Influence of different road types on adhesion of marking paint

The adhesion between hot-melt road marking paint and road is the basis of ensuring the excellent performance of markings. The factors that determine the bonding effect between marking paint and road surface are not only the performance of paint itself and construction technology, but also the type of road surface.

1. Cement road surface

Cement road is a kind of hydrophilic substance, which has oil repellency and has little adhesion with petroleum resin contained in hot melt paint. At the same time, the deformation of cement road surface is small, while the paint is thermoplastic and rigid in cold weather. It is necessary to use primer in order to make the cement road and paint better bonded together.

2. Asphalt road surface

The new asphalt road surface is rich in asphalt organic matter, and the construction temperature of hot melt marking is 180-220 °c, which is higher than the melting point of asphalt. During the construction, high-temperature paint will melt the asphalt surface, so that the two can be firmly combined. Paint and road surface can achieve better combination effects without primer.

However, for the old asphalt road, there are a lot of dust, dirt and wear on it. In order to improve adhesion, it is necessary to use a special primer.

According to the road types and primer performance, asphalt road generally uses about 100-150 g per square meter, and cement concrete road uses about 200 g per square meter.

If you want to make the marking have a longer shelf life, besides the primer, you can also consider using two-component cold paint and glass beads with better wear resistance and longevity.

We can offer you high retro-reflective glass beads for road making paint, MMA resin for 2-component paint, and color glass beads for swimming pool finish.

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