High-performance composite modified pavement marking coating

Abstract

The invention belongs to the technical field of road traffic safety facilities, and particularly relates to a high-performance composite modified pavement marking coating. The hot-melt marking modified material provided by the invention is used for improving a pavement marking coating, can remarkably improve the bonding performance of marking primer and glass beads and the surface stain removal performance, can improve the durability of a retroreflection coefficient of a road marking, prolongs the reflective life of the road marking, and has the advantages of low cost and high practicability. And finally, the driving safety can be ensured for a long time.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of road traffic safety facilities, and more particularly relates to a high-performance composite modified road surface marking paint. BACKGROUND

[0002] Road surface marking is a core visual facility for guiding traffic and ensuring driving safety. At present, hot-melt type road surface marking paint is most widely used in the market due to its convenient construction and rapid drying. The hot-melt type paint of the prior art usually takes C5 petroleum resin as a main film-forming material, supplemented by fillers, pigments and reflective glass beads, etc. However, during long-term service, the marking based on the traditional C5 petroleum resin system generally has the following technical defects: Insufficient durability and weather resistance: the molecular structure of C5 petroleum resin makes it weak in ultraviolet (UV) resistance, and it is prone to internal stress when experiencing seasonal high-low temperature cycles (thermal expansion and cold contraction). This leads to the coating being prone to photodegradation, aging and embrittlement, ultimately causing the marking to crack, peel and peel off, significantly shortening the effective service life of the marking.

[0003] Poor anti-fouling performance leading to visual degradation: the cured traditional hot-melt type paint has a high micro-surface porosity and is hydrophilic and lipophilic. Automobile exhaust, oil stains and dust in the road environment are easily adhered and penetrated, causing the marking surface to become dark due to pollution. This pollution not only reduces the daytime contrast between the marking and the road surface, but also obscures the reflective glass beads, causing a sharp decline in night-time retroreflective performance.

[0004] Poor adhesion and insufficient glass bead gripping force: the functionality of the marking depends on its adhesion to the road surface and the gripping force of the resin matrix on the glass beads. The C5 resin system has limited interfacial bonding force to the road surface material (especially cement concrete road surface). At the same time, the aging and embrittlement of the resin matrix reduces its "anchoring" ability to the glass beads. Under the long-term shearing of vehicles, the glass beads are easily detached prematurely, causing the marking to quickly lose its night-time reflective function.

[0005] Therefore, the existing hot-melt type marking has obvious technical bottlenecks in weather resistance, anti-fouling and adhesion, and it is difficult to meet the requirements of modern traffic for long-term marking and high visibility. Therefore, there is an urgent need in the art to develop a new type of hot-melt type road surface marking paint that can overcome all the above defects. SUMMARY

[0006] The purpose of the present application is to provide a high-performance composite modified road surface marking paint. The paint, through the synergistic effect of multiple raw materials, aims to significantly improve the cracking resistance, anti-pollution, wear resistance and long-term gripping ability of the glass beads, thereby prolonging the effective service life of the marking, to solve the problems existing in the prior art.

[0007] To achieve the above object, the present application provides the following scheme: One of the technical schemes of the present application: a hot melt marking modification material, by mass fraction, the raw materials include: Ethylene-vinyl acetate copolymer 15-25 parts, epoxy resin 10-20 parts, acrylic resin 10-20 parts, terpene resin 5-10 parts, polyvinylidene fluoride 5-10 parts, thermoplastic elastomer 5-10 parts, polyether modified polysiloxane 5-9 parts, silane coupling agent 3-8 parts, polyethylene wax 2-5 parts, epoxy soybean oil 2-4 parts, dimethyl silicone oil 2-4 parts, paraffin oil 1-3 parts, stearic acid 1-3 parts and terpineol 1-2 parts.

[0008] The second technical scheme of the present application: a preparation method of a hot melt marking modification material, the steps include: Mixing the above raw materials of the hot melt marking modification material uniformly, and the hot melt marking modification material is obtained.

[0009] The third technical scheme of the present application: the application of the above hot melt marking modification material in improving the performance of C5 petroleum resin system marking.

[0010] The fourth technical scheme of the present application: a high-performance composite modified road marking paint, the high-performance composite modified road marking paint is composed of a marking primer and an external spraying type modified glass microsphere; By mass fraction, the amount of the external spraying type modified glass microsphere is 10-18 parts; the raw materials of the marking primer include: C5 petroleum resin 12-16 parts, heavy calcium carbonate 30-35 parts, quartz sand 12-15 parts, internal mixing type modified glass microsphere 10-18 parts, titanium dioxide 4-6 parts and the above hot melt marking modification material 3-7 parts.

[0011] Further, the particle size of the heavy calcium carbonate is 600-1000 mesh.

[0012] Further, the particle size of the quartz sand is 20-100 mesh.

[0013] Further, the particle size of the internal mixing type modified glass microsphere and the external spraying type modified glass microsphere is 50-200 mesh.

[0014] Further, the particle size of the titanium dioxide is 200-400 mesh.

[0015] Further, the preparation steps of the internal mixing type modified glass microsphere or the external spraying type modified glass microsphere include: The glass microspheres are added into isopropyl alcohol, and then tetrabutyl titanate is added, and after stirring uniformly, drying is performed to obtain glass microspheres with grafted titanate chains on the surface, which are the internal mixing type modified glass microspheres or the external spraying type modified glass microspheres.

[0016] Optionally, the mass ratio of the glass beads and isopropyl alcohol is 1:1.

[0017] Optionally, the amount of the tetrabutyl titanate is 1-2wt% of the total mass of the glass beads and isopropyl alcohol.

[0018] Optionally, the drying temperature is 80℃, and the time is 2h.

[0019] Further, the preparation steps of the marking primer include: The C5 petroleum resin, heavy calcium carbonate, quartz sand, internal mixing type modified glass beads, titanium dioxide and hot melt marking modification material are mixed, heated and stirred uniformly, and then heat preserved to obtain the marking primer.

[0020] Optionally, the heating and stirring temperature is 150-220℃.

[0021] Optionally, the heat preservation temperature is 80℃, and the time is 15min.

[0022] The fifth technical scheme of the present application provides a use method of the high-performance composite modified pavement marking paint, and the steps include: The marking primer is heated and melted, and then applied to the pavement, and before curing, the external spraying type modified glass beads are uniformly scattered; the amount of the external spraying type glass beads is 0.3-0.5 kg / m 2 .

[0023] The present application has the following technical effects: The hot melt marking modification material can significantly improve the adhesion of the marking primer and the glass beads and the performance of removing surface stains, can improve the durability of the road marking retroreflective coefficient, prolong the reflective life of the road marking, and ultimately can long-term guarantee the safety of driving. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings: Figure 1 The flow chart for preparing the composite modified pavement marking by using the composite modified pavement marking paint of the present application. DETAILED DESCRIPTION

[0025] Now, various exemplary embodiments of the present application will be described in detail, and the detailed description should not be considered as a limitation on the present application, but should be understood as a more detailed description of certain aspects, characteristics and embodiments of the present application.

[0026] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. In addition, where a range of values is provided, it is understood that each intervening value, to the upper and lower limit of the range is also specifically disclosed. Each smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in that stated range is encompassed. The upper and lower limits of these smaller ranges can independently be included or excluded in the range, and are also encompassed by the application, subject to any specifically excluded limit in the stated range. Where the stated range includes one or both of the limits, ranges excluding either or both of those included limits are also included.

[0027] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Although preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present application. All documents mentioned herein are incorporated by reference to disclose and describe in full the methods and / or materials which are described herein. In case of conflict, the present specification will control.

[0028] Various modifications and changes can be made to the specific embodiments of the present application described herein without departing from the scope or spirit of the application. Other embodiments of the application will be apparent to those of ordinary skill in the art from the description and examples herein. The description and examples are illustrative of the application and are not intended to limit the scope of the application.

[0029] In this document, the terms "comprise", "comprising", "include", "including", "have", "having", "contain", "containing", and the like are open-ended, that is, they mean "including but not limited to".

[0030] Unless otherwise specified, the raw materials and reagents involved in the specific embodiments of the present application are commercially available, wherein the particle size of the heavy calcium carbonate is between 600-1000 mesh; the particle size of the quartz sand is between 20-100 mesh; the particle size of the internally mixed modified glass microbeads and the externally sprayed modified glass microbeads is between 50-200 mesh; the particle size of the titanium dioxide is between 200-400 mesh.

[0031] In some specific embodiments, the preparation steps of the internally mixed modified glass microbeads and the externally sprayed modified glass microbeads used include: The glass microbeads are added to isopropyl alcohol (mass ratio 1:1), and tetrabutyl titanate is added dropwise (the amount is 2.0wt% of the total mass of the glass microbeads and isopropyl alcohol), and after stirring uniformly, it is placed in an oven for drying at 80℃ for 2h, to obtain glass microbeads with grafted titanate chains on the surface, which are internally mixed modified glass microbeads or externally sprayed modified glass microbeads.

[0032] Unless otherwise specified, the room temperature and normal temperature involved in the specific embodiments of the present application both refer to 20-30℃.

[0033] Unless otherwise specified, the "parts" involved in the specific embodiments of the present application all refer to "mass parts".

[0034] It should be noted that the part not described in detail in the present application is the conventional operation means in the art, and is not the focus of the present application.

[0035] In some specific embodiments, the present application provides a preparation method of a high-performance composite modified road pavement marking paint, the steps comprising: S1, preparing 15-25 parts of ethylene-vinyl acetate copolymer, 10-20 parts of epoxy resin, 10-20 parts of acrylic resin, 5-10 parts of terpene resin, 5-10 parts of polyvinylidene fluoride, 5-10 parts of thermoplastic elastomer, 5-9 parts of polyether modified polysiloxane, 3-8 parts of silane coupling agent, 2-5 parts of polyethylene wax, 2-4 parts of epoxy soybean oil, 2-4 parts of dimethyl silicone oil, 1-3 parts of paraffin oil, 1-3 parts of stearic acid and 1-2 parts of terpineol, and mixing uniformly to obtain a hot melt marking modification material; S2, mixing 12-16 parts of C5 petroleum resin, 30-35 parts of heavy calcium carbonate, 12-15 parts of quartz sand, 10-18 parts of internally mixed modified glass microspheres, 4-6 parts of titanium dioxide and 3-7 parts of the above hot melt marking modification material, stirring uniformly at 220 DEG C, and then keeping at 80 DEG C for 15 min to obtain a marking primer; the marking primer and 10-18 parts of externally sprayed modified glass microspheres are stored separately, and a high-performance composite modified road pavement marking paint is obtained.

[0036] The compounding of epoxy resin and C5 petroleum resin can reduce the viscosity of the system, improve the leveling property and adhesion of the paint, the addition of acrylic resin can improve the gloss and ultraviolet aging resistance of the road marking paint, terpene resin is used for viscosity control (thickening), polyvinylidene fluoride can significantly improve the stain resistance of the road marking paint, the TPE after pyrolysis of the thermoplastic elastomer can be effectively crosslinked with the C5 petroleum resin, improving the weather resistance, fatigue resistance, adhesion and temperature resistance of the paint, polyethylene wax, dimethyl silicone oil and paraffin oil further improve the stain resistance of the paint, and terpineol is used to further improve the ultraviolet resistance of the coating.

[0037] In the present application, ethylene-vinyl acetate copolymer and epoxy soybean oil are introduced to jointly modify the traditional C5 petroleum resin system, wherein the ethylene-vinyl acetate copolymer as a high molecular polymer can effectively improve the flexibility and low-temperature impact resistance of the resin; the epoxy soybean oil has the dual functions of plasticizer and thermal stabilizer, and can prevent the resin from degrading during heating construction.

[0038] The polyethylene wax and dimethyl silicone oil are compounded, and during the cooling process after the melting construction of the paint, the polyethylene wax migrates to the surface of the coating to form a hard protective film, improving the wear resistance and physical stain resistance.

[0039] The titanate chains on the surface of the modified glass microbeads can act as a bridge, linking the glass microbeads on one end and the organic resin coating on the other end, thereby achieving firm interface bonding.

[0040] The following road marking paint was prepared using the same preparation method but different raw material ratios, and the specific ratios are shown in the contents of the examples and comparative examples.

[0041] Example 1 Hot-melt marking modification material: ethylene-vinyl acetate copolymer 20 parts, epoxy resin 16 parts, acrylic resin 16 parts, terpene resin 8 parts, polyvinylidene fluoride 8 parts, thermoplastic elastomer 8 parts, polyether-modified polysiloxane 7 parts, silane coupling agent 6 parts, polyethylene wax 3 parts, epoxy soybean oil 3 parts, dimethyl silicone oil 2 parts, paraffin oil 2 parts, stearic acid 1 part, and terpineol 1 part; Road marking paint: C5 petroleum resin 13 parts, heavy calcium carbonate 35 parts, quartz sand 15 parts, internally mixed modified glass microbeads 18 parts, externally sprayed modified glass microbeads 10 parts, titanium dioxide 6 parts, and the above hot-melt marking modification material 3 parts.

[0042] Example 2 Hot-melt marking modification material: ethylene-vinyl acetate copolymer 15 parts, epoxy resin 10 parts, acrylic resin 10 parts, terpene resin 7 parts, polyvinylidene fluoride 10 parts, thermoplastic elastomer 10 parts, polyether-modified polysiloxane 9 parts, silane coupling agent 8 parts, polyethylene wax 5 parts, epoxy soybean oil 4 parts, dimethyl silicone oil 4 parts, paraffin oil 3 parts, stearic acid 3 parts, and terpineol 2 parts; Road marking paint: C5 petroleum resin 15 parts, heavy calcium carbonate 30 parts, quartz sand 14 parts, internally mixed modified glass microbeads 12 parts, externally sprayed modified glass microbeads 18 parts, titanium dioxide 5 parts, and the above hot-melt marking modification material 3 parts.

[0043] Example 3 Hot-melt marking modification material: ethylene-vinyl acetate copolymer 20 parts, epoxy resin 15 parts, acrylic resin 15 parts, terpene resin 10 parts, polyvinylidene fluoride 7 parts, thermoplastic elastomer 7 parts, polyether-modified polysiloxane 7 parts, silane coupling agent 5 parts, polyethylene wax 3 parts, epoxy soybean oil 3 parts, dimethyl silicone oil 3 parts, paraffin oil 2 parts, stearic acid 2 parts, and terpineol 1 part; Road marking paint: C5 petroleum resin 12 parts, heavy calcium carbonate 33 parts, quartz sand 12 parts, internally mixed modified glass microbeads 16 parts, externally sprayed modified glass microbeads 15 parts, titanium dioxide 5 parts, and the above hot-melt marking modification material 7 parts.

[0044] Example 4 Hot melt marking modification material: ethylene-vinyl acetate copolymer 20 parts, epoxy resin 15 parts, acrylic resin 15 parts, terpene resin 5 parts, polyvinylidene fluoride 8 parts, thermoplastic elastomer 5 parts, polyether modified polysiloxane 6 parts, silane coupling agent 6 parts, polyethylene wax 4 parts, epoxy soybean oil 3 parts, dimethyl silicone oil 3 parts, paraffin oil 2 parts, stearic acid 2 parts, and terpineol 2 parts; Pavement marking paint: C5 petroleum resin 16 parts, heavy calcium carbonate 32 parts, quartz sand 13 parts, internally mixed modified glass microbeads 14 parts, externally sprayed modified glass microbeads 14 parts, titanium dioxide 4 parts, and the above hot melt marking modification material 7 parts.

[0045] Example 5 Hot melt marking modification material: ethylene-vinyl acetate copolymer 20 parts, epoxy resin 15 parts, acrylic resin 15 parts, terpene resin 5 parts, polyvinylidene fluoride 8 parts, thermoplastic elastomer 5 parts, polyether modified polysiloxane 6 parts, silane coupling agent 6 parts, polyethylene wax 4 parts, epoxy soybean oil 3 parts, dimethyl silicone oil 3 parts, paraffin oil 2 parts, stearic acid 2 parts, and terpineol 2 parts; Pavement marking paint: C5 petroleum resin 16 parts, heavy calcium carbonate 32 parts, quartz sand 13 parts, internally mixed modified glass microbeads 14 parts, externally sprayed modified glass microbeads 14 parts, titanium dioxide 4 parts, and the above hot melt marking modification material 7 parts.

[0046] Comparative Example 1 The difference from Example 5 is that glass microbeads (unmodified glass microbeads) are used instead of modified glass microbeads (internally mixed modified glass microbeads and externally sprayed modified glass microbeads) in the same amount, and the other preparation steps are the same as those of Example 5. Comparative Example 2 The difference from Example 5 is that polyethylene wax is replaced with dimethyl silicone oil in the same amount, and the other preparation steps are the same as those of Example 5.

[0047] Comparative Example 3 The difference from Example 5 is that dimethyl silicone oil is replaced with polyethylene wax in the same amount, and the other preparation steps are the same as those of Example 5.

[0048] Comparative Example 4 The difference from Example 5 is that epoxy soybean oil is replaced with ethylene-vinyl acetate copolymer in the same amount, and the other preparation steps are the same as those of Example 5.

[0049] Comparative Example 5 The difference from Example 5 is that ethylene-vinyl acetate copolymer is replaced with epoxy soybean oil in the same amount, and the other preparation steps are the same as those of Example 5.

[0050] Test Example Figure 1 Flow chart for preparing composite modified pavement marking paint using the composite modified pavement marking paint of the present application.

[0051] The pavement marking paint samples prepared in the above examples and comparative examples were tested for performance according to the "Pavement Marking Paint" (JT / T 280-2004) and industry standards.

[0052] The mixture in the pavement marking paint was heated and melted, and then applied to a sample plate. Before curing, the modified glass microbeads / glass microbeads of the external spraying type were uniformly sprinkled.

[0053] 1. Anti-pollution and self-cleaning test, and the results are shown in Table 1.

[0054] Contact angle measurement: A contact angle measuring instrument was used to measure the static contact angles of water droplets and oil droplets on the surfaces of the three paint sample plates, respectively, to evaluate their hydrophobic and oleophobic properties.

[0055] Anti-pollution test: The paint sample plate was taken and a standard pollution source (5% carbon black suspension) was uniformly applied to the surface of the sample plate. After standing for 2 hours, the sample plate was washed with clean water for 30 seconds. A color difference meter was used to measure the color difference values (ΔE) before and after pollution. The smaller the ΔE value, the stronger the anti-pollution and self-cleaning ability.

[0056] Table 1 As can be seen from the data in Table 1, the water contact angles of Examples 1-5 are much greater than 100°, and the oil contact angles are also significantly higher than those of the two comparative examples, showing excellent hydrophobic and oleophobic properties. The color difference value ΔE after pollution is less than 5, which is much lower than that of the comparative examples, indicating that the pollutants are difficult to adhere and can be easily removed. This fully confirms that the "physical hard film + chemical isolation layer" formed by the synergistic effect of polyethylene wax and dimethyl silicone oil can endow the surface of the marking with a self-cleaning function similar to the "lotus effect"; since the glass microbeads in Comparative Example 1 are not modified, the contact angle of the water droplets is reduced, and by replacing the polyethylene wax with an equal amount of dimethyl silicone oil in Comparative Example 2, the contact angle of the oil droplets is reduced due to the principle of "like dissolves like".

[0057] 2. Glass bead adhesion and wear resistance test, and the results are shown in Table 2, as follows: A pavement marking wear tester was used to test the three paint sample plates for rolling and wear. Before and after 300 times of wear, a retroreflective coefficient measuring instrument was used to test the nighttime retroreflective luminance coefficient (RL value) of the marking. The retention rate of the RL value was calculated by the following formula to evaluate the adhesion strength of the glass beads and the durability of the marking.

[0058] RL retention rate = (RL value after wear / RL value before wear) x 100%.

[0059] Table 2 From the data in Table 2, it can be seen that the retroreflective coefficient retention rate of Example 5 is as high as 83% or more after 300 times of rolling abrasion, which is mainly due to two points: one is that the titanate modified glass beads form a firm chemical bond with the resin matrix; the other is that the toughened resin matrix has stronger wrapping and grabbing capacity for glass beads, and is not easy to cause the beads to fall off due to brittle fracture.

[0060] 3. Physical property test: including softening point (℃) and compressive strength (MPa), according to the standard method of JT / T 280-2004, the results are shown in Table 3.

[0061] Table 3 From the data in Table 3, it can be seen that compared with other examples, in Comparative Example 2, the polyethylene wax is replaced with an equal amount of dimethyl silicone oil, resulting in a decrease in the softening point of the coating, in Comparative Example 4, the epoxy soybean oil is replaced with an equal amount of ethylene-vinyl acetate copolymer, which improves the crosslinking effect of the overall coating and increases its compressive strength, but its softening point is relatively reduced, in Comparative Example 5, the ethylene-vinyl acetate copolymer is replaced with an equal amount of epoxy soybean oil, which increases its softening point, but reduces its compressive strength.

[0062] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0063] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hot-melt marking modification material, characterized in that, By weight, the raw materials include: The composition includes 15-25 parts ethylene-vinyl acetate copolymer, 10-20 parts epoxy resin, 10-20 parts acrylic resin, 5-10 parts terpene resin, 5-10 parts polyvinylidene fluoride, 5-10 parts thermoplastic elastomer, 5-9 parts polyether-modified polysiloxane, 3-8 parts silane coupling agent, 2-5 parts polyethylene wax, 2-4 parts epoxidized soybean oil, 2-4 parts dimethyl silicone oil, 1-3 parts paraffin oil, 1-3 parts stearic acid, and 1-2 parts terpineol.

2. A method for preparing a hot-melt marking modification material, characterized in that the steps include... include: The raw materials of the hot-melt marking modification material according to claim 1 are mixed evenly to obtain the hot-melt marking modification material.

3. The application of the hot-melt marking modification material according to claim 1 in improving the performance of C5 petroleum resin marking system.

4. A high-performance composite modified road marking paint, characterized in that, The high-performance composite modified road marking paint is composed of a marking primer and externally sprayable modified glass microspheres; The amount of the externally sprayed modified glass microspheres is 10-18 parts by weight; The raw materials of the road marking primer include: 12-16 parts of C5 petroleum resin, 30-35 parts of heavy calcium carbonate, 12-15 parts of quartz sand, 10-18 parts of internally mixed modified glass microspheres, 4-6 parts of titanium dioxide, and 3-7 parts of the hot-melt road marking modifier as described in claim 1.

5. The high-performance composite modified road marking paint as described in claim 4, characterized in that, The particle size of the heavy calcium carbonate is 600-1000 mesh; And / or, the particle size of the quartz sand is 20-100 mesh; And / or, the particle size of the internally mixed modified glass microspheres and the externally sprayed modified glass microspheres is 50-200 mesh; And / or, the particle size of the titanium dioxide is 200-400 mesh.

6. The high-performance composite modified road marking paint as described in claim 4, characterized in that, The preparation steps of the internally mixed modified glass microspheres or externally sprayed modified glass microspheres include: Glass microspheres are added to isopropanol, followed by tetrabutyl titanate. After stirring evenly and drying, glass microspheres with surface grafted titanate chains are obtained, which are internally mixed modified glass microspheres or externally sprayed modified glass microspheres.

7. The high-performance composite modified road marking paint as described in claim 6, characterized in that, The mass ratio of the glass microspheres to isopropanol is 1:1; And / or, the amount of tetrabutyl titanate used is 1-2 wt% of the total mass of the glass microspheres and isopropanol; And / or, the drying temperature is 80°C and the time is 2 hours.

8. The high-performance composite modified road marking paint as described in claim 4, characterized in that, The preparation steps of the marking primer include: C5 petroleum resin, heavy calcium carbonate, quartz sand, internally mixed modified glass microspheres, titanium dioxide, and hot-melt marking modification material are mixed, heated and stirred evenly, and kept at a constant temperature to obtain the marking primer.

9. The high-performance composite modified road marking paint as described in claim 8, characterized in that, The heating and stirring temperature is 150-220℃; And / or, the insulation temperature is 80°C and the time is 15 minutes.

10. A method of using the high-performance composite modified road marking paint according to any one of claims 4-9, characterized in that the steps include... include: The road marking primer is heated and melted and then applied to the road surface. Before curing, the externally sprayed modified glass microspheres are evenly spread. The amount of the road marking primer used is 0.3-0.5 kg / m². 2 .

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