High-temperature-resistant metal paint, preparation method thereof and application thereof in brake disc

Abstract

The present application belongs to the technical field of metal paint, and provides a high-temperature-resistant metal paint, a preparation method thereof and application in brake discs. The high-temperature-resistant metal paint comprises component one and component two in a mass ratio of 8-12:1; component one comprises silicone resin liquid, silicone-modified phenolic epoxy resin, rheological additive, cellulose acetate butyrate, aluminum powder, antirust pigment, defoaming agent, dispersant and organic solvent; and component two comprises polyamide resin, silicon carbide fiber, curing accelerator, adhesion promoter and organic solvent. The metal paint has excellent high-temperature resistance and salt spray resistance, good adhesion, and no pressure marks after packaging under low-temperature baking; meets the high-temperature 350 DEG C use requirement of brake discs and the low-temperature 80 DEG C baking production line requirement, and meets the salt spray resistance requirement of 240 h after normal-temperature curing and 168 h after high-temperature baking.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal paint, in particular to a high-temperature-resistant metal paint, a preparation method thereof and application of the high-temperature-resistant metal paint in brake discs. BACKGROUND

[0002] The brake disc bears the axial clamping force of the friction lining and the friction force of the two, and the greater the weight and load of the automobile and the faster the speed, the greater the force on the brake disc during deceleration and braking. During each braking of the automobile, the kinetic energy of the automobile is converted into heat energy, and 90% of the heat is absorbed by the brake disc body. The temperature at the friction surface of the brake disc, which is in frequent friction with the brake lining, continues to rise. Excessive temperature will cause the brake pad and the brake disc to produce thermal recession and deformation, and may also cause the brake oil to vaporize, thereby affecting the braking effect and even causing the brake to fail.

[0003] At present, some disc surface paints require a temperature resistance of 350 DEG C or higher, and also require certain corrosion resistance before and after high temperature. The existing metal paint for spraying has the problems of poor high-temperature resistance, poor corrosion resistance, high-temperature drying, and high cost. The film of the commonly used high-temperature-resistant aluminum powder coating needs to be cured at high temperature to have good corrosion resistance, and has the problems of poor corrosion resistance, low hardness, and poor adhesion when low-temperature baking.

[0004] Therefore, it is necessary to research a metal paint for brake disc with excellent high-temperature resistance, corrosion resistance, and adhesion to improve the performance of the brake disc. SUMMARY

[0005] The present application aims at the deficiencies of the prior art to provide a high-temperature-resistant metal paint, a preparation method thereof and application of the high-temperature-resistant metal paint in brake discs.

[0006] In order to achieve the above-mentioned application purposes, the present application provides the following technical solutions:

[0007] The present application provides a high-temperature-resistant metal paint, which comprises component one and component two; the mass ratio of component one to component two is 8-12:1.

[0008] Component one comprises the following raw materials in mass fraction: 50-60 parts of silicone resin liquid, 2-4 parts of silicone-modified phenolic epoxy resin, 1.5-8 parts of rheological aid, 2-4 parts of cellulose acetate butyrate, 7-12 parts of aluminum powder, 0.5-2 parts of anti-rust pigment, 0.1-0.5 parts of defoaming agent, 0.5-1.5 parts of dispersing agent, and 18-25 parts of organic solvent.

[0009] Component two comprises the following raw materials in mass fraction: 15-19 parts of polyamide resin, 1-3 parts of silicon carbide fiber, 0.4-1.0 parts of curing accelerator, 0.2-0.5 parts of adhesion promoter, and 62-76 parts of organic solvent.

[0010] Preferably, the silicone resin liquid comprises phenyl trimethicone and tetra-epoxy cyclosiloxane, and the mass ratio of the phenyl trimethicone and tetra-epoxy cyclosiloxane is 4-7:1; the silicone modified phenolic epoxy resin comprises silicone resin and phenolic epoxy resin, and the mass ratio of the silicone resin and phenolic epoxy resin is 1:3-5.

[0011] Preferably, the rheological aid comprises polyethylene wax, polyamide wax and polytetrafluoroethylene wax, and the mass ratio of the polyethylene wax, polyamide wax and polytetrafluoroethylene wax is 1-5:0.2-1.0:0.5-2.0.

[0012] Preferably, the particle size of the aluminum powder is 300-900 nm, and the mass ratio of aluminum powder with a particle size of 300-400 nm, aluminum powder with a particle size of 400-600 nm and aluminum powder with a particle size of 600-900 nm is 2-4:1-3:1.

[0013] Preferably, the anti-rust pigment comprises zinc phosphomolybdate and / or aluminum tripolyphosphate, and the defoaming agent is a silicone defoaming agent.

[0014] Preferably, the curing accelerator is a modified aliphatic polyamine, and the adhesion promoter is a silane adhesion promoter.

[0015] Preferably, the organic solvent in component one is an aromatic solvent and an alcohol solvent, and the volume ratio of the aromatic solvent and the alcohol solvent is 7-15:3-6; the organic solvent in component two is an aromatic solvent.

[0016] The application also provides a preparation method of the high-temperature-resistant metal paint.

[0017] 1) Preparation of component one: first mix silicone resin liquid, silicone modified phenolic epoxy resin, cellulose acetate butyrate, aluminum powder and organic solvent to obtain mixed slurry; second mix the mixed slurry, rheological aid, anti-rust pigment, defoaming agent and dispersant to obtain component one.

[0018] Preparation of component two: mix polyamide resin, silicon carbide fiber, curing accelerator, adhesion promoter and organic solvent to obtain component two.

[0019] 2) Mix component one and component two to obtain high-temperature-resistant metal paint.

[0020] The application also provides application of the high-temperature-resistant metal paint in brake discs.

[0021] The application has the following advantages:

[0022] The present application takes organic silicon resin liquid as main raw material, selects aluminum powder with various particle sizes, combines various components such as organic silicon resin liquid, cellulose acetate butyrate, rheological additive, aluminum powder, polyamide resin, organic silicon modified phenolic aldehyde epoxy resin, curing accelerator, adhesion accelerator and the like, so that the obtained metal paint has excellent high temperature resistance, salt spray resistance, good adhesion, no pressure mark under low temperature baking, meets the use requirement of brake disc at high temperature 350 DEG C and the production requirement of low temperature 80 DEG C baking line, simultaneously meets the salt spray resistance requirement of 240h after normal temperature curing and 168h after high temperature baking, and reduces the production cost (raw material cost, energy consumption cost) of brake disc, and the color and performance meet the requirement of various brake discs. DETAILED DESCRIPTION

[0023] The present application provides a kind of high temperature resistant metal paint, and high temperature resistant metal paint includes component one and component two;The mass ratio of component one and component two is 8-12:1;

[0024] Component one includes the following mass fraction of raw materials: organic silicon resin liquid 50-60 parts, organic silicon modified phenolic aldehyde epoxy resin 2-4 parts, rheological additive 1.5-8 parts, cellulose acetate butyrate 2-4 parts, aluminum powder 7-12 parts, antirust pigment 0.5-2 parts, defoaming agent 0.1-0.5 parts, dispersing agent 0.5-1.5 parts, organic solvent 18-25 parts;

[0025] Component two includes the following mass fraction of raw materials: polyamide resin 15-19 parts, silicon carbide fiber 1-3 parts, curing accelerator 0.4-1.0 parts, adhesion accelerator 0.2-0.5 parts, organic solvent 62-76 parts.

[0026] The mass ratio of component one and component two in the high temperature resistant metal paint of the present application is preferably 9-11:1, and further preferably 10:1.

[0027] Component one of the high temperature resistant metal paint of the present application contains 50-60 parts of organic silicon resin liquid, preferably 52-58 parts, further preferably 54-56 parts, and more preferably 55 parts.

[0028] In the present application, the organic silicon resin liquid preferably contains phenyl polytrimethylsiloxane and tetraepoxy cyclosiloxane, and the mass ratio of the phenyl polytrimethylsiloxane and tetraepoxy cyclosiloxane is preferably 4-7:1, further preferably 4.5-6.5:1, and more preferably 5-6:1.

[0029] In the present application, the phenyl polytrimethyl siloxane in the organic silicon resin liquid is broken at high temperature, the side chain functional group and the main chain are destroyed, converted into inorganic siloxane structure, the active site is formed at the breaking point and reacts with other components, forming a coating film with higher crosslinking density of inorganic siloxane structure, the high temperature resistance and salt spray resistance of the coating film are excellent, and the drying temperature and time are reduced; the tetraepoxy cyclosiloxane is used to enhance the hardness, wear resistance and chemical corrosion resistance of the metal paint, and meanwhile improve the high temperature resistance and mechanical properties.

[0030] The component one of the high temperature resistant metal paint comprises 2-4 parts of organic silicon modified phenolic epoxy resin, preferably 2.5-3.5 parts, and further preferably 3 parts.

[0031] In the present application, the organic silicon modified phenolic epoxy resin preferably comprises organic silicon resin and phenolic epoxy resin, and the mass ratio of the organic silicon resin and the phenolic epoxy resin is preferably 1:3-5, further preferably 1:3.5-4.5, and more preferably 1:4.

[0032] The component one of the high temperature resistant metal paint comprises 1.5-8 parts of rheological auxiliary agent, preferably 2-7 parts, further preferably 3-6 parts, and more preferably 4-5 parts.

[0033] In the present application, the rheological auxiliary agent preferably comprises polyethylene wax, polyamide wax and polytetrafluoroethylene wax; and the mass ratio of the polyethylene wax, the polyamide wax and the polytetrafluoroethylene wax is preferably 1-5:0.2-1.0:0.5-2.0, further preferably 2-4:0.4-0.8:0.8-1.6, and more preferably 3:0.5-0.6:1.0-1.3.

[0034] In the present application, the polytetrafluoroethylene wax has the characteristics of super high wear resistance, scratch resistance, lubricity and low friction coefficient; the polyamide wax has a strong anchoring effect on aluminum powder and anti-rust pigments, so that the aluminum powder and the anti-rust pigments are better oriented; and the polyethylene wax has good cold resistance, heat resistance, chemical resistance and wear resistance.

[0035] The component one of the high temperature resistant metal paint comprises 2-4 parts of cellulose acetate butyrate, preferably 2.5-3.5 parts, and further preferably 3 parts.

[0036] The component one of the high temperature resistant metal paint comprises 7-12 parts of aluminum powder, preferably 8-11 parts, and further preferably 9-10 parts.

[0037] In the present application, the particle size of the aluminum powder is preferably 300-900 nm, wherein the mass ratio of aluminum powder with a particle size of 300-400 nm (including 300 nm, excluding 400 nm), aluminum powder with a particle size of 400-600 nm (including 400 nm, excluding 600 nm) and aluminum powder with a particle size of 600-900 nm (including 600 nm and 900 nm) is preferably 2-4:1-3:1, and further preferably 3:2:1.

[0038] The component one of the high-temperature-resistant metal paint of the present application comprises 0.5-2 parts of anti-rust pigment, preferably 1-1.5 parts.

[0039] In the present application, the anti-rust pigment preferably comprises zinc phosphomolybdate and / or aluminum tripolyphosphate.

[0040] The component one of the high-temperature-resistant metal paint of the present application comprises 0.1-0.5 parts of defoaming agent, preferably 0.2-0.4 parts, and further preferably 0.3 parts.

[0041] In the present application, the defoaming agent is preferably a silicone-based defoaming agent, and further preferably a polydimethylsiloxane or amino silicone oil-based defoaming agent; the silicone-based defoaming agent not only has good compatibility with the resin, but also can improve the high-temperature resistance of the metal paint.

[0042] The component one of the high-temperature-resistant metal paint of the present application comprises 0.5-1.5 parts of dispersant, preferably 0.7-1.3 parts, further preferably 0.9-1.2 parts, and more preferably 1.0-1.1 parts.

[0043] In the present application, the aluminum powder and the anti-rust pigment are suspended by the electrostatic repulsion and steric hindrance of the dispersant, and do not settle or aggregate.

[0044] The component one of the high-temperature-resistant metal paint of the present application comprises 18-25 parts of organic solvent, preferably 20-24 parts, and further preferably 21-22 parts.

[0045] The organic solvent in the component one of the present application is preferably an aromatic solvent and an alcohol solvent, and the volume ratio of the aromatic solvent and the alcohol solvent is preferably 7-15:3-6, and further preferably 10-12:4-5; the aromatic solvent is preferably toluene or xylene, and the alcohol solvent is preferably ethylene glycol, n-butanol or isopropyl alcohol.

[0046] The component two of the high-temperature-resistant metal paint of the present application comprises 15-19 parts of polyamide resin, preferably 16-18 parts, and further preferably 17 parts.

[0047] In the present application, the polyamide resin is preferably polyamide-6, polyamide-66 or polyamide-610.

[0048] The component two of the high-temperature-resistant metal paint comprises 1-3 parts of silicon carbide fibers, preferably 1.5-2.5 parts, and further preferably 2 parts.

[0049] In the application, the silicon carbide fibers have low thermal conductivity, good insulation performance, high temperature resistance and good chemical stability.

[0050] The component two of the high-temperature-resistant metal paint comprises 0.4-1.0 parts of a curing accelerator, preferably 0.5-0.8 parts, and further preferably 0.6-0.7 parts.

[0051] In the application, the curing accelerator is preferably a modified aliphatic polyamine.

[0052] The component two of the high-temperature-resistant metal paint comprises 0.2-0.5 parts of an adhesion promoter, preferably 0.3-0.4 parts.

[0053] In the application, the adhesion promoter is preferably a silane adhesion promoter, and further preferably vinyl trimethoxysilane, propenyl trimethoxysilane or propenyl triaminomethoxysilane.

[0054] The component two of the high-temperature-resistant metal paint comprises 62-76 parts of an organic solvent, preferably 65-73 parts, and further preferably 68-70 parts.

[0055] The organic solvent in the component two is preferably an aromatic solvent, and the aromatic solvent is preferably toluene or xylene.

[0056] The application also provides a preparation method of the high-temperature-resistant metal paint, comprising the following steps:

[0057] 1) Preparation of component one: first mix the organosilicon resin solution, organosilicon modified phenolic epoxy resin, cellulose acetate butyrate, aluminum powder and organic solvent to obtain a mixed slurry; second mix the mixed slurry, rheological additive, anti-rust pigment, defoaming agent and dispersant to obtain component one;

[0058] Preparation of component two: mix the polyamide resin, silicon carbide fibers, curing accelerator, adhesion promoter and organic solvent to obtain component two;

[0059] 2) Mix component one and component two to obtain the high-temperature-resistant metal paint.

[0060] In the preparation of the component one of step 1), the speed of the first mixing is preferably 600-900 r / min, further preferably 700-800 r / min; the time of the first mixing is preferably 15-25 min, further preferably 17-22 min, more preferably 19-20 min; the speed of the second mixing is preferably 500-700 r / min, further preferably 600-650 r / min; the time of the second mixing is preferably 10-20 min, further preferably 13-17 min, more preferably 15 min.

[0061] In the preparation of the component two, the polyamide resin is preferably preheated before mixing with the silicon carbide fiber, the curing accelerator, the adhesion promoter and the organic solvent; the preheating temperature is preferably 70-90℃, further preferably 75-85℃, more preferably 80℃; the preheating time is preferably 10-15 h, further preferably 12-13 h; the preheated polyamide resin is in a flowable state.

[0062] In the preparation of the component two, the speed of the mixing is preferably 1000-1500 r / min, further preferably 1100-1400 r / min, more preferably 1200-1300 r / min; the time of the mixing is preferably 30-40 min, further preferably 33-37 min, more preferably 35-36 min.

[0063] The application further provides the use of the high-temperature-resistant metal paint in brake discs.

[0064] The technical solutions provided by the application will be described in detail below in combination with the embodiments, but they should not be understood as limiting the protection scope of the application.

[0065] In the examples, the mass ratio of the aluminum powder with a particle size of 300-400 nm, the aluminum powder with a particle size of 400-600 nm and the aluminum powder with a particle size of 600-900 nm is 3:2:1, the defoaming agent is an aminopropyl double-terminated polydimethylsiloxane defoaming agent, the dispersing agent is dispersing agent WA-8903, the length of the silicon carbide fiber is 30 μm, the diameter is 0.3 μm, the curing accelerator is modified aliphatic polyamine ANCAMRINE, the silicone resin in the silicone-modified phenolic epoxy resin is Q20MQ silicone resin, and the phenolic epoxy resin is F-44 phenolic epoxy resin. Q20MQ silicone resin, and the phenolic epoxy resin is F-44 phenolic epoxy resin.

[0066] Example 1

[0067] The high-temperature resistant metallic paint is a two-component metallic paint. Component one comprises the following raw materials in mass fraction: silicone resin solution 55 parts (mass ratio of phenyl polytrimethylsiloxane to tetraepoxycyclosiloxane is 5:1), silicone modified phenolic epoxy resin 3 parts (silicone modified phenolic epoxy resin is composed of silicone resin and phenolic epoxy resin in mass ratio of 1:4), rheological additive 5 parts (mass ratio of polyethylene wax, polyamide wax and polytetrafluoroethylene wax is 3:0.5:1.0), cellulose acetate butyrate 3 parts, aluminum powder 10 parts, anti-rust pigment (zinc phosphomolybdate) 1 part, defoaming agent 0.3 part, dispersant 1.0 part, and organic solvent 22 parts (volume ratio of xylene and isopropyl alcohol is 10:4); component two comprises the following raw materials in mass fraction: polyamide-6 resin 17 parts, silicon carbide fiber 2 parts, curing accelerator 0.6 part, adhesion promoter (vinyl trimethoxysilane) 0.3 part, and organic solvent (xylene) 68 parts.

[0068] The silicone resin solution, silicone modified phenolic epoxy resin, cellulose acetate butyrate, aluminum powder and organic solvent are mixed at a speed of 800 r / min for 20 min to obtain a mixed slurry; the mixed slurry, rheological additive, anti-rust pigment, defoaming agent and dispersant are mixed at a speed of 600 r / min for 15 min to obtain component one; the polyamide-6 resin is preheated at 80°C for 13 h to become a flowable state, and then mixed with the silicon carbide fiber, curing accelerator, adhesion promoter and organic solvent at a speed of 1200 r / min for 35 min to obtain component two. The component one and component two are mixed in a mass ratio of 10:1 to obtain the high-temperature resistant metallic paint.

[0069] Example 2

[0070] The high-temperature resistant metallic paint is a two-component metallic paint. Component one comprises the following raw materials in mass fraction: silicone resin solution 55 parts (mass ratio of phenyl polytrimethylsiloxane to tetraepoxycyclosiloxane is 5:1), silicone modified phenolic epoxy resin 3 parts (silicone modified phenolic epoxy resin is composed of silicone resin and phenolic epoxy resin in mass ratio of 1:4), rheological additive 5 parts (mass ratio of polyethylene wax, polyamide wax and polytetrafluoroethylene wax is 3:0.5:1.0), cellulose acetate butyrate 3 parts, aluminum powder 10 parts, anti-rust pigment (zinc phosphomolybdate) 1 part, defoaming agent 0.3 part, dispersant 1.0 part, and organic solvent 22 parts (volume ratio of xylene and isopropyl alcohol is 10:4); component two comprises the following raw materials in mass fraction: polyamide-6 resin 17 parts, silicon carbide fiber 2 parts, curing accelerator 0.6 part, adhesion promoter (vinyl trimethoxysilane) 0.3 part, and organic solvent (xylene) 68 parts.

[0071] The silicone resin solution, silicone modified phenolic epoxy resin, cellulose acetate butyrate, aluminum powder and organic solvent were mixed at a speed of 700 r / min for 25 min to obtain a mixed slurry; the mixed slurry, rheological additive, anti-rust pigment, defoaming agent and dispersant were mixed at a speed of 500 r / min for 20 min to obtain component one; the polyamide-610 resin was preheated at 75 °C for 15 h to become a flowable state, and then mixed with silicon carbide fiber, curing accelerator, adhesion promoter and organic solvent at a speed of 1100 r / min for 40 min to obtain component two. The component one and component two with a mass ratio of 9:1 were uniformly mixed to obtain the high-temperature resistant metal paint.

[0072] Example 3

[0073] The high-temperature resistant metal paint was a two-component metal paint, and component one contained the following raw materials in mass fraction: silicone resin solution 58 parts (the mass ratio of phenyl polytrimethylsiloxane to tetraepoxy cyclosiloxane was 7:1), silicone modified phenolic epoxy resin 3.5 parts (the silicone modified phenolic epoxy resin was composed of silicone resin and phenolic epoxy resin with a mass ratio of 1:4.5), rheological additive 7 parts (the mass ratio of polyethylene wax, polyamide wax and polytetrafluoroethylene wax was 4:0.6:1.6), cellulose acetate butyrate 4 parts, aluminum powder 12 parts, anti-rust pigment (zinc phosphomolybdate) 1.5 parts, defoaming agent 0.5 part, dispersant 1.2 parts, and organic solvent 24 parts (the volume ratio of dimethylbenzene to n-butanol was 7:3); component two contained the following raw materials in mass fraction: polyamide-66 resin 19 parts, silicon carbide fiber 3 parts, curing accelerator 0.8 part, adhesion promoter (propenyl triaminomethoxysilane) 0.5 part, and organic solvent (dimethylbenzene) 73 parts.

[0074] The silicone resin solution, silicone modified phenolic epoxy resin, cellulose acetate butyrate, aluminum powder and organic solvent were mixed at a speed of 900 r / min for 15 min to obtain a mixed slurry; the mixed slurry, rheological additive, anti-rust pigment, defoaming agent and dispersant were mixed at a speed of 650 r / min for 13 min to obtain component one; the polyamide-66 resin was preheated at 85 °C for 12 h to become a flowable state, and then mixed with silicon carbide fiber, curing accelerator, adhesion promoter and organic solvent at a speed of 1400 r / min for 30 min to obtain component two. The component one and component two with a mass ratio of 11:1 were uniformly mixed to obtain the high-temperature resistant metal paint.

[0075] Comparative Example 1

[0076] The silicone modified phenolic epoxy resin and cellulose acetate butyrate of Example 1 were omitted, the silicone resin solution was 40 parts, the rheological additive was a single polyethylene wax, and other conditions were the same as those of Example 1.

[0077] Comparative Example 2

[0078] The silicone resin liquid is single phenyl trimethyl siloxane, the cellulose acetate butyrate is 8 parts, the mass ratio of the aluminum powder with a particle size of 300-400 nm, the aluminum powder with a particle size of 400-600 nm and the aluminum powder with a particle size of 600-900 nm is 1:2:3, and other conditions are the same as those in Example 1.

[0079] The properties of the high-temperature-resistant metal paint of Examples 1-3 and Comparative Examples 1-2 were tested, wherein the state of the metal paint in the container, the color and appearance of the paint film, and the indentation of the stacking test were observed by visual observation; the viscosity was determined by GB / T9269-2009, the drying time (air dry, real dry, and oven dry) was determined by GB / T1728-2020, the grid test was performed by GB / T9286-2021, the bending test was performed by GB / T6742-2007, the salt spray resistance test was performed by GB / T1771-2007, the heat resistance test was performed by GB / T1735-2009, and the salt spray resistance test after heat resistance was performed by GB / T1771-2007 and GB / 1735-2009; the test results are shown in Table 1.

[0080] Table 1 Performance test results of the metal paint of Examples 1-3 and Comparative Examples 1-2

[0081]

[0082] The metal paint of the present application has excellent high-temperature resistance, salt spray resistance, good adhesion, and no indentation when packed at low temperature; it meets the requirements of the high-temperature 350℃ and low-temperature 80℃ baking production line for brake discs, and also meets the requirements of salt spray resistance for 240h after normal temperature curing and 168h after high-temperature baking; it reduces the production cost (raw material cost and energy consumption cost) of brake discs; and the color and performance meet the requirements of various brake discs. As can be seen from the examples and comparative examples, all the raw materials, their amounts, and the particle size of the aluminum powder are interrelated as a whole, and together determine the high-temperature resistance, salt spray resistance, and indentation resistance of the metal paint. Changing any raw material or its amount will reduce the high-temperature resistance, salt spray resistance, and indentation resistance of the metal paint.

[0083] The above is only a preferred embodiment of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A high temperature resistant metallic paint, characterized in that, The high-temperature resistant metal paint comprises component one and component two; the mass ratio of component one to component two is 8-12:1; Component one comprises raw materials in the following mass fractions: silicone resin liquid 50-60 parts, silicone modified phenolic epoxy resin 2-4 parts, rheological additive 1.5-8 parts, cellulose acetate butyrate 2-4 parts, aluminum powder 7-12 parts, anti-rust pigment 0.5-2 parts, defoaming agent 0.1-0.5 parts, dispersing agent 0.5-1.5 parts, and organic solvent 18-25 parts; Component two comprises raw materials in the following mass fractions: polyamide resin 15-19 parts, silicon carbide fiber 1-3 parts, curing accelerator 0.4-1.0 parts, adhesion promoter 0.2-0.5 parts, and organic solvent 62-76 parts; The silicone resin liquid comprises phenyl polytrimethylsiloxane and tetra-epoxy cyclosiloxane, and the mass ratio of phenyl polytrimethylsiloxane to tetra-epoxy cyclosiloxane is 4-7:1; The rheological additive comprises polyethylene wax, polyamide wax and polytetrafluoroethylene wax, and the mass ratio of polyethylene wax to polyamide wax to polytetrafluoroethylene wax is 1-5:0.2-1.0:0.5-2.

0.

2. The high temperature resistant metal paint according to claim 1, characterized in that, The silicone modified phenolic epoxy resin comprises silicone resin and phenolic epoxy resin, and the mass ratio of silicone resin to phenolic epoxy resin is 1:3-5.

3. The high temperature resistant metal paint according to claim 2, characterized in that, The aluminum powder has a particle size of 300-900 nm, and the mass ratio of aluminum powder with a particle size of 300-400 nm to aluminum powder with a particle size of 400-600 nm to aluminum powder with a particle size of 600-900 nm is 2-4:1-3:

1.

4. The high temperature resistant metal paint according to claim 3, characterized in that, The anti-rust pigment comprises zinc phosphomolybdate and / or aluminum tripolyphosphate, and the defoaming agent is a silicone-based defoaming agent.

5. The high temperature resistant metal paint according to claim 3, characterized in that, The curing accelerator is a modified aliphatic polyamine, and the adhesion promoter is a silane-based adhesion promoter.

6. The high temperature resistant metal paint according to claim 3 or 5, characterized in that, The organic solvent in component one is an aromatic solvent and an alcohol solvent, and the volume ratio of the aromatic solvent to the alcohol solvent is 7-15:3-6; the organic solvent in component two is an aromatic solvent.

7. The method of producing a high-temperature-resistant metallic paint according to any one of claims 1 to 6, characterized in that, The method comprises the following steps: 1) Preparation of component one: first mixing silicone resin liquid, silicone modified phenolic epoxy resin, cellulose acetate butyrate, aluminum powder and organic solvent to obtain mixed slurry; second mixing the mixed slurry, rheological additive, anti-rust pigment, defoaming agent and dispersing agent to obtain component one; Preparation of component two: mixing polyamide resin, silicon carbide fiber, curing accelerator, adhesion promoter and organic solvent to obtain component two; 2) Mixing component one and component two to obtain high-temperature resistant metal paint.

8. Use of the high-temperature resistant metal paint according to any one of claims 1-6 in brake discs.

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