensation catalyst.

[0009] By adopting the above technical scheme, the present application uses methyltrimethoxysilane, dimethyldimethoxysilane, phenyltrimethoxysilane and diphenyldimethoxysilane as raw materials, and obtains methylphenyl silicone resin with good temperature resistance, high viscosity and long storage period through hydrolysis and polycondensation reaction, which is suitable for the high temperature environment of the row machine material scoop.

[0010] Preferably, the polycondensation catalyst is prepared from the following raw materials in parts by weight: 0.001-0.0003 parts of butyl titanate, 0.001-0.0003 parts of tri(pentafluorophenyl)borane, and 4.5-8.5 parts of toluene.

[0011] Preferably, the graphene-modified boron nitride is prepared from the following raw materials in parts by weight: 5-10 parts of hydroxylated boron nitride, 10-20 parts of silane-modified graphene oxide, 90-160 parts of ethanol, 80-150 parts of deionized water, and 12-24 parts of acetic acid.

[0012] By adopting the above technical scheme, graphene oxide is modified by a silane coupling agent so that its surface has alcoholic hydroxyl groups, which are reacted with the hydroxyl groups on the surface of hydroxylated boron nitride to connect graphene oxide to boron nitride, thereby further enhancing the thermal stability, dispersibility and interface compatibility of boron nitride.

[0013] Preferably, the silane-modified graphene oxide is composed of the following raw materials in parts by weight: 10-20 parts of graphene oxide, 200-300 parts of N,N-dimethylformamide, 50-100 parts of silane coupling agent KH-570, and 20-40 parts of dicyclohexylcarbodiimide.

[0014] Preferably, the hydroxylated boron nitride is composed of the following raw materials in parts by weight: 50-100 parts of sodium hydroxide solution and 5-10 parts of nano boron nitride.

[0015] Preferably, the ladle substrate material is one of ceramics, nickel-based high-temperature alloy materials, and carbon / carbon composite materials.

[0016] By adopting the above technical solutions, ceramics, nickel-based high-temperature alloy materials, and carbon / carbon composite materials have high strength and excellent high-temperature resistance, can maintain good strength and toughness under high temperature conditions, and are suitable for use in row machine material ladles in high-temperature environments.

[0017] The present application also provides a preparation process of a high temperature resistant material scoop coating, which adopts the following technical solution: A production process for a high temperature resistant scoop coating comprises the following steps: Grind, clean and dry the base material of the scoop and set it aside; Weigh methylphenyl high temperature resistant silicone resin, graphene modified boron nitride, tungsten oxide, molybdenum oxide, and additives according to weight, mix and stir the above raw materials evenly to obtain a high temperature resistant coating; Spray the high temperature resistant coating on the surface of the substrate material. Spray two coats of the high temperature resistant coating. The time interval between the first coat and the second coat is 15-20 minutes. After the coating is dry, a high temperature resistant coating is obtained.

[0018] Preferably, the preparation method of the methylphenyl high temperature resistant silicone resin comprises the following steps: S1. Dissolve diphenyldimethoxysilane, methyltrimethoxysilane, phenyltrimethoxysilane and dimethyldimethoxysilane in part of toluene, and stir to obtain a mixed solution; add hydrochloric acid into deionized water, stir to dissolve, and obtain a hydrochloric acid solution, and then drop the hydrochloric acid solution into the mixed solution. After the dropwise addition is completed, heat to 62-70° C. and reflux for reaction for 1.5-3.5 hours, then heat to 100-120° C., reflux for dehydration and deacidification for 2-3 hours, stop the reaction, and obtain a silicone resin prepolymer; S2. Add part of xylene and polycondensation catalyst to the silicone resin prepolymer obtained in S1, stir evenly and then heat to 120-130°C for reaction, stop heating after reflux for 13-17h, cool down and add remaining xylene and toluene to obtain methylphenyl high temperature resistant silicone resin.

[0019] Preferably, the method for preparing the graphene-modified boron nitride comprises the following steps: The silane-modified graphene oxide is dispersed in ethanol, and then deionized water and acetic acid are added, and the mixture is stirred at room temperature for 2-4 hours to obtain a reaction solution. The hydroxylated boron nitride is then added to the reaction solution, and the mixture is refluxed at 75-85°C for 6-10 hours. After the reaction is completed, the product is filtered and washed multiple times, and then dried, ground and sieved to obtain graphene-modified boron nitride.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. This application uses methyltrimethoxysilane, dimethyldimethoxysilane, phenyltrimethoxysilane and diphenyldimethoxysilane as raw materials, and obtains methylphenyl silicone resin with good temperature resistance, high viscosity and long storage period through hydrolysis and polycondensation reaction, which is suitable for the high temperature environment of the row machine material scoop; 2. In the present application, graphene oxide is modified by a silane coupling agent so that its surface has alcoholic hydroxyl groups, which are reacted with the hydroxyl groups on the surface of hydroxylated boron nitride to connect graphene oxide to boron nitride, thereby further enhancing the thermal stability, dispersibility and interface compatibility of boron nitride; 3. This application adds tungsten oxide and molybdenum oxide as coating fillers. Tungsten oxide and molybdenum oxide have extremely high melting points and excellent thermal stability. At high temperatures, they can maintain the structural stability of the coating, significantly enhancing the high temperature resistance and durability of the coating. DETAILED DESCRIPTION

[0021] The present application is further described in detail below with reference to the embodiments.

[0022] Preparation Example Preparation Example 1 Methylphenyl high temperature resistant silicone resin Preparation Example 1.1 S0. 0.001 g of butyl titanate and 0.001 g of tri(pentafluorophenyl)borane were mixed in equal amounts, dissolved in 4.5 g of dry toluene, stirred evenly, and aged for 48 h to obtain a polycondensation catalyst; S1. Dissolve 16.8g of diphenyldimethoxysilane, 6.1g of methyltrimethoxysilane, 7.6g of phenyltrimethoxysilane and 4.7g of dimethyldimethoxysilane in 35g of toluene, and stir to obtain a mixed solution; add 0.025g of hydrochloric acid with a mass fraction of 35% to 19g of deionized water, stir and dissolve to obtain a hydrochloric acid solution, and then drop the hydrochloric acid solution into the mixed solution. After the dropwise addition is completed, heat to 62°C for reflux reaction for 1.5h, then heat to 100°C, reflux dehydration and deacidification for 2h, stop the reaction, and obtain a silicone resin prepolymer; S2. Add 35g of xylene and 0.02g of the condensation catalyst obtained from S1 to the silicone resin prepolymer obtained from S1, stir evenly and then heat to 120°C for reaction. After reflux for 13h, stop heating, cool down and add the remaining 20g of xylene and 20g of toluene to obtain methylphenyl high temperature resistant silicone resin.

[0023] Preparation Example 1.2 S0. 0.002 g of butyl titanate and 0.002 g of tri(pentafluorophenyl)borane were mixed in equal amounts, dissolved in 6.5 g of dry toluene, stirred evenly, and aged for 54 h to obtain a polycondensation catalyst; S1. Dissolve 25.2g of diphenyldimethoxysilane, 9.15g of methyltrimethoxysilane, 11.4g of phenyltrimethoxysilane and 7.1g of dimethyldimethoxysilane in 45g of toluene, and stir to obtain a mixed solution; add 0.038g of hydrochloric acid with a mass fraction of 35% into 28.5g of deionized water, stir and dissolve to obtain a hydrochloric acid solution, and then drop the hydrochloric acid solution into the mixed solution. After the dropwise addition is completed, heat to 66°C for reflux reaction for 2.5h, then heat to 110°C, reflux for dehydration and deacidification for 2.5h, stop the reaction, and obtain a silicone resin prepolymer; S2. Add 45g of xylene and 0.03g of condensation catalyst to the silicone resin prepolymer obtained in S1, stir evenly and heat to 125°C for reaction. Stop heating after reflux for 15h, cool down and add the remaining 30g of xylene and 30g of toluene to obtain methylphenyl high temperature resistant silicone resin.

[0024] Preparation Example 1.3 S0. 0.003 g of butyl titanate and 0.003 g of tri(pentafluorophenyl)borane were mixed in equal amounts, dissolved in 8.5 g of dry toluene, stirred evenly, and aged for 60 h to obtain a polycondensation catalyst; S1. Dissolve 33.6g of diphenyldimethoxysilane, 12.2g of methyltrimethoxysilane, 15.2g of phenyltrimethoxysilane and 9.4g of dimethyldimethoxysilane in 60g of toluene, and stir to obtain a mixed solution; add 0.05g of hydrochloric acid with a mass fraction of 35% to 38g of deionized water, stir and dissolve to obtain a hydrochloric acid solution, and then drop the hydrochloric acid solution into the mixed solution. After the dropwise addition is completed, heat to 70°C for reflux reaction for 3.5h, then heat to 120°C, reflux dehydration and deacidification for 3h, stop the reaction, and obtain a silicone resin prepolymer; S2. Add 60g of xylene and 0.04g of condensation catalyst to the silicone resin prepolymer obtained in S1, stir evenly and then heat to 130°C for reaction. After reflux for 17h, stop heating, cool down and add the remaining 40g of xylene and 40g of toluene to obtain methylphenyl high temperature resistant silicone resin.

[0025] Preparation Example 2 Graphene-modified boron nitride Preparation Example 2.1 S1. Add 5 g of nano boron nitride to 50 g of 5 mol / L sodium hydroxide solution and react at 120° C. for 24 h. After the reaction, wash the product with deionized water until it is neutral, and then vacuum dry it in a vacuum drying oven at 80° C. for 5 h. Grind and sieve the product to obtain hydroxylated boron nitride. S2. 10 g of graphene oxide was added to 200 g of N, N-dimethylformamide, and ultrasonically dispersed for 3 h, followed by adding 50 g of silane coupling agent KH-570 and 20 g of dicyclohexylcarbodiimide, and then refluxed at 75 ° C for 8 h; after the reaction, vacuum filtration was performed through a PVDF filter membrane, and then the solid was washed with tetrahydrofuran and anhydrous ethanol, and after drying, it was ground and sieved to obtain silane-modified graphene oxide; S3. Disperse 10 g of silane-modified graphene oxide prepared by S2 in 90 g of ethanol, then add 80 g of deionized water and 12 g of acetic acid, stir at room temperature for 2 h to obtain a reaction solution, then add 5 g of hydroxylated boron nitride prepared by S1 to the reaction solution, reflux at 80 ° C for 5 h, after the reaction is completed, filter and wash with ethanol and deionized water for multiple times, dry, grind and sieve to obtain graphene-modified boron nitride.

[0026] Preparation Example 2.2 S1. 7.5 g of nano boron nitride was added to 75 g of a 5 mol / L sodium hydroxide solution and reacted at 130° C. for 26 h. After the reaction, the product was washed with deionized water until neutral, and then vacuum dried in a vacuum drying oven at 85° C. for 6.5 h. The product was ground and sieved to obtain hydroxylated boron nitride. S2. 15 g of graphene oxide was added to 250 g of N, N-dimethylformamide, and ultrasonically dispersed for 3.5 h, followed by adding 75 g of silane coupling agent KH-570 and 30 g of dicyclohexylcarbodiimide, and then refluxed at 80 ° C for 9 h; after the reaction, vacuum filtration was performed through a PVDF filter membrane, and then the solid was washed with tetrahydrofuran and anhydrous ethanol, dried, and then ground and sieved to obtain silane-modified graphene oxide; S3. Disperse 15 g of silane-modified graphene oxide prepared by S2 in 125 g of ethanol, then add 115 g of deionized water and 18 g of acetic acid, stir at room temperature for 3 h to obtain a reaction solution, then add 7.5 g of hydroxylated boron nitride prepared by S1 to the reaction solution, reflux at 85°C for 6 h, after the reaction is completed, filter and wash with ethanol and deionized water for multiple times, dry, grind and sieve to obtain graphene-modified boron nitride.

[0027] Preparation Example 2.3 S1. 10 g of nano boron nitride was added to 100 g of a 5 mol / L sodium hydroxide solution and reacted at 140° C. for 28 h. After the reaction, the product was washed with deionized water until neutral, and then vacuum dried in a vacuum drying oven at 90° C. for 8 h. The product was ground and sieved to obtain hydroxylated boron nitride. S2. 20 g of graphene oxide was added to 300 g of N, N-dimethylformamide, ultrasonically dispersed for 4 h, then 100 g of silane coupling agent KH-570 and 40 g of dicyclohexylcarbodiimide were added, and then refluxed at 85 ° C for 10 h; after the reaction, vacuum filtration was performed through a PVDF filter membrane, and then the solid was washed with tetrahydrofuran and anhydrous ethanol, dried, and then ground and sieved to obtain silane-modified graphene oxide; S3. Disperse 20 g of silane-modified graphene oxide prepared by S2 in 160 g of ethanol, then add 150 g of deionized water and 24 g of acetic acid, stir at room temperature for 4 hours to obtain a reaction solution, then add 10 g of hydroxylated boron nitride prepared by S1 to the reaction solution, reflux at 90°C for 7 hours, after the reaction is completed, filter and wash with ethanol and deionized water for multiple times, dry, grind and sieve to obtain graphene-modified boron nitride. Example

[0028] Example 1 S1. The surface of the ceramic scoop substrate material was polished with carbide cinnamon water sandpaper, and then cleaned with a mixed solution of anhydrous ethanol and acetone in a mass ratio of 3:1, and then dried to obtain a pretreated scoop substrate for standby use; S2. Weigh 27.5 g of the methylphenyl high temperature resistant silicone resin prepared in Preparation Example 1.1, 17.5 g of the graphene-modified boron nitride prepared in Preparation Example 2.1, 6 g of tungsten oxide, 6 g of molybdenum oxide, and 3 g of an additive by weight, and mix and stir the above raw materials at a temperature of 50 ° C and a speed of 400 rpm to obtain a high temperature resistant coating; the additive used in this embodiment is diethylenetriamine; S3. Spray the high temperature resistant coating on the pretreated surface of the scoop substrate. Spray two coats of the high temperature resistant coating. The time interval between the first and second coats is 15 minutes. After the coating dries, the high temperature resistant scoop coating is obtained.

[0029] Example 2 S1. The ceramic scoop substrate material surface was polished with carbide cinnamon water sandpaper, cleaned with a mixed solution of anhydrous ethanol and acetone in a mass ratio of 4:1, and then dried to obtain a pretreated scoop substrate for standby use; S2. Weigh 27.5 g of the methylphenyl high temperature resistant silicone resin prepared in Preparation Example 1.1, 17.5 g of the graphene-modified boron nitride prepared in Preparation Example 2.1, 6 g of tungsten oxide, 6 g of molybdenum oxide, and 3 g of an additive by weight, and mix and stir the above raw materials at a temperature of 55 ° C and a speed of 500 rpm to obtain a high temperature resistant coating; the additive used in this embodiment is diethylenetriamine; S3. Spray the high temperature resistant coating on the pretreated surface of the scoop substrate. Spray two coats of the high temperature resistant coating. The time interval between the first and second coats is 17 minutes. After the coating dries, the high temperature resistant scoop coating is obtained.

[0030] Example 3 S1. The ceramic scoop substrate material surface was polished with carbide cinnamon water sandpaper, cleaned with a mixed solution of anhydrous ethanol and acetone in a mass ratio of 5:1, and then dried to obtain a pretreated scoop substrate standby; S2. Weigh 27.5 g of the methylphenyl high temperature resistant silicone resin prepared in Preparation Example 1.1, 17.5 g of the graphene-modified boron nitride prepared in Preparation Example 2.1, 6 g of tungsten oxide, 6 g of molybdenum oxide, and 3 g of an additive by weight, and mix and stir the above raw materials at a temperature of 60 ° C and a speed of 600 rpm to obtain a high temperature resistant coating; the additive used in this embodiment is diethylenetriamine; S3. Spray the high temperature resistant coating on the pretreated surface of the scoop substrate. Spray two coats of the high temperature resistant coating. The time interval between the first and second coats is 20 minutes. After the coating dries, the high temperature resistant scoop coating is obtained.

[0031] Example 4 The difference between Example 4 and Example 1 is that the mass of the methylphenyl high temperature resistant silicone resin used in Example 4 is 20 g, and the raw material comes from Preparation Example 1.1.

[0032] Example 5 The difference between Example 5 and Example 1 is that the mass of the methylphenyl high temperature resistant silicone resin used in Example 5 is 35 g, and the raw material comes from Preparation Example 1.1.

[0033] Example 6 The difference between Example 6 and Example 1 is that the mass of the methylphenyl high temperature resistant silicone resin used in Example 6 is 27.5 g, and the raw material comes from Preparation Example 1.2.

[0034] Example 7 The difference between Example 7 and Example 1 is that the mass of the methylphenyl high temperature resistant silicone resin used in Example 7 is 27.5 g, and the raw material comes from Preparation Example 1.3.

[0035] Example 8 The difference between Example 8 and Example 1 is that the mass of graphene-modified boron nitride used in Example 8 is 10 g, and the raw material comes from Preparation Example 2.1.

[0036] Example 9 The difference between Example 9 and Example 1 is that the mass of graphene-modified boron nitride used in Example 9 is 25 g, and the raw material comes from Preparation Example 2.1.

[0037] Example 10 The difference between Example 10 and Example 1 is that the mass of graphene-modified boron nitride used in Example 10 is 17.5 g, and the raw material comes from Preparation Example 2.2.

[0038] Embodiment 11 The difference between Example 11 and Example 1 is that the mass of graphene-modified boron nitride used in Example 11 is 17.5 g, and the raw material comes from Preparation Example 2.3.

[0039] Example 12 The difference between Example 12 and Example 1 is that the mass of tungsten oxide used in Example 12 is 5 g and the mass of molybdenum oxide is 5 g.

[0040] Embodiment 13 The difference between Example 13 and Example 1 is that the mass of tungsten oxide used in Example 13 is 7 g and the mass of molybdenum oxide is 7 g.

[0041] Embodiment 14 The difference between Example 14 and Example 1 is that the material of the scoop substrate used in Example 14 is a nickel-based high-temperature alloy material.

[0042] Embodiment 15 The difference between Example 15 and Example 1 is that the scoop substrate material used in Example 15 is a carbon / carbon composite material.

[0043] Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that the mass of the methylphenyl high temperature resistant silicone resin used in Comparative Example 1 is 10 g, and the raw material comes from Preparation Example 1.1.

[0044] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that the mass of the methylphenyl high temperature resistant silicone resin used in Comparative Example 2 is 45 g, and the raw material comes from Preparation Example 1.1.

[0045] Comparative Example 3 The difference between Comparative Example 3 and Example 1 is that the mass of graphene-modified boron nitride used in Comparative Example 3 is 5 g, and the raw material comes from Preparation Example 2.1.

[0046] Comparative Example 4 The difference between Comparative Example 4 and Example 1 is that the mass of graphene-modified boron nitride used in Comparative Example 4 is 30 g, and the raw material comes from Preparation Example 2.1.

[0047] Comparative Example 5 The difference between Comparative Example 5 and Example 1 is that the mass of tungsten oxide used in Comparative Example 5 is 3 g, and the mass of molybdenum oxide is 3 g.

[0048] Comparative Example 6 The difference between Comparative Example 6 and Example 1 is that the mass of tungsten oxide used in Comparative Example 6 is 9 g, and the mass of molybdenum oxide is 9 g.

[0049] Performance testing 1. The wear resistance of the coatings of the scoops obtained in Examples 1-15 and Comparative Examples 1-6 was measured using GB / T3960-1983 "Test Methods for Sliding Friction and Wear of Plastics". The results are shown in Table 1.

[0050] 2. The coatings of the scoops obtained in Examples 1-15 and Comparative Examples 1-6 were placed in an electric heating furnace at 1500° C. for 48 hours to observe the changes in the coating appearance.

[0051] The specific test results are as follows: Table 1 Performance test results <![CDATA[Wear amount / cm 3 > High temperature resistance Example 1 0.0008 No change Example 2 0.0006 No change Example 3 0.0009 No change Example 4 0.0009 No change Example 5 0.0010 No change Example 6 0.0008 No change Example 7 0.0010 No change Example 8 0.0014 No change Example 9 0.0011 No change Example 10 0.0007 No change Embodiment 11 0.0012 No change Example 12 0.0012 No change Embodiment 13 0.0010 No change Embodiment 14 0.0006 No change Embodiment 15 0.0009 No change Comparative Example 1 0.0028 Slightly foamy Comparative Example 2 0.0012 Slightly foamy Comparative Example 3 0.156 Obvious bubbling Comparative Example 4 0.062 Slightly foamy Comparative Example 5 0.045 Minor cracks Comparative Example 6 0.038 Minor cracks It can be seen from the test results in Table 1 that the scoop coating provided by the present application has high wear resistance and high temperature resistance.

[0052] It can be seen from the test results of Examples 1-3 that the formula and preparation method of the scoop coating provided in the present application are conducive to obtaining a scoop coating with lower wear and stronger high temperature resistance.

[0053] It can be seen from the test results of Examples 1, 4, 5, 6, 7 and Comparative Examples 1 and 2 that the methylphenyl high temperature resistant silicone resin provided in the present application can effectively improve the high temperature resistance of the material scoop coating, and the preferred weight of the methylphenyl high temperature resistant silicone resin is 20-35 parts. When the weight of the methylphenyl high temperature resistant silicone resin is lower or higher than this range, the coating will slightly bubble, indicating that the high temperature resistance of the coating is reduced.

[0054] It can be seen from the test results of Examples 1, 8, 9, 10, 11 and Comparative Examples 3 and 4 that the graphene-modified boron nitride provided in the present application can effectively improve the high temperature resistance and wear resistance of the material scoop coating, and the preferred weight proportion of the graphene-modified boron nitride is 10-25 parts. When the weight proportion of the graphene-modified boron nitride is lower or higher than this range, blistering will occur in the coating, and the wear amount will increase significantly, indicating that the high temperature resistance and wear resistance of the coating are reduced.

[0055] It can be seen from the test results of Examples 1, 12, 13 and Comparative Examples 5 and 6 that the tungsten oxide and molybdenum oxide fillers provided in the present application can effectively improve the high temperature resistance and wear resistance of the material scoop coating, and the preferred weight proportion of tungsten oxide is 5-7 parts and the weight proportion of molybdenum oxide is 5-7 parts. When the weight proportions of tungsten oxide and molybdenum oxide are lower or higher than this range, slight cracks will occur in the coating and the wear amount will increase, indicating that the high temperature resistance and wear resistance of the coating are reduced.

[0056] It can be seen from the test results of Examples 1, 14 and 15 that the scoop substrate materials provided in the present application are all conducive to obtaining a scoop coating with lower wear and stronger high temperature resistance.

[0057] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A high temperature resistant material scoop coating, characterized in that: The coating comprises a scoop substrate and a high temperature resistant coating, wherein the raw materials of the high temperature resistant coating comprise, by weight: 20-35 parts of methylphenyl high temperature resistant silicone resin, 10-25 parts of graphene modified boron nitride, 5-7 parts of tungsten oxide, 5-7 parts of molybdenum oxide, and 2-4 parts of additives.

2. A high temperature resistant ladle coating according to claim 1, characterized in that: The methylphenyl high temperature resistant silicone resin is prepared from the following raw materials in parts by weight: 16.8-33.6 parts of diphenyldimethoxysilane, 6.1-12.2 parts of methyltrimethoxysilane, 7.6-15.2 parts of phenyltrimethoxysilane, 4.7-9.4 parts of dimethyldimethoxysilane, 55-100 parts of toluene, 55-100 parts of xylene, 0.025-0.05 parts of hydrochloric acid, 19-38 parts of deionized water, and 0.02-0.04 parts of a polycondensation catalyst.

3. A high temperature resistant ladle coating according to claim 2, characterized in that: The polycondensation catalyst is prepared from the following raw materials in parts by weight: 0.001-0.0003 parts of butyl titanate, 0.001-0.0003 parts of tri(pentafluorophenyl)borane, and 4.5-8.5 parts of toluene.

4. The high temperature resistant ladle coating according to claim 1, characterized in that: The graphene-modified boron nitride is prepared from the following raw materials in parts by weight: 5-10 parts of hydroxylated boron nitride, 10-20 parts of silane-modified graphene oxide, 90-160 parts of ethanol, 80-150 parts of deionized water, and 12-24 parts of acetic acid.

5. The high temperature resistant ladle coating according to claim 4, characterized in that: The silane-modified graphene oxide is composed of the following raw materials in parts by weight: 10-20 parts of graphene oxide, 200-300 parts of N,N-dimethylformamide, 50-100 parts of silane coupling agent KH-570, and 20-40 parts of dicyclohexylcarbodiimide.

6. A high temperature resistant ladle coating according to claim 5, characterized in that: The hydroxylated boron nitride is composed of the following raw materials in parts by weight: 50-100 parts of sodium hydroxide solution and 5-10 parts of nano boron nitride.

7. The high temperature resistant ladle coating according to claim 1, characterized in that: The ladle substrate material is one of ceramics, nickel-based high-temperature alloy materials, and carbon / carbon composite materials.

8. A production process for a high temperature resistant ladle coating according to any one of claims 1 to 7, characterized in that: The following steps are involved: Grind, clean and dry the base material of the scoop and set it aside; Weigh methylphenyl high temperature resistant silicone resin, graphene modified boron nitride, tungsten oxide, molybdenum oxide, and additives according to weight, mix and stir the above raw materials evenly to obtain a high temperature resistant coating; Spray the high temperature resistant coating on the surface of the substrate material. Spray two coats of the high temperature resistant coating. The time interval between the first coat and the second coat is 15-20 minutes. After the coating is dry, a high temperature resistant coating is obtained.

9. The production process of a high temperature resistant scoop coating according to claim 8, characterized in that: The preparation method of the methylphenyl high temperature resistant silicone resin comprises the following steps: S1. Dissolve diphenyldimethoxysilane, methyltrimethoxysilane, phenyltrimethoxysilane and dimethyldimethoxysilane in part of toluene, and stir to obtain a mixed solution; add hydrochloric acid into deionized water, stir to dissolve, and obtain a hydrochloric acid solution, and then drop the hydrochloric acid solution into the mixed solution. After the dropwise addition is completed, heat to 62-70° C. and reflux for reaction for 1.5-3.5 hours, then heat to 100-120° C., reflux for dehydration and deacidification for 2-3 hours, stop the reaction, and obtain a silicone resin prepolymer; S2. Add part of xylene and polycondensation catalyst to the silicone resin prepolymer obtained in S1, stir evenly and then heat to 120-130°C for reaction, stop heating after reflux for 13-17h, cool down and add remaining xylene and toluene to obtain methylphenyl high temperature resistant silicone resin.

10. The production process of a high temperature resistant ladle coating according to claim 8, characterized in that: The preparation method of the graphene-modified boron nitride comprises the following steps: The silane-modified graphene oxide is dispersed in ethanol, and then deionized water and acetic acid are added, and the mixture is stirred at room temperature for 2-4 hours to obtain a reaction solution. The hydroxylated boron nitride is then added to the reaction solution, and the mixture is refluxed at 75-85°C for 6-10 hours. After the reaction is completed, the product is filtered and washed multiple times, and then dried, ground and sieved to obtain graphene-modified boron nitride.