Corrosion-resistant oil-stain-resistant aluminum profile color-changing low-carbon coating and spraying process thereof

Abstract

The invention relates to the technical field of coatings, and discloses an anti-corrosion and oil-stain-resistant aluminum profile color-changing low-carbon coating and a spraying process thereof, and the anti-corrosion and oil-stain-resistant aluminum profile color-changing low-carbon coating is prepared from the following components: fluororesin, surface grafted silicon carbide, alkyd resin, inorganic filler, benzoin, a flatting agent, precipitated barium sulfate, pigment filler, titanium dioxide and a brightener. The anti-corrosion and oil-stain-resistant aluminum profile color-changing low-carbon coating prepared by the invention is a powder coating, and volatile organic compounds (VOC) are not added in the coating preparation process, so that volatile pollution to the environment is not generated in the curing process after the coating is sprayed, the coating is low-carbon and environment-friendly, and meanwhile, the anti-corrosion and oil-stain-resistant aluminum profile color-changing low-carbon coating can be applied to the aluminum profile. The paint can form a uniform and compact coating on the surface of the aluminum profile, and can better provide protection for the aluminum profile.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, and in particular to an anti-corrosion and oil-resistant low-carbon coating for changing the color of aluminum profiles and a spraying process thereof. Background Art

[0002] Aluminum alloy is widely used in the fields of construction, transportation, aerospace, etc. due to its smooth and beautiful surface, good mechanical strength, easy processing and recycling. According to its use, it can be divided into aluminum veneer, aluminum plastic plate, aluminum ceiling and aluminum alloy profile. As a building material, aluminum alloy is mainly used for outdoor aluminum doors and windows, building exterior wall decoration materials, glass curtain wall support system, etc.

[0003] Powder coatings have the characteristics of good decorativeness, green environmental protection, efficient coating and excellent performance, and are widely used in aluminum profile coating.

[0004] A powder coating of the prior art, application number 201610151817.8, discloses "the present invention belongs to the field of chemical decorative coatings, and relates to a powder coating, wherein the coating is prepared by adding 1‰ to 30‰ of long-chain fatty acids or long-chain fatty acid metal soaps to a coating formula containing polyester, and the specific formula is as follows (by weight): 200 to 500 parts of epoxy resin, 50 to 400 parts of polyester resin, 8 to 10 parts of leveling agent, 8 to 15 parts of wetting promoter, 50 to 400 parts of pigments and fillers, 8 to 30 parts of aluminum silver powder, and 3 to 20 parts of long-chain fatty acids or long-chain fatty acid metal soaps. After the coating is formed into a film, the surface brightness is significantly improved, and the gloss at a 60-degree angle is increased from less than 100% to more than 150%; it has a strong metallic feel, similar to the electroplating effect, and can reduce the amount of silver powder used by more than 10%, thereby reducing the production cost." However, its anti-corrosion and anti-oil performance is relatively poor, which limits its application in multiple aluminum profile fields.

[0005] Based on this, we proposed a corrosion-resistant and oil-resistant low-carbon coating for aluminum profile color change, hoping to solve the shortcomings of the existing technology. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides an anti-corrosion and oil-resistant low-carbon paint for changing the color of aluminum profiles and a spraying process thereof.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0010] A corrosion-resistant and oil-resistant low-carbon paint for changing the color of aluminum profiles comprises the following components by weight: 80-95 parts of fluororesin, 10-14 parts of surface-grafted silicon carbide, 3-5 parts of alkyd resin, 5-8 parts of inorganic filler, 1-2 parts of benzoin, 1.5-3 parts of leveling agent, 3-5 parts of precipitated barium sulfate, 2-3 parts of color filler, 1-1.5 parts of titanium dioxide, and 0.2-0.5 parts of brightener.

[0011] As a further technical solution, the surface grafted silicon carbide preparation method is:

[0012] (1) First, add 500 mL of organic solvent into the reactor, adjust the temperature of the reactor to 60° C., then add 8.2 g of maleic anhydride, 44.4 g of reinforcing agent, and 68.2 g of vinyltrimethoxysilane into the reactor, and stir evenly;

[0013] (2) introducing an inert gas into the reactor to exhaust the air in the reactor;

[0014] (3) Soaking and cleaning the silicon carbide particles in anhydrous ethanol for 30 minutes, then taking them out and drying them to constant weight;

[0015] (4) Add 250 g of washed silicon carbide particles into the reactor, adjust the temperature in the reactor to 75° C., and then dropwise add 50 mL of the initiator solution while stirring. After the dropwise addition is completed, continue stirring for 2 hours;

[0016] (5) Discharging the reaction kettle, filtering, cleaning, and drying to obtain surface-grafted silicon carbide.

[0017] As a further technical solution, the organic solvent is toluene.

[0018] As a further technical solution: the enhancer is 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.

[0019] As a further technical solution, the inert gas is any one of nitrogen and neon.

[0020] As a further technical solution, the initiator solution is azobisisobutyronitrile solution;

[0021] The azobisisobutyronitrile solution preparation method is:

[0022] 10 g of azobisisobutyronitrile was added to 100 mL of toluene, and the mixture was stirred and mixed at room temperature to obtain.

[0023] As a further technical solution: the inorganic filler is calcium carbonate.

[0024] As a further technical solution: the leveling agent is a GLP588 leveling agent;

[0025] The brightener is GLP701 brightener.

[0026] As a further technical solution: the color filler is a coloring pigment;

[0027] The coloring pigments include phthalocyanine blue, benzidine yellow, toluidine red and the like.

[0028] A spraying process of a corrosion-resistant and oil-resistant aluminum profile color-changing low-carbon paint, comprising:

[0029] First, clean the surface of the aluminum profile to be sprayed, and then perform electrostatic spraying;

[0030] The electrostatic spraying conditions are as follows: electrostatic voltage 75kV, powder feeding amount 1.2kg / cm 2 ;

[0031] The sprayed aluminum profiles are sent into the drying room for drying;

[0032] The drying temperature in the drying chamber is 150°C, the drying time is 30 minutes, and after the drying is completed, the drying chamber is removed and cooled naturally to room temperature.

[0033] The sprayed coating thickness is controlled at 55 μm.

[0034] Fluororesin has poor wettability. Therefore, the present invention introduces a small amount of alkyd resin and combines the alkyd resin with the fluororesin to greatly improve the wettability of the fluororesin, thereby significantly improving the dispersion effect of each component of the system, making the melt leveling of the coating better during baking, significantly improving the surface smoothness of the coating, and correspondingly increasing the gloss of the coating.

[0035] The present invention utilizes the difference in cohesive energy between fluororesin and alkyd resin, so that during the curing process of the coating, the fluororesin is promoted to migrate to the coating surface, thereby greatly improving the anti-corrosion and anti-oil performance of the coating. By introducing surface grafted silicon carbide, it is tightly connected to the polymer molecular chain, which not only significantly promotes the improvement of the strength performance of the coating, but also significantly improves the aging resistance of the coating.

[0036] The present invention makes the microstructure of the film-forming material more uniform through the coordination of various components, thereby effectively avoiding the formation of stress concentration points, and further enabling the surface decorative performance of the coating to be fully exerted.

[0037] (III) Beneficial effects

[0038] Compared with the prior art, the present invention provides an anti-corrosion and anti-oil low-carbon paint for aluminum profile color change and its spraying process, which has the following beneficial effects:

[0039] The anti-corrosion and oil-resistant aluminum profile color-changing low-carbon coating prepared by the present invention is a powder coating. No volatile organic compounds (VOCs) are added during the preparation of the coating. Therefore, after spraying the coating of the present invention, during the curing process, no volatile pollution will be generated to the environment, and the coating is low-carbon and environmentally friendly. At the same time, the coating of the present invention can form a uniform and dense coating on the surface of the aluminum profile, which can better provide protection for the aluminum profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This figure is used to compare the effects of different surface grafted silicon carbide addition amounts on the aging resistance of coatings. DETAILED DESCRIPTION

[0041] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] The following are specific embodiments:

[0043] Example 1

[0044] An anti-corrosion and anti-oil low-carbon paint for aluminum profile color change, comprising the following components by weight: 80 parts of fluororesin, 10 parts of surface grafted silicon carbide, 3 parts of alkyd resin, 5 parts of calcium carbonate, 1 part of benzoin, 1.5 parts of GLP588 leveling agent, 3 parts of precipitated barium sulfate, 2 parts of pigments and fillers, 1 part of titanium dioxide, and 0.2 parts of GLP701 brightener; the pigments and fillers are coloring pigments;

[0045] The coloring pigments include phthalocyanine blue, benzidine yellow, toluidine red and the like.

[0046] The preparation method of surface grafted silicon carbide is:

[0047] (1) First, 500 mL of toluene was added to a reaction kettle, and the temperature in the reaction kettle was adjusted to 60° C. Then, 8.2 g of maleic anhydride, 44.4 g of an enhancer, and 68.2 g of vinyltrimethoxysilane were added to the reaction kettle, and stirred evenly; the enhancer was 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.

[0048] (2) introducing an inert gas into the reactor to exhaust the air in the reactor, wherein the inert gas is nitrogen;

[0049] (3) Soaking and cleaning the silicon carbide particles in anhydrous ethanol for 30 minutes, then taking them out and drying them to constant weight;

[0050] (4) adding 250 g of washed silicon carbide particles into a reactor, adjusting the temperature in the reactor to 75° C., and then dripping 50 mL of an initiator solution while stirring. After the dripping is completed, stirring is continued for 2 hours; the initiator solution is an azobisisobutyronitrile solution;

[0051] The azobisisobutyronitrile solution preparation method is:

[0052] 10 g of azobisisobutyronitrile was added to 100 mL of toluene, and the mixture was stirred and mixed at room temperature to obtain.

[0053] (5) Discharging the reaction kettle, filtering, cleaning, and drying to obtain surface-grafted silicon carbide.

[0054] A spraying process of a corrosion-resistant and oil-resistant aluminum profile color-changing low-carbon paint, comprising:

[0055] First, clean the surface of the aluminum profile to be sprayed, and then perform electrostatic spraying;

[0056] The electrostatic spraying conditions are as follows: electrostatic voltage 75kV, powder feeding amount 1.2kg / cm 2 ;

[0057] The sprayed aluminum profiles are sent into the drying room for drying;

[0058] The drying temperature in the drying chamber is 150°C, the drying time is 30 minutes, and after the drying is completed, the drying chamber is removed and cooled naturally to room temperature.

[0059] The sprayed coating thickness is controlled at 55 μm.

[0060] Example 2

[0061] An anti-corrosion and anti-oil low-carbon paint for aluminum profile color change, comprising the following components by weight: 86 parts of fluororesin, 12 parts of surface grafted silicon carbide, 3.5 parts of alkyd resin, 6 parts of calcium carbonate, 1.6 parts of benzoin, 1.8 parts of GLP588 leveling agent, 3 parts of precipitated barium sulfate, 2.5 parts of pigments and fillers, 1.1 parts of titanium dioxide, and 0.3 parts of GLP701 brightener; the pigments and fillers are coloring pigments;

[0062] The coloring pigments include phthalocyanine blue, benzidine yellow, toluidine red and the like.

[0063] The preparation method of surface grafted silicon carbide is:

[0064] (1) First, 500 mL of toluene was added to a reaction kettle, and the temperature in the reaction kettle was adjusted to 60° C. Then, 8.2 g of maleic anhydride, 44.4 g of an enhancer, and 68.2 g of vinyltrimethoxysilane were added to the reaction kettle, and stirred evenly; the enhancer was 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.

[0065] (2) introducing an inert gas into the reactor to exhaust the air in the reactor, wherein the inert gas is nitrogen;

[0066] (3) Soaking and cleaning the silicon carbide particles in anhydrous ethanol for 30 minutes, then taking them out and drying them to constant weight;

[0067] (4) adding 250 g of washed silicon carbide particles into a reactor, adjusting the temperature in the reactor to 75° C., and then dripping 50 mL of an initiator solution while stirring. After the dripping is completed, stirring is continued for 2 hours; the initiator solution is an azobisisobutyronitrile solution;

[0068] The azobisisobutyronitrile solution preparation method is:

[0069] 10 g of azobisisobutyronitrile was added to 100 mL of toluene, and the mixture was stirred and mixed at room temperature to obtain.

[0070] (5) Discharging the reaction kettle, filtering, cleaning, and drying to obtain surface-grafted silicon carbide.

[0071] A spraying process of a corrosion-resistant and oil-resistant aluminum profile color-changing low-carbon paint, comprising:

[0072] First, clean the surface of the aluminum profile to be sprayed, and then perform electrostatic spraying;

[0073] The electrostatic spraying conditions are as follows: electrostatic voltage 75kV, powder feeding amount 1.2kg / cm 2 ;

[0074] The sprayed aluminum profiles are sent into the drying room for drying;

[0075] The drying temperature in the drying chamber is 150°C, the drying time is 30 minutes, and after the drying is completed, the drying chamber is removed and cooled naturally to room temperature.

[0076] The sprayed coating thickness is controlled at 55 μm.

[0077] Example 3

[0078] An anti-corrosion and anti-oil low-carbon paint for aluminum profile color change, comprising the following components by weight: 90 parts of fluororesin, 12 parts of surface grafted silicon carbide, 3.5 parts of alkyd resin, 7 parts of calcium carbonate, 1.6 parts of benzoin, 2 parts of GLP588 leveling agent, 3.5 parts of precipitated barium sulfate, 2.5 parts of pigments and fillers, 1.2 parts of titanium dioxide, and 0.3 parts of GLP701 brightener; the pigments and fillers are coloring pigments;

[0079] The coloring pigments include phthalocyanine blue, benzidine yellow, toluidine red and the like.

[0080] The preparation method of surface grafted silicon carbide is:

[0081] (1) First, 500 mL of toluene was added to a reaction kettle, and the temperature in the reaction kettle was adjusted to 60° C. Then, 8.2 g of maleic anhydride, 44.4 g of an enhancer, and 68.2 g of vinyltrimethoxysilane were added to the reaction kettle, and stirred evenly; the enhancer was 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.

[0082] (2) introducing an inert gas into the reactor to exhaust the air in the reactor, wherein the inert gas is nitrogen;

[0083] (3) Soaking and cleaning the silicon carbide particles in anhydrous ethanol for 30 minutes, then taking them out and drying them to constant weight;

[0084] (4) adding 250 g of washed silicon carbide particles into a reactor, adjusting the temperature in the reactor to 75° C., and then dripping 50 mL of an initiator solution while stirring. After the dripping is completed, stirring is continued for 2 hours; the initiator solution is an azobisisobutyronitrile solution;

[0085] The azobisisobutyronitrile solution preparation method is:

[0086] 10 g of azobisisobutyronitrile was added to 100 mL of toluene, and the mixture was stirred and mixed at room temperature to obtain.

[0087] (5) Discharging the reaction kettle, filtering, cleaning, and drying to obtain surface-grafted silicon carbide.

[0088] A spraying process of a corrosion-resistant and oil-resistant aluminum profile color-changing low-carbon paint, comprising:

[0089] First, clean the surface of the aluminum profile to be sprayed, and then perform electrostatic spraying;

[0090] The electrostatic spraying conditions are as follows: electrostatic voltage 75kV, powder feeding amount 1.2kg / cm 2 ;

[0091] The sprayed aluminum profiles are sent into the drying room for drying;

[0092] The drying temperature in the drying chamber is 150°C, the drying time is 30 minutes, and after the drying is completed, the drying chamber is removed and cooled naturally to room temperature.

[0093] The sprayed coating thickness is controlled at 55 μm.

[0094] Example 4

[0095] An anti-corrosion and anti-oil low-carbon paint for aluminum profile color change, comprising the following components by weight: 92 parts of fluororesin, 13 parts of surface grafted silicon carbide, 4 parts of alkyd resin, 7 parts of calcium carbonate, 1.8 parts of benzoin, 2 parts of GLP588 leveling agent, 4.5 parts of precipitated barium sulfate, 2.8 parts of pigments and fillers, 1.3 parts of titanium dioxide, and 0.4 parts of GLP701 brightener; the pigments and fillers are coloring pigments;

[0096] The coloring pigments include phthalocyanine blue, benzidine yellow, toluidine red and the like.

[0097] The preparation method of surface grafted silicon carbide is:

[0098] (1) First, 500 mL of toluene was added to a reaction kettle, and the temperature in the reaction kettle was adjusted to 60° C. Then, 8.2 g of maleic anhydride, 44.4 g of an enhancer, and 68.2 g of vinyltrimethoxysilane were added to the reaction kettle, and stirred evenly; the enhancer was 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.

[0099] (2) introducing an inert gas into the reactor to exhaust the air in the reactor, wherein the inert gas is nitrogen;

[0100] (3) Soaking and cleaning the silicon carbide particles in anhydrous ethanol for 30 minutes, then taking them out and drying them to constant weight;

[0101] (4) adding 250 g of washed silicon carbide particles into a reactor, adjusting the temperature in the reactor to 75° C., and then dripping 50 mL of an initiator solution while stirring. After the dripping is completed, stirring is continued for 2 hours; the initiator solution is an azobisisobutyronitrile solution;

[0102] The azobisisobutyronitrile solution preparation method is:

[0103] 10 g of azobisisobutyronitrile was added to 100 mL of toluene, and the mixture was stirred and mixed at room temperature to obtain.

[0104] (5) Discharging the reaction kettle, filtering, cleaning, and drying to obtain surface-grafted silicon carbide.

[0105] A spraying process of a corrosion-resistant and oil-resistant aluminum profile color-changing low-carbon paint, comprising:

[0106] First, clean the surface of the aluminum profile to be sprayed, and then perform electrostatic spraying;

[0107] The electrostatic spraying conditions are as follows: electrostatic voltage 75kV, powder feeding amount 1.2kg / cm 2 ;

[0108] The sprayed aluminum profiles are sent into the drying room for drying;

[0109] The drying temperature in the drying chamber is 150°C, the drying time is 30 minutes, and after the drying is completed, the drying chamber is removed and cooled naturally to room temperature.

[0110] The sprayed coating thickness is controlled at 55 μm.

[0111] Example 5

[0112] A corrosion-resistant and oil-resistant aluminum profile color-changing low-carbon paint, comprising the following components by weight: 95 parts of fluororesin, 14 parts of surface-grafted silicon carbide, 5 parts of alkyd resin, 8 parts of calcium carbonate, 2 parts of benzoin, 3 parts of GLP588 leveling agent, 5 parts of precipitated barium sulfate, 3 parts of pigments and fillers, 1.5 parts of titanium dioxide, and 0.5 parts of GLP701 brightener; the pigments and fillers are coloring pigments;

[0113] The coloring pigments include phthalocyanine blue, benzidine yellow, toluidine red and the like.

[0114] The preparation method of surface grafted silicon carbide is:

[0115] (1) First, 500 mL of toluene was added to a reaction kettle, and the temperature in the reaction kettle was adjusted to 60° C. Then, 8.2 g of maleic anhydride, 44.4 g of an enhancer, and 68.2 g of vinyltrimethoxysilane were added to the reaction kettle, and stirred evenly; the enhancer was 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.

[0116] (2) introducing an inert gas into the reactor to exhaust the air in the reactor, wherein the inert gas is nitrogen;

[0117] (3) Soaking and cleaning the silicon carbide particles in anhydrous ethanol for 30 minutes, then taking them out and drying them to constant weight;

[0118] (4) adding 250 g of washed silicon carbide particles into a reactor, adjusting the temperature in the reactor to 75° C., and then dripping 50 mL of an initiator solution while stirring. After the dripping is completed, stirring is continued for 2 hours; the initiator solution is an azobisisobutyronitrile solution;

[0119] The azobisisobutyronitrile solution preparation method is:

[0120] 10 g of azobisisobutyronitrile was added to 100 mL of toluene, and the mixture was stirred and mixed at room temperature to obtain.

[0121] (5) Discharging the reaction kettle, filtering, cleaning, and drying to obtain surface-grafted silicon carbide.

[0122] A spraying process of a corrosion-resistant and oil-resistant aluminum profile color-changing low-carbon paint, comprising:

[0123] First, clean the surface of the aluminum profile to be sprayed, and then perform electrostatic spraying;

[0124] The electrostatic spraying conditions are as follows: electrostatic voltage 75kV, powder feeding amount 1.2kg / cm 2 ;

[0125] The sprayed aluminum profiles are sent into the drying room for drying;

[0126] The drying temperature in the drying chamber is 150°C, the drying time is 30 minutes, and after the drying is completed, the drying chamber is removed and cooled naturally to room temperature.

[0127] The sprayed coating thickness is controlled at 55 μm.

[0128] Comparative Example 1:

[0129] An anti-corrosion and anti-oil low-carbon paint for aluminum profile color change, comprising the following components by weight: 95 parts of fluororesin, 5 parts of alkyd resin, 8 parts of calcium carbonate, 2 parts of benzoin, 3 parts of GLP588 leveling agent, 5 parts of precipitated barium sulfate, 3 parts of pigments and fillers, 1.5 parts of titanium dioxide, and 0.5 parts of GLP701 brightener; the pigments and fillers are coloring pigments;

[0130] The coloring pigments include phthalocyanine blue, benzidine yellow, toluidine red and the like.

[0131] A spraying process of a corrosion-resistant and oil-resistant aluminum profile color-changing low-carbon paint, comprising:

[0132] First, clean the surface of the aluminum profile to be sprayed, and then perform electrostatic spraying;

[0133] The electrostatic spraying conditions are as follows: electrostatic voltage 75kV, powder feeding amount 1.2kg / cm 2 ;

[0134] The sprayed aluminum profiles are sent into the drying room for drying;

[0135] The drying temperature in the drying chamber is 150°C, the drying time is 30 minutes, and after the drying is completed, the drying chamber is removed and cooled naturally to room temperature.

[0136] The sprayed coating thickness is controlled at 55 μm.

[0137] test:

[0138] The glossiness of the aluminum profile sample after spraying the coating of the embodiment was tested according to GB / T9754-1988:

[0139] Table 1

[0140] Gloss (60°) Example 1 78 Example 2 76 Example 3 76 Example 4 78 Example 5 77

[0141] It can be seen from Table 1 that the coating formed by the coating prepared in the present invention has excellent glossiness.

[0142] Corrosion resistance test:

[0143] The aluminum profile samples of the spraying embodiment and the comparative example were tested according to GB / T 10125-2012;

[0144] Table 2

[0145]

[0146]

[0147] It can be seen from Table 2 that the coating formed by the coating prepared in the present invention has excellent anti-corrosion performance.

[0148] Limiting Oxygen Index (LOI) Test:

[0149] Oleophobic test:

[0150] The aluminum profile samples sprayed with the coating of the embodiment were subjected to oleophobic test, referring to GB / T 17713-2011;

[0151] Table 3

[0152] Oil contact angle (°) Example 1 55 Example 2 52 Example 3 53 Example 4 56 Example 5 55

[0153] It can be seen from Table 3 that the coating formed by the coating prepared in the present invention has excellent oleophobic properties, and thus can better resist oil stains.

[0154] Xenon lamp artificial accelerated aging test (gloss retention rate 90%), referring to GB / T 1865-2009, taking Example 1 as the basic sample, the effects of different surface grafted silicon carbide addition amounts on the aging resistance of the coating were compared. Figure 1 .

[0155] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-carbon paint for changing the color of aluminum profiles with anti-corrosion and anti-oil properties, characterized in that: The composition includes the following components by weight: 80-95 parts of fluororesin, 10-14 parts of surface grafted silicon carbide, 3-5 parts of alkyd resin, 5-8 parts of inorganic filler, 1-2 parts of benzoin, 1.5-3 parts of leveling agent, 3-5 parts of precipitated barium sulfate, 2-3 parts of color filler, 1-1.5 parts of titanium dioxide and 0.2-0.5 parts of brightener.

2. The anti-corrosion and anti-oil low-carbon paint for aluminum profile color change according to claim 1 is characterized in that: The surface grafted silicon carbide preparation method is: (1) First, add 500 mL of organic solvent into the reactor, adjust the temperature of the reactor to 60° C., then add 8.2 g of maleic anhydride, 44.4 g of reinforcing agent, and 68.2 g of vinyltrimethoxysilane into the reactor, and stir evenly; (2) introducing an inert gas into the reactor to exhaust the air in the reactor; (3) Soaking and cleaning the silicon carbide particles in anhydrous ethanol for 30 minutes, then taking them out and drying them to constant weight; (4) Add 250 g of washed silicon carbide particles into the reactor, adjust the temperature in the reactor to 75° C., and then dropwise add 50 mL of the initiator solution while stirring. After the dropwise addition is completed, continue stirring for 2 hours; (5) Discharging the reaction kettle, filtering, cleaning, and drying to obtain surface-grafted silicon carbide.

3. The anti-corrosion and anti-oil low-carbon paint for aluminum profile color change according to claim 2 is characterized in that: The organic solvent is toluene.

4. The anti-corrosion and anti-oil low-carbon paint for aluminum profile color change according to claim 2, characterized in that: The enhancer is 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.

5. The anti-corrosion and anti-oil low-carbon paint for aluminum profile color change according to claim 2 is characterized in that: The inert gas is any one of nitrogen and neon.

6. The anti-corrosion and anti-oil low-carbon paint for aluminum profile color change according to claim 2 is characterized in that: The initiator solution is azobisisobutyronitrile solution; The preparation method of the azobisisobutyronitrile solution is as follows: 10 g of azobisisobutyronitrile was added to 100 mL of toluene, and the mixture was stirred and mixed at room temperature to obtain.

7. The anti-corrosion and anti-oil low-carbon paint for aluminum profiles according to claim 1 is characterized by: The inorganic filler is calcium carbonate.

8. The anti-corrosion and anti-oil low-carbon paint for aluminum profiles according to claim 1 is characterized by: The leveling agent is GLP588 leveling agent; The brightener is GLP701 brightener.

9. The anti-corrosion and anti-oil low-carbon paint for aluminum profiles according to claim 1 is characterized by: The color filler is a coloring pigment; The coloring pigments include phthalocyanine blue, benzidine yellow, toluidine red and the like.

10. The spraying process of the anti-corrosion and anti-oil low-carbon paint for aluminum profiles according to claim 1 is characterized by: include: First, clean the surface of the aluminum profile to be sprayed, and then perform electrostatic spraying; The electrostatic spraying conditions are as follows: electrostatic voltage 75kV, powder feeding amount 1.2kg / cm 2 ; The sprayed aluminum profiles are sent into the drying room for drying; The drying temperature in the drying chamber is 150°C, the drying time is 30 minutes, and after the drying is completed, the drying chamber is removed and cooled naturally to room temperature. The sprayed coating thickness is controlled at 55 μm.

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