High waterproof and high weather-resistant fluorocarbon paint and preparation method thereof

Abstract

The application relates to the paint technology field, and discloses a high-waterproof high-weather-resistant fluorocarbon paint and a preparation method thereof. Fluorocarbon resin, butyl acetate, a phosphorus-containing polymer, cashew phenol glycidyl ether, talcum powder, polysiloxane defoaming agent, propylene glycol, polyacrylate leveling agent and bentonite are added into a stirrer, mixed and stirred, and after 15-20 minutes of stirring, the mixture is placed at room temperature for 3-4 hours to obtain the high-waterproof high-weather-resistant fluorocarbon paint. The high-waterproof high-weather-resistant fluorocarbon paint has good waterproof, flame-retardant and weather-resistant effects.

Description

Technical Field

[0001] This application relates to the field of coating technology, and more specifically, to a highly waterproof and weather-resistant fluorocarbon paint and its preparation method. Background Technology

[0002] With the development of modern architecture and industry, the performance requirements for coatings are becoming increasingly stringent. In the fields of building exteriors, bridges, and metal structures, where long-term exposure to harsh environments such as ultraviolet radiation and acid rain can lead to problems like chalking, fading, and peeling, resulting in a shortened service life. For example, exterior wall coatings need to meet aging resistance requirements of over 15 years. This necessitates that coatings possess excellent waterproof and weather-resistant properties to protect the coated objects from moisture erosion.

[0003] Existing fluorocarbon paints mostly rely on traditional flame-retardant systems containing halogens, which easily release toxic gases during combustion and have limited flame-retardant efficiency. Alternatively, they primarily rely on the CF bonds of fluorocarbon resins to achieve hydrophobic effects, but are susceptible to corrosion from water and chemicals during long-term use, leading to the failure of the waterproof layer. Therefore, existing fluorocarbon paints often focus on a single performance characteristic, making it difficult to meet the needs of multiple scenarios. For example, Chinese invention patent application CN105885660A discloses a flame-retardant and environmentally friendly paint and its preparation method. This coating has flame-retardant properties and, when used for plastic coating, can slow down the damage to plastics during combustion, thus achieving a flame-retardant effect; however, its waterproof effect is not improved. Summary of the Invention

[0004] To address the problems mentioned in the background art, this application provides a highly waterproof and weather-resistant fluorocarbon paint and its preparation method.

[0005] This application provides a highly waterproof and weather-resistant fluorocarbon paint and its preparation method, employing the following technical solution:

[0006] A highly waterproof and weather-resistant fluorocarbon paint comprises the following components by weight: 45-65 parts by weight of fluorocarbon resin, 8-10 parts by weight of butyl acetate, 2-4 parts by weight of phosphorus-containing polymer, 1-2 parts by weight of cashew phenol glycidyl ether, 1-3 parts by weight of talc, 0.3-0.4 parts by weight of polysiloxane defoamer, 1-2 parts by weight of propylene glycol, 0.3-0.4 parts by weight of polyacrylate leveling agent, and 0.4-0.6 parts by weight of bentonite.

[0007] Preferably, the preparation method of the phosphorus-containing polymer is as follows:

[0008] S1. Add DOPO to dichloromethane, then place it in a magnetic stirrer with an ice-water mixture and stir. When the temperature reaches 1-2℃, add hydroxyethyl methacrylate and triethylamine, mix thoroughly, maintain 1-2℃, and continue to add carbon tetrachloride, controlling the temperature at 5-10℃, and continue the reaction for 1.5-2 hours. Then remove it and place it at room temperature to stir the reaction. After the reaction is complete, place it in a separatory funnel, add 2 mol / L hydrochloric acid to remove excess triethylamine, and wash several times with distilled water to remove triethylamine salt crystals. Dry with anhydrous magnesium sulfate to obtain intermediate 1.

[0009] S2. Add 3-hydroxy-1-adamantyl methacrylate and benzoyl chloride to N,N-dimethylformamide solvent, stir and mix, react at 90-110℃, distill under reduced pressure after the reaction is completed, wash and dry to obtain modified adamantane;

[0010] S3. Under an inert atmosphere, the modified adamantane, intermediate 1, methyl acrylate, and acrylamide are added to a reactor containing N,N-dimethylformamide solvent, stirred until homogeneous, and then azobisisobutyronitrile is added. The mixture is heated and reacted for 12-16 hours. After the reaction is completed, the mixture is distilled under reduced pressure, filtered, and washed to obtain the phosphorus-containing polymer.

[0011] In the above reaction process, the phosphorus-hydrogen bond of DOPO undergoes a dehydration condensation reaction with hydroxyethyl methacrylate, introducing an alkenyl group; the hydroxyl group in 3-hydroxy-1-adamantyl methacrylate and the acyl chloride in benzoyl chloride undergo an esterification reaction, introducing an alkenyl group, thereby obtaining modified adamantane; the modified adamantane, intermediate 1, methyl acrylate and acrylamide undergo a polymerization reaction to obtain a phosphorus-containing polymer.

[0012] Preferably, the ratio of DOPO, dichloromethane, hydroxyethyl methacrylate, triethylamine, and carbon tetrachloride in S1 is 17.21-17.29g. : 50-55mL:12.4-12.8g:9.5-9.7g:14.71-14.76g.

[0013] Preferably, the stirring reaction time at room temperature in S1 is 22-24 hours.

[0014] Preferably, the ratio of N,N-dimethylformamide, 3-hydroxy-1-adamantyl methacrylate, and benzoyl chloride in S2 is 30-45 mL: 2.33-2.42 g: 2.26-2.37 g.

[0015] Preferably, the reaction time in S2 is 4-7 hours.

[0016] Preferably, the reaction temperature in S3 is 95-102℃.

[0017] Preferably, the ratio of modified adamantane, intermediate 1, methyl acrylate, acrylamide, N,N-dimethylformamide, and azobisisobutyronitrile in S3 is 1.2-1.3g:0.85-1.14g:0.6-0.8g:1-1.2g:30-40mL:0.01-0.02g.

[0018] Preferably, the preparation method of the high waterproof and high weather-resistant fluorocarbon paint is as follows: fluorocarbon resin, butyl acetate, phosphorus-containing polymer, cashew phenol glycidyl ether, talc, polysiloxane defoamer, propylene glycol, polyacrylate leveling agent, and bentonite are added to a stirrer, mixed and stirred for 15-20 minutes, and then allowed to stand at room temperature for 3-4 hours to obtain the high waterproof and high weather-resistant fluorocarbon paint.

[0019] In summary, this application has the following beneficial effects:

[0020] 1. In this application, fluorocarbon resin, butyl acetate, phosphorus-containing polymer, cashew phenol glycidyl ether, talc, polysiloxane defoamer, propylene glycol, polyacrylate leveling agent, and bentonite are added to a mixer, mixed and stirred for 15-20 minutes, and then left to stand at room temperature for 3-4 hours to obtain a highly waterproof and weather-resistant fluorocarbon paint.

[0021] 2. Phosphorus in phosphorus-containing polymers has good flame-retardant properties. When burning, phosphorus generates highly dehydrating polyphosphoric acid and metaphosphoric acid. Since polyphosphoric acid and metaphosphoric acid are not easily volatilized, they can form a dense protective layer on the coating surface, thus achieving a flame-retardant effect. The benzene ring groups and adamantyl groups in phosphorus-containing polymers have good waterproof and hydrophobic effects, enhancing the water resistance of paints. During stirring, the hydroxyl groups in the phosphorus-containing polymer and the epoxy groups in cashew phenol glycidyl ether undergo ring-opening reactions, forming cross-links and a cross-linked network. Furthermore, the long chains of cashew phenol tightly intertwine with the fluorocarbon resin, making the network even denser and further improving the waterproof effect. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] The raw materials involved in the specific embodiments of this application are all analytical grade. Additionally:

[0024] DOPO: 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.

[0025] In each of the drying steps, the product is dried until the moisture content is less than 5%.

[0026] Polyacrylate leveling agent: low relative molecular mass (6000-20000) acrylate homopolymer or copolymer.

[0027] Fluorocarbon resin, model: ETERFLON-4122; specification: 200kg / drum.

[0028] The cashew phenol glycidyl ether used was prepared according to the method described in the literature "Preparation and Properties of Crosslinked Cashew Phenol-Based Waterborne Polyurethane" published in *Coatings Industry*, February 2017, Vol. 47, No. 2. 119.4 g of cashew phenol was added to a three-necked flask, heated to 95°C, and 0.12 g of ZnCl2 was added. Then, 50 mL of epichlorohydrin was added dropwise, and the reaction was allowed to proceed for 3 hours. Next, a sodium hydroxide aqueous solution with a mass concentration of 193 g / L was added dropwise, and the mixture was heated to 100°C and reacted for 3 hours. The solution product was transferred to a separatory funnel, extracted and washed with heated deionized water, and separated. Anhydrous sodium sulfate was added to the organic layer, and the mixture was dried to remove water. After filtration, the filtrate was distilled under reduced pressure to remove excess epichlorohydrin, yielding cashew phenol glycidyl ether.

[0029] Example 1

[0030] S1. Add 17.21g of DOPO to 50mL of dichloromethane, then place it in a magnetic stirrer with an ice-water mixture and stir. When the temperature reaches 1℃, add 12.4g of hydroxyethyl methacrylate and 9.5g of triethylamine, mix thoroughly, maintain at 1℃, and continue to add 14.71g of carbon tetrachloride. Control the temperature at 5℃ and continue to react for 1.5h. Then remove it and place it at room temperature and stir to react for 22h. After the reaction is completed, wash and dry to obtain intermediate 1.

[0031] S2. Add 2.33 g of 3-hydroxy-1-adamantyl methacrylate and 2.26 g of benzoyl chloride to 30 mL of N,N-dimethylformamide solvent, stir and mix, react at 90 °C for 4 h, distill under reduced pressure after the reaction, wash and dry to obtain modified adamantane;

[0032] S3. Under a nitrogen atmosphere, 1.2 g of modified adamantane, 0.85 g of intermediate 1, 0.6 g of methyl acrylate, and 1 g of acrylamide were added to a reactor containing 30 mL of N,N-dimethylformamide solvent. The mixture was stirred until homogeneous, and then 0.01 g of azobisisobutyronitrile was added. The mixture was heated at 95 °C for 12 h. After the reaction was completed, the mixture was distilled under reduced pressure, filtered, and washed to obtain a phosphorus-containing polymer.

[0033] S4. Add 45 parts by weight of fluorocarbon resin, 8 parts by weight of butyl acetate, 2 parts by weight of phosphorus-containing polymer, 1 part by weight of cashew phenol glycidyl ether, 1 part by weight of talc, 0.3 parts by weight of polysiloxane defoamer, 1 part by weight of propylene glycol, 0.3 parts by weight of polyacrylate leveling agent, and 0.4 parts by weight of bentonite to a mixer, mix and stir for 15 minutes, and then let stand at room temperature for 3 hours to obtain a highly waterproof and weather-resistant fluorocarbon paint.

[0034] Example 2

[0035] S1. Add 17.29 g of DOPO to 55 mL of dichloromethane, then place it in a magnetic stirrer with an ice-water mixture and stir. When the temperature reaches 2 °C, add 12.8 g of hydroxyethyl methacrylate and 9.7 g of triethylamine, mix thoroughly, maintain 2 °C, and continue to add 14.76 g of carbon tetrachloride. Control the temperature at 10 °C and continue to react for 2 h. Then remove it and place it at room temperature and stir for 24 h. After the reaction is completed, wash and dry to obtain intermediate 1.

[0036] S2. Add 2.42 g of 3-hydroxy-1-adamantyl methacrylate and 2.37 g of benzoyl chloride to 45 mL of N,N-dimethylformamide solvent, stir and mix, react at 110 °C for 7 h, distill under reduced pressure after the reaction, wash and dry to obtain modified adamantane;

[0037] S3. Under a nitrogen atmosphere, 1.3 g of modified adamantane, 1.14 g of intermediate 1, 0.8 g of methyl acrylate, and 1.2 g of acrylamide were added to a reactor containing 40 mL of N,N-dimethylformamide solvent. The mixture was stirred until homogeneous, and then 0.02 g of azobisisobutyronitrile was added. The mixture was heated at 102 °C for 16 h. After the reaction was completed, the mixture was distilled under reduced pressure, filtered, and washed to obtain a phosphorus-containing polymer.

[0038] S4. Add 65 parts by weight of fluorocarbon resin, 10 parts by weight of butyl acetate, 4 parts by weight of phosphorus-containing polymer, 2 parts by weight of cashew phenol glycidyl ether, 3 parts by weight of talc, 0.4 parts by weight of polysiloxane defoamer, 2 parts by weight of propylene glycol, 0.4 parts by weight of polyacrylate leveling agent, and 0.6 parts by weight of bentonite to a mixer, mix and stir for 20 minutes, and then let stand at room temperature for 3-4 hours to obtain a highly waterproof and weather-resistant fluorocarbon paint.

[0039] Example 3

[0040] S1. Add 17.24 g of DOPO to 52 mL of dichloromethane, then place it in a magnetic stirrer with an ice-water mixture and stir. When the temperature reaches 1 °C, add 12.6 g of hydroxyethyl methacrylate and 9.6 g of triethylamine, mix thoroughly, maintain 2 °C, and continue to add 14.73 g of carbon tetrachloride. Control the temperature at 7 °C and continue the reaction for 1.7 h. Then remove it and place it at room temperature and stir for 23 h. After the reaction is completed, wash and dry to obtain intermediate 1.

[0041] S2. Add 2.39 g of 3-hydroxy-1-adamantyl methacrylate and 2.32 g of benzoyl chloride to 40 mL of N,N-dimethylformamide solvent, stir and mix, react at 100 °C for 5 h, and after the reaction is completed, distill under reduced pressure, wash and dry to obtain modified adamantane;

[0042] S3. Under a nitrogen atmosphere, 1.25 g of modified adamantane, 0.96 g of intermediate 1, 0.7 g of methyl acrylate, and 1.1 g of acrylamide were added to a reactor containing 35 mL of N,N-dimethylformamide solvent. The mixture was stirred until homogeneous, and then 0.015 g of azobisisobutyronitrile was added. The mixture was heated at 100 °C for 14 h. After the heating was completed, the mixture was distilled under reduced pressure, filtered, and washed to obtain a phosphorus-containing polymer.

[0043] S4. Add 50 parts by weight of fluorocarbon resin, 9 parts by weight of butyl acetate, 3 parts by weight of phosphorus-containing polymer, 2 parts by weight of cashew phenol glycidyl ether, 2 parts by weight of talc, 0.35 parts by weight of polysiloxane defoamer, 2 parts by weight of propylene glycol, 0.3 parts by weight of polyacrylate leveling agent, and 0.5 parts by weight of bentonite to a mixer, mix and stir for 17 minutes, and then let stand at room temperature for 4 hours to obtain a highly waterproof and weather-resistant fluorocarbon paint.

[0044] Example 4

[0045] S1. Add 17.21g of DOPO to 50mL of dichloromethane, then place it in a magnetic stirrer with an ice-water mixture and stir. When the temperature reaches 1℃, add 12.4g of hydroxyethyl methacrylate and 9.5g of triethylamine, mix thoroughly, maintain 1℃, and continue to add 14.71g of carbon tetrachloride. Control the temperature at 5℃ and continue to react for 1.5h. Then remove it and place it at room temperature and stir to react for 22h. After the reaction is completed, wash and dry to obtain intermediate 1.

[0046] S2. Add 2.33 g of 3-hydroxy-1-adamantyl methacrylate and 2.26 g of benzoyl chloride to 30 mL of N,N-dimethylformamide solvent, stir and mix, react at 90 °C for 4 h, distill under reduced pressure after the reaction, wash and dry to obtain modified adamantane;

[0047] S3. Under a nitrogen atmosphere, 1.3 g of modified adamantane, 1.14 g of intermediate 1, 0.8 g of methyl acrylate, and 1.2 g of acrylamide were added to a reactor containing 40 mL of N,N-dimethylformamide solvent. The mixture was stirred until homogeneous, and then 0.01 g of azobisisobutyronitrile was added. The mixture was heated at 102 °C for 16 h. After the heating was completed, the mixture was distilled under reduced pressure, filtered, and washed to obtain a phosphorus-containing polymer.

[0048] S4. Add 50 parts by weight of fluorocarbon resin, 9 parts by weight of butyl acetate, 3 parts by weight of phosphorus-containing polymer, 2 parts by weight of cashew phenol glycidyl ether, 2 parts by weight of talc, 0.35 parts by weight of polysiloxane defoamer, 2 parts by weight of propylene glycol, 0.3 parts by weight of polyacrylate leveling agent, and 0.5 parts by weight of bentonite to a mixer, mix and stir for 17 minutes, and then let stand at room temperature for 4 hours to obtain a highly waterproof and weather-resistant fluorocarbon paint.

[0049] Example 5

[0050] S1. Add 17.29 g of DOPO to 55 mL of dichloromethane, then place it in a magnetic stirrer with an ice-water mixture and stir. When the temperature reaches 2 °C, add 12.8 g of hydroxyethyl methacrylate and 9.7 g of triethylamine, mix thoroughly, maintain 2 °C, and continue to add 14.76 g of carbon tetrachloride. Control the temperature at 10 °C and continue to react for 2 h. Then remove it and place it at room temperature and stir for 24 h. After the reaction is completed, wash and dry to obtain intermediate 1.

[0051] S2. Add 2.42 g of 3-hydroxy-1-adamantyl methacrylate and 2.37 g of benzoyl chloride to 45 mL of N,N-dimethylformamide solvent, stir and mix, react at 110 °C for 7 h, distill under reduced pressure after the reaction, wash and dry to obtain modified adamantane;

[0052] S3. Under a nitrogen atmosphere, 1.25 g of modified adamantane, 0.96 g of intermediate 1, 0.7 g of methyl acrylate, and 1.1 g of acrylamide were added to a reactor containing 35 mL of N,N-dimethylformamide solvent. The mixture was stirred until homogeneous, and then 0.02 g of azobisisobutyronitrile was added. The mixture was heated at 100 °C for 14 h. After the heating was completed, the mixture was distilled under reduced pressure, filtered, and washed to obtain a phosphorus-containing polymer.

[0053] S4. Add 45 parts by weight of fluorocarbon resin, 8 parts by weight of butyl acetate, 2 parts by weight of phosphorus-containing polymer, 1 part by weight of cashew phenol glycidyl ether, 1 part by weight of talc, 0.3 parts by weight of polysiloxane defoamer, 1 part by weight of propylene glycol, 0.3 parts by weight of polyacrylate leveling agent, and 0.4 parts by weight of bentonite to a mixer, mix and stir for 15 minutes, and then let stand at room temperature for 3 hours to obtain a highly waterproof and weather-resistant fluorocarbon paint.

[0054] Example 6

[0055] S1. Add 17.21g of DOPO to 50mL of dichloromethane, then place it in a magnetic stirrer with an ice-water mixture and stir. When the temperature reaches 1℃, add 12.4g of hydroxyethyl methacrylate and 9.5g of triethylamine, mix thoroughly, maintain at 1℃, and continue to add 14.71g of carbon tetrachloride. Control the temperature at 5℃ and continue to react for 1.5h. Then remove it and place it at room temperature and stir to react for 22h. After the reaction is completed, wash and dry to obtain intermediate 1.

[0056] S2. Add 2.42 g of 3-hydroxy-1-adamantyl methacrylate and 2.37 g of benzoyl chloride to 45 mL of N,N-dimethylformamide solvent, stir and mix, react at 110 °C for 7 h, distill under reduced pressure after the reaction, wash and dry to obtain modified adamantane;

[0057] S3. Under a nitrogen atmosphere, 1.3 g of modified adamantane, 1.14 g of intermediate 1, 0.8 g of methyl acrylate, and 1.2 g of acrylamide were added to a reactor containing 40 mL of N,N-dimethylformamide solvent. The mixture was stirred until homogeneous, and then 0.02 g of azobisisobutyronitrile was added. The mixture was heated at 102 °C for 16 h. After the reaction was completed, the mixture was distilled under reduced pressure, filtered, and washed to obtain a phosphorus-containing polymer.

[0058] S4. Add 65 parts by weight of fluorocarbon resin, 10 parts by weight of butyl acetate, 4 parts by weight of phosphorus-containing polymer, 2 parts by weight of cashew phenol glycidyl ether, 3 parts by weight of talc, 0.4 parts by weight of polysiloxane defoamer, 2 parts by weight of propylene glycol, 0.4 parts by weight of polyacrylate leveling agent, and 0.6 parts by weight of bentonite to a mixer, mix and stir for 20 minutes, and then let stand at room temperature for 3-4 hours to obtain a highly waterproof and weather-resistant fluorocarbon paint.

[0059] Comparative Example 1

[0060] The difference between this comparative example and Example 5 is that intermediate 1 is used instead of the phosphorus-containing polymer.

[0061] Comparative Example 2

[0062] The difference between this comparative example and Example 5 is that cashew phenol is used instead of cashew phenol glycidyl ether.

[0063] Performance testing

[0064] The primers prepared in Examples 1-5 and Comparative Examples 1-2 were applied to a cement board with a thickness of 1.1 mm. After drying, a corresponding topcoat of 0.4 mm was applied on top of the primer. The test was then conducted according to the method in GB / T 9266-2009 "Determination of Washability of Architectural Coatings" (the paint film will only be damaged after more than 2600 washes according to GB / T 9266-2009). The washing medium was deionized water. The results are shown in Table 1.

[0065] Table 1: Waterproofing test.

[0066]

[0067]

[0068] As shown in Table 1 above, the waterproof performance of the high-waterproof and high-weather-resistant fluorocarbon paints prepared in Examples 1-6 of this application is significantly better than that of Comparative Examples 1-2. The results from Comparative Example 1 show that using intermediate 1 instead of the phosphorus-containing polymer results in a decrease in the waterproof performance of the obtained high-waterproof and high-weather-resistant fluorocarbon paint. The results from Comparative Example 2 show that using cashew phenol instead of cashew phenol glycidyl ether results in a decrease in the waterproof performance of the obtained high-waterproof and high-weather-resistant fluorocarbon paint.

[0069] Artificial climate aging was tested in accordance with the JCT 2435-2018 standard.

[0070] Table 2: Weather resistance test.

[0071] project Artificial climate aging (xenon lamp, >720h) Example 1 No powdering, no yellowing Example 2 No powdering, no yellowing Example 3 No powdering, no yellowing Example 4 No powdering, no yellowing Example 5 No powdering, no yellowing Example 6 No powdering, no yellowing Comparative Example 1 No powdering, no yellowing Comparative Example 2 No powdering, no yellowing

[0072] As shown in Table 2 above, Examples 1-6 and Comparative Examples 1-2 of this application have good weather resistance.

[0073] The limiting oxygen index of the paint was tested according to GB / T2406.1-2008; the flame retardancy rating was tested according to UL-94.

[0074] Table 3: Flame retardancy test.

[0075] project Limiting oxygen index (%) Flame retardant rating Example 1 29.64 V-0 Example 32.57 V-0 Example 2 31.92 V-0 Example 3 29.38 V-0 Example 4 29.46 V-0 Example 5 30.52 V-0 Example 6 30.17 V-0 Comparative Example 1 30.85 V-0 Comparative Example 2 31.26 V-0

[0076] As shown in Table 3 above, Examples 1-6 and Comparative Examples 1-2 of this application have good flame retardant effects.

[0077] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A highly waterproof and weather-resistant fluorocarbon paint, characterized in that, It comprises the following components by weight: 45-65 parts by weight of fluorocarbon resin, 8-10 parts by weight of butyl acetate, 2-4 parts by weight of phosphorus-containing polymer, 1-2 parts by weight of cashew phenol glycidyl ether, 1-3 parts by weight of talc, 0.3-0.4 parts by weight of polysiloxane defoamer, 1-2 parts by weight of propylene glycol, 0.3-0.4 parts by weight of polyacrylate leveling agent, and 0.4-0.6 parts by weight of bentonite; The preparation method of the phosphorus-containing polymer is as follows: S1. Add DOPO to dichloromethane, then place it in an ice-water bath and stir. When the temperature reaches 1-2℃, add hydroxyethyl methacrylate and triethylamine, mix, and maintain 1-2℃. Continue to add carbon tetrachloride, control the temperature at 5-10℃, and continue the reaction for 1.5-2 hours. Then remove it and place it at room temperature to stir the reaction. After the reaction is completed, wash and dry to obtain intermediate 1. S2. Add 3-hydroxy-1-adamantyl methacrylate and benzoyl chloride to N,N-dimethylformamide solvent, stir and mix, react at 90-110℃, distill under reduced pressure after the reaction is completed, wash and dry to obtain modified adamantane; S3. Under an inert atmosphere, the modified adamantane, intermediate 1, methyl acrylate, and acrylamide are added to a reactor containing N,N-dimethylformamide solvent, stirred until homogeneous, and then azobisisobutyronitrile is added. The mixture is heated and reacted for 12-16 hours. After the reaction is completed, the mixture is distilled under reduced pressure, filtered, and washed to obtain the phosphorus-containing polymer.

2. The high waterproof and high weather-resistant fluorocarbon paint according to claim 1, characterized in that, The ratio of DOPO, dichloromethane, hydroxyethyl methacrylate, triethylamine, and carbon tetrachloride in S1 is 17.21-17.29g: 50-55mL: 12.4-12.8g: 9.5-9.7g: 14.71-14.76g.

3. The high waterproof and high weather-resistant fluorocarbon paint according to claim 1, characterized in that, The stirring reaction in S1 at room temperature lasts for 22-24 hours.

4. The high waterproof and high weather-resistant fluorocarbon paint according to claim 1, characterized in that, The ratio of N,N-dimethylformamide, 3-hydroxy-1-adamantyl methacrylate, and benzoyl chloride in S2 is 30-45 mL: 2.33-2.42 g: 2.26-2.37 g.

5. The high waterproof and high weather-resistant fluorocarbon paint according to claim 1, characterized in that, The reaction time in S2 is 4-7 hours.

6. The high waterproof and high weather-resistant fluorocarbon paint according to claim 1, characterized in that, The reaction temperature in S3 is 95-102℃.

7. The high waterproof and high weather-resistant fluorocarbon paint according to claim 1, characterized in that, The ratio of modified adamantane, intermediate 1, methyl acrylate, acrylamide, N,N-dimethylformamide, and azobisisobutyronitrile in S3 is 1.2-1.3g:0.85-1.14g:0.6-0.8g:1-1.2g:30-40mL:0.01-0.02g.

8. A method for preparing a highly waterproof and highly weather-resistant fluorocarbon paint as described in any one of claims 1-7, characterized in that, The preparation method of the high waterproof and high weather-resistant fluorocarbon paint is as follows: fluorocarbon resin, butyl acetate, phosphorus-containing polymer, cashew phenol glycidyl ether, talc, polysiloxane defoamer, propylene glycol, polyacrylate leveling agent, and bentonite are added to a stirrer, mixed and stirred for 15-20 minutes, and then allowed to stand at room temperature for 3-4 hours to obtain the high waterproof and high weather-resistant fluorocarbon paint.

Images