High-compactness anti-fouling marking paint

Abstract

The invention discloses a high-compactness anti-fouling marking paint. The high-compactness anti-fouling marking paint comprises primer and finish paint, and is characterized in that the primer and the finish paint are dual-component paints; the primer is colored paint, and the finish paint is varnish; during use, the primer and a curing agent are sprayed to the pavement after being mixed in the volume ratio of 98:2, and then a layer of finish paint is immediately coated and sprayed on the wet primer surface; the finish paint and the primer are in chemical crosslinking reaction to form anti-fouling marking. The paint film is small in porosity and high in compactness; the paint film is covered on the surface of the coating, the adhesion and corrosion to the coating by the dust, the oil contamination and fine particulate matters and like pollutants is prevented and reduced, and the coating anti-fouling performance is greatly improved; the finish paint and the primer are bounded through the chemical crosslinking reaction, two coatings are firmly adhered to form the marking coating heat resistance stability; the coating cannot become tacky and soft after encountering the heat, therebyeffectively preventing the pollutant from adhering or embedding into the coating to form the pollution. The high-compactness anti-fouling marking paint disclosed by the invention is suitable for the urban road marking and the lane edge marking of the highway.

Description

technical field [0001] The invention relates to a coating, in particular to an anti-pollution road marking coating, which belongs to the technical field of coatings. Background technique [0002] The function of traffic markings is to provide instructions, warnings and prohibited information for motor vehicle drivers and pedestrians, so as to achieve the purpose of controlling and guiding traffic and improving traffic safety. For this reason, traffic markings should have distinct visibility. Due to the pollution of automobile tires, soil and sand on the road, dust in the air, oil dripping on the road, asphalt on the road and particles in the exhaust of automobiles, etc., hot-melt marking paint, two-component paint is currently used in my country The clarity and visibility of road markings drawn by marking paint, solvent-based and water-based marking paint will decrease after a period of use. In some areas with serious pollution and little rain, sometimes the color of the mar...

AI Technical Summary

Problems solved by technology

The marking paints currently used in my country are generally composed of resins, pigments, fillers, additives and glass beads. There are a large number of microscopic pores in the road marking coatings applied by them. After sand and dust fall on the surface of the paint film, Due to the adsorption and the rolling effect of automobile tires, the above-mentioned pollutants adhere to the pores of the coating, and a very small part of them will invade into the interior of the coating with the rainwater. With the evaporation of the rainwater, this part of the pollutants will be permanently retained. In the paint film, the poor compactness of the paint film is the main reason for the pollution of road markings

Another important reason for the pollution of the marking line is that the hardness of the marking line coating is low, and the paint film will become soft and sticky after being heated, which will cause pollutants to adhere to the surface and cause pollution

The most commonly used hot-melt marking paint in China is a thermoplastic paint. It uses petroleum resin or modified rosin resin as the binder of the paint. Due to the low glass transition temperature of the resin, the marking shape of the coating after heating From the rigid glass state to the high elastic state, the coating begins to soften, and the viscosity of the marking surface increases. The sand and dust on the road surface are easy to adhere to the marking surface. These pollutants are embedded in the coating after being rolled by the wheels. However, due to the use of thicker particle size fillers in hot-melt marking paint, the surface of the marking line drawn by it is rough and the pores of the coating are large, which makes the hot-melt marking line more likely to be polluted