High-dirt-resistance road mark coating and preparation method thereof

Abstract

The invention relates to high-dirt-resistance road mark coating and a preparation method thereof, aiming to enable coating to have good long-acting dirt resistance. The coating comprises a component A and a component B, wherein the formula of the component A comprises the following materials in parts by weight: 30-50 parts of active MMA (Methl Methacrylate) type acrylate resin, 10-20 parts of titanium white powder, 1-5 parts of plasticizer, 0.1-0.3 part of antistatic agent, 0.1-1 part of anti-fouling agent and the balance of filler, and the total parts are 100 parts; the formula of the component B comprises the following materials in parts by weight: 30-50 parts of active MMA type acrylate resin, 10-20 parts of titanium white powder, 1-5 parts of plasticizer, 0.1-0.3 part of antistatic agent, 0.1-1 part of anti-fouling agent, 0.5-5 parts of curing agent and the balance of filler, and the total parts are 100 parts; and when in use, the component A and the component B are mixed by a weight ratio of 1-4:1. During preparing, the component A and the component B are respectively prepared. When in use, the component A and the component B are mixed in proportion, and marked lines are formed on the road surfaces in spraying or scraping construction modes.

Description

1. Technical field [0001] The high anti-fouling road marking paint and the preparation method thereof belong to the field of transportation, and specifically relate to a paint specially improving the anti-pollution ability of road markings and a preparation method thereof. 2. Background 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 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 pe...

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

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