Anti-crack wear-resistant reflective enhanced hot-melt marking coating and preparation method thereof

Abstract

The invention discloses an anti-crack wear-resistant reflective enhanced hot-melt marking coating and a preparation method thereof. The marking coating comprises the following components: a film-forming substance, EVA (Ethylene Vinyl Acetate), titanium dioxide, glass beads, a filler, polyethylene wax, an anti-ultraviolet aging agent, anti-crack reinforced fibers, a wear-resistant reinforced material and white oil. The preparation method of the marking paint comprises the step of uniformly mixing the components to obtain the product. According to the anti-crack wear-resistant reflective enhanced hot-melt marking coating and the preparation method thereof, the problems that a hot-melt marking is cracked, is not wear-resistant, is not lasting in light reflection and the like are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of road marking paints, and in particular to a crack-resistant, wear-resistant, and reflective-enhanced hot-melt road marking paint and a preparation method thereof. Background Art

[0002] In the early days, thermoplastic road markings were usually applied manually using materials such as paint. This method was prone to damage and had poor durability. Currently, thermoplastic road markings have become one of the mainstream marking methods.

[0003] Thermoplastic road markings clearly define lane dividers, provide clear guidance and prompts for drivers, and enhance driver recognition and visual quality at night or in low-light conditions. Thermoplastic road markings are applied neatly and clearly, enhancing the overall image of urban roads. Due to these advantages, thermoplastic road markings are widely used on highways, national and provincial trunk roads, municipal roads, rural roads, and other applications.

[0004] Thermoplastic road marking has the advantages of high cost performance and mature technology. Thermoplastic road marking paint has a fast drying speed, thick coating and low cost. The components of thermoplastic road marking paint, such as C5 petroleum resin, rosin resin, EVA, heavy calcium powder, quartz sand, etc., are widely available in the market. Despite this, thermoplastic road marking paint still has a series of problems such as high brittleness at low temperatures in winter, softening at high temperatures in summer, easy cracking, and poor wear resistance.

[0005] CN114806319A discloses a cold-resistant, high-toughness hot-melt road marking paint. In addition to conventional components such as fillers, pigments, film-forming aids, plasticizers, and leveling agents, the paint also includes a binder material obtained by mixing and modifying a thermoplastic elastomer and / or a fibrous material with a binder resin. Furthermore, an expansion agent such as ammonium phosphate, ammonium polyphosphate, glycine, dicyandiamide, and urea is added. The key technology of this invention lies in the use of the expansion agent. However, the unstable quality of the expansion agent can lead to uneven quality of the road marking paint. The expansion agent can also affect the durability and wear resistance of the road marking paint, causing the marking to easily fade and wear, thereby reducing its service life.

[0006] CN104312251A discloses a method for preparing an energy-saving and environmentally friendly hot-melt road marking paint. The method comprises the following steps: 1) weighing 100-120 parts of heavy calcium carbonate powder, 125-130 parts of 200-mesh quartz sand, 3-4 parts of titanium dioxide, and 2.5-3.5 parts of PE wax in a mass ratio and stirring uniformly; 2) adding 30-25 parts of C5 resin, EVA resin, and epoxy resin to the materials in step 1) in a mass ratio of 7:2:1; 3) adding 3-6 parts of a composite leveling agent to the mixture in step 2) and stirring uniformly to obtain a mixture; 4) heating the mixture in step 3) for 3-6 minutes with continuous stirring until the temperature reaches 180°C-220°C, pouring the mixture after it transforms from a powder into a liquid, and cooling it at room temperature for 2-3 minutes to obtain the product. This road marking paint uses multiple resins and a composite leveling agent to improve the paint's compatibility. However, the small amount of resin used results in weak adhesion and poor wear resistance of the marking. Summary of the Invention

[0007] In response to the above problems, the present invention provides a crack-resistant, wear-resistant, and reflective-enhanced thermoplastic road marking paint and a preparation method thereof, aiming to solve the problems of cracking, wear resistance, and short-lasting reflectivity in thermoplastic road markings in the prior art.

[0008] The present invention adopts the following technical solutions to achieve the above purpose:

[0009] A crack-resistant, wear-resistant, reflective enhanced hot-melt road marking paint comprises the following components by weight: 10 to 30 parts of a film-forming substance, 1.5 to 4 parts of EVA, 2 to 10 parts of titanium dioxide, 20 to 50 parts of glass beads, 25 to 50 parts of a filler, 0.5 to 3 parts of polyethylene wax, 0.1 to 0.5 parts of an anti-ultraviolet aging agent, 0.2 to 1 parts of an anti-cracking reinforcing fiber, 0.5 to 2 parts of a wear-resistant reinforcing material, and 1 to 5 parts of white oil.

[0010] Preferably, the film-forming substance is one or both of terpene resin and hydrogenated C5 petroleum resin. When the film-forming substance is a mixture of terpene resin and hydrogenated C5 petroleum resin, the two can be mixed in any ratio.

[0011] Preferably, the terpene resin is a light yellow flaky solid with a color (iron-cobalt method) ≤ 4, an average molecular weight of 800-1200, and a softening point greater than 110°C; the hydrogenated C5 petroleum resin has a Gardner color of less than 1, a softening point of 100-110°C, and a melt viscosity (190°C, mPa.s) less than 250.

[0012] Preferably, the EVA has an ethyl acetate content greater than 30%, a melting point greater than 95° C., a tensile modulus greater than 80 MPa, and a tensile stress greater than 10 MPa, which improves the coating's flexibility, tensile resistance, and crack resistance.

[0013] Preferably, the titanium dioxide is rutile titanium dioxide with a TiO2 content of ≥95%, a rutile content of ≥98%, a tinting power (Reynolds index) of ≥1800, and a dispersibility (Hegman coefficient) of ≥6.

[0014] Preferably, the glass beads are high-brightness glass beads with a size of 250-700 μm, a refractive index of ≥1.9, and a circularity of ≥90%.

[0015] Preferably, the filler is one or both of heavy calcium powder and quartz sand. When the filler is a mixture of heavy calcium powder and quartz sand, the two can be mixed in any ratio.

[0016] Preferably, the calcium carbonate content of the heavy calcium powder is ≥96%, and the particle size is 300-400 mesh; the particle size of the quartz sand is 50-150 mesh.

[0017] Preferably, the anti-ultraviolet aging agent is UV-531, with a transmittance of ≥90% at 450nm, a transmittance of ≥95% at 50nm, and a maximum absorption wavelength range of 300-375nm.

[0018] Preferably, the anti-cracking reinforcement fiber is one or both of glass fiber and polypropylene fiber. When the anti-cracking reinforcement fiber is a mixture of glass fiber and polypropylene fiber, the two can be mixed in any ratio.

[0019] Preferably, the glass fiber has a density of 2.5 g / cm3, a diameter of 10-20 μm, can withstand high temperatures above 300°C, has a tensile strength of ≥1500 MPa, and an elongation at break greater than 3%; the polypropylene fiber has a tensile strength of ≥400 MPa and an elastic modulus of ≥3500 MPa.

[0020] Preferably, the wear-resistant reinforcing material is one or both of silicone resin and powdered nitrile butadiene rubber. When the wear-resistant reinforcing material is a mixture of silicone resin and powdered nitrile butadiene rubber, the two can be mixed in any ratio.

[0021] Preferably, the silicone resin has a silicon-oxygen active content of ≥30% and a Shore hardness of 50-70; the powdered nitrile rubber has a specific gravity of 0.85-0.95, a size of less than 0.1 mm, a Shore hardness of 40-90, and an acrylonitrile content of 31%-35%.

[0022] Preferably, the white oil has a chroma of ≤1.0, a kinematic viscosity at 40°C of 40-60 mm2 / s, a kinematic viscosity at 100°C of 5-10 mm2 / s, and a flash point of 200-220°C.

[0023] A method for preparing a crack-resistant, wear-resistant, and reflective enhanced hot-melt road marking paint comprises the following steps:

[0024] Step 1: Weigh titanium dioxide, glass beads, filler, polyethylene wax and white oil by weight, put them into a stirring tank, and stir them at a speed of 1800-2200 rpm for 2-5 minutes;

[0025] Step 2: uniformly adding the film-forming material, EVA and wear-resistant reinforcing material weighed in prescribed parts by weight into the stirring tank, and stirring at a speed of 2300-2700 rpm for 2-3 minutes;

[0026] Step 3: Weigh the anti-ultraviolet aging agent and the anti-cracking reinforcing fiber according to the specified weight parts and continue to evenly add them into the stirring tank. Stir at a speed of 2400-2600 rpm for 4-6 minutes. Stir evenly to obtain the anti-cracking, wear-resistant, reflective enhanced hot-melt road marking paint.

[0027] The beneficial effects of the present invention are:

[0028] 1. The crack-resistant, wear-resistant, and reflective enhanced hot-melt road marking paint provided by the present invention is compounded with terpene resin and hydrogenated C5 petroleum resin. The terpene resin can enhance heat resistance, bonding ability, and improve ductility. The hydrogenated C5 petroleum resin has excellent compatibility, weather resistance, and viscosity-increasing effects in a system using EVA hot melt adhesive, thereby increasing the mixing and bonding effects of the paint and improving the adhesion between the paint and the road surface.

[0029] 2. The present invention uses rutile titanium dioxide with a rutile content of ≥98%, which has good hiding power and whiteness. When used in combination with high-brightness glass beads with a refractive index of not less than 1.9 and a roundness of ≥90%, it can significantly improve the glossiness of the marking, enhance the reflection effect, and ensure that the brightness factor reaches above 0.9.

[0030] 3. This invention uses UV-531, an anti-UV aging agent, to reduce UV damage to markings, effectively preventing color change or fading caused by UV exposure, enhancing weather resistance and extending service life. Furthermore, UV-531 exhibits excellent thermal stability and compatibility, and mixes easily into the coating.

[0031] 4. This invention utilizes crack-resistant reinforcing fibers: Glass fiber exhibits strong deformation tolerance, high strength, and rigidity, enabling thermoplastic markings to maintain their shape and integrity when subjected to tensile forces, making them less susceptible to breakage or deformation. Polypropylene fiber is slightly inferior to glass fiber in strength and hardness, but it is softer, more elastic, and more ductile. This allows thermoplastic markings to more easily adapt to varying road surface deformations, reducing the risk of breakage during use.

[0032] 5. This invention utilizes wear-resistant reinforcing materials: silicone resin, due to its silicon bonds and dense molecular arrangement, possesses high density and hardness, thereby improving the wear resistance of the marking. Furthermore, silicone resin forms a hydrophobic layer on the marking surface, enhancing its stain resistance. Powdered nitrile rubber forms a soft, wear-resistant surface layer in hot-melt markings, reducing wear and improving the marking's hardness, elasticity, and aging resistance. Furthermore, powdered nitrile rubber exhibits excellent chemical stability and resistance to chemical corrosion, thereby enhancing the wear resistance and extending the service life of the hot-melt marking. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below through specific examples. It should be understood that the specific examples described herein are merely illustrative of the present invention and are not intended to limit the present invention. The following terpene resin was purchased from Guangzhou Linli New Materials Co., Ltd., hydrogenated C5 petroleum resin was purchased from Shenzhen Jitian Chemical Co., Ltd., EVA was purchased from Shanghai Hongwei Plastics Co., Ltd., titanium dioxide was purchased from Fuwanda Titanium (Shanghai) Co., Ltd., glass beads were purchased from Hebei Oupo New Energy Technology Co., Ltd., heavy calcium powder was purchased from Lianyungang Guansu Industrial Co., Ltd., quartz sand was purchased from Shitouyuan Building Materials Store in Nanhai District, Foshan City, polyethylene wax was purchased from Beijing Jiedanliang Science and Trade Co., Ltd., anti-UV aging agent was purchased from Changzhou Youfeng Chemical Co., Ltd., glass fiber was purchased from Lingshou County Taizhen Mineral Products Processing Plant, polypropylene fiber was purchased from Huimin County Taili Chemical Fiber Products Co., Ltd., silicone resin was purchased from Shanghai Xingan Industrial Co., Ltd., powdered nitrile rubber was purchased from Guangdong Yuemei Chemical Co., Ltd., and white oil was purchased from Zibo Xinjiu Rubber Additive Co., Ltd. All other raw materials were commercially available.

[0034] Example 1

[0035] A crack-resistant, wear-resistant, and reflective reinforced hot-melt road marking paint was obtained by thoroughly mixing 15 parts of a film-forming substance, 1.5 parts of EVA, 4 parts of titanium dioxide, 20 parts of glass beads, 35 parts of a filler, 0.5 parts of polyethylene wax, 0.1 parts of an anti-UV aging agent, 0.2 parts of a crack-resistant reinforcing fiber, 0.5 parts of a wear-resistant reinforcing material, and 1 part of white oil according to the preparation method. The film-forming substance was hydrogenated C5 petroleum resin, the filler was heavy calcium carbonate powder, the crack-resistant reinforcing fiber was glass fiber, and the wear-resistant reinforcing material was powdered nitrile butadiene rubber. Appropriate samples were taken for testing of fluidity, wear resistance, crack resistance, and 60°C compressive strength. The results are shown in Table 1.

[0036] The crack-resistant, wear-resistant, reflective enhanced hot-melt road marking paint prepared in Example 1 was used for marking, and glass beads were sprinkled at a dosage of 0.6 kg / square meter. The initial reversibility coefficient of the marking line was 430 mcd / m 2lx, after 6 months, the reversal coefficient is 399mcd / m 2 lx, after 1 year, the reverse coefficient is 353mcd / m 2 lx, after 2 years the reflection coefficient is 216mcd / m 2 lx, and no marking defects such as falling off or cracking occurred after 2 years.

[0037] Comparative Example 1

[0038] The formula and preparation steps of this comparative example are basically the same as those of Example 1, except that no anti-ultraviolet aging agent is used. The subsequent test procedures and conditions are exactly the same as those of Example 1. The test results of the coating are shown in Table 1. The crack-resistant, wear-resistant, reflective enhanced hot-melt road marking paint prepared in Comparative Example 1 is used for road marking, and glass beads are sprinkled at a dosage of 0.6 kg / square meter. The initial reversibility coefficient of the marked line is 401 mcd / m 2 lx, after 6 months, the reversal coefficient is 327mcd / m 2 lx, after 1 year, the reflection coefficient is 235mcd / m 2 lx, after 2 years the reversal coefficient is 95 mcd / m 2 lx, the markings will fade severely after 2 years.

[0039] Example 2

[0040] A crack-resistant, wear-resistant, and reflective reinforced thermoplastic road marking paint was prepared by mixing 20 parts of a film-forming substance, 3 parts of EVA, 6 parts of titanium dioxide, 35 parts of glass beads, 37 parts of filler, 1.7 parts of polyethylene wax, 0.2 parts of an anti-UV aging agent, 0.3 parts of a crack-resistant reinforcing fiber, 1.2 parts of a wear-resistant reinforcing material, and 2 parts of white oil according to the preparation method. The mixture was thoroughly stirred and homogenized to produce the crack-resistant, wear-resistant, and reflective reinforced thermoplastic road marking paint. The film-forming substance was a mixture of terpene resin and hydrogenated C5 petroleum resin in a 1:2 weight ratio; the filler was a mixture of heavy calcium carbonate powder and quartz sand in a 2:1 weight ratio; the crack-resistant reinforcing fiber was polypropylene fiber; and the wear-resistant reinforcing material was a mixture of silicone resin and powdered nitrile rubber in a 1:1 weight ratio. Appropriate samples were collected and tested for fluidity, wear resistance, crack resistance, and 60°C compressive strength. The test results are shown in Table 1.

[0041] The crack-resistant, wear-resistant, reflective enhanced hot-melt road marking paint prepared in Example 2 was used for road marking, and glass beads were sprinkled at a dosage of 0.6 kg / square meter. The initial reversibility coefficient of the marked line was 453 mcd / m 2 lx, after 6 months the reversal coefficient is 414mcd / m 2 lx, the reverse coefficient after 1 year is 372mcd / m 2 lx, after 2 years the reflection coefficient is 243mcd / m 2 lx, and no marking defects such as falling off or cracking occurred after 2 years.

[0042] Comparative Example 2

[0043] The formula and preparation steps of this comparative example are basically the same as those of Example 2, except that the crack-resistant reinforcing fiber is not used. The subsequent test procedures and conditions are exactly the same as those of Example 2. The test results of the coating are shown in Table 1. The crack-resistant, wear-resistant, reflective reinforced hot-melt road marking paint prepared in Comparative Example 2 was used for marking, and glass beads were sprinkled at a dosage of 0.6 kg / m2. The initial reversal coefficient of the marking line was 433 mcd / m 2 lx, after 6 months, the reversal coefficient is 404mcd / m 2 lx, the reverse coefficient after 1 year is 361mcd / m 2 lx, after 2 years, the reversal coefficient is 222mcd / m 2 lx, cracking of markings occurred after 2 years.

[0044] Example 3

[0045] 25 parts of a film-forming substance, 4 parts of EVA, 10 parts of titanium dioxide, 40 parts of glass beads, 45 parts of a filler, 2 parts of polyethylene wax, 0.3 parts of an anti-UV aging agent, 0.6 parts of a crack-resistant reinforcing fiber, 1.2 parts of a wear-resistant reinforcing material, and 2.5 parts of white oil were thoroughly stirred according to the preparation method to produce a crack-resistant, wear-resistant, and reflective reinforced thermoplastic road marking paint. The film-forming substance is a 1:1 mixture of terpene resin and hydrogenated C5 petroleum resin; the filler is a 1:1 mixture of heavy calcium carbonate powder and quartz sand; the crack-resistant reinforcing fiber is a 1:1 mixture of glass fiber and polypropylene fiber; and the wear-resistant reinforcing material is a 1:1 mixture of silicone resin and powdered nitrile rubber. Appropriate samples were collected and tested for fluidity, wear resistance, crack resistance, and 60°C compressive strength. The test results are shown in Table 1.

[0046] The crack-resistant, wear-resistant, reflective enhanced hot-melt road marking paint prepared in Example 3 was used for marking, and glass beads were sprinkled at a dosage of 0.6 kg / square meter. The initial reversibility coefficient of the marking line was 439 mcd / m 2 lx, after 6 months, the reversal coefficient is 394mcd / m 2 lx, the reverse coefficient after 1 year is 352mcd / m 2 lx, after 2 years the reflection coefficient is 234mcd / m 2 lx, and no marking defects such as falling off or cracking occurred after 2 years.

[0047] Comparative Example 3

[0048] The formula and preparation steps of this comparative example are basically the same as those of Example 3, except that no wear-resistant reinforcing material is used. The subsequent test procedures and conditions are exactly the same as those of Example 3. The test results of the coating are shown in Table 1. The crack-resistant, wear-resistant, reflective reinforced hot-melt road marking paint prepared in Comparative Example 3 is used for marking, and glass beads are sprinkled at a dosage of 0.6 kg / square meter. The initial reversal coefficient of the marking line is 409 mcd / m 2 lx, after 6 months, the reflection coefficient is 355mcd / m 2 lx, after 1 year, the reverse coefficient is 322mcd / m 2 lx, after 2 years the reflection coefficient is 206mcd / m 2 lx, markings fall off after 2 years.

[0049] Table 1 Experimental results of examples and comparative examples

[0050] A comparison of Example 1 and Comparative Example 1 shows that the addition of UV-531 anti-UV aging agent can reduce UV damage to road markings, effectively preventing color change or fading caused by UV exposure, enhancing weather resistance, and extending the service life of road markings. A comparison of Example 2 and Comparative Example 2 shows that the addition of crack-resistant reinforcing fibers can reduce the risk of cracking during use of road marking paint. A comparison of Example 3 and Comparative Example 3 shows that the addition of wear-resistant reinforcing materials can improve the wear resistance of road markings, reduce wear, and extend their service life.

[0051] The preparation method of the above-mentioned crack-resistant, wear-resistant, reflective enhanced hot-melt road marking paint comprises the following steps:

[0052] Step 1: Weigh titanium dioxide, glass beads, filler, polyethylene wax and white oil by weight, put them into a stirring tank, and stir them at a speed of 1800-2200 rpm for 2-5 minutes;

[0053] Step 2: evenly add the film-forming material, EVA and wear-resistant reinforcing material weighed in prescribed parts by weight into the stirring tank, and stir at a speed of 2300-2700 rpm for 2-3 minutes;

[0054] Step 3: Weigh the anti-ultraviolet aging agent and anti-cracking reinforcing fiber according to the specified weight parts and continue to evenly add them into the stirring tank. Stir at a speed of 2400-2600 rpm for 4-6 minutes. Stir evenly to obtain the above-mentioned anti-cracking, wear-resistant, reflective enhanced hot-melt marking paint.

[0055] References throughout this specification to "some embodiments," "one embodiment," or "an embodiment" mean that a particular feature, structure, or property described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in some embodiments," "in one embodiment," or "in an embodiment" in various places throughout this specification do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or properties may be combined in any suitable manner in one or more embodiments.

[0056] Having thus described several aspects of at least one embodiment of the present invention, it will be appreciated that various alterations, modifications, and improvements will readily occur to those skilled in the art, and such alterations, modifications, and improvements are intended to be within the spirit and scope of the present invention.

Claims

1. A crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint, characterized in that: The composition includes the following components by weight: 10 to 30 parts of film-forming substance, 1.5 to 4 parts of EVA, 2 to 10 parts of titanium dioxide, 20 to 50 parts of glass beads, 25 to 50 parts of filler, 0.5 to 3 parts of polyethylene wax, 0.1 to 0.5 parts of anti-ultraviolet aging agent, 0.2 to 1 parts of anti-cracking reinforcing fiber, 0.5 to 2 parts of wear-resistant reinforcing material, and 1 to 5 parts of white oil.

2. The crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint according to claim 1, characterized in that: The film-forming substance is one or both of terpene resin and hydrogenated C5 petroleum resin; the terpene resin is a light yellow flaky solid with a color of ≤4, an average molecular weight of 800-1200, and a softening point greater than 110°C; the hydrogenated C5 petroleum resin has a Gardner color of less than 1, a softening point of 100-110°C, and a melt viscosity of less than 250.

3. The crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint according to claim 1, characterized in that: The EVA has an ethyl acetate content greater than 30%, a melting point greater than 95° C., a tensile modulus greater than 80 MPa, and a tensile stress greater than 10 MPa.

4. The crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint according to claim 1, characterized in that: The titanium dioxide is rutile titanium dioxide with a TiO2 content of ≥95%, a rutile content of ≥98%, a tinting power of ≥1800, and a dispersibility of ≥6; the glass beads are high-brightness glass beads with a size of 250~700μm, a refractive index of ≥1.9, and a roundness of ≥90%.

5. The crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint according to claim 1, characterized in that: The filler is one or both of heavy calcium powder and quartz sand; the calcium carbonate content of the heavy calcium powder is ≥96%, and the particle size is 300-400 mesh; the particle size of the quartz sand is 50-150 mesh.

6. The crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint according to claim 1, characterized in that: The anti-ultraviolet aging agent is UV-531, with a light transmittance of ≥90% at 450nm, a light transmittance of ≥95% at 50nm, and a maximum absorption wavelength range of 300-375nm.

7. The crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint according to claim 1, characterized in that: The anti-cracking reinforcing fiber is one or both of glass fiber and polypropylene fiber; the density of the glass fiber is 2.5g / cm 3 , diameter is 10~20μm, can withstand high temperature above 300℃, tensile strength ≥1500MPa, elongation at break is greater than 3%; the tensile strength of the polypropylene fiber is ≥400MPa, and the elastic modulus is ≥3500MPa.

8. The crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint according to claim 1, characterized in that: The wear-resistant reinforcing material is one or both of silicone resin and powdered nitrile rubber; the silicone resin has a silicon-oxygen active content of ≥30% and a Shore hardness of 50-70; the powdered nitrile rubber has a specific gravity of 0.85-0.95, a size of less than 0.1 mm, a Shore hardness of 40-90, and an acrylonitrile content of 31%-35%.

9. The crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint according to claim 1, characterized in that: The white oil has a chromaticity of ≤1.0 and a kinematic viscosity of 40-60 mm at 40°C. 2 / s, kinematic viscosity at 100℃ is 5~10mm 2 / s, flash point is 200~220℃.

10. A method for preparing a crack-resistant, wear-resistant, reflective and enhanced hot-melt road marking paint, characterized in that: The following steps are involved: Step 1: Weigh titanium dioxide, glass beads, filler, polyethylene wax and white oil by weight, put them into a stirring tank, and stir them at a speed of 1800-2200 rpm for 2-5 minutes; Step 2: uniformly adding the film-forming material, EVA and wear-resistant reinforcing material weighed in prescribed parts by weight into the stirring tank, and stirring at a speed of 2300-2700 rpm for 2-3 minutes; Step 3: Weigh the anti-ultraviolet aging agent and the anti-cracking reinforcing fiber according to the specified weight parts and continue to evenly add them into the stirring tank, stir at a speed of 2400-2600 rpm for 4-6 minutes, and stir evenly to obtain the anti-cracking, wear-resistant, reflective enhanced hot-melt road marking paint.

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