CN-122011920-A - High-visual wear-resistant anti-skid environment-friendly road marking paint and preparation method thereof

Abstract

The invention discloses a high-visual wear-resistant anti-skid environment-friendly road marking paint and a preparation method thereof. The coating comprises environment-friendly film-forming resin, white pigment filler, functional filler, reflective medium, reflective-anti-slip composite particles, auxiliary agent and water. The preparation method comprises the steps of firstly cleaning and drying the anti-skid aggregate core, coating a coupling agent to form an interface bonding layer, applying a reflecting medium to the surface of the anti-skid aggregate core before the anti-skid aggregate core is not completely solidified, enabling the reflecting medium to be partially embedded in the interface bonding layer, solidifying and screening the interface bonding layer to obtain the light-reflecting and anti-skid composite particles, uniformly mixing film-forming resin, auxiliary agent and water, adding pigment and filler for dispersion, and finally adding the reflecting medium and the light-reflecting and anti-skid composite particles for uniform mixing. The invention enables the marking to have high retroreflection performance, excellent skid resistance, wear resistance and low VOC emission through the synergistic effect of the reflecting-anti-skid composite particles and the double-particle-size reflecting medium, and is suitable for scenes such as expressways, urban roads, airport roads and the like.

Inventors

• FENG WENQIAN

Assignees

• 深圳博锐信息技术有限公司

Dates

Publication Date

20260512

Application Date

20260327

Claims (9)

1. 1. The preparation method of the high-visual wear-resistant anti-skid environment-friendly road marking paint is characterized by comprising the following steps of: step 1, cleaning and drying an anti-skid aggregate core, coating a coupling agent on the surface of the anti-skid aggregate core to form an interface bonding layer, and applying a reflective medium on the surface of the anti-skid aggregate core before the interface bonding layer is completely cured to enable the reflective medium to be partially embedded in the interface bonding layer; And 2, adding the environment-friendly film-forming resin, part of auxiliary agent and water into a stirrer, uniformly mixing, adding the white pigment filler, the functional filler and the auxiliary agent, uniformly dispersing, adding the reflective medium and the reflective-anti-slip composite particles, and uniformly mixing to obtain the high-visual wear-resistant anti-slip environment-friendly road marking paint.
2. 2. The preparation method of the high-visual wear-resistant anti-skid environment-friendly road marking paint is characterized by comprising, by weight, 18-35 parts of environment-friendly film-forming resin, 15-40 parts of white pigment filler, 5-25 parts of functional filler, 8-30 parts of reflective medium, 5-25 parts of reflective-anti-skid composite particles, 0.5-8 parts of auxiliary agent and 1-15 parts of water.
3. 3. The method for preparing the high-visual wear-resistant anti-skid environment-friendly road marking paint according to claim 1, wherein the anti-skid aggregate core in the step 1 is one or at least two selected from calcined ceramic sand, fused quartz sand, calcined bauxite sand, corundum sand and high-alumina ceramic particles.
4. 4. The method for preparing the high-visual wear-resistant anti-skid environment-friendly road marking paint according to claim 1, wherein the interface bonding layer in the step 1 contains one or at least two of silane coupling agent, titanate coupling agent, zirconate coupling agent, epoxy modified siloxane and polyurethane bonding phase.
5. 5. The method for preparing the high-visual wear-resistant anti-skid environment-friendly road marking paint is characterized in that the environment-friendly film-forming resin in the step 2 is any one of a hybrid system formed by aqueous polyurethane resin and aqueous epoxy resin, a hybrid system formed by aqueous acrylic resin and aqueous polyurethane resin and a crosslinking system formed by aqueous epoxy resin and aqueous amine curing agent.
6. 6. The method for preparing the high-visual wear-resistant anti-skid environment-friendly road marking paint according to claim 1, wherein the auxiliary agent in the step 2 comprises an interface accelerator and an anti-fouling auxiliary agent.
7. 7. The method for preparing the high-visual wear-resistant anti-skid environment-friendly road marking paint according to claim 1, wherein the white pigment filler in the step 2 comprises one or at least two of titanium white, heavy calcium carbonate, barium sulfate and calcined kaolin.
8. 8. The method for preparing the high-visual wear-resistant anti-skid environment-friendly road marking paint according to claim 1, wherein the functional filler in the step 2 comprises one or at least two of surface modified nano silicon dioxide, nano aluminum oxide, sheet silicate and superfine barium sulfate.
9. 9. The method for preparing the high-visual wear-resistant anti-skid environment-friendly road marking paint according to claim 1, wherein the light-reflecting medium in the step 2 comprises first light-reflecting microbeads and second light-reflecting microbeads, wherein the average particle size of the first light-reflecting microbeads is 100-400 microns, and the average particle size of the second light-reflecting microbeads is 400-1200 microns.

Description

High-visual wear-resistant anti-skid environment-friendly road marking paint and preparation method thereof Technical Field The invention relates to the technical field of paint preparation, in particular to a high-visual wear-resistant anti-skid environment-friendly road marking paint and a preparation method thereof. Background Road markings are an important component of road traffic safety facilities, and are mainly used for providing continuous and definite traffic guidance for vehicles and pedestrians through daytime visibility, night retroreflection visibility and rain and night recognition performance. Along with the continuous improvement of the requirements of scenes such as expressways, urban expressways, tunnels, airport roads and the like on traffic guidance precision and safety, the road marking material has higher initial brightness and retroreflection performance, and also has good wear resistance, skid resistance and visibility retention rate under the service conditions such as repeated rolling, rain wash, ultraviolet aging, dirt coverage and the like of vehicles. The existing road marking materials mainly comprise solvent type, water-based, hot-melt type, bi-component cold molding type and the like, wherein the water-based and solvent-free systems have become an important development direction of the road marking materials due to lower emission of volatile organic compounds and lower environmental load. However, existing road marking materials still have significant performance limitations between high visibility, wear resistance, and slip resistance. In order to improve the night retroreflection performance, a certain number of reflective glass beads are usually required to be exposed on the surface of a marking line, but the surface is too flat or the bead exposure mode is single, the wet skid resistance is reduced, more coarse structures or hard aggregates are introduced for improving the skid resistance, and the surface pollution, the brightness reduction and the retroreflection attenuation are easy to cause. Meanwhile, the anti-skid aggregate is easy to fall off under the rolling and shearing actions of the vehicle, and the wear resistance and long-term stability of the marking are affected. For an environment-friendly system, although an aqueous or solvent-free system meets the environmental protection requirement, the problems of great influence on drying and curing, insufficient early water resistance, mechanical strength, improved interface bonding and the like still exist. The prior art generally focuses more on initial performance, but focuses less on the light reflection retention, the anti-slip retention and the function sustained exposure after abrasion in the long-term service process. Therefore, development of the road marking paint and the preparation method thereof, which can realize high visibility, wear resistance and skid resistance under the environment-friendly condition and maintain better comprehensive performance in the use process, still has important significance. Disclosure of Invention Aiming at the problems, the invention provides the high-visual wear-resistant anti-skid environment-friendly road marking paint and the preparation method thereof, wherein the reflective medium is partially embedded on the surface of the anti-skid aggregate core coated by the coupling agent to form reflective-anti-skid composite particles, and the reflective-anti-skid composite particles are cooperatively compounded with the dual-particle-size reflective medium, so that the marking has high retroreflection performance, excellent anti-skid performance and wear resistance. Meanwhile, the water-based hybrid resin system is compounded with the functional filler, so that the adhesive force and durability of the coating are obviously improved while the low VOC emission is ensured. The invention can be realized by the following technical scheme: A preparation method of high-visual wear-resistant anti-skid environment-friendly road marking paint comprises the following steps: step 1, cleaning and drying an anti-skid aggregate core, coating a coupling agent on the surface of the anti-skid aggregate core to form an interface bonding layer, and applying a reflective medium on the surface of the anti-skid aggregate core before the interface bonding layer is completely cured to enable the reflective medium to be partially embedded in the interface bonding layer; And 2, adding the environment-friendly film-forming resin, part of auxiliary agent and water into a stirrer, uniformly mixing, adding the white pigment filler, the functional filler and the auxiliary agent, uniformly dispersing, adding the reflective medium and the reflective-anti-slip composite particles, and uniformly mixing to obtain the high-visual wear-resistant anti-slip environment-friendly road marking paint. Preferably, the coating comprises, by weight, 18-35 parts of an environment-friendly film-forming resin, 15-40 parts o