A special anti-corrosion coating for outdoor sports equipment and preparation method thereof

Abstract

The invention discloses a special anticorrosive coating for outdoor sports equipment and a preparation method thereof, which belongs to the technical field of anticorrosive coatings and comprises the following raw materials: water-based amino resin, water-based alkyd resin, graphene, modified nano titanium dioxide, iron powder, chromium powder, film-forming aid, defoamer, cosolvent, dispersant, emulsifier and solvent. The preparation method comprises the following steps: after mixing water-based amino resin and water-based alkyd resin with solvent, adding a solid powder mixture of graphene, modified nano titanium dioxide, iron powder and chromium powder to disperse evenly, then sequentially adding cosolvent, dispersant, emulsifier and film-forming aid to stir evenly, and finally adding defoamer to defoam. The raw materials in the present invention cooperate with each other, improve the salt and alkali resistance of the anticorrosive coating, and improve the weather resistance of the product at the same time, and the preparation method is simple, safe, does not pollute the environment, and the construction is relatively environmentally friendly and convenient. It takes water as the medium, is safe, non-toxic, does not cause harm to the human body, and is environmentally friendly.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-corrosion paints, and in particular relates to an anti-corrosion paint specially used for outdoor sports equipment and a preparation method thereof. Background Art

[0002] Most sports equipment is made of metal and needs to be protected with paint. Sports equipment is used by many people in daily life. During use, the sweat emitted by the human body and the bacteria in the air will contaminate the surface of the equipment. In order to prevent bacterial growth and cross-transmission, the surface coating of the equipment often has antibacterial and bactericidal effects. In addition, it will be subject to a lot of external forces and friction during daily use. Therefore, the surface coating of the equipment should not only have a soft elastic effect, but also be able to prevent the coating on the surface of the equipment from being scratched or damaged locally under the action of external forces such as heavy pressure, friction, and scratches. In addition, outdoor sports equipment will be exposed to wind, sun, wind and rain erosion, and its surface anti-corrosion paint is easy to fall off.

[0003] Therefore, how to provide an anti-corrosion paint for sports equipment is a technical problem that those skilled in the art need to solve urgently. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a special anti-corrosion coating for outdoor sports equipment and a preparation method thereof.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A special anti-corrosion coating for outdoor sports equipment, comprising the following raw materials in parts by weight:

[0007] 45-53 parts of water-based amino resin, 30-41 parts of water-based alkyd resin, 6-10 parts of graphene, 5-8 parts of modified nano titanium dioxide, 3-5 parts of iron powder, 6-10 parts of chromium powder, 1-2 parts of film-forming aid, 2-4 parts of defoaming agent, 1-3 parts of cosolvent, 3-5 parts of dispersant, 0.5-1.5 parts of emulsifier and 35-45 parts of solvent.

[0008] Preferably, the preparation method of the modified nano titanium dioxide comprises the following steps:

[0009] The nano titanium dioxide powder and sodium dodecylbenzene sulfonate are mixed and then water is added to carry out an oscillating reaction. After the reaction is completed, the modified nano titanium dioxide is obtained by centrifugation, collection of precipitation and drying.

[0010] Preferably, the reaction temperature is room temperature and the reaction time is 10-12 hours.

[0011] Beneficial effects: Nano titanium dioxide has a good ultraviolet shielding effect and can inhibit the oxidation of metals by air to a certain extent. The present invention modifies nano titanium dioxide by using sodium dodecylbenzene sulfonate, thereby enhancing the hydrophilicity of nano titanium dioxide and improving the ultraviolet light resistance of nano titanium dioxide.

[0012] Preferably, the film-forming aid is AH-12; and the solvent is water.

[0013] Preferably, the defoaming agent is one or any combination of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropanolamine ether, and polydimethylsiloxane.

[0014] Preferably, the co-solvent is one or any combination of methanol, ethanol, isooctyl alcohol and ethyl acetate.

[0015] Preferably, the dispersant includes one or any combination of polyoxyethylene alkylphenyl ether, dispersant 5040, DH-306, BYK-192 and EFKA-6220.

[0016] Preferably, the emulsifier is one or any combination of sodium stearoyl lactylate, sucrose fatty acid ester, diacetyl tartaric acid monoglyceride, TritonX-405 and TritonX-100.

[0017] Beneficial effects: The anticorrosive coating provided by the present invention is used for the outdoor sports equipment, wherein the outdoor sports equipment is all made of steel. The addition of iron powder in the present invention can improve the compatibility of the anticorrosive coating with the steel surface, thereby improving the adhesion of the coating and reducing its shedding rate. In addition, the chromium powder in the present invention can react with oxygen and water in the air to generate chromium oxide, thereby improving the compactness of the anticorrosive coating, thereby further preventing the corrosion of the steel by air, moisture and other corrosive substances, and improving the salt and alkali resistance of the anticorrosive coating. In addition, the graphene in the present invention has the effect of improving the antioxidant performance of the coating, and can improve the stability of the product.

[0018] A method for preparing a special anti-corrosion coating for outdoor sports equipment comprises the following steps:

[0019] Graphene, modified nano titanium dioxide, iron powder and chromium powder are ball-milled and mixed to obtain a solid powder mixture for use; then the water-based amino resin and water-based alkyd resin are mixed with a solvent, and then added to the solid powder mixture and dispersed evenly; then a cosolvent, a dispersant, an emulsifier and a film-forming aid are added in sequence and stirred evenly; finally, a defoaming agent is added for defoaming to obtain the special anti-corrosion coating for outdoor sports equipment.

[0020] Preferably, the ball milling time is 5-8h;

[0021] The stirring temperature is 50-65° C., the speed is 800-1000 r / min, and the time is 25-40 min.

[0022] Beneficial effects: The present invention first mixes and ball-mills solid raw materials such as graphene, modified nano titanium dioxide, iron powder and chromium powder to increase the specific surface area of ​​the solid raw materials, thereby improving their dispersion performance, which is beneficial to their uniform dispersion in the anti-corrosion coating.

[0023] Compared with the prior art, the present invention has the following advantages and technical effects:

[0024] The present invention uses water-based resin as the main raw material to prepare a water-based anticorrosive coating, adds graphene, modified nano titanium dioxide, iron powder and chromium powder to cooperate with the water-based resin, improves the adhesion ability of the anticorrosive coating on the surface of steel materials, and the weather resistance and salt and alkali resistance of the anticorrosive coating, effectively reduces the shedding rate of the anticorrosive coating of outdoor sports equipment, and the auxiliary agent in the present invention can make the raw materials more compatible, ensure that the coating is evenly dispersed, and no sedimentation occurs. The preparation method of the present invention is simple, safe, does not pollute the environment, and the construction is relatively environmentally friendly and convenient. It uses water as the medium, is safe, non-toxic, does not cause harm to the human body, and is environmentally friendly. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with specific implementation methods.

[0027] The raw materials in the present invention are all purchased from commercial sources.

[0028] Example 1

[0029] A special anti-corrosion coating for outdoor sports equipment, comprising the following raw materials in parts by weight:

[0030] 50 parts of water-based amino resin, 35 parts of water-based alkyd resin, 8 parts of graphene, 7 parts of modified nano titanium dioxide, 4 parts of iron powder, 8 parts of chromium powder, 1 part of AH-12, 3 parts of defoamer, 2 parts of cosolvent, 4 parts of dispersant, 1 part of emulsifier and 40 parts of water.

[0031] Wherein, the defoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether.

[0032] The co-solvent is a mixture of methanol and ethanol in a mass ratio of 1:1.

[0033] The dispersant is a mixture of dispersant 5040 and BYK-192 in a mass ratio of 1:1.

[0034] The emulsifier is a mixture of TritonX-405 and TritonX-100 in a mass ratio of 1:1.

[0035] A method for preparing a special anti-corrosion coating for outdoor sports equipment comprises the following steps:

[0036] (1) mixing nano titanium dioxide powder and sodium dodecylbenzene sulfonate, adding water, and carrying out shaking reaction at room temperature for 11 hours. After the reaction is completed, centrifuging, collecting the precipitate, and drying to obtain modified nano titanium dioxide;

[0037] (2) ball-milling the graphene, modified nano-titanium dioxide, iron powder and chromium powder for 6 hours to obtain a solid powder mixture for later use;

[0038] (3) Then, after mixing the water-based amino resin and the water-based alkyd resin with water, add the solid powder mixture to disperse evenly, then add the cosolvent, dispersant, emulsifier and film-forming aid in sequence, and stir at 800 r / min at 60° C. for 40 min. Finally, add the defoamer to defoam, and the special anti-corrosion coating for outdoor sports equipment is obtained.

[0039] Example 2

[0040] A special anti-corrosion coating for outdoor sports equipment, comprising the following raw materials in parts by weight:

[0041] 45 parts of water-based amino resin, 30 parts of water-based alkyd resin, 10 parts of graphene, 8 parts of modified nano titanium dioxide, 3 parts of iron powder, 6 parts of chromium powder, 1 part of AH-12, 4 parts of defoamer, 3 parts of cosolvent, 3 parts of dispersant, 0.5 parts of emulsifier and 45 parts of water.

[0042] The defoaming agent is a mixture of polyoxyethylene polyoxypropylene pentaerythritol ether and polydimethylsiloxane in a mass ratio of 1:1.

[0043] The cosolvent is isooctyl alcohol.

[0044] The dispersant is a mixture of polyoxyethylene alkylphenyl ether, DH-306 and EFKA-6220 in a mass ratio of 1:1:1.

[0045] The emulsifier is sodium stearoyl lactylate and sucrose fatty acid ester mixed in a mass ratio of 1:1.

[0046] A method for preparing a special anti-corrosion coating for outdoor sports equipment comprises the following steps:

[0047] (1) mixing nano titanium dioxide powder and sodium dodecylbenzene sulfonate, adding water, and carrying out shaking reaction at room temperature for 12 hours. After the reaction is completed, centrifuging, collecting the precipitate, and drying to obtain modified nano titanium dioxide;

[0048] (2) ball-milling the graphene, modified nano-titanium dioxide, iron powder and chromium powder for 5 h to obtain a solid powder mixture for later use;

[0049] (3) Then, after the water-based amino resin and the water-based alkyd resin are mixed with the solvent, the solid powder mixture is added and dispersed evenly, and then the cosolvent, dispersant, emulsifier and film-forming aid are added in sequence, and stirred at 65° C. at a rate of 1000 r / min for 25 min. Finally, a defoamer is added for defoaming to obtain a special anti-corrosion coating for outdoor sports equipment.

[0050] Example 3

[0051] A special anti-corrosion coating for outdoor sports equipment, comprising the following raw materials in parts by weight:

[0052] 53 parts of water-based amino resin, 41 parts of water-based alkyd resin, 6 parts of graphene, 5 parts of modified nano titanium dioxide, 5 parts of iron powder, 10 parts of chromium powder, 2 parts of AH-12, 2 parts of defoamer, 1 part of cosolvent, 5 parts of dispersant, 1.5 parts of emulsifier and 35 parts of water.

[0053] Wherein, the defoaming agent is polydimethylsiloxane.

[0054] The co-solvent is a mixture of methanol and ethyl acetate in a mass ratio of 1:1.

[0055] The dispersant is BYK-192 and EFKA-6220 mixed in a mass ratio of 1:1.

[0056] The emulsifier is a mixture of diacetyl tartaric acid monoglyceride and TritonX-100 in a mass ratio of 1:1.

[0057] A method for preparing a special anti-corrosion coating for outdoor sports equipment comprises the following steps:

[0058] (1) mixing nano titanium dioxide powder and sodium dodecylbenzene sulfonate, adding water, and carrying out oscillation reaction at room temperature for 10 hours. After the reaction is completed, centrifuging, collecting the precipitate, and drying to obtain modified nano titanium dioxide;

[0059] (2) ball-milling the graphene, modified nano-titanium dioxide, iron powder and chromium powder for 8 hours to obtain a solid powder mixture for later use;

[0060] (3) After the water-based amino resin and water-based alkyd resin are mixed with the solvent, the solid powder mixture is added and dispersed evenly, and then a cosolvent, a dispersant, an emulsifier and a film-forming aid are added in sequence, and stirred at a rate of 900 r / min at 50° C. for 40 minutes. Finally, a defoaming agent is added for defoaming to obtain a special anti-corrosion coating for outdoor sports equipment.

[0061] Comparative Example 1

[0062] A special anti-corrosion coating for outdoor sports equipment, which is different from Example 1 in that the modified nano titanium dioxide is replaced by nano titanium dioxide of equal mass.

[0063] Comparative Example 2

[0064] A special anti-corrosion coating for outdoor sports equipment, which is different from Example 1 in that it does not include iron powder and chromium powder.

[0065] Comparative Example 3

[0066] A special anti-corrosion coating for outdoor sports equipment, which is different from Example 1 in that it does not include graphene.

[0067] Technical Effects

[0068] After cleaning the steel surface to be coated with the coating to make it dust-free and stain-free, the anti-corrosion coating obtained in Examples 1-3 and Comparative Examples 1-3 is then applied to the cleaned steel surface. The coating thickness is controlled to be 200 μm. After the coating is completed, the steel is cured at 50-60°C for 24 hours to complete the coating. The coated steel is immersed in a saturated sodium chloride solution and a 30% sodium hydroxide solution respectively to test its salt and alkali resistance, and an artificial climate resistance test is carried out in accordance with the standard GB / T14522-2008, and an adhesion grade evaluation is carried out in accordance with the standard GB / T-1720-1797. The results are shown in Table 1:

[0069] Table 1

[0070]

[0071] As can be seen from Table 1, relative to Comparative Examples 1-3, the anticorrosive coating obtained in the embodiment of the present invention has good salt and alkali resistance, and can still maintain no blistering, no falling off and no rust for 60 days under immersion in saturated sodium chloride solution and alkaline solution. In addition, the anticorrosive coating obtained in the embodiment of the present invention has high adhesion on the surface of steel, good adaptation to the environmental climate, and can avoid the occurrence of falling off. In Comparative Example 1, nano titanium dioxide was not modified, so that the product adhesion and resistance to artificial climate change were enhanced, and the addition of iron powder and chromium powder in the present invention can also effectively improve the product adhesion and salt and alkali resistance, and the addition of graphene in the present invention effectively improves the salt and alkali resistance of the product. In addition, it can also be seen from Table 1 that there is a certain synergistic effect between the modified nano titanium dioxide, graphene, iron powder and chromium powder in the present invention, and the mutual synergy of several raw materials and the effect of the joint action on the improvement of the salt and alkali resistance of the anticorrosive coating are greater than the sum of the effects brought by the separate addition.

[0072] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A special anti-corrosion coating for outdoor sports equipment, characterized in that: The invention comprises the following raw materials in parts by weight: 45-53 parts of waterborne amino resin, 30-41 parts of waterborne alkyd resin, 6-10 parts of graphene, 5-8 parts of modified nano titanium dioxide, 3-5 parts of iron powder, 6-10 parts of chromium powder, 1-2 parts of film-forming aid, 2-4 parts of defoamer, 1-3 parts of cosolvent, 3-5 parts of dispersant, 0.5-1.5 parts of emulsifier and 35-45 parts of solvent; The preparation method of the modified nano titanium dioxide comprises the following steps: The nano titanium dioxide powder and sodium dodecylbenzene sulfonate are mixed and then water is added to carry out an oscillating reaction. After the reaction is completed, the modified nano titanium dioxide is obtained by centrifugation, collection of precipitates and drying. The outdoor sports equipment is made of steel; The preparation method of the special anti-corrosion coating for outdoor sports equipment comprises the following steps: Graphene, modified nano titanium dioxide, iron powder and chromium powder are ball-milled and mixed to obtain a solid powder mixture for use; then the water-based amino resin and water-based alkyd resin are mixed with a solvent, and then added to the solid powder mixture and dispersed evenly; then a cosolvent, a dispersant, an emulsifier and a film-forming aid are added in sequence and stirred evenly; finally, a defoaming agent is added for defoaming to obtain the special anti-corrosion coating for outdoor sports equipment.

2. The anti-corrosion coating for outdoor sports equipment according to claim 1, characterized in that: The reaction temperature is room temperature and the reaction time is 10-12 hours.

3. The anti-corrosion coating for outdoor sports equipment according to claim 1, characterized in that: The film-forming aid is AH-12; and the solvent is water.

4. The anti-corrosion coating for outdoor sports equipment according to claim 1, characterized in that: The defoaming agent is one or any combination of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropanolamine ether and polydimethylsiloxane.

5. The anti-corrosion coating for outdoor sports equipment according to claim 1, characterized in that: The co-solvent is one or any combination of methanol, ethanol, isooctyl alcohol and ethyl acetate.

6. The anti-corrosion coating for outdoor sports equipment according to claim 1, characterized in that: The dispersant includes one or any combination of polyoxyethylene alkylphenyl ether, dispersant 5040, DH-306, BYK-192 and EFKA-6220.

7. The anti-corrosion coating for outdoor sports equipment according to claim 1, characterized in that: The emulsifier is one or any combination of sodium stearoyl lactylate, sucrose fatty acid ester, diacetyl tartaric acid monoglyceride, TritonX-405 and TritonX-100.

8. A method for preparing a special anti-corrosion coating for outdoor sports equipment according to any one of claims 1 to 7, characterized in that: The following steps are involved: Graphene, modified nano titanium dioxide, iron powder and chromium powder are ball-milled and mixed to obtain a solid powder mixture for use; then the water-based amino resin and water-based alkyd resin are mixed with a solvent, and then added to the solid powder mixture and dispersed evenly; then a cosolvent, a dispersant, an emulsifier and a film-forming aid are added in sequence and stirred evenly; finally, a defoaming agent is added for defoaming to obtain the special anti-corrosion coating for outdoor sports equipment.

9. The method for preparing a special anti-corrosion coating for outdoor sports equipment according to claim 8, characterized in that: The ball milling time is 5-8h; The stirring temperature is 50-65° C., the speed is 800-1000 r / min, and the time is 25-40 min.

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