A kind of persistent high-brightness anti-slip hot melt marking paint and preparation method

Abstract

The application provides a kind of persistent high-brightness anti-skid hot melt marking paint and preparation method, it is related to road marking paint technical field, it is by following component composition: high quality hydrogenation film-forming resin 15-30%, EVA elastic resin 2-5%, rutile titanium dioxide 2-12%, coated filler 35-45%, graded glass bead 25-40%, anti-cracking reinforcing fiber 0.3-1.2% and auxiliary agent 2-5%; the application is by using coarse particle size and fine particle size according to mass ratio 4:1 mixed graded glass bead, and the synergistic effect of compound anti-skid aggregate, coarse particle size glass bead forms protrusion on coating surface, provides high retroreflective efficiency, fine particle size glass bead fills gap, increases unit area reflective point density, compound anti-skid aggregate forms uniform micro rough structure, does not shield glass bead light reflecting surface, realizes the synchronous promotion of high light reflection and high anti-skid.

Description

Technical Field

[0001] This invention relates to the field of road marking paint technology, and in particular to a durable, high-brightness, anti-skid hot-melt marking paint and its preparation method. Background Technology

[0002] Hot-melt road marking paint has advantages such as fast drying, low cost, and convenient application, and is currently the mainstream material for road markings in my country. Existing research and development of hot-melt road marking paints mainly focuses on improving single or partial properties such as crack resistance, wear resistance, and enhanced reflectivity, while neglecting the synergistic optimization of the overall performance of the marking. Reflectivity and skid resistance are two key performance characteristics of road markings, and these two properties are interdependent in practical applications.

[0003] On the one hand, existing high-reflectivity hot-melt road marking paints often use a high content of fine-particle glass microspheres to ensure the retroreflective coefficient. These glass microspheres are not wear-resistant and are easily broken or detached under repeated pressure from vehicle tires, resulting in a low anti-skid value (BPN) for the markings. This makes vehicles prone to skidding in rainy or wet conditions, posing a safety hazard. On the other hand, existing high-anti-skid hot-melt road marking paints often add a large amount of coarse-particle inorganic fillers (such as corundum and quartz sand) to improve anti-skid performance. While these coarse particles can increase the surface roughness of the markings, they disrupt the uniform distribution of glass microspheres on the coating surface. A large number of coarse particles obscure the reflective surface of the glass microspheres, reducing the retroreflective coefficient of the markings and resulting in poor nighttime reflectivity.

[0004] Furthermore, traditional hot-melt road marking paints often use a single petroleum resin (such as C5 or C9 resin) as the film-forming material. Their film-forming properties, compatibility with fillers, and encapsulation of glass microspheres are insufficient, resulting in poor adhesion between the coating and the road surface. Anti-skid aggregates and glass microspheres are prone to detachment, further exacerbating the degradation of reflectivity and anti-skid performance, making it difficult to meet the performance requirements for long-term use (over 2 years) of road markings. Therefore, this invention proposes a durable, high-brightness, anti-skid hot-melt road marking paint and its preparation method to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a durable, high-brightness, anti-slip hot-melt road marking coating and its preparation method. By employing graded glass microspheres and compounded anti-slip aggregates in a synergistic effect, coarse-diameter glass microspheres form protrusions on the coating surface, providing high retroreflection efficiency, while fine-diameter glass microspheres fill the gaps, increasing the density of reflective points per unit area. The compounded anti-slip aggregates form a uniform micro-rough structure, achieving a simultaneous improvement in both high reflectivity and high anti-slip properties.

[0006] To achieve the objectives of this invention, the invention is implemented through the following technical solutions:

[0007] A durable, high-gloss, anti-slip hot-melt road marking paint, by weight percentage, comprises the following components: 15%–30% high-quality hydrogenated film-forming resin, 2%–5% EVA elastic resin, 2%–12% rutile titanium dioxide, 35%–45% coated filler, 25%–40% graded glass microspheres, 0.3%–1.2% crack-resistant reinforcing fiber, and 2%–5% additives, the sum of the weight percentages of all components being 100%.

[0008] in:

[0009] The high-quality hydrogenated film-forming resin is a mixture of rosin resin and hydrogenated C5 petroleum resin, and the EVA elastic resin is an ethylene-vinyl acetate copolymer, wherein the vinyl acetate content is 32% to 38%.

[0010] The coating filler is composed of heavy calcium carbonate and anti-slip aggregate;

[0011] The graded glass microspheres are sodium-calcium silicate glass microspheres with a sphericity ≥90% and a refractive index ≥1.7. The graded glass microspheres are composed of coarse-diameter glass microspheres and fine-diameter glass microspheres mixed at a mass ratio of 4:1.

[0012] A further improvement is that the anti-slip aggregate is a compound anti-slip aggregate, which is composed of diamond, silver corundum and glass sand in a mass ratio of 1.5:2:1.

[0013] A further improvement is that the coarse-sized glass microspheres in the graded glass microspheres have a particle size range of 300–850 μm. The fine-particle-size glass microspheres in the graded glass microspheres have a particle size range of 10⁶ to 300 nm. .

[0014] A further improvement is that the rutile titanium dioxide is rutile titanium dioxide with a surface coated with silicon and aluminum and treated with organic materials.

[0015] A further improvement is that the crack-resistant reinforcing fiber is a polypropylene fiber or a lignin fiber with a length of 2-6 mm.

[0016] A further improvement is that the additives include anti-settling agents, dispersants, UV aging inhibitors, leveling agents, and abrasion modifiers.

[0017] Further improvements include: the anti-settling agent is organic bentonite, polyethylene wax, or ultrafine silica; the dispersant is white oil; the leveling agent is an acrylic leveling agent or an organosilicon leveling agent; and the anti-UV aging agent is a benzophenone or benzotriazole UV absorber.

[0018] A further improvement is that the rosin resin and hydrogenated C5 petroleum resin are resins that meet the following technical requirements:

[0019] Softening point ≥100℃; Gardner color number (sample:toluene = 1:1) <5; after continuous holding at 200℃±10℃ for 4 hours, there was no obvious blackening, charring, or clumping; after heating for 4 hours, the Gardner color number <7; the acid value of rosin resin (calculated as potassium hydroxide) was 0.4~1.8mg / g, and the acid value of hydrogenated C5 petroleum resin was ≤40.0mg / g; melt viscosity at 200℃ Ash content ≤ 0.1%.

[0020] A method for preparing a durable, high-brightness, anti-slip hot-melt road marking paint includes the following steps:

[0021] Step 1: Weigh out the rutile titanium dioxide, coating filler, anti-settling agent and dispersant according to the formula, add them to a high-speed mixing tank, and stir at 1800-2000 rpm for 3-5 minutes to obtain the basic filler mixture.

[0022] Step 2: Add high-quality hydrogenated film-forming resin, EVA elastic resin and wear-resistant modifier to the basic filler mixture, and stir at 2000-2200 rpm for 2-4 minutes to obtain a film-forming wear-resistant mixture;

[0023] Step 3: Add crack-resistant reinforcing fibers, UV aging resistant agent and leveling agent to the film-forming wear-resistant mixture, and stir at 2200-2400 rpm for 3-5 minutes to obtain the reinforcing mixture;

[0024] Step 4: First, add fine-sized glass microspheres to the reinforcing mixture and stir at 2000-2200 rpm for 0.5-1.5 minutes. Then, add coarse-sized glass microspheres and stir at 1700-1900 rpm for 1.5-2.5 minutes. Once the mixture is homogeneous, the finished product is obtained.

[0025] Further improvements are made as follows: in step one, the stirring speed is 1800 rpm and the stirring time is 4 minutes; in step two, the stirring speed is 2100 rpm and the stirring time is 3 minutes; in step three, the stirring speed is 2300 rpm and the stirring time is 4 minutes; in step four, the fine-particle glass microspheres are stirred at 2100 rpm for 1 minute, and the coarse-particle glass microspheres are stirred at 1800 rpm for 2 minutes.

[0026] The beneficial effects of this invention are as follows:

[0027] This invention utilizes graded glass microspheres, which are a mixture of coarse and fine glass microspheres in a mass ratio of 4:1, in synergy with composite anti-slip aggregates in the coating filler. The coarse glass microspheres form protrusions on the coating surface, providing high retroreflection efficiency, while the fine glass microspheres fill the gaps, increasing the density of reflective points per unit area. The composite anti-slip aggregates form a uniform micro-rough structure without obstructing the reflective surface of the glass microspheres, thus achieving a simultaneous improvement in both high reflectivity and high anti-slip properties.

[0028] This invention utilizes a hot-melt film-forming resin system modified by compounding rosin resin, hydrogenated C5 petroleum resin, and EVA elastic resin. This system can provide strong coating and support for graded glass microspheres and compounded anti-slip aggregates. The addition of EVA elastic resin ensures the compressive strength of the coating while giving it good toughness, preventing low-temperature cracking. The wear-resistant modifier forms a protective layer on the coating surface, slowing down the wear of glass microspheres and compounded anti-slip aggregates.

[0029] The rutile titanium dioxide in the raw materials of this invention provides high whiteness and hiding power. The compounded anti-slip aggregate has good compatibility with the hot melt film-forming resin system and is not prone to peeling or sanding. The crack-resistant reinforcing fiber can improve the crack resistance of the coating, and the anti-UV aging agent can effectively delay the aging and fading of the coating.

[0030] In the preparation process of this invention, the materials can be uniformly coated with fillers and graded glass microspheres by mechanical stirring alone, with no solvent volatilization, low VOC content, and compliance with environmental protection requirements. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the arrangement of glass microspheres on the surface of the marking coating of the present invention;

[0032] Figure 2 This is a curve showing the change in wear resistance (thickness wear) of the marking coating of the present invention over time;

[0033] Figure 3 This is the anti-skid performance decay curve of the marking coating of the present invention;

[0034] Figure 4 This is a flowchart illustrating the preparation process of the durable, high-brightness, anti-slip hot-melt marking paint of this invention. Detailed Implementation

[0035] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0036] Example 1

[0037] according to Figure 1-4 As shown in the figure, this embodiment proposes a durable, high-brightness, anti-slip hot-melt road marking paint and its preparation method. The formula (by weight parts) is as follows:

[0038] 13 parts of high-quality hydrogenated film-forming resin (rosin resin to hydrogenated C5 petroleum resin mass ratio 1:1).

[0039] 3 parts EVA elastic resin (vinyl acetate content 35%); 5 parts rutile titanium dioxide;

[0040] 25 parts of coated filler (of which the compound anti-slip aggregate accounts for 40% of the total coated filler, and the compound anti-slip aggregate contains diamond:silver corundum:glass sand = 1.5:2:1).

[0041] 30 portions of graded glass microspheres (coarse-grained glass microspheres: fine-grained glass microspheres = 4:1).

[0042] 0.5 parts of crack-resistant reinforcing fiber (polypropylene fiber);

[0043] 2 parts of additives (0.5 parts anti-settling agent, 0.5 parts dispersant, 0.5 parts UV aging agent, 0.3 parts leveling agent, and 0.2 parts wear-resistant modifier).

[0044] Preparation process:

[0045] Step 1: Weigh out the rutile titanium dioxide, coating filler, anti-settling agent and dispersant according to the formula, add them to a high-speed mixing tank, and stir at 1800 rpm for 4 minutes to obtain the basic filler mixture.

[0046] Step 2: Add high-quality hydrogenated film-forming resin, EVA elastic resin and wear-resistant modifier to the basic filler mixture, and stir at 2100 rpm for 3 minutes to obtain a film-forming wear-resistant mixture.

[0047] Step 3: Add crack-resistant reinforcing fibers, UV aging resistant agent and leveling agent to the film-forming wear-resistant mixture, and stir at 2300 rpm for 4 minutes to obtain the reinforcing mixture;

[0048] Step 4: First, add fine-diameter glass microspheres to the reinforcing mixture and stir at 2100 rpm for 1 minute. Then, add coarse-diameter glass microspheres and stir at 1800 rpm for 2 minutes. After stirring evenly, the finished product is obtained.

[0049] Performance testing:

[0050] The initial retroreflection coefficient was measured using a retroreflection coefficient measuring instrument according to GB / T16311 and under the geometric conditions specified in the standard. ;

[0051] According to GB / T16311, a pendulum friction coefficient tester was used to release the pendulum on a wet marking surface and measure the initial anti-slip value BPN: 62.

[0052] The coating was rubbed according to GB / T1768 (Taber abrasion tester method) under specified load and speed, and the wear loss was 32mg.

[0053] According to JT / T280, the test plate was placed in a low-temperature chamber at -10℃±2℃ for 4 hours, then removed and left at room temperature for 4 hours, which constituted one cycle. After repeating 3 cycles, the test plate was observed with a 5x magnifying glass, and the conclusion was that the test plate had no cracks.

[0054] According to JT / T280, the test block was kept at a constant temperature of 60℃±2℃ for 4 hours, and then immediately taken out and tested for its compressive strength using a compressive strength testing machine. The compressive strength at 60℃ was found to be 3.2MPa.

[0055] After 1 year of use: Retroreflection coefficient Anti-skid value BPN56;

[0056] After 2 years of use: Retroreflection coefficient It has an anti-slip value of BPN47 and exhibits no peeling, cracking, or fading.

[0057] Example 2

[0058] according to Figure 1-4 As shown in the figure, this embodiment proposes a durable, high-brightness, anti-slip hot-melt road marking paint and its preparation method. The formula (by weight parts) is as follows:

[0059] 15 parts of high-quality hydrogenated film-forming resin (rosin resin to hydrogenated C5 petroleum resin mass ratio 1:1).

[0060] 4 parts of EVA elastic resin (vinyl acetate content 35%).

[0061] 8 parts of rutile titanium dioxide;

[0062] 35 parts of coated filler (of which the compound anti-slip aggregate accounts for 40% of the total coated filler, and the ratio of diamond:silver corundum:glass sand in the compound anti-slip aggregate is 1.5:2:1).

[0063] 40 portions of graded glass microspheres (coarse-grained glass microspheres: fine-grained glass microspheres = 4:1).

[0064] 0.8 parts of crack-resistant reinforcing fiber (polypropylene fiber);

[0065] 3 parts of additives (0.7 parts anti-settling agent, 0.7 parts dispersant, 0.7 parts UV aging agent, 0.5 parts leveling agent, and 0.4 parts wear-resistant modifier).

[0066] Preparation process: (same as Example 1)

[0067] Performance testing:

[0068] The initial retroreflection coefficient was measured using a retroreflection coefficient measuring instrument according to GB / T16311 and under the geometric conditions specified in the standard. ;

[0069] According to GB / T16311, a pendulum friction coefficient tester was used to release the pendulum on a wet marking surface and measure the initial anti-slip value BPN: 65.

[0070] The coating was rubbed according to GB / T1768 (Taber abrasion tester method) under specified load and speed, and the wear loss was 30mg.

[0071] According to JT / T280, the test plate was placed in a low-temperature chamber at -10℃±2℃ for 4 hours, then removed and left at room temperature for 4 hours, which constituted one cycle. After repeating 3 cycles, the test plate was observed with a 5x magnifying glass, and the conclusion was that the test plate had no cracks.

[0072] According to JT / T280, the test block was kept at a constant temperature of 60℃±2℃ for 4 hours, and then immediately taken out and tested for its compressive strength using a compressive strength testing machine. The compressive strength at 60℃ was found to be 3.5MPa.

[0073] After 1 year of use: Retroreflection coefficient Anti-skid value BPN58;

[0074] After 2 years of use: Retroreflection coefficient With a slip resistance value of BPN49, it exhibits no peeling, cracking, or fading.

[0075] Example 3

[0076] according to Figure 1-4 As shown in the figure, this embodiment proposes a durable, high-brightness, anti-slip hot-melt road marking paint and its preparation method. The formula (by weight parts) is as follows:

[0077] 19 parts of high-quality hydrogenated film-forming resin (rosin resin to hydrogenated C5 petroleum resin mass ratio 1:1).

[0078] 4.5 parts of EVA elastic resin (vinyl acetate content 35%).

[0079] 10 parts of rutile titanium dioxide;

[0080] 50 parts of coated filler (of which the compound anti-slip aggregate accounts for 40% of the total coated filler, and the ratio of diamond:silver corundum:glass sand in the compound anti-slip aggregate is 1.5:2:1).

[0081] 40 portions of graded glass microspheres (coarse-grained glass microspheres: fine-grained glass microspheres = 4:1).

[0082] 1.0 part of crack-resistant reinforcing fiber (polypropylene fiber);

[0083] 4.0 parts of additives (0.9 parts of anti-settling agent, 0.9 parts of dispersant, 0.9 parts of UV aging agent, 0.7 parts of leveling agent, and 0.6 parts of wear-resistant modifier).

[0084] Preparation process: (same as Example 1)

[0085] Performance testing:

[0086] The initial retroreflection coefficient was measured using a retroreflection coefficient measuring instrument according to GB / T16311 and under the geometric conditions specified in the standard. ;

[0087] The coating was rubbed according to GB / T1768 (Taber abrasion tester method) under specified load and speed, and the wear loss was 28mg.

[0088] According to JT / T280, the test plate was placed in a low-temperature chamber at -10℃±2℃ for 4 hours, then removed and left at room temperature for 4 hours, which constituted one cycle. After repeating 3 cycles, the test plate was observed with a 5x magnifying glass, and the conclusion was that the test plate had no cracks.

[0089] According to JT / T280, the test block was kept at a constant temperature of 60℃±2℃ for 4 hours, and then immediately taken out and tested for its compressive strength using a compressive strength testing machine. The compressive strength at 60℃ was found to be 3.8MPa.

[0090] According to GB / T16311, a pendulum friction coefficient tester was used to release the pendulum on a wet marking surface and measure the initial anti-slip value BPN: 69.

[0091] After 1 year of use: Retroreflection coefficient Anti-skid value BPN59;

[0092] After 2 years of use: Retroreflection coefficient With a slip resistance value of BPN51, it exhibits no peeling, cracking, or fading.

[0093] Based on the typical results of each embodiment, the physicochemical properties of the product were tested according to GB / T16311, and the results are shown in Table 1-3 below:

[0094] Table 1

[0095]

[0096] Table 2

[0097]

[0098] Table 3

[0099]

[0100] Comparative Example 1

[0101] The formulation and preparation method are basically the same as those in Example 2, except that single fine-sized glass microspheres of 250-500 mm are used. It replaces graded glass microspheres and does not contain any coating fillers with compound anti-slip aggregates.

[0102] Performance test results: Initial retroreflection coefficient However, the initial anti-skid value (BPN) was 45; after one year of use, the anti-skid value (BPN) dropped to 38, making the vehicle prone to skidding in rainy weather.

[0103] Comparative Example 2

[0104] The formulation and preparation method are basically the same as in Example 2, except that single coarse-sized glass microspheres of 500-800 mm are used. Replacement for graded glass microspheres.

[0105] Performance test results: Initial anti-slip value BPN 64, but initial retroreflection coefficient only... Poor nighttime reflectivity; after one year of use, the retroreflection coefficient decreased to This cannot meet the needs of nighttime vehicle recognition.

[0106] Comparative Example 3

[0107] The formulation and preparation method are basically the same as those in Example 2, except that the graded glass microspheres are added together with other fillers and stirred at a high speed of 2600 rpm.

[0108] Performance test results: A large number of glass microspheres broke, and the initial retroreflection coefficient decreased. The initial anti-slip value was BPN52, but after 6 months of use, a large number of glass microspheres fell off, and the retroreflection coefficient and anti-slip value rapidly decreased.

[0109] The test results of Examples 1-3 and Comparative Examples 1-3 show that the present invention successfully achieves a synergistic balance between reflectivity and anti-slip properties through graded glass microsphere compounding, synergistic coating filler (including compounded anti-slip aggregate), and targeted preparation process, and both properties are maintained for a long time. In contrast, single-size glass microspheres, lack of coating filler (including compounded anti-slip aggregate), or unreasonable preparation process will all lead to an inability to achieve both reflectivity and anti-slip properties, or rapid performance degradation.

[0110] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A durable, high-gloss, anti-slip hot-melt road marking paint, characterized in that, By mass percentage, it consists of the following components: 15%–30% high-quality hydrogenated film-forming resin, 2%–5% EVA elastic resin, 2%–12% rutile titanium dioxide, 35%–45% coated filler, 25%–40% graded glass microspheres, 0.3%–1.2% crack-resistant reinforcing fiber, and 2%–5% additives, with the sum of the mass percentages of all components being 100%. in: The high-quality hydrogenated film-forming resin is a mixture of rosin resin and hydrogenated C5 petroleum resin, and the EVA elastic resin is an ethylene-vinyl acetate copolymer, wherein the vinyl acetate content is 32% to 38%. The coating filler is composed of heavy calcium carbonate and anti-slip aggregate; The graded glass microspheres are sodium-calcium silicate glass microspheres with a sphericity ≥90% and a refractive index ≥1.

7. The graded glass microspheres are composed of coarse-diameter glass microspheres and fine-diameter glass microspheres mixed at a mass ratio of 4:

1.

2. The durable, high-gloss, anti-slip hot-melt road marking paint according to claim 1, characterized in that: The anti-slip aggregate is a compound anti-slip aggregate, which is composed of diamond, silver corundum and glass sand in a mass ratio of 1.5:2:

1.

3. The durable, high-gloss, anti-slip hot-melt road marking paint according to claim 2, characterized in that: The coarse-grained glass microspheres in the graded glass microspheres have a particle size range of 300–850 μm. The fine-particle-size glass microspheres in the graded glass microspheres have a particle size range of 10⁶ to 300 nm. .

4. The durable, high-gloss, anti-slip hot-melt road marking paint according to claim 1, characterized in that: The rutile titanium dioxide is rutile titanium dioxide whose surface has been coated with silicon and aluminum and treated with organic materials.

5. The durable, high-gloss, anti-slip hot-melt marking paint according to claim 1, characterized in that: The crack-resistant reinforcing fiber is a polypropylene fiber or a lignin fiber, with a length of 2-6 mm.

6. The durable, high-gloss, anti-slip hot-melt road marking paint according to claim 1, characterized in that: The additives include anti-settling agents, dispersants, UV aging inhibitors, leveling agents, and abrasion modifiers.

7. The durable, high-gloss, anti-slip hot-melt road marking paint according to claim 1, characterized in that: The anti-settling agent is organic bentonite, polyethylene wax, or ultrafine silica; the dispersant is white oil; the leveling agent is an acrylic leveling agent or an organosilicon leveling agent; and the anti-UV aging agent is a benzophenone or benzotriazole UV absorber.

8. The durable, high-gloss, anti-slip hot-melt marking paint according to claim 1, characterized in that: The rosin resin and hydrogenated C5 petroleum resin are resins that meet the following technical requirements: Softening point ≥100℃; Gardner color number (sample:toluene = 1:1) <5; after continuous holding at 200℃±10℃ for 4 hours, there was no obvious blackening, charring, or clumping; after heating for 4 hours, the Gardner color number <7; the acid value of rosin resin (calculated as potassium hydroxide) was 0.4~1.8mg / g, and the acid value of hydrogenated C5 petroleum resin was ≤40.0mg / g; melt viscosity at 200℃ Ash content ≤ 0.1%.

9. A method for preparing a durable, high-brightness, anti-slip hot-melt road marking paint as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Weigh out the rutile titanium dioxide, coating filler, anti-settling agent and dispersant according to the formula, add them to a high-speed mixing tank, and stir at 1800-2000 rpm for 3-5 minutes to obtain the basic filler mixture. Step 2: Add high-quality hydrogenated film-forming resin, EVA elastic resin and wear-resistant modifier to the basic filler mixture, and stir at 2000-2200 rpm for 2-4 minutes to obtain a film-forming wear-resistant mixture; Step 3: Add crack-resistant reinforcing fibers, UV aging resistant agent and leveling agent to the film-forming wear-resistant mixture, and stir at 2200-2400 rpm for 3-5 minutes to obtain the reinforcing mixture; Step 4: First, add fine-sized glass microspheres to the reinforcing mixture and stir at 2000-2200 rpm for 0.5-1.5 minutes. Then, add coarse-sized glass microspheres and stir at 1700-1900 rpm for 1.5-2.5 minutes. Once the mixture is homogeneous, the finished product is obtained.

10. The method for preparing a durable, high-brightness, anti-slip hot-melt marking paint according to claim 9, characterized in that: In step one, the stirring speed is 1800 rpm and the stirring time is 4 minutes; in step two, the stirring speed is 2100 rpm and the stirring time is 3 minutes; in step three, the stirring speed is 2300 rpm and the stirring time is 4 minutes; in step four, the fine-particle glass microspheres are stirred at 2100 rpm for 1 minute, and the coarse-particle glass microspheres are stirred at 1800 rpm for 2 minutes.

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