Preparation method and application of weather-resistant hydrophobic coating for road traffic landmark identification

Abstract

The invention relates to the technical field of coatings, and discloses a road traffic landmark marking weather-resistant hydrophobic coating preparation method and application thereof.The road traffic landmark marking weather-resistant hydrophobic coating preparation method comprises the steps that acrylic resin, talcum powder, 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, a butyl acetate dispersing agent BYK-P104, quaternary ammonium salt modified vanillin, a fluorine-containing auxiliary, glass beads and scarlet powder are added into a stirrer to be stirred, and a mixture is obtained; and finally, obtaining the weather-resistant hydrophobic coating for the road traffic ground sign. The weather-resistant hydrophobic coating for the road traffic ground sign has good flame-retardant, hydrophobic, weather-resistant and anti-skid effects.

Description

Technical Field

[0001] The present invention relates to the technical field of coatings, and in particular to a method for preparing a weather-resistant hydrophobic coating for road traffic landmark markings and applications thereof. Background Art

[0002] With the rapid development of the transportation industry, the importance of road safety facilities has become increasingly prominent. Road signs are an important part of ensuring driving safety, and the performance of their surface coatings directly affects the warning effect. Traditional road ground traffic sign coatings have the defects of poor weather resistance, non-flame retardancy, and non-hydrophobicity. When exposed to outdoor environments for a long time, they are prone to aging and fading. When exposed to water, their anti-skid performance is reduced, thereby reducing the visibility and use effect of ground traffic signs in wet and slippery conditions, and increasing the risk of traffic accidents. Therefore, how to avoid this phenomenon is the key to solving the problem. For example, the Chinese invention patent application with publication number CN113322004B discloses a hydrophobic weather-resistant coating and its preparation method and application, which has good weather resistance, but its flame retardant effect is not improved. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In view of the shortcomings of the existing technology, the present invention provides a method for preparing a weather-resistant hydrophobic coating for road traffic landmark signs and its application, which has good flame retardant, hydrophobic and weather-resistant effects.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a weather-resistant hydrophobic coating for road traffic landmark markings, comprising the following components by weight: 25-30 parts by weight of acrylic resin, 1-2 parts by weight of talc, 1-3 parts by weight of dodecyl alcohol ester, 1.5-2 parts by weight of butyl acetate, 0.5-0.8 parts by weight of dispersant BYK-P104, 2-4 parts by weight of quaternary ammonium salt-modified vanillin, 1-1.6 parts by weight of fluorine-containing additives, 3-6 parts by weight of glass microspheres, and 2-5 parts by weight of red powder.

[0007] Furthermore, the preparation method of the quaternary ammonium salt-modified vanillin is:

[0008] Step 1: Vanillin and triethylamine are added to ethyl acetate solvent to obtain solution A; 9.5-9.7 g of phenylphosphoryl dichloride is dissolved in 40-46 mL of ethyl acetate to obtain solution B; solution B is added dropwise to solution A at 0-2°C. After the addition is complete, the mixture is reacted at 55-60°C for 20-24 hours. After the reaction is completed, the mixture is filtered, and the filtrate is washed with saturated brine and concentrated to obtain intermediate 1;

[0009] Step 2: Under a nitrogen atmosphere, add intermediate 1 and 3-diethylaminopropylamine to anhydrous ethanol solvent, react at 50-55°C for 4-6 hours, and then perform rotary distillation to obtain intermediate 2;

[0010] Step 3: Add intermediate 2 and benzyl chloride to N,N-dimethylformamide solvent, stir and mix, react at 70-80°C for 5-6 hours, and then distill under reduced pressure, wash and dry to obtain quaternary ammonium salt-modified vanillin. The reaction process of quaternary ammonium salt-modified vanillin is as follows:

[0011]

[0012] Furthermore, the usage ratio of vanillin, triethylamine and ethyl acetate is 15.11-15.21 g:10.12-10.13 g:95-100 mL.

[0013] Furthermore, the usage ratio of the intermediate 1,3-diethylaminopropylamine and anhydrous ethanol is 8.41-8.53 g:4.21-4.33 g:50-55 mL.

[0014] Furthermore, the usage ratio of the N,N-dimethylformamide, intermediate 2, and benzyl chloride is 55-65 mL: 6.14-6.35 g: 5.11-5.4 g.

[0015] Furthermore, the preparation method of the fluorine-containing auxiliary agent is as follows: under a nitrogen atmosphere, 7.81-7.85 g of hexamethylene diisocyanate is added to a reactor containing 95-110 mL of xylene, the temperature is raised to 55-60 ° C, and then 0.01-0.02 g of catalyst is added thereto, 35.14-36.82 g of perfluorohexylethyl alcohol is added at a constant pressure, the reaction is carried out for 4-5 hours, and after the reaction is completed, the reaction is cooled to room temperature, the nitrogen is stopped, and the fluorine-containing auxiliary agent is obtained by filtration.

[0016] Furthermore, the catalyst is dibutyltin dilaurate.

[0017] Furthermore, the preparation method of the weather-resistant hydrophobic coating for road traffic landmark markings is: adding acrylic resin, talcum powder, dodecyl alcohol ester, butyl acetate dispersant BYK-P104, quaternary ammonium salt-modified vanillin, fluorine-containing additives, glass beads, and red powder into a blender, stirring at 20-30°C for 10-15 minutes, and then obtaining the weather-resistant hydrophobic coating for road traffic landmark markings.

[0018] Furthermore, the weather-resistant hydrophobic coating is used in road warnings.

[0019] (3) Beneficial technical effects

[0020] The invention prepares a weather-resistant hydrophobic coating for road traffic landmark marking by adding acrylic resin, talc, dodecyl alcohol ester, butyl acetate dispersant BYK-P104, quaternary ammonium salt-modified vanillin, fluorine-containing auxiliary agent, glass microbeads and red powder into a stirrer and stirring the mixture.

[0021] The bis-Schiff base structure in the quaternary ammonium salt-modified vanillin decomposes when heated or burned, producing non-combustible gases that dilute the concentration of combustible gases, reduce oxygen levels, and slow combustion, providing a flame-retardant effect. The phosphorus element in the vanillin produces acidic substances such as phosphoric acid and metaphosphoric acid when heated, which promote the dehydration of the coating into carbon. These acidic substances can also further polyphosphate and coat the coating surface, providing a flame-retardant effect. The numerous benzene ring groups in the quaternary ammonium salt-modified vanillin have a good hydrophobic effect, and the numerous fluorine groups and relatively long difluorocarbon chains contained in the fluorine-containing additive also have good hydrophobicity. The coating of the present invention has good weather resistance and provides a good warning effect on roads. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the H NMR spectrum of intermediate 1.

[0023] Figure 2 is the H NMR spectrum of intermediate 2.

[0024] Figure 3 This is the H NMR spectrum of quaternary ammonium salt-modified vanillin.

[0025] Figure 4 This is the hydrogen nuclear magnetic resonance spectrum of the fluorinated additive. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] Step 1: Add 15.11 g of vanillin and 10.12 g of triethylamine to 95 mL of ethyl acetate to obtain solution A; dissolve 9.5 g of phenylphosphoryl dichloride in 40 mL of ethyl acetate to obtain solution B; add solution B dropwise to solution A at 0°C. After the addition is complete, react at 55°C for 20 hours. After the reaction is completed, filter, wash the filtrate with saturated brine, and concentrate to obtain intermediate 1;

[0030] Step 2: Under nitrogen atmosphere, 8.41 g of intermediate 1 and 4.21 g of 3-diethylaminopropylamine were added to 50 mL of anhydrous ethanol solvent, and the mixture was reacted at 50°C for 4 h. After the reaction, rotary distillation was performed to obtain intermediate 2;

[0031] Step 3: Add 6.14 g of intermediate 2 and 5.11 g of benzyl chloride to 55 mL of N,N-dimethylformamide solvent, stir and mix, react at 70°C for 5 h, and then distill under reduced pressure, wash and dry to obtain quaternary ammonium salt-modified vanillin;

[0032] Step 4: Under a nitrogen atmosphere, 7.8 g of hexamethylene diisocyanate was added to a reactor containing 95 mL of xylene, and the temperature was raised to 55 ° C. Then, 0.01 g of dibutyltin dilaurate catalyst was added thereto, and 35.14 g of perfluorohexylethyl alcohol was added at a constant pressure. The reaction was allowed to proceed for 4 h. After the reaction was completed, the mixture was cooled to room temperature, the nitrogen was stopped, and the mixture was filtered to obtain a fluorine-containing auxiliary agent;

[0033] Step 5: Add 25 parts by weight of acrylic resin, 1 part by weight of talc, 1 part by weight of dodecyl alcohol ester, 1.5 parts by weight of butyl acetate, 0.5 parts by weight of dispersant BYK-P104, 2 parts by weight of quaternary ammonium salt-modified vanillin, 1 part by weight of fluorine-containing auxiliary agent, 3 parts by weight of glass beads, and 2 parts by weight of red powder into a blender, stir at 20°C for 10 minutes, and obtain a weather-resistant hydrophobic coating for road traffic landmarks.

[0034] Example 2

[0035] Step 1: Add 15.21 g of vanillin and 10.13 g of triethylamine to 100 mL of ethyl acetate solvent to obtain solution A; dissolve 9.7 g of phenylphosphoryl dichloride in 46 mL of ethyl acetate to obtain solution B; add solution B dropwise to solution A at 2°C. After the addition is complete, react at 60°C for 24 hours. After the reaction is completed, filter, wash the filtrate with saturated brine, and concentrate to obtain intermediate 1;

[0036] Step 2: Under nitrogen atmosphere, 8.53 g of intermediate 1 and 4.33 g of 3-diethylaminopropylamine were added to 55 mL of anhydrous ethanol solvent, and the mixture was reacted at 55 ° C for 6 h. After the reaction, rotary distillation was performed to obtain intermediate 2;

[0037] Step 3: Add 6.35 g of intermediate 2 and 5.4 g of benzyl chloride to 65 mL of N,N-dimethylformamide solvent, stir and mix, react at 80°C for 6 h, and then distill under reduced pressure, wash and dry to obtain quaternary ammonium salt-modified vanillin;

[0038] Step 4: Under a nitrogen atmosphere, 7.85 g of hexamethylene diisocyanate was added to a reactor containing 110 mL of xylene, and the temperature was raised to 60 ° C. Then, 0.02 g of dibutyltin dilaurate catalyst was added thereto, and 36.82 g of perfluorohexylethyl alcohol was added at a constant pressure. The reaction was allowed to proceed for 5 h. After the reaction was completed, the mixture was cooled to room temperature, the nitrogen was stopped, and the mixture was filtered to obtain a fluorine-containing auxiliary agent;

[0039] Step 5: Add 30 parts by weight of acrylic resin, 2 parts by weight of talc, 3 parts by weight of lauryl alcohol ester, 2 parts by weight of butyl acetate, 0.8 parts by weight of dispersant BYK-P104, 4 parts by weight of quaternary ammonium salt-modified vanillin, 1.6 parts by weight of fluorine-containing additives, 6 parts by weight of glass beads, and 5 parts by weight of red powder into a blender, stir at 30°C for 15 minutes, and obtain a weather-resistant hydrophobic coating for road traffic landmarks.

[0040] Example 3

[0041] Step 1: Add 15.16 g of vanillin and 10.12 g of triethylamine to 98 mL of ethyl acetate to obtain solution A; dissolve 9.6 g of phenylphosphoryl dichloride in 43 mL of ethyl acetate to obtain solution B; add solution B dropwise to solution A at 1°C. After the addition is complete, react at 58°C for 22 hours. After the reaction is complete, filter, wash the filtrate with saturated brine, and concentrate to obtain intermediate 1;

[0042] Step 2: Under nitrogen atmosphere, 8.47 g of intermediate 1 and 4.27 g of 3-diethylaminopropylamine were added to 53 mL of anhydrous ethanol solvent, and the mixture was reacted at 52°C for 5 h. After the reaction, rotary distillation was performed to obtain intermediate 2;

[0043] Step 3: Add 6.24 g of intermediate 2 and 5.26 g of benzyl chloride to 60 mL of N,N-dimethylformamide solvent, stir and mix, react at 75°C for 6 h, and then distill under reduced pressure, wash and dry to obtain quaternary ammonium salt-modified vanillin;

[0044] Step 4: Under a nitrogen atmosphere, 7.83 g of hexamethylene diisocyanate was added to a reactor containing 100 mL of xylene, the temperature was raised to 57 ° C, and then 0.015 g of dibutyltin dilaurate catalyst was added thereto, and 35.98 g of perfluorohexylethyl alcohol was added at a constant pressure. The reaction was allowed to react for 5 h. After the reaction was completed, the mixture was cooled to room temperature, the nitrogen was stopped, and the mixture was filtered to obtain a fluorine-containing auxiliary agent;

[0045] Step 5: Add 27 parts by weight of acrylic resin, 1.5 parts by weight of talc, 2 parts by weight of lauryl ester, 1.7 parts by weight of butyl acetate, 0.6 parts by weight of dispersant BYK-P104, 3 parts by weight of quaternary ammonium salt-modified vanillin, 1.3 parts by weight of fluorine-containing additives, 5 parts by weight of glass beads, and 3 parts by weight of red powder into a blender, stir at 25°C for 12 minutes, and obtain a weather-resistant hydrophobic coating for road traffic landmarks.

[0046] Example 4

[0047] Step 1: Add 15.11 g of vanillin and 10.12 g of triethylamine to 95 mL of ethyl acetate to obtain solution A; dissolve 9.5 g of phenylphosphoryl dichloride in 40 mL of ethyl acetate to obtain solution B; add solution B dropwise to solution A at 0°C. After the addition is complete, react at 55°C for 20 hours. After the reaction is completed, filter, wash the filtrate with saturated brine, and concentrate to obtain intermediate 1;

[0048] Step 2: Under nitrogen atmosphere, 8.41 g of intermediate 1 and 4.21 g of 3-diethylaminopropylamine were added to 50 mL of anhydrous ethanol solvent, and the mixture was reacted at 50°C for 4 h. After the reaction, rotary distillation was performed to obtain intermediate 2;

[0049] Step 3: Add 6.35 g of intermediate 2 and 5.4 g of benzyl chloride to 65 mL of N,N-dimethylformamide solvent, stir and mix, react at 80°C for 6 h, and then distill under reduced pressure, wash and dry to obtain quaternary ammonium salt-modified vanillin;

[0050] Step 4: Under a nitrogen atmosphere, 7.85 g of hexamethylene diisocyanate was added to a reactor containing 110 mL of xylene, and the temperature was raised to 60 ° C. Then, 0.02 g of dibutyltin dilaurate catalyst was added thereto, and 36.82 g of perfluorohexylethyl alcohol was added at a constant pressure. The reaction was allowed to proceed for 5 h. After the reaction was completed, the mixture was cooled to room temperature, the nitrogen was stopped, and the mixture was filtered to obtain a fluorine-containing auxiliary agent;

[0051] Step 5: Add 27 parts by weight of acrylic resin, 1.5 parts by weight of talc, 2 parts by weight of lauryl ester, 1.7 parts by weight of butyl acetate, 0.6 parts by weight of dispersant BYK-P104, 3 parts by weight of quaternary ammonium salt-modified vanillin, 1.3 parts by weight of fluorine-containing additives, 3 parts by weight of glass beads, and 4 parts by weight of red powder into a blender, stir at 25°C for 12 minutes, and obtain a weather-resistant hydrophobic coating for road traffic landmarks.

[0052] Example 5

[0053] Step 1: Add 15.21 g of vanillin and 10.13 g of triethylamine to 100 mL of ethyl acetate solvent to obtain solution A; dissolve 9.7 g of phenylphosphoryl dichloride in 46 mL of ethyl acetate to obtain solution B; add solution B dropwise to solution A at 2°C. After the addition is complete, react at 60°C for 24 hours. After the reaction is completed, filter, wash the filtrate with saturated brine, and concentrate to obtain intermediate 1;

[0054] Step 2: Under nitrogen atmosphere, 8.53 g of intermediate 1 and 4.33 g of 3-diethylaminopropylamine were added to 55 mL of anhydrous ethanol solvent, and the mixture was reacted at 55 ° C for 6 h. After the reaction, rotary distillation was performed to obtain intermediate 2;

[0055] Step 3: Add 6.24 g of intermediate 2 and 5.26 g of benzyl chloride to 60 mL of N,N-dimethylformamide solvent, stir and mix, react at 75°C for 6 h, and then distill under reduced pressure, wash and dry to obtain quaternary ammonium salt-modified vanillin;

[0056] Step 4: Under a nitrogen atmosphere, 7.83 g of hexamethylene diisocyanate was added to a reactor containing 100 mL of xylene, the temperature was raised to 57 ° C, and then 0.015 g of dibutyltin dilaurate catalyst was added thereto, and 35.98 g of perfluorohexylethyl alcohol was added at a constant pressure. The reaction was allowed to react for 5 h. After the reaction was completed, the mixture was cooled to room temperature, the nitrogen was stopped, and the mixture was filtered to obtain a fluorine-containing auxiliary agent;

[0057] Step 5: Add 25 parts by weight of acrylic resin, 1 part by weight of talc, 1 part by weight of dodecyl alcohol ester, 1.5 parts by weight of butyl acetate, 0.5 parts by weight of dispersant BYK-P104, 2 parts by weight of quaternary ammonium salt modified vanillin, 1 part by weight of fluorine-containing auxiliary agent, 4 parts by weight of glass beads, and 3 parts by weight of red powder into a blender, stir at 20°C for 10 minutes, and obtain a weather-resistant hydrophobic coating for road traffic landmarks.

[0058] Comparative Example 1

[0059] Compared with Example 5, this comparative example differs in that intermediate 2 is used instead of quaternary ammonium salt to modify vanillin.

[0060] Comparative Example 2

[0061] Compared with Example 5, this comparative example differs in that perfluorohexylethyl alcohol is used instead of the fluorine-containing auxiliary agent.

[0062] The water resistance of the paint film was tested with reference to GB / T1733-1993. The salt spray resistance test method was to place the test sample in a salt spray test chamber at a 25° angle and then spray it at a spray volume of 10%. After 168 hours, the surface of the sample was observed and the surface phenomena were recorded. Artificial aging tests were conducted in accordance with GB / T1865-2009 "Paints and varnishes - Artificial weathering and artificial radiation exposure to filtered xenon arc radiation", and the phenomena were recorded. The results are recorded in Table 1.

[0063] Table 1: Water and weather resistance tests.

[0064]

[0065]

[0066] As can be seen from Table 1, the weather-resistant hydrophobic coating for road traffic ground markings of the present invention has good hydrophobicity and weather resistance.

[0067] The limiting oxygen index of the coating was tested using an oxygen index meter, and the combustion level of the coating was tested using a horizontal and vertical combustion instrument. The test results are shown in Table 2.

[0068] Table 2: Flame retardancy test.

[0069] project Limiting oxygen index (%) Combustion level Example 1 31.44 V-0 Example 2 32.61 V-0 Example 3 32.15 V-0 Example 4 31.57 V-0 Example 5 30.62 V-0 Comparative Example 1 32.24 V-0 Comparative Example 2 31.59 V-0

[0070] It can be seen from Table 2 that the weather-resistant hydrophobic coating for road traffic ground markings of the present invention has a good flame retardant effect.

[0071] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

[0073] Those skilled in the art will appreciate that the foregoing descriptions are merely specific embodiments of the present invention, and not exhaustive. It should be noted that numerous variations and modifications are possible for those skilled in the art, and all such variations and modifications that do not exceed the scope of the claims should be considered within the scope of protection of the present invention.

Claims

1. A weather-resistant hydrophobic coating for road traffic landmark marking, characterized in that: The invention comprises the following components by weight: 25-30 parts by weight of acrylic resin, 1-2 parts by weight of talc, 1-3 parts by weight of dodecyl alcohol ester, 1.5-2 parts by weight of butyl acetate, 0.5-0.8 parts by weight of dispersant BYK-P104, 2-4 parts by weight of quaternary ammonium salt modified vanillin, 1-1.6 parts by weight of fluorine-containing auxiliary agent, 3-6 parts by weight of glass microbeads, and 2-5 parts by weight of red powder.

2. The road traffic landmark marking weather-resistant hydrophobic coating according to claim 1, characterized in that, The preparation method of the quaternary ammonium salt modified vanillin is as follows: Step 1: Vanillin and triethylamine are added to ethyl acetate solvent to obtain solution A; 9.5-9.7 g of phenylphosphoryl dichloride is dissolved in 40-46 mL of ethyl acetate to obtain solution B; solution B is added dropwise to solution A at 0-2°C. After the addition is complete, the mixture is reacted at 55-60°C for 20-24 hours. After the reaction is completed, the mixture is filtered, and the filtrate is washed with saturated brine and concentrated to obtain intermediate 1; Step 2: Under inert gas protection, add intermediate 1 and 3-diethylaminopropylamine to anhydrous ethanol solvent, react at 50-55°C for 4-6 hours, and then perform rotary distillation to obtain intermediate 2; Step 3: Add intermediate 2 and benzyl chloride to N,N-dimethylformamide solvent, stir and mix, react at 70-80°C for 5-6 hours, and then distill under reduced pressure, wash and dry to obtain quaternary ammonium salt-modified vanillin.

3. The road traffic landmark marking weather-resistant hydrophobic coating according to claim 2, characterized in that, The usage ratio of the vanillin, triethylamine and ethyl acetate is 15.11-15.21 g:10.12-10.13 g:95-100 mL.

4. The road traffic landmark marking weather-resistant hydrophobic coating according to claim 2, characterized in that, The usage ratio of the intermediate 1, 3-diethylaminopropylamine and anhydrous ethanol is 8.41-8.53 g:4.21-4.33 g:50-55 mL.

5. The road traffic landmark marking weather-resistant hydrophobic coating according to claim 2, characterized in that, The usage ratio of the N,N-dimethylformamide, intermediate 2, and benzyl chloride is 55-65 mL: 6.14-6.35 g: 5.11-5.4 g.

6. The weather-resistant hydrophobic coating for road traffic landmark marking according to claim 1, characterized in that: The preparation method of the fluorine-containing auxiliary agent comprises: adding 7.81-7.85 g of hexamethylene diisocyanate into a reactor filled with 95-110 mL of xylene under inert gas, heating the reaction mixture to 55-60° C., then continuously adding 0.01-0.02 g of a catalyst, adding 35.14-36.82 g of perfluorohexylethyl alcohol at a constant pressure, reacting for 4-5 hours, cooling the reaction mixture to room temperature after the reaction is completed, stopping the introduction of nitrogen, and filtering the reaction mixture to obtain the fluorine-containing auxiliary agent.

7. The weather-resistant hydrophobic coating for road traffic landmark marking according to claim 6, characterized in that: The catalyst is dibutyltin dilaurate.

8. A method for preparing a weather-resistant hydrophobic coating for road traffic landmark marking according to any one of claims 1 to 7, characterized in that: The preparation method of the weather-resistant hydrophobic coating for road traffic landmarks comprises the following steps: adding acrylic resin, talcum powder, dodecyl alcohol ester, butyl acetate dispersant BYK-P104, quaternary ammonium salt-modified vanillin, fluorine-containing additives, glass microbeads, and red powder into a blender, stirring at 20-30° C. for 10-15 minutes, and obtaining the weather-resistant hydrophobic coating for road traffic landmarks.

9. A method for preparing a weather-resistant hydrophobic coating for road traffic landmark marking according to any one of claims 1 to 8, characterized in that: Application of the weather-resistant hydrophobic coating in road warnings.

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