A kind of high temperature resistant color strip aluminum pigment and preparation method and application in spray-free material
Coating aluminum powder with silicon dioxide and metal oxide layers, followed by polyethylene or polypropylene wax, addresses dispersion and adhesion issues, resulting in uniform color and strong metallic texture with high temperature resistance.
Patent Information
- Application Number
- CN202411226461.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2044-09-03
AI Technical Summary
Existing spray-free materials using aluminum powder face issues with uneven dispersion, poor adhesion, and poor metallic texture due to the lack of specific gravity between them and the lack of specific gravity between them and the lack of specific gravity between them, resulting in materials with different colors and weak metallic texture due to the lack of specific gravity between them, resulting in materials with different colors and weak metallic texture, affecting appearance and adhesion.
Coating aluminum powder with a silicon dioxide layer and a metal oxide layer, followed by polyethylene wax or polypropylene wax, to improve dispersibility and adhesion, and enhance metallic texture and corrosion resistance.
The coated aluminum powder achieves uniform color, strong adhesion, and improved metallic texture, while maintaining high temperature resistance and corrosion resistance, suitable for direct injection molding.
Smart Images
Figure CN118725614B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of aluminum pigments, and in particular relates to a high-temperature resistant colored strip aluminum pigment, a preparation method thereof, and application thereof in spray-free materials. Background Art
[0002] The spray-free process is to achieve a similar effect of painting on the surface of the workpiece while realizing the molding of the plastic workpiece through direct injection molding. The spray-free process technology can greatly improve production efficiency, avoid environmental pollution, and reduce production costs. With the increase of public environmental awareness, the spray-free technology is increasingly valued by the industry. From raw materials, plastic formulas, mold design to injection molding process, the upstream and downstream of the industrial chain are actively developing technologies and processes related to spray-free, which greatly promotes the application of spray-free technology in various fields. At present, the spray-free technology has been applied to home appliances and automobiles, such as air conditioner and refrigerator shells, car door handles, car tail guards, etc.
[0003] Aluminum powder has a silvery white metallic luster, so it is commonly known as aluminum silver powder or silver powder. It is widely used as an effect pigment for spray-free materials. Most of the existing spray-free materials use metal aluminum bars, aluminum powder, pearl powder and other effect pigments directly blended with the base resin and then extruded and granulated by twin screws. When the effect pigment is added in a small proportion, due to the large difference in specific gravity between it and the base resin, there is a serious uneven phenomenon in the feeding process, resulting in the production of materials with different colors and weak metallic texture; if the addition amount is too large, it is not easy to evenly disperse into the slurry, and the adhesion is poor, the product is prone to scratches, affecting the appearance. Summary of the invention
[0004] Based on the above technical problems, the present invention provides a high temperature resistant colored strip aluminum pigment, a preparation method and an application in spray-free materials. The strip aluminum pigment can be effectively dispersed in the base resin of the spray-free material, has strong adhesion, uniform color and strong metallic texture.
[0005] The invention provides a high temperature resistant colored strip aluminum pigment, which is obtained by coating the surface of aluminum powder coated with a silicon dioxide layer and a metal oxide layer with polyethylene wax or polypropylene wax.
[0006] In the present invention, the aluminum powder surface coated with a silicon dioxide layer and a metal oxide layer is coated with polyethylene wax or polypropylene wax to obtain the strip aluminum pigment. On the one hand, the aluminum powder surface coated with polyethylene wax or polypropylene wax can improve the dispersibility of the aluminum powder in the matrix resin of the spray-free material, so that the spray-free material has a metallic luster and a bright color, and is close to the spraying effect, overcoming the shortcomings of the previous aluminum powder such as dull color, easy to dust, environmental pollution and other harm to the human body, and can be stored for a long time without being easily oxidized and having good dispersibility, adhesion, coloring ability and covering ability; on the other hand, the aluminum powder surface is also coated with a silicon dioxide layer and a metal oxide layer, which not only solves the shortcomings of poor corrosion resistance and single color of the aluminum powder, but also can well maintain the covering power of the aluminum powder, and further ensures acid and alkali corrosion resistance.
[0007] Preferably, the aluminum powder has a particle size of 10-100 μm and a thickness of 0.1-5 μm.
[0008] Preferably, the metal oxide layer is at least one of an iron oxide layer, an iron oxide layer, a ferrous oxide layer, a titanium dioxide layer, a tin dioxide layer, a nickel oxide layer, an aluminum oxide layer, a chromium oxide layer, a zirconium dioxide layer, a manganese dioxide layer, a cobalt oxide layer or a cobalt oxide layer;
[0009] Preferably, the coverage rate of the silicon dioxide layer is 1-50wt%, the coverage rate of the metal oxide layer is 10-100wt%; and the coverage rate of the polyethylene wax or polypropylene wax is 10-60wt%.
[0010] Preferably, the aluminum powder coated with the silicon dioxide layer and the metal oxide layer is obtained by sequentially hydrolyzing and depositing a silicon source and a metal salt on the surface of the aluminum powder;
[0011] Preferably, the silicon source is at least one of methyl orthosilicate, ethyl orthosilicate, propyl orthosilicate, butyl orthosilicate orthosilicate, or pentyl orthosilicate;
[0012] Preferably, the silicon source further comprises an aminosilane coupling agent, and the aminosilane coupling agent is at least one of 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane or 3-aminopropylmethyltriethoxysilane;
[0013] Preferably, the metal salt is at least one of ferric chloride, titanium chloride, tin chloride, nickel chloride, aluminum chloride, chromium chloride, zirconium chloride, manganese chloride or cobalt chloride.
[0014] In the present invention, a coated aluminum powder including a silicon dioxide layer and a metal oxide layer is prepared on the surface of the aluminum powder by a sol-gel method, which greatly improves the acid and alkali corrosion resistance and colorful performance of the aluminum powder.
[0015] The present invention also proposes a method for preparing the above-mentioned high-temperature resistant colored strip aluminum pigment, comprising: mixing aluminum powder coated with a silicon dioxide layer and a metal oxide layer with polyethylene wax or polypropylene wax, kneading, extruding granulation, and drying to obtain the above-mentioned colored strip aluminum pigment.
[0016] In the present invention, the strip-shaped aluminum pigment is processed and molded by kneading aluminum powder and polyethylene wax or polypropylene wax, extruding and drying.
[0017] Preferably, the kneading temperature is 20-30°C, the kneading time is 1-3h; the extrusion granulation temperature is 120-150°C;
[0018] Preferably, before the mixing, the process further comprises subjecting the aluminum powder coated with the silicon dioxide layer and the metal oxide layer to a condensation reaction with 2-bromoisobutyryl bromide, and then subjecting the aluminum powder to an atom transfer radical polymerization reaction with vinyl pyrrolidone.
[0019] In the present invention, groups such as amino groups and hydroxyl groups are grafted onto the surface of aluminum powder coated with a silicon dioxide layer and a metal oxide layer. Since amino groups or hydroxyl groups can undergo amidation or esterification condensation reactions with 2-bromoisobutyryl bromide, bromoisobutyramide or bromoisobutyl ester can be chemically grafted onto the surface of the aluminum powder, which can serve as an initiator for atom transfer radical polymerization to initiate surface-initiated atom transfer radical polymerization reaction of vinyl pyrrolidone. Finally, a layer of polyvinyl pyrrolidone is grafted onto the surface of the aluminum powder coated with a silicon dioxide layer and a metal oxide layer. When the polyvinyl pyrrolidone is mixed with polyethylene wax or polypropylene wax, the polyethylene wax or polypropylene wax can be effectively bonded to the surface of the aluminum powder, thereby ensuring that the polyethylene wax or polypropylene wax can tightly wrap the aluminum powder, and further improving the dispersibility and adhesion of the aluminum powder in the matrix resin of the spray-free material.
[0020] The present invention also provides an application of the above-mentioned colored strip aluminum pigment or the colored strip aluminum pigment prepared by the above-mentioned preparation method in a spray-free material.
[0021] Preferably, the amount of the colored strip-shaped aluminum pigment added to the spray-free material is 1-5wt%.
[0022] Beneficial effects of the present invention:
[0023] In the present invention, the surface of the aluminum powder is coated with a silicon dioxide layer, which improves the corrosion resistance of the aluminum powder; in addition, the surface of the aluminum powder is also coated with a metal oxide layer, which can give the aluminum powder a variety of colors; further, the surface of the aluminum powder is coated with polyethylene wax or polypropylene wax, which increases the coating density of the aluminum powder surface while also improving the metallic feel, dispersibility and high temperature resistance of the aluminum powder; finally, the colored strip aluminum pigment of the present invention can be used for direct injection molding, which is simple in process and can save costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the appearance of the colored strip aluminum pigment described in Example 1 used for a spray-free material. DETAILED DESCRIPTION
[0025] Hereinafter, the present invention will describe the technical solution in detail through specific embodiments, but it should be clearly stated that these embodiments are for illustration only and are not to be construed as limiting the scope of the present invention.
[0026] Example 1
[0027] This embodiment provides a high temperature resistant red strip aluminum pigment, which is prepared by the following method:
[0028] (1) Add commercially available aluminum pigment (solid content of 70 wt%) to ethanol 3 times the mass of the aluminum pigment and stir to mix. After stirring at 40°C for 3 h, wash off the solvent oil, additives and other substances on the surface of the aluminum powder. After solid-liquid separation, aluminum powder (D50 particle size of 30 μm, average thickness of 0.5) is obtained.
[0029] (2) adding aluminum powder to isopropanol with a mass of 6 times the mass of the aluminum powder and uniformly dispersing it by ultrasonication, then adding ammonia water (concentration of 15wt%) with a mass of 10wt% of the mass of the aluminum powder, stirring and mixing, heating to 50°C, and adding an isopropanol solution of 1 times the mass of the aluminum powder containing tetraethyl orthosilicate and 3-aminopropyltrimethoxysilane (the concentration of tetraethyl orthosilicate is 25wt% and the concentration of 3-aminopropyltrimethoxysilane is 5wt%) dropwise under rapid stirring conditions, stirring and reacting for 6h, aging, washing, and filtering to obtain aluminum powder coated with a silicon dioxide layer;
[0030] (3) Disperse aluminum powder coated with a silicon dioxide layer in deionized water, heat it to 90°C and stir to disperse it evenly, add hydrochloric acid (concentration of 30wt%) to adjust the pH to 3.5, then add ferric chloride solution (concentration of 10wt%) 3 times the mass of the aluminum powder, and at the same time dropwise add sodium hydroxide solution (concentration of 15wt%) to maintain a constant pH, continue to keep warm and stir for 20 minutes, wash, filter, dry, and calcine at 450°C for 30 minutes to obtain aluminum powder coated with a silicon dioxide layer and a ferric oxide layer;
[0031] (4) Aluminum powder coated with a silicon dioxide layer and a ferric oxide layer, polyethylene wax (40 wt% by weight of the aluminum powder) and antioxidant 1010 (1 wt% by weight of the aluminum powder) are mixed and added to a kneader. After kneading at 25° C. for 2 h, the resulting material is added to a twin-screw extruder, extruded and granulated at a temperature range of 120-150° C., and then placed in a drying oven and dried for 1 h at a temperature of 120° C. and a vacuum degree of ≤0.1 MPa to obtain the high-temperature resistant red strip aluminum pigment.
[0032] Example 2
[0033] This embodiment provides a high temperature resistant golden strip aluminum pigment, which is prepared by the following method:
[0034] (1) Add commercially available aluminum pigment (solid content of 70 wt%) to ethanol 3 times the mass of the aluminum pigment and stir to mix. After stirring at 40°C for 3 h, wash off the solvent oil, additives and other substances on the surface of the aluminum powder. After solid-liquid separation, aluminum powder (D50 particle size of 30 μm, average thickness of 0.5) is obtained.
[0035] (2) Add aluminum powder to isopropanol with a mass of 6 times the mass of aluminum powder and disperse it evenly by ultrasonication, then add ammonia water (concentration of 15wt%) with a mass of 10wt% of the mass of the aluminum powder, stir and mix, heat to 50°C, and add isopropanol solution containing 80wt% of the mass of the aluminum powder (concentration of 25wt% of the mass of the aluminum powder and concentration of 5wt% of the mass of the aluminum powder) dropwise under rapid stirring, stir and react for 6h, age, wash and filter to obtain aluminum powder coated with a silicon dioxide layer;
[0036] (3) Dispersing aluminum powder coated with a silicon dioxide layer in deionized water, heating to 90°C and stirring to disperse evenly, adding hydrochloric acid (concentration of 30wt%) to adjust the pH to 3, then adding titanium tetrachloride solution (concentration of 20wt%) twice the mass of the aluminum powder, and simultaneously adding sodium hydroxide solution (concentration of 15wt%) to maintain a constant pH, continuing to keep warm and stir for 20 minutes, washing, filtering, drying, and calcining at 450°C for 30 minutes to obtain aluminum powder coated with a silicon dioxide layer and a titanium dioxide layer;
[0037] (4) Aluminum powder coated with a silicon dioxide layer and a titanium dioxide layer, 20 wt% of polypropylene wax by weight of the aluminum powder, and 1 wt% of antioxidant 1076 by weight of the aluminum powder are mixed and added to a kneader. After kneading at 25° C. for 3 h, the resulting material is added to a twin-screw extruder, extruded and granulated at a temperature range of 120-150° C., and then placed in a drying oven and dried for 1 h at a temperature of 120° C. and a vacuum degree of ≤0.1 MPa to obtain the high-temperature resistant golden aluminum strip pigment.
[0038] Example 3
[0039] This embodiment provides a high temperature resistant green strip aluminum pigment, which is prepared by the following method:
[0040] (1) Add commercially available aluminum pigment (solid content of 70 wt%) to ethanol 3 times the mass of the aluminum pigment and stir to mix. After stirring at 40°C for 3 h, wash off the solvent oil, additives and other substances on the surface of the aluminum powder. After solid-liquid separation, aluminum powder (D50 particle size of 30 μm, average thickness of 0.5) is obtained.
[0041] (2) Add aluminum powder to isopropanol with a mass of 6 times the mass of aluminum powder and disperse it evenly by ultrasonic dispersion, then add ammonia water (concentration of 15wt%) with a mass of 10wt% of the mass of aluminum powder, stir and mix, heat to 50°C, and add isopropanol solution containing 1.5 times the mass of aluminum powder and ethyl orthosilicate and 3-aminopropyltrimethoxysilane (ethyl orthosilicate concentration of 25wt%, 3-aminopropyltrimethoxysilane concentration of 5wt%) dropwise under rapid stirring conditions, stir and react for 6h, age, wash and filter to obtain aluminum powder coated with a silicon dioxide layer;
[0042] (3) Dispersing aluminum powder coated with a silicon dioxide layer in deionized water, heating to 90°C and stirring to disperse evenly, adding hydrochloric acid (concentration of 30wt%) to adjust the pH to 5, then adding chromium trichloride solution (concentration of 15wt%) twice the mass of the aluminum powder, and simultaneously adding sodium hydroxide solution (concentration of 15wt%) to maintain a constant pH, continuing to keep warm and stir for 20 minutes, washing, filtering, drying, and calcining at 300°C for 30 minutes to obtain aluminum powder coated with a silicon dioxide layer and a chromium oxide layer;
[0043] (4) The aluminum powder coated with the silicon dioxide layer and the chromium oxide layer is added to 60 wt% of the polyethylene wax by weight of the aluminum powder and 1 wt% of the antioxidant 1010 by weight of the aluminum powder, and then added to a kneader. After kneading at 25° C. for 1 hour, the resulting material is added to a twin-screw extruder, extruded and granulated at a temperature range of 120-150° C., and then placed in a drying oven and dried for 1 hour at a temperature of 120° C. and a vacuum degree of ≤0.1 MPa to obtain the high temperature resistant green strip aluminum pigment.
[0044] Example 4
[0045] This embodiment provides a high temperature resistant red strip aluminum pigment, which is prepared by the following method:
[0046] (1) Add commercially available aluminum pigment (solid content of 70 wt%) to ethanol 3 times the mass of the aluminum pigment and stir to mix. After stirring at 40°C for 3 h, wash off the solvent oil, additives and other substances on the surface of the aluminum powder. After solid-liquid separation, aluminum powder (D50 particle size of 30 μm, average thickness of 0.5) is obtained.
[0047] (2) adding aluminum powder to isopropanol with a mass of 6 times the mass of the aluminum powder and uniformly dispersing it by ultrasonication, then adding ammonia water (concentration of 15wt%) with a mass of 10wt% of the mass of the aluminum powder, stirring and mixing, heating to 50°C, and adding an isopropanol solution of 1 times the mass of the aluminum powder containing tetraethyl orthosilicate and 3-aminopropyltrimethoxysilane (the concentration of tetraethyl orthosilicate is 25wt% and the concentration of 3-aminopropyltrimethoxysilane is 5wt%) dropwise under rapid stirring conditions, stirring and reacting for 6h, aging, washing, and filtering to obtain aluminum powder coated with a silicon dioxide layer;
[0048] (3) Disperse aluminum powder coated with a silicon dioxide layer in deionized water, heat it to 90°C and stir to disperse it evenly, add hydrochloric acid (concentration of 30wt%) to adjust the pH to 3.5, then add ferric chloride solution (concentration of 10wt%) 3 times the mass of the aluminum powder, and at the same time dropwise add sodium hydroxide solution (concentration of 15wt%) to maintain a constant pH, continue to keep warm and stir for 20 minutes, wash, filter, dry, and calcine at 450°C for 30 minutes to obtain aluminum powder coated with a silicon dioxide layer and a ferric oxide layer;
[0049] (4) Add aluminum powder coated with a silicon dioxide layer and a ferric oxide layer to toluene with a mass twice that of the aluminum powder and disperse it evenly by ultrasonication, then add triethylamine with a mass ratio of 5 wt% of the aluminum powder, stir and mix, then add a toluene solution (concentration of 50 wt%) containing 2-bromoisobutyryl bromide with a mass ratio of 10 wt% of the aluminum powder, heat to 60°C under nitrogen protection, stir and react for 6 hours, filter, dry, and then add an ethanol solution containing vinyl pyrrolidone, cuprous bromide and pentamethyldiethylenetriamine with a mass ratio of 1:0.05:0.1, where the amount of vinyl pyrrolidone is 20 wt% of the aluminum powder, stir and react at 40°C for 12 hours, filter, wash and dry to obtain the pretreated coated aluminum powder;
[0050] (5) The pretreated coated aluminum powder, 40 wt% of polyethylene wax by weight of the aluminum powder, and 1 wt% of antioxidant 1010 by weight of the aluminum powder are mixed and added to a kneader. After kneading at 25° C. for 2 h, the resulting material is added to a twin-screw extruder, extruded and granulated at a temperature range of 120-150° C., and then placed in a drying oven and dried for 1 h at a temperature of 120° C. and a vacuum degree of ≤0.1 MPa to obtain the high-temperature resistant red strip aluminum pigment.
[0051] Comparative Example 1
[0052] This comparative example proposes a high temperature resistant red strip aluminum pigment, which is prepared by the following method:
[0053] (1) Add commercially available aluminum pigment (solid content of 70 wt%) to ethanol 3 times the mass of the aluminum pigment and stir to mix. After stirring at 40°C for 3 h, wash off the solvent oil, additives and other substances on the surface of the aluminum powder. After solid-liquid separation, aluminum powder (D50 particle size of 30 μm, average thickness of 0.5) is obtained.
[0054] (2) adding aluminum powder to isopropanol with a mass of 6 times the mass of the aluminum powder and uniformly dispersing it by ultrasonication, then adding ammonia water (concentration of 15wt%) with a mass of 10wt% of the mass of the aluminum powder, stirring and mixing, heating to 50°C, and adding an isopropanol solution of 1 times the mass of the aluminum powder containing tetraethyl orthosilicate and 3-aminopropyltrimethoxysilane (the concentration of tetraethyl orthosilicate is 25wt% and the concentration of 3-aminopropyltrimethoxysilane is 5wt%) dropwise under rapid stirring conditions, stirring and reacting for 6h, aging, washing, and filtering to obtain aluminum powder coated with a silicon dioxide layer;
[0055] (3) Disperse aluminum powder coated with a silicon dioxide layer in deionized water, heat to 90°C and stir to disperse evenly, add hydrochloric acid (concentration of 30wt%) to adjust the pH to 3.5, then add ferric chloride solution (concentration of 10wt%) 3 times the mass of the aluminum powder, and simultaneously add sodium hydroxide solution (concentration of 15wt%) to maintain a constant pH, continue to keep warm and stir for 20 minutes, wash, filter, dry, and calcine at 450°C for 30 minutes to obtain aluminum powder coated with a silicon dioxide layer and a ferric oxide layer, which is the high temperature resistant red strip aluminum pigment.
[0056] 1wt% of the aluminum pigment described in the embodiment or comparative example, 98.9wt% of polypropylene (PP) and 0.1wt% of antioxidant 1010 were added to a mixer, mixed evenly, added to a twin-screw extruder, extruded and granulated within a temperature range of 180-220°C, and injection molded (injection molded into a small flat plate with a size of 80×80×2mm) to obtain a spray-free material. The L value of the material was tested with a spectrophotometer, the glossiness of the material at an angle of 60° was tested with a gloss meter, and the material was aged in a constant temperature and humidity chamber at 85°C / 85%RH for 240h. The color difference ΔE was tested according to GB / T 7921-2008 standard. The results are shown in Table 1 below:
[0057] Table 1
[0058] L value Glossiness Color difference △E Example 1 76.5 106.8 0.76 Example 2 74.2 105.0 0.85 Example 3 75.6 105.3 0.79 Example 4 78.3 108.4 0.63 Comparative Example 1 70.7 91.3 2.12
[0059] As shown in Table 1 above, the strip-shaped aluminum pigment prepared by the present invention has a higher degree of dispersion in the spray-free material, which is more conducive to obtaining a spray-free material with uniform color effect and high temperature resistance.
[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A high temperature resistant colored strip aluminum pigment, characterized in that: The aluminum powder surface coated with silicon dioxide layer and metal oxide layer is coated with polyethylene wax or polypropylene wax. The aluminum powder coated with the silicon dioxide layer and the metal oxide layer is obtained by sequentially hydrolyzing and depositing a silicon source and a metal salt on the surface of the aluminum powder; The silicon source is at least one of methyl orthosilicate, ethyl orthosilicate, propyl orthosilicate, butyl orthosilicate or pentyl orthosilicate; The silicon source further includes an aminosilane coupling agent, wherein the aminosilane coupling agent is at least one of 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane or 3-aminopropylmethyltriethoxysilane; The metal salt is at least one of ferric chloride, titanium chloride, tin chloride, nickel chloride, aluminum chloride, chromium chloride, zirconium chloride, manganese chloride or cobalt chloride.
2. The high temperature resistant colored strip aluminum pigment according to claim 1, characterized in that: The aluminum powder has a particle size of 10-100 μm and a thickness of 0.1-5 μm.
3. The high temperature resistant colored strip aluminum pigment according to claim 1 or 2, characterized in that: The metal oxide layer is at least one of a ferric oxide layer, a ferrous oxide layer, a titanium dioxide layer, a tin dioxide layer, a nickel oxide layer, an aluminum oxide layer, a chromium oxide layer, a zirconium dioxide layer, a manganese dioxide layer, a cobalt oxide layer or a cobalt oxide layer.
4. A method for preparing the high temperature resistant colored strip aluminum pigment according to any one of claims 1 to 3, characterized in that: include: The aluminum powder coated with the silicon dioxide layer and the metal oxide layer is mixed with polyethylene wax or polypropylene wax, kneaded, extruded into granules, and dried to obtain the colorful strip aluminum pigment.
5. The method for preparing the high temperature resistant colored strip aluminum pigment according to claim 4, characterized in that: The kneading temperature is 20-30°C, and the time is 1-3h; the extrusion granulation temperature is 120-150°C.
6. The method for preparing the high temperature resistant colored strip aluminum pigment according to claim 4 or 5, characterized in that: The mixed raw materials also include at least one of a lubricant, a coupling agent, an antioxidant, an anti-aging agent or a heat stabilizer; The lubricant is at least one of stearic acid, butyl stearate, sodium stearate or magnesium stearate, the antioxidant is at least one of antioxidant 1010, antioxidant 1076 or antioxidant 264, and the antioxidant is at least one of antioxidant ODA, antioxidant MB or antioxidant RD.
7. The method for preparing the high temperature resistant colored strip aluminum pigment according to claim 4 or 5, characterized in that: Before mixing, the method further includes subjecting the aluminum powder coated with the silicon dioxide layer and the metal oxide layer to a condensation reaction with 2-bromoisobutyryl bromide, and then subjecting the aluminum powder to an atom transfer radical polymerization reaction with vinyl pyrrolidone.
8. Use of the colored strip aluminum pigment according to any one of claims 1 to 3 or the colored strip aluminum pigment prepared by the preparation method according to any one of claims 4 to 7 in spray-free materials.
9. The use of the colored strip aluminum pigment in spray-free materials according to claim 8, characterized in that: The addition amount of the colored strip aluminum pigment in the spray-free material is 1-5wt%.