High-temperature resistant anticorrosive coating material and method for producing the same

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 resistant anticorrosive paint and a method for manufacturing the same, and particularly to an organic high-temperature resistant anticorrosive paint and a method for manufacturing the same.

Background Art

[0002] In chemical factories and chemical plants, metal tanks are often used for storing chemical substances, and pipelines are used for connecting various devices in chemical-related processes. In order to enhance the durability of metal tanks, pipelines, and equipment, in the prior art, inorganic ceramic-based anticorrosive paints may be used to coat the surfaces of metal tanks, pipelines, and equipment.

[0003] However, the adhesion between the inorganic ceramic-based anticorrosive paint and the organic surface layer paint is poor. In short-term use, problems such as surface pinholes, blistering, cracking, and poor adhesion may occur, and in long-term use, there may be problems such as paint peeling and damage. Furthermore, high temperatures are often used in the production lines of chemical factories and chemical plants, and the anticorrosive paint still requires high-temperature resistance.

[0004] Therefore, by improving the components, improving the adhesion of the paint, and achieving effects such as high-temperature resistance, anticorrosion, energy saving, and carbon reduction, overcoming the above-mentioned drawbacks has become an important issue for this business.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The technical problem to be solved by the present invention is to provide a high-temperature resistant anticorrosive paint in view of the deficiencies of the prior art.

Means for Solving the Problems

[0006] The high-temperature resistant anticorrosive coating 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 agent, and 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.

[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, in the methyl-phenyl modified silicone resin, the methyl content is 20% to 35%, and the phenyl content is 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 flake, silica talc, and combinations thereof.

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

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

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

[0014] In one embodiment of the present invention, the flake diameter of the magnesium talc is 3 μm to 5 μm, and the flake diameter of the glass flake is 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 alcohol, a mixture 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 anticorrosive paint 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] In order to solve the above technical problems, one technical means adopted by the present invention is to provide a method for manufacturing a high-temperature resistant anticorrosive paint. The method for manufacturing a high-temperature resistant anticorrosive paint includes preparing 30 wt% to 45 wt% of a filler such that the metal filler:flake filler (weight ratio) is 1:2 to 1:3, 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, and pre-dispersing them to prepare a pre-dispersion liquid, and adding the metal filler and 15 wt% to 30 wt% of a solvent to the pre-dispersion liquid and stirring to make it uniform, thereby obtaining a high-temperature resistant anticorrosive 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.

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

[0021] In one embodiment of the present invention, the flake filler includes magnesium talc and glass flakes, and the magnesium talc: glass flakes (weight ratio) is 2:1 - 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 alcohol, a mixture 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, it further includes adding a curing catalyst to the high-temperature resistant anticorrosive paint immediately before use, and the content of the curing catalyst is 0.5wt% - 2wt% of the heat-resistant silicone resin.

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

Advantages of the Invention

[0026] As an advantageous effect of the present invention, the high-temperature resistant anticorrosive paint and its manufacturing method according to the present invention can improve the adhesion and anticorrosive properties of the high-temperature resistant anticorrosive paint by technical features such as "the filler includes a metal filler and a flake filler" and "the metal filler: flake filler (weight ratio) is 1:2 - 1:3".

Embodiments for Carrying out the Invention

[0027] For a better understanding of the features and technical content of the present invention, please refer to the following detailed description of the present invention. However, the provided detailed description is only for reference and explanation, and is not for limiting the scope of the claims of the present invention.

[0028] Hereinafter, the "high-temperature resistant anticorrosive paint and its manufacturing method" according to the embodiments of the present invention will be described according to a specific embodiment. Those skilled in the art can understand the advantages and effects of the present invention based on the content disclosed in this specification. The present invention can be implemented or applied according to other different specific embodiments, and for each detail in this specification, various modifications and changes can be made based on different viewpoints 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 protection scope of the present invention.

[0029] [First Embodiment] In the first embodiment of the present invention, a high-temperature resistant anticorrosive paint containing a heat-resistant silicone resin, a filler, and a film-forming auxiliary is provided. In order to correspond to the use temperature of 200°C to 300°C often used in chemical factories and chemical plants, the high-temperature resistance (property) or heat resistance (property) in this specification refers to the performance of being able to withstand a temperature of about 450°C. The heat-resistant silicone resin may be at least one selected from the group consisting of methyl-phenyl modified silicone resin, epoxy resin modified silicone resin, and polyester modified silicone resin.

[0030] More specifically, based on the total weight of the high-temperature resistant anticorrosive paint, the content of the heat-resistant silicone resin may be 20wt% to 40wt%, that is, any positive number between 20wt% and 40wt% is also acceptable. For example, it may be 20, 25, 30, 35 or 40wt%. If the content of the heat-resistant silicone resin is less than 20wt%, the fluidity of the high-temperature resistant anticorrosive paint will deteriorate, which is disadvantageous for coating. If the content of the heat-resistant silicone resin exceeds 40wt%, the high-temperature resistance of the high-temperature resistant anticorrosive paint will be insufficient. In one preferred embodiment, the content of the heat-resistant silicone resin may be 25wt% to 35wt%.

[0031] It should be noted that when the heat-resistant silicone resin is a methyl-phenyl modified silicone resin, based on the total weight of the methyl group and the phenyl group in the heat-resistant silicone resin, the content of methyl is 20% to 35%, and the content of phenyl is 65% to 85%, so that a methyl-phenyl modified silicone resin with a viscosity of 20 to 100 mm 2 / s can be obtained. If the content of methyl is less than 20% or the content of phenyl exceeds 80%, the texture of the methyl-phenyl modified silicone resin will become hard. If the content of methyl exceeds 35% or the content of phenyl is less than 65%, the viscosity of the methyl-phenyl modified silicone resin will be low, making it difficult to apply and resulting in insufficient heat resistance. In one preferred embodiment, in order for the methyl-phenyl modified silicone resin of the present application to achieve both optimal hardness and heat resistance, the content of methyl may be 25% to 30%, and the content of phenyl may be 70% to 75%.

[0032] In other words, the content of methyl affects the softness (height) of the resin, and the content of phenyl affects the heat resistance of the resin. The present invention examined the ratio of methyl to phenyl in the high-temperature resistant anticorrosive paint and its influence on the high-temperature resistant anticorrosive paint. The ratio of methyl to phenyl and the experimental results are as shown in Table 1 below.

[0033] In Table 1, the high-temperature corrosion-resistant paint contained 27 wt% of heat-resistant silicone resin, 40 wt% of filler, 3 wt% of film-forming aid, and 30 wt% of solvent. Here, the heat-resistant silicone resin with a methyl / phenyl ratio of 28 / 72 was KR500 manufactured by Shin-Etsu Chemical Co., Ltd., the heat-resistant silicone resin with a methyl / phenyl ratio of 15 / 85 was X-40-9227 manufactured by Shin-Etsu Chemical Co., Ltd., and the heat-resistant silicone resin with a methyl / phenyl ratio of 40 / 60 was KR-515 manufactured by Shin-Etsu Chemical Co., Ltd. The metal filler was aluminum powder, the flake filler was a mixture of magnesium talc and glass flakes, the metal filler:flake filler (weight ratio) was 1:2, and the magnesium talc:glass flake (weight ratio) was 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 the most appropriate (4H), and sufficient adhesion and tensile strength could be achieved simultaneously. That is, in one preferred embodiment of the present invention, methyl:phenyl may be 7:18. In comparison, when the methyl content was 15% and the phenyl content was 85%, the texture of the resin 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 adhesion. 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 resistant anticorrosive coating, the high-temperature resistant anticorrosive coating of the present invention may contain a filler. Based on the total weight of the high-temperature resistant anticorrosive coating, the content of the filler may be 30wt% - 45wt%, that is, any positive number between 30wt% and 45wt%. For example, it may be 30, 32, 34, 36, 38, 40, 42, 44 or 45wt%. If the content of the filler is less than 30wt%, the desired corrosion resistance cannot be obtained. If the content of the filler exceeds 45wt%, it may affect the film-forming property of the high-temperature resistant anticorrosive coating. In one preferred embodiment, the content of the filler may be 35wt% - 40wt%.

[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 should be noted that in the high-temperature resistant anticorrosive coating according to the present invention, a metal filler and a flake filler are combined and used to further improve the high-temperature resistance of the high-temperature resistant anticorrosive coating. In the present invention, when considering the ratio of the metal filler to the flake filler in the high-temperature resistant anticorrosive coating and its influence on the high-temperature resistant anticorrosive coating, the ratio of the metal filler to the flake filler and the experimental results are as shown in Table 2 below. The formulation of the high-temperature resistant anticorrosive coating in Table 2 is basically the same as that in Table 1, and the difference between the two is that in Table 2, the ratio of the metal filler to the flake filler is changed. That is, the total weight of the metal filler and the flake filler in the coating is still 40wt%, but the ratio of the metal filler to the flake filler in the filler is changed for evaluation.

[0038]

Table 2

[0039] As shown in Table 2, when the ratio of the metal filler to the flake filler was 1:1, the hardness was high, but the adhesive strength and tensile strength needed further improvement. When the ratio of the metal filler to the flake filler was 1:4, the hardness decreased. Compared with the case of 1:1, the adhesive strength improved slightly, but the tensile strength deteriorated further, making it easier to sag during the coating process. On the other hand, when the ratio of the metal filler to the flake filler was 1:2 and 1:3, the pencil hardness of the surface layer was most appropriate (4H), and sufficient adhesive strength and tensile strength could be achieved simultaneously. Thus, the ratio of the metal filler to the flake filler according to the present invention is preferably 1:2 to 1:3.

[0040] Furthermore, 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 small flake diameter fills the gaps of the magnesium talc with a large flake diameter, so that the entire filler adheres more closely to the coating surface, and the gas and water vapor permeation rates decrease. Specifically, the flake diameter of the magnesium talc is 3 μm to 5 μm, and the flake diameter of the glass flakes may be 10 μm to 20 μm. The flake diameter in this specification is the average flake diameter (D 50 ). In the present invention, when the ratio of magnesium talc to glass flakes in the high-temperature corrosion-resistant paint was examined for its influence on the high-temperature corrosion-resistant paint, the ratio of magnesium talc to glass flakes and the experimental results are as 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. Regarding the differences between the two, the evaluation was performed 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 are used, that is, the magnesium talc:glass flakes (weight ratio) is 1:0 or 0:1, both the gas permeability and the water vapor permeability are relatively high, indicating that the corrosion resistance of the high-temperature resistant anticorrosive paint is poor. On the other hand, when magnesium talc and glass flakes are mixed, both the gas permeability and the water vapor permeability are reduced to 7% or less. When the magnesium talc and glass flakes (weight ratio) is 2:1 to 1:2, the high-temperature resistant anticorrosive paint can be given low gas permeability and water vapor permeability. Thereby, excellent protection and corrosion resistance can be achieved.

[0043] In addition, in order to avoid sagging when applying the high-temperature resistant anticorrosive paint or cracks and breakage when drying the high-temperature resistant anticorrosive paint, the high-temperature resistant anticorrosive paint 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 ethers, zirconium alcohol, a mixture of ethylene glycol monobutyl ether and dipropylene glycol butyl ether, plasticizers, and combinations thereof. However, the above specific examples are merely examples that can be implemented, and the present invention is not limited thereto.

[0044] Specifically, based on the total weight of the high-temperature resistant anticorrosive paint, the content of the film-forming aid may be 0.5 wt% to 5 wt%, that is, 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 film-forming aid is less than 0.5 wt%, it does not help the film-forming property of the high-temperature resistant anticorrosive paint. If the content of the film-forming aid exceeds 5 wt%, the manufacturing cost of the high-temperature resistant anticorrosive paint is increased. In one preferred embodiment, the content of the film-forming aid may be 2 wt% to 3.5 wt%.

[0045] More specifically, in the high-temperature resistant anticorrosive paint, 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, that is, it may be 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 cannot assist the curing effect. If the content of the curing catalyst exceeds 2 wt%, the curing speed of the high-temperature resistant anticorrosive paint is too fast and it becomes 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 such as the heat-resistant silicone resin, filler, and film-forming aid contained in the high-temperature resistant anticorrosive paint of the present invention may be mixed with a solvent. In order to uniformly mix the components used in the high-temperature resistant anticorrosive paint according to 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, based on the total weight of the high-temperature resistant anticorrosive paint, the content of the solvent may be 15 wt% to 30 wt%, preferably 20 wt% to 28 wt%.

[0047] [Second Embodiment] In the second embodiment of the present invention, a method for manufacturing a high-temperature resistant anticorrosive paint is provided, which includes the steps of preparing a filler, a pre-dispersion step, and a mixing step. Since the filler of the present invention has 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] Also, when the metal filler and the flake filler are simultaneously mixed into the resin, it will lead to poor dispersibility. Therefore, when manufacturing the high-temperature corrosion-resistant paint according to the present invention, it is better to manufacture the predispersion liquid first. In other words, a predispersion liquid is obtained by pre-dispersing 20 wt% to 40 wt% of heat-resistant silicone resin, a flake filler, and 0.5 wt% to 5 wt% of a film-forming aid in a homogenizer. Then, a metal filler and 15 wt% to 30 wt% of a solvent are added to the predispersion liquid and stirred with a stirrer to be uniform, thereby obtaining the high-temperature corrosion-resistant paint according to the present invention.

[0049] Furthermore, in order to assist the curing of the coating layer, a curing catalyst can be added to the high-temperature corrosion-resistant paint before coating. 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 specific examples are merely examples that can be implemented, and the present invention is not limited thereto.

[0050] In order to show the property that the high-temperature corrosion-resistant paint according to the present invention does not crack at high temperatures, a comparison was made between the high-temperature corrosion-resistant paint according to the present invention and an existing inorganic metal paint. In this example, the high-temperature corrosion-resistant paint according to the present invention contained 27 wt% of heat-resistant silicone resin, 40 wt% of a filler, 3 wt% of a film-forming aid, and 30 wt% of a solvent. The detailed components were the same as those in Table 1. The inorganic metal paint was inorganic zinc powder. The comparison results are as shown in Table 4 below.

[0051]

Table 4

[0052] As shown in Table 4, the high-temperature resistant anticorrosive paint according to the present invention has higher adhesion and tensile strength compared with inorganic metal paints, and can improve the poor adhesion of existing inorganic metal paints. That is, in the present invention, by using an organic paint instead of the existing inorganic paint, excellent toughness and adhesiveness can be imparted to the high-temperature resistant anticorrosive paint. Specifically, the high-temperature resistant anticorrosive paint according to the present invention has a coefficient of thermal expansion of 25-50 μm / m°C, and can provide excellent toughness and adhesiveness.

[0053] In this specification, for the measurement of the pencil hardness of the surface layer, the anticorrosive paint was uniformly applied to a flat plate with a thickness of 100 μm. After curing and drying, the pencil hardness of the surface layer was obtained by rubbing with pencils of different hardnesses until plastic deformation (denting), cohesive damage (scratches or gouges), or a combination thereof appeared on the surface.

[0054] For the adhesion test of the coating, lines were drawn on the coating using a crosshatch cutter, the cut coating film was pasted with tape, and then the tape was peeled off. Taking the total area of the original coating film as 100%, the ratio of the area of the coating film peeled off when the tape was peeled off was calculated, and this percentage was used to represent the degree of peeling of the coating film, and the adhesion was evaluated. 5B means that the edges of the cuts were completely smooth and none of the squares of the lattice were separated. 4B indicates that the affected area (peeling area) is ≤5%. 3B indicates that the affected area (peeling area) is 5-15% of the lattice. 2B indicates that the affected area (peeling area) is 15-35% of the lattice. 1B indicates that the affected area (peeling area) is 35-65% of the lattice. 0B indicates that the affected area (peeling area) exceeds 65% of the lattice.

[0055] Regarding the tensile strength test, the anticorrosive paint was applied to the metal layer, cured and dried to form a coating. After performing a high-temperature treatment at 450°C for 24 hours, a tensile strength test was carried out. That is, when peeling the coating from the metal layer, the peeling force was measured using a pressure sensor, and the measured data was used as the tensile strength (MPa) of the anticorrosive paint after heating.

[0056] In the present invention, a coating with a thickness of 60 mm was used to conduct gas permeability and water vapor permeability tests. The gas permeability (OTR) was measured based on ISO 15105-1 (23°C; 100% O2; 0% RH). The water vapor permeability (WVTR) was measured based on ISO 15106-2 (38°C; 90% RH).

[0057] [Advantageous effects according to the embodiment] As an advantageous effect of the present invention, the high-temperature resistant anticorrosive paint and its manufacturing method according to the present invention can improve the adhesion and anticorrosive properties of the high-temperature resistant anticorrosive paint due to technical features such as "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] Furthermore, based on the total weight of the methyl group and the phenyl group in the present invention, by setting the methyl content to 20% to 35% and the phenyl content to 65% to 85%, a methyl-phenyl modified silicone resin with a viscosity of 20 to 100 mm 2 / s can be obtained. Thereby, the methyl-phenyl modified silicone resin of the present invention can achieve both optimal hardness and heat resistance and is used as the application of a high-temperature resistant anticorrosive coating.

[0059] Also, in the high-temperature resistant anticorrosive paint according to the present invention, by mixing the metal filler and the flake filler in a specific ratio, excellent adhesive force and tensile force can be obtained. Specifically, when the ratio of the metal filler to the flake filler is 1:2 and 1:3, the pencil hardness of the surface layer is the most appropriate (4H), and sufficient adhesive force and tensile force can be achieved simultaneously.

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

[0061] The content disclosed above is only a preferred feasible embodiment of the present invention, and the scope of the claims of the present invention is not limited thereto. Therefore, all equivalent technical changes made using the content of 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% of heat-resistant silicone resin, 30 wt% to 45 wt% of filler, 0.5 wt to 5 wt% of film-forming aid, 15 wt% to 30 wt% of solvent, and the filler includes a metal filler and a flake filler, and the metal filler:the flake filler (weight ratio) is 1:2 to 1:3, a high-temperature resistant anticorrosive paint.

2. The high-temperature resistant anticorrosive paint according to Claim 1, wherein the heat-resistant silicone resin is at least one selected from the group consisting of methyl-phenyl modified silicone resin, epoxy resin modified silicone resin, and polyester modified silicone resin.

3. In the methyl-phenyl modified silicone resin, the content of methyl is 20% to 35%, and the content of phenyl is 65% to 80%, the high-temperature resistant anticorrosive paint according to Claim 2.

4. The viscosity of the methyl phenyl modified silicone resin is 20 to 100 mm 2 / s, and the high temperature resistant anticorrosive paint according to claim 2.

5. The high-temperature resistant anticorrosive paint 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 flake, silica talc, and combinations thereof.

6. The high-temperature resistant anticorrosive paint according to Claim 1, wherein the flake filler includes magnesium talc and glass flake.

7. The high-temperature resistant anticorrosive paint according to Claim 6, wherein the magnesium talc:the glass flake (weight ratio) is 2:1 to 1:

2.

8. The high-temperature resistant anticorrosive paint according to Claim 6, wherein the flake diameter of the glass flake is larger than the flake diameter of the magnesium talc.

9. The high-temperature resistant anticorrosive paint according to Claim 6, wherein the flake diameter of the magnesium talc is 3 μm to 5 μm, and the flake diameter of the glass flake is 10 μm to 20 μm.

10. The high-temperature resistant anticorrosive paint according to Claim 1, 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, plasticizer, and combinations thereof.

11. The high-temperature resistant anticorrosive paint 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.

12. The high-temperature resistant anticorrosive 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. The high-temperature resistant anticorrosive coating according to claim 1.

13. Metal filler: Prepare 30 wt% to 45 wt% of filler such that the (weight ratio) of flake filler is 1:2 to 1:

3. Pre-disperse 20 wt% to 40 wt% of heat-resistant silicone resin, the flake filler, and 0.5 wt% to 5 wt% of film-forming aid to prepare a pre-dispersion liquid. Adding 15 wt% to 30 wt% of the metal filler and solvent to the pre-dispersion liquid and stirring to make it uniform to obtain a high-temperature resistant anticorrosive coating. The method for manufacturing a high-temperature resistant anticorrosive coating is characterized by including the above steps.

14. 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, and is a method for manufacturing a high-temperature resistant anticorrosive paint according to claim 13.

15. The heat-resistant silicone resin is a methyl-phenyl modified silicone resin. In the methyl-phenyl modified silicone resin, the methyl content is 20% to 35%, and the phenyl content is 65% to 80%. The method for manufacturing a high-temperature resistant anticorrosive coating according to claim 13.

16. The flake filler includes magnesium talc and glass flake, and the magnesium talc: glass flake (weight ratio) is 2:1 to 1:

2. The method for manufacturing a high-temperature resistant anticorrosive coating according to claim 13.

17. 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, plasticizer, and combinations thereof. The method for manufacturing a high-temperature resistant anticorrosive coating according to claim 13.

18. The solvent is at least one selected from the group consisting of toluene, xylene, aromatic hydrocarbon solvents, and combinations thereof. The method for manufacturing a high-temperature resistant anticorrosive coating according to claim 13.

19. The method for manufacturing a high-temperature resistant anticorrosive coating according to claim 13 further includes adding a curing catalyst to the high-temperature resistant anticorrosive coating immediately before use, and the content of the curing catalyst is 0.5 wt% to 2 wt% of the heat-resistant silicone resin.

20. The curing catalyst is alkoxysilane. The method for manufacturing a high-temperature resistant anticorrosive coating according to claim 19.

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