High temperature anticorrosion paint and its manufacturing method

Abstract

To provide a high-temperature resistant anticorrosive coating material and a method for producing the same.SOLUTION: A high-temperature resistant anticorrosive coating material contains 20 wt.% to 40 wt.% of a heat-resistant silicone resin, 30 wt.% to 45 wt.% of a filler, 0.5 wt. to 5 wt.% of a film-forming auxiliary, and 15 wt.% to 30 wt.% of a solvent. The filler contains a metal filler, and a flake filler, and a weight ratio of the metal filler to the flake filler is 1:2 to 1:3.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a high-temperature corrosion-resistant coating material and a method for producing the same, and more particularly to an organic high-temperature corrosion-resistant coating material and a method for producing the same. [Background technology]

[0002] In chemical factories and plants, metal tanks are often used to store chemicals, and pipelines are used to connect various pieces of equipment in chemical-related processes. To improve the durability of metal tanks, pipelines, and equipment, conventional techniques involve coating the surfaces of metal tanks, pipelines, and equipment with inorganic ceramic-based anticorrosion paints.

[0003] However, the adhesion between inorganic ceramic anticorrosion coatings and organic surface layer coatings is poor, and short-term use can cause problems such as pinholes, bubbles, cracks, and poor adhesion on the surface, while long-term use can cause peeling or damage to the coating. Furthermore, high temperatures are often used in chemical factories and production lines, so anticorrosion coatings still require high-temperature resistance.

[0004] Therefore, it is an important task for this project to overcome the above-mentioned shortcomings by improving the components to improve the adhesion of the paint and achieve effects such as high temperature resistance, corrosion prevention, energy saving and carbon reduction. Summary of the Invention [Problem to be solved by the invention]

[0005] The technical problem to be solved by the present invention is to provide a high-temperature corrosion-resistant coating material in response to the shortcomings of the prior art. [Means for solving the problem]

[0006] The high-temperature, corrosion-resistant coating material contains 20 to 40 wt% of a heat-resistant silicone resin, 30 to 45 wt% of a filler, 0.5 to 5 wt% of a film-forming aid, and 15 to 30 wt% of a solvent. The filler includes a metal filler and a flake filler, and the weight ratio of the metal filler to the flake filler is 1:2 to 1:3.

[0007] In one embodiment of the present invention, the heat-resistant silicone resin is at least one selected from the group consisting of a methyl-phenyl-modified silicone resin, an epoxy resin-modified silicone resin, and a polyester-modified silicone resin.

[0008] In one embodiment of the present invention, the methyl-phenyl-modified silicone resin has a methyl content of 20% to 35% and a phenyl content of 65% to 80%.

[0009] In one embodiment of the present invention, the viscosity of the methyl-phenyl-modified silicone resin is 20 to 100 mm 2 / s.

[0010] In one embodiment of the present invention, the filler is at least one selected from the group consisting of aluminum powder, zinc powder, talc powder, aluminum magnesium talc, magnesium talc, glass flakes, silica talc, and combinations thereof.

[0011] In one embodiment of the present invention, the flake filler comprises magnesium talc and glass flake.

[0012] In one embodiment of the present invention, the weight ratio of the magnesium talc to the glass flakes is 2:1 to 1:2.

[0013] In one embodiment of the present invention, the flake diameter of the glass flakes is larger than the flake diameter of the magnesium talc.

[0014] In one embodiment of the present invention, the magnesium talc has a flake diameter of 3 μm to 5 μm, and the glass flakes have a flake diameter of 10 μm to 20 μm.

[0015] In one embodiment of the present invention, the film-forming aid is at least one selected from the group consisting of alcohol ethers, zirconium alcohols, mixtures of ethylene glycol monobutyl ether and dipropylene glycol butyl ether, plasticizers, and combinations thereof.

[0016] In one embodiment of the present invention, the solvent is at least one selected from the group consisting of toluene, xylene, aromatic hydrocarbon solvents, and combinations thereof.

[0017] In one embodiment of the present invention, the high-temperature-resistant corrosion-proof coating further contains a curing catalyst, and the content of the curing catalyst is 0.5 wt % to 2 wt % of the heat-resistant silicone resin.

[0018] To solve the above technical problems, one technical means adopted by the present invention provides a method for producing a high-temperature, corrosion-resistant paint. The method for producing a high-temperature, corrosion-resistant paint includes the steps of preparing 30 wt% to 45 wt% of filler so that the metal filler:flake filler (weight ratio) is 1:2 to 1:3, pre-dispersing 20 wt% to 40 wt% of heat-resistant silicone resin, the flake filler, and 0.5 wt% to 5 wt% of a film-forming aid to prepare a pre-dispersion liquid, and adding 15 wt% to 30 wt% of the metal filler and solvent to the pre-dispersion liquid and stirring until homogeneous, thereby obtaining a high-temperature, corrosion-resistant paint.

[0019] In one embodiment of the present invention, the heat-resistant silicone resin has a refractive index of 1.40 to 1.53 and a viscosity of 20 to 100 mm 2 / s viscosity.

[0020] In one embodiment of the present invention, the heat-resistant silicone resin is a methyl-phenyl-modified silicone resin, in which the methyl content is 20% to 35% and the phenyl content is 65% to 80%.

[0021] In one embodiment of the present invention, the flake filler contains magnesium talc and glass flakes, and the weight ratio of the magnesium talc to the glass flakes is 2:1 to 1:2.

[0022] In one embodiment of the present invention, the film-forming aid is at least one selected from the group consisting of alcohol ethers, zirconium alcohols, mixtures of ethylene glycol monobutyl ether and dipropylene glycol butyl ether, plasticizers, and combinations thereof.

[0023] In one embodiment of the present invention, the solvent is at least one selected from the group consisting of toluene, xylene, aromatic hydrocarbon solvents, and combinations thereof.

[0024] In one embodiment of the present invention, the method further comprises adding a curing catalyst to the high-temperature resistant corrosion-proof coating immediately before use, and the content of the curing catalyst is 0.5 wt % to 2 wt % of the heat-resistant silicone resin.

[0025] In one embodiment of the invention, the curing catalyst is an alkoxysilane. [Effects of the Invention]

[0026] As an advantageous effect of the present invention, the high-temperature corrosion-resistant coating material and its manufacturing method according to the present invention can improve the adhesion and corrosion resistance of the high-temperature corrosion-resistant coating material due to the technical features that "the filler includes a metal filler and a flake filler" and "the weight ratio of the metal filler to the flake filler is 1:2 to 1:3." DETAILED DESCRIPTION OF THE INVENTION

[0027] In order to better understand the features and technical contents of the present invention, please refer to the following detailed description of the present invention, however, the detailed description provided is only for reference and explanation, and is not intended to limit the scope of the claims of the present invention.

[0028] The "high-temperature corrosion-resistant coating material and its manufacturing method" according to an embodiment of the present invention will be described below using certain specific embodiments, and those skilled in the art will be able to understand the advantages and effects of the present invention based on the content disclosed herein. The present invention can be implemented or applied using other different specific embodiments, and various modifications and changes can be made to the details herein based on different perspectives and applications without departing from the concept of the present invention. The technical content of the present invention will be described in more detail based on the following embodiments, but the disclosed content does not limit the scope of protection of the present invention.

[0029] [First embodiment] In a first embodiment of the present invention, a high-temperature, corrosion-resistant coating material is provided, which includes a heat-resistant silicone resin, a filler, and a film-forming aid. In order to accommodate the 200°C to 300°C operating temperatures commonly encountered in chemical factories and plants, the term "high-temperature resistance" or "heat resistance" as used herein refers to the ability to withstand temperatures of approximately 450°C. The heat-resistant silicone resin may be at least one selected from the group consisting of methyl-phenyl-modified silicone resins, epoxy resin-modified silicone resins, and polyester-modified silicone resins.

[0030] More specifically, based on the total weight of the high-temperature, corrosion-resistant coating material, the content of the heat-resistant silicone resin may be 20 wt% to 40 wt%, i.e., any positive number between 20 wt% and 40 wt%. For example, it may be 20, 25, 30, 35, or 40 wt%. If the content of the heat-resistant silicone resin is less than 20 wt%, the fluidity of the high-temperature, corrosion-resistant coating material will be poor, making application difficult. If the content of the heat-resistant silicone resin is more than 40 wt%, the high-temperature resistance of the high-temperature, corrosion-resistant coating material will be insufficient. In one preferred embodiment, the content of the heat-resistant silicone resin may be 25 wt% to 35 wt%.

[0031] It is worth noting that when the heat-resistant silicone resin is a methyl-phenyl modified silicone resin, the methyl content is 20% to 35% and the phenyl content is 65% to 85% based on the total weight of the methyl and phenyl groups in the heat-resistant silicone resin, so that the viscosity is 20 to 100 mmHg. 2 A methyl-phenyl-modified silicone resin having a viscosity of 1 / s can be obtained. If the methyl content is less than 20% or the phenyl content is greater than 80%, the texture of the methyl-phenyl-modified silicone resin becomes hard. If the methyl content is greater than 35% or the phenyl content is less than 65%, the viscosity of the methyl-phenyl-modified silicone resin becomes low, making it difficult to apply and resulting in insufficient heat resistance. In one preferred embodiment, the methyl content may be 25% to 30% and the phenyl content may be 70% to 75%, so that the methyl-phenyl-modified silicone resin of the present application can achieve both optimal hardness and heat resistance.

[0032] In other words, the methyl content affects the flexibility (height) of the resin, and the phenyl content affects the heat resistance of the resin. In this invention, the effect of the ratio of methyl to phenyl in a high-temperature corrosion-resistant paint on the high-temperature corrosion-resistant paint was investigated, and the ratio of methyl to phenyl and the experimental results are shown in Table 1 below.

[0033] In Table 1, the high-temperature corrosion-resistant paint contained 27 wt% heat-resistant silicone resin, 40 wt% filler, 3 wt% film-forming aid, and 30 wt% solvent. The heat-resistant silicone resin with a 28 / 72 merti / phenyl ratio was KR500 manufactured by Shin-Etsu Chemical Co., Ltd., the heat-resistant silicone resin with a 15 / 85 merti / phenyl ratio was X-40-9227 manufactured by Shin-Etsu Chemical Co., Ltd., and the heat-resistant silicone resin with a 40 / 60 merti / phenyl ratio was KR-515 manufactured by Shin-Etsu Chemical Co., Ltd. The metal filler was aluminum powder, and the flake filler was a mixture of magnesium talc and glass flake, with a metal filler:flake filler (weight ratio) of 1:2 and a magnesium talc:glass flake (weight ratio) of 1:1. The film-forming aid was polyether-modified polydimethylsiloxane, and the solvent was toluene.

[0034] [Table 1]

[0035] In Table 1, when the methyl content was 28% and the phenyl content was 72%, the pencil hardness of the surface layer was optimal (4H), and sufficient adhesive strength and tensile strength were both achieved. That is, in one preferred embodiment of the present invention, the methyl:phenyl ratio may be 7:18. In contrast, when the methyl content was 15% and the phenyl content was 85%, the resin texture became relatively hard. When the methyl content was 40% and the phenyl content was 60%, the pencil hardness of the surface layer was too soft and the tensile strength was too low to provide sufficient adhesive strength. In one embodiment of the present invention, the specific gravity of the methyl-phenyl-modified silicone resin may be 1.08 to 1.12. The refractive index of the methyl-phenyl-modified silicone resin may be 1.40 to 1.53.

[0036] To improve the corrosion resistance of the high-temperature corrosion-resistant coating material, the high-temperature corrosion-resistant coating material of the present invention may contain a filler. Based on the total weight of the high-temperature corrosion-resistant coating material, the filler content may be 30 wt% to 45 wt%, i.e., any positive number between 30 wt% and 45 wt%. For example, it may be 30, 32, 34, 36, 38, 40, 42, 44, or 45 wt%. If the filler content is less than 30 wt%, the desired corrosion resistance cannot be obtained. If the filler content exceeds 45 wt%, the film-forming properties of the high-temperature corrosion-resistant coating material may be affected. In one preferred embodiment, the filler content may be 35 wt% to 40 wt%.

[0037] For example, the filler may be at least one selected from the group consisting of aluminum powder, zinc powder, talc powder, aluminum magnesium talc, magnesium talc, glass flake, silica talc, and combinations thereof. It is noteworthy that the high-temperature corrosion-resistant coating of the present invention uses a combination of a metal filler and a flake filler to further improve the high-temperature resistance of the high-temperature corrosion-resistant coating. The present invention investigated the effect of the ratio of metal filler to flake filler in a high-temperature corrosion-resistant coating on the high-temperature corrosion-resistant coating. The ratio of metal filler to flake filler and the experimental results are shown in Table 2 below. The formulation of the high-temperature corrosion-resistant coating in Table 2 is basically the same as the formulation in Table 1, with the only difference being that the ratio of metal filler to flake filler in Table 2 is changed. That is, the total weight of the metal filler and flake filler in the coating is still 40 wt%, but the ratio of metal filler to flake filler in the filler was changed and evaluation was performed.

[0038] [Table 2]

[0039] As shown in Table 2, when the ratio of metal filler to flake filler was 1:1, the hardness was high and the adhesive strength and tensile strength needed to be further improved. When the ratio of metal filler to flake filler was 1:4, the hardness was low and the adhesive strength was slightly improved compared to the 1:1 ratio, but the tensile strength was further deteriorated, making it prone to dripping during the application process. On the other hand, when the ratio of metal filler to flake filler was 1:2 or 1:3, the pencil hardness of the surface layer was most appropriate (4H), and sufficient adhesive strength and tensile strength were both achieved. Thus, the ratio of metal filler to flake filler according to the present invention is preferably 1:2 to 1:3.

[0040] More specifically, the flake filler may include magnesium talc and glass flakes. The flake diameter of the glass flakes is larger than that of the magnesium talc. That is, since the magnesium talc and the glass flakes differ in flake diameter, the magnesium talc with a smaller flake diameter fills the gaps between the magnesium talc with a larger flake diameter, so that the entire filler adheres more densely to the coating surface, thereby reducing the gas and water vapor permeability. Specifically, the flake diameter of the magnesium talc may be 3 μm to 5 μm, and the flake diameter of the glass flakes may be 10 μm to 20 μm. In this specification, the flake diameter refers to the average flake diameter (D 50 ) In the present invention, the effect of the ratio of magnesium talc to glass flakes in a high-temperature corrosion-resistant paint on the high-temperature corrosion-resistant paint was investigated, and the ratio of magnesium talc to glass flakes and the experimental results are shown in Table 3 below. The formulation of the high-temperature corrosion-resistant paint in Table 3 is basically the same as the formulation in Table 1, and the differences between the two were evaluated by changing the ratio of magnesium talc to glass flakes in the filler in Table 3.

[0041] [Table 3]

[0042] As shown in Table 3, when only magnesium talc or glass flakes were used, i.e., when the weight ratio of magnesium talc to glass flakes was 1:0 or 0:1, both the gas permeability and water vapor permeability were relatively high, indicating poor corrosion resistance of the high-temperature corrosion-resistant coating. On the other hand, when magnesium talc and glass flakes were used together, both the gas permeability and water vapor permeability were reduced to 7% or less, and when the weight ratio of magnesium talc to glass flakes was 2:1 to 1:2, low gas permeability and water vapor permeability were imparted to the high-temperature corrosion-resistant coating. As a result, excellent protection and corrosion resistance were achieved.

[0043] In order to avoid sagging during application of the high-temperature corrosion-resistant coating material or cracks and breakage during drying, the high-temperature corrosion-resistant coating material according to the present invention may further contain a film-forming aid. For example, the film-forming aid may be at least one selected from the group consisting of alcohol ether, zirconium alcohol, a mixture of ethylene glycol monobutyl ether and dipropylene glycol butyl ether, a plasticizer, and a combination thereof. However, the above-mentioned specific examples are merely possible examples, and the present invention is not limited thereto.

[0044] More specifically, based on the total weight of the high-temperature corrosion-resistant coating, the content of the coal-forming aid may be 0.5 wt% to 5 wt%, i.e., any positive number between 0.5 wt% and 5 wt%. For example, it may be 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, or 5 wt%. If the content of the coal-forming aid is less than 0.5 wt%, the film-forming properties of the high-temperature corrosion-resistant coating are not improved. If the content of the coal-forming aid is more than 5 wt%, the production cost of the high-temperature corrosion-resistant coating increases. In one preferred embodiment, the content of the coal-forming aid may be 2 wt% to 3.5 wt%.

[0045] More specifically, in the high-temperature, corrosion-resistant coating, a curing catalyst may be further added to the heat-resistant silicone resin. The content of the curing catalyst is 0.5 wt% to 2 wt% of the heat-resistant silicone resin, i.e., any positive number between 5 wt% and 2 wt%. For example, it may be 0.5, 1, 1.5, or 2 wt%. If the content of the curing catalyst is less than 0.5 wt%, it will not contribute to the curing effect. If the content of the curing catalyst is more than 2 wt%, the curing rate of the high-temperature, corrosion-resistant coating will be too fast, making it difficult to apply. In one embodiment, the content of the curing catalyst is 1.0 wt% to 1.5 wt% of the heat-resistant silicone resin. For example, the film-forming temperature of the heat-resistant silicone resin of the present invention may be 10°C or higher, preferably 25°C or higher.

[0046] The components contained in the high-temperature, corrosion-resistant coating material of the present invention, such as the heat-resistant silicone resin, filler, and film-forming aid, may be mixed using a solvent. To uniformly mix the components used in the high-temperature, corrosion-resistant coating material of the present invention, the solvent may be at least one selected from the group consisting of toluene, xylene, aromatic hydrocarbon solvents, and combinations thereof. In one embodiment of the present invention, the content of the solvent may be 15 wt% to 30 wt%, and preferably 20 wt% to 28 wt%, based on the total weight of the high-temperature, corrosion-resistant coating material.

[0047] [Second embodiment] In a second embodiment of the present invention, there is provided a method for producing a high-temperature corrosion-resistant paint, which includes a step of preparing a filler, a pre-dispersing step, and a mixing step. Since the filler of the present invention is of a specific type and weight ratio, when preparing the filler, 30 wt% to 45 wt% of the filler is prepared so that the weight ratio of the metal filler to the flake filler (metal filler:flake filler) is 1:2 to 1:3.

[0048] Furthermore, mixing the metal filler and the flake filler simultaneously into the resin leads to poor dispersibility, so when producing the high-temperature, corrosion-resistant coating material of the present invention, it is better to first produce a pre-dispersion liquid. In other words, the pre-dispersion liquid is obtained by pre-dispersing 20 wt% to 40 wt% of heat-resistant silicone resin, flake filler, and 0.5 wt% to 5 wt% of film-forming aid in a homogenizer. Then, the metal filler and 15 wt% to 30 wt% of solvent are added to the pre-dispersion liquid and stirred with a stirrer until uniform, thereby producing the high-temperature, corrosion-resistant coating material of the present invention.

[0049] To further explain, a curing catalyst can be added to the high-temperature, corrosion-resistant coating material before application to aid in curing of the coating layer. The content of the curing catalyst may be 0.5 wt% to 2 wt% of the heat-resistant silicone resin. For example, the curing catalyst may be an alkoxysilane. However, the above-mentioned specific examples are merely feasible examples, and the present invention is not limited thereto.

[0050] To demonstrate the high-temperature corrosion-resistant coating material of the present invention's crack-free property at high temperatures, a comparison was made between the high-temperature corrosion-resistant coating material of the present invention and an existing inorganic metal coating material. In this example, the high-temperature corrosion-resistant coating material of the present invention contained 27 wt% heat-resistant silicone resin, 40 wt% filler, 3 wt% film-forming aid, and 30 wt% solvent. The detailed components were the same as those in Table 1. The inorganic metal coating material was inorganic zinc powder. The comparison results are shown in Table 4 below.

[0051] [Table 4]

[0052] As shown in Table 4, the high-temperature corrosion-resistant coating of the present invention has higher adhesive strength and tensile strength than inorganic metal coatings, and can improve the poor adhesive strength of existing inorganic metal coatings. That is, by using an organic coating instead of an existing inorganic coating in the present invention, excellent toughness and adhesive properties can be imparted to the high-temperature corrosion-resistant coating. Specifically, the high-temperature corrosion-resistant coating of the present invention has an expansion coefficient of 25 to 50 um / m°C, and is imparted with excellent toughness and adhesive properties.

[0053] In this specification, the pencil hardness of the surface layer was measured by uniformly applying the anticorrosion coating to a flat plate with a thickness of 100 μm, and after curing and drying, rubbing the surface with pencils of different hardness until plastic deformation (dents), cohesive damage (scratches or scratches), or a combination of these appeared on the surface.

[0054] The coating adhesion test involved drawing lines on the coating using a crosshatch cutter, taping the cut coating, and then peeling off the tape. The total area of ​​the original coating was taken as 100%, and the percentage of the coating that peeled off when the tape was removed was calculated. This percentage was used to represent the degree of coating peeling and evaluate adhesion. A rating of 5B indicates that the cut edges were completely smooth and no squares of the lattice were separated. A rating of 4B indicates that the affected area (peeled area) was ≤5%. A rating of 3B indicates that the affected area (peeled area) was 5-15% of the lattice. A rating of 2B indicates that the affected area (peeled area) was 15-35% of the lattice. A rating of 1B indicates that the affected area (peeled area) was 35-65% of the lattice. A rating of 0B indicates that the affected area (peeled area) was greater than 65% of the lattice.

[0055] For the tensile strength test, the anticorrosion paint was applied to the metal layer, cured and dried to form a coating, and then subjected to high-temperature treatment at 450°C for 24 hours before the tensile strength test. That is, when peeling the coating from the metal layer, the peel force was measured using a pressure sensor, and the measurement data was taken as the tensile strength (MPa) of the anticorrosion paint after heating.

[0056] In this study, gas transmission rate and water vapor transmission rate tests were conducted using a 60 mm thick coating. Gas transmission rate (OTR) was measured according to ISO 15105-1 (23°C; 100% O2; 0% RH). Water vapor transmission rate (WVTR) was measured according to ISO 15106-2 (38°C; 90% RH).

[0057] [Advantageous Effects of the Embodiments] As an advantageous effect of the present invention, the high-temperature corrosion-resistant coating material and its manufacturing method according to the present invention can improve the adhesion and corrosion resistance of the high-temperature corrosion-resistant coating material due to the technical features that "the filler includes a metal filler and a flake filler" and "the weight ratio of the metal filler to the flake filler is 1:2 to 1:3."

[0058] More specifically, the viscosity of the composition of the present invention is 20 to 100 mmHg by adjusting the methyl content to 20 to 35% and the phenyl content to 65 to 85% based on the total weight of the methyl group and the phenyl group. 2 Thus, the methyl-phenyl-modified silicone resin of the present invention can achieve both optimal hardness and heat resistance, and can be used as a high-temperature resistant anticorrosion coating.

[0059] Furthermore, the filler in the high-temperature corrosion-resistant coating material of the present invention is a mixture of metal filler and flake filler in a specific ratio, thereby achieving excellent adhesive strength and tensile strength. Specifically, when the ratio of metal filler to flake filler is 1:2 or 1:3, the pencil hardness of the surface layer is optimal (4H), and sufficient adhesive strength and tensile strength are both achieved.

[0060] Furthermore, compared with using only one type of flake filler, by using a mixture of magnesium talc and glass flakes, flake fillers with different flake diameters can be uniformly and densely adhered to the coating surface. Specifically, when the weight ratio of magnesium talc to glass flakes is 2:1 to 1:2, the corrosion resistance of the high-temperature corrosion-resistant coating material can be further improved. Therefore, the high-temperature corrosion-resistant coating material of the present invention can be applied to the outer surfaces of high-temperature tanks, pipelines, and equipment to effectively improve the weather resistance of the high-temperature tanks, pipelines, and equipment.

[0061] The above disclosure is merely a preferred embodiment of the present invention, and the scope of the claims of the present invention is not limited thereto. Therefore, all equivalent technical modifications made using the specification and drawings of the present invention are included in the scope of the claims of the present invention.

Claims

1. 20 wt% to 40 wt% heat-resistant silicone resin; 30 wt% to 45 wt% of filler; 0.5 wt to 5 wt % of a film-forming aid; 15 wt % to 30 wt % of a solvent; The filler includes a metal filler and a flake filler, and the weight ratio of the metal filler to the flake filler is 1:2 to 1:3; the heat-resistant silicone resin is at least one selected from the group consisting of a methyl-phenyl-modified silicone resin, an epoxy resin-modified silicone resin, and a polyester-modified silicone resin; The flake filler comprises magnesium talc and glass flakes, and the weight ratio of the magnesium talc to the glass flakes is 2:1 to 1:

2.

2. 2. The high-temperature, corrosion-resistant coating material according to claim 1, wherein the methyl-phenyl-modified silicone resin has a methyl content of 20% to 35% and a phenyl content of 65% to 80%.

3. The viscosity of the methyl-phenyl-modified silicone resin is 20 to 100 mm 2 2. The high-temperature corrosion-resistant coating material according to claim 1, wherein the solubility is 1 / s.

4. 2. The high-temperature, corrosion-resistant coating according to claim 1, wherein the filler is at least one selected from the group consisting of aluminum powder, zinc powder, talc powder, aluminum magnesium talc, magnesium talc, glass flakes, silica talc, and combinations thereof.

5. 2. The high-temperature, corrosion-resistant coating material according to claim 1, wherein the glass flakes have a flake diameter larger than that of the magnesium talc.

6. 2. The high-temperature-resistant, corrosion-resistant coating material according to claim 1, wherein the magnesium talc has a flake diameter of 3 μm to 5 μm, and the glass flakes have a flake diameter of 10 μm to 20 μm.

7. 2. The high-temperature, corrosion-resistant coating material according to claim 1, wherein the film-forming aid is at least one selected from the group consisting of alcohol ethers, zirconium alcohols, mixtures of ethylene glycol monobutyl ether and dipropylene glycol butyl ether, plasticizers, and combinations thereof.

8. 2. The high-temperature, corrosion-resistant coating material according to claim 1, wherein the solvent is at least one selected from the group consisting of toluene, xylene, aromatic hydrocarbon solvents, and combinations thereof.

9. 2. The high-temperature resistant, corrosion-resistant coating material according to claim 1, further comprising a curing catalyst, the content of which is 0.5 wt % to 2 wt % of the heat-resistant silicone resin.

10. providing 30 wt% to 45 wt% of filler so that the weight ratio of metal filler to flake filler is 1:2 to 1:3, the flake filler including magnesium talc and glass flake, the weight ratio of magnesium talc to glass flake is 2:1 to 1:2; A pre-dispersion liquid is prepared by pre-dispersing 20 wt % to 40 wt % of a heat-resistant silicone resin, the flake filler, and 0.5 wt % to 5 wt % of a film-forming aid, wherein the heat-resistant silicone resin is at least one selected from the group consisting of a methyl-phenyl-modified silicone resin, an epoxy resin-modified silicone resin, and a polyester-modified silicone resin; and adding the metal filler and 15 wt % to 30 wt % of a solvent to the pre-dispersion liquid and stirring to make the mixture uniform, thereby obtaining a high-temperature corrosion-resistant paint.

11. The heat-resistant silicone resin has a refractive index of 1.40 to 1.53 and a thickness of 20 to 100 mm. 2 11. The method for producing a high-temperature corrosion-resistant coating material according to claim 10, wherein the coating material has a viscosity of 1000 ppm or more.

12. The method for producing a high-temperature-resistant corrosion-resistant coating according to claim 10, wherein the heat-resistant silicone resin is a methyl-phenyl-modified silicone resin, and in the methyl-phenyl-modified silicone resin, a methyl content is 20% to 35% and a phenyl content is 65% to 80%.

13. 11. The method for producing a high-temperature corrosion-resistant coating according to claim 10, wherein the film-forming aid is at least one selected from the group consisting of alcohol ether, zirconium alcohol, a mixture of ethylene glycol monobutyl ether and dipropylene glycol butyl ether, a plasticizer, and a combination thereof.

14. The method for producing a high-temperature, corrosion-resistant coating material according to claim 10, wherein the solvent is at least one selected from the group consisting of toluene, xylene, aromatic hydrocarbon solvents, and combinations thereof.

15. 11. The method for producing a high-temperature-resistant, corrosion-resistant coating according to claim 10, further comprising adding a curing catalyst to the high-temperature-resistant, corrosion-resistant coating immediately before use, wherein the content of the curing catalyst is 0.5 wt % to 2 wt % of the heat-resistant silicone resin.

16. The method for producing a high-temperature, corrosion-resistant coating material according to claim 15, wherein the curing catalyst is an alkoxysilane.

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