High-flash-point alkyd aluminum powder paint and preparation method thereof

Abstract

The invention provides high-flash-point alkyd aluminum powder paint and a preparation method thereof, and belongs to the technical field of outdoor protective paints.The high-flash-point alkyd aluminum powder paint is prepared from, by weight, 20-25% of high-flash-point alkyd resin, 35-40% of C9 petroleum resin solution, 13-18% of floating aluminum paste and 20-25% of high-flash-point aromatic hydrocarbon solvent; the mass of C9 petroleum resin in the C9 petroleum resin solution accounts for 60% of the mass of the solution. According to the high-flash-point alkyd aluminum powder paint and the preparation method thereof, the purposes that the formula components are few, the process is simple, and the paint storage stability and the paint film metal appearance effect are high are achieved.

Description

Technical Field

[0001] This invention relates to the field of outdoor protective coatings technology, specifically to a high flash point alkyd aluminum powder paint and its preparation method. Background Technology

[0002] Alkyd coatings are polymer coatings with alkyd resin as the main film-forming substance, possessing excellent weather resistance, corrosion resistance, and decorative properties. However, traditional alkyd coatings have relatively low flash points and are classified as hazardous chemicals. With increasingly stringent national regulations on hazardous chemicals, corresponding production, storage, and transportation conditions have become more stringent. Meanwhile, aluminum powder paint offers excellent metallic appearance, possessing properties such as corrosion resistance, rust prevention, water resistance, temperature resistance, reflectivity, fast drying, and strong adhesion, making it commonly used for outdoor protection. The combination of these two elements has resulted in high-flash-point alkyd aluminum powder paint. However, high-flash-point alkyd aluminum powder paint suffers from problems such as easy film deterioration after application, poor metallic effect, and blackening of the aluminum powder paint after storage.

[0003] Patent publication number CN117844332A, entitled "A High Flash Point, Low VOC Silver Powder Enamel and Its Preparation Method," discloses a high flash point, low VOC silver powder enamel that is easy to apply, has strong adhesion, good water resistance, excellent storage stability, and produces a bright film. It comprises the following components, expressed in the following weight ratios: 55-65 parts silver powder enamel resin, 8-15 parts floating aluminum powder, 0.1-1 parts dispersant, and dispersant... The composition comprises 0.1-0.5 parts of agent, 0.1-0.5 parts of orientation agent, 3-15 parts of solvent, 0.5-1 part of emulsifier A, 0.1-0.5 parts of emulsifier B, 0.01-0.05 parts of ethylene glycol, and 15-30 parts of deionized water, with the total weight of all components being 100 parts. It has a viscosity of 15±5s (Ford cup 4, 23℃), a solid content of 55±5%, a flash point ≥62℃, and VOC ≤350g / L. However, the preparation process of the special resin for silver powder paint in the above technical solution is complex and involves numerous raw materials. For example, the special resin for silver powder paint first requires modification of petroleum resin, followed by thermal polymerization of the modified petroleum resin, emulsification of water, and the addition of dispersants, orientation agents, and other additives. Summary of the Invention

[0004] In view of this, the present invention provides a high flash point alkyd aluminum powder paint and its preparation method, which achieves the purpose of having fewer formulation components, simple process, and strong coating storage stability and metallic appearance.

[0005] To achieve the above objectives, the present invention provides a high flash point alkyd aluminum powder paint, comprising the following components by weight percentage: 20-25% high flash point alkyd resin, 35-40% C9 petroleum resin solution, 13-18% floating aluminum powder slurry, and 20-25% high flash point aromatic hydrocarbon solvent; wherein the mass of C9 petroleum resin in the C9 petroleum resin solution accounts for 60% of the solution mass.

[0006] Optionally, the solvent for the C9 petroleum resin solution is a high flash point aromatic hydrocarbon solvent.

[0007] Optionally, the high flash point alkyd resin is Changxing Chemical's 11072-70.

[0008] Optionally, the C9 petroleum resin is Qilong Chemical's low molecular weight thermoplastic aromatic C9 petroleum resin L-120.

[0009] Optionally, the high flash point aromatic hydrocarbon solvent is Jiangsu Hualun Chemical Co., Ltd.'s S-150 solvent oil.

[0010] Optionally, the floating aluminum powder slurry is Anhui Xuyang New Material Co., Ltd.'s floating aluminum powder slurry 013S.

[0011] To achieve the above objectives, the present invention also provides a method for preparing high flash point alkyd aluminum powder paint, comprising the following steps: mixing high flash point alkyd resin with C9 petroleum resin solution for medium-speed dispersion, then adding floating aluminum powder slurry for medium-speed dispersion, and finally adding high flash point aromatic hydrocarbon solvent for uniform mixing. After the viscosity is tested and found to meet the standard, high flash point alkyd aluminum powder paint is obtained.

[0012] Optionally, the rotation speed of the medium-speed dispersion is 600~800 r / min; the medium-speed dispersion time of the high flash point alkyd resin and C9 petroleum resin solution is 20~30 min; and the medium-speed dispersion time of adding floating aluminum powder slurry is 8~12 min.

[0013] Optionally, the viscosity meets the standard by taking a sample and measuring it with an ISO 6# cup, with a flow time of 20±4 seconds.

[0014] Optionally, the preparation of the C9 petroleum resin solution includes the following steps: placing a high flash point aromatic hydrocarbon solvent into a container with a dispersion disk for medium-speed dispersion, aligning it with the center of the dispersion disk, slowly adding C9 petroleum resin for feeding, after feeding, rinsing the stirring slurry and the surrounding area of ​​the container with the high flash point aromatic hydrocarbon solvent, and then performing high-speed dispersion, stopping the dispersion after the fineness test meets the standard.

[0015] Optionally, the diameter ratio of the dispersion disc to the container diameter is 0.4-0.6; the rotation speed of the medium-speed dispersion is 600-800 r / min, the rotation speed of the high-speed dispersion is 1800-2000 r / min, and the high-speed dispersion time is 20-30 min.

[0016] Optionally, the fineness requirement is ≤15μm.

[0017] The above-described technical solution of the present invention has at least the following beneficial effects: Compared with the prior art, the technical solution provided by this invention omits the drying agents, defoamers, leveling agents, dispersants, anti-settling agents, and anti-skinning agents used in conventional self-drying alkyd coating systems, and uses the simplest combination of components to prepare high flash point alkyd aluminum powder paint with better comprehensive performance.

[0018] The technical solution provided by this invention has a formula with few components, a simple process, and produces a coating film with good metallic effect, strong storage stability, and a high flash point. Attached Figure Description

[0019] Figure 1 This is a diagram showing the paint film exhibiting a good silvery-white metallic luster in an embodiment of the present invention; Figure 2 This is a diagram showing a poor metallic appearance of the paint film in an embodiment of the present invention; Figure 3 This is a diagram illustrating the metallic appearance of the paint film in an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figures 1-3 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0021] Example 1 This invention provides a high flash point aluminum alkyd powder paint, comprising the following components by weight percentage: High flash point alkyd resin 20% 60% C9 petroleum resin solution 40% Floating aluminum powder slurry 15% 25% of high flash point aromatic hydrocarbon solvents The 60% C9 petroleum resin formulation is as follows: 40% of high flash point aromatic hydrocarbon solvents C9 petroleum resin 60% The high flash point alkyd resin is Changxing Chemical's 11072-70; the C9 petroleum resin is Qilong Chemical's low molecular weight thermoplastic aromatic C9 petroleum resin L-120; the high flash point aromatic hydrocarbon solvent is Jiangsu Hualun Chemical Co., Ltd.'s S-150 solvent oil (low naphthalene); and the aluminum powder slurry is Anhui Xuyang New Material Co., Ltd.'s floating aluminum powder slurry 013S.

[0022] This invention provides a method for preparing high flash point alkyd aluminum powder paint, comprising the following steps: Weigh the required components according to the above weight percentages and set aside. Preparation of 60% C9 petroleum resin: Take a clean container and select a suitable dispersion disc with a diameter ratio of 0.5 to the container diameter. Place the high flash point aromatic hydrocarbon solvent into the container with the dispersion disc and disperse it at a medium speed of 800 rpm. Slowly add C9 petroleum resin to the center of the dispersion disc. After feeding, rinse the agitator and the container with the high flash point aromatic hydrocarbon solvent. Then, disperse at a high speed of 1800 rpm for 30 minutes. Stop the dispersion when the fineness is ≤15 μm to obtain a 60% C9 petroleum resin solution. Cool the solution to room temperature before use. Preparation of high flash point alkyd aluminum powder paint: First, add high flash point alkyd resin to the dispersion tank, then add 60% C9 petroleum resin solution, and disperse at a medium speed of 800 r / min for 20 min; add floating aluminum powder slurry, disperse at 800 r / min for 10 min, then add high flash point aromatic hydrocarbon solvent, and take a sample to test the viscosity of the finished product in ISO 6# cup. If the viscosity is within 20±4S, it is high flash point alkyd aluminum powder paint.

[0023] Example 2 This invention provides a high flash point aluminum alkyd powder paint, comprising the following components by weight percentage: High flash point alkyd resin 25% 60% C9 petroleum resin solution 35% Floating aluminum powder slurry 18% High flash point aromatic hydrocarbon solvent 22% The 60% C9 petroleum resin formulation is as follows: 40% of high flash point aromatic hydrocarbon solvents C9 petroleum resin 60% The high flash point alkyd resin is Changxing Chemical's 11072-70; the C9 petroleum resin is Qilong Chemical's low molecular weight thermoplastic aromatic C9 petroleum resin L-120; the high flash point aromatic hydrocarbon solvent is Jiangsu Hualun Chemical Co., Ltd.'s S-150 solvent oil (low naphthalene); and the aluminum powder slurry is Anhui Xuyang New Material Co., Ltd.'s floating aluminum powder slurry 013S.

[0024] This invention provides a method for preparing high flash point alkyd aluminum powder paint, comprising the following steps: Weigh the required components according to the above weight percentages and set aside. Preparation of 60% C9 petroleum resin: Take a clean container and select a suitable dispersion disc with a diameter ratio of 0.4 to the container diameter. Place the high flash point aromatic hydrocarbon solvent into the container with the dispersion disc and disperse it at a medium speed of 700 rpm. Slowly add C9 petroleum resin to the center of the dispersion disc. After feeding, rinse the agitator and the container with the high flash point aromatic hydrocarbon solvent. Then, disperse at a high speed of 2000 rpm for 20 min. Stop the dispersion when the fineness is ≤15 μm to obtain a 60% C9 petroleum resin solution. Cool the solution to room temperature before use. Preparation of high flash point alkyd aluminum powder paint: First, add high flash point alkyd resin to the dispersion tank, then add 60% C9 petroleum resin solution, and disperse at a medium speed of 600 r / min for 30 min; add floating aluminum powder slurry, disperse at 600 r / min for 12 min, then add high flash point aromatic hydrocarbon solvent, and take a sample to test the viscosity of the finished product in ISO 6# cup. If the viscosity is within 20±4S, it is high flash point alkyd aluminum powder paint.

[0025] Example 3 This invention provides a high flash point aluminum alkyd powder paint, comprising the following components by weight percentage: High flash point alkyd resin 22% 60% C9 petroleum resin solution 40% Floating aluminum powder slurry 13% 25% of high flash point aromatic hydrocarbon solvents The 60% C9 petroleum resin formulation is as follows: 40% of high flash point aromatic hydrocarbon solvents C9 petroleum resin 60% The high flash point alkyd resin is Changxing Chemical's 11072-70; the C9 petroleum resin is Qilong Chemical's low molecular weight thermoplastic aromatic C9 petroleum resin L-120; the high flash point aromatic hydrocarbon solvent is Jiangsu Hualun Chemical Co., Ltd.'s S-150 solvent oil (low naphthalene); and the aluminum powder slurry is Anhui Xuyang New Material Co., Ltd.'s floating aluminum powder slurry 013S.

[0026] This invention provides a method for preparing high flash point alkyd aluminum powder paint, comprising the following steps: Weigh the required components according to the above weight percentages and set aside. Preparation of 60% C9 petroleum resin: Take a clean container and select a suitable dispersion disc with a diameter ratio of 0.6 to the container diameter. Place the high flash point aromatic hydrocarbon solvent into the container with the dispersion disc and disperse it at a medium speed of 600 rpm. Slowly add C9 petroleum resin to the center of the dispersion disc. After feeding, rinse the agitator and the container with the high flash point aromatic hydrocarbon solvent. Then, disperse at a high speed of 1900 rpm for 25 min. Stop the dispersion when the fineness is ≤15 μm to obtain a 60% C9 petroleum resin solution. Cool the solution to room temperature before use. Preparation of high flash point alkyd aluminum powder paint: First, add high flash point alkyd resin to the dispersion tank, then add 60% C9 petroleum resin solution, and disperse at a medium speed of 700 r / min for 25 min; add floating aluminum powder slurry, disperse at 700 r / min for 8 min, then add high flash point aromatic hydrocarbon solvent, and take a sample to test the viscosity of the finished product in ISO 6# cup. If the viscosity is within 20±4S, it is high flash point alkyd aluminum powder paint.

[0027] Comparative Example 1 Compared with Example 1, the only difference is that it includes the following components by weight percentage: 50% high flash point alkyd resin, 15% floating aluminum powder slurry, 0.2% metal drier, and 34.8% high flash point aromatic hydrocarbon solvent.

[0028] The remaining steps and operations are the same as in Example 1.

[0029] Comparative Example 2 Compared with Example 1, the only difference is that it includes the following components by weight percentage: 60% C9 petroleum resin, 15% floating aluminum powder slurry, and 25% high flash point aromatic hydrocarbon solvent.

[0030] The remaining steps and operations are the same as in Example 1.

[0031] Comparative Example 3 Compared with Example 1, the only difference is that 60% C5 petroleum resin is used instead of 60% C9 petroleum resin.

[0032] The remaining steps and operations are the same as in Example 1.

[0033] Comparative Example 4 Compared with Example 1, the only difference is the addition of 0.2% metal drier and 24.8% high flash point aromatic hydrocarbon solvent.

[0034] The remaining steps and operations are the same as in Example 1.

[0035] Comparative Example 5 Compared with Example 1, the only difference is the addition of 0.2% silicone leveling agent and 24.8% high flash point aromatic hydrocarbon solvent.

[0036] The remaining steps and operations are the same as in Example 1.

[0037] Comparative Example 6 Compared with Example 1, the only difference is the addition of 0.1% silicone defoamer and 24.9% high flash point aromatic hydrocarbon solvent.

[0038] The remaining steps and operations are the same as in Example 1.

[0039] Comparative Example 7 Compared with Example 1, the only difference is the addition of 0.2% anti-settling agent and 24.8% high flash point aromatic hydrocarbon solvent.

[0040] The remaining steps and operations are the same as in Example 1.

[0041] The formulations of Examples 1-3 and Comparative Examples 1-7 are shown in Table 1.

[0042] Table 1 Formulations of Examples 1-3 and Comparative Examples 1-7

[0043] The performance of the alkyd aluminum powder paints prepared in Examples 1 to 3 and Comparative Examples 1 to 7 was tested, and the performance test results are shown in Table 2 below.

[0044] Table 2 Performance test results of alkyd aluminum powder paints prepared in Examples 1-3 and Comparative Examples 1-7

[0045] Note: The paint film in Table 2 has a good silvery-white metallic luster (see Table 2). Figure 1 The metallic finish of the paint film is poor. Figure 2 The paint film has a non-metallic appearance. Figure 3 .

[0046] Table 2 shows that, compared to Example 1, Comparative Example 1 did not use 60% C9 petroleum resin solution, but only used high flash point alkyd resin. Therefore, the product of Comparative Example 1 had slower drying, poorer appearance, and poorer storage stability compared to Example 1. Comparative Example 2, compared to Example 1, did not use high flash point alkyd resin, but only used 60% C9 petroleum resin solution. Therefore, the product of Comparative Example 2 had significantly worse adhesion compared to Example 1. Comparative Example 3, compared to Example 1, used 60% C5 petroleum resin solution instead of 60% C9 petroleum resin solution. Therefore, the product of Comparative Example 3 had a longer drying time and poorer settling properties compared to Example 1. Comparative Examples 4, 5, 6, and 7, compared to Example 1, used drying agents, silicone leveling agents, silicone defoamers, and anti-settling agents. The products had poor paint film appearance after storage, and the products using silicone leveling agents and silicone defoamers had poor paint film appearance both before and after storage.

[0047] It can be seen that the coating prepared in the embodiments of the present invention has better storage stability and metallic appearance than the comparative example, and has a high flash point.

[0048] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high flash point alkyd aluminum powder paint, characterized in that, It comprises the following components by weight percentage: 20-25% high flash point alkyd resin, 35-40% C9 petroleum resin solution, 13-18% floating aluminum powder slurry, and 20-25% high flash point aromatic hydrocarbon solvent; wherein the C9 petroleum resin in the C9 petroleum resin solution accounts for 60% of the solution mass.

2. The high flash point alkyd aluminum powder paint according to claim 1, characterized in that, The solvent for the C9 petroleum resin solution is a high flash point aromatic hydrocarbon solvent.

3. A method for preparing a high flash point alkyd aluminum powder paint as described in claim 1, characterized in that, Includes the following steps: High flash point alkyd resin and C9 petroleum resin solution are mixed and dispersed at medium speed, then floating aluminum powder slurry is added and dispersed at medium speed. Finally, high flash point aromatic hydrocarbon solvent is added and mixed evenly. After the viscosity is tested and found to be up to standard, high flash point alkyd aluminum powder paint is obtained.

4. The method for preparing high flash point alkyd aluminum powder paint according to claim 3, characterized in that, The rotation speed for medium-speed dispersion is 600~800 r / min; the medium-speed dispersion time for mixing the high flash point alkyd resin and C9 petroleum resin solution is 20~30 min; the medium-speed dispersion time for adding floating aluminum powder slurry is 8~12 min.

5. The method for preparing high flash point alkyd aluminum powder paint according to claim 3, characterized in that, The viscosity requirement is met by taking a sample and measuring it with an ISO 6# cup, with a flow time of 20±4 seconds.

6. The method for preparing high flash point alkyd aluminum powder paint according to claim 3, characterized in that, The preparation of the C9 petroleum resin solution includes the following steps: placing a high flash point aromatic hydrocarbon solvent into a container with a dispersion disk for medium-speed dispersion, aligning it with the center of the dispersion disk, and slowly adding C9 petroleum resin for feeding. After feeding is completed, the stirring slurry and the surrounding area of ​​the container are rinsed with the high flash point aromatic hydrocarbon solvent, and then high-speed dispersion is carried out. Dispersion is stopped after the fineness test meets the standard.

7. The method for preparing high flash point alkyd aluminum powder paint according to claim 6, characterized in that, The diameter ratio of the dispersion disc to the container diameter is 0.4-0.6; the rotation speed of the medium-speed dispersion is 600-800 r / min, the rotation speed of the high-speed dispersion is 1800-2000 r / min, and the high-speed dispersion time is 20-30 min.

8. The method for preparing high flash point alkyd aluminum powder paint according to claim 6, characterized in that, The required fineness is ≤15μm.

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