A quick-drying high-temperature oxidation-resistant coating and a preparation method and use method thereof

Abstract

This application discloses a quick-drying, high-temperature anti-oxidation coating and its preparation and application methods, belonging to the technical field of high-temperature protective coatings. The coating comprises the following components: methyl phenyl silicone resin, xylene, toluene, graphite powder, and methyl ethyl ketone, wherein the mass ratio of methyl ethyl ketone to methyl phenyl silicone resin is 1:0.2~0.5. This application utilizes the rapid evaporation of toluene to achieve initial surface shaping of the coating, while the slow evaporation of xylene provides sufficient leveling time, effectively preventing surface defects. Simultaneously, the specific proportion of methyl ethyl ketone penetrates and disperses the resin molecular chains, significantly reducing viscosity, thereby improving the uniformity of coating application and the release performance after heat treatment. The coating described in this application can achieve rapid drying within 30 minutes at room temperature, and does not crack or peel off at high temperatures of 550℃~750℃, exhibiting excellent anti-oxidation performance and ease of processing, significantly improving the manufacturing efficiency of titanium alloy components.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of high-temperature protective coating, and particularly relates to a quick-drying high-temperature anti-oxidation coating as well as a preparation method and a use method thereof. BACKGROUND

[0002] In the hot forming process of titanium alloy, in order to prevent high-temperature oxidation, the existing technology mainly adopts two schemes: one is to remove the surface oxidation layer after hot forming through pickling, polishing and other methods, but this method is complicated, high in cost and easy to cause material waste; the other is to coat a high-temperature anti-oxidation coating before hot forming to isolate air from the source.

[0003] However, the existing high-temperature anti-oxidation coating has the following defects: first, the curing rate is slow, resulting in a long production cycle; second, the wettability is poor, resulting in that the coating is difficult to be uniformly coated; third, the coating is easy to crack and fall off at high temperature, the protection effect is unstable, and it is easy to cause the part to be difficult to demold. These defects seriously restrict the manufacturing efficiency and quality of titanium alloy components. Therefore, it is urgent to develop a new high-temperature resistant coating with the characteristics of quick drying, good wettability, excellent high-temperature stability and easy demolding. SUMMARY

[0004] The application aims to provide a quick-drying high-temperature anti-oxidation coating as well as a preparation method and a use method thereof, which can solve the defects of the existing high-temperature coating, such as a long curing cycle, poor high-temperature protection stability, poor leveling property and easy sticking to the mold.

[0005] To achieve the above-mentioned purpose, the application provides a quick-drying high-temperature anti-oxidation coating, which comprises the following components by weight: methylphenyl silicone resin 15-25 parts, dimethylbenzene 40-50 parts, toluene 20-30 parts, graphite powder 15-25 parts and methyl ethyl ketone 3-12.5 parts, wherein the mass ratio of methyl ethyl ketone to methylphenyl silicone resin is 1:0.2-0.5.

[0006] Further, the following components by weight are included: methylphenyl silicone resin 20 parts, dimethylbenzene 45 parts, toluene 25 parts, graphite powder 20 parts and methyl ethyl ketone 7.5 parts.

[0007] Further, the mass ratio of the total mass of toluene and dimethylbenzene to the mass of methylphenyl silicone resin is 2.4-4.5:1.

[0008] Further, the particle size of the graphite powder is 1-1.5 microns.

[0009] Further, the methylphenyl silicone resin is MQ type methylphenyl silicone resin.

[0010] Further, the quick-drying high-temperature anti-oxidation coating is placed at 5-30℃ for 10-30 minutes after brushing to dry to form a high-temperature anti-oxidation coating.

[0011] Furthermore, the maximum operating temperature of the high-temperature anti-oxidation coating formed after the quick-drying high-temperature anti-oxidation coating is between 550℃ and 750℃.

[0012] This application also discloses a method for preparing a quick-drying, high-temperature anti-oxidation coating, comprising the following steps: Methyl ethyl ketone and xylene were mixed by stirring to obtain solution A; Toluene was added to solution A and the mixture was stirred to obtain solution B; Methylphenyl silicone resin was added to solution B and stirred to obtain solution C; Add graphite powder to solution C and stir to obtain a quick-drying, high-temperature anti-oxidation coating.

[0013] Furthermore, the stirring speed is 1000rpm~3000rpm, and the stirring time is 5min~10min.

[0014] This application also discloses a method for using a quick-drying high-temperature anti-oxidation coating, which includes the following steps: brushing the quick-drying high-temperature anti-oxidation coating onto the surface of the material to be coated, and letting it stand for 10 to 30 minutes in an atmospheric environment at 5°C to 30°C.

[0015] In summary, this application has the following advantages: 1. This application achieves ultra-fast drying of the coating at room temperature by optimizing the solvent system and formulation. After brushing, the surface drying and complete drying times of the coating are both controlled within 30 minutes, allowing it to proceed to the next process without prolonged standing or high-temperature baking. This feature effectively solves the problem that the slow curing speed of traditional high-temperature protective coatings severely restricts the production cycle of titanium alloy components, significantly improving batch processing efficiency and manufacturing capacity.

[0016] 2. This application utilizes the difference in evaporation rates between toluene and xylene to construct a synergistic mechanism for rapid setting and sufficient leveling. Specifically, the rapid evaporation of toluene promotes initial surface setting of the coating, preventing sagging; subsequently, the slow evaporation of xylene provides sufficient leveling time for the coating. This staged film-forming process effectively eliminates surface defects such as orange peel, bubbles, and voids, resulting in excellent wettability of the coating on titanium surfaces, more uniform coating, significantly reduced reliance on operator coating skills, and simplified construction techniques.

[0017] 3. This application specifies that the mass ratio of methyl ethyl ketone to methyl phenyl silicone resin is between 0.2 and 0.5. Utilizing the strong solubility of methyl ethyl ketone, it effectively penetrates and disperses the resin molecular chains, significantly reducing the system viscosity. This low viscosity characteristic not only makes the coating easy to apply quickly and evenly at room temperature, but also improves the bonding state between the coating and the mold interface at the microscopic level, effectively solving the problem of traditional coatings easily sticking to the mold at high temperatures, and significantly improving the smoothness of demolding after titanium alloy hot working.

[0018] 4. The coating prepared in this application exhibits excellent heat resistance in high-temperature environments ranging from 550℃ to 750℃. Within this temperature range, the coating is not prone to cracking or peeling, and can continuously provide stable and dense anti-oxidation protection to the titanium substrate. This allows the present invention to maintain excellent high-temperature resistance and anti-oxidation properties while also possessing room-temperature quick-drying properties and ease of processing. Its overall performance is significantly superior to traditional high-temperature coatings, making it suitable for high-temperature hot-forming protection of various titanium alloy components. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a photograph of the coating of Example 1 of this application after heat treatment at 700°C.

[0021] Figure 2 This is a photograph of the coating of Comparative Example 2 of this application after heat treatment at 700°C.

[0022] Figure 3 This is a photograph of the coating of Comparative Example 3 of this application after heat treatment at 700°C. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the manufacturing process of titanium alloy components, hot forming processes (such as hot stamping and superplastic forming) are key technologies for achieving complex geometries and obtaining excellent comprehensive performance. However, titanium alloys are chemically extremely reactive, especially at high temperatures. When titanium alloys are hot-worked at temperatures above 550°C, their surfaces undergo a violent oxidation reaction with oxygen in the air, rapidly forming an oxygen-rich layer mainly composed of rutile titanium dioxide (TiO2). This oxide layer is porous, brittle, and hard, which not only significantly reduces the surface quality of the parts but also severely impairs their key mechanical properties such as fatigue strength, fracture toughness, and service life.

[0025] To solve the above problems, existing technologies usually remove the harmful oxide layer by means of pickling and mechanical grinding after hot forming. However, these post-processing steps not only increase manufacturing costs and material waste, but may also introduce new processing defects, resulting in low production efficiency and difficulty in meeting the urgent needs of the aerospace field for high-quality, high-efficiency, and low-cost manufacturing. Therefore, coating a temporary high-temperature anti-oxidation coating on the surface of titanium alloy to isolate the substrate from direct contact with air and inhibit the oxidation reaction from the source is considered a more effective technical approach. Theoretically, this type of high-temperature anti-oxidation coating can play a role in preventing oxidation and corrosion, and is easy to apply. However, the anti-oxidation coatings applied to the hot forming of titanium alloys in the existing technology still have the following technical defects: (1) Slow curing rate and long production cycle. Existing coatings generally have the problem of excessively long surface drying and actual drying time. After coating, it is necessary to wait for the coating to cure for a long time before entering the next process, which seriously restricts the production cycle and overall efficiency of titanium alloy components. (2) Poor wettability and uneven coating. The coating has insufficient wettability and adhesion to the titanium alloy substrate, which leads to phenomena such as sagging, orange peel, and uneven thickness during the brushing or spraying process, affecting the uniformity and reliability of the protective effect. (3) Difficult demolding, affecting the forming. The coating may stick to the mold at high temperature, or the interface state formed by itself may be poor, which makes it difficult to demold the parts after hot forming, and easily causes damage to the surface of the parts or the mold. (4) Insufficient temperature resistance, resulting in protection failure. The existing coating has limited high temperature resistance. At the high temperature required for titanium alloy hot forming (usually far exceeding 550℃), the coating is prone to cracking, powdering or even peeling, and cannot form a continuous and dense protective layer, resulting in the failure of its anti-oxidation function and failing to meet the special protection requirements under harsh working conditions.

[0026] In summary, existing high-temperature antioxidant coatings have significant shortcomings in terms of curing speed, workability, demolding performance, and high-temperature resistance, which have become a technical bottleneck restricting the development of efficient and high-quality hot forming technology for titanium alloys. Based on this, this application develops a high-temperature resistant, quick-drying coating suitable for titanium alloy hot forming processes, featuring rapid drying, excellent wettability, good demolding effect, and outstanding high-temperature stability.

[0027] Specifically, in the first aspect, this application provides a quick-drying, high-temperature anti-oxidation coating, comprising the following components by weight: 15-25 parts methyl phenyl silicone resin, 40-50 parts xylene, 20-30 parts toluene, 15-25 parts graphite powder, and 3-12.5 parts methyl ethyl ketone, wherein the mass ratio of methyl ethyl ketone to methyl phenyl silicone resin is 1:0.2-0.5. The coating system of this application utilizes the rapid volatility of toluene combined with an optimized solvent system to achieve rapid surface drying and complete drying within 30 minutes at room temperature; the leveling effect of xylene and the viscosity-reducing effect of methyl ethyl ketone ensure smooth and silky application of the coating, without stringing or streaking, and a smooth and dense coating after curing, free from defects such as pinholes and orange peel; the viscosity optimization of methyl ethyl ketone and the introduction of graphite powder prevent the coating from easily sticking to the mold during high-temperature thermoforming, ensuring smooth demolding of the parts after forming, protecting the surface of the parts and extending the mold life.

[0028] In the above scheme, (1) the synergy of toluene and xylene can achieve a balance between quick drying and leveling effects. Specifically: toluene has a lower boiling point and a faster evaporation rate. After application, toluene quickly escapes from the coating, causing the coating surface to dry quickly and be initially set. This effectively prevents the coating from flowing or sagging on vertical surfaces and ensures the uniform thickness of the coating. Xylene, on the other hand, has a higher boiling point and a relatively slower evaporation rate. After the toluene evaporates and sets the coating, xylene remains in the coating, providing a time window (i.e., leveling time) for the movement and rearrangement of resin molecular chains, allowing the coating to spread automatically, eliminating brush marks, orange peel, and bubbles, thereby forming a smooth and even surface. The evaporation mechanism of setting before leveling, produced by both, solves the problem of severe sagging or rough surface caused by excessively fast drying in traditional coatings. (2) Methyl ethyl ketone and methyl phenyl silicone resin can achieve solubilization and viscosity reduction. Specifically, methyl ethyl ketone, as a strong polar solvent, has excellent solubility and penetration ability for methyl phenyl silicone resin. At a specific ratio of 0.2 to 0.5, methyl ethyl ketone can fully penetrate into the interior of the resin molecular chain, effectively shielding the interaction forces between molecular chains, thereby significantly reducing the viscosity of the resin system. This low viscosity state not only makes the coating easy to brush at room temperature and has good wettability, but also helps to form a dense paint film with moderate physical properties in the early stage of high-temperature curing, avoiding the sticking phenomenon caused by excessively fast initial crosslinking or excessively viscous surface. (3) Methyl phenyl silicone resin provides basic film-forming ability and adhesion ability in coatings, and its Si-O bond energy is high, naturally possessing excellent heat oxidation resistance; graphite powder, as a high-temperature resistant filler, has good lubricity (aiding demolding) and high-temperature chemical stability. At high temperatures, graphite powder dispersed in the ceramicized framework formed by silicone resin not only fills the pores and blocks oxygen penetration, but also improves the thermal shock resistance of the coating, thereby preventing the coating from cracking under severe thermal expansion and contraction.

[0029] As a preferred embodiment of this application, the quick-drying high-temperature anti-oxidation coating comprises the following components in parts by weight: 20 parts of methylphenyl silicone resin, 45 parts of xylene, 25 parts of toluene, 20 parts of graphite powder, and 7.5 parts of methyl ethyl ketone.

[0030] As some optional embodiments of this application, the total mass ratio of toluene and xylene to methylphenyl silicone resin is 2.4~4.5:1.

[0031] As some optional embodiments of this application, the particle size of the graphite powder is 1μm to 1.5μm.

[0032] As some optional embodiments of this application, the methylphenyl silicone resin is an MQ-type methylphenyl silicone resin. MQ-type methylphenyl silicone resin is a variant of MQ silicone resin, in which the methyl / phenyl molar ratio of the R part of the organic group is 0.7:1 to 0.9:1. By adjusting the M / Q unit ratio, a three-dimensional network structure is formed, exhibiting high temperature resistance (-60℃ to 300℃), high light transmittance (>98%), and excellent electrical insulation.

[0033] As some optional embodiments of this application, the quick-drying high-temperature anti-oxidation coating is left to stand at 5°C to 30°C for 10 to 30 minutes after brushing to dry and form a high-temperature anti-oxidation coating. This application does not require complex heating and curing equipment; natural drying at room temperature is sufficient. The raw materials are all common industrial chemicals, which are easy to obtain and have controllable costs.

[0034] As some optional embodiments of this application, the maximum operating temperature of the high-temperature anti-oxidation coating formed after the quick-drying high-temperature anti-oxidation coating is between 550°C and 750°C. The formulation design of this application covers a temperature range of 550°C to 750°C. At this temperature, the coating does not crack or peel off, and can effectively block oxygen from contacting the titanium alloy substrate, preventing the formation of a brittle oxygen-rich layer.

[0035] Secondly, based on a general inventive concept, this application also provides a method for preparing a quick-drying, high-temperature anti-oxidation coating. This includes the following steps: S1. Mix methyl ethyl ketone with xylene to obtain solution A.

[0036] Methyl ethyl ketone is a highly polar solvent with a strong dissolving ability for methylphenyl silicone resin, but it evaporates relatively quickly. Xylene has moderate dissolving power and a high boiling point (slow evaporation). Mixing the two first effectively premixes a mixed solvent system with strong dissolving power and a high-boiling-point component, creating an optimal solvent environment for the subsequent dissolution of the resin and preventing excessively high local viscosity.

[0037] S2. Add toluene to solution A and stir to mix to obtain solution B.

[0038] Toluene is a fast-evaporating solvent. If a large amount of toluene is added directly in step S1, the entire system may evaporate prematurely, which is detrimental to the stability of subsequent operations. However, if it is added last, it is difficult to mix it thoroughly with the resin. Therefore, this application adds toluene before the resin is added, so that the final solvent system (methyl ethyl ketone, xylene, and toluene) reaches an ideal fast / slow evaporation balance beforehand. This ensures that when the resin is added, it is immediately enveloped by the solvent with a specific evaporation gradient, which determines the final coating's characteristics of fast surface drying (toluene) and good leveling (xylene) at the molecular level.

[0039] S3. Add methylphenyl silicone resin to solution B and stir to obtain solution C.

[0040] When methylphenyl silicone resin is added to a low-viscosity mixed solvent, the strong penetrating power of methyl ethyl ketone allows the solvent molecules to quickly penetrate into the interior of the resin molecular chain, breaking the entanglement between the molecular chains, thereby allowing the resin to fully swell and dissolve.

[0041] S4. Add graphite powder to solution C and stir to obtain a quick-drying high-temperature anti-oxidation coating.

[0042] Graphite powder should only be added after the resin has completely dissolved in the solvent to form a solution C with a certain viscosity. The viscous resistance of the liquid will then hinder the sedimentation of the graphite particles. At this point, the resin solution can quickly wet the surface of the graphite powder, forming a coating layer and preventing graphite agglomeration. If graphite powder is added before the resin dissolves, the powder is prone to clumping or settling at the bottom of the container, making it extremely difficult to disperse evenly.

[0043] As some optional embodiments of this application, the stirring speed is 1000 rpm to 3000 rpm, and the stirring time is 5 min to 10 min. This application, with its high-speed stirring of 1000 rpm to 3000 rpm and time control of 5 min to 10 min, ensures that all components are thoroughly and uniformly mixed, while avoiding excessive stirring that introduces too many air bubbles or leads to excessive solvent loss, thus exhibiting good process reproducibility and stability.

[0044] Thirdly, based on a general inventive concept, this application also provides a method for using a quick-drying high-temperature anti-oxidation coating, comprising: brushing the quick-drying high-temperature anti-oxidation coating onto the surface of the material to be coated, and allowing it to stand in an atmospheric environment at 5℃~30℃ for 10min~30min.

[0045] In summary, this application solves the problems of low construction efficiency, long production cycle, and limited batch processing caused by the need for traditional coatings to stand at room temperature for a long time or bake at high temperature to form a film through innovative formula design. At the same time, it improves the wettability and leveling properties of the coating on the titanium alloy surface, which can ensure uniform coating and overcome the technical problems of easy cracking and peeling of the coating under high temperature environment and difficulty in demolding parts. Thus, it provides a protective coating for high temperature processing of titanium alloys that is simple to brush, dries quickly at room temperature, and has stable and reliable protective performance.

[0046] The technical solutions described above in this application will be explained in detail below with reference to specific embodiments.

[0047] Example 1 This embodiment provides a quick-drying, high-temperature anti-oxidation coating, which is prepared by the following method: (1) Remove contaminants adhering to the surface of the titanium plate to ensure its surface cleanliness.

[0048] (2) Weigh 20g of methylphenyl silicone resin (the molar ratio of methyl / phenyl in the R part of the organic group is 0.8:1, the same below), 45g of xylene, 25g of toluene, 20g of graphite powder and 7.5g of methyl ethyl ketone as raw materials.

[0049] (3) Place the weighed methyl ethyl ketone into a container, pour in xylene, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution A.

[0050] (4) Add toluene to solution A, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution B.

[0051] (5) Add methylphenyl silicone resin to solution B, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 min to obtain solution C.

[0052] (6) Add graphite powder to solution C, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 minutes to obtain a quick-drying high-temperature anti-oxidation coating (slurry).

[0053] The obtained quick-drying high-temperature anti-oxidation coating was evenly brushed onto the surface of the titanium plate, ensuring complete coverage of the titanium plate substrate. It was then placed in an atmospheric environment and allowed to stand at room temperature (25°C) for 10 minutes to allow the coating on the titanium plate surface to dry and form a stable coating. Testing showed that the coating formed by the quick-drying high-temperature anti-oxidation coating in Example 1 had an adhesion grade of 1 after drying, exhibiting excellent high-temperature bonding. After undergoing three cycles of burning at 700°C and cooling, the coating maintained its complete morphology and color without change (e.g., ...). Figure 1(As shown). Simultaneously, the hydrogen and oxygen content of the titanium plate substrate (uncoated substrate) and the titanium plate sample after coating and thermoforming at 700℃ were tested. The test results showed that the hydrogen content of the titanium plate substrate was 0.00659%, and the oxygen content was 0.12%. The hydrogen content of the coated titanium plate after thermoforming was 0.00754%, and the oxygen content was 0.14%, showing only a slight increase compared to the original plate. This indicates that the quick-drying high-temperature anti-oxidation coating of Example 1 effectively protected the surface of the titanium plate during the thermoforming process.

[0054] Example 2 This embodiment provides a quick-drying, high-temperature anti-oxidation coating, which is prepared by the following method: (1) Remove contaminants adhering to the surface of the titanium plate to ensure its surface cleanliness.

[0055] (2) Weigh 15g of methyl phenyl silicone resin, 40g of xylene, 20g of toluene, 15g of graphite powder and 3g of methyl ethyl ketone as raw materials.

[0056] (3) Place the weighed methyl ethyl ketone into a container, pour in xylene, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution A.

[0057] (4) Add toluene to solution A, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution B.

[0058] (5) Add methylphenyl silicone resin to solution B, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 min to obtain solution C.

[0059] (6) Add graphite powder to solution C, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 minutes to obtain a quick-drying high-temperature anti-oxidation coating (slurry).

[0060] The obtained quick-drying, high-temperature anti-oxidation coating was evenly brushed onto the surface of the titanium plate, ensuring complete coverage of the titanium plate substrate. It was then placed in an atmospheric environment and allowed to stand at room temperature (25°C) for 10 minutes to allow the coating on the titanium plate surface to dry and form a stable coating.

[0061] Example 3 This embodiment provides a quick-drying, high-temperature anti-oxidation coating, which is prepared by the following method: (1) Remove contaminants adhering to the surface of the titanium plate to ensure its surface cleanliness.

[0062] (2) Weigh 25g of methyl phenyl silicone resin, 50g of xylene, 30g of toluene, 25g of graphite powder and 12.5g of methyl ethyl ketone as raw materials.

[0063] (3) Place the weighed methyl ethyl ketone into a container, pour in xylene, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution A.

[0064] (4) Add toluene to solution A, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution B.

[0065] (5) Add methylphenyl silicone resin to solution B, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 min to obtain solution C.

[0066] (6) Add graphite powder to solution C, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 minutes to obtain a quick-drying high-temperature anti-oxidation coating (slurry).

[0067] The obtained quick-drying, high-temperature anti-oxidation coating was evenly brushed onto the surface of the titanium plate, ensuring complete coverage of the titanium plate substrate. It was then placed in an atmospheric environment and allowed to stand at room temperature (25°C) for 10 minutes to allow the coating on the titanium plate surface to dry and form a stable coating.

[0068] Comparative Example 1 This comparative example provides a quick-drying, high-temperature anti-oxidation coating, which is prepared by the following method: (1) Remove contaminants adhering to the surface of the titanium plate to ensure its surface cleanliness.

[0069] (2) Weigh 25g of methyl phenyl silicone resin, 50g of xylene, 15g of toluene, 25g of graphite powder and 7.5g of methyl ethyl ketone as raw materials.

[0070] (3) Place the weighed methyl ethyl ketone into a container, pour in xylene, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution A.

[0071] (4) Add toluene to solution A, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution B.

[0072] (5) Add methylphenyl silicone resin to solution B, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 min to obtain solution C.

[0073] (6) Add graphite powder to solution C, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 minutes to obtain a quick-drying high-temperature anti-oxidation coating (slurry).

[0074] The obtained quick-drying high-temperature anti-oxidation coating was evenly brushed onto the surface of the titanium plate, ensuring complete coverage of the titanium plate substrate. It was then placed in an atmospheric environment and allowed to stand at room temperature (25°C) for 40 minutes to allow the coating to dry and form a stable coating. Testing showed that the coating had an adhesion grade of 1, excellent high-temperature bonding, and maintained its complete morphology and color after three cycles of burning at 700°C and cooling. Due to the high volatility of toluene, the drying and curing process of the coating was accelerated. Compared to Example 1, the mass fraction of toluene in Comparative Example 1 was reduced, resulting in a slower drying rate.

[0075] Comparative Example 2 This comparative example provides a quick-drying, high-temperature anti-oxidation coating, which is prepared by the following method: (1) Remove contaminants adhering to the surface of the titanium plate to ensure its surface cleanliness.

[0076] (2) Weigh 25g of methyl phenyl silicone resin, 45g of xylene, 25g of toluene, 20g of graphite powder and 2g of methyl ethyl ketone as raw materials.

[0077] (3) Place the weighed methyl ethyl ketone into a container, pour in xylene, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution A.

[0078] (4) Add toluene to solution A, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution B.

[0079] (5) Add methylphenyl silicone resin to solution B, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 min to obtain solution C.

[0080] (6) Add graphite powder to solution C, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 minutes to obtain a quick-drying high-temperature anti-oxidation coating (slurry).

[0081] The obtained quick-drying high-temperature anti-oxidation coating was evenly brushed onto the surface of the titanium plate, ensuring complete coverage of the titanium plate substrate. It was then placed in an atmospheric environment and allowed to stand at room temperature (25°C) for 10 minutes to allow the coating to dry and form a stable coating. Testing showed that the coating had an adhesion grade of 1, excellent high-temperature bonding, and after three cycles of burning at 700°C, the coating color showed no significant change upon cooling. However, compared to Example 1, the mass ratio of methyl ethyl ketone to methyl phenyl silicone resin in Comparative Example 2 was significantly reduced. This low dilution ratio resulted in a higher viscosity of the prepared coating, leading to greater brushing resistance and poor film uniformity (e.g., ...). Figure 2 As shown in the image, materials in some areas were not effectively protected.

[0082] Comparative Example 3 This comparative example provides a quick-drying, high-temperature anti-oxidation coating, which is prepared by the following method: (1) Remove contaminants adhering to the surface of the titanium plate to ensure its surface cleanliness.

[0083] (2) Weigh 25g of methyl phenyl silicone resin, 45g of xylene, 25g of toluene, 20g of graphite powder and 25g of methyl ethyl ketone as raw materials.

[0084] (3) Place the weighed methyl ethyl ketone into a container, pour in xylene, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution A.

[0085] (4) Add toluene to solution A, set the speed of the disperser to 2000 rpm, and stir at high speed for 5 minutes to obtain solution B.

[0086] (5) Add methylphenyl silicone resin to solution B, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 min to obtain solution C.

[0087] (6) Add graphite powder to solution C, set the speed of the disperser to 2000 rpm, and stir at high speed for 10 minutes to obtain a quick-drying high-temperature anti-oxidation coating (slurry).

[0088] The obtained quick-drying, high-temperature anti-oxidation coating was evenly brushed onto the surface of the titanium plate, ensuring complete coverage of the substrate. It was then placed in an atmospheric environment and allowed to stand at 25°C for 10 minutes to allow the coating to dry and form a stable coating. Testing showed that the coating had an adhesion level of 3, but after hot pressing at 700°C, localized whitening and peeling failure occurred (e.g., ...). Figure 3 (As shown). Compared to Example 1, the mass fraction of methyl ethyl ketone in Comparative Example 3 was significantly higher than that of methyl phenyl silicone resin. The high mass fraction of methyl ethyl ketone resulted in excessive dilution of the methyl phenyl silicone resin, causing severe sagging during brushing and preventing the formation of a uniform coating with effective thickness. After curing, the coating exhibited insufficient adhesion, cracking, and warping defects. After hot pressing at 700°C, the coating surface showed whitening and loss of gloss, and some parts of the coating peeled off.

[0089] In summary, within the formulation scope of this application, only by strictly controlling the mass ratio of methyl ethyl ketone to methyl phenyl silicone resin between 0.2 and 0.5, and adding appropriate amounts of toluene and xylene, can a titanium alloy thermoforming coating be obtained that possesses both room temperature quick-drying properties and excellent leveling and reliable high-temperature protective performance. Deviations from this ratio range, whether too low or too high, will lead to serious defects in the coating's workability or protective function.

[0090] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of this application.

[0091] Finally, it should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0092] This application uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A quick-drying, high-temperature anti-oxidation coating, characterized in that, It comprises the following components in parts by weight: 15 to 25 parts of methylphenyl silicone resin, 40 to 50 parts of xylene, 20 to 30 parts of toluene, 15 to 25 parts of graphite powder, and 3 to 12.5 parts of methyl ethyl ketone, wherein the mass ratio of methyl ethyl ketone to methylphenyl silicone resin is 1:0.2 to 0.

5.

2. The quick-drying high-temperature anti-oxidation coating according to claim 1, characterized in that, It includes the following components by weight: 20 parts methylphenyl silicone resin, 45 parts xylene, 25 parts toluene, 20 parts graphite powder, and 7.5 parts methyl ethyl ketone.

3. The quick-drying, high-temperature anti-oxidation coating according to claim 1, characterized in that, The total mass ratio of toluene and xylene to the mass ratio of methylphenyl silicone resin is 2.4~4.5:

1.

4. The quick-drying high-temperature anti-oxidation coating according to claim 1, characterized in that, The graphite powder has a particle size of 1μm to 1.5μm.

5. The quick-drying high-temperature anti-oxidation coating according to claim 1, characterized in that, The methylphenyl silicone resin is an MQ type methylphenyl silicone resin.

6. The quick-drying high-temperature anti-oxidation coating according to claim 1, characterized in that, The quick-drying high-temperature anti-oxidation coating is dried by standing at 5℃~30℃ for 10min~30min after brushing to form a high-temperature anti-oxidation coating.

7. The quick-drying high-temperature anti-oxidation coating according to claim 6, characterized in that, The maximum operating temperature of the high-temperature anti-oxidation coating formed after the quick-drying high-temperature anti-oxidation coating is between 550℃ and 750℃.

8. A method for preparing a quick-drying, high-temperature anti-oxidation coating according to any one of claims 1-7, characterized in that, Includes the following steps: Methyl ethyl ketone and xylene were mixed by stirring to obtain solution A; Toluene was added to solution A and the mixture was stirred to obtain solution B; Methylphenyl silicone resin was added to solution B and stirred to obtain solution C; Graphite powder is added to solution C and stirred to obtain a quick-drying, high-temperature anti-oxidation coating.

9. The preparation method according to claim 1, characterized in that, The stirring speed is 1000 rpm to 3000 rpm, and the stirring time is 5 min to 10 min.

10. A method of using the quick-drying high-temperature anti-oxidation coating according to any one of claims 1-7, characterized in that, The process includes the following steps: applying the quick-drying high-temperature anti-oxidation coating to the surface of the material to be coated and allowing it to stand in an atmospheric environment at 5℃~30℃ for 10min~30min.

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