Preparation method of anti-pollution road marking paint

Abstract

The invention discloses a preparation method of an anti-pollution road marking paint. The paint comprises the following components by weight percent: 14-18% of quartz sand, 16-20% of calcium carbonate powder, 16-20% of mica powder, 6-8% of glass beads, 1.4-1.8% of polyethylene wax, 3-4% of ethylene-vinyl acetate (EVA) hot melt adhesive, 4-5% of titanium dioxide, 2-3% of a W3 plasticizer, 2-3% of an HG-613 fluorocarbon surfactant, 1-2% of a GW150 antistatic agent, and the balance of C5 petroleum resin. The preparation method comprises the following steps: 1) mixing the quartz sand, the calcium carbonate powder, the mica powder, the glass beads and the titanium dioxide in a blender mixer for 2-4 hours, so as to evenly disperse the mixture; 2) adding the polyethylene wax, the EVA hot melt adhesive and the petroleum resin to the blender mixer, and then mixing for 3-5 hours; 3) finally adding an antifoulant, the fluorocarbon surfactant and the antistatic agent, and then mixing for 2-4 hours; and 4) inspecting the mixing degree, and packaging after passing.

Description

technical field [0001] The invention relates to the technical field of traffic facilities, in particular to a preparation method of road marking paint. Background technique [0002] Different from other paints, road marking paints not only have to withstand the rolling of wheels after construction, but also the formed markings have to withstand the friction of mud and sand from the road surface, oil stains, mud blocks and other dirt during use. Pollution, rain erosion and other destructive effects make the use environment of marking lines much worse than that of other types of ordinary paints. [0003] Existing hot-melt, solvent-based or water-based road marking paints have poor anti-fouling performance after construction, which is particularly obvious on urban roads, especially in northern urban roads. No matter in the north or the south, after a period of time after the construction of road marking paint, especially after a winter with less rain, these marking materials a...

AI Technical Summary

Problems solved by technology

[0002] Different from other paints, road marking paints not only have to withstand the rolling of wheels after construction, but also the formed markings have to withstand the friction of mud and sand from the road surface, oil stains, mud blocks and other dirt during use. Pollution, rain erosion and other destructive effects, which make the use environment of marking lines much worse than that of other types of ordinary coatings

[0003] The existing hot-melt, solvent-based or water-based road marking paints have poor anti-fouling performance after construction, which is particularly obvious on urban roads, especially in northern urban roads

No matter in the north or the south, after a period of time after the construction of road marking paint, especially after a winter with less rain, these marking materials are easy to stick to dust, mud, oil and other dirt, making the markings Lines become unclear, the overall appearance effect is poor, affecting road traffic safety

[0004] In traditional road marking paints, hot-melt road marking paints usually use low molecular weight dioctyl phthalate (DOP) or dibutyl phthalate (DBP) as the main component of plasticizers. , during the use of marking lines, low-molecular-weight plasticizers are easy to migrate from the marking paint to the marking surface, increasing the probability of flying dust, mud and other dirt sticking to the road surface; on the other hand, hot-melt road The film-forming material of marking paint is usually made of petroleum resin or rosin resin, because thermoplastic rosin resin or petroleum resin is easy to soften under high temperature conditions (in summer, the surface temperature of asphalt pavement can be as high as 80 ℃ or more). Increase the adhesion of marking lines to dirt; at the same time, hot-melt road marking paints use extremely rough fillers, such as 20-100 mesh quartz sand, glass beads, etc. After the paint is formed into a film, it is rolled under the wheels The surface of the marking line is extremely rough, which will also reduce the anti-pollution ability of the marking line; the water-based road marking paint, solvent-based road marking paint and hot-melt road marking paint in traditional road marking paint are all made of Thermoplastic resin, and the rough surface after film formation is not conducive to the improvement of the anti-fouling performance of the marking line

The patent (ZL200710061727.0) provides a two-component road marking paint using epoxy resin as a film-forming material. It is a marking paint specially used for cement roads, which is developed to prevent the markings on cement roads from falling off easily. , although the sensitivity of the coating film itself to temperature changes is greatly reduced after the film is formed, due to the long drying time, it usually takes more than 2 hours at room temperature. It is easy to pollute and get dirty during the process, and it is also very easy to cause traffic jams

[0005] The invention patent application with application number 201010154496.X discloses a road marking paint with high anti-fouling property and its preparation method. Although it has certain anti-fouling performance, because it is a two-component paint, there are many components and the cost is high. High, high requirements on the application process, the specification of the patent application has clearly stated that "the paint of the present invention is strictly prohibited from contacting the two components A and B before spraying or scraping on the ground, otherwise it will react in advance and cause the paint to be scrapped."

"And because the patent application pays too much attention to the anti-fouling performance, resulting in its low binding force with the road, which reduces the life of the product

[0006] In summary, the anti-pollution performance of the existing road marking paints is not ideal, and it is urgent to develop a road marking paint with high anti-pollution ability